Metal structural part welding rotation auxiliary device and welding method thereof

Abstract

The invention relates to the technical field of metal structural part welding, and discloses a metal structural part welding rotation auxiliary device which comprises a mounting base, a hollow shaft is rotationally connected to the mounting base, a placement base is fixed to the upper end of the hollow shaft, and a structural part body is placed on the placement base; a plurality of fixing assemblies used for clamping the structural part body are arranged on the containing base, a first abutting rod is slidably connected into the hollow shaft, a first spring is connected between the first abutting rod and the hollow shaft, and a conical abutting block is fixed to the upper end of the first abutting rod; the conical abutting block abuts against the multiple fixing assemblies. The purpose of automatically adjusting the position of the structural part body can be achieved, the circle centers of the flange plate, the containing base and the connecting pipe opening can be located on the same straight line, and the welding precision and quality of the structural part body can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal structure welding, and specifically relates to a rotary auxiliary device for metal structure welding and a welding method thereof. Background Technique

[0002] There are various styles of metal structure parts. When welding some metal structure parts, the rotary method is adopted. The advantages mainly include improving welding quality, accelerating welding speed, reducing the heat affected zone, and improving production efficiency. Rotary welding can evenly distribute heat, reduce the problem of uneven heat in the welding area, thus avoiding defects in the weld seam and improving the quality of the weld seam. Accelerate welding speed: Rotary welding can generate welding in the heating area by rotating the workpiece, thereby accelerating the welding speed and improving production efficiency.

[0003] Among them, the metal flange connection structure part is a kind of metal structure part. During processing, the flange plate needs to be welded to the metal connection pipe orifice. Currently, during the welding process of the metal flange connection structure part, in order to improve the welding quality, first fix the flange plate on the welding table, and then place the connection pipe orifice on the flange plate. It is necessary to adjust the position of the workpiece to make the hole diameters and the center positions of the two workpieces align. Finally, use a fixture to clamp and fix the outer surface of the connection pipe orifice. The entire clamping process of the flange connection structure part is time-consuming and laborious, and it is easy to cause position deviation, resulting in the centers of the two fixed workpieces not being on the same straight line, which is likely to cause the problem of low welding accuracy. At the same time, the position of the fixture is likely to obstruct the welding equipment during the rotary welding of the workpiece, affecting the welding efficiency. Summary of the Invention

[0004] The present invention provides a rotary auxiliary device for metal structure welding and a welding method thereof, which can achieve the purpose of automatically adjusting the position of the structure part body, enabling the centers of the flange plate, the placement seat, and the connection pipe orifice to be on the same straight line, and having the beneficial effect of improving the welding accuracy and quality of the structure part body. It solves the problems mentioned in the above background technique that the entire clamping process of the flange connection structure part is time-consuming and laborious, and it is easy to cause position deviation, resulting in the centers of the two fixed workpieces not being on the same straight line, which is likely to cause the problem of low welding accuracy. At the same time, the position of the fixture is likely to obstruct the welding equipment during the rotary welding of the workpiece, affecting the welding efficiency.

[0005] The present invention provides the following technical solution: A welding rotation assisting device for metal structural parts, including a mounting base, on which a hollow shaft is rotatably connected. A placing base is fixed at the upper end of the hollow shaft, and a structural part body is placed on the placing base. A plurality of fixing components for clamping the structural part body are arranged on the placing base. A first abutting rod is slidably connected in the hollow shaft, and a first spring is connected between the first abutting rod and the hollow shaft. A conical abutting block is fixed at the upper end of the first abutting rod, and the conical abutting block abuts against the plurality of fixing components;

[0006] A motor assembly for driving the hollow shaft to rotate is fixed on the mounting base. A servo electric cylinder is fixed on the mounting base. An L-shaped connecting rod is fixed at the output end of the servo electric cylinder. The L-shaped connecting rod is slidably connected on the mounting base, and a wedge-shaped abutting strip is fixed at one end of the L-shaped connecting rod. The wedge-shaped abutting strip abuts against the lower end of the first abutting rod.

[0007] As an alternative solution of the welding rotation assisting device for metal structural parts and its welding method of the present invention, wherein: The fixing component includes an abutting bracket, which is elastically connected to the placing base through a second spring. One end of the abutting bracket abuts against the conical abutting block. A pressing block is slidably connected on the abutting bracket, and a third spring is connected between the pressing block and the abutting bracket. A plurality of equally spaced mounting grooves are formed on the circumferential surface of the placing base. A first tipping plate is arranged in the mounting groove. The first tipping plate is rotatably connected to the placing base, and a first torsion spring is connected between the first tipping plate and the placing base. The other end of the abutting bracket abuts against one end of the first tipping plate.

[0008] As an alternative solution of the welding rotation assisting device for metal structural parts and its welding method of the present invention, wherein: The motor assembly includes a servo motor, which is fixed on the mounting base. A first gear is fixed on the motor shaft of the servo motor. A second gear is fixed on the hollow shaft, and the second gear meshes with the first gear.

[0009] As an alternative solution of the welding rotation assisting device for metal structural parts and its welding method of the present invention, wherein: A vertical rod is fixed on the L-shaped connecting rod. A U-shaped block is fixed on the vertical rod. Two first guide rods are fixed on the U-shaped block. A cleaning bracket is slidably connected on the two first guide rods. A cleaning block is fixed at one end of the cleaning bracket, and a fourth spring is connected between the other end of the cleaning bracket and the U-shaped block.

[0010] As an optional solution of the metal structure welding rotation auxiliary device and welding method described in the present invention, a toggle rod is fixed on the cleaning bracket, and a plurality of second resistance rods are provided above the mounting seat, and the plurality of second resistance rods are all fixed on the circumferential surface of the hollow shaft.

[0011] As an optional scheme of the metal structure welding rotation auxiliary device and its welding method described in the present invention, wherein: a cleaning seat is provided above the cleaning block, an L-shaped bracket is fixed on the cleaning seat, a second guide rod is fixed on the mounting seat, the L-shaped bracket is slidably connected to the second guide rod, and a fifth spring is connected between the L-shaped bracket and the second guide rod, both sides of the cleaning seat are slidably connected with a contact head, one end of the contact head is fixed with a brush plate for cleaning the cleaning block, a sixth spring is connected between the contact head and the cleaning seat, a 匚-shaped contact frame is slidably connected in the cleaning seat, a seventh spring is connected between the 匚-shaped contact frame and the cleaning seat, a third contact rod is fixed on one side of the 匚-shaped contact frame, and a flushing nozzle is fixed on the cleaning seat.

[0012] As an optional scheme of the metal structure welding rotation auxiliary device and the welding method thereof described in the present invention, wherein: a third guide rod is arranged on the mounting seat, a strip plate is slidably connected to the third guide rod, the strip plate is elastically connected to the mounting seat through an eighth spring, a sewage collecting box is fixed on the strip plate, a resistance piece is fixed on the sewage collecting box, the resistance piece is located at one end of the third resistance rod, a resistance wedge is fixed at the lower end of the strip plate, and a resistance strip that resists the resistance wedge is fixed on the vertical rod.

[0013] As an optional solution of the metal structure welding rotation auxiliary device and the welding method thereof described in the present invention, wherein: a third interference frame is fixed on the interference wedge block, a fourth interference rod is in contact with the third interference frame, the fourth interference rod is elastically connected to the L-shaped bracket through a ninth spring, a second seesaw is rotatably connected to the L-shaped bracket, and a second torsion spring is connected between the second seesaw and the L-shaped bracket.

[0014] As an optional solution of the metal structure welding rotation auxiliary device and welding method thereof described in the present invention, one end of the second rocker plate abuts against a fifth abutment rod, the fifth abutment rod is elastically connected to the L-shaped bracket through a tenth spring, and a plurality of equally spaced arc-shaped abutment blocks are fixed on the side of the wedge-shaped abutment strip.

[0015] A method for welding a metal structural part comprises the following specific steps:

[0016] Step 1: Loading of metal structural parts: Place the flange in the structural part body on the placement seat provided above the mounting seat, and then place the connecting pipe opening on the flange. Initially align the apertures of the two workpieces. When the piston rod of the servo electric cylinder retracts, it drives the wedge-shaped resistance bar on the L-shaped connecting rod to move horizontally and resist the lower end of the first resistance rod, so that the first resistance rod drives the conical resistance block to move in the placement seat and resist against a plurality of fixed components, so that a plurality of fixed components move horizontally on the placement seat, firmly press the flange against the placement seat, and at the same time firmly press the connecting pipe opening against the flange, and automatically adjust the position of the structural part body, so that the center of the flange and the center of the connecting pipe opening are in the same straight line;

[0017] Step 2: Cleaning of metal structural parts: The motor assembly drives the hollow shaft to rotate, prompting the placement seat to drive the structural part body to rotate synchronously, and the piston rod of the servo electric cylinder continues to move, so that the vertical rod fixed on the L-shaped connecting rod drives the cleaning bracket slidably connected on the 匚-shaped block to move horizontally, so that the cleaning block fixed on the cleaning bracket can be pressed against the structural part body to perform all-round cleaning on the welding surface to reduce impurities. At this time, several second contact rods fixed on the hollow shaft can intermittently and continuously contact with the toggle rod, so that the cleaning block can move back and forth horizontally during the cleaning process to improve the cleaning effect;

[0018] Step 3: Welding of metal structural parts. Adjust the position of the welding equipment to make the welding gun contact the rotating structural part body for welding, so that the flange of the structural part body and the connecting pipe mouth are welded together. At the same time, the cleaning block cleans the welded weld surface again to remove impurities generated by welding and improve the weld quality and reliability.

[0019] The cleaning block is moved to the cleaning seat on the L-shaped bracket and rinsed by the flushing nozzle, and the surface of the cleaning block is scrubbed with a brush plate. At the same time, the strip plate drives the sewage collection box to automatically move to the bottom of the cleaning seat to collect sewage. When the strip plate moves, the third friction frame can be linked with the fourth friction rod, the second rocker plate and the fifth friction rod, so that the fifth friction rod extends outward and intermittently and continuously collides with several arc-shaped friction blocks on the wedge-shaped friction strip, so that the L-shaped bracket drives the cleaning seat to move back and forth, thereby improving the self-cleaning effect of the cleaning block. At the same time, when the cleaning seat moves, the third friction rod can conflict with the friction sheet fixed on the sewage collection box, so that the 匚-shaped friction frame conflicts with the two friction heads, driving the two brush plates to move relative to each other to squeeze the moisture in the cleaning block.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the metal structural welding rotation auxiliary device, the flange of the structural body and the connecting pipe mouth can be synchronously pressed together by a plurality of fixing components arranged on the placement seat, so that the structural body can be firmly fixed on the placement seat, and the position of the structural body can be automatically adjusted at the same time, so that the centers of the flange, the placement seat and the connecting pipe mouth can be in a straight line, which can improve the welding accuracy and quality of the structural body. The positions of the L-shaped connecting rod and the wedge-shaped contact strip can be adjusted by the servo electric cylinder, so that the wedge-shaped contact strip can contact the first contact rod, which can drive the conical contact block to move up and contact with the contact brackets of the plurality of fixing components, so that the contact brackets can slide on the placement seat, so that the pressing block can press against the inner wall of the flange and the connecting pipe mouth at the same time;

[0022] When the interference bracket continues to move, it can achieve the purpose of interfering with the first rocker plate, and when the first rocker plate is deflected, the flange can be clamped and fixed, so that the position of the structural part body is relatively stable when the welding equipment is welding. The hollow shaft can be driven to rotate through the motor assembly, so that the placement seat and the structural part body rotate synchronously. When the welding gun of the welding equipment is against the welding surface for welding, the welding quality can be improved, the welding speed can be accelerated, the heat affected zone can be reduced, and the production efficiency of metal structural parts can be improved.

[0023] 2. In the metal structural part welding rotation auxiliary device, the vertical rod arranged on the L-shaped connecting rod can be elastically connected to the cleaning bracket through the 匚-shaped block, the first guide rod and the fourth spring, so that the cleaning block fixed on the cleaning bracket can indirectly move synchronously with the L-shaped connecting rod, so that the cleaning block can be against the welding surface of the structural part body. With the rotation of the structural part body, the purpose of cleaning the dust on the welding surface can be achieved, thereby improving the welding quality. At the same time, during the movement of the cleaning bracket, the toggle rod can be driven close to the hollow shaft, so that during the rotation of the hollow shaft, several of the second abutting rods are driven to intermittently and continuously abut against the toggle rod, so that the cleaning bracket moves back and forth on the 匚-shaped block, and the cleaning block moves back and forth horizontally during the cleaning process, which can improve the cleaning effect. When the welding of the structural part body is completed, the surface of the welded weld can continue to be cleaned by the cleaning block to remove impurities generated by welding, thereby improving the quality and reliability of the weld.

[0024] 3. In the welding rotation auxiliary device for the metal structural member, after the cleaning block finishes cleaning the weld seam, the wedge-shaped contact bar disengages from the first contact rod, the fixing assembly resets, and the motor assembly stops working, which facilitates the removal of the structural member body from the placement seat. At the same time, the cleaning block can be moved into the cleaning seat on the L-shaped bracket. Meanwhile, the contact wedge fixed at the lower end of the strip plate disengages from the contact bar fixed on the vertical rod, prompting the strip plate to drive the sewage collection box to automatically move below the cleaning seat, facilitating the centralized treatment of the sewage after the cleaning block is rinsed by the flushing nozzle. The impurities attached can be cleaned off by the brush plates arranged on both sides of the cleaning seat;

[0025] During the movement of the strip plate, the third contact frame fixed on the contact wedge can be made to contact the fourth contact rod fixed on the L-shaped bracket, prompting the fourth contact rod to push the second rocker to deflect on the L-shaped bracket and push the fifth contact rod to move horizontally, so that the fifth contact rod moves to the side of the wedge-shaped contact bar and can intermittently and continuously contact a number of arc-shaped contact blocks during the movement of the wedge-shaped contact bar, driving the L-shaped bracket and the cleaning seat on the L-shaped bracket to reciprocate on the cleaning block, improving the cleaning effect of the brush plates on the cleaning block. At the same time, during the horizontal reciprocating movement of the cleaning seat, the third contact rod can be made to contact the contact piece fixed on the sewage collection box, prompting the U-shaped contact frame to move horizontally and contact the two contact heads, thereby driving the two brush plates to move relatively to squeeze the water in the cleaning block for the next cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0027] Figure 2 is a structural cross-sectional view of the present invention.

[0028] Figure 3 is a structural schematic diagram of the mounting seat of the present invention.

[0029] Figure 4 is a cleaning structural schematic diagram of the present invention.

[0030] Figure 5 is a structural schematic diagram of the cleaning seat of the present invention.

[0031] Figure 6 is Figure 2 a partial enlarged schematic diagram at A in

[0032] Figure 7 is Figure 3 a partial enlarged schematic diagram at B in

[0033] Figure 8 is a flowchart of the welding method for the metal structural member of the present invention.

[0034] In the figure: 1, mounting seat; 2, hollow shaft; 201, servo motor; 202, first gear; 203, second gear; 3, placement seat; 301, abutment bracket; 302, second spring; 303, abutment block; 304, third spring; 305, mounting groove; 306, first seesaw; 307, first torsion spring; 4, structural body; 5, first abutment rod; 6, first spring; 7, conical abutment block; 8, servo electric cylinder; 9, L-shaped connecting rod; 10, wedge-shaped abutment strip; 11, vertical rod; 12, 匚-shaped block; 121, first guide rod; 13, cleaning bracket; 14, cleaning block; 15, fourth spring; 16, toggle rod; 17 , the second resistance rod; 18, cleaning seat; 19, L-shaped bracket; 20, the second guide rod; 21, the fifth spring; 22, the resistance head; 23, the brush plate; 24, the sixth spring; 25, the 匚-shaped resistance frame; 26, the seventh spring; 27, the third resistance rod; 28, the third guide rod; 29, the strip plate; 30, the flushing nozzle; 31, the eighth spring; 32, the sewage collection box; 321, the resistance sheet; 33, the resistance wedge block; 34, the resistance strip; 35, the third resistance frame; 36, the fourth resistance rod; 37, the ninth spring; 38, the second rocker; 39, the second torsion spring; 40, the fifth resistance rod; 41, the tenth spring; 42, the arc-shaped resistance block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figures 1 to 8 A metal structural member welding rotation auxiliary device comprises a mounting seat 1, a hollow shaft 2 is rotatably connected to the mounting seat 1, a placement seat 3 is fixed to the upper end of the hollow shaft 2, a structural member body 4 is placed on the placement seat 3, a plurality of fixed components for clamping the structural member body 4 are arranged on the placement seat 3, a first resistance rod 5 is slidably connected in the hollow shaft 2, a first spring 6 is connected between the first resistance rod 5 and the hollow shaft 2, a conical resistance block 7 is fixed to the upper end of the first resistance rod 5, and the conical resistance block 7 is in conflict with a plurality of fixed components;

[0037] A motor assembly for driving the hollow shaft 2 to rotate is fixed on the mounting base 1, a servo electric cylinder 8 is fixed on the mounting base 1, an L-shaped connecting rod 9 is fixed on the output end of the servo electric cylinder 8, the L-shaped connecting rod 9 is slidably connected to the mounting base 1, and a wedge-shaped interference strip 10 is fixed at one end of the L-shaped connecting rod 9, and the wedge-shaped interference strip 10 interferes with the lower end of the first interference rod 5.

[0038] The fixing assembly includes a resistance bracket 301, which is elastically connected to the placement seat 3 through a second spring 302, one end of the resistance bracket 301 is in resistance with the conical resistance block 7, a tightening block 303 is slidably connected to the resistance bracket 301, a third spring 304 is connected between the tightening block 303 and the resistance bracket 301, a plurality of equally spaced mounting grooves 305 are provided on the circumferential surface of the placement seat 3, a first rocker 306 is arranged in the mounting groove 305, the first rocker 306 is rotatably connected to the placement seat 3, and a first torsion spring 307 is connected between the first rocker 306 and the placement seat 3, the other end of the resistance bracket 301 is in resistance with one end of the first rocker 306.

[0039] The motor assembly includes a servo motor 201 , which is fixed on the mounting seat 1 , and a first gear 202 is fixed on the motor shaft of the servo motor 201 , and a second gear 203 is fixed on the hollow shaft 2 , and the second gear 203 and the first gear 202 are meshed with each other.

[0040] When using the device, refer to Figures 1 - 3 , place the flange in the structural body 4 on the placement seat 3 set above the mounting seat 1, and then place the connecting pipe mouth in the structural body 4 on the flange, preliminarily align the apertures of the two workpieces, and when the piston rod of the servo electric cylinder 8 retracts, the wedge-shaped resistance strip 10 on the L-shaped connecting rod 9 moves horizontally to resist the lower end of the first resistance rod 5, prompting the first resistance rod 5 to slide on the hollow shaft 2, and the first spring 6 accumulates force. The first resistance rod 5 drives the conical resistance block 7 to move upward and resists with the resistance bracket 301 in several fixed components, prompting the resistance bracket 301 to drive the tightening block 303 to move horizontally, and the second spring 302 accumulates force, so that the tightening block 303 can be simultaneously pressed against the flange of the structural body 4 and the inner wall of the connecting pipe mouth. When the resistance bracket 301 continues to move, the second spring 302 Force is accumulated, and at the same time, one end of the bracket 301 conflicts with the first seesaw 306 set in the installation groove 305, causing the first seesaw 306 to rotate on the placement seat 3, so as to clamp and fix the flange, and the purpose of automatically adjusting the position of the structural part body 4 can be achieved, so that the center of the flange, the placement seat 3 and the connecting pipe mouth can be in a straight line. The servo motor 201 in the motor assembly drives the first gear 202 to rotate, and the second gear 203 and the first gear 202 are engaged with each other to drive the hollow shaft 2 to rotate, so that the placement seat 3 drives the structural part body 4 to rotate synchronously, and the welding gun of the welding equipment is against the welding surface of the structural part body 4, and the rotating structural part body 4 can be welded, which can improve the welding quality, speed up the welding speed, reduce the heat affected zone and the production efficiency of metal structures.

[0041] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 8, a vertical rod 11 is fixed on the L-shaped connecting rod 9, a U-shaped block 12 is fixed on the vertical rod 11, two first guide rods 121 are fixed on the U-shaped block 12, a cleaning bracket 13 is slidably connected to the two first guide rods 121, a cleaning block 14 is fixed at one end of the cleaning bracket 13, and a fourth spring 15 is connected between the other end of the cleaning bracket 13 and the U-shaped block 12.

[0042] A toggle rod 16 is fixed on the cleaning bracket 13, and a plurality of second abutting rods 17 are arranged above the mounting seat 1, and the plurality of second abutting rods 17 are all fixed on the circumferential surface of the hollow shaft 2.

[0043] In order to improve the welding quality of the structural member body 4, it is necessary to clean the welding surface before welding and the weld surface after welding. Refer to Figures 1 - 5 , when the piston rod of the servo cylinder 8 drives the L-shaped connecting rod 9 to move horizontally, the vertical rod 11 fixed on the L-shaped connecting rod 9 also moves synchronously, prompting the cleaning bracket 13 slidably connected to the U-shaped block 12 to move horizontally, and the cleaning block 14 fixed on the cleaning bracket 13 can be driven to abut against the structural member body 4 to perform a full-range cleaning of the welding surface to reduce impurities. The welding surface of the cleaned structural member body 4 is welded by the welding torch of the welding equipment. When the structural member body 4 rotates, the purpose of cleaning the weld surface by the cleaning block 14 can be realized, and the impurities at the weld are reduced. When the cleaning bracket 13 moves horizontally, the toggle rod 16 can be driven to move horizontally synchronously, prompting the toggle rod 16 to be within the abutting range close to the second abutting rod 17. When the hollow shaft 2 drives the plurality of second abutting rods 17 to rotate, intermittent continuous abutting can occur with the toggle rod 16, prompting the cleaning bracket 13 to reciprocate on the two first guide rods 121. The fourth spring 15 continuously stores energy and releases elastic force, so that the cleaning block 14 moves horizontally back and forth during the cleaning process, which can improve the cleaning effect.

[0044] Embodiment 3, this embodiment is an improvement made on the basis of Embodiment 1. Specifically, please refer to Figures 1 to 8 , a cleaning seat 18 is arranged above the cleaning block 14, an L-shaped bracket 19 is fixed on the cleaning seat 18, a second guide rod 20 is fixed on the mounting seat 1, the L-shaped bracket 19 is slidably connected to the second guide rod 20, and a fifth spring 21 is connected between the L-shaped bracket 19 and the second guide rod 20. Both sides of the cleaning seat 18 are slidably connected with abutting heads 22, a brush plate 23 for cleaning the cleaning block 14 is fixed at one end of the abutting head 22, a sixth spring 24 is connected between the abutting head 22 and the cleaning seat 18, a U-shaped abutting frame 25 is slidably connected in the cleaning seat 18, a seventh spring 26 is connected between the U-shaped abutting frame 25 and the cleaning seat 18, a third abutting rod 27 is fixed on one side of the U-shaped abutting frame 25, and a flushing nozzle 30 is fixed on the cleaning seat 18.

[0045] A third guide rod 28 is provided on the mounting seat 1, and a strip plate 29 is slidably connected to the third guide rod 28. The strip plate 29 is elastically connected to the mounting seat 1 through an eighth spring 31. A sewage collecting box 32 is fixed on the strip plate 29, and a resistance piece 321 is fixed on the sewage collecting box 32. The resistance piece 321 is located at one end of the third resistance rod 27, and a resistance wedge 33 is fixed to the lower end of the strip plate 29. A resistance strip 34 that resists the resistance wedge 33 is fixed on the vertical rod 11.

[0046] A third resistance frame 35 is fixed on the resistance wedge 33, and a fourth resistance rod 36 is abutted on the third resistance frame 35. The fourth resistance rod 36 is elastically connected to the L-shaped bracket 19 through a ninth spring 37. A second rocker plate 38 is rotatably connected to the L-shaped bracket 19, and a second torsion spring 39 is connected between the second rocker plate 38 and the L-shaped bracket 19.

[0047] One end of the second rocker plate 38 abuts against a fifth abutment rod 40 , which is elastically connected to the L-shaped bracket 19 via a tenth spring 41 , and a plurality of equally spaced arc-shaped abutment blocks 42 are fixed on the side surface of the wedge-shaped abutment strip 10 .

[0048] After cleaning, the cleaning block 14 has impurities attached to the surface and needs to be cleaned before the next structural member body 4 can be cleaned. Figures 3 - 7 When the piston rod of the servo electric cylinder 8 retracts, the wedge-shaped resistance strip 10 is driven to release the resistance from the first resistance rod 5. On the one hand, the fixing assembly releases the tightness of the welded structural body 4, so that the structural body 4 can be removed from the placement seat 3. On the other hand, the cleaning block 14 is automatically moved to the cleaning seat 18 provided on the L-shaped bracket 19 for cleaning. At the same time, the resistance strip 34 fixed on the vertical rod 11 releases the resistance wedge 33 fixed at the lower end of the strip plate 29, so that the strip plate 29 slides on the third guide rod 28 provided on the mounting seat 1 under the elastic force of the eighth spring 31, so that the sewage collection box 32 fixed at the upper end of the strip plate 29 can automatically move to the bottom of the cleaning seat 18.

[0049] When the cleaning block 14 moves into the cleaning seat 18, the surface of the cleaning block 14 is rinsed through the provided rinsing nozzle 30, so that the rinsed impurities can flow into the sewage collection box 32. The cleaning block 14 contacts with the brush plates 23 arranged on both sides inside the cleaning seat 18, and the stubborn stains on the surface of the cleaning block 14 can be scrubbed by the brush plates 23. When the strip plate 29 slides on the mounting seat 1, it can drive the third contact frame 35 arranged on the contact wedge 33 to contact with the fourth contact rod 36 connected to the L-shaped bracket 19, prompting the fourth contact rod 36 to slide on the L-shaped bracket 19, and the ninth spring 37 is charged. When the fourth contact rod 36 slides, it can contact with one end of the second rocker 38 rotatably connected to the L-shaped bracket 19, prompting the second rocker 38 to deflect, and the second torsion spring 39 is charged. The other deflected end of the second rocker 38 contacts with the fifth contact rod 40, prompting the fifth contact rod 40 to approach the side of the wedge-shaped contact strip 10, and the tenth spring 41 is charged. When the wedge-shaped contact strip 10 moves, it can drive a plurality of arc-shaped contact blocks 42 to move synchronously, and the plurality of arc-shaped contact blocks 42 can intermittently and continuously contact with the fifth contact rod 40, thereby driving the L-shaped bracket 19 to reciprocate on the second guide rod 20. The fifth spring 21 is continuously charged and releases elastic force, prompting the cleaning seat 18 to drive the brush plates 23 to reciprocate on the cleaning block 14, further improving the cleaning effect.

[0050] When the contact wedge 33 fixed to the lower end of the strip plate 29 is in the initial state, it is located on one side of the contact strip 34. When the vertical rod 11 moves, it can drive the contact strip 34 to contact with the contact wedge 33, prompting the strip plate 29 to drive the sewage collection box 32 to move to one side of the mounting seat 1, which can prevent the sewage collection box 32 from obstructing the moving position of the cleaning bracket 13 and affecting the work of the cleaning block 14. When the cleaning block 14 needs to be cleaned, the contact between the contact strip 34 and the contact wedge 33 is released, and the sewage collection box 32 can automatically move below the cleaning seat 18 to collect and process sewage. The brush plate 23 is L-shaped, which can reduce the cleaning dead angle of the cleaning block 14.

[0051] The cleaning block 14 will absorb a large amount of water during rinsing, and the water needs to be squeezed out during the cleaning process. Refer to Figures 4 - 7 When the cleaning seat 18 reciprocates horizontally, it can achieve the purpose of the third contact rod 27 contacting with the contact piece 321 fixed on the sewage collection box 32, prompting the third contact rod 27 to drive the U-shaped contact frame 25 to move horizontally inside the cleaning seat 18, and the seventh spring 26 is charged. It can achieve the two sides of the U-shaped contact frame 25 contacting with the contact head 22, so that the contact head 22 drives the brush plate 23 to move relatively, and the sixth spring 24 is charged, and the water in the cleaning block 14 can be squeezed to facilitate the next cleaning.

[0052] Example 4, please refer to Figures 1 to 8, a metal structural part welding method, comprising the following specific steps:

[0053] Step 1: Loading of metal structural parts. Place the flange in the structural part body 4 on the placement seat 3 set above the mounting seat 1, and then place the connecting pipe mouth on the flange. Preliminarily align the apertures of the two workpieces. When the piston rod of the servo electric cylinder 8 retracts, it drives the wedge-shaped contact strip 10 on the L-shaped connecting rod 9 to move horizontally and contact the lower end of the first contact rod 5, so that the first contact rod 5 drives the conical contact block 7 to move in the placement seat 3 and contact with several fixed components, so that several fixed components move horizontally on the placement seat 3, firmly press the flange against the placement seat 3, and also firmly press the connecting pipe mouth against the flange, and automatically adjust the position of the structural part body 4, so that the center of the flange and the center of the connecting pipe mouth are on the same straight line;

[0054] Step 2, cleaning of metal structural parts, the motor assembly drives the hollow shaft 2 to rotate, prompting the placement seat 3 to drive the structural part body 4 to rotate synchronously, and the piston rod of the servo electric cylinder 8 continues to move, so that the vertical rod 11 fixed on the L-shaped connecting rod 9 drives the cleaning bracket 13 slidably connected to the 匚-shaped block 12 to move horizontally, so that the cleaning block 14 fixed on the cleaning bracket 13 can be pressed against the structural part body 4 to perform all-round cleaning on the welding surface to reduce impurities. At this time, several second contact rods 17 fixed on the hollow shaft 2 can intermittently and continuously contact with the toggle rod 16, so that the cleaning block 14 can move back and forth horizontally during the cleaning process to improve the cleaning effect;

[0055] Step 3: Welding of metal structural parts. Adjust the position of the welding equipment to make the welding gun rest on the rotating structural body 4 for welding, so that the flange of the structural body 4 is welded to the connecting pipe. At the same time, the cleaning block 14 cleans the welded weld surface again to remove impurities generated by welding and improve the weld quality and reliability.

[0056] Step 4. Blanking and self-cleaning: The piston rod of the servo electric cylinder 8 drives the wedge-shaped contact bar 10 to release the contact with the first contact rod 5, the fixing assembly resets, and the motor assembly stops working. The welded structural part body 4 can be removed from the placing seat 3. Meanwhile, the cleaning block 14 moves into the cleaning seat 18 on the L-shaped bracket 19 and is rinsed through the flushing nozzle 30. The surface of the cleaning block 14 is scrubbed by the brush plate 23. Meanwhile, the strip plate 29 drives the sewage collection box 32 to automatically move under the cleaning seat 18 to collect sewage. When the strip plate 29 moves, it can realize the linkage between the third contact frame 35 and the fourth contact rod 36, the second rocker 38, and the fifth contact rod 40, so as to promote the fifth contact rod 40 to extend outwards and intermittently and continuously contact with a plurality of arc-shaped contact blocks 42 on the wedge-shaped contact bar 10, promoting the L-shaped bracket 19 to drive the cleaning seat 18 to reciprocate, improving the self-cleaning effect of the cleaning block 14. Meanwhile, when the cleaning seat 18 moves, the third contact rod 27 can contact with the contact piece 321 fixed on the sewage collection box 32, making the U-shaped contact frame 25 contact with the two contact heads 22, driving the two brush plates 23 to move relatively to squeeze the water in the cleaning block 14.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0058] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A welding rotation assisting device for metal structural parts, comprising a mounting base (1), characterized in that: A hollow shaft (2) is rotatably connected to the mounting base (1). A placing base (3) is fixed to the upper end of the hollow shaft (2). A structural member body (4) is placed on the placing base (3). A plurality of fixing components for clamping the structural member body (4) are arranged on the placing base (3). A first abutting rod (5) is slidably connected inside the hollow shaft (2). A first spring (6) is connected between the first abutting rod (5) and the hollow shaft (2). A conical abutting block (7) is fixed to the upper end of the first abutting rod (5). The conical abutting block (7) abuts against the plurality of fixing components. A motor assembly for driving the hollow shaft (2) to rotate is fixed to the mounting base (1). A servo electric cylinder (8) is fixed to the mounting base (1). An L-shaped connecting rod (9) is fixed to the output end of the servo electric cylinder (8). The L-shaped connecting rod (9) is slidably connected to the mounting base (1). One end of the L-shaped connecting rod (9) is fixed with a wedge-shaped abutting strip (10). The wedge-shaped abutting strip (10) abuts against the lower end of the first abutting rod (5).

2. The welding rotation auxiliary device for metal structural parts according to claim 1, wherein: The fixing component includes an abutting bracket (301). The abutting bracket (301) is elastically connected to the placing base (3) through a second spring (302). One end of the abutting bracket (301) abuts against the conical abutting block (7). A pressing block (303) is slidably connected to the abutting bracket (301). A third spring (304) is connected between the pressing block (303) and the abutting bracket (301). A plurality of equally spaced mounting grooves (305) are formed on the circumferential surface of the placing base (3). A first tipping plate (306) is arranged in the mounting groove (305). The first tipping plate (306) is rotatably connected to the placing base (3). A first torsion spring (307) is connected between the first tipping plate (306) and the placing base (3). The other end of the abutting bracket (301) abuts against one end of the first tipping plate (306).

3. The welding rotation assisting device for metal structural parts according to claim 2, characterized in that: The motor assembly includes a servo motor (201). The servo motor (201) is fixed to the mounting base (1). A first gear (202) is fixed to the motor shaft of the servo motor (201). A second gear (203) is fixed to the hollow shaft (2). The second gear (203) meshes with the first gear (202).

4. The welding rotation assisting device for metal structural parts according to claim 3, wherein: A vertical rod (11) is fixed to the L-shaped connecting rod (9). An L-shaped block (12) is fixed to the vertical rod (11). Two first guide rods (121) are fixed to the L-shaped block (12). A cleaning bracket (13) is slidably connected to the two first guide rods (121). A cleaning block (14) is fixed to one end of the cleaning bracket (13). A fourth spring (15) is connected between the other end of the cleaning bracket (13) and the L-shaped block (12).

5. The welding rotation assisting device for metal structural parts according to claim 4, wherein: A toggle rod (16) is fixed on the cleaning bracket (13), and a plurality of second abutment rods (17) are arranged above the mounting seat (1), and the plurality of second abutment rods (17) are all fixed on the circumferential surface of the hollow shaft (2).

6. The welding rotation assisting device for metal structural parts according to claim 5, wherein: A cleaning seat (18) is provided above the cleaning block (14), an L-shaped bracket (19) is fixed on the cleaning seat (18), a second guide rod (20) is fixed on the mounting seat (1), the L-shaped bracket (19) is slidably connected to the second guide rod (20), and a fifth spring (21) is connected between the L-shaped bracket (19) and the second guide rod (20), and both sides of the cleaning seat (18) are slidably connected to a contact head (22), one end of the contact head (22) A brush plate (23) for cleaning the cleaning block (14) is fixed thereto, a sixth spring (24) is connected between the abutment head (22) and the cleaning seat (18), a 匚-shaped abutment frame (25) is slidably connected inside the cleaning seat (18), a seventh spring (26) is connected between the 匚-shaped abutment frame (25) and the cleaning seat (18), a third abutment rod (27) is fixed to one side of the 匚-shaped abutment frame (25), and a flushing nozzle (30) is fixed on the cleaning seat (18).

7. The welding rotation assisting device for metal structural parts according to claim 6, characterized in that: The mounting seat (1) is provided with a third guide rod (28), a strip plate (29) is slidably connected to the third guide rod (28), the strip plate (29) is elastically connected to the mounting seat (1) via an eighth spring (31), a sewage collection box (32) is fixed to the strip plate (29), a resistance piece (321) is fixed to the sewage collection box (32), the resistance piece (321) is located at one end of the third resistance rod (27), a resistance wedge (33) is fixed to the lower end of the strip plate (29), and a resistance strip (34) that resists the resistance wedge (33) is fixed to the vertical rod (11).

8. The welding rotation auxiliary device for metal structural parts according to claim 7, wherein: A third resistance frame (35) is fixed on the resistance wedge (33), and a fourth resistance rod (36) is resisted on the third resistance frame (35). The fourth resistance rod (36) is elastically connected to the L-shaped bracket (19) through a ninth spring (37). A second seesaw (38) is rotatably connected to the L-shaped bracket (19), and a second torsion spring (39) is connected between the second seesaw (38) and the L-shaped bracket (19).

9. The welding rotation auxiliary device for metal structural parts according to claim 8, wherein: One end of the second rocker plate (38) abuts against a fifth abutment rod (40), the fifth abutment rod (40) being elastically connected to the L-shaped bracket (19) via a tenth spring (41), and a plurality of equally spaced arc-shaped abutment blocks (42) being fixed on the side surface of the wedge-shaped abutment strip (10).

10. The welding method of the metal structural member according to claim 9, wherein The specific steps include: Step 1: Loading of metal structural parts. Place the flange in the structural part body (4) on the placement seat (3) arranged above the mounting seat (1), then place the connecting pipe mouth on the flange, preliminarily align the apertures of the two workpieces, and when the piston rod of the servo electric cylinder (8) retracts, it drives the wedge-shaped contact strip (10) on the L-shaped connecting rod (9) to move horizontally and contact the lower end of the first contact rod (5), so that the first contact rod (5) drives the conical contact block (7) to move in the placement seat (3) and contact with a plurality of fixed components, so that the plurality of fixed components move horizontally on the placement seat (3), firmly press the flange on the placement seat (3), and at the same time firmly press the connecting pipe mouth on the flange, and automatically adjust the position of the structural part body (4) so ​​that the center of the flange and the center of the connecting pipe mouth are on the same straight line; Step 2, cleaning of the metal structural parts, the hollow shaft (2) is driven to rotate by the motor assembly, so that the placement seat (3) drives the structural part body (4) to rotate synchronously, and the piston rod of the servo electric cylinder (8) continues to move, so that the vertical rod (11) fixed on the L-shaped connecting rod (9) drives the cleaning bracket (13) slidably connected to the 匚-shaped block (12) to move horizontally, so that the cleaning block (14) fixed on the cleaning bracket (13) can be pressed against the structural part body (4) to perform all-round cleaning on the welding surface to reduce impurities. At this time, a plurality of second contact rods (17) fixed on the hollow shaft (2) can intermittently and continuously contact with the toggle rod (16), so that the cleaning block (14) can move back and forth horizontally during the cleaning process to improve the cleaning effect; Step 3: Welding of the metal structural part. The position of the welding equipment is then adjusted so that the welding gun is pressed against the rotating structural part body (4) for welding, so that the flange of the structural part body (4) and the connecting pipe mouth are welded together. At the same time, the cleaning block (14) cleans the weld surface again to remove impurities generated by welding, thereby improving the quality and reliability of the weld. Step 4: Blanking and self-cleaning. The piston rod of the servo electric cylinder (8) drives the wedge-shaped contact strip (10) to release the contact with the first contact rod (5). The fixing assembly resets and the motor assembly stops working. The welded structural part body (4) can be removed from the placement seat (3). At the same time, the cleaning block (14) moves into the cleaning seat (18) on the L-shaped bracket (19) and is rinsed through the flushing nozzle (30). The surface of the cleaning block (14) is scrubbed by the brush plate (23). At the same time, the strip plate (29) drives the sewage collection box (32) to automatically move under the cleaning seat (18) to collect sewage. When the strip plate (29) moves, it can realize the linkage between the third contact frame (35) and the fourth contact rod (36), the second toggle plate (38) and the fifth contact rod (40), so as to achieve the purpose of intermittently and continuously contacting a number of arc-shaped contact blocks (42) on the wedge-shaped contact strip (10) by the fifth contact rod (40), and promote the L-shaped bracket (19) to drive the cleaning seat (18) to move back and forth, improving the self-cleaning effect of the cleaning block (14). At the same time, when the cleaning seat (18) moves, the third contact rod (27) can contact the contact piece (321) fixed on the sewage collection box (32), making the C-shaped contact frame (25) contact the two contact heads (22), driving the two brush plates (23) to move relatively to squeeze the water in the cleaning block (14).

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