阅读说明：本技术 一种厚壁金属直缝焊管焊缝自动对齐快速焊接装置及方法 (Automatic alignment and rapid welding device and method for welding seam of thick-wall metal straight welded pipe ) 是由 楚志兵 李帅 桂海莲 赵晓东 周新亮 李岩 于 2021-11-05 设计创作，主要内容包括：本发明专利涉及焊管加工设备领域,具体涉及一种厚壁金属直缝焊管焊缝自动对齐快速焊接装置及方法,一种厚壁金属直缝焊管焊缝自动对齐快速焊接装置,包括焊接主机,在焊接主机的入口侧和出口侧均设置有多组辊轮支撑机构,用于实现焊管坯料的进料和出料,在焊接主机的入口侧还设置有链条输送机构,以通过滚子输送链辅助焊管坯料的进料,在焊接主机的入口侧还设置有多组焊缝调节机构,用于带动焊管进行径向旋转,从而调整焊管坡口的位置,确保焊缝位置朝上；本发明通过设置多个整圆机构来对待加工的管坯进行圆度矫正,同时本发明中的整圆机构还可以根据实际的需要进行周向位置的调节和压下深度的调节,针对管坯的管径和错位缺陷情况进行灵活的调整。(The invention relates to the field of welded pipe processing equipment, in particular to an automatic alignment quick welding device and method for a welding seam of a thick-wall metal straight welded pipe, and the automatic alignment quick welding device comprises a welding host, wherein a plurality of groups of roller supporting mechanisms are arranged on the inlet side and the outlet side of the welding host and used for feeding and discharging a welding pipe blank; the invention carries out roundness correction on the tube blank to be processed by arranging the plurality of rounding mechanisms, and meanwhile, the rounding mechanisms can also carry out circumferential position adjustment and pressing depth adjustment according to actual needs, thereby flexibly adjusting the tube diameter and dislocation defect conditions of the tube blank.)

1. The utility model provides a thick wall metal straight welded pipe welding seam automatic alignment rapid welding device which characterized in that: the welding machine comprises a welding host, wherein a plurality of groups of roller supporting mechanisms are arranged on the inlet side and the outlet side of the welding host and used for feeding and discharging welded pipe blanks, a chain conveying mechanism is further arranged on the inlet side of the welding host to assist in feeding of the welded pipe blanks through a roller conveying chain (35), the roller conveying chain (35) in the chain conveying mechanism is located between two supporting rollers (30) which are oppositely arranged in the roller supporting mechanisms, a plurality of groups of welding seam adjusting mechanisms are further arranged on the inlet side of the welding host and are arranged among the plurality of groups of roller supporting mechanisms at intervals and used for driving the welded pipe to rotate radially, so that the position of a groove of the welded pipe is adjusted, and the position of a welding seam is ensured to be upward;

the welding host comprises a base (1), a fixing frame (2) is fixedly arranged on the upper surface of the base (1), a rack (3) is arranged on the front side of the fixing frame (2), inclined limiting strips (4) are arranged on the left side and the right side of the contact surface of the fixing frame (2) and the rack (3), the two inclined limiting strips (4) jointly form a dovetail block, limiting blocks (5) corresponding to the inclined limiting strips (4) are arranged on the left side and the right side of the contact surface of the rack (3) and the fixing frame (2), the two inclined limiting blocks (5) jointly form a dovetail groove, the inclined limiting strips (4) and the inclined limiting blocks (5) are mutually matched to realize the limiting of the rack (3) when the rack (3) slides up and down along the fixing frame (2), two hydraulic cylinders (6) are arranged on the left side and the right side of the lower surface of the rack (3), and a third hydraulic cylinder (7) is arranged in the middle of the lower surface of the rack (3), the cylinder bodies of the second hydraulic cylinder (6) and the third hydraulic cylinder (7) are fixedly connected on the base (1), the movable ends of the second hydraulic cylinder (6) and the third hydraulic cylinder (7) are connected with the lower surface of the frame (3), a machining through hole (8) which penetrates through the frame (3) from front to back is arranged in the middle of the frame, fixed rings (9) are arranged on the front side and the back side of the frame (3), the circle center of each fixed ring (9) is located on the axis of the machining through hole (8), a plurality of rounding mechanisms are uniformly arranged in the machining through hole (8) in a circumferential arrangement mode and comprise two connecting rods (10), an installation groove body (11) is connected to the lower ends of the two connecting rods (10) together, a plurality of sliding wheels (12) are installed in the installation groove body (11), so that welding pipe blanks are compressed by the sliding wheels (12), a transmission shaft (13) is further arranged between the two connecting rods (10), the transmission shaft (13) is positioned at the middle lower part of the connecting rods (10), one end of the transmission shaft (13) is connected with an output shaft of a transmission motor (14), the transmission motor (14) is installed on the connecting rods (10), two gears (15) are installed on the transmission shaft (13), the two gears (15) respectively correspond to the two fixed rings (9) one by one, arc-shaped racks (16) corresponding to the gears (15) are arranged on the inner annular surface of each fixed ring (9), a fixed shaft (17) is arranged in the middle of each connecting rod (10), rollers (18) are installed on the fixed shafts (17) through bearings, rolling grooves (19) corresponding to the rollers (18) are arranged on the fixed rings (9) to limit the whole circular mechanism, a locking hydraulic cylinder (20) is arranged at the upper part of the connecting rod (10), a first groove (21) is formed in the outer annular surface of the fixed ring (9), a locking head of the locking hydraulic cylinder (20) is arranged in the first groove (21) so as to lock the rounding mechanism when needed, a mounting plate (22) is fixedly arranged at the top of the front side of the rack (3), a lifting and contracting rod (23) is arranged on the mounting plate (22) in an upward and downward direction, a guide plate (24) is fixedly arranged at the movable end of the lifting and contracting rod (23), the guide plate (24) is used for being inserted into a welded pipe slope to ensure the accuracy of a welding position, a lead screw lifting mechanism (25) is arranged on one vertical inner side wall of the fixing frame (2), a cross rod (26) is arranged on a sliding block of the lead screw lifting mechanism (25), and a welding head (27) is arranged at the end part of the cross rod (26), the method is used for welding the welded pipe blank.

2. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 1, is characterized in that: running roller supporting mechanism includes mounting bracket (28) the upper surface mounting of mounting bracket (28) has two backup roll (30) that set up relatively, backup roll (30) are the toper, one of them the output shaft of the installation axle of backup roll (30) and running roller motor (29), running roller motor (29) set up on mounting bracket (28).

3. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 2, is characterized in that: the chain conveying mechanism comprises a main wheel support (31) and a secondary wheel support (32), the main wheel support (31) is installed on a fixed frame (2) in a welding host, the secondary wheel support (32) is installed on one of installation frames (28) on the inlet side of the welding host, a driving chain wheel (33) and a driven chain wheel (34) are respectively arranged on the main wheel support (31) and the secondary wheel support (32), a roller conveying chain (35) is jointly arranged on the driving chain wheel (33) and the driven chain wheel (34) to drive a welding pipe blank to advance through the roller conveying chain (35), the driving chain wheel (33) is installed on an output shaft of a chain wheel motor (36), and the chain wheel motor (36) is installed on the main wheel support (31).

4. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 3, is characterized in that: the adjustable roller chain wheel is characterized in that a first sliding groove (37) is formed in the wheel support (32), a first sliding block (38) is arranged in the first sliding groove (37), the driven chain wheel (34) is installed on the first sliding block (38), a through hole is formed in the side wall of the first sliding groove (37), an adjusting bolt (39) is arranged in the through hole, the inner side end of the adjusting bolt (39) is fixedly connected with the first sliding block (38), two adjusting nuts (40) are arranged on the adjusting bolt (39), and the two adjusting nuts (40) are respectively located on two sides of the side wall so as to adjust and fix the position of the adjusting bolt (39), so that the position of the driven chain wheel (34) is adjusted, and the roller chain conveyor (35) is adjusted in tightness.

5. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 4, is characterized in that: a tension sprocket (41) is also arranged on the side wall of the wheel bracket (32) so as to adjust the tightness of the roller conveying chain (35).

6. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 5, is characterized in that: supporting beams (42) are arranged on the upper portion and the lower portion of the mounting frame (28) between the main wheel bracket (31) and the driven wheel bracket (32), and a plurality of supporting chain wheels (43) are uniformly arranged on the supporting beams (42) to prevent the roller conveying chain (35) from excessively dropping.

7. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 6, is characterized in that: the welding seam adjusting mechanism comprises a mounting seat (44), a lifting frame (45) is arranged above the mounting seat (44), a third guide rod (46) which is bilaterally symmetrical is arranged on the lower surface of the lifting frame (45), a guide groove (47) corresponding to the third guide rod (46) is arranged on the mounting seat (44), a first hydraulic cylinder (48) is arranged on the upper surface of the mounting seat (44), an expansion rod of the first hydraulic cylinder (48) is hinged with the lower surface of the lifting frame (45), two adjusting rollers (49) are arranged on the upper surface of the lifting frame (45) side by side, an adjusting driven chain wheel (50) is arranged on a mounting shaft of one of the adjusting rollers (49), the adjusting driven chain wheel (50) is connected with an adjusting main chain wheel (52) through an adjusting chain (51), and the adjusting main chain wheel (52) is mounted on an output shaft of an adjusting motor (53), the adjusting motor (53) is arranged on the lifting frame (45), the adjusting roller (49) is indirectly driven to rotate through the adjusting motor (53), and finally the welding pipe blank is driven to rotate, so that the welding position of the welding pipe blank is adjusted.

8. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 7, is characterized in that: connecting rod (10) include casing (1001) be provided with No. four pneumatic cylinders (1002) in casing (1001), the expansion end of No. four pneumatic cylinders (1002) with installation cell body (11) are articulated still slide in casing (1001) and be provided with No. two guide bars (1003), the stiff end and the installation cell body (11) fixed connection of No. two guide bars (1003).

9. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 8, is characterized in that: the left and right sides of frame (3) lower surface is provided with guiding hole (54) No. one the upper portion of guiding hole (54) is provided with spacing hole (55) be provided with guide bar (56) in guiding hole (54) No. one stopper (57) of upper end fixedly connected with of guide bar (56), No. one stopper (57) are located spacing hole (55) the upper surface of base (1) is provided with two direction cylinder bodies (58), and two direction cylinder bodies (58) and two guiding hole (54) one-to-one, the lower extreme of guide bar (56) stretches into direction cylinder body (58) in-connection and has No. two stopper (59).

10. The automatic alignment rapid welding device for the weld joint of the thick-wall metal straight welded pipe according to claim 9, is characterized in that: the telescopic lifting rod (23) is an electric telescopic rod.

11. The automatic alignment rapid welding method for the welding seam of the thick-wall metal straight welded pipe based on the welding device of claim 9 is characterized in that: the method comprises the following steps: the method comprises the steps that a welded pipe blank is placed on a roller supporting mechanism on the inlet side of a welding host machine, the welded pipe blank is supported by a supporting roller (30), then a roller motor (29) and a chain wheel motor (36) are started, the roller motor (29) drives the supporting roller (30) to rotate, the chain wheel motor (36) drives a roller conveying chain (35) to move, the welded pipe blank is conveyed to a machining position under the combined action of the supporting roller (30) and the roller conveying chain (35), an adjusting motor (53) in a welding seam adjusting mechanism drives an adjusting roller (49) to rotate through an adjusting main chain wheel (52), an adjusting chain (51) and an adjusting auxiliary chain wheel (50) in the conveying process, the welded pipe blank radially rotates under the action of the adjusting roller (49), and the position of the welded pipe blank is adjusted; then under the action of a second hydraulic cylinder (6) and a third hydraulic cylinder (7), the height of the frame (3) is adjusted to enable the circle center of the processing through hole (8) and the circle center of the welding pipe blank to be positioned on the same horizontal line, a telescopic rod (23) is lifted to drive a guide plate (24) to lift, the guide plate (24) is inserted into the welding pipe slope, a transmission motor (14) drives an arc rack (16) of a gear (15) on a fixed ring (9) to rotate through a transmission shaft (13), further the position of a rounding mechanism is adjusted, after the position is adjusted, a locking hydraulic cylinder (20) retracts to fix the position of the rounding mechanism, then a fourth hydraulic cylinder (1002) stretches and retracts to adjust the position of a sliding wheel (12), so that the sliding wheel (12) is pressed on the outer surface of the welding pipe blank, the processing roundness of the welding pipe blank is ensured, and meanwhile, the welding port of the welding pipe blank can be welded perfectly, the lead screw lifting mechanism (25) drives the welding head (27) to adjust the height position, so that the welding head (27) can weld the passing welded pipe blank, and the welded pipe after welding is sent out through the roller supporting mechanism on the outlet side of the welding host machine.

Technical Field

The invention relates to the field of welded pipe processing equipment, in particular to an automatic alignment and rapid welding device and method for a welding seam of a thick-wall metal straight welded pipe.

Background

The metal plate is pre-bent into a quasi-circular shape through a bending machine, inward pressure is applied from the outer side of the steel pipe through a pressure die, the steel plate is forced to further bend and then the gap is closed, and pre-welding spot fixing is carried out on the gap at intervals, so that preliminary forming operation of the steel pipe is completed. However, after the steel pipe is bent into a round-like shape, dislocation defects such as peach shape, apple shape, misalignment and the like often exist, the defects have great influence on welding quality, the traditional seaming device mostly adopts a four-pressure head structure and a fixed multi-pressure head structure (seven pressure heads, nine pressure heads and twelve pressure heads), aiming at the four-pressure head structure, two butt joint edges are easy to dislocate, so that welding cannot be carried out in the same plane, especially thick-wall pipes are more difficult to control and align, and the problems can be corrected only by manual intervention; the traditional multi-pressure head structure seaming device adopts fixed pressure heads, the pressure head structures are fixedly and uniformly distributed on the rack, the same pressure points are adopted for applying pressure to different dislocation types, and in actual production, due to different dislocation types, the required pressure heads need to be adjusted in position according to the dislocation situation of welding seams, which is contrary to the traditional equipment principle and difficult to effectively correct dislocation defects; in addition, the traditional joint closing device adopts manual spot welding to weld the pipes after joint closing, a large amount of manual uninterrupted operation is needed, the workload is large, the efficiency is low, the welding quality of finished pipes is difficult to guarantee to be consistent, meanwhile, due to the problem of equipment space, workers must ride on the pipes during manual pre-welding, and the safety factor is low. The automatic alignment rapid welding device for the welding seam of the thick-wall metal straight welded pipe is invented based on the device, and a process technology matched with the device is formed, so that the defects of traditional equipment can be well overcome, and the production efficiency of a production line and the quality of products are effectively improved.

Disclosure of Invention

Aiming at the problems, the invention provides an automatic alignment and rapid welding device and method for a welding seam of a thick-wall metal straight welded pipe.

In order to achieve the purpose, the invention adopts the following technical scheme:

a welding seam automatic alignment rapid welding device for thick-wall metal straight welded pipes comprises a welding host, wherein a plurality of groups of roller supporting mechanisms are arranged on the inlet side and the outlet side of the welding host and used for feeding and discharging welded pipe blanks, a chain conveying mechanism is further arranged on the inlet side of the welding host and used for assisting the feeding of the welded pipe blanks through a roller conveying chain, the roller conveying chain in the chain conveying mechanism is located between two supporting rollers which are oppositely arranged in the roller supporting mechanisms, a plurality of groups of welding seam adjusting mechanisms are further arranged on the inlet side of the welding host and arranged among the plurality of groups of roller supporting mechanisms at intervals and used for driving the welded pipes to rotate radially, so that the positions of grooves of the welded pipes are adjusted, and the welding seams are ensured to face upwards;

the welding host comprises a base, a fixed frame is fixedly arranged on the upper surface of the base, a frame is arranged on the front side of the fixed frame, inclined limiting strips are arranged on the left side and the right side of the contact surface of the fixed frame and the frame, two inclined limiting strips jointly form a dovetail block, limiting inclined blocks corresponding to the inclined limiting strips are arranged on the left side and the right side of the contact surface of the frame and the fixed frame, two limiting inclined blocks jointly form a dovetail groove, the inclined limiting strips and the limiting inclined blocks are mutually matched to realize the limiting of the frame when the frame slides up and down along the fixed frame, two hydraulic cylinders are arranged on the left side and the right side of the lower surface of the frame, a three-number hydraulic cylinder is arranged in the middle of the lower surface of the frame, the cylinder bodies of the two-number hydraulic cylinder and the three-number hydraulic cylinder are fixedly connected on the base, and the movable ends of the two-number hydraulic cylinder and the three-number hydraulic cylinder are connected with the lower surface of the frame, the middle part of the frame is provided with a processing through hole which runs through from front to back, the front side and the back side of the frame are both provided with fixed rings, the circle center of each fixed ring is positioned on the axis of the processing through hole, a plurality of rounding mechanisms are uniformly arranged in the processing through hole in a circumferential manner and comprise two connecting rods, the lower ends of the two connecting rods are jointly connected with an installation groove body, a plurality of sliding wheels are arranged in the installation groove body so as to press welding pipe blanks through the sliding wheels, a transmission shaft is also arranged between the two connecting rods and is positioned at the middle lower part of the connecting rods, one end of the transmission shaft is connected with an output shaft of a transmission motor, the transmission motor is arranged on the connecting rods, two gears are arranged on the transmission shaft and respectively correspond to the two fixed rings one by one, and arc-shaped racks corresponding to the gears are arranged on the inner annular surface of the fixed rings, the middle part of the connecting rod is provided with a fixed shaft, the fixed shaft is provided with a roller through a bearing, the fixed ring is provided with a rolling groove corresponding to the roller so as to limit the rounding mechanism, the upper part of the connecting rod is provided with a locking hydraulic cylinder, the outer ring surface of the fixed ring is provided with a groove, the locking head of the locking hydraulic cylinder is arranged in the groove so as to realize the locking of the rounding mechanism when needed, the top part of the front side of the frame is fixedly provided with a mounting plate, the mounting plate is provided with a lifting and contracting rod towards the lower part, the movable end of the lifting and contracting rod is fixedly provided with a guide plate, the guide plate is used for being inserted into a welded pipe slope to ensure the accuracy of the welding position, one vertical inner side wall of the fixing frame is provided with a lead screw lifting mechanism, and a slide block of the lead screw lifting mechanism is provided with a cross rod, and a welding head is arranged at the end part of the cross rod and is used for welding the welding pipe blank.

Further, running roller supporting mechanism includes the mounting bracket the upper surface mounting of mounting bracket has two backing rolls that set up relatively, the backing roll is the toper, one of them the installation axle of backing roll and the output shaft of running roller motor, the running roller motor sets up on the mounting bracket.

Still further, chain conveyor includes main round support and follows the wheel support, the main round support mounting is on the mount in the welding host computer, follow wheel support mounting is on one of them mounting bracket of welding host computer entry side be provided with drive sprocket and driven sprocket respectively on main round support and the follow wheel support be provided with roller conveying chain jointly on drive sprocket and the driven sprocket to it advances to drive the welding pipe blank through roller conveying chain, drive sprocket installs on the output shaft of sprocket motor, the sprocket motor is installed on main round support.

Further, be provided with the spout No. one from the wheel support be provided with the slider No. one in the spout, driven sprocket installs on the slider No. one be provided with the through-hole on the lateral wall of spout No. one be provided with adjusting bolt in the through-hole, adjusting bolt's medial extremity and slider fixed connection adjusting bolt is last to be provided with two adjusting nut, and two adjusting nut are located the both sides of lateral wall respectively to adjust and fixed adjusting bolt's position, thereby realize the regulation of driven sprocket position, ensure the regulation of roller conveying chain elasticity.

Furthermore, a tension chain wheel is arranged on the side wall of the wheel bracket so as to adjust the tightness of the roller conveying chain.

Further, support beams are installed at both upper and lower portions of the mounting frame between the main wheel bracket and the sub wheel bracket, and a plurality of support sprockets are uniformly provided on the support beams to prevent the roller conveyor chain from excessively dropping.

Furthermore, the welding seam adjusting mechanism comprises a mounting seat, a lifting frame is arranged above the mounting seat, a third guide rod which is symmetrical left and right is arranged on the lower surface of the lifting frame, a guide groove corresponding to the third guide rod is arranged on the mounting seat, the upper surface of the mounting seat is provided with a first hydraulic cylinder, the telescopic rod of the first hydraulic cylinder is hinged with the lower surface of the lifting frame, two adjusting rollers are arranged on the upper surface of the lifting frame side by side, an adjusting driven chain wheel is arranged on the mounting shaft of one of the adjusting rollers, the adjusting driven chain wheel is connected with an adjusting main chain wheel through an adjusting chain, the adjusting main chain wheel is arranged on an output shaft of an adjusting motor, the adjusting motor is arranged on the lifting frame, the adjusting motor indirectly drives the adjusting roller to rotate, and finally drives the welding pipe blank to rotate, so that the position of the welding seam of the welding pipe blank is adjusted.

Furthermore, the connecting rod includes the casing be provided with the pneumatic cylinder No. four in the casing, the expansion end of No. four pneumatic cylinders with the installation cell body is articulated still slide in the casing and be provided with the guide bar No. two, the stiff end and the installation cell body fixed connection of guide bar No. two.

Still further, the left and right sides of frame lower surface is provided with the guiding hole No. one the upper portion of guiding hole is provided with spacing hole be provided with the guide bar No. one in the guiding hole No. one the stopper of upper end fixedly connected with of a guide bar, No. one the stopper is located spacing downthehole the upper surface of base is provided with two direction cylinder bodies, and two the direction cylinder body is with two guiding hole one-to-ones, the lower extreme of a guide bar stretches into and is connected with No. two stoppers in the direction cylinder body.

Furthermore, the telescopic lifting rod is an electric telescopic rod.

A thick-wall metal straight welded pipe welding line automatic alignment rapid welding method comprises the following steps: the method comprises the following steps of putting a welded pipe blank on a roller supporting mechanism at the inlet side of a welding host machine, supporting the welded pipe blank through a supporting roller, starting a roller motor and a chain wheel motor, driving the supporting roller to rotate by the roller motor, driving a roller conveying chain to move by the chain wheel motor, conveying the welded pipe blank to a processing position under the combined action of the supporting roller and the roller conveying chain, driving an adjusting roller to rotate by an adjusting motor in a welding seam adjusting mechanism through an adjusting main chain wheel, an adjusting chain and an adjusting auxiliary chain wheel in the conveying process, and radially rotating the welded pipe blank under the action of the adjusting roller to realize the adjustment of the position of a welding seam of the welded pipe blank; then under the action of a second hydraulic cylinder and a third hydraulic cylinder, the height of the frame is adjusted to enable the circle center of the processing through hole and the circle center of the welding pipe blank to be positioned on the same horizontal line, a telescopic rod is lifted to drive a guide plate to lift, the guide plate is inserted into a slope of the welding pipe, a transmission motor drives an arc-shaped rack of a gear on a fixed ring to rotate through a transmission shaft, then the position of the rounding mechanism is adjusted, after the position is adjusted, the locking hydraulic cylinder retracts to fix the position of the rounding mechanism, then the fourth hydraulic cylinder telescopically adjusts the position of the sliding wheel to enable the sliding wheel to be tightly pressed on the outer surface of the welded pipe blank, thereby ensuring the processing roundness of the welding pipe blank and the perfect welding of the welding port, the lead screw lifting mechanism drives the welding head to adjust the height position, the welding head can weld the passing welded pipe blank, and the welded pipe after welding is sent out through the roller supporting mechanism on the outlet side of the welding host machine.

Compared with the prior art, the invention has the following advantages:

the roundness correction device is provided with the plurality of rounding mechanisms to correct the roundness of the tube blank to be processed, and meanwhile, the rounding mechanisms can also adjust the circumferential position and the pressing depth according to actual needs, so that the tube blank can be flexibly adjusted and changed according to the tube diameter and dislocation defect conditions of the tube blank, and the roundness of a welded tube is ensured; meanwhile, the problems of 'pounding mouth' and the like caused by an upstream processing link can be effectively corrected; in addition, the welding of the welded pipe is automatic welding, and compared with manual welding in the prior art, the welding method has the advantages that the working efficiency is improved, the labor cost is saved, the labor intensity is reduced, and the safety coefficient is improved.

Drawings

FIG. 1 is a front view of a welding apparatus of the present invention;

FIG. 2 is a top view of the welding apparatus of the present invention;

FIG. 3 is a top view of the welding host of the present invention;

FIG. 4 is a front view of the welding host of the present invention;

FIG. 5 is a partial cross-sectional view of the rounding mechanism of the present invention;

FIG. 6 is a cross-sectional view taken at section G-G of FIG. 1 in accordance with the present invention;

FIG. 7 is a cross-sectional view taken along section D-D of FIG. 1 in accordance with the present invention;

FIG. 8 is an enlarged view of a portion of circle A of FIG. 1 in accordance with the present invention;

FIG. 9 is an enlarged view of a portion of circle B of FIG. 1 in accordance with the present invention;

FIG. 10 is a partial cross-sectional view of section E-E of FIG. 1 in accordance with the present invention;

FIG. 11 is a top view of the weld adjustment mechanism of the present invention;

fig. 12 is a partial cross-sectional view of section I-I of fig. 4 in accordance with the present invention.

Detailed Description

In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.

As shown in fig. 1 to 12, the automatic alignment rapid welding device for the weld seam of the thick-wall metal straight welded pipe comprises a welding host, wherein a plurality of sets of roller supporting mechanisms are arranged on the inlet side and the outlet side of the welding host, and are used for realizing the feeding and discharging of a welded pipe blank, each roller supporting mechanism comprises a mounting frame 28, two supporting rollers 30 which are oppositely arranged are arranged on the upper surface of the mounting frame 28, the supporting rollers 30 are conical, the mounting shaft of one of the supporting rollers 30 is connected with the output shaft of a roller motor 29, and the roller motor 29 is arranged on the mounting frame 28;

a chain conveying mechanism is arranged at the inlet side of the welding main machine to assist the feeding of the welding pipe blank through a roller conveying chain 35, the roller conveying chain 35 of the chain conveying mechanism is positioned between two supporting rollers 30 which are oppositely arranged in the roller supporting mechanism, the chain conveying mechanism comprises a main wheel bracket 31 and a driven wheel bracket 32, the main wheel bracket 31 is arranged on a fixed frame 2 in the welding main machine, the wheel carrier 32 is mounted on one of the mounting brackets 28 on the inlet side of the welding master, a driving sprocket 33 and a driven sprocket 34 are provided on the main wheel bracket 31 and the driven wheel bracket 32, a roller conveying chain 35 is arranged on the driving chain wheel 33 and the driven chain wheel 34 together, so that the roller conveying chain 35 drives the welded pipe blank to move forward, the driving chain wheel 33 is arranged on an output shaft of a chain wheel motor 36, and the chain wheel motor 36 is arranged on the main wheel bracket 31; a first sliding groove 37 is arranged on the driven wheel support 32, a first sliding block 38 is arranged in the first sliding groove 37, the driven sprocket 34 is mounted on the first sliding block 38, a through hole is arranged on the side wall of the first sliding groove 37, an adjusting bolt 39 is arranged in the through hole, the inner end of the adjusting bolt 39 is fixedly connected with the first sliding block 38, two adjusting nuts 40 are arranged on the adjusting bolt 39, the two adjusting nuts 40 are respectively positioned on two sides of the side wall so as to adjust and fix the position of the adjusting bolt 39, thereby realizing the adjustment of the position of the driven sprocket 34 and ensuring the adjustment of the tightness of the roller conveying chain 35, a tensioning sprocket 41 is further arranged on the side wall of the driven wheel support 32 so as to adjust the tightness of the roller conveying chain 35, and supporting beams 42 are mounted on the upper portion and the lower portion of the mounting rack 28 between the main wheel support 31 and the driven wheel support 32, a plurality of supporting chain wheels 43 are uniformly arranged on the supporting beam 42 to prevent the roller conveying chain 35 from excessively dropping;

a plurality of groups of welding seam adjusting mechanisms are further arranged on the inlet side of the welding host machine, are arranged among the plurality of groups of roller supporting mechanisms at intervals and are used for driving the welded pipe to rotate in the radial direction, so that the position of a groove of the welded pipe is adjusted, and the position of a welding seam is ensured to face upwards; the welding seam adjusting mechanism comprises a mounting seat 44, a lifting frame 45 is arranged above the mounting seat 44, a third guide rod 46 which is bilaterally symmetrical is arranged on the lower surface of the lifting frame 45, a guide groove 47 corresponding to the third guide rod 46 is arranged on the mounting seat 44, a first hydraulic cylinder 48 is arranged on the upper surface of the mounting seat 44, the telescopic rod of the first hydraulic cylinder 48 is hinged with the lower surface of the lifting frame 45, two adjusting rollers 49 are arranged on the upper surface of the lifting frame 45 side by side, an adjusting driven chain wheel 50 is arranged on the mounting shaft of one of the adjusting rollers 49, the adjusting driven chain wheel 50 is connected with an adjusting main chain wheel 52 through an adjusting chain 51, the adjusting main chain wheel 52 is mounted on the output shaft of an adjusting motor 53, the adjusting motor 53 is arranged on the lifting frame 45, and the adjusting rollers 49 are indirectly driven to rotate through the adjusting motor 53, finally, the welded pipe blank is driven to rotate, and the adjustment of the position of the welding seam of the welded pipe blank is realized;

the welding host comprises a base 1, a fixed frame 2 is fixedly arranged on the upper surface of the base 1, a rack 3 is arranged on the front side of the fixed frame 2, inclined limiting strips 4 are arranged on the left and right sides of the contact surface of the fixed frame 2 and the rack 3, two inclined limiting strips 4 jointly form a dovetail block, limiting inclined blocks 5 corresponding to the inclined limiting strips 4 are arranged on the left and right sides of the contact surface of the rack 3 and the fixed frame 2, two limiting inclined blocks 5 jointly form a dovetail groove, the inclined limiting strips 4 and the limiting inclined blocks 5 are mutually matched to realize the limiting of the rack 3 when the rack 3 slides up and down along the fixed frame 2, two hydraulic cylinders 6 are arranged on the left and right sides of the lower surface of the rack 3, a three-number hydraulic cylinder 7 is arranged in the middle of the lower surface of the rack 3, and the cylinder bodies of the two-number hydraulic cylinders 6 and the three-number hydraulic cylinder 7 are fixedly connected on the base 1, the movable ends of the second hydraulic cylinder 6 and the third hydraulic cylinder 7 are connected with the lower surface of the frame 3, first guide holes 54 are arranged on the left side and the right side of the lower surface of the frame 3, limiting holes 55 are arranged on the upper portions of the first guide holes 54, first guide rods 56 are arranged in the first guide holes 54, first limiting blocks 57 are fixedly connected to the upper ends of the first guide rods 56, the first limiting blocks 57 are positioned in the limiting holes 55, two guide cylinder bodies 58 are arranged on the upper surface of the base 1, the two guide cylinder bodies 58 correspond to the two first guide holes 54 one by one, the lower ends of the first guide rods 56 extend into the guide cylinder bodies 58 and are connected with second limiting blocks 59, a machining through hole 8 which penetrates through the front and the rear is arranged in the middle of the frame 3, fixed circular rings 9 are arranged on the front side and the rear side of the frame 3, the circle center of each fixed circular ring 9 is positioned on the axis of the machining through hole 8, a plurality of rounding mechanisms are uniformly arranged in the processing through hole 8 in a circumferential manner and comprise two connecting rods 10, the lower ends of the two connecting rods 10 are jointly connected with an installation groove body 11, each connecting rod 10 comprises a shell 1001, a fourth hydraulic cylinder 1002 is arranged in the shell 1001, the movable end of the fourth hydraulic cylinder 1002 is hinged to the installation groove body 11, a second guide rod 1003 is further arranged in the shell 1001 in a sliding manner, the fixed end of the second guide rod 1003 is fixedly connected with the installation groove body 11, a plurality of sliding wheels 12 are arranged in the installation groove body 11 so as to press welding pipe blanks through the sliding wheels 12, a transmission shaft 13 is further arranged between the two connecting rods 10 and is positioned at the middle lower part of the connecting rod 10, one end of the transmission shaft 13 is connected with an output shaft of a transmission motor 14, and the transmission motor 14 is arranged on the connecting rod 10, the transmission shaft 13 is provided with two gears 15, the two gears 15 correspond to two fixed rings 9 one by one, an arc-shaped rack 16 corresponding to the gears 15 is arranged on the inner annular surface of the fixed ring 9, the middle part of the connecting rod 10 is provided with a fixed shaft 17, the fixed shaft 17 is provided with a roller 18 through a bearing, the fixed ring 9 is provided with a rolling groove 19 corresponding to the roller 18 to limit the rounding mechanism, the upper part of the connecting rod 10 is provided with a locking hydraulic cylinder 20, the outer annular surface of the fixed ring 9 is provided with a first groove 21, a locking head of the locking hydraulic cylinder 20 is arranged in the first groove 21 to lock the rounding mechanism when needed, the top of the front side of the frame 3 is fixedly provided with a mounting plate 22, the mounting plate 22 is provided with a lifting rod 23 upwards, the telescopic rod 23 is an electric telescopic rod, a guide plate 24 is fixedly arranged at the movable end of the telescopic rod 23, the guide plate 24 is used for being inserted into a welded pipe slope to ensure the accuracy of a welding position, a lead screw lifting mechanism 25 is arranged on one vertical inner side wall of the fixing frame 2, a cross rod 26 is arranged on a sliding block of the lead screw lifting mechanism 25, and a welding head 27 is arranged at the end part of the cross rod 26 and used for welding a welded pipe blank.

A thick-wall metal straight welded pipe welding line automatic alignment rapid welding method comprises the following steps: placing a welded pipe blank on a roller supporting mechanism at the inlet side of a welding host machine, supporting the welded pipe blank through a supporting roller 30, then starting a roller motor 29 and a chain wheel motor 36, wherein the roller motor 29 drives the supporting roller 30 to rotate, the chain wheel motor 36 drives a roller conveying chain 35 to move, the welded pipe blank is conveyed to a processing position under the combined action of the supporting roller 30 and the roller conveying chain 35, in the conveying process, an adjusting motor 53 in a welding seam adjusting mechanism drives an adjusting roller 49 to rotate through an adjusting main chain wheel 52, an adjusting chain 51 and an adjusting auxiliary chain wheel 50, and the welded pipe blank radially rotates under the action of the adjusting roller 49 to realize the adjustment of the welding seam position of the welded pipe blank; then under the action of a second hydraulic cylinder 6 and a third hydraulic cylinder 7, the height of the frame 3 is adjusted to enable the circle center of the processing through hole 8 and the circle center of the welding pipe blank to be positioned on the same horizontal line, a telescopic rod 23 is lifted to drive a guide plate 24 to lift, the guide plate 24 is inserted into the slope of the welding pipe, a transmission motor 14 drives a gear 15 to rotate on an arc-shaped rack 16 on a fixed ring 9 through a transmission shaft 13, so that the position of a rounding mechanism is adjusted, after the position is adjusted, a locking hydraulic cylinder 20 retracts to fix the position of the rounding mechanism, then a fourth hydraulic cylinder 1002 extends and retracts to adjust the position of a sliding wheel 12, so that the sliding wheel 12 is pressed on the outer surface of the welding pipe blank, the processing roundness of the welding pipe blank is ensured, meanwhile, the welding port of the welding pipe blank can be perfectly welded, a lead screw lifting mechanism 25 drives a welding head 27 to adjust the height position, and enable the welding head 27 to weld the passing welding material, and the welded pipe after welding is sent out through a roller supporting mechanism on the outlet side of the welding host machine.

While there have been shown and described what are at present considered to be the essential features and advantages of the invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.