An automatic straight seam welding apparatus

Abstract

The application relates to the technical field of welding equipment, and aims at the problem that straight seam welding processing of traditional ring-shaped plates is difficult, and provides automatic straight seam welding equipment, which comprises a rack, a supporting mechanism, a clamping mechanism, a limiting mechanism and an automatic welding mechanism are arranged in the rack; the supporting mechanism comprises a horizontally arranged supporting shaft, and supporting pads are embedded in the top of the supporting shaft; the clamping mechanism is located below the supporting mechanism, and is used for driving two joint sides of the ring-shaped plate to approach each other; the limiting mechanism is located above the supporting mechanism, and is used for pressing and limiting the two joint sides of the ring-shaped plate on the supporting pads; the automatic welding mechanism is located above the limiting mechanism, and is used for welding the two joint sides of the ring-shaped plate on the supporting pads. The application has the effect of facilitating the welding processing of the straight seam of the ring-shaped plate.

Description

Technical Field

[0001] This application relates to the field of welding equipment, and more particularly to an automatic straight seam welding device. Background Technology

[0002] Currently, when producing cylindrical and other ring-shaped metal components, the sheet metal must first be bent into a ring shape using a bending machine, and then the straight seams on the two splicing sides of the ring-shaped sheet metal are welded and fixed.

[0003] When welding the straight seam at the joint of the two ring-shaped plates, the ring-shaped plates need to be clamped and positioned manually to align the two joint sides of the ring-shaped plates. Then, the straight seam of the ring-shaped plates is spot-welded to fix it, and finally, the straight seam is fully welded.

[0004] Regarding the aforementioned technologies, on the one hand, the process of manually clamping and welding the annular plates is inconvenient and has low overall efficiency. On the other hand, manual welding requires skilled welders and the welding quality is difficult to control. Therefore, there is room for improvement. Summary of the Invention

[0005] To facilitate welding at the straight seam of annular plates, this application provides an automatic straight seam welding device.

[0006] This application provides an automatic straight seam welding device, which adopts the following technical solution:

[0007] An automatic straight seam welding device includes a frame, wherein a support mechanism, a clamping mechanism, a limiting mechanism and an automatic welding mechanism are provided inside the frame;

[0008] The support mechanism includes a horizontally arranged support shaft, and a support pad is embedded at the top of the support shaft. The support pad is used for the overlapping of the two splicing sides of the annular plate.

[0009] The clamping mechanism is located below the support mechanism, and the clamping mechanism is used to drive the two splicing sides of the annular plate closer to each other.

[0010] The limiting mechanism is located above the supporting mechanism, and the limiting mechanism is used to press and limit the two splicing sides of the annular plate onto the supporting pad.

[0011] The automatic welding mechanism is located above the limiting mechanism and is used to weld the two spliced ​​sides of the annular plate located on the support pad.

[0012] By adopting the above technical solution, the sheet metal is fitted onto the support shaft, and the two splicing sides of the sheet metal are overlapped on the support pad of the support shaft. The sheet metal is clamped by a clamping mechanism to bring the two splicing sides of the sheet metal closer together until they abut against each other. Then, a limiting mechanism presses and limits the two splicing sides of the sheet metal onto the support pad. Finally, an automatic welding mechanism welds and fixes the straight seam formed by the two splicing sides of the sheet metal. Compared with the traditional manual welding method, there is no need for manual clamping and limiting of the annular sheet metal, and automatic welding of the straight seam of the annular sheet metal can be realized, which effectively improves the welding efficiency of the straight seam of the annular sheet metal and makes the welding operation of the straight seam of the annular sheet metal simpler and more convenient.

[0013] Preferably, the clamping mechanism includes a base, with connecting seats horizontally rotatably connected to both sides of the base. The base is provided with a swing drive assembly for driving the two connecting seats to swing towards or away from each other. Several clamps are provided between the two connecting seats. Each connecting seat has a support plate on its top, which is located near the side of the support shaft. A winding shaft is also rotatably supported on the connecting seat. The winding shaft is located below the support plate, and its axial direction is parallel to the rotation axis of the rotating end of the connecting seat. A rotary drive is provided on the connecting seat for driving the corresponding winding shaft to rotate. The two ends of the clamps are respectively wound around the support plates on the top of the two connecting seats and respectively connected to the winding shafts of the two connecting seats.

[0014] By adopting the above technical solution, after the annular plate is fitted onto the support shaft, the swing drive assembly drives the two connecting seats to swing the corresponding support plates toward the winding shaft. At the same time, the rotary drive on the connecting seat drives the winding shaft to rotate, thereby winding up the hoop. The tightened hoop drives the two splicing sides of the annular plate to move closer to each other. On the one hand, this facilitates the clamping and limiting of the annular plate; on the other hand, it can be adapted to annular plates of different diameters, which helps to improve the overall applicability of the clamping mechanism.

[0015] Preferably, the limiting mechanism includes two limiting parts arranged opposite to each other, the two limiting parts being located on opposite sides of the support shaft; each limiting part includes a limiting seat, the bottom of which is provided with a pressure plate and a lifting drive for driving the pressure plate to move vertically up and down.

[0016] By adopting the above technical solution, after the two splicing sides of the annular plate are driven to abut against each other by the clamping mechanism, the corresponding pressure plates are driven to move down by the lifting drive components at the bottom of the two limiting seats, so as to press the two splicing sides of the annular plate onto the support pads respectively. This helps to limit the displacement or height inconsistency of the two splicing sides of the annular plate during the subsequent welding process, which would affect the welding quality at the straight seam.

[0017] Preferably, the upper surface of the support pad has a welding clearance groove along its length.

[0018] By adopting the above technical solution and setting the welding clearance groove, the straight seam formed after the two splicing sides of the annular plate are joined to the support pad is located above the welding clearance groove. This helps to reduce the situation where the annular plate is welded to the support pad when the automatic welding mechanism welds the straight seam of the annular plate, thus preventing the annular plate from sticking to the support pad.

[0019] Preferably, the limiting mechanism is provided with a positioning component, which is located on a limiting seat and is positioned close to the support shaft. The positioning component includes a positioning part and a swing drive. The positioning part includes a positioning seat and a positioning blade. The two ends of the positioning seat are a hinged end and a free end, respectively. The hinged end of the positioning seat is hinged to the corresponding limiting seat, and the positioning blade is connected to the free end of the positioning seat. The swing drive is driven to the positioning seat and is used to drive the positioning seat to swing towards or away from the support shaft support pad. The bottom of the welding clearance groove of the support pad is provided with a snap-fit ​​groove for the positioning blade to be inserted.

[0020] By adopting the above technical solution, the annular plate to be welded is fitted onto the support shaft. A swing drive mechanism drives the positioning seat to swing towards the support shaft until the positioning blade is embedded in the snap-fit ​​groove at the bottom of the welding clearance groove. Simultaneously, the annular plate is fitted onto the winding shaft, with its two splicing sides positioned on opposite sides of the positioning blade to quickly position them onto the support pad. Then, a clamping mechanism drives the two splicing sides of the annular plate closer together until they are respectively connected to opposite sides of the positioning blade. At the same time, the lifting drive mechanisms at the two limiting parts drive the corresponding... The pressure plates press the two splicing sides of the annular plate onto the support pad. Then, the pressure plate of one of the limiting parts is released from the splicing side of the annular plate, so that the swing drive can drive the positioning seat to move the positioning blade away from the support pad. Finally, the clamping assembly continues to clamp the annular plate so that the two splicing sides of the annular plate abut against each other. At the same time, the lifting drive on the limiting part drives the pressure plate to press the previously released splicing side of the annular plate back onto the support pad. This fixes the two splicing sides of the annular plate onto the support pad while positioning the straight seam of the annular plate on the welding clearance groove of the support pad, thus achieving the final positioning of the annular plate.

[0021] Preferably, the two ends of the support shaft are a fixed end and a feeding end, respectively. The fixed end of the support shaft is connected to the bottom of the limiting seat through a connecting plate. The limiting mechanism is also provided with a support component. The support component is close to the feeding end of the support shaft. The support component includes a support part and a movable driving member. The support part is used to support the feeding end of the support shaft. The movable driving member is drivenly connected to the support part. The movable driving member is used to drive the support part to move in a direction closer to or away from the feeding end of the support shaft.

[0022] By adopting the above technical solution, before inserting the annular plate onto the support shaft or removing the annular plate from the support shaft, the supporting part is driven away from the feed end of the support shaft by the movable driving component, so as to limit the interference of the supporting part with the insertion of the annular plate onto the support shaft. After the annular plate is inserted onto the support shaft, the supporting part is driven to move closer to the feed end of the support shaft by the movable driving component until the supporting part supports the feed end of the support shaft, so as to improve the overall rigidity and structural stability of the support shaft and reduce the deformation of the support shaft under stress during subsequent welding.

[0023] Preferably, the support pad has an air supply hole inside along its length, and the bottom of the welding clearance groove has several air outlet holes, all of which are connected to the air supply hole.

[0024] By adopting the above technical solution, during the welding of the straight seam of the annular plate by the automatic welding mechanism, welding shielding gas can be continuously injected into the gas supply hole. The welding shielding gas entering the gas supply hole is discharged through the gas outlet holes at various locations in the welding clearance groove and acts on the straight seam formed by the two splicing sides of the annular plate to limit the oxidation of the plate at the weld, which is beneficial to improving the welding quality of the straight seam of the annular plate.

[0025] Preferably, a cooling circulation pipe is installed inside the support pad.

[0026] By adopting the above technical solution, the automatic welding mechanism can continuously supply cooling water or cooling oil and other cold sources into the cooling circulation pipe during the process of welding the straight seam of the annular plate overlapping the support pad. This can help to cool the support pad in a timely manner and reduce the deformation and damage of the support pad caused by the high temperature generated during welding.

[0027] Preferably, the top of the support shaft is also slidably connected to two reference flat steels, which are located on opposite sides of the support pad and are set higher than the support pad. The support shaft is provided with two locking members corresponding to the two reference flat steels, and the locking members are used to restrict the sliding of the corresponding reference flat steels.

[0028] By adopting the above technical solution, after the annular plate to be welded is fitted onto the support shaft, the annular plate slides along the support shaft until the end of the annular plate abuts against the ends of two reference flat steel bars on the support shaft. The two reference flat steel bars then provide axial positioning of the annular plate. By allowing the reference flat steel bars to slide on the support shaft, and by providing locking devices on the support shaft to restrict the sliding of the reference flat steel bars, the overall position of the reference flat steel bars is adjustable. This facilitates the sliding adjustment of the reference flat steel bars according to different length specifications, thereby improving the overall applicability of the reference flat steel bars.

[0029] Preferably, the clamping mechanism further includes a counterweight, which includes several counterweight bars located at the bottom of the suspended section of the clamp and connected to the bottom of the suspended section of the clamp.

[0030] By adopting the above technical solution, on the one hand, several counterweights are used to drive the hoop to bend downwards, thereby limiting the interference between the upwardly bending hoop and the annular plate fitted into the support shaft. On the other hand, the counterweights can improve the connection integrity between adjacent hoops.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Insert the ring-shaped plate to be welded into the support shaft, and overlap the two splicing sides of the ring-shaped plate onto the support plate respectively. Drive the two splicing sides of the ring-shaped plate closer to each other through the clamping mechanism until the two splicing sides abut against each other. Then, press the two splicing sides of the ring-shaped plate onto the support pad through the limiting mechanism to align the two splicing sides of the ring-shaped plate. Finally, automatically weld the straight seam formed by the two splicing sides of the ring-shaped plate through the automatic welding mechanism, which helps to reduce the welding operation difficulty at the straight seam of the ring-shaped plate.

[0033] 2. By setting up the positioning component, before the annular plate is put onto the winding shaft, the swing drive of the positioning component drives the positioning seat to swing the positioning blade plate and inserts the positioning blade plate into the snap-fit ​​groove on the support pad. When the annular plate is put onto the support shaft, the two splicing sides of the annular plate are respectively located on both sides of the positioning blade plate, which can quickly position the two splicing sides of the annular plate above the support pad, so that the two splicing sides of the annular plate can be pressed and positioned onto the support pad by the limiting mechanism.

[0034] 3. By setting up a clamping mechanism, after the annular plate is fitted onto the support shaft, the swing drive component drives the two connecting seats to swing the corresponding support plates toward the support shaft. At the same time, the rotary drive component on the two connecting seats drives the corresponding winding shaft to rotate, thereby tightening the clamp between the two connecting seats. The tightening clamp drives the two splicing sides of the annular plate to move closer to each other to form a straight seam. At the same time, the self-adaptive shape of the clamp allows the clamping mechanism to be adapted to annular plates and quasi-annular plates of different diameters, which helps to improve the applicability of the clamping mechanism. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the frame of an automatic straight seam welding equipment used in this application.

[0036] Figure 2 This is a structural schematic diagram of the internal components of the frame, as shown in the embodiments of this application.

[0037] Figure 3 This is a schematic diagram used in this application to illustrate the positions of the support mechanism, clamping mechanism, limiting mechanism, and automatic welding mechanism.

[0038] Figure 4 This is a schematic diagram illustrating the positions of the support mechanism, the limiting mechanism, and the automatic welding mechanism in an embodiment of this application.

[0039] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0040] Figure 6 This is a schematic diagram illustrating the structure of the support shaft in an embodiment of this application.

[0041] Figure 7 This is a partial schematic diagram illustrating the fixed end of the support shaft in an embodiment of this application.

[0042] Figure 8 yes Figure 4 Enlarged schematic diagram of section B.

[0043] Figure 9 yes Figure 4 Enlarged schematic diagram of section C.

[0044] Figure 10 This is a schematic diagram illustrating the positional relationship between the clamping mechanism and the support shaft in an embodiment of this application.

[0045] Figure 11 This is a schematic diagram illustrating the structure of the clamping mechanism in an embodiment of this application.

[0046] Figure 12 This is a schematic diagram illustrating the connection relationship between the temporary support assembly and the feed end of the support shaft, as shown in the embodiments of this application.

[0047] Figure 13 This is a schematic diagram illustrating the structure of the limiting mechanism and the automatic welding mechanism in the embodiments of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Frame; 10. Feed inlet; 11. Pneumatic sliding door; 2. Support mechanism; 21. Support shaft; 211. Fixed end; 212. Feed end; 22. Support pad; 221. Welded clearance groove; 222. Air supply hole; 223. Air outlet; 224. Cooling circulation pipe; 225. Snap-fit ​​groove; 23. Reference flat steel; 231. Locking component; 24. Connecting plate; 25. Snap-fit ​​shaft; 3. Clamping mechanism; 30. Base; 301. Swing drive assembly; 3010. Drive motor; 3011. Drive shaft; 3012. Drive block; 31. Connecting seat; 311. Connecting... 32. Clamping block; 33. Support plate; 34. Hoop; 35. Winding shaft; 351. Rotary drive component; 36. Counterweight bar; 4. Limiting mechanism; 41. Limiting seat; 42. Pressure plate; 421. Guide rod; 422. Limiting nut; 423. Limiting spring; 43. Lifting drive component; 44. Positioning assembly; 441. Positioning seat; 443. Positioning blade; 442. Swing drive component; 45. Support assembly; 451. Support seat; 4511. Snap-fit ​​notch; 452. Movable drive component; 5. Automatic welding mechanism; 51. Three-axis linear module; 52. Welding torch. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0051] This application discloses an automatic straight seam welding device, referring to... Figures 1 to 5 The system includes a frame 1, within which a support mechanism 2, a clamping mechanism 3, a limiting mechanism 4, and an automatic welding mechanism 5 are mounted. The support mechanism 2 includes a horizontally arranged support shaft 21 for mounting annular plates. A support pad 22 is embedded at the top of the support shaft 21 for overlapping the two splicing sides of the annular plates. The clamping mechanism 3 is located at the bottom of the support mechanism 2 and is used to drive the two splicing sides of the annular plates on the support shaft 21 to move closer to each other. The limiting mechanism 4 is located above the support mechanism 2 and is used to press the two splicing sides of the annular plates on the support shaft 21 onto the support pad 22. The automatic welding mechanism 5 is located above the limiting mechanism 4 and is used to weld the straight seams of the annular plates.

[0052] When welding the straight seam of the annular plate, the annular plate to be welded is inserted into the support shaft 21, and the two splicing sides of the annular plate overlap on the support pad 22 of the support shaft 21. The clamping mechanism 3 drives the two splicing sides of the annular plate to abut against each other to form a straight seam, and the limiting mechanism 4 presses the two splicing sides of the annular plate tightly onto the support pad 22. Finally, the automatic welding mechanism 5 automatically welds the straight seam of the annular plate.

[0053] Reference Figures 5 to 7In this embodiment, the support pad 22 is a copper pad. The upper surface of the support pad 22 has a welding clearance groove 221 along its own length direction, so that the straight seam formed by the two splicing sides of the annular plate is located above the welding clearance groove 221. This helps to prevent the annular plate from sticking to the support plate 33 when the automatic welding mechanism 5 welds the straight seam of the annular plate.

[0054] The support pad 22 has an internally formed air supply hole 222. Both ends of the air supply hole 222 extend to both ends of the support pad 22, with one end open to form an open end, which is connected to the shielding gas source. The bottom of the welding clearance groove 221 has several air outlet holes 223 along its length, all of which are connected to the air supply holes 222. Subsequently, when the automatic welding mechanism 5 welds the straight seam of the annular plate, shielding gas can be continuously supplied into the air supply holes 222 from the shielding gas source. After entering the air supply holes 222, the shielding gas is discharged through the air outlet holes 223 and acts on the straight seam of the annular plate, which helps to limit oxidation in the straight seam area of ​​the annular plate during welding, thus improving the welding quality of the straight seam of the annular plate.

[0055] The support pad 22 has a U-shaped groove around its outer periphery. The U-shaped groove surrounds the support pad 22 and is embedded with a cooling circulation pipe 224. Both ends of the cooling circulation pipe 224 are connected to the cooling water circulation system. When the straight seam of the ring plate is welded by the automatic welding structure, cooling water can be continuously supplied to the cooling circulation pipe 224 through the cooling water circulation pipe to cool the support pad 22 in a timely manner, so as to limit the welding heat from causing the support pad 22 to deform or be damaged.

[0056] Reference Figures 8 to 9 The clamping mechanism 3 includes a base 30, and connecting seats 31 are provided on opposite sides of the base 30. The bottom of the connecting seats 31 is rotatably connected to the base 30 through a connecting block 311. The axial direction of the rotating shaft of the connecting seats 31 is parallel to the axial direction of the support shaft 21. The base 30 is provided with a swing drive assembly 301 for driving the two connecting seats 31 to swing towards each other or away from each other.

[0057] Specifically, the swing drive assembly 301 includes two drive shafts 3011 and a drive motor 3010. Both drive shafts 3011 are rotatably connected to the base 30, and are located on opposite sides of the bottom connecting blocks 311 of the two connecting seats 31. The axial direction of the drive shafts 3011 is parallel to the axial direction of the rotation axis of the connecting seats 31. Each drive shaft 3011 has a corresponding drive block 3012 connected to the connecting block 311. The end of the drive block 3012 away from the drive shaft 3011 abuts against the corresponding connecting block 311 via a roller. The output end of the drive motor 3010 is connected to the two drive shafts 3011 via a gearbox structure, driving the two drive shafts 3011 to rotate. During rotation, the drive shafts 3011 drive the connecting seats 31 to swing via the drive blocks 3012. It is understood that in other embodiments, the swing drive assembly 301 may also use two independent drive cylinders to drive the two connecting seats 31 to swing.

[0058] A plurality of clamping blocks 32 are evenly protruding on the connecting seat 31, with one end of the clamping block 32 extending away from the connecting seat 31 to the side of the support shaft 21; a support plate 33 is also supported above the connecting seat 31; the ends of the clamping blocks 32 away from the connecting seat 31 are all connected to the support plate 33, thus stably supporting the support plate 33 on the connecting seat 31. A plurality of bands 34 are provided between the two connecting seats 31. In this embodiment, the bands 34 are made of polyester webbing. The bands 34 are located below the support shaft 21 and are evenly distributed along the axial direction of the support shaft 21. A winding shaft 35 is supported above the connecting seat 31 corresponding to the bands 34, and the winding shaft 35 rotatably passes through the clamping blocks 32; a rotary drive for driving the winding shaft 35 to rotate is also provided on the connecting seat 31. In this embodiment, the rotary drive is a geared motor. The two ends of the hoop 34 are respectively wrapped around the top support plate 33 of the two connecting seats 31, and respectively connected to the outer periphery of the winding shaft 35 on the two connecting seats 31.

[0059] With the clamping mechanism 3 in place, after the ring-shaped plate to be welded is put onto the support shaft 21, the swing drive assembly 301 drives the two connecting seats 31 to swing towards each other. At the same time, the rotary drive 351 on the two connecting seats 31 drives the winding shaft 35 to swing, so as to tighten the clamp 34. The tightened clamp 34 drives the two splicing sides of the ring-shaped plate that is now on the support shaft 21 to move closer to each other.

[0060] The clamping mechanism 3 also includes a counterweight, which is located below the suspended section of several clamps 34. The counterweight includes several counterweight bars 36, which are connected to several clamps 34. By setting the counterweight, on the one hand, it is beneficial to improve the connection integrity of adjacent clamps 34; on the other hand, the counterweight can keep the clamps 34 bent downwards, so as to limit the interference between the annular plate and the raised clamps 34 when the annular plate is subsequently fitted onto the support shaft 21.

[0061] Reference Figure 4 , Figure 5 and Figure 10 The limiting mechanism 4 includes two limiting parts, which are arranged opposite to each other. The two limiting parts are located above the support shaft 21 and are distributed on opposite sides of the support shaft 21. Each limiting part includes a limiting seat 41, both ends of which are connected to the inner side of the frame 1. Each limiting seat 41 has a pressure plate 42 at its bottom. The pressure plates 42 at the bottom of both limiting seats 41 are located above the support pad 22 of the support shaft 21, and there is a gap between the pressure plates 42 on the adjacent side of the two limiting seats 41. Several guide rods 421 are vertically supported on the upper surface of the pressure plate 42. The guide rods 421 pass through the limiting seat 41, and the top of the guide rods 421 is threaded with a limiting nut 422. A limiting spring 423 is also sleeved on the guide rod 421, and the two ends of the limiting spring 423 abut against the limiting nut 422 and the upper surface of the limiting seat 41, respectively. The limiting seat 41 is provided with a lifting drive component 43 corresponding to the pressure plate 42. The lifting drive component 43 is used to drive the pressure plate 42 to move vertically. Specifically, the lifting drive component 43 includes an airbag. The airbag is located between the pressure plate 42 and the limiting seat 41, and the top and bottom sides of the airbag are respectively connected to the limiting seat 41 and the pressure plate 42. The airbag is connected to an air source.

[0062] Subsequently, when the two splicing sides of the annular plate are fixed to the support pad 22 by the limiting mechanism 4, the air source inflates the airbags at the bottom of the two limiting seats 41. By expanding the airbags and driving the corresponding pressure plate 42 to move down, the splicing sides of the annular plate can be pressed tightly onto the support pad 22.

[0063] Reference Figure 1 and Figure 6 The frame 1 has a feed inlet 10 at one end, and a pneumatic sliding door 11 is also installed at the end of the frame 1 with the feed inlet 10 to open and close the feed inlet 10. The two ends of the support shaft 21 are a fixed end 211 and a feed end 212, respectively. The fixed end 211 of the support shaft 21 is fixed to the bottom of the two limit seats 41 of the limit mechanism 4 through the connecting plate 24. The feed end 212 of the support shaft 21 is set close to the feed inlet 10 of the frame 1, so that the ring-shaped plate to be welded can be inserted into the support shaft 21 through the feed end 212 of the support shaft 21.

[0064] Reference Figure 6 and Figure 7The top of the support shaft 21 is also provided with two reference flat steels 23; the two reference flat steels 23 are located on opposite sides of the support pad 22 and are slightly higher than the upper surface of the support pad 22. The support shaft 21 has two mounting grooves corresponding to the two reference flat steels 23, and the reference flat steels 23 are respectively embedded in the corresponding mounting grooves. The mounting grooves are open at one end near the fixed end 211 of the support shaft 21. The support shaft 21 is provided with locking members 231 for limiting the sliding of the reference flat steels 23. Specifically, the locking member 231 includes a locking bolt threaded through the outer periphery of the support shaft 21, and one end of the locking bolt extends into the mounting groove and abuts against the reference flat steel 23.

[0065] By setting two reference flat steel bars 23, after the annular plate is fitted onto the support shaft 21, the annular plate is moved radially along the support shaft 21 until the end of the annular plate abuts against the two reference flat steel bars 23, thereby axially limiting the annular plate. By embedding the reference flat steel bars 23 in the mounting groove and setting a locking member 231 to limit the sliding of the reference flat steel bars 23, the position of the reference flat steel bars 23 can be slidably adjusted, which helps to improve the applicability of the two reference flat steel bars 23.

[0066] Reference Figure 5 , Figure 10 and Figure 11 The limiting mechanism 4 is also provided with a positioning component 44, which is located on a limiting seat 41 and is positioned close to the support shaft 21. The positioning component 44 includes a positioning part and a swing drive component 442; the positioning part includes a positioning seat 441 and a positioning blade 443; the two ends of the positioning seat 441 are a hinged end and a free end, respectively, and the hinged end of the positioning seat 441 is horizontally hinged to the corresponding limiting seat 41. The positioning blade 443 is connected to the free end of the positioning seat 441 and is located on the side of the positioning seat 441 close to the support shaft 21, and the positioning blade 443 and the positioning seat 441 are arranged in an inverted L-shape. The bottom of the welding clearance groove 221 of the support pad 22 has a snap-fit ​​groove 225 corresponding to the positioning blade 443, and the snap-fit ​​groove 225 is used for the insertion of the positioning blade 443. The swing drive 442 is driven to the positioning seat 441, and is used to drive the positioning seat 441 to move the positioning blade 443 toward or away from the support pad 22 of the support shaft 21. In this embodiment, the swing drive 442 is a cylinder. When the positioning seat 441 swings to the point where the positioning blade 443 is inserted into the locking groove 225 on the support pad 22, the positioning blade 443 is vertically positioned.

[0067] With the positioning component 44 in place, before the annular plate is fitted onto the support shaft 21, the swing drive 442 drives the positioning seat 441 to swing the positioning blade 443 toward the support pad 22 of the support shaft 21 until the positioning blade 443 is embedded into the snap-fit ​​groove 225 at the bottom of the welded clearance groove 221 of the support pad 22. When the annular plate is subsequently fitted onto the support shaft 21, the two splicing sides of the annular plate are positioned on opposite sides of the positioning blade 443, quickly positioning the two splicing sides of the annular plate onto the support pad 22. Then, the clamping mechanism 3 drives the two splicing sides of the annular plate to abut against the opposite sides of the positioning blade 443, while the lifting drive 43 at the two limiting parts drives the corresponding pressure plates 42 downwards to press the two splicing sides of the annular plate onto the support pad 22. Then, the clamping mechanism 3 temporarily releases the clamping limit on the annular plate. When the pressure plate 42 is released from the splicing side of the annular plate, the swing drive 442 drives the positioning seat 441 to move the positioning blade 443 away from the support pad 22. After the positioning blade 443 moves off the support pad 22, the clamping mechanism 3 continues to clamp the annular plate until the two splicing sides of the annular plate abut against each other. At the same time, the lifting drive 43 of the previously released limiting seat 41 drives the pressure plate 42 to move down, so as to press the corresponding splicing side of the annular plate onto the support pad 22, thereby achieving the final positioning of the annular plate.

[0068] Reference Figure 12 The limiting mechanism 4 is provided with a support assembly 45 for supporting the feed end 212 of the support shaft 21. The support assembly 45 includes a support part and a movable drive part 452. The support part is used to temporarily support the feed end 212 of the support shaft 21. The support part is located between two limiting seats 41 and is set close to the feed end 212 of the support shaft 21. The support part has a locking shaft 25 protruding on both sides of the support part corresponding to the feed end 212 of the support shaft 21. The support part includes a support base 451, with a rotating end and a free end at both ends. The rotating ends of the support base 451 are rotatably connected to the opposite side of the two limiting seats 41. The axial direction of the rotation axis of the rotating end of the support base 451 is parallel to the axial direction of the locking shaft 25. The two locking shafts 25 on the side of the free end of the support base 451 close to the feed end 212 of the support shaft 21 have two locking notches 4511 for the corresponding locking shafts 25 to be inserted. The movable drive component 452 is driven to the rotating end of the support base 451, and is used to drive the support base 451 to swing around its own rotation axis toward the feed end 212 of the support shaft 21. In this embodiment, the movable drive component 452 is a cylinder.

[0069] Before the annular plate to be welded is fitted onto the support shaft 21, the movable drive component 452 drives the support base 451 to swing away from the fixed end 211 of the support shaft 21, so that the annular plate can be fitted onto the support shaft 21 through the feed end 212 of the support shaft 21. After the annular plate is fitted onto the support shaft 21, the movable drive component 452 drives the support base 451 to swing towards the feed end 212 of the support shaft 21, until the two locking notches 4511 at the free end of the support base 451 respectively engage with the two locking pins 25 at the fixed end 211 of the support shaft 21. This provides auxiliary support to the fixed end 211 of the support shaft 21 through the support part, thereby improving the overall rigidity of the support shaft 21 and reducing the deformation of the support shaft 21 under stress during subsequent welding.

[0070] Reference Figure 13 The automatic welding mechanism 5 includes a three-axis linear module 51 and a welding torch 52. The three-axis linear module 51 is mounted above two limiting seats 41, and the length direction of the X-axis linear module in the three-axis linear module 51 is parallel to the axial direction of the support shaft 21. The welding torch 52 is connected to the slide of the Z-axis module in the three-axis linear module 51, and the welding torch 52 is located between the two limiting seats 41. When welding the straight seam of the annular plate, the three-axis linear module 51 drives the welding torch 52 to move along the straight seam of the annular plate located on the support shaft 21, and the welding torch 52 welds the straight seam of the annular plate.

[0071] The implementation principle of this application embodiment is as follows: when welding a straight seam of annular plates using an automatic straight seam welding equipment, the following steps are included:

[0072] S1: Positioning component 44 is in place: The positioning seat 441 is driven by the swing drive 442 to swing the positioning blade 443 until the positioning blade 443 is inserted into the snap-fit ​​groove 225 on the support pad 22 of the support shaft 21.

[0073] S2: Feed port opening: The feed port 10 is opened through the pneumatic sliding door 11 at the feed port 10 of the frame 1;

[0074] S3: Workpiece positioning: Insert the ring-shaped plate to be welded into the support shaft 21 through the feeding end 212 of the support shaft 21, and position the two splicing sides of the ring-shaped plate on opposite sides of the positioning blade plate 443.

[0075] S4: Initial positioning of the workpiece: The clamping mechanism 3 drives the two splicing sides of the annular plate to move closer to each other until the two splicing sides of the annular plate abut against the opposite sides of the positioning blade plate 443 respectively; at the same time, the lifting drive 43 of the two limiting parts drives the corresponding limiting plates to move down, so as to fix the splicing sides of the annular plate onto the support pad 22 respectively.

[0076] S5: Positioning component 44 resets: The clamping mechanism 3 temporarily releases the clamping limit of the annular plate; at the same time, the clamping limit of the pressure plate 42 on one splicing side of the annular plate is released by a limiting part; the positioning bracket is driven by the swing drive 442 to move the positioning blade 443 away from the support pad 22 of the support shaft 21.

[0077] S6: Final positioning of the workpiece: The clamping mechanism 3 continues to drive the two splicing sides of the annular plate closer to each other until the two splicing sides of the annular plate abut against each other; at the same time, the lifting drive 43 at the limit part that was released from the previous pressing state drives the pressure plate 42 to move down, so as to press and limit the splicing side of the annular plate to the support pad 22.

[0078] S7: Support component 45 in place: The active drive component 452 drives the support base 451 to swing toward the fixed end 211 of the support shaft 21 until the two snap-fit ​​notches 4511 on the support base 451 respectively engage with the two snap-fit ​​shafts 25 at the feed end 212 of the support shaft 21.

[0079] S8: Inlet 10 Closed: Inlet 10 of frame 1 is closed by pneumatic sliding door 11;

[0080] S9: Straight seam welding: Welding the straight seams of annular plates using an automated welding structure.

[0081] The automatic straight seam welding equipment of this application can realize automatic clamping and limiting of annular plates, as well as automatic welding of straight seams of annular plates, effectively reducing the difficulty of straight seam welding of annular plates and improving welding efficiency.

[0082] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic straight seam welding device, characterized in that: It includes a frame (1), and the frame (1) is equipped with a support mechanism (2), a clamping mechanism (3), a limiting mechanism (4) and an automatic welding mechanism (5); The support mechanism (2) includes a horizontally arranged support shaft (21), and a support pad (22) is embedded at the top of the support shaft (21). The support pad (22) is used for the overlapping of the two splicing sides of the annular plate. The clamping mechanism (3) is located below the support mechanism (2), and the clamping mechanism (3) is used to drive the two splicing sides of the annular plate closer to each other; The limiting mechanism (4) is located above the supporting mechanism (2), and the limiting mechanism (4) is used to press and limit the two splicing sides of the annular plate onto the supporting pad (22); The automatic welding mechanism (5) is located above the limiting mechanism (4), and the automatic welding mechanism (5) is used to weld the two splicing sides of the annular plate located on the support pad (22) of the support shaft (21); The clamping mechanism (3) includes a base (30), on which connecting seats (31) are horizontally rotatably connected on opposite sides. The base (30) is provided with a swing drive assembly (301) for driving the two connecting seats (31) to swing toward each other or away from each other. Several clamps (34) are provided between the two connecting seats (31). Each connecting seat (31) is supported by a support plate (33) on its top, which is located near the side of the support shaft (21). A winding shaft (35) is rotatably supported on the upper part. The winding shaft (35) is located below the support plate (33). The axial direction of the winding shaft (35) is parallel to the rotation axis of the rotating end of the connecting seat (31). The connecting seat (31) is provided with a rotary drive (351) for driving the corresponding winding shaft (35) to rotate. The two ends of the hoop (34) are respectively wound around the support plate (33) at the top of the two connecting seats (31) and respectively connected to the winding shaft (35) of the two connecting seats (31). The limiting mechanism (4) includes two limiting parts arranged opposite to each other, which are located on opposite sides of the support shaft (21); the limiting part includes a limiting seat (41), and a pressure plate (42) and a lifting drive (43) for driving the pressure plate (42) to rise and fall vertically are provided at the bottom of the limiting seat (41).

2. The automatic straight seam welding equipment according to claim 1, characterized in that: The upper surface of the support pad (22) is provided with a welding clearance groove (221) along its own length direction.

3. The automatic straight seam welding equipment according to claim 2, characterized in that: The limiting mechanism (4) is provided with a positioning component (44), which is located on a limiting seat (41) and is positioned close to the support shaft (21). The positioning component (44) includes a positioning part and a swing drive (442). The positioning part includes a positioning seat (441) and a positioning blade (443). The two ends of the positioning seat (441) are a hinged end and a free end, respectively. The hinged end of the positioning seat (441) is hinged to the corresponding limiting seat (41). The positioning blade (443) is connected to the free end of the positioning seat (441); the swing drive (442) is driven to connect with the positioning seat (441), and the swing drive (442) is used to drive the positioning seat (441) to swing towards or away from the support pad (22) of the support shaft (21); the bottom of the welding clearance groove (221) of the support pad (22) is provided with a snap-fit ​​groove (225), and the snap-fit ​​groove (225) is used for the positioning blade (443) to be embedded.

4. The automatic straight seam welding equipment according to claim 1, characterized in that: The two ends of the support shaft (21) are a fixed end (211) and a feeding end (212), respectively. The fixed end (211) of the support shaft (21) is connected to the bottom of the limiting seat (41) through a connecting plate (24). The limiting mechanism (4) is also provided with a support component (45). The support component (45) is close to the feeding end (212) of the support shaft (21). The support component (45) includes a support part and a movable drive member (452). The support part is used to support the feeding end (212) of the support shaft (21). The movable drive member (452) is drivenly connected to the support part. The movable drive member (452) is used to drive the support part to move towards or away from the feeding end (212) of the support shaft (21).

5. An automatic straight seam welding device according to claim 2, characterized in that: The support pad (22) has an air supply hole (222) inside along its own length direction, and the bottom of the welding clearance groove (221) has a plurality of air outlet holes (223), and the plurality of air outlet holes (223) are connected to the air supply hole (222).

6. An automatic straight seam welding device according to claim 2, characterized in that: A cooling circulation pipe (224) is installed inside the support pad (22).

7. An automatic straight seam welding device according to claim 1, characterized in that: The top of the support shaft (21) is also slidably connected to two reference flat steels (23). The two reference flat steels (23) are located on opposite sides of the support pad (22), and the reference flat steels (23) are set higher than the support pad (22). The support shaft (21) is provided with two locking parts (231) corresponding to the two reference flat steels (23). The locking parts (231) are used to restrict the sliding of the corresponding reference flat steels (23).

8. An automatic straight seam welding device according to claim 1, characterized in that: The clamping mechanism (3) further includes a counterweight, which includes several counterweight bars (36). The counterweight bars (36) are located at the bottom of the suspended section of the clamp (34) and are connected to the bottom of the suspended section of the clamp (34).

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