Automatic straight seam welding equipment

Abstract

The invention relates to the technical field of welding equipment, and provides automatic straight seam welding equipment aiming at the problem that straight seam welding machining of traditional annular plates is difficult, the automatic straight seam welding equipment comprises a rack, and a supporting mechanism, a hooping mechanism, a limiting mechanism and an automatic welding mechanism are arranged in the rack in a supported mode; the supporting mechanism comprises a horizontally-arranged supporting shaft, and a supporting cushion block is embedded in the top of the supporting shaft. The hooping mechanism is located below the supporting mechanism and used for driving the two splicing sides of the annular plate to be close to each other. The limiting mechanism is located above the supporting mechanism and used for pressing and limiting the two splicing sides of the annular plate to the supporting cushion blocks. The automatic welding mechanism is located above the limiting mechanism and used for welding the two splicing sides of the annular plate located on the supporting shaft supporting cushion block. The welding device has the effect of facilitating welding machining of the straight seam of the annular plate.

Description

Technical Field

[0001] The present application relates to the field of welding equipment, and in particular to an automatic straight seam welding equipment. Background Art

[0002] At present, when producing annular metal components such as cylinders, the plate must first be bent into a ring shape by a plate bending machine, and then the straight seams on the two joint sides of the annular plate must be welded and fixed.

[0003] When the straight seam welding process is performed at the two joints of the annular plate, the annular plate needs to be manually clamped and limited so that the two joint sides of the annular plate are aligned, and then the straight seam of the annular plate is spot welded and fixed, and finally the straight seam is fully welded.

[0004] Regarding the above-mentioned related technologies, on the one hand, the operation process of manually clamping, limiting and welding the annular plate is relatively inconvenient and the overall efficiency is low. On the other hand, manual welding is more challenging for the welder's skills and the welding quality is difficult to control. Therefore, there is room for improvement. Summary of the invention

[0005] In order to facilitate the welding process at the straight seam of the annular plate, the present application provides an automatic straight seam welding device.

[0006] The present application provides an automatic straight seam welding device, which adopts the following technical solution: An automatic straight seam welding device comprises a frame, wherein a supporting mechanism, a clamping mechanism, a limiting mechanism and an automatic welding mechanism are supported in the frame; The support mechanism comprises a horizontally arranged support shaft, a support pad is embedded on the top of the support shaft, and the support pad is used for overlapping the two splicing sides of the annular plate; The clamping mechanism is located below the supporting mechanism, and is used to drive the two splicing sides of the annular plate to approach each other; The limiting mechanism is located above the supporting mechanism, and is used to press and limit the two spliced ​​sides of the annular plate to the supporting pad; The automatic welding mechanism is located above the limiting mechanism, and is used to weld two joint sides of the annular plate located on the supporting shaft pad.

[0007] By adopting the above technical scheme, the plate is inserted into the supporting shaft, and the two spliced ​​sides of the plate are overlapped on the supporting pad of the supporting shaft. The plate is clamped by the clamping mechanism so that the two spliced ​​sides of the plate are close to each other until they abut against each other, and then the two spliced ​​sides of the plate are pressed and limited on the supporting pad by the limiting mechanism. Finally, the straight seam formed by the two spliced ​​sides of the plate is welded and fixed by the automatic welding mechanism. Compared with the traditional manual welding method, there is no need to clamp and limit the annular plate manually, and automatic welding of the straight seam of the annular plate can be realized, which effectively improves the welding efficiency of the straight seam of the annular plate, and makes the welding operation of the straight seam of the annular plate simpler and more convenient.

[0008] Preferably, the tightening mechanism includes a base, and connecting seats are horizontally rotatably connected to the base on two opposite sides, and the base is provided with a swinging drive component for driving the two connecting seats to swing towards or away from each other; a plurality of hoop belts are arranged between the two connecting seats, and support plates are supported on the top of the connecting seats, and the support plates are arranged close to the side edges of the support shafts; a winding shaft is also rotatably supported on the connecting seat, and the winding shaft is located below the support plate, and the axial direction of the winding shaft is arranged parallel to the rotation axis of the rotating end of the connecting seat; a rotary drive member for driving the corresponding winding shaft to rotate is provided on the connecting seat; the two ends of the hoop belt are respectively wound around the support plates on the tops of the two connecting seats, and are respectively connected to the winding shafts of the two connecting seats.

[0009] By adopting the above technical scheme, after the annular plate is put onto the supporting shaft, the two connecting seats are driven by the swing driving assembly to drive the corresponding supporting plates to swing in the direction close to the winding shaft. At the same time, the winding shaft is driven to rotate by the rotary driving member on the connecting seat to reel in the hoop belt, and the two spliced ​​sides of the annular plate are driven to approach each other by the tightened hoop belt. On the one hand, it is convenient to realize the clamping and limiting of the annular plate; on the other hand, it can adapt to annular plates of different diameters, which is beneficial to improve the overall application range of the clamping mechanism.

[0010] Preferably, the limiting mechanism includes two limiting parts arranged opposite to each other, and the two limiting parts are respectively located on two opposite sides of the support shaft; the limiting part includes a limiting seat, and a pressure plate and a lifting drive member for driving the pressure plate to rise and fall vertically are arranged at the bottom of the limiting seat.

[0011] By adopting the above technical solution, after the two spliced ​​sides of the annular plate are driven to abut against each other by the clamping mechanism, the corresponding pressing plates are driven downward by the lifting and lowering driving parts at the bottom of the two limit seats to respectively press the two spliced ​​sides of the annular plate against the supporting pads, which is beneficial to limit the displacement or height inconsistency of the two spliced ​​parts of the annular plate during subsequent welding, thereby affecting the welding quality at the straight seam.

[0012] Preferably, a welding avoidance groove is provided on the upper surface of the support pad along its length direction.

[0013] By adopting the above technical scheme and setting the welding avoidance groove, the two spliced ​​sides of the annular plate are subsequently overlapped on the supporting pad, and the straight seam formed after the two spliced ​​sides of the annular plate abut against each other is located above the welding avoidance groove, which is beneficial to reduce the situation where the annular plate is welded to the supporting pad when the automatic welding mechanism welds the straight seam of the annular plate, causing the annular plate to adhere to the supporting pad.

[0014] Preferably, a positioning assembly is provided on the limiting mechanism, the positioning assembly is located on a limiting seat, and the positioning assembly is arranged close to the support shaft, the positioning assembly includes a positioning part and a swinging driving member, the positioning part includes a positioning seat and a positioning knife plate; the two ends of the positioning seat are respectively a hinged end and a free end, the hinged end of the positioning seat is hinged to the corresponding limiting seat, and the positioning knife plate is connected to the free end of the positioning seat; the swinging driving member is drivingly connected to the positioning seat, and the swinging driving member is used to drive the positioning seat to swing towards or away from the support shaft support pad; the bottom of the welding avoidance groove of the support pad is provided with a clamping groove, and the clamping groove is used for the positioning knife plate to be embedded.

[0015] By adopting the above technical solution, the annular plate to be welded is inserted into the front of the supporting shaft, and the positioning seat is driven by the swing driving member to drive the positioning knife plate to swing in the direction close to the supporting shaft until the positioning knife plate is embedded in the clamping groove at the bottom of the welding avoidance groove; when the annular plate is inserted into the winding shaft, the two splicing sides of the annular plate are respectively located on the opposite sides of the positioning knife plate, so that the two splicing sides of the annular plate are quickly positioned on the supporting pad, and then the two splicing sides of the annular plate are driven to approach each other through the clamping mechanism until the two splicing sides of the annular plate are respectively connected to the opposite sides of the positioning knife plate, and at the same time, the lifting driving members of the two limiting parts drive the corresponding The pressure plate presses the two splicing sides of the annular plate against the supporting pad respectively, and then releases the pressure of the pressure plate of a limiting part on the splicing side of the annular plate, so that the swing driving part drives the positioning seat to drive the positioning knife plate away from the supporting pad, and finally continues to tighten the annular plate through the clamping assembly to make the two splicing sides of the annular plate abut against each other. At the same time, the lifting driving part on the limiting part drives the pressure plate to re-press the splicing side of the annular plate that was released from the limit before onto the supporting pad, so that the two splicing sides of the annular plate are fixed on the supporting pad, and at the same time, the straight seam of the annular plate is located on the welding avoidance groove of the supporting pad, thereby realizing the final positioning of the annular plate.

[0016] Preferably, the two ends of the support shaft are respectively a fixed end and a feeding end, and the fixed end of the support shaft is connected to the bottom of the limit seat through a connecting plate; a support assembly is also provided on the limit mechanism, and the support assembly is close to the feeding end of the support shaft, and the support assembly includes a support part and a movable driving member, and the support part is used to support the feeding end of the support shaft, and the movable driving member is drivingly connected to the support part, and the movable driving member is used to drive the support part to move toward or away from the feeding end of the support shaft.

[0017] 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 support part is driven away from the feed end of the support shaft by the movable driving component to limit the interference of the support part in inserting the annular plate into the support shaft. After the annular plate is inserted onto the support shaft, the support part is driven by the movable driving component to move toward the feed end of the support shaft until the support 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 stress deformation of the support shaft during subsequent welding.

[0018] Preferably, an air supply hole is opened inside the supporting pad along its length direction, and a plurality of air outlet holes are opened at the bottom of the welding air avoidance groove, and the plurality of air outlet holes are connected to the air supply hole.

[0019] By adopting the above technical scheme, during the process of straight seam welding of annular plates by the automatic welding mechanism, welding shielding gas can be continuously injected into the air supply hole. The welding shielding gas entering the air supply hole is discharged through the air outlet holes at the welding avoidance groove, and acts on the straight seam formed on the two spliced ​​sides of the annular plate to limit oxidation of the plate at the welding location, which is beneficial to improving the welding quality at the straight seam of the annular plate.

[0020] Preferably, a cooling circulation pipe is installed in the supporting cushion block.

[0021] By adopting the above technical solution, the automatic welding mechanism can continuously introduce cooling water or cooling oil and other cold sources into the cooling circulation pipeline during the process of welding the straight seams of the annular plate overlapped on the shaft support pad, so as to cool the support pad in time, which is beneficial to reduce the deformation and damage of the support pad caused by the high temperature generated by welding.

[0022] Preferably, the top of the support shaft is also slidably connected to two reference flat steels, which are respectively located on opposite sides of the support pad, and the reference flat steels are arranged higher than the support pad. The support shaft is provided with two locking parts corresponding to the two reference flat steels, and the locking parts are used to limit the sliding of the corresponding reference flat steels.

[0023] By adopting the above technical solution, after the annular plate to be welded is inserted into the supporting shaft, the annular plate is slid along the supporting shaft until the end of the annular plate abuts against the ends of the two reference flat steels on the supporting shaft, and the two reference flat steels are used to realize the axial limit of the annular plate. By making the reference flat steel slide on the supporting shaft and providing a locking piece on the supporting shaft for limiting the sliding of the reference flat steel, the overall position of the reference flat steel is adjustable, which is convenient for sliding and adjusting the position of the reference flat steel according to different length specifications, which is conducive to improving the overall application range of the reference flat steel.

[0024] Preferably, the clamping mechanism further comprises a counterweight portion, the counterweight portion comprises a plurality of counterweight bars, the counterweight bars are located at the bottom of the suspended section of the clamp and are connected to the bottom of the suspended sections of the plurality of clamps.

[0025] By adopting the above technical solution, on the one hand, a plurality of counterweight bars are used to drive the hoop to bend downward to limit the interference between the upward bent hoop and the annular plate sleeved on the support shaft. On the other hand, the counterweight bars can be used to improve the connection integrity between adjacent hoop bands.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Put the annular plate to be welded into the supporting shaft, and overlap the two splicing sides of the annular plate on the supporting plate respectively, and drive the two splicing sides of the annular plate to approach each other through the clamping mechanism until the two splicing sides abut against each other, and press the two splicing sides of the annular plate on the supporting pad through the limiting mechanism to align the two splicing sides of the annular plate. Finally, the straight seam formed by the two splicing sides of the annular plate is automatically welded by the automatic welding mechanism, which is conducive to reducing the difficulty of welding operation at the straight seam of the annular plate.

[0027] 2. Through the setting of the positioning component, before the annular plate is put on the winding shaft, the positioning seat is driven by the swing driving member of the positioning component to drive the positioning knife plate to swing, and the positioning knife plate is inserted into the clamping groove on the supporting pad; when the annular plate is put on the supporting shaft, the two splicing sides of the annular plate are respectively located on both sides of the positioning knife plate, so that the two splicing sides of the annular plate can be quickly positioned above the supporting pad, which is convenient for the subsequent pressing and positioning of the two splicing sides of the annular plate on the supporting pad through the limiting mechanism.

[0028] 3. Through the setting of the tightening mechanism, after the annular plate is put onto the supporting shaft, the two connecting seats are driven by the swing driving assembly to drive the corresponding supporting plates to swing toward the direction close to the supporting shaft, and at the same time, the corresponding winding shaft is driven to rotate by the rotary driving parts on the two connecting seats to tighten the hoop between the two connecting seats, and the tightening hoop is used to drive the two spliced ​​sides of the annular plate to approach each other to form a straight seam. At the same time, the adaptive shape of the hoop can make the tightening mechanism adapt to annular plates and annular-like plates of different diameters, which is beneficial to improve the application range of the tightening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the automatic straight seam welding equipment frame used in this application.

[0030] Figure 2 It is a structural schematic diagram used to illustrate various components inside the rack in an embodiment of the present application.

[0031] Figure 3 This is a schematic diagram used in this application to illustrate the positions of the supporting mechanism, the clamping mechanism, the limiting mechanism and the automatic welding mechanism.

[0032] Figure 4 It is a schematic diagram of the positions of a supporting mechanism, a limiting mechanism and an automatic welding mechanism used in an embodiment of the present application.

[0033] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0034] Figure 6 It is a schematic diagram of the structure of the support shaft used to illustrate the embodiment of the present application.

[0035] Figure 7 It is a partial schematic diagram used to illustrate the fixed end of the support shaft in an embodiment of the present application.

[0036] Figure 8 yes Figure 4 Enlarged schematic diagram of part B in the middle.

[0037] Fig. 9 yes Figure 4 Enlarged schematic diagram of part C in the middle.

[0038] Fig.10 It is a schematic diagram used to illustrate the positional relationship between the clamping mechanism and the support shaft in an embodiment of the present application.

[0039] Fig.11 It is a structural schematic diagram used to illustrate the clamping mechanism in an embodiment of the present application.

[0040] Fig.12 It is a schematic diagram used to illustrate the connection relationship between the temporary support assembly and the feeding end of the support shaft in an embodiment of the present application.

[0041] Fig.13 It is a structural schematic diagram used to illustrate the limiting mechanism and the automatic welding mechanism in the embodiment of the present application.

[0042] Description of reference numerals: 1. Frame; 10. Feeding port; 11. Pneumatic sliding door; 2. Support mechanism; 21. Support shaft; 211. Fixed end; 212. Feeding end; 22. Support pad; 221. Welding avoidance groove; 222. Air supply hole; 223. Air outlet hole; 224. Cooling circulation pipe; 225. Clamping groove; 23. Reference flat steel; 231. Locking piece; 24. Connecting plate; 25. Clamping shaft; 3. Clamping mechanism; 30. Base; 301. Swing drive assembly; 3010. Drive motor; 3011. Drive shaft; 3012. Drive block; 31. Connecting seat; 311. Connecting Connecting block; 32, clamping block; 33, support plate; 34, hoop; 35, winding shaft; 351, rotary drive member; 36, counterweight bar; 4, limiting mechanism; 41, limiting seat; 42, pressure plate; 421, guide rod; 422, limiting nut; 423, limiting spring; 43, lifting drive member; 44, positioning assembly; 441, positioning seat; 443, positioning knife plate; 442, swing drive member; 45, supporting assembly; 451, supporting seat; 4511, clamping notch; 452, movable drive member; 5, automatic welding mechanism; 51, three-axis linear module; 52, welding gun. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-13 This application is described in further detail.

[0044] The present application embodiment discloses an automatic straight seam welding device, referring to Figures 1 to 5 , including a frame 1, in which a supporting mechanism 2, a clamping mechanism 3, a limiting mechanism 4 and an automatic welding mechanism 5 are supported. The supporting mechanism 2 includes a horizontally arranged supporting shaft 21, the supporting shaft 21 is used for the annular plate to be sleeved, and a supporting pad 22 is embedded on the top of the supporting shaft 21. The supporting pad 22 is used for overlapping the two splicing sides of the annular plate; the clamping mechanism 3 is located at the bottom of the supporting mechanism 2, and is used to drive the two splicing sides of the annular plate on the supporting shaft 21 to approach each other; the limiting mechanism 4 is located above the supporting mechanism 2, and is used to press the two splicing sides of the annular plate on the supporting shaft 21 onto the supporting pad 22; the automatic welding mechanism 5 is located above the limiting mechanism 4, and is used to weld the straight seam of the annular plate.

[0045] When welding the straight seams of annular plates, the annular plates to be welded are inserted into the supporting shaft 21, and the two spliced ​​sides of the annular plates are overlapped on the supporting pads 22 of the supporting shaft 21. The two spliced ​​sides of the annular plates are driven to abut against each other to form a straight seam through the clamping mechanism 3, and the two spliced ​​sides of the annular plates are pressed against the supporting pads 22 through the limiting mechanism 4. Finally, the straight seams of the annular plates are automatically welded through the automatic welding mechanism 5.

[0046] Reference Figures 5 to 7In this embodiment, the support pad 22 is a copper pad. A welding avoidance groove 221 is provided on the upper surface of the support pad 22 along its length direction. The straight seam formed by the two spliced ​​sides of the annular plate is located above the welding avoidance groove 221, which is conducive to preventing the annular plate and the support plate 33 from sticking when the automatic welding mechanism 5 welds the straight seam of the annular plate.

[0047] An air supply hole 222 is formed inside the support pad 22; both ends of the air supply hole 222 extend to both ends of the support pad 22 respectively, one end of the air supply hole 222 is open to form an open end, and the open end of the air supply hole 222 is connected to the shielding gas source. A plurality of air outlet holes 223 are provided at the bottom of the welding air avoidance groove 221 along its own length direction, and the air outlet holes 223 are all connected to the air supply hole 222. When the straight seam of the annular plate is subsequently welded by the automatic welding mechanism 5, the shielding gas source can continuously pass the shielding gas into the air supply hole 222. After entering the air supply hole 222, the shielding gas is discharged through the air outlet holes 223 at various locations and acts on the straight seam of the annular plate, which is beneficial to limit the oxidation of the straight seam area of ​​the annular plate during the welding process, so as to better improve the welding quality of the straight seam of the annular plate.

[0048] A U-shaped pipe groove is opened on the outer periphery of the support pad 22, and the U-shaped pipe groove is arranged around the support pad 22. A cooling circulation pipe 224 is embedded in the U-shaped pipe groove. Both ends of the cooling circulation pipe 224 are connected to the cooling water circulation system. When the straight seam of the annular plate is welded by the automatic welding structure, cooling water can be continuously passed into the cooling circulation pipe 224 through the cooling water circulation pipeline to cool the support pad 22 in time, so as to limit the deformation and damage of the support pad 22 caused by the welding heat.

[0049] Reference Figures 8 to 9 The clamping mechanism 3 includes a base 30, and connecting seats 31 are arranged on opposite sides of the base 30. The bottom of the connecting seat 31 is rotatably connected to the base 30 through a connecting block 311. The axial direction of the rotating axis of the connecting seat 31 is arranged parallel to the axial direction of the supporting shaft 21. The base 30 is provided with a swing driving component 301 for driving the two connecting seats 31 to swing towards or away from each other.

[0050] Specifically, the swing drive assembly 301 includes two drive shafts 3011 and a drive motor 3010. The two drive shafts 3011 are both rotatably connected to the base 30, and the two drive shafts 3011 are respectively located on the opposite sides of the connection blocks 311 at the bottom of the two connection seats 31. The drive shafts 3011 are axially arranged parallel to the axial direction of the rotation axis of the connection seat 31. The drive shafts 3011 are connected to drive blocks 3012 corresponding to the connection blocks 311. The end of the drive block 3012 away from the drive shaft 3011 is abutted against the corresponding connection block 311 through a roller. The output end of the drive motor 3010 is transmission-connected to the two drive shafts 3011 through a gear box structure, which is used to drive the two drive shafts 3011 to rotate. During the rotation of the drive shafts 3011, the connection seat 31 is driven to swing through the drive blocks 3012. It can be understood that in other embodiments, the swing drive assembly 301 can also use two independent drive cylinders to drive the two connection seats 31 to swing.

[0051] A plurality of clamping blocks 32 are evenly protruded on the connection seat 31, and one end of the clamping blocks 32 away from the connection seat 31 extends to the side of the support shaft 21; a support plate 33 is also supported above the connection seat 31; one end of the clamping blocks 32 away from the connection seat 31 is connected to the support plate 33, so that the support plate 33 is firmly supported on the connection seat 31. A plurality of hoops 34 are arranged between the two connection seats 31, and in this embodiment, the hoops 34 are made of polyester webbing. A plurality of hoops 34 are located below the support shaft 21, and a plurality of hoops 34 are evenly distributed along the axial direction of the support shaft 21. A winding shaft 35 is supported above the connection seat 31 corresponding to the hoops 34, and the winding shaft 35 is rotatably passed through a plurality of clamping blocks 32; a rotary drive member for driving the winding shaft 35 to rotate is also arranged on the connection seat 31, and in this embodiment, the rotary drive member is a reduction motor. Two ends of the band 34 are respectively wound around the top support plates 33 of the two connection seats 31 , and are respectively connected to the outer circumference of the winding shaft 35 on the two connection seats 31 .

[0052] Through the setting of the tightening mechanism 3, after the annular plate to be welded is subsequently inserted into the supporting shaft 21, the two connecting seats 31 are driven to swing towards each other through the swing driving component 301, and at the same time, the winding shaft 35 is driven to swing through the rotary driving parts 351 on the two connecting seats 31 to tighten the hoop 34, and the tightened hoop 34 is used to drive the two splicing sides of the annular plate sleeved on the supporting shaft 21 to approach each other.

[0053] The clamping mechanism 3 also includes a counterweight portion, which is located below the suspended sections of the plurality of hoops 34. The counterweight portion includes a plurality of counterweight strips 36, which are connected to the plurality of hoops 34. The arrangement of the counterweight portion is, on the one hand, conducive to improving the connection integrity of adjacent hoops 34; on the other hand, the counterweight portion can be used to keep the hoop 34 in a bent downward state, so as to limit the interference between the annular plate and the raised hoop 34 when the annular plate is subsequently inserted onto the support shaft 21.

[0054] Reference Figure 4 , Figure 5 and Fig.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 respectively distributed on the opposite sides of the support shaft 21. The limiting part includes a limiting seat 41, and both ends of the limiting seat 41 are connected to the inner side of the frame 1; a pressure plate 42 is provided at the bottom of the limiting seat 41, and the bottom pressure plates 42 of the two limiting seats 41 are both located above the support pad 22 of the support shaft 21, and a gap is left on the side close to the pressure plates 42 of the two limiting seats 41. A plurality of guide rods 421 are vertically supported on the upper surface of the pressure plate 42, and the guide rods 421 are penetrated through the limiting seat 41. The top end of the guide rods 421 is threadedly connected to the limiting nut 422, and a limiting spring 423 is also sleeved on the guide rod 421, and the two ends of the limiting spring 423 are respectively abutted against the limiting nut 422 and the upper surface of the limiting seat 41. The limit seat 41 is provided with a lifting drive member 43 corresponding to the pressure plate 42. The lifting drive member 43 is used to drive the pressure plate 42 to rise and fall vertically. Specifically, the lifting drive member 43 includes an airbag, which is located between the pressure plate 42 and the limit seat 41. The top and bottom sides of the airbag are respectively connected to the limit seat 41 and the pressure plate 42, and the airbag is connected to the air source.

[0055] When the two spliced ​​sides of the annular plate are subsequently fixed on the support pad 22 by the limiting mechanism 4, the air source inflates the airbags at the bottom of the two limiting seats 41, and the airbags expand and drive the corresponding pressing plates 42 to move downward, so that the spliced ​​sides of the annular plate can be pressed tightly against the support pad 22.

[0056] Reference Figure 1 and Figure 6 A feed port 10 is provided at one end of the frame 1, and a pneumatic sliding door 11 is installed at the end of the frame 1 with the feed port 10 to open and close the feed port 10. The two ends of the support shaft 21 are respectively a fixed end 211 and a feed end 212, and the fixed end 211 of the support shaft 21 is fixed to the bottom of two limiting seats 41 of the limiting mechanism 4 through a connecting plate 24; the feed end 212 of the support shaft 21 is arranged close to the feed port 10 of the frame 1, so that the annular plate to be welded can be inserted into the support shaft 21 through the feed end 212 of the support shaft 21.

[0057] Reference Figure 6 and Figure 7Two reference flat steel bars 23 are also arranged on the top of the supporting shaft 21; the two reference flat steel bars 23 are respectively located on opposite sides of the supporting cushion block 22 and the reference flat steel bars 23 are arranged slightly higher than the upper surface of the supporting cushion block 22. The supporting shaft 21 is provided with two installation grooves corresponding to the two reference flat steel bars 23, and the reference flat steel bars 23 are respectively embedded in the corresponding installation grooves, and the installation grooves are opened at one end close to the fixed end 211 of the supporting shaft 21. The supporting shaft 21 is provided with a locking member 231 for limiting the sliding of the reference flat steel bars 23 corresponding to the reference flat steel bars 23. Specifically, the locking member 231 includes a locking bolt threadedly arranged on the outer peripheral side of the supporting shaft 21, and one end of the locking bolt extends into the installation groove and is tightly pressed against the reference flat steel bars 23.

[0058] By setting the two reference flat steel bars 23, after the annular plate is subsequently inserted into the supporting shaft 21, the annular plate is radially moved along the supporting shaft 21 until the end of the annular plate abuts against the two reference flat steel bars 23, and the two reference flat steel bars 23 are used to realize the axial limit of the annular plate. By embedding the reference flat steel 23 in the installation groove and providing a locking member 231 for limiting the sliding of the reference flat steel 23, the position of the reference flat steel 23 can be slidably adjusted, which is conducive to improving the application range of the two reference flat steel bars 23.

[0059] Reference Figure 5 , Fig.10 and Fig.11 The limiting mechanism 4 is also provided with a positioning assembly 44, which is located on a limiting seat 41 and is arranged close to the supporting shaft 21. The positioning assembly 44 includes a positioning part and a swing driving member 442; the positioning part includes a positioning seat 441 and a positioning blade plate 443; the two ends of the positioning seat 441 are respectively a hinged end and a free end, and the hinged end of the positioning seat 441 is horizontally hinged on the corresponding limiting seat 41. The positioning blade plate 443 is connected to the free end of the positioning seat 441 and the positioning blade plate 443 is located on the side of the positioning seat 441 close to the supporting shaft 21, and the positioning blade plate 443 and the positioning seat 441 are arranged in an inverted L shape. A snap-in groove 225 is provided at the bottom of the welding avoidance groove 221 of the support pad 22 corresponding to the positioning blade plate 443, and the snap-in groove 225 is used for the positioning blade plate 443 to be inserted. The swing driving member 442 is connected to the positioning seat 441 and is used to drive the positioning seat 441 to drive the positioning blade 443 to move toward or away from the support pad 22 of the support shaft 21. In this embodiment, the swing driving member 442 is a cylinder. When the positioning seat 441 swings until the positioning blade 443 is inserted into the clamping groove 225 on the support pad 22, the positioning blade 443 is arranged vertically.

[0060] Through the setting of the positioning assembly 44, before the annular plate is inserted into the support shaft 21, the swing driving member 442 first drives the positioning seat 441 to drive the positioning blade plate 443 to swing in the direction close to the support pad 22 of the support shaft 21, until the positioning blade plate 443 is embedded in the clamping groove 225 at the bottom of the welding avoidance groove 221 of the support pad 22. When the annular plate is subsequently inserted into the support shaft 21, the two splicing sides of the annular plate are respectively located on the opposite sides of the positioning blade plate 443, so that the two splicing sides of the annular plate are quickly positioned on the support pad 22; then the two splicing sides of the annular plate are driven by the clamping mechanism 3 to respectively abut against the opposite sides of the positioning blade plate 443, and at the same time, the corresponding pressing plates 42 are driven downward by the lifting driving members 43 of the two limiting parts, so as to respectively press the two splicing sides of the annular plate against the support pad 22; then the clamping limit of the clamping mechanism 3 on the annular plate is temporarily released; at the same time, At the same time, the clamping limit of the pressure plate 42 on the splicing side of the annular plate is released, so that the swing driving member 442 drives the positioning seat 441 to drive the positioning knife plate 443 away from the supporting pad 22. After the positioning knife plate 443 is moved out from the supporting 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 driving member 43 of the limit seat 41 that has released the clamping state drives the pressure plate 42 to move downward, so as to press the corresponding splicing side of the annular plate against the supporting pad 22, thereby realizing the final positioning of the annular plate.

[0061] Reference Fig.12 The limiting mechanism 4 is provided with a supporting assembly 45 for supporting the feeding end 212 of the supporting shaft 21. The supporting assembly 45 includes a supporting portion and a movable driving member 452. The supporting portion is used to temporarily support the feeding end 212 of the supporting shaft 21. The supporting portion is located between the two limiting seats 41 and is arranged close to the feeding end 212 of the supporting shaft 21. The corresponding supporting portions on both sides of the feeding end 212 of the supporting shaft 21 are convexly provided with a clamping shaft 25. The supporting portion includes a supporting seat 451. The two ends of the supporting seat 451 are respectively a rotating end and a free end. The two opposite sides of the rotating end of the supporting seat 451 are respectively rotatably connected to the opposite sides of the two limiting seats 41. The axial direction of the rotating axis of the rotating end of the supporting seat 451 is arranged parallel to the axial direction of the clamping shaft 25. Two clamping notches 4511 are provided on the free end of the supporting seat 451 close to the side of the supporting shaft 21 corresponding to the two clamping shafts 25 at the feeding end 212 of the supporting shaft 21. The clamping notches 4511 are used for the corresponding clamping shafts 25 to be embedded. The movable driving member 452 is drivingly connected to the rotating end of the support seat 451, and is used to drive the support seat 451 to swing around the rotation axis of its own rotating end toward or away from the feeding end 212 of the support shaft 21. In this embodiment, the movable driving member 452 is a cylinder.

[0062] Before the annular plate to be welded is subsequently inserted onto the supporting shaft 21, the movable driving member 452 first drives the support seat 451 to swing away from the fixed end 211 of the supporting shaft 21, so as to facilitate the annular plate to be inserted into the supporting shaft 21 through the feeding end 212 of the supporting shaft 21. After the annular plate is inserted onto the supporting shaft 21, the movable driving member 452 drives the support seat 451 to swing toward the feeding end 212 of the supporting shaft 21, until the two engaging notches 4511 at the free end of the support seat 451 are respectively engaged with the two engaging shafts 25 at the fixed end 211 of the supporting shaft 21, so as to achieve auxiliary support of the fixed end 211 of the supporting shaft 21 by the supporting portion, so as to improve the overall rigidity of the supporting shaft 21 and reduce the deformation of the supporting shaft 21 under stress during the subsequent welding process.

[0063] Reference Fig.13 The automatic welding mechanism 5 includes a three-axis linear module 51 and a welding gun 52. The three-axis linear module 51 is installed above two limit seats 41, and the length direction of the X-axis linear module in the three-axis linear module 51 is arranged parallel to the axial direction of the support shaft 21. The welding gun 52 is connected to the slide of the Z-axis module in the three-axis linear module 51, and the welding gun 52 is located between the two limit seats 41. When welding the straight seam of the annular plate in the subsequent process, the three-axis linear module 51 drives the welding gun 52 to move along the straight seam of the annular plate on the support shaft 21, and the welding gun 52 is used to weld the straight seam of the annular plate.

[0064] The implementation principle of the embodiment of the present application is that when welding the straight seam of the annular plate by the automatic straight seam welding equipment, the following steps are included: S1: The positioning assembly 44 is in place: the positioning seat 441 is driven by the swing driving member 442 to drive the positioning blade 443 to swing until the positioning blade 443 is inserted into the clamping groove 225 on the support pad 22 of the support shaft 21.

[0065] S2: Opening the feeding port: Open the feeding port 10 through the pneumatic sliding door 11 at the feeding port 10 of the frame 1; S3: Workpiece positioning: insert the annular plate to be welded into the supporting shaft 21 through the feeding end 212 of the supporting shaft 21, and make the two splicing sides of the annular plate be located at the opposite sides of the positioning knife plate 443 respectively.

[0066] S4: Initial positioning of the workpiece: The two splicing sides of the annular plate are driven to approach each other through the clamping mechanism 3 until the two splicing sides of the annular plate are respectively in contact with the opposite sides of the positioning knife plate 443; at the same time, the lifting drive components 43 of the two limiting parts drive the corresponding limiting plates to move downward to fix the splicing sides of the annular plate on the supporting pad 22 respectively.

[0067] S5: The positioning assembly 44 is reset: the clamping mechanism 3 temporarily releases the clamping limit of the annular plate; at the same time, a limit portion releases the clamping limit of the pressure plate 42 on the splicing side of one side of the annular plate; the positioning bracket is driven by the swing drive member 442 to drive the positioning knife plate 443 away from the support pad 22 of the support shaft 21.

[0068] 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 member 43 at the limiting portion that releases the clamping state drives the pressure plate 42 downward to clamp and limit the corresponding splicing side of the annular plate to the support pad 22.

[0069] S7: The support assembly 45 is in place: the support seat 451 is driven to swing toward the fixed end 211 of the support shaft 21 by the movable driving member 452 until the two engaging notches 4511 on the support seat 451 are respectively engaged with the two engaging shafts 25 at the feeding end 212 of the support shaft 21.

[0070] S8: Closing the feeding port 10: closing the feeding port 10 of the rack 1 by means of the pneumatic sliding door 11; S9: Straight seam welding: The straight seam of the annular plate is welded by the automatic welding structure.

[0071] The automatic straight seam welding equipment of the present application can realize automatic clamping and limiting of annular plates, as well as automatic welding of straight seams of annular plates, which effectively reduces the difficulty of straight seam welding of annular plates and improves welding efficiency.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic straight seam welding device, characterized in that: It comprises a frame (1), wherein a supporting mechanism (2), a clamping mechanism (3), a limiting mechanism (4) and an automatic welding mechanism (5) are provided inside the frame (1); The support mechanism (2) comprises a horizontally arranged support shaft (21), a support pad (22) is embedded on the top of the support shaft (21), and the support pad (22) is used for overlapping the two splicing sides of the annular plate; The clamping mechanism (3) is located below the supporting mechanism (2), and the clamping mechanism (3) is used to drive the two splicing sides of the annular plate to approach each other; The limiting mechanism (4) is located above the supporting mechanism (2), and the limiting mechanism (4) is used to press the two spliced ​​sides of the annular plate to be limited on the supporting cushion block (22); The automatic welding mechanism (5) is located above the limiting mechanism (4), and the automatic welding mechanism (5) is used to weld two joint sides of the annular plate located on the supporting cushion block (22) of the supporting shaft (21).

2. The automatic straight seam welding equipment according to claim 1, characterized in that: The clamping mechanism (3) comprises a base (30), and the base (30) is horizontally rotatably connected to connecting seats (31) on both sides thereof, and the base (30) is provided with a swing driving assembly (301) for driving the two connecting seats (31) to swing towards or away from each other; a plurality of hoops (34) are provided between the two connecting seats (31), and a support plate (33) is supported on the top of each connecting seat (31), and the support plate (33) is arranged close to the side of the supporting shaft (21); the connecting seat (31) A winding shaft (35) is also rotatably supported on the connecting seat (31), the winding shaft (35) being located below the supporting plate (33), and the axial direction of the winding shaft (35) being arranged parallel to the axial direction of the rotating end of the connecting seat (31); a rotary driving member (351) for driving the corresponding winding shaft (35) to rotate is arranged on the connecting seat (31); the two ends of the hoop (34) are respectively wound around the supporting plates (33) at the top of the two connecting seats (31), and are respectively connected to the winding shafts (35) at the two connecting seats (31).

3. An automatic straight seam welding device according to any one of claims 1-2, characterized in that: The limiting mechanism (4) comprises two limiting parts arranged opposite to each other, and the two limiting parts are respectively located on two opposite sides of the supporting shaft (21); the limiting part comprises a limiting seat (41), and a pressing plate (42) and a lifting driving member (43) for driving the pressing plate (42) to move up and down vertically are arranged at the bottom of the limiting seat (41).

4. The automatic straight seam welding equipment according to claim 3 is characterized in that: The upper surface of the support pad (22) is provided with a welding avoidance groove (221) along its length direction.

5. The automatic straight seam welding equipment according to claim 3 is characterized in that: The limiting mechanism (4) is provided with a positioning assembly (44), the positioning assembly (44) is located on a limiting seat (41), and the positioning assembly (44) is arranged close to the supporting shaft (21), the positioning assembly (44) comprises a positioning part and a swing driving member (442), the positioning part comprises a positioning seat (441) and a positioning blade (443); the two ends of the positioning seat (441) are respectively a hinged end and a free end, 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 driving member (442) is drivingly connected to the positioning seat (441), and the swing driving member (442) is used to drive the positioning seat (441) to swing towards or away from the support pad (22) of the support shaft (21); a clamping groove (225) is provided at the bottom of the welding avoidance groove (221) of the support pad (22), and the clamping groove (225) is used for the positioning blade (443) to be embedded.

6. The automatic straight seam welding equipment according to claim 5, characterized in that: The two ends of the supporting shaft (21) are respectively a fixed end (211) and a feeding end (212); the fixed end (211) of the supporting shaft (21) is connected to the bottom of the limiting seat (41) through a connecting plate (24); a supporting assembly (45) is also provided on the limiting mechanism (4); the supporting assembly (45) is close to the feeding end (212) of the supporting shaft (21); the supporting assembly (45) comprises a supporting portion and a movable driving member (452); the supporting portion is used to support the feeding end (212) of the supporting shaft (21); the movable driving member (452) is drivingly connected to the supporting portion; the movable driving member (452) is used to drive the supporting portion to move in a direction close to or away from the feeding end (212) of the supporting shaft (21).

7. The automatic straight seam welding equipment according to claim 4, characterized in that: The support pad (22) is provided with an air supply hole (222) inside along its length direction, and a plurality of air outlet holes (223) are provided at the bottom of the welding air avoidance groove (221), and the plurality of air outlet holes (223) are connected to the air supply hole (222).

8. The automatic straight seam welding equipment according to claim 4, characterized in that: A cooling circulation pipe (224) is installed in the support cushion block (22).

9. The automatic straight seam welding equipment 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 respectively located on opposite sides of the support cushion block (22), and the reference flat steels (23) are arranged higher than the support cushion block (22), and the support shaft (21) is provided with two locking members (231) corresponding to the two reference flat steels (23), and the locking members (231) are used to limit the sliding of the corresponding reference flat steels (23).

10. The automatic straight seam welding equipment according to claim 2, characterized in that: The clamping mechanism (3) further comprises a counterweight portion, the counterweight portion comprising a plurality of counterweight strips (36), the counterweight strips (36) being located at the bottom of the suspended section of the clamp (34) and connected to the bottom of the suspended sections of the plurality of clamps (34).

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