CN111906418B

CN111906418B - Automatic welding device and welding method for exterior of sugar-making evaporation tank

Info

Publication number: CN111906418B
Application number: CN202010882590.0A
Authority: CN
Inventors: 黄孙民; 黄增; 李利元; 韦振宇; 陆官明; 韦举东; 潘泽蝉
Original assignee: Guangxi Construction Engineering Group First Installation Engineering Co ltd
Current assignee: Guangxi Construction Engineering Group First Installation Engineering Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2024-02-13
Anticipated expiration: 2040-08-28
Also published as: CN111906418A

Abstract

The invention discloses an automatic welding device and a welding method for the exterior of a sugar-making evaporation tank, wherein the welding device comprises a gantry upright post frame fixedly arranged between two parallel first guide rails, two sides of the bottom end of the gantry upright post frame are fixed on the first guide rails through first sliding seats, two second guide rails parallel to the first guide rails are arranged in a foundation between the two parallel first guide rails, a plurality of pairs of support assemblies for supporting evaporation tank workpieces are arranged on the two parallel second guide rails, a welding support platform is horizontally arranged below the top end of the gantry upright post frame, a square hole is hollowed out in the center of the welding support platform, a pair of submerged arc welding assemblies extending downwards are arranged in the square hole, and lifting driving motors are arranged on two sides of the top end of the gantry upright post frame. The welding method can ensure the welding precision of the horizontal height, the transverse straightness and the longitudinal straightness of the evaporation tank workpiece, and reduce the adjustment work of the evaporation tank workpiece.

Description

Automatic welding device and welding method for exterior of sugar-making evaporation tank

Technical Field

The invention relates to the technical field of sugarcane sugar production equipment, in particular to an automatic welding device and a welding method for the exterior of a sugar production evaporation tank.

Background

The evaporation tank is the most widely used heat exchange device in sugar factories, and mainly comprises a juice catcher, a juice steam chamber, a heating body, a bottom cover and other auxiliary elements, and has the advantages of large evaporation area, firm structure, large size, large caliber and high heat exchange efficiency; therefore, the welding production quality of the evaporating pot directly influences the quality and safety of evaporation, and the longitudinal girth weld inside the existing sugar evaporating pot is welded by adopting manual welding and semi-automatic welding equipment, so that the welding quality is unstable, the labor intensity of workers is high, and the production efficiency is low. The requirements on large equipment for welding the evaporating pot are high, the existing welding equipment is complex in structure and high in price, the existing welding equipment is mainly a trolley type submerged arc welding machine, the welding adaptability is poor, in the welding process of the evaporating pot, the welding work piece of the sugar evaporating pot is difficult to move, the moving welding equipment is inconvenient, the welding machine head is not easy to adjust, and the universality is poor.

Disclosure of Invention

The invention aims to provide an automatic welding device and a welding method for the exterior of a sugar-making evaporation tank, which can ensure the welding precision of the horizontal height, the transverse straightness and the longitudinal straightness of an evaporation tank workpiece, reduce the adjustment work of the evaporation tank workpiece, are convenient to operate, and can accurately control the position of a welding support platform, thereby effectively adjusting the proper position of a submerged arc welding gun. In order to achieve the above purpose, the present invention adopts the following technical effects:

According to one aspect of the invention, there is provided an external automatic welding device for a sugar-making evaporation tank, the external automatic welding device comprises two parallel first guide rails arranged in a foundation, a gantry upright frame fixedly arranged between the two parallel first guide rails, two sides of the bottom end of the gantry upright frame are fixed on the first guide rails through first sliding seats, two second guide rails parallel to the first guide rails are arranged in the foundation between the two parallel first guide rails, a plurality of pairs of supporting components for supporting the evaporation tank workpiece are arranged on the two parallel second guide rails, the supporting components are fixed on the second guide rails through second sliding seats, a welding supporting platform is horizontally arranged below the top end of the gantry upright frame, the side walls of the welding supporting platform are connected on two side walls of the gantry upright frame through sliding supporting blocks arranged along the vertical direction, square holes are hollowed out in the centers of the welding supporting platform, a pair of submerged arc welding components extending downwards are arranged in the square holes, lifting driving motors are arranged on two sides of the top end of the gantry upright frame, and the lifting driving motors are connected with the driving chains through the sliding supporting blocks.

The above scheme is further preferred, the supporting component includes first fixing base, sliding support seat, supporting roller and transversely fixes many horizontal supporting beams between two parallel second guide rails, and this horizontal supporting beam is the bar-shaped cell body form, the both ends of horizontal supporting beam pass through the second sliding seat respectively and fix on the second guide rail, be provided with first sliding driving motor on the outer wall of one side of horizontal supporting beam, be provided with first bearing frame on the outer wall of the opposite side of horizontal supporting beam, be provided with screw nut respectively inside the both ends of horizontal supporting beam, be connected with the lead screw on the output shaft of first sliding driving motor, the one end of this lead screw with the output shaft transmission of first sliding driving motor is connected, the other end of lead screw passes in proper order behind the screw nut cover in the both ends of horizontal supporting beam and is established in the first bearing frame, set up respectively at the both ends on horizontal supporting beam sliding support seat, the edge of this sliding support seat with horizontal supporting beam edge sliding contact, the bottom center of sliding support seat is fixed on screw nut makes the sliding support seat pull at horizontal supporting beam, the sliding support passes through first fixing base.

In the above scheme, it is further preferable that a supporting rotation motor is fixed on the outer side wall of the first fixing seat, and the supporting rotation motor is in transmission connection with the supporting roller.

In the above scheme, it is further preferable that a displacement detection switch is provided on a side wall of the screw nut.

The above scheme is further preferred, submerged arc welding subassembly includes interlock upper roller and lower gyro wheel and the vertical support of articulating the upper and lower marginal surface in square hole in welding supporting platform, the horizontal fixed bolster of horizontal fixing on vertical support, the submerged arc welding device of fixing in horizontal fixed bolster below, fix respectively at the double wire reel of vertical support and horizontal fixed bolster top, be provided with the roll driving motor in the upper roller lateral part, the output shaft of roll driving motor respectively with upper roller and lower gyro wheel transmission are connected, are provided with the soldering tin on the positive rear side of submerged arc welding device the top lateral part of vertical support is provided with flux and retrieves the conveyer, is provided with vibration filter vat in the bottom export of flux retrieving the conveyer, vibration filter vat's exit end through conveying pipe with submerged arc welding device intercommunication is provided with the recovery entry on the top of retrieving the conveyer, retrieve the entry through the conveyer pipe with the soldering tin retrieves the intercommunication, be provided with the rotation support beam 806 in the lateral wall of the vertical support who is close to upper roller one side the support beam on the terminal be provided with the solder control box respectively with the welding control box with electric welding control box and electric drive device.

The submerged arc welding device comprises a second fixing seat, a T-shaped horizontal sliding block, a T-shaped vertical sliding block, a horizontal sliding driving motor, a vertical sliding driving motor, a rotary supporting seat and a pair of welding fixing heads, wherein a submerged arc welding gun is fixed on the welding fixing heads, the second fixing seat is fixed below the horizontal fixing support, a horizontal sliding channel is formed in the second fixing seat, the sliding end part of the T-shaped horizontal sliding block is in sliding buckling connection in the horizontal sliding channel, the horizontal sliding driving motor is arranged on the side wall of the second fixing seat, an output shaft of the horizontal sliding driving motor is in transmission connection with the sliding end part of the T-shaped horizontal sliding block, a vertical sliding channel is arranged at the bottom of the T-shaped horizontal sliding block, the sliding end part of the T-shaped vertical sliding block is in sliding buckling connection in the vertical sliding channel, the output shaft of the vertical sliding driving motor is in transmission connection with the sliding end part of the T-shaped vertical sliding block, the rotary supporting seat is fixed at the bottom of the T-shaped vertical sliding block, and a rotary shaft extending out of the rotary supporting seat is arranged on the rotary shaft which is symmetrically arranged on the welding head.

The welding fixture further preferably comprises a groove-shaped fixing seat fixed on the end part of the rotating shaft and a pair of welding wire tightness adjusting devices fixed right in front of the groove-shaped fixing seat, wherein two ends in the groove-shaped fixing seat are provided with linear guide rails which are centrosymmetric, at least two linear bearings are arranged on the linear guide rails in a sliding mode, a fixed supporting seat is arranged on the linear bearings, a linear motor is fixed on the groove-shaped fixing seat, an output shaft of the linear motor is in transmission connection with the fixed supporting seat, a supporting disc is fixed on the front side wall of the fixed supporting seat, the supporting disc is in meshed transmission connection with the fixed supporting seat through a vertically arranged worm, a rotatable rotating disc is embedded in the center of the supporting disc, a rotating seat is fixed on the outer wall of the rotating disc, a rotating indication strip is arranged on the outer peripheral side wall of the rotating seat, an arc scale mark is arranged on the disc surface of the supporting disc, a locking handle rod for fixing the rotating disc is arranged on the disc surface of the supporting disc, one end of the locking handle rod is in threaded connection with the disc surface of the supporting disc, the inner edge of the rotating seat is vertically connected with the welding wire tightness adjusting device, and the welding wire is fixedly connected with the welding wire tightness adjusting device on the welding gun.

The welding wire tightness adjusting device comprises a tightness supporting plate fixed on the inner side wall of the supporting plate and a guide driving motor fixed on the outer side wall of the supporting plate, wherein a guide driving gear and a guide driven wheel are respectively fixed on the tightness supporting plate from top to bottom, the guide driving gear is fixed on the supporting plate through a second bearing seat, the guide driving gear is sleeved on the second bearing seat, the second bearing seat and the guide driving gear are fixedly sleeved on the upper end side wall of the tightness supporting plate in a sliding manner along the vertical direction through a first central sliding shaft, an output shaft of the guide driving motor penetrates through the second bearing seat to be sleeved with the guide driving gear, the guide driven wheel is fixedly sleeved on the lower end side wall of the tightness supporting plate in a sliding manner along the vertical direction through a second central sliding shaft, a first locking wheel and a first installation shell are arranged in front of the guide driving gear, the upper end of the first installation shell is fixedly arranged on the top side wall of the tightness supporting plate through a first rotating pin shaft, the first locking wheel is fixedly arranged on the lower end inner wall of the first installation shell through a first central shaft, and the first locking nut is arranged in front of the first installation shell for rotating and is connected with the first locking nut; a second locking wheel and a second installation shell are arranged in front of the position between the guide driving gear and the guide driven wheel, the lower end side wall of the second installation shell is fixed on the lower end inner side wall of the elastic supporting plate through a second rotating pin shaft, the second locking wheel is fixed on the upper end inner side wall of the second installation shell through a second central shaft, a second locking nut for driving the second installation shell to rotate is arranged in front of the upper end front side wall of the second installation shell, and the second locking nut is connected on the lower end front side wall of the elastic supporting plate through a second L-shaped rotating rod; the welding tracking device is characterized in that a clamping part is fixed on the lower end part of the elastic supporting plate, the submerged arc welding gun is vertically clamped on the clamping part, the submerged arc welding gun is connected to the clamping part through a plurality of sections of submerged arc channel pipes which are connected in series, the welding tracking device is vertically fixed right in front of the submerged arc welding gun, and the soldering tin recovery suction nozzle is vertically arranged right behind the submerged arc welding gun through a connecting part between the rotating seat and the supporting plate.

According to another aspect of the present invention, there is provided a welding method of an automatic welding device for an exterior of a sugar-making evaporation tank, comprising a step of controlling walking of a gantry pillar frame, a step of adjusting and controlling a welding support platform horizontally disposed below a top end of the gantry pillar frame, a step of adjusting and controlling a support member disposed between inner sides along a lower end of the gantry pillar frame, a step of adjusting and controlling a submerged arc welding member 8 on the welding support platform, and a step of recovering a welding agent through a solder recovery nozzle by a flux recovery conveyor; the specific welding steps are as follows: the inner sides of the lower ends of the gantry upright frames are provided with supporting components for supporting the evaporation tank workpieces through two parallel second guide rails, and the relative spacing of the supporting components is adjusted to be suitable for placing the diameter of the evaporation tank workpieces; the side walls of the welding support platforms are connected to the side walls of the two sides of the gantry upright post frame through sliding support blocks which are arranged in a sliding manner along the vertical direction, and the submerged arc welding assemblies are positioned at proper relative welding positions by adjusting the heights of the welding support platforms, so that the outer walls of the evaporation tank workpieces are positioned at different heights; the welding tracker is used for acquiring the welding seam position of the evaporation tank workpiece, and the welding control box outputs a control signal to adjust the height position and the horizontal position of the submerged arc welding device so as to adjust the submerged arc welding device to be at a proper relative welding position height, so that the submerged arc welding gun is aligned with the welding seam of the evaporation tank workpiece, and the outer wall of the evaporation tank workpiece is welded relative to the vertical height direction; the upper roller and the lower roller in the submerged arc welding assembly are regulated to be meshed with the upper edge surface and the lower edge surface of the square hole in the connecting support platform to roll, so that the submerged arc welding assembly is regulated to be positioned at a proper horizontal position to weld the horizontal position of the outer wall of the evaporation tank workpiece; the welding machine is characterized in that the welding machine is horizontally walked through the gantry upright post frame and is vertically matched with the supporting platform in a sliding manner, the submerged arc welding assembly is driven to move, the evaporating pot workpiece is controlled to rotate through the supporting assembly to weld, the welding tracker moves forwards along the welding seam position in the rotating process of the evaporating pot workpiece, the submerged arc welding gun is aligned to the welding seam position of the evaporating pot workpiece to weld, the welding flux is continuously conveyed to the submerged arc welding gun by the flux recycling conveyor, meanwhile, the flux recycling conveyor is started to recycle scattered flux in the welding process through the soldering flux recycling suction nozzle, and after welding is completed, all operation parts of the submerged arc welding assembly are stopped by the welding control box.

In the scheme, the welding method further comprises the step of enabling the submerged arc welding gun to be aligned with the welding line angle of the evaporation tank workpiece along the vertical direction by adjusting the angle of the submerged arc welding device along the vertical direction.

In summary, the utility model adopts the technical scheme, and has the following technical effects:

(1) The automatic welding device can ensure the welding precision of the horizontal height, the horizontal straightness and the longitudinal straightness of the evaporation tank workpiece, reduces the adjustment work of the evaporation tank workpiece, namely improves the welding efficiency of the evaporation tank workpiece; the utility model can collect and convey the welding flux to the welding flux recycling conveyor in time for recycling, and improves the utilization rate of the welding flux;

(2) The welding gun is adjusted to be stepless in the vertical and horizontal directions, is convenient to operate, can accurately control the position of the welding support platform, and is matched with adjusting the rotation speed of a proper guide driving gear, so that the proper position of the submerged arc welding gun is adjusted, and the welding efficiency and quality are reliably ensured;

(3) The utility model can track the welding line by utilizing infrared rays or laser and lead the welding gun to be aligned with the welding line for tracking welding, thereby improving the welding accuracy and reducing the labor cost; the welding device has the characteristics of good operation stability, time and labor saving, high welding efficiency and good use effect, reduces the deformation phenomenon of the profile steel caused by turning of the workpiece of the evaporation tank, and improves the welding quality.

Drawings

FIG. 1 is a schematic diagram of an automatic welding device outside a sugar-making evaporation tank;

FIG. 2 is a schematic top view of an automatic welding device outside a sugar-making evaporation tank;

FIG. 3 is a schematic view of the overall structure of the support assembly of the present utility model;

FIG. 4 is a schematic view of an adjustment mounting structure of the support assembly of the present utility model;

FIG. 5 is a schematic view of a support roller mounting adjustment structure of the present utility model;

FIG. 6 is a schematic view of the overall construction of the submerged arc welding assembly of the present utility model;

FIG. 7 is a schematic view of the mounting structure of the welding control cartridge of the present utility model;

FIG. 8 is a schematic view of the installation control structure of the submerged arc welding apparatus of the present utility model;

FIG. 9 is a schematic top view of the submerged arc welding assembly of the present utility model;

FIG. 10 is a schematic side view of a submerged arc welding assembly of the present utility model

FIG. 11 is a perspective view of a weld fixture head and wire slack adjuster of the present invention;

FIG. 12 is a schematic view of the positional relationship of the locking wheel of the present invention;

FIG. 13 is a schematic view of the structural relationship of the support plate of the present invention;

in the drawing, a first guide rail 1, a gantry column frame 2, a second guide rail 4, a first slide holder 3, a support assembly 5, a welding support platform 6, a square hole 7, a submerged arc welding assembly 8, a solder recovery nozzle 9, a submerged arc welding gun 10, a welding tracker 11, a lifting drive motor 20, a transmission chain 21, a first travel drive motor 30, a second slide holder 40, an evaporation tank workpiece 50, a slide support block 60, a welding wire 100, a first fixing base 500, a slide support holder 501, a support roller 502, a horizontal support beam 503, a first slide drive motor 504, a first bearing block 505, a screw nut 506, a screw 507, a support rotation motor 508, a displacement detection switch 509, an upper roller 800, a rolling drive motor 800a, a lower roller 801, a vertical bracket 802, a horizontal fixing bracket 803, a submerged arc welding device 804, a twin wire tray 805, a rotation support beam 806, a welding control box 807, a welding fixing head 808, welding wire tension adjusting device 809, flux recycling conveyor 8020, recycling inlet 8020a, vibration filter tub 8021, second fixing base 8040, t-shaped horizontal sliding block 8041, t-shaped vertical sliding block 8042, horizontal sliding driving motor 8043, vertical sliding driving motor 8044, rotation support base 8045, rotation shaft 8046, horizontal sliding passage 8040a, vertical sliding passage 8041a, groove-shaped fixing base 8080, linear guide rail 8081, linear bearing 8082, fixing support base 8083, worm 8083a, linear motor 8084, support plate 8085, rotation plate 8085a, circular arc scale mark 8085b, locking handle bar 8085c, rotation base 8086, support plate 8087, tension support plate 8090, guide driving motor 8091, guide driving gear 8092, guide driven wheel 8093, second bearing base 8092a, first center sliding shaft 8092b, second center sliding shaft 8093a, first locking wheel 8094, first mounting housing 8094a, first rotation pin 8094b, the first center shaft 8094c, the first lock nut 8094d, the first L-shaped rotating rod 8094e, the second lock wheel 8095, the second mounting housing 8095a, the second rotating pin 8095b, the second center shaft 8095c, the second lock nut 8095d, and the second L-shaped rotating rod 8095e.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and by illustrating preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the invention, and that these aspects of the invention may be practiced without these specific details.

Referring to fig. 1 and 2, the external automatic welding device for sugar-making evaporation cans according to the present invention comprises two parallel first guide rails 1 disposed in a foundation, a gantry upright frame 2 fixedly installed between the two parallel first guide rails 1, two sides of the bottom end of the gantry upright frame 2 fixed on the first guide rails 1 through a first sliding seat 3, two second guide rails 4 parallel to the first guide rails 1 disposed in the foundation between the two parallel first guide rails 1, a plurality of pairs of support assemblies 5 for supporting the evaporation can workpieces 50 disposed on the two parallel second guide rails 4, each pair of support assemblies 5 symmetrically installed along the second guide rails 4 such that the evaporation can workpieces 50 are disposed on the support assemblies 5 along the extending direction of the second guide rails 4, the outer wall of the evaporation tank workpiece 50 is regulated to be welded at different positions through the supporting component 5, the supporting component 5 is fixed on the second guide rail 4 through the second sliding seat 40, a welding supporting platform 6 is horizontally arranged below the top end of the gantry upright frame 2, the side walls of the welding supporting platform 6 are connected to the side walls of the two sides of the gantry upright frame 2 through sliding supporting blocks 60 which are arranged in a sliding manner along the vertical direction, a square hole 7 is hollowed out in the center of the welding supporting platform 6, a pair of submerged arc welding components 8 which extend downwards are arranged in the square hole 7, when the gantry upright frame 2 is installed on the two parallel first guide rails 1, the bottom end of the gantry upright frame 2 is in sliding connection with the first guide rails 1 through the first sliding seat 3, the first sliding seat 3 is in transmission contact with the first guide rails 1 through a first walking driving motor 30, when the first traveling driving motor 30 drives the first sliding seat 3 to slide on the first guide rail 1, the gantry upright frame 2 is driven to slide horizontally on the first guide rail 1, so that the submerged arc welding assembly 8 is welded along the length direction (horizontal position) of the evaporation tank workpiece 50, lifting driving motors 20 are arranged on two sides of the top end of the gantry upright frame 2, the lifting driving motors 20 are in transmission connection with the sliding supporting blocks 60 through transmission chains 21, when the lifting driving motors 20 drive the sliding supporting blocks 60 to slide up and down along two sides of the top end of the gantry upright frame 2 through the transmission chains 21, the sliding supporting blocks 60 are driven to slide up and down along two sides of the top end of the gantry upright frame 2, and the height of the sliding supporting blocks 60 is adjusted, so that the submerged arc welding assembly 8 is positioned at a proper relative welding position height through adjusting the height of the welding supporting platform 6, and the outer wall of the evaporation tank workpiece 50 is welded at different height positions through the gantry operating frame structure, and the longitudinal movement or vertical movement of the submerged arc welding assembly 8 is achieved, and the welding of the workpiece with the diameter of 1200-5500 mm, the single-length and 2500mm or the outer seam of the welding seam is formed; the outer circumferential seam welding is realized by rotating the evaporation tank workpiece 50 by the support rollers. The two gantry welding operators share the rail, and the rail length is 40 meters. Wherein: the double-wire double-arc submerged arc welding system (a pair of submerged arc welding assemblies 8) is matched with the gantry type operation frame, that is, the supporting assembly 5 moves along the second guide rail 4 to realize longitudinal seam or circumferential seam welding outside the carbon steel or stainless steel evaporation tank workpiece 50 (workpiece cylinder) with the diameter of 1200 mm-5500 mm, the length of the single-section evaporation tank workpiece 50 (workpiece cylinder) is 1500 mm-2500 mm, the supporting roller of the supporting assembly 5 is adjustable, the center distance of the supporting roller is changed, and the operation requirements of workpieces with different diameters are met.

In the invention, as shown in fig. 1, 3, 4 and 5, the supporting component 5 comprises a first fixed seat 500, a sliding supporting seat 501, a supporting roller 502 and a plurality of horizontal supporting beams 503 transversely and horizontally fixed between two parallel second guide rails 4, the horizontal supporting beams 503 are in the shape of a strip-shaped groove, two ends of the horizontal supporting beams 503 are respectively fixed on the second guide rails 4 through the second sliding seat 40, a second walking driving motor 41 is arranged at the inner side of the second sliding seat 40, the second walking driving motor 41 drives the horizontal supporting beams 503 through the second sliding seat 40 on the second guide rails 4, so that the evaporating pot workpiece 5 moves back and forth along the extending direction of the second guide rails 4, a first sliding driving motor 504 is arranged on the outer wall of one side of the horizontal supporting beams 503, a first bearing seat 505 is arranged on the outer wall of the other side of the horizontal supporting beams 503, screw nuts 506 are respectively arranged at two ends of the horizontal supporting beams 503, a screw rod 507 is connected to the output shaft of the first sliding driving motor 504, one end of the screw 507 is connected with the first output shaft 504, the screw nuts 506 are respectively arranged at the two ends of the first bearing seat 506, the screw nuts 506 are respectively connected with the two ends of the horizontal supporting beams 501, the two ends of the horizontal supporting beams 501 are respectively arranged at the two ends of the horizontal supporting beams 501 in the sliding seat 501, the horizontal supporting frames are respectively, the two ends of the horizontal supporting beams 501 are respectively contacted with the two ends of the horizontal supporting beams 501, the horizontal supporting nuts 501, the two ends of the horizontal supporting frames are respectively, the two ends of the horizontal supporting nuts 501 are respectively arranged at the upper and the two ends of the horizontal supporting nuts 501, and the horizontal supporting the upper and the upper supporting nuts and the upper and the nuts are respectively, and the two nuts are respectively and the upper and the two nuts are respectively and the upper and lower nuts are respectively and fixed, a supporting rotation motor 508 is fixed on the outer side wall of the first fixing seat 500, the supporting rotation motor 508 is in transmission connection with the supporting roller 502, when the supporting rotation motor 508 arranged on the first fixing seat 500 at two ends of the horizontal supporting beam 503 rotates, the supporting roller 502 is driven to rotate, so as to drive the evaporation tank workpiece 50 to roll, so that the evaporation tank workpiece 50 is welded at different positions on the side wall, the evaporation tank workpiece 50 is greatly convenient to move and turn, when the evaporation tank workpiece 50 with different diameters is welded, the first sliding driving motor 504 is started to rotate forward, the screw 507 is driven to rotate forward, and because the screw nuts 506 at two ends of the screw 507 are provided with fixed sliding supporting seats 501 through the screw nuts 506, the screw nuts 506 at two ends of the screw 507 slide along the center of the screw 507, the supporting roller 502 on the sliding supporting seat 501 is driven to slide towards the center of the screw 507, thereby adjusting the distance between the two supporting rollers 502 on the horizontal supporting beam 503, and reducing the distance between the two supporting rollers 502 on the horizontal supporting beam 503; when the first sliding driving motor 504 rotates reversely, the lead screw nut 506 moves away from the center of the lead screw 507 and slides towards the two ends of the horizontal supporting beam 503, and the lead screw nut 506 drives the sliding supporting seat 501, the first fixing seat 500 and the supporting roller 502 to slide, so that the distance between the supporting rollers 502 at the two ends of the horizontal supporting beam 503 is increased, a displacement detection switch 509 is arranged on the side wall of the lead screw nut 506, the displacement detection switch 509 detects a certain distance in the sliding process of the lead screw nut 506 towards the center of the lead screw 507, and a control signal is output after the lead screw nut 506 slides to a specified position, so that the first sliding driving motor 504 stops rotating, and the position of the lead screw nut 506 driving the supporting rollers 502 to move is controlled better, so that the welding operation of the evaporation tank workpieces 50 with different diameters is adapted.

In the invention, as shown in fig. 1, 2 and 6, the submerged arc welding assembly 8 comprises an upper roller 800 and a lower roller 801 which are engaged with the upper edge surface and the lower edge surface of a square hole 7 in a welding supporting platform 6, a vertical bracket 802 which is hung between the upper roller 800 and the lower roller 801, a horizontal fixing bracket 803 which is horizontally fixed on the vertical bracket 802, a submerged arc welding device 804 which is fixed below the horizontal fixing bracket 803, and a double wire reel 805 which is respectively fixed above the vertical bracket 802 and above the horizontal fixing bracket 803, wherein the double wire reels 805 with different sizes are respectively arranged on each supporting frame for conveying welding wires for the respective submerged arc welding assembly 8, a rolling driving motor 800a is arranged at the side part of the upper roller 800, an output shaft of the rolling driving motor 800a is respectively connected with the upper roller 800 and the lower roller 801 in a transmission way, and when the rolling driving motor 800a is started to rotate, the upper roller 800 and the lower roller 801 are driven to rotate along the upper edge surface and the lower edge surface of the square hole 7 in the welding support platform 6, the submerged arc welding device 804 is driven to move on the welding support platform 6, a solder recovery suction nozzle 9 is arranged on the right rear side of the submerged arc welding device 804, a solder recovery conveyor 8020 is arranged on the side part of the top end of the vertical support 802, a vibration filter drum 8021 is arranged at the bottom end outlet of the solder recovery conveyor 8020, the outlet end of the vibration filter drum 8021 is communicated with the submerged arc welding device 804 through a conveying pipe, the solder stored in the solder recovery conveyor 8020 continuously falls to the bottom of the drum after being filtered by the vibration filter drum 8021, then is conveyed to the submerged arc welding device 804 through the conveying pipe for welding, a recovery inlet 8020a is arranged at the top end of the solder recovery suction nozzle 9 and is communicated with the solder recovery suction nozzle 8020 through a conveying pipe, the solder recovery nozzle 9 sucks scattered flux in the soldering process and sends the flux to the flux recovery conveyor 8020 for recycling, a rotary supporting beam 806 is arranged on the outer side wall of the vertical support 802 close to one side of the upper roller 800, as shown in fig. 7, the rotary supporting beam 806 is a multi-section rotary supporting beam, a welding control box 807 is arranged at the tail end of the rotary supporting beam 806, the welding control box 807 is respectively electrically connected with the rolling driving motor 800a and the submerged arc welding device 804, two manual control boards 807a are arranged on the rotary supporting beam 806 below the welding control box 807, the manual control boards 807a are electrically connected with the welding control box 807, the positions of the welding control box 807 and the manual control boards 807a are adjusted through manual operation control of the welding control box 807 and the manual control boards 807a, and the gantry column frame 2 is controlled to walk, the supporting component 5 is controlled to rotate and walk, and the welding operation of the welding support platform 6 is controlled to slide up and down and the submerged arc welding component 8 is controlled through the manual control boards 807 a.

In the invention, as shown in fig. 1, 6 and 8, the submerged arc welding device 804 comprises a second fixing seat 8040, a T-shaped horizontal sliding block 8041, a T-shaped vertical sliding block 8042, a horizontal sliding driving motor 8043, a vertical sliding driving motor 8044, a rotating support seat 8045 and a pair of welding fixing heads 808, wherein the submerged arc welding gun 10 is fixed on the welding fixing heads 808, the second fixing seat 8040 is fixed below the horizontal fixing support 803, a horizontal sliding channel 8040a is arranged in the second fixing seat 8040, the sliding end part of the T-shaped horizontal sliding block 8041 is in sliding buckling connection in the horizontal sliding channel 8040a, the horizontal sliding driving motor 8043 is arranged on the side wall of the second fixing seat 8040, the output shaft of the horizontal sliding driving motor 8043 is in transmission connection with the sliding end part of the T-shaped horizontal sliding block 8041, a vertical sliding channel 8041a is arranged at the bottom of the T-shaped horizontal sliding block 8041, the sliding end of the T-shaped vertical sliding block 8042 is in sliding and buckling connection in the vertical sliding channel 8041a, the side wall of the T-shaped vertical sliding block 8042 is provided with the vertical sliding driving motor 8044, the output shaft of the vertical sliding driving motor 8044 is in transmission connection with the sliding end of the T-shaped vertical sliding block 8042, the bottom of the T-shaped vertical sliding block 8042 is fixedly provided with the rotating support seat 8045, the rotating support seat 8045 is provided with an outwards extending rotating shaft 8046, a pair of welding fixing heads 808 are symmetrically fixed on the end of the rotating shaft 8046, the rotating shaft 8046 can be manually pushed to rotate along the horizontal direction, the horizontal positions of the welding fixing heads 808 and the submerged arc welding gun 10 are regulated by pushing the rotating shaft 8046, the horizontal sliding driving motor 8043 and the vertical sliding driving motor 8044 are respectively under the control of a welding control box 807, the welding control box 807 outputs a control command to enable the horizontal sliding driving motor 8043 to start and drive the T-shaped horizontal sliding block 8041 to slide in the horizontal sliding channel 8040a along the horizontal direction, and to drive the T-shaped vertical sliding block 8042 to slide in the vertical sliding channel 8041a along the vertical direction, so as to finely adjust the horizontal position and the vertical height position of the welding fixture head 808, and achieve the purpose of adjusting the position of the submerged arc welding gun 10.

In the invention, as shown in fig. 1, 6, 8 and 9, the welding fixing head 808 comprises a groove-shaped fixing seat 8080 fixed on the end part of the rotating shaft 8046 and a pair of welding wire tightness adjusting devices 809 fixed right in front of the groove-shaped fixing seat 8080, linear guide rails 8081 with central symmetry are arranged at two ends in the groove-shaped fixing seat 8080, at least two linear bearings 8082 are arranged on the linear guide rails 8081 in a sliding manner, a fixed supporting seat 8083 is arranged on the linear bearings 8082, a linear motor 8084 is fixed on the groove-shaped fixing seat 8080, an output shaft of the linear motor 8084 is in transmission connection with the fixed supporting seat 8083, the linear bearings 8082 are connected through the fixed supporting seat 8083, the linear motor 8084 drives the fixed supporting seat 8083 to enable the linear bearings 8082 to slide left and right on the linear guide rails 8081, thereby driving the welding wire tightness adjusting devices 809 to slide left and right, in order to achieve the purpose of adjusting the position of the submerged arc welding gun 10, a support disk 8085 is fixed on the front side wall of a fixed support seat 8083, the support disk 8085 and the fixed support seat 8083 are in meshed transmission connection through a vertically arranged worm 8083a, when the worm 8083a is screwed to rotate, the relative position height of the support disk 8085 on the fixed support seat 8083 is adjusted so as to achieve the purposes of fine adjustment of the welding wire tightness adjusting device 809 and adjustment of the height of the submerged arc welding gun 10, a rotatable rotating disk 8085a is embedded in the center of the support disk 8085, a rotating seat 8086 is fixed on the outer wall of the rotating disk 8085a, a rotating indication strip 8086a is arranged on the outer peripheral side wall of the rotating seat 8086, an arc scale mark 8085b is arranged on the disk surface of the support disk 8085 right in front of the rotating indication strip 8086a, and a locking handle 8085c for fixing the rotating disk 8085a is arranged on the disk surface of the support disk 8085, the one end screw thread connection of this locking barre 8085c is in the quotation of supporting disk 8085 the internal edge surface of rotating seat 8086 and perpendicular outside fixedly connected with backup pad 8087, in the junction vertical setting between rotating seat 8086 and the backup pad 8087 soldering tin recovery suction nozzle 9 the fixed welding wire tightness adjusting device on the inside wall of backup pad 8087, fixed on welding wire tightness adjusting device submerged arc welder 10, when rotating disk 8085a slides in supporting disk 8085 and rotates, instruct the position at circular arc scale mark 8085b through rotating indicator 8086a to know the angle that rotating disk 8085a rotated, adjust rotating disk 8085a and rotate to certain angle after, lock fixed rotating disk 8085a in supporting disk 7509 through locking barre 8085c, drive when rotating disk 8085a rotating seat 8086 rotates, make soldering tin recovery suction nozzle 9, welding wire tightness adjusting device and submerged arc welder 10 on the backup pad 8087 also rotate thereupon, adjusts soldering tin recovery suction nozzle 9 and submerged arc welder 10's angle.

In the present invention, as shown in fig. 1, 8, 9, 10, 11 and 12, the welding wire tension adjusting device 809 comprises a tension support plate 8090 fixed on the inner side wall of the support plate 8087 and a guide driving motor 8091 fixed on the outer side wall of the support plate 8087, a guide driving gear 8092 and a guide driven wheel 8093 are respectively fixed on the tension support plate 8090 from top to bottom, the guide driving gear 8092 is fixed on the support plate 8087 through a second bearing seat 8092a, the guide driving gear 8092 is sleeved on a second bearing seat 8092a, the second bearing seat 8092a and the guide driving gear 8092 are fixed on the upper end side wall of the tension support plate 8090 through a first central sliding shaft 8092b in a sliding manner along the vertical direction, the position height of the guide driving gear 8092 can be adjusted by sliding the first central sliding shaft 8092b on the tension support plate 8090, the output shaft of the guide driving motor 8091 passes through a second bearing 8092a to be sleeved with the guide driving gear 8092, the guide driven wheel 8093 is fixed on the side wall of the lower end of the elastic support plate 8090 in a sliding manner through a second central sliding shaft 8093a along the vertical direction, the position height of the guide driven wheel 8093 is adjusted by sliding the second central sliding shaft 8093a on the elastic support plate 8090, the vertical positions of the guide driving gear 8092, the guide driven wheel 8093, a first locking wheel 8094 and a second locking wheel 8095 are finely adjusted, a first locking wheel 8094 and a first mounting shell 8094a are arranged in front of the guide driving gear 8092, the upper end of the first mounting shell 8094a is fixed on the side wall of the top end of the elastic support plate 8090 through a first rotating pin 8094b, the first locking wheel 8094 is fixed on the inner wall of the lower end of the first mounting shell 8094a through a first central shaft 8094c, a first locking nut 8094d for driving the first mounting housing 8094a to rotate is arranged in front of the outer side wall of the lower end of the first mounting housing 8094a, and the first locking nut 8094d is connected to the front side wall of the top end of the elastic support plate 8090 through a first L-shaped rotating rod 8094 e; a second locking wheel 8095 and a second mounting shell 8095a are arranged in front of the guide driving gear 8092 and the guide driven wheel 8093, the lower end side wall of the second mounting shell 8095a is fixed on the lower end inner side wall of the elastic supporting plate 8090 through a second rotating pin 8095b, the second locking wheel 8095 is fixed on the upper end inner side wall of the second mounting shell 8095a through a second central shaft 8095c, a second locking nut 8095d for driving the second mounting shell 8095a to rotate is arranged in front of the upper end front side wall of the second mounting shell 8095a, and the second locking nut 8095d is connected on the bottom end front side wall of the elastic supporting plate 8090 through a second L-shaped rotating rod 8095 e; a clamping part 8010 is fixed on the lower end part of the elastic support plate 8090, the submerged arc welding gun 10 is vertically clamped on the clamping part 8010, the submerged arc welding gun 10 is connected on the clamping part 8010 through a plurality of sections of submerged arc channel pipes which are connected in series, a welding tracker 11 is vertically fixed right in front of the submerged arc welding gun 10, the welding tracker 11 is an infrared light tracker, a laser tracker or an infrared graph tracker (the invention preferably adopts a laser welding seam tracker), the solder recovery suction nozzle 9 is vertically arranged right behind the submerged arc welding gun 10 through the joint between the rotating seat 8086 and the support plate 8087, and after the angle of the solder recovery suction nozzle 9 and the submerged arc welding gun 10 which are clamped and fixed on the support plate 8087 is adjusted along the vertical direction, the infrared light or laser emitted by the welding tracker 11 is aligned with a welding seam on an evaporation tank; after the angles of the solder recovery nozzle 9 and the submerged arc welding gun 10 in the vertical direction are adjusted, the first L-shaped rotating rod 8094e is rotated to the front position of the outer side wall of the lower end of the first mounting shell 8094a, the first locking nut 8094c is rotated and pushes the first mounting shell 8094a to rotate along the first rotating pin 8094b, so that the first locking wheel 8094 moves towards one side of the guide driving gear 8092, the solder wire 100 penetrating through the circumferential surface of the guide driving gear 8092 is compressed, the first locking nut 8094c is connected with the outer wall of the first mounting shell 8094a in a threaded manner, the first mounting shell 8094a is prevented from moving and dislocating, the second locking nut 8095d is rotated and pushed to rotate along the second rotating pin 8095b, so that the second locking wheel 8095 moves towards the middle position between the guide driving gear 8092 and the guide driven wheel 8093, so as to compress the welding wire 100 passing through the space between the guide driving gear 8092 and the guide driven wheel 8093, finally, the second lock nut 8095d is in threaded connection with the outer wall of the second mounting shell 8095a, the guide driving gear 8092 continuously conveys the compressed welding wire 10 into the submerged arc welding gun 10 in the rotation process of the guide driving gear 8091, the welding wire 100 is prevented from loosening and bending in the conveying process, the submerged arc welding gun 10 is adapted to the welding wire diameter of 0.8 mm-1.6 mm, the infrared light or laser emitted by the welding tracker 11 is aligned with the welding position (or welding seam), the welding seam is detected, the detected welding seam information is sent into the welding control box 807 for analysis treatment, whether the welding tracker 11 is aligned with the welding seam or not is controlled by outputting a driving control command, the welding control box 807 drives and controls the horizontal sliding driving motor 8043 and the vertical sliding driving motor 8044, thereby adjusting the position of the welding tracker 11 on the welding wire tightness adjusting device 809, and simultaneously, the rotatable disk 8085a slides and rotates in the supporting disk 8085, so as to adjust the angle of the welding tin recovery nozzle 72 and the submerged arc welding gun 10 which are clamped and fixed on the welding wire tightness adjusting device 809 along the vertical direction; in the welding process of the submerged arc welding gun 10 to the welding line, the welding flux recovery conveyor 8020 continuously conveys welding flux to the submerged arc welding gun 10, the welding flux is scattered around the welding line in the welding process of the submerged arc welding gun 10, the welding flux falling on the surface of the can-emitting workpiece 50 in the welding process of the submerged arc welding gun 10 is continuously absorbed by the welding flux recovery suction nozzle 9, and the welding flux absorbed by the welding flux recovery suction nozzle 9 is recovered through the welding flux recovery conveyor 8020, so that the automatic cleaning and recovery of the welding flux in the welding process of the submerged arc welding are achieved, and the welding flux is saved.

In the present invention, referring to fig. 1 to 13, a welding method using an external automatic welding device of a sugar-making evaporation tank of the present invention includes a step of controlling the running of a gantry upright frame 2, a step of controlling the adjustment of a welding support platform 6 horizontally provided below the top end of the gantry upright frame 2, a step of controlling the adjustment of a support member 5 provided between the insides along the lower end of the gantry upright frame 2, a step of controlling the adjustment of a submerged arc welding member 8 on the welding support platform 6, and a step of recovering the welding flux through a solder recovery suction nozzle 9 by a flux recovery conveyor 8020; the specific welding steps are as follows: a supporting component 5 for supporting the evaporation tank workpiece 50 is arranged between the inner sides of the lower ends of the gantry upright post frames 2 through two parallel second guide rails 4, and the relative spacing of the supporting components 5 is adjusted to be suitable for placing the diameter of the evaporation tank workpiece 50; the evaporation tank workpiece 50 to be welded is placed on the supporting roller 502 after being assembled, and the relative position of the evaporation tank workpiece 50 and the submerged arc welding gun 10 is adjusted so that the plane of the welding line is parallel to the vertical plane of the rotating shaft 8046; adjusting the height of the rotation shaft 8046 and adjusting the angle between the submerged arc welding gun 10 and the plane of the welding line so as to align the welding gun with the welding line; when the first sliding driving motor 504 is started to drive the supporting roller 502 to rotate, the evaporation tank workpiece 50 is driven to rotate, and the submerged arc welding gun 10 is enabled to weld along the welding line direction; the rotation speed of the support roller 502 when driving the evaporation tank workpiece 50 to rotate is less than or equal to the wire feeding speed of the submerged arc welding gun 10; the side walls of the welding support platform 6 are connected to the side walls of the two sides of the gantry upright frame 2 through sliding support blocks 60 which are arranged in a sliding manner along the vertical direction, the submerged arc welding assembly 8 is positioned at a proper relative welding position height by adjusting the height of the welding support platform 6, and the outer walls of the evaporation tank workpieces 50 are welded at different height positions; when the lifting driving motor 20 drives the sliding supporting blocks 60 to slide up and down along the two sides of the top end of the gantry upright frame 2 through the transmission chain 21, the sliding supporting blocks 60 are driven to slide up and down along the two sides of the top end of the gantry upright frame 2, so that the height of the sliding supporting blocks 60 is adjusted, and the submerged arc welding assembly 8 is positioned at a proper relative welding position height by adjusting the height of the welding supporting platform 6, so that the outer wall of the evaporation tank workpiece 50 is welded at different height positions; the welding tracker 11 is used for acquiring the welding seam position of the evaporation tank workpiece 50, and the welding control box 807 outputs a control signal to adjust the height position and the horizontal position of the submerged arc welding device 804 so as to adjust the submerged arc welding device 804 to be at a proper relative welding position height, so that the submerged arc welding gun 10 is aligned with the welding seam of the evaporation tank workpiece 50, and the outer wall of the evaporation tank workpiece 50 is welded in a relative vertical height direction; the welding control box 807 at least comprises a controller (a PLC controller or a singlechip controller) and a communication module (a WIFI communication module or a GPRS communication module); the welding tracker 11 tracks the height distance and the left-right deviation between the welding seam of the evaporation tank workpiece 50 and the submerged arc welding gun 10 in real time; the controller of the welding control box 807 acquires the height distance and the left-right deviation, and the controller outputs a control signal to adjust the submerged arc welding device 804 to be at a proper relative welding position height, so that the submerged arc welding gun 10 is aligned with the welding seam of the evaporation tank workpiece 50, and the data information of the height distance and the left-right deviation is sent to a remote welding monitoring system through a WIFI communication module or a GPRS communication module; the upper roller 800 and the lower roller 801 in the submerged arc welding assembly 8 are meshed on the upper edge surface and the lower edge surface of the square hole 7 in the connecting support platform 6 to roll, so that the submerged arc welding assembly 8 is adjusted to be in a proper horizontal position to weld the horizontal position of the outer wall of the evaporation tank workpiece 50; the welding tracker 11 moves forward along the welding line position of the evaporation tank workpiece 50 in the rotating process of the evaporation tank workpiece 50 to enable the submerged arc welding gun 10 to be aligned with the welding line position of the evaporation tank workpiece 50 for welding operation, the flux recycling conveyor 8020 continuously conveys flux to the submerged arc welding gun 10, meanwhile, the flux recycling conveyor 8020 is started to recycle scattered flux in the welding process through the soldering tin recycling suction nozzle 9, and after welding is completed, all operation parts of the submerged arc welding assembly 8 are closed through the welding control box 807; further comprising welding by adjusting the angle of the submerged arc welding device 804 in the vertical direction so that the submerged arc welding gun 10 is aligned with the welding line angle of the evaporation tank workpiece 50 in the vertical direction; through rotating the rotating disc 8085a in the supporting disc 8085 on the welding fixing head 808, the rotating indication strip 8086a indicates the position of the arc scale mark 8085b, so that the rotating angle of the rotating disc 8085a is known, after the rotating disc 8085a is adjusted to a certain angle, the rotating disc 8085a is locked and fixed in the supporting disc 7509 through the locking handle 8085c, the rotating seat 8086 is driven to rotate when the rotating disc 8085a rotates, and the solder recycling suction nozzle 9, the solder wire tightness adjusting device and the submerged arc welding gun 10 on the supporting plate 8087 also rotate along with the rotating disc, so that the purpose of adjusting the angles of the solder recycling suction nozzle 9 and the submerged arc welding gun 10 is achieved.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. An outside automatic welder of sugaring evaporation jar, its characterized in that: the external automatic welding device comprises two parallel first guide rails (1) arranged in a foundation and a gantry upright post frame (2) fixedly installed between the two parallel first guide rails (1), wherein two sides of the bottom end of the gantry upright post frame (2) are fixed on the first guide rails (1) through first sliding seats (3), two second guide rails (4) parallel to the first guide rails (1) are arranged in the foundation between the two parallel first guide rails (1), a plurality of pairs of supporting components (5) for supporting evaporation tank workpieces (50) are arranged on the two parallel second guide rails (4), the supporting components (5) are fixed on the second guide rails (4) through second sliding seats (40), a welding supporting platform (6) is horizontally arranged below the top end of the gantry upright post frame (2), the side walls of the welding supporting platform (6) are connected on the side walls of two sides of the gantry upright post frame (2) through sliding supporting blocks (60) arranged along the vertical direction, a hollow motor (7) is arranged in the center of the welding supporting platform (6), a gantry upright post frame (2) is provided with a lifting square lifting motor (20) which is arranged in the two sides of the gantry upright post frame (2), the lifting driving motor (20) is in transmission connection with the sliding supporting block (60) through a transmission chain (21), the bottom end of the gantry upright frame (2) is in sliding connection with the first guide rail (1) through a first sliding seat (3), and the first sliding seat (3) is in transmission contact with the first guide rail (1) through a first travelling driving motor (30);

The submerged arc welding assembly (8) comprises an upper roller (800) and a lower roller (801) which are meshed with the upper edge surface and the lower edge surface of a square hole (7) in a welding supporting platform (6), a vertical bracket (802) which is hung between the upper roller (800) and the lower roller (801), a horizontal fixing bracket (803) which is horizontally fixed on the vertical bracket (802), a submerged arc welding device (804) which is fixed below the horizontal fixing bracket (803), a double-wire welding wire disc (805) which is respectively fixed above the vertical bracket (802) and the horizontal fixing bracket (803), a rolling driving motor (800 a) is arranged at the side part of the upper roller (800), an output shaft of the rolling driving motor (800 a) is respectively in transmission connection with the upper roller (800) and the lower roller (801), a solder recycling suction nozzle (9) is arranged at the right rear side of the submerged arc welding device (804), a solder recycling conveyor (8020) is arranged at the side part of the top end of the vertical bracket (802), a vibration filter drum (8021) is arranged at the bottom end outlet of the solder recycling conveyor (8020), the vibration filter drum (8021) is respectively connected with the solder recycling inlet (8020) through the vibration recycling pipe (80 a), a rotary supporting beam (806) is arranged on the outer side wall of the vertical support (802) close to one side of the upper roller (800), the rotary supporting beam 806 is a multi-section rotary supporting beam, a welding control box (807) is arranged at the tail end of the rotary supporting beam (806), the welding control box (807) is respectively electrically connected with the rolling driving motor (800 a) and the submerged arc welding device (804), and two manual control boards (807 a) are arranged on the rotary supporting beam (806) below the welding control box (807);

The submerged arc welding device (804) comprises a second fixing seat (8040), a T-shaped horizontal sliding block (8041), a T-shaped vertical sliding block (8042), a horizontal sliding driving motor (8043), a vertical sliding driving motor (8044), a rotating supporting seat (8045) and a pair of welding fixing heads (808), a submerged arc welding gun (10) is fixed on the welding fixing heads (808), the second fixing seat (8040) is fixed below the horizontal fixing seat (803), a horizontal sliding channel (8040 a) is formed in the second fixing seat (8040), the sliding end part of the T-shaped horizontal sliding block (8041) is in sliding buckling connection in the horizontal sliding channel (8040 a), the output shaft of the horizontal sliding driving motor (8043) is in transmission connection with the sliding end part of the T-shaped horizontal sliding block (8041), a vertical sliding channel (8041 a) is formed in the bottom of the T-shaped horizontal sliding block (8041), the sliding end part of the T-shaped horizontal sliding block (8041) is in sliding buckling connection with the vertical sliding end part of the vertical sliding block (8042) in the vertical sliding driving motor (8042), the sliding end part of the vertical sliding driving motor (8042) is in sliding connection with the side wall of the vertical sliding end part (8042), the bottom of the T-shaped vertical sliding block (8042) is fixed with the rotary supporting seat (8045), the rotary supporting seat (8045) is provided with a rotary shaft (8046) which extends outwards, and a pair of welding fixing heads (808) are symmetrically fixed on the end part of the rotary shaft (8046);

The welding fixing head (808) comprises a groove-shaped fixing seat (8080) fixed on the end part of the rotating shaft (8046) and a pair of welding wire tightness adjusting devices (809) fixed right in front of the groove-shaped fixing seat (8080), linear guide rails (8081) which are in central symmetry are arranged at two ends in the groove-shaped fixing seat (8080), at least two linear bearings (8082) are arranged on the linear guide rails (8081) in a sliding manner, a fixed supporting seat (8083) is arranged on the linear bearings (8082), a linear motor (8084) is fixed on the groove-shaped fixing seat (8080), an output shaft of the linear motor (8084) is in transmission connection with the fixed supporting seat (8083), a supporting disc (8085) is fixed on the front side wall of the fixed supporting seat (8083), a supporting disc (8085) is in meshed transmission connection with the fixed supporting disc (8083 a) through a vertically arranged worm (8083 a), a rotatable rotating disc (8085 a) is arranged in the center of the supporting disc (8085), a rotating disc (8086) is fixed on the outer wall of the rotating disc (8082), a rotating disc (8085) is arranged on the outer wall of the rotating disc (8085), a rotating disc (80 b) is arranged on the rotating disc (80), a rotating disc (80 b) is arranged on the outer side wall of the rotating disc (80) and is arranged on the rotating disc (80) and is fixed on the rotating disc (80 b) and is arranged on the rotating disc (80), one end of the locking handle rod (8085 c) is in threaded connection with the disc surface of the supporting disc (8085), the inner edge surface of the rotating seat (8086) is perpendicularly and outwards fixedly connected with a supporting plate (8087), the connecting part between the rotating seat (8086) and the supporting plate (8087) is vertically provided with a soldering tin recovery suction nozzle (9), the inner side wall of the supporting plate (8087) is fixedly provided with a welding wire tightness adjusting device, and the welding wire tightness adjusting device is fixedly provided with a submerged arc welding gun (10).

2. The automatic welding device for the exterior of a sugar-making evaporation tank according to claim 1, wherein: the support assembly (5) comprises a first fixed seat (500), a sliding support seat (501), a support roller (502) and a plurality of horizontal support beams (503) transversely and horizontally fixed between two parallel second guide rails (4), wherein the horizontal support beams (503) are in a strip-shaped groove shape, two ends of each horizontal support beam (503) are respectively fixed on the second guide rails (4) through the second sliding seat (40), a first sliding driving motor (504) is arranged on the outer wall of one side of each horizontal support beam (503), a first bearing seat (505) is arranged on the outer wall of the other side of each horizontal support beam (503), screw nuts (506) are respectively arranged in the two ends of each horizontal support beam (503), one end of each screw rod (507) is in transmission connection with the output shaft of each first sliding driving motor (504), the other ends of each screw rod (507) sequentially penetrate through the screw nuts (506) in the two ends of each horizontal support beam (503) and are sleeved in the first bearing seat (505), the two ends of each horizontal support beam (503) are respectively contacted with the edges of the sliding support beams (501), the bottom center of the sliding support seat (501) is fixed on a screw rod nut (506), the screw rod nut (506) drags the sliding support seat (501) to slide on a horizontal support beam (503), and the support roller (502) is fixed on the sliding support seat (501) through a first fixing seat (500).

3. The automatic welding device for the exterior of a sugar-making evaporation tank according to claim 2, wherein: a supporting rotary motor (508) is fixed on the outer side wall of the first fixing seat (500), and the supporting rotary motor (508) is in transmission connection with the supporting roller (502).

4. The automatic welding device for the exterior of a sugar-making evaporation tank according to claim 2, wherein: a displacement detection switch (509) is provided on the side wall of the lead screw nut (506).

5. The automatic welding device for the exterior of a sugar-making evaporation tank according to claim 1, wherein: the welding wire tightness adjusting device (809) comprises a tightness supporting plate (8090) fixed on the inner side wall of the supporting plate (8087) and a guide driving motor (8091) fixed on the outer side wall of the supporting plate (8087), a guide driving gear (8092) and a guide driven wheel (8093) are respectively fixed on the tightness supporting plate (8090) from top to bottom, the guide driving gear (8092) is fixed on the supporting plate (8087) through a second bearing seat (8092 a), the guide driving gear (8092) is sleeved on a second bearing seat (8092 a), the second bearing seat (8092 a) and the guide driving gear (8092) are fixed on the upper side wall of the tightness supporting plate (8090) in a sliding manner along the vertical direction through a first central sliding shaft (8092 b), an output shaft of the guide driving motor (8091) passes through the second bearing seat (8092 a) to be sleeved with the guide driving gear (8092), the guide driven wheel (8093) is fixed on the lower side wall of the tightness supporting plate (8090) along the vertical direction through a second central sliding shaft (8093 a) in a sliding manner, the guide driven wheel (8094) is fixed on the first side wall (8094) through a) and the first rotating shaft (8094) is arranged on the front side wall (80 b) of the supporting plate (8094), the first locking wheel (8094) is fixed on the inner wall of the lower end of the first installation shell (8094 a) through a first central shaft (8094 c), a first locking nut (8094 d) for driving the first installation shell (8094 a) to rotate is arranged in front of the outer side wall of the lower end of the first installation shell (8094 a), and the first locking nut (8094 d) is connected to the front side wall of the top end of the elastic supporting plate (8090) through a first L-shaped rotating rod (8094 e); a second locking wheel (8095) and a second mounting shell (8095 a) are arranged in front of a guide driving gear (8092) and a guide driven wheel (8093), the lower end side wall of the second mounting shell (8095 a) is fixed on the lower end inner side wall of the elastic supporting plate (8090) through a second rotating pin shaft (8095 b), the second locking wheel (8095) is fixed on the upper end inner side wall of the second mounting shell (8095 a) through a second central shaft (8095 c), a second locking nut (8095 d) for driving the second mounting shell (8095 a) to rotate is arranged in front of the upper end front side wall of the second mounting shell (8095 a), and the second locking nut (8095 d) is connected on the bottom end front side wall of the elastic supporting plate (8090) through a second L-shaped rotating rod (8095 e); a clamping part (8010) is fixed on the lower end part of the elastic support plate (8090), the submerged arc welding gun (10) is vertically clamped on the clamping part (8010), the submerged arc welding gun (10) is connected on the clamping part (8010) through a plurality of sections of submerged arc channel pipes which are connected in series, a welding tracker (11) is vertically fixed right in front of the submerged arc welding gun (10), and the soldering tin recovery suction nozzle (9) is vertically arranged right behind the submerged arc welding gun (10) through a connecting part between a rotating seat (8086) and the support plate (8087); at least a controller and a communication module are included within the weld control box (807); the welding tracker (11) is used for tracking the height distance and the left-right deviation between the welding seam of the evaporation tank workpiece (50) and the submerged arc welding gun (10) in real time; the controller of the welding control box (807) acquires the height distance and the left-right deviation, and sends the data information of the height distance and the left-right deviation to a remote welding monitoring system through a communication module; the welding tracker (11) is used for detecting welding seams, sending detected welding seam information into the welding control box (807) for analysis and processing, judging whether the welding tracker (11) is aligned to the welding seams, and the welding control box (807) drives and controls the horizontal sliding driving motor (8043) and the vertical sliding driving motor (8044) by outputting driving control instructions, so that the position of the welding tracker (11) on the welding wire tightness adjusting device (809) is adjusted.

6. A welding method using the automatic welding device for the exterior of a sugar-making evaporation tank according to any one of claims 1 to 5, characterized in that: the welding flux recycling method comprises a walking control step of a gantry upright frame (2), a step of adjusting and controlling a welding support platform (6) horizontally arranged below the top end of the gantry upright frame (2), a step of adjusting a support assembly (5) arranged between the inner sides along the lower end of the gantry upright frame (2), a step of adjusting and controlling a submerged arc welding assembly (8) on the welding support platform (6), and a step of recycling welding flux through a soldering flux recycling suction nozzle (9) by a soldering flux recycling conveyor (8020); the specific welding steps are as follows:

a supporting component (5) for supporting the evaporation tank workpiece (50) is arranged between the inner sides of the lower ends of the gantry upright post frames (2) through two parallel second guide rails (4), and the relative spacing of the supporting component (5) is adjusted to be suitable for placing the diameter of the evaporation tank workpiece (50);

the side walls of the welding support platform (6) are connected to the side walls of the two sides of the gantry upright frame (2) through sliding support blocks (60) which are arranged in a sliding manner along the vertical direction, and the submerged arc welding assembly (8) is positioned at proper relative welding position heights by adjusting the height of the welding support platform (6) so as to be positioned at different height positions on the outer wall of the evaporation tank workpiece (50); the welding tracker (11) is used for acquiring the welding seam position of the evaporation tank workpiece (50), and the welding control box (807) outputs a control signal to adjust the height position and the horizontal position of the submerged arc welding device (804) so as to adjust the submerged arc welding device (804) to be at a proper relative welding position height, so that the submerged arc welding gun (10) is aligned with the welding seam of the evaporation tank workpiece (50), and the outer wall of the evaporation tank workpiece (50) is welded in a relative vertical height direction; the upper roller (800) and the lower roller (801) in the submerged arc welding assembly (8) are adjusted to be meshed with the upper edge surface and the lower edge surface of the square hole (7) in the connecting support platform (6) for rolling, so that the submerged arc welding assembly (8) is adjusted to be positioned at a proper horizontal position for welding the horizontal position of the outer wall of the evaporation tank workpiece (50);

The welding machine is characterized in that the welding machine is horizontally walked through the gantry upright post frame (2) and vertically matched with the supporting platform (6) in a sliding manner, the submerged arc welding assembly (8) is driven to move, the evaporation tank workpiece (50) is controlled to rotate through the supporting assembly (5) to weld, the welding tracker (11) moves forwards along the welding line position of the evaporation tank workpiece (50) in the rotating process, the submerged arc welding gun (10) is aligned to the welding line position of the evaporation tank workpiece (50) to carry out welding operation, the welding flux recycling conveyor (8020) continuously conveys welding flux to the submerged arc welding gun (10), meanwhile, the welding flux recycling conveyor (8020) is started to recycle scattered welding flux in the welding process through the welding flux recycling suction nozzle (9), and after welding is completed, all operation parts of the submerged arc welding assembly (8) are closed through the welding control box (807).

7. The welding method according to claim 6, wherein: the method further comprises the step of enabling the submerged arc welding gun (10) to be aligned with the welding line angle of the evaporation tank workpiece (50) along the vertical direction for welding by adjusting the angle of the submerged arc welding device (804) along the vertical direction.