CN115780958A

CN115780958A - Automatic welding continuous production line

Info

Publication number: CN115780958A
Application number: CN202211521200.2A
Authority: CN
Inventors: 张亚明; 刘爱社; 祝秀军
Original assignee: Solareast Holdings Co Ltd
Current assignee: Solareast Holdings Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-14
Anticipated expiration: 2042-11-30
Also published as: CN115780958B

Abstract

The invention relates to an automatic welding continuous production line, which comprises a plurality of conveying plates which circularly move on a pipe fitting conveying platform. The main pipe clamping jaw device and the jackscrew device of the pipe head welding device are matched, the clamping main pipe is suspended in the air and the rotary driving device enables the pipe body to rotate circumferentially at a constant speed, the main pipe welding mechanism and the main pipe wire feeding mechanism are matched to ensure that welding seams are welded uniformly, and the girth welding quality is high. When the branch pipe welding system welds a branch pipe, the servo motor and the servo module are matched to complete the opposite movement and the accurate positioning of the branch pipe welding rack, and the stepping limiting device sequentially realizes the welding of a plurality of groups of branch pipe welding seams and is suitable for the girth welding of pipe body and branch pipes with different lengths. The branch pipe wire feeding mechanism automatically feeds the wires at a constant speed, the welding speed is effectively matched, the overall temperature of the pipe after welding rises, the pipe transfer device automatically transfers the pipe, the labor is saved, the automation degree is high, the transfer efficiency is high, the transfer is safe, the finished products are automatically stored in a centralized manner, the cleanness of the pipe body is guaranteed, and the pipe transfer device is convenient to use.

Description

Automatic welding continuous production line

Technical Field

The invention relates to the technical field of automatic welding forming devices, in particular to an automatic welding continuous production line.

Background

In the heat utilization of solar energy, the key is to convert the radiation energy of the sun into heat energy, and the solar energy must be concentrated by means of a method because the solar energy is relatively dispersed. Therefore, solar collectors are a key part of various solar devices.

The runner of solar collector core board includes sprue and runner, and the sprue is for being responsible for, and runner utilizes a plurality of and the perpendicular branch pipe that sets up of being responsible for, is responsible for both ends and needs the welding tube head, is responsible for and all is equipped with the branch pipe along the degree direction, is responsible for and needs to weld in proper order with the branch pipe, and when being responsible for and the hoop welding between the tube head, the body is long and thin, does not well accomplish simultaneously and supports and at the uniform velocity rotatory.

Moreover, the circumferential weld number of branch pipe and the person in charge butt joint is many, usually the manual work accomplish the back with branch pipe and the person in charge circumferential weld upper portion, need overturn to the opposite side and continue welding remaining second half circumferential weld, in welding process, because the interval space between branch pipe and the branch pipe is limited, welding wire and welder can not complete the circle welding in limited space among the welding process, cause the welding seam welding quality to differ, defects such as gas pocket appear easily in the welding seam, the welding seam quality is poor. After welding, the pipe fitting is heated and heated, manual transfer can be realized only by cooling in the air, the transfer of the pipe fitting consumes time and labor, in the batch industrial production process, the manual investment is large, a large amount of time is wasted, and the production efficiency is extremely low.

Consequently, in order to reduce artifical input, accurate location cooperation shortens welded time, improves the welding seam quality, effectively prevents that the tube head and the branch pipe of body from taking place the dislocation in welding process, guarantees the welding quality of welding seam, provides an automatic weld continuous production line.

Disclosure of Invention

The invention aims to provide an automatic welding continuous production line to solve the problems in the background technology, and the automatic welding continuous production line has the advantages of automatic feeding, automatic transfer and blanking by using mechanical transmission after welding a pipe head and a branch pipe in sequence, and storage.

In order to achieve the purpose, the invention provides the following technical scheme: an automatic welding continuous production line comprises a pipe fitting transmission platform, wherein a plurality of transmission plates are arranged on the pipe fitting transmission platform, the transmission plates move along the direction of the pipe fitting transmission platform, a plurality of pipe fitting placement frames are arranged on the transmission plates at equal intervals along the length direction, a pipe fitting placement groove is formed in the upper portion of each pipe fitting placement frame, two ends of the pipe fitting transmission platform are respectively arranged as a pipe fitting feeding portion and a pipe fitting discharging portion, a pipe head welding device and a branch pipe welding system are sequentially arranged on the pipe fitting transmission platform between the pipe fitting feeding portion and the pipe fitting discharging portion, the branch pipe welding system comprises branch pipe welding devices which symmetrically and synchronously work along two sides of the pipe fitting transmission platform, a stepping limiting device for controlling the stepping movement of the transmission plates is arranged on the pipe fitting transmission platform between the two branch pipe welding devices, and a layering mechanism for fixing a pipe body is arranged above the stepping limiting device; step-by-step stop device makes every branch pipe welding seam all welded in proper order on being responsible for, and the branch pipe welding system need not be unanimous with being responsible for length to can weld the branch pipe welding seam welding that different length were responsible for.

The stepping limiting device comprises a driving device for driving the conveying plate to move in a stepping mode, the driving device comprises a lead screw motor arranged along the length direction of the pipe fitting conveying platform, two limiting guide rails arranged in parallel are arranged on two sides of the lead screw motor, a limiting slide seat is arranged at the shaft end of the lead screw motor and is in sliding fit with the two limiting guide rails, the limiting slide seat slides in a reciprocating mode along the limiting guide rails, a limiting pin shaft is arranged on the top surface of the limiting slide seat, and a positioning hole in inserting fit with the limiting pin shaft is formed in the conveying plate; through lead screw motor drive for the conveying plate drives and is responsible for, and every 5 branch pipe welding seams are a set of welding, and 5 branch pipe welding seams weld in proper order, and the location is accurate, is suitable for the welding of each branch pipe welding seam on the person in charge of various different length.

Two branch pipe welding set all include the branch pipe welding frame, and branch pipe welding frame bottom is equipped with the sliding seat, and the cooperation of sliding seat bottom is equipped with two and pipe fitting transmission platform transmission direction vertically sliding guide, and pipe fitting transmission platform one side is kept away from to the sliding seat is equipped with the servo motor of drive sliding seat to pipe fitting transmission platform direction reciprocating motion and the servo module of the accurate location of drive sliding seat. The servo module drives the branch pipe welding rack to be accurately positioned.

The top-down of branch pipe welding frame is equipped with branch pipe thread feeding mechanism and branch pipe welding mechanism, branch pipe welding mechanism includes the welder backup pad, the welder backup pad is located pipe fitting transmission platform one side and equidistant first driving motor who is equipped with a plurality of bull welder and drives bull welder synchronous revolution, every bull welder all installs in the welder backup pad through rotary joint, each rotary joint synchronous operation of first driving motor drive, still be equipped with a plurality of gas mixture interface in the welder backup pad, every gas mixture interface all sets up with bull welder one-to-one, the gas mixture interface all is connected with the gas mixture pipe that is linked together with gas supply device. The branch pipe wire feeding mechanism is matched with the branch pipe welding mechanism, and the branch pipe welding efficiency is high.

Preferably, the branch pipe wire feeding mechanism comprises a plurality of wire discs and a turnover plate which are arranged at the upper part of the branch pipe welding rack, one side of the turnover plate is provided with a turnover motor for driving the turnover plate to rotate, two telescopic cylinders are symmetrically arranged on the turnover plate, the lower ends of telescopic rods of the two telescopic cylinders are provided with a synchronization plate, the synchronization plate is provided with a plurality of welding wire heads at equal intervals, each welding wire head is respectively arranged corresponding to a multi-head welding gun, the multi-head welding gun comprises three claw-shaped welding gun heads which are uniformly distributed along a circle of a virtual circle, flames of the welding gun heads are concentrated at the positions of a branch pipe and a main pipe, and the welding wire heads are positioned above the positions of the branch pipe and the main pipe and avoid the rotating space of the multi-head welding gun; the synchronous plate rotates in the circumferential direction by turning the turning plate, so that the space of the motion stroke is saved.

Two wire feeding wheels which rotate oppositely are arranged on one side of each wire reel, a gap through which a welding wire passes is formed between the wire feeding wheels, a plurality of wire guide pipes are arranged on the welding wire output side of each wire feeding wheel, the tail end of each wire guide pipe is connected with a corresponding welding wire head, and the welding wire respectively passes through the wire guide pipes and passes out of the welding wire heads; the wire is automatically fed at a constant speed, the wire feeding speed is matched with the welding speed, and the automation degree is high.

The layering mechanism comprises a layering beam driven to lift through a layering cylinder, a plurality of L-shaped layering are uniformly distributed on the lower side of the layering beam, and a pressing groove matched with the outer wall of the pipe body is formed in the lower portion of each L-shaped layering. The layering mechanism is used for fixing the pipe body in the circumferential direction, so that the pipe body is effectively prevented from shifting in the welding process.

More preferably, the tube head welding device comprises a lifting frame arranged at the lower part of the tube head welding rack, a positioning guide rail is arranged on the lifting frame and faces one side of the pipe fitting transmission platform, a main pipe fixing device is arranged on the positioning guide rail and comprises a plurality of main pipe clamping jaw devices for clamping a main pipe, and the main pipe clamping jaw devices are arranged along the length direction of the positioning guide rail; the two ends of the positioning guide rail are provided with the jackscrew devices which are arranged oppositely, the jackscrew devices at the two ends move oppositely to be matched with the jacking pipe head, the main pipe clamping jaw device is matched with the jackscrew device to suspend the main pipe, and the main pipe body can rotate circumferentially.

A rotary driving device for driving the main pipe to rotate circumferentially is arranged on one main pipe clamping jaw device, a main pipe welding mechanism and a main pipe wire feeding mechanism are symmetrically arranged at two ends of the positioning guide rail, smoke discharge bins are arranged at the tops of the pipe head welding rack and the branch pipe welding rack, and smoke discharge pipes are arranged above the smoke discharge bins; be responsible for the tube head both ends and weld simultaneously, save time, harmful gas who produces in welding process is collected by the cigarette storehouse of discharging in addition, and the rethread is discharged the pipe and is arranged appointed space, has guaranteed workshop's clean environment.

Be located and be equipped with tube head welding stop device on the pipe fitting transmission platform of tube head welding set position department, tube head welding stop device is equipped with the vertical location telescopic link that upwards sets up including setting up the spacing servo motor in conveying board below on the spacing servo motor, and the location telescopic link corresponds the cooperation with the locating hole shape position on the conveying board. The locating plate is put by automatic limit, makes the accurate cooperation of each part of being responsible for with tube head welding set.

More preferably, be responsible for the clamping jaw device and include the locating rack, the locating rack downside is equipped with reciprocating cylinder and clamping jaw subassembly, and the clamping jaw subassembly includes two first arc clamping jaw and the second arc clamping jaw that set up and the indent in opposite directions, and first arc clamping jaw links to each other with the locating rack front side is fixed, and the reciprocating cylinder level sets up, and reciprocating cylinder drive second arc clamping jaw is close to or keeps away from first arc clamping jaw, all be equipped with the centre gripping running roller that sets up from top to bottom on the opposite face of first arc clamping jaw and second arc clamping jaw, four centre gripping running rollers form the centre gripping space of being responsible for of centre gripping. The four clamping rollers not only clamp the pipe body, but also can enable the pipe body to move in the clamping space in the circumferential direction.

More preferably, the rotary driving device comprises a supporting frame connected with a main pipe clamping jaw device positioning frame, a supporting cylinder 271 for driving the supporting frame to move vertically is arranged at the top of the supporting frame, two driven wheels which move in the same direction are arranged at the lower part of the supporting frame, a main pipe placing part is arranged in a gap between the two driven wheels, a driving wheel which drives the driven wheels to rotate is arranged at the upper part of the supporting frame, and the driving wheel is connected with a driving motor. Two from taking place the friction with the body from the driving wheel, the equidirectional circumferential motion of automatic drive body, the body is at the uniform velocity rotatory, guarantees that the welding seam welds evenly, and welding quality is high.

More preferably, the jackscrew device sets up the jackscrew cylinder on crane top side including the symmetry, and the telescopic shaft of two jackscrew cylinders sets up on the back, and the telescopic shaft tip of jackscrew cylinder is equipped with the jackscrew slider, and the jackscrew slider is equipped with the hookup seat with location guide rail sliding fit, jackscrew slider lower part, and the jackscrew slider is equipped with the conical head that withstands body both ends tube head through the hookup seat. The jackscrew device realizes the circumferential displacement of body, guarantees simultaneously that the body can be at the rotation in circumference.

More preferably, be responsible for welding mechanism and include that upper portion sets up to the welding direction slope the person in charge welds the frame, be equipped with the slope slide rail that sets up along its length direction on being responsible for welding the frame, be equipped with the welding slider on the slope slide rail, the welding slider passes through the drive of welding cylinder, is equipped with the deflector on the welding slider, the level is fixed with welder on the deflector, welder includes two a set of welding gun heads that are the Y type setting, same group welding gun head is located the jackscrew device top of homonymy all the time, the welder other end links to each other with air feeder through mixing gas pipe. The welding cylinder drives the welding slide block to drive the welding gun to move, and the welding gun is used for welding in the welding process

More preferably, be responsible for wire drive feed unit including being responsible for and send a cylinder, be responsible for and send a cylinder telescopic shaft lower extreme to be equipped with cylinder axial vertically's clamping jaw, the centre gripping is equipped with tube head welding wire head in the clamping jaw, be responsible for wire drive feed unit and still include tube head wire reel, and tube head wire reel one side is equipped with a set of wire feeding wheel of rotation in opposite directions, and two wire feeding wheels rotate in opposite directions and drive the welding wire output, and the welding wire passes the seal wire pipe and wears out from the tube head welding wire head. The clamping jaw clamps the wire guide pipe, the direction and the height of the welding wire head are adjustable, and the welding wire head is convenient to replace.

More preferably, the pipe fitting conveying platform comprises an upper conveying layer and a lower backflow layer which are arranged up and down, the conveying plate moves to the upper conveying layer through the pipe fitting feeding part, the conveying plate sequentially passes through the pipe head welding device and the branch pipe welding device to complete welding forming of the pipe head and the branch pipe, and the conveying plate continuously moves to the pipe fitting discharging part; the pipe fitting material loading portion and the pipe fitting material unloading portion both comprise lifting devices, each lifting device comprises a lifting chain and a lifting plate, the lifting plates reach upper limit positions and are in butt joint with the upper transmission layer, the lifting plates reach lower limit positions and are in butt joint with the lower backflow layer, and a pipe fitting transfer device is arranged above the pipe fitting material unloading portion. The transmission plate is recycled in the upper transmission layer and the lower return process layer.

More preferably, a pipe storage part is arranged on one side of the pipe unloading part, the pipe transfer device comprises a transfer support frame, two parallel transfer guide rails are arranged at the top of the transfer support frame, and the transfer guide rails are arranged above the pipe unloading part and the pipe storage part and are in cross arrangement with the pipe transmission platform;

a transfer frame which is driven by a transfer motor to move along the transfer guide rail is arranged on the transfer guide rail, a lifting cross rod is arranged below the transfer frame, the lifting cross rod is connected with a transfer lifting cylinder fixed on the transfer frame, and a plurality of transfer clamping jaws are uniformly distributed on the lifting cross rod; the pipe fitting rises at the whole temperature after the welding, and automatic transfer pipe fitting prevents effectively that artifical transfer in-process from to the scald etc. of human body, and degree of automation is high, and transfer efficiency is high.

The pipe fitting storage portion is equipped with the finished product and stores the platform, and the finished product is stored and is equipped with a plurality of triangle-shaped slope on the mesa that the platform is close to pipe fitting portion of unloading one side, and the finished product is stored and is equipped with one row of spacing stand on the mesa that the platform kept away from pipe fitting portion of unloading one side. A transfer frame which is driven by a transfer motor to move along the transfer guide rail is arranged on the transfer guide rail, a lifting cross rod is arranged below the transfer frame, the lifting cross rod is connected with a transfer lifting cylinder fixed on the transfer frame, and a plurality of transfer clamping jaws are uniformly distributed on the lifting cross rod;

the pipe fitting storage portion is equipped with the finished product and stores the platform, and the finished product is stored and is equipped with a plurality of triangle-shaped slope on the mesa that the platform is close to pipe fitting portion of unloading one side, and the finished product is stored and is equipped with one row of spacing stand on the mesa that the platform kept away from pipe fitting portion of unloading one side. The finished product is automatically stored in a centralized manner, so that the cleanness of the pipe body is guaranteed, and the pipe body is convenient to transfer during use.

When the conveying plate is at the loading part of the pipe fitting, the main pipe of the heat pipe is manually placed in the pipe fitting placing groove, each branch pipe and the pipe head are welded on the branch pipe in a spot mode, and welding forming of the welding line of the pipe head and the welding line of the branch pipe is achieved after the whole welding line is welded. The conveying plate moves to the upper conveying layer through the pipe fitting feeding part, the conveying plate drives the heat pipe to sequentially pass through the pipe head welding device and the branch pipe welding device, welding forming of the pipe head and the branch pipe is completed, when the conveying plate enters the pipe head welding rack position, the lifting motor does retraction movement, the lifting frame rises, the whole part on the lifting frame is driven to rise, and the pipe body placed on the conveying plate is avoided.

When the conveying plate moves to the position of the tube head welding device, the positioning telescopic rod of the limiting servo motor moves vertically upwards, the positioning telescopic rod just extends out of the positioning hole of the conveying plate, and the conveying plate is temporarily in a relative static state.

When the conveying plate is limited by the tube head welding limiting device and is not moved, and a tube head welding procedure is carried out, the lifting motor does stretching movement, and the lifting frame descends to drive the whole part on the lifting frame to descend.

The main pipe clamping jaw device can slide to any position of the positioning guide rail as required to clamp pipes with different lengths. The locating plate is spacing to be fixed when tube head welding set position department, and the crane drives the locating rack and descends in step, and the decline stops when being located same high position with the clamping jaw subassembly with being responsible for, and first arc clamping jaw and second arc clamping jaw are in the state of keeping away from, and first arc clamping jaw is motionless, and reciprocating cylinder starts, drives second arc clamping jaw and is close to first arc clamping jaw, holds the body until four centre gripping running rollers centre gripping.

After the pipe body is clamped by the main pipe clamping jaw device, the lifting motor retracts, the lifting frame ascends to drive the whole part on the lifting frame to ascend, and the main pipe clamping jaw device ascends and suspends the pipe body after clamping.

The two ends of the positioning guide rail are provided with the jackscrew devices which are arranged in opposite directions, the jackscrew devices synchronously descend along with the lifting frame, and after the pipe body is circumferentially clamped and fixed by the main pipe clamping jaw device, the jackscrew devices at the two ends move in opposite directions to match with and tightly push the pipe head.

The pipe body is fixed in the circumferential direction and the axial direction, one main pipe clamping jaw device is provided with a rotary driving device for driving the main pipe to rotate in the circumferential direction, the vertical motor shaft stretches out, and the two driven wheels descend to the outer wall of the pipe body and are in contact fit with the outer wall of the pipe body. The driving motor starts to drive the driving wheel to rotate, the chain drives the two driven wheels to rotate, the two driven wheels and the outer wall of the pipe body rub to drive the pipe body to rotate along the circumferential direction of one direction.

Before welding, the telescopic shaft of the welding cylinder is in a contraction state, the welding slide block is positioned at the top of the inclined slide rail, after the gas supply device is opened, mixed gas is discharged from the welding gun head through a mixed gas pipe, manual ignition is carried out, and the welding gun sprays high-temperature flame. Starting the welding cylinder, enabling the telescopic shaft of the welding cylinder to extend, enabling the welding slide block to move downwards and backwards until the flame of one group of welding gun heads is opposite to the welding seam of the pipe head, and stopping the welding cylinder; the flame of the welding gun head is over against the welding seam of the tube head for heating.

The telescopic shaft of the wire feeding cylinder does stretching movement to drive the clamping jaw to move downwards, the clamping jaw drives the welding wire head of the tube head to move downwards until the welding wire head is positioned right above a welding seam of the tube head and positioned at a position where flame of the welding gun head is heated, the flame of the welding gun head melts the welding wire to weld the tube head, the tube body is driven by the rotary driving device to rotate for a circle, and the welding seam of the tube head is welded for a circle.

After the welding of the tube head welding seam is finished, the telescopic shaft of the wire feeding cylinder retracts to drive the clamping jaw to move upwards, the clamping jaw drives the welding wire head to move upwards, the welding wire head is moved away from the welded tube head welding seam, then the welding cylinder is started, the telescopic shaft of the welding cylinder retracts to move upwards, the welding slide block moves forwards upwards until the flame of a group of welding gun heads is completely moved away from the tube head welding seam, and the telescopic shaft is in an initial contraction state when the welding cylinder stops moving. Then the telescopic shafts of the two jackscrew cylinders of the jackscrew device do extension movement, the telescopic shafts of the jackscrew cylinders drive the jackscrew sliding blocks to move, and the jackscrew sliding blocks drive the connecting seats and the conical heads to synchronously move away from the two end parts of the pipe body.

The crane drives the locating rack to descend synchronously until the main pipe is completely placed on the pipe fitting placing groove, the first arc-shaped clamping jaw is fixed, the reciprocating cylinder is started to drive the second arc-shaped clamping jaw to be far away from the first arc-shaped clamping jaw, and the pipe body is loosened until the four clamping rollers. The lifting motor is retracted, the lifting frame is lifted, the whole part on the lifting frame is driven to ascend, the pipe body in the pipe fitting placing groove is completely removed, and welding of the pipe body pipe head on the next conveying plate is waited.

And the positioning telescopic rod of the limiting servo motor vertically moves downwards, the positioning telescopic rod just withdraws from the positioning hole of the conveying plate, and the conveying plate continues to move towards the direction of the branch pipe welding system along the upper conveying layer.

When the conveying plate moves to the position of the branch pipe welding system, the limiting pin shaft is inserted into the positioning hole, and the relative position of the conveying plate is fixed. A layering mechanism for fixing the tube body is arranged above the stepping limiting device; the layering mechanism includes layering crossbeam 802 that drives through the layering cylinder and goes up and down, and layering crossbeam downside equipartition is equipped with 8L type layering, and every L type layering lower part is equipped with the indent that coincide with the body outer wall. The pressing strip cross beam moves downwards, and the L-shaped pressing strip positioned on the rear side of the pressing strip cross beam presses the pipe body of the main pipe.

The servo motor starts to drive the sliding seats to move in opposite directions, and when the sliding seats move to a preset welding position, the servo module starts to finely adjust the position of the sliding seats and accurately position the position of the branch pipe welding rack.

Branch pipe welding frame top-down is equipped with branch pipe thread feeding mechanism and branch pipe welding mechanism, branch pipe welding mechanism includes the welder backup pad, and the welder backup pad is located pipe fitting transmission platform one side and equidistant 5 bull welder and the first driving motor who drives bull welder synchronous revolution that is equipped with, and every bull welder all installs in the welder backup pad through rotary joint, and 5 bull welders are just to being responsible for last 5 branch pipe welding seams, and each rotary joint synchronous operation of first driving motor start drive. The gas supply device supplies the mixed gas to the multi-head welding gun through the mixed gas pipe from the mixed gas interface.

And then, starting a turnover motor of the branch pipe wire feeding mechanism, moving the free end of the turnover plate to the direction close to the pipe fitting conveying platform, and pausing the turnover motor when the turnover plate is turned to an inclined angle just opposite to the welding line of the branch pipe. The telescopic cylinder starts, drives the synchronous plate to move towards the direction close to the welding seam of the branch pipe along the surface of the turnover plate, 5 welding wire heads are arranged on the synchronous plate at equal intervals, each welding wire head corresponds to a multi-head welding gun respectively, and when the welding wire head is right above the welding seam of the branch pipe, the telescopic cylinder stops working. The multi-head welding gun comprises three claw-shaped welding gun heads which are uniformly distributed along the circumference of a virtual circle, each welding gun head is manually ignited, the flame of each welding gun head is concentrated at the position of a welding seam between a branch pipe and a main pipe, and the welding seams of the branch pipes which are symmetrical on two sides of the main pipe are welded at the same time. The welding wire head is positioned above the position of a welding seam between the branch pipe and the main pipe and avoids the rotating space of the multi-head welding gun;

in the welding process, the welding wire is continuously melted and then shortened, the wire feeding wheel is started, and the welding wire on the wire disc is driven to move towards the wire guide pipe and continuously extends out of the head of the welding wire. The welding wire is continuously heated and melted by flame sprayed by the welding gun heads, the welding wire is dripped onto the branch pipe welding seam, and the three claw-shaped welding gun heads intermittently heat the welding wire liquid for one circle on the branch pipe welding seam in the circumferential rotation process until the welding wire liquid is fully distributed on the branch pipe welding seam for one circle.

The pressing strip beam moves upwards, and the L-shaped pressing strip positioned at the rear side of the pressing strip beam moves away from the pipe body of the main pipe. Then a screw motor of the stepping limiting device is started, a screw motor shaft drives a limiting sliding seat to move along a limiting guide rail to the moving direction of the conveying plate, the conveying plate is driven to continue to move, a first group of 5 branch pipe welding seams on the pipe body are moved away from 5 multi-head welding guns, an adjacent next group of 5 branch pipe welding seams are respectively opposite to the 5 multi-head welding guns, the screw motor stops moving, and the relative position of the conveying plate is fixed. The pressing strip cross beam moves downwards, and the L-shaped pressing strip positioned at the rear side of the pressing strip cross beam presses the pipe body of the main pipe.

The telescopic cylinder is started again, the synchronous plate is driven to move towards the direction close to the welding line of the branch pipe along the surface of the turnover plate, the 5 welding wire heads are respectively arranged corresponding to the multi-head welding gun, and when the welding wire heads are over the welding line of the branch pipe, the telescopic cylinder stops working. The branch pipe welding mechanism continues to weld the second set of 5 branch pipe welds. And sequentially welding all branch pipe welding seams according to the procedures.

The top parts of the pipe head welding machine frame and the branch pipe welding machine frame are both provided with a smoke exhaust bin, and a smoke exhaust pipe is arranged above the smoke exhaust bin; toxic smoke generated in the welding process is collected by the smoke discharging bin and is fixedly discharged through the smoke discharging pipe.

After all the branch pipe weld joints are welded, the telescopic cylinder is started to drive the synchronous plate to move towards the direction away from the branch pipe weld joints along the surface of the turnover plate, and the welding wire head moves away from the position of the multi-head welding gun. Then, the pressing strip beam moves upwards, and the L-shaped pressing strip positioned on the rear side of the pressing strip beam moves away from the pipe body of the main pipe.

The transfer plate continues to move to the pipe fitting discharge part; the pipe fitting material loading portion and the pipe fitting material unloading portion all comprise lifting devices, each lifting device comprises a lifting chain and a lifting plate, the lifting plates reach upper limit positions and are in butt joint with an upper transmission layer, the lifting plates reach lower limit positions and are in butt joint with a lower backflow layer, and when the conveying plates continue to move to the pipe fitting material unloading portion, the conveying plates are limited by a frame of the pipe fitting material unloading portion, and the upper transmission layer located in the pipe fitting material unloading portion is not moved.

The transfer support frame is initially located pipe fitting transmission platform top, and the transfer lift cylinder starts, and the transfer lift cylinder drives the lift horizontal pole and moves down along vertical guide rod, and the body is held to the transfer clamping jaw, and the reverse start of transfer lift cylinder shifts the lift cylinder and drives the lift horizontal pole and move up along vertical guide rod, with the unsettled clamp of body. The transfer motor drives the transfer frame to move to the pipe storage part along the transfer guide rail, and the lifting cross rod moves synchronously along with the transfer frame.

When the pipe body is rotated to the upper side of the triangular slope, the transfer lifting cylinder is started in the positive direction, the transfer lifting cylinder drives the lifting cross rod to move downwards along the vertical guide rod to be close to the surface of the triangular slope, and after the transfer clamping jaw is loosened, the pipe body rolls down along the triangular slope and continues to roll on the finished product storage platform under the action of inertia force. A row of limiting upright columns are arranged on the table top on one side, away from the pipe fitting discharging part, of the finished product storage platform. The body is finally stopped spacing by spacing stand, piles up on the finished product storage platform.

When the pipe fitting unloading part is clamped and transferred by the transfer clamping jaws after being welded and formed, the empty conveying plate cup lifting plate is driven by the lifting chain to descend to a lower limit position to be in butt joint with the lower backflow layer, the empty conveying plate cup lifting plate is transferred onto the lifting plate of the pipe fitting loading part from the lower backflow layer, and the empty conveying plate cup lifting plate is driven by the lifting plate to ascend to the pipe fitting loading part at the height of the upper conveying layer to load the pipe fitting.

Compared with the prior art, the invention has the beneficial effects that: the plurality of conveying plates circularly and repeatedly move between the upper conveying layer and the lower backflow layer as well as between the pipe fitting feeding part and the pipe fitting discharging part at the two ends. The pipe body firstly passes through the main pipe clamping jaw device and the jackscrew device of the pipe head welding device to be matched, the main pipe is automatically clamped in the axial direction and the circumferential direction, the main pipe is suspended and the rotary driving device is used for enabling the pipe body to rotate in the circumferential direction at a constant speed, the clamping jaw of the main pipe wire feeding device is used for clamping the wire guide pipe, the direction and the height of the welding wire head are adjustable, the welding wire head is convenient to replace, the main pipe welding mechanism and the main pipe wire feeding mechanism are matched to ensure that welding seams are welded uniformly, circular seams are welded thoroughly, and the welding quality of the pipe head is high.

The conveying plate continues to move to the branch pipe welding system, the servo motor and the servo module are matched to complete the opposite movement and the accurate positioning of the branch pipe welding rack, and the stepping limiting device sequentially achieves the welding of a plurality of groups of branch pipe welding lines and is suitable for pipe body branch pipe girth welding with different lengths. The pipe body is fixed in the circumference to the layering mechanism, effectively guarantees that the pipe body of different length does not take place to shift in welding process, and the branch pipe welding is efficient.

The turnover plate of the branch pipe wire feeding mechanism drives the synchronous plate to rotate circumferentially, so that the space of a movement stroke is saved. The wire is automatically fed at a constant speed, and the welding speed is effectively matched. The pipe fitting rises at welding back bulk temperature, and pipe fitting transfer device shifts the pipe fitting automatically, effectively prevents the scald etc. of artifical transfer in-process to the human body, and degree of automation is high, shifts efficiently, and the finished product is automatic to be accomplished and to concentrate the storage, guarantees the cleanness of body, the transfer when simultaneously making things convenient for the use.

Drawings

FIG. 1 is a general assembly schematic of the present invention;

FIG. 2 is a schematic structural diagram of a tube head welding device according to the present invention;

FIG. 3 is a schematic view of a partial structure of a master pipe clamping jaw apparatus of the present invention;

FIG. 4 is a schematic view of a partial structure of a screw driving device according to the present invention;

FIG. 5 is a schematic view of the main pipe welding mechanism and the main pipe wire feeding mechanism of the present invention;

FIG. 6 is a partial schematic view of a rotary drive apparatus according to the present invention;

FIG. 7 is a partial structural view of a two-side branch pipe welding apparatus according to the present invention;

FIG. 8 is a partial view of a side branch pipe welding apparatus according to the present invention;

FIG. 9 is a schematic view of a partial structure of a hold-down bar mechanism of the present invention;

figure 10 is a partial schematic view of the tube transfer device and product storage platform of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to the attached drawings 1-2, the automatic welding continuous production line comprises a pipe conveying platform 1, wherein a plurality of conveying plates 4 are arranged on the pipe conveying platform 1 and move along the direction of the pipe conveying platform, a plurality of pipe placing frames 401 are arranged on the conveying plates at equal intervals along the length direction, a pipe placing groove is formed in the upper portion of each pipe placing frame, a main pipe refers to a solar heat pipe, the heat pipe comprises a main pipe and a plurality of branch pipes uniformly arranged along the length direction of the main pipe, and the main pipe is placed on the pipe placing frames.

Two ends of the pipe conveying platform are respectively provided with a pipe feeding part 101 and a pipe discharging part 102, a pipe head welding device 2 and a branch pipe welding system are sequentially arranged on the pipe conveying platform between the pipe feeding part and the pipe discharging part, pipe heads at two ends of the main pipe are formed by welding and fixing, and the main pipe and each branch pipe are formed by welding and fixing. The pipe fitting transmission platform comprises an upper transmission layer and a lower backflow layer which are arranged from top to bottom, the conveying plate moves to the upper transmission layer through the pipe fitting feeding portion, when each empty conveying plate is in the pipe fitting feeding portion, a main pipe of the heat pipe is manually placed in the pipe fitting placing groove, each branch pipe and the pipe head are welded on the branch pipe in a spot mode, and welding forming of the welding line of the pipe head and the welding line of the branch pipe is waited.

The conveying plate drives the heat pipe to sequentially pass through the pipe head welding device 2 and the branch pipe welding device 3, the welding forming of the pipe head and the branch pipe is completed, the pipe head welding limiting device is arranged on a pipe fitting transmission platform located at the position of the pipe head welding device 2, the pipe head welding limiting device comprises a limiting servo motor arranged below the conveying plate, a vertical positioning telescopic rod arranged upwards is arranged on the limiting servo motor, and the positioning telescopic rod corresponds to and is matched with the shape and the position of a positioning hole in the conveying plate. When the conveying plate moves to the position of the tube head welding device, the positioning telescopic rod of the limiting servo motor moves vertically upwards, the positioning telescopic rod just extends out of the positioning hole of the conveying plate, and the conveying plate is temporarily in a relative static state.

Referring to the attached drawing 2, the tube head welding device 2 comprises a lifting frame arranged at the lower part of a tube head welding rack, lifting motors are symmetrically arranged at the upper part of the tube head welding rack, the lifting frame is synchronously driven by the two lifting motors to do lifting motion along the tube head welding rack, when a conveying plate enters or leaves the tube head welding rack, the lifting motors do retraction motion, the lifting frame rises to drive components on the lifting frame to rise integrally and avoid tubes placed on the conveying plate, when the conveying plate is limited by a tube head welding limiting device and a tube head welding procedure is carried out, the lifting motors do extension motion, the lifting frame descends to drive the components on the lifting frame to descend integrally.

A positioning guide rail 202 is arranged on one side of the lifting frame facing the pipe fitting conveying platform, a main pipe fixing device is arranged on the positioning guide rail 202 and comprises a plurality of main pipe clamping jaw devices 206 for clamping a main pipe, and the main pipe clamping jaw devices 206 are arranged along the length direction of the positioning guide rail; the main pipe clamping jaw device can slide to any position of the positioning guide rail as required to clamp pipes with different lengths.

Please refer to fig. 3, be responsible for clamping jaw device 206 and include the locating rack, the locating rack downside is equipped with reciprocating cylinder 263 and clamping jaw subassembly, the clamping jaw subassembly includes two first arc clamping jaw 261 and the second arc clamping jaw 262 that set up and indent in opposite directions, and first arc clamping jaw is fixed continuous with the locating rack front side, and the reciprocating cylinder level sets up, and reciprocating cylinder drive second arc clamping jaw is close to or keeps away from first arc clamping jaw, all be equipped with the centre gripping running roller 264 of two upper and lower settings on the opposite face of first arc clamping jaw and second arc clamping jaw, four centre gripping running rollers 264 form the centre gripping space of being responsible for of centre gripping. When 4 spacing fixes in tube head welding set position departments of locating plate, the crane drives the locating rack and descends in step, and the decline stops when being located same high position with the main pipe with clamping jaw subassembly, and first arc clamping jaw 261 and second arc clamping jaw 262 are in the state of keeping away from, and first arc clamping jaw is motionless, and reciprocating cylinder starts, drives the second arc clamping jaw and is close to first arc clamping jaw, holds the body up to four centre gripping running rollers centre gripping.

After the pipe body is clamped by the main pipe clamping jaw device 206, the lifting motor retracts, the lifting frame rises to drive the whole part on the lifting frame to rise, and the main pipe clamping jaw device 206 lifts and suspends the pipe body after clamping.

Referring to fig. 4, the two ends of the positioning guide rail are provided with the opposite jackscrew devices 205, the jackscrew devices 205 descend synchronously with the lifting frame, and after the main pipe clamping jaw device 206 clamps and fixes the pipe body circumferentially, the jackscrew devices at the two ends move oppositely to match with and tightly press the pipe head. The jackscrew device 205 includes that the symmetry sets up the jackscrew cylinder 251 on crane top side, the telescopic shaft of two jackscrew cylinders 251 sets up back of the body, the telescopic shaft of two jackscrew cylinders is the motion of returning back, the telescopic shaft tip of jackscrew cylinder is equipped with jackscrew slider 252, the telescopic shaft of jackscrew cylinder drives jackscrew slider 252, jackscrew slider and location guide rail sliding fit, the jackscrew slider is the endwise slip on the location guide rail, jackscrew slider lower part is equipped with coupling seat 253, the jackscrew slider is equipped with the conical head 254 of withstanding the pipe body both ends pipe head through the coupling seat, the connecting seat is synchronous with the conical head and moves in opposite directions, the pipe body is on same axis with the conical head, the pipe head is tight in top.

Referring to fig. 6, the pipe body is fixed in both circumferential and axial directions, one of the main pipe clamping jaw devices is provided with a rotation driving device 207 for driving the main pipe to rotate in circumferential direction, and the rotation driving device 207 includes a support frame connected to a positioning frame of the main pipe clamping jaw device. The supporting cylinder 271 for driving the supporting frame to vertically move is arranged at the top of the supporting frame, two driven wheels 275 moving in the same direction are arranged at the lower part of the supporting frame, a placing part is arranged in a gap between the two driven wheels 275, a driving wheel 274 for driving the driven wheels 275 to rotate is arranged at the upper part of the supporting frame, and the driving wheel is connected with a driving motor 273. The vertical motor shaft stretches out the motion, and two from the driving wheel decline to body outer wall department, with body outer wall contact cooperation. The action wheel is triangle-shaped with two from the driving wheel and arranges, and loops through the chain and drive rotatoryly, and driving motor starts, drives the action wheel rotation, and chain drive drives two from the driving wheel rotation, from the friction of driving wheel and body outer wall, and the drive body is along a direction circumference rotation.

Referring to fig. 5, a main welding mechanism 204 and a main wire feeding mechanism 203 are symmetrically disposed at two ends of the positioning guide rail 202, the main welding mechanism 204 includes a main welding frame, the upper portion of the main welding frame is inclined toward the welding direction, an inclined slide rail is disposed on the main welding frame along the length direction of the main welding frame, a welding slider is mounted on the inclined slide rail and driven by a welding cylinder 241, a guide plate 242 is disposed on the welding slider, a welding gun 243 is horizontally fixed on the guide plate, the welding gun includes two welding gun heads disposed in a Y shape, the welding gun heads of the same group are always located above the wire jacking devices on the same side, and the other end of the welding gun is connected to the gas supply device through a mixed gas pipe. Before welding, the telescopic shaft of the welding cylinder is in a contraction state, the welding slide block is positioned at the top of the inclined slide rail, after the gas supply device is opened, mixed gas is discharged from the welding gun head through a mixed gas pipe, manual ignition is carried out, and the welding gun sprays high-temperature flame. Starting a welding cylinder, enabling a telescopic shaft of the welding cylinder to extend, enabling a welding sliding block to move downwards and backwards until flames of a group of welding gun heads are opposite to a pipe head welding seam, and stopping the welding cylinder; the flame of the welding gun head is over against the welding seam of the tube head for heating.

Be responsible for wire feeding mechanism 203 including being responsible for and sending a cylinder 231, be responsible for and send a cylinder 231 telescopic shaft lower extreme to be equipped with cylinder axial vertically clamping jaw 232, the centre gripping is equipped with tube head welding wire head 233 in the clamping jaw, be responsible for wire feeding unit still includes tube head wire reel 234, and tube head wire reel 234 one side is equipped with a set of wire feeding wheel of rotation in opposite directions, and two wire feeding wheels are the output of rotatory drive welding wire in opposite directions, and the welding wire passes the wire guide pipe and wears out from tube head welding wire head 233. Send a cylinder telescopic shaft to be the stretching out motion, drive clamping jaw downstream, the clamping jaw drives tube head welding wire head downstream, just is located the position of welding gun head flame heating directly over the tube head welding seam until being located, and welding gun head flame melts the welding wire and carries out the tube head welding, and the body is at the rotatory a week of rotation drive device drive, and tube head welding seam welding a week is accomplished.

After the welding of the tube head welding seam is completed, the telescopic shaft of the wire feeding cylinder 231 of the main tube retracts to drive the clamping jaw to move upwards, the clamping jaw drives the welding wire head to move upwards, the welding wire head is moved away from the welded tube head welding seam, then the welding cylinder is started, the telescopic shaft of the welding cylinder retracts to move upwards, the welding slide block moves forwards upwards until the flame of one group of welding gun heads is completely moved away from the tube head welding seam, and the telescopic shaft stops moving and is in an initial contraction state. Then the telescopic shafts of the two jackscrew cylinders of the jackscrew device 205 do extension motion, the telescopic shaft of the jackscrew cylinder 251 drives the jackscrew slide block to move, and the jackscrew slide block drives the connecting seat and the conical head to synchronously move away from the two ends of the pipe body.

The crane drives the positioning frame to descend synchronously until the main pipe is completely placed on the pipe placing groove, the first arc-shaped clamping jaw 261 is not moved, the reciprocating cylinder 263 is started to drive the second arc-shaped clamping jaw 262 to be far away from the first arc-shaped clamping jaw until the four clamping rollers 264 loosen the pipe body. The lifting motor is the motion that contracts, and the crane rises, drives the whole rising of part on the crane, moves away the pipe body in the pipe fitting shelving groove completely, treats the welding of pipe body tube head on the next conveying board.

Referring to fig. 7-8, the branch pipe welding system includes branch pipe welding devices 3 which are symmetrical and work synchronously along two sides of a pipe transmission platform, a stepping limiting device 5 which controls the stepping movement of a transmission plate is arranged on the pipe transmission platform between the two branch pipe welding devices, the stepping limiting device includes a driving device which drives the transmission plate 4 to move in a stepping manner, the driving device includes a lead screw motor 501 which is arranged along the length direction of the pipe transmission platform, two limiting guide rails 502 which are arranged in parallel are arranged on two sides of the lead screw motor 501, a limiting slide carriage 503 is arranged at the shaft end of the lead screw motor, the limiting slide carriage 503 is in sliding fit with the two limiting guide rails 502, the limiting slide carriage 503 slides back and forth along the limiting guide rails 502, a limiting pin shaft 504 is arranged on the top surface of the limiting slide carriage, and a positioning hole which is inserted and assembled with the limiting pin shaft is arranged on the transmission plate; when the conveying plate moves to the position of the branch pipe welding system, the limiting pin shaft is inserted into the positioning hole, and the relative position of the conveying plate is fixed.

A layering mechanism 8 for fixing the pipe body is arranged above the stepping limiting device; the layering mechanism includes layering crossbeam 802 that goes up and down through the drive of layering cylinder, and layering crossbeam downside equipartition is equipped with 8L type layering 803, and every L type layering lower part is equipped with the indent that coincide with the body outer wall. The pressing strip cross beam moves downwards, and the L-shaped pressing strip positioned on the rear side of the pressing strip cross beam presses the pipe body of the main pipe.

Two branch pipe welding set 3 all include branch pipe welding frame, branch pipe welding frame bottom is equipped with the sliding seat, the cooperation of sliding seat bottom is equipped with two and pipe fitting transmission platform transmission direction vertically sliding guide, the sliding seat is kept away from pipe fitting transmission platform one side and is equipped with the servo motor 303 and the servo module 332 of the accurate location of drive sliding seat to pipe fitting transmission platform direction reciprocating motion, servo motor starts, drive the sliding seat motion in opposite directions, when moving to welding preset position, servo module starts, finely tune the position of sliding seat, the position of accurate location branch pipe welding frame.

Branch pipe welding frame top-down is equipped with branch pipe wire feeder 301 and branch pipe welding mechanism 304, branch pipe welding mechanism includes the welder backup pad, and the welder backup pad is located pipe fitting transmission platform one side and equidistant first driving motor 342 who is equipped with 5 bull welder and drives bull welder synchronous revolution, and every bull welder all installs in the welder backup pad through rotary joint, and 5 bull welders are just being responsible for and go up preceding 5 branch pipe welding seams.

The shaft end of the first driving motor is provided with a chain wheel, the whole circle of chain is sequentially wound on the rotating joints 341 in an S shape after passing through the chain wheel, and the first driving motor is started to drive each rotating joint to synchronously operate.

Still be equipped with a plurality of gas mixture interface 343 in the welder backup pad, every gas mixture interface all sets up with bull welder one-to-one, and gas mixture interface 343 all is connected with the gas mixture pipe that is linked together with air feeder. The gas supply device supplies the mixed gas to the multi-head welding gun through the mixed gas pipe from the mixed gas interface.

The branch pipe wire feeding mechanism 301 comprises a plurality of wire discs and a turnover plate 311 which are arranged on the upper portion of the branch pipe welding rack, wherein a turnover motor for driving the turnover plate to rotate is arranged on one side of the turnover plate, turnover guide holes for turnover of the turnover plate are formed in two side plates of the branch pipe welding rack, and the turnover plate is initially located at a position far away from the pipe fitting transmission platform. The turnover motor is started, the free end of the turnover plate moves towards the direction close to the pipe fitting conveying platform, and when the turnover plate is turned to the inclined angle just opposite to the welding line of the branch pipe, the turnover motor is suspended.

The symmetry is equipped with two telescopic cylinder 312 on the returning face plate, and two telescopic cylinder telescopic link lower extremes are equipped with synchronous board 313, and telescopic cylinder starts, and synchronous board is close to branch pipe welding seam direction motion along the returning face plate surface to the drive, and the equidistant 5 welding wire heads 314 that are equipped with on the synchronous board, and every welding wire head corresponds the setting with bull welder respectively, and when the welding wire head just was directly over the branch pipe welding seam position, telescopic cylinder stop work. The multi-head welding gun comprises three claw-shaped welding gun heads which are uniformly distributed along the circumference of a virtual circle, each welding gun head is manually ignited, the flame of each welding gun head is concentrated at the position of a welding seam between a branch pipe and a main pipe, and the welding seams of the branch pipes which are symmetrical on two sides of the main pipe are welded at the same time. The welding wire head is positioned above the position of a welding seam between the branch pipe and the main pipe and avoids the rotating space of the multi-head welding gun;

two wire feeding wheels rotating in opposite directions are arranged on one side of each wire disc, a gap for a welding wire to pass through is formed between the wire feeding wheels, a plurality of wire guide pipes are arranged on the welding wire output side of each wire feeding wheel, the tail end of each wire guide pipe is connected with a corresponding welding wire head, and the welding wire respectively passes through the wire guide pipes and penetrates out of the welding wire heads; in the welding process, the welding wire is continuously melted and then shortened, the wire feeding wheel is started, the welding wire on the wire disc is driven to move towards the wire guide pipe, and the welding wire continuously extends out of the head of the welding wire. The welding wire is continuously heated and melted by flame sprayed by the welding gun heads, the welding wire is dripped onto the branch pipe welding seam, and the three claw-shaped welding gun heads intermittently heat the welding wire liquid for one circle on the branch pipe welding seam in the circumferential rotation process until the welding wire liquid is fully distributed on the branch pipe welding seam for one circle.

Referring to FIG. 9, the batten beam 802 moves upward and the L-shaped batten on the rear side of batten beam 802 moves away from the main pipe body. Then, a screw motor 501 of the stepping limiting device is started, a screw motor shaft drives a limiting sliding seat to move along a limiting guide rail to the moving direction of the conveying plate, the conveying plate is driven to continue moving, a first group of 5 branch pipe welding seams on the pipe body are moved away from 5 multi-head welding guns, the adjacent next group of 5 branch pipe welding seams are respectively opposite to the 5 multi-head welding guns, the screw motor 501 stops moving, and the relative position of the conveying plate 4 is fixed. The pressing bar beam 802 moves downwards, and the L-shaped pressing bar 803 positioned at the rear side of the pressing bar beam 802 presses the pipe body of the main pipe.

The telescopic cylinder 312 is started again, the synchronous plate is driven to move towards the direction close to the welding seam of the branch pipe along the surface of the turnover plate, 5 welding wire heads are respectively arranged corresponding to the multi-head welding gun, and when the welding wire heads are just opposite to the position right above the welding seam of the branch pipe, the telescopic cylinder stops working. The branch welding mechanism continues to weld the second set of 5 branch welds. And sequentially welding all branch pipe welding seams according to the procedures.

The top parts of the pipe head welding machine frame and the branch pipe welding machine frame are both provided with a smoke exhaust bin 201, and a smoke exhaust pipe is arranged above the smoke exhaust bin; toxic flue gas generated in the welding process is collected by the smoke discharging bin 201 and is fixedly discharged through the smoke discharging pipe.

After all the branch pipe weld joints are welded, the telescopic cylinder is started, the synchronous plate 313 is driven to move towards the direction away from the branch pipe weld joints along the surface of the turnover plate 311, and the welding wire head is moved away from the position of the multi-head welding gun. Then, the pressing bar beam 802 moves upward, and the L-shaped pressing bar located at the rear side of the pressing bar beam 802 moves away from the pipe body of the main pipe.

The transfer plate 4 continues to move to the tube discharge 102; both the pipe fitting loading part and the pipe fitting unloading part 102 comprise lifting devices, each lifting device comprises a lifting chain and a lifting plate, each lifting plate reaches an upper limit position and is in butt joint with an upper transmission layer, each lifting plate reaches a lower limit position and is in butt joint with a lower backflow layer, and when the conveying plates continue to move to the pipe fitting unloading part, each conveying plate is limited by a frame of the pipe fitting unloading part, and an upper transmission layer located in the pipe fitting unloading part is not moved.

Referring to fig. 10, a pipe transfer device 6 is arranged above the pipe unloading part, a pipe storage part is arranged on one side of the pipe unloading part, the pipe transfer device comprises a transfer support frame, two parallel transfer guide rails 601 are arranged at the top of the transfer support frame, and the transfer guide rails 601 are arranged above the pipe unloading part and the pipe storage part and are arranged in a cross shape with the pipe conveying platform; the transfer carriage is initially positioned above the tubular transport platform.

A transfer frame which is driven by a transfer motor to move along the transfer guide rail is arranged on the transfer guide rail 601, a lifting cross rod 603 is arranged below the transfer frame, the lifting cross rod is connected with a transfer lifting cylinder 602 fixed on the transfer frame, vertical guide rods 605 are arranged on one side of the transfer lifting cylinder, and 4 transfer clamping jaws 604 are uniformly distributed on the lifting cross rod; the transfer lifting cylinder is started, the transfer lifting cylinder drives the lifting cross rod to move downwards along the vertical guide rod, the transfer clamping jaw 604 clamps the pipe body, the transfer lifting cylinder is started reversely, and the transfer lifting cylinder 602 drives the lifting cross rod to move upwards along the vertical guide rod to clamp the pipe body in a hanging mode. The transfer motor drives the transfer frame to move to the pipe storage part along the transfer guide rail, and the lifting cross rod moves synchronously along with the transfer frame.

The pipe storage part is provided with a finished product storage platform 7, a plurality of triangular slopes 701 are arranged on the table top of the finished product storage platform on one side close to the pipe unloading part, when the pipe body is rotated to the position above the triangular slopes 701, the transfer lifting cylinder 602 is started in the forward direction, when the transfer lifting cylinder drives the lifting cross rod to move downwards along the vertical guide rod to be close to the surfaces of the triangular slopes, after the transfer clamping jaws are loosened, the pipe body rolls down along the triangular slopes and continues to roll on the finished product storage platform under the action of inertia force. A row of limiting upright columns 702 are arranged on the table surface of one side of the finished product storage platform, which is far away from the pipe fitting discharging part. The body is finally stopped spacingly by spacing stand, piles up on the finished product storage platform.

After the pipe fitting unloading part 102 is clamped and transferred by the transfer clamping jaws 604 after being welded and molded, the empty conveying plate cup lifting plate is driven by the lifting chain to descend to a lower limit position to be in butt joint with the lower reflux layer, the empty conveying plate cup lifting plate is transferred onto the lifting plate of the pipe fitting loading part from the lower reflux layer, and the empty conveying plate cup lifting plate is driven by the lifting plate to ascend to the pipe fitting loading part at the height of the upper conveying layer to load the pipe fitting.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic weld continuous production line which characterized in that: the pipe fitting conveying platform comprises a pipe fitting conveying platform (1), a plurality of conveying plates (4) are arranged on the pipe fitting conveying platform, the conveying plates move along the direction of the pipe fitting conveying platform, a plurality of pipe fitting placing frames (401) are arranged on the conveying plates at equal intervals along the length direction, a pipe fitting placing groove is formed in the upper portion of each pipe fitting placing frame, two ends of the pipe fitting conveying platform are respectively arranged as a pipe fitting feeding portion (101) and a pipe fitting discharging portion (102), a pipe head welding device (2) and a branch pipe welding system are sequentially arranged on the pipe fitting conveying platform between the pipe fitting feeding portion and the pipe fitting discharging portion, the branch pipe welding system comprises branch pipe welding devices (3) which are symmetrical and work synchronously along two sides of the pipe fitting conveying platform, a stepping limiting device (5) for controlling the conveying plates to move in a stepping mode is arranged on the pipe fitting conveying platform between the two branch pipe welding devices, and a pressing bar mechanism (8) for fixing a pipe body is arranged above the stepping limiting device;

the device comprises a stepping limiting device (5) and a conveying plate, wherein the stepping limiting device comprises a driving device for driving the conveying plate to move in a stepping mode, the driving device comprises a lead screw motor (501) arranged along the length direction of the pipe fitting conveying platform, two limiting guide rails (502) arranged in parallel are arranged on two sides of the lead screw motor, a limiting sliding seat (503) is arranged at the shaft end of the lead screw motor, the limiting sliding seat is in sliding fit with the two limiting guide rails, the limiting sliding seat slides in a reciprocating mode along the limiting guide rails, a limiting pin shaft (504) is arranged on the top surface of the limiting sliding seat, and a positioning hole in inserting fit with the limiting pin shaft is formed in the conveying plate;

two branch pipe welding set (3) all include branch pipe welding frame (302), and branch pipe welding frame bottom is equipped with sliding seat (321), the cooperation of sliding seat bottom is equipped with two and pipe fitting transmission platform transmission direction vertically sliding guide (331), and the sliding seat is kept away from pipe fitting transmission platform one side and is equipped with servo motor (303) and the servo module (332) of the accurate location of drive sliding seat to pipe fitting transmission platform direction reciprocating motion, and branch pipe welding frame top-down is equipped with branch pipe thread feeding mechanism (301) and branch pipe welding mechanism (304), branch pipe welding mechanism includes the welder backup pad, and the welder backup pad is located pipe fitting transmission platform one side and equidistant is equipped with a plurality of bull welder and the first driving motor (342) of drive welder synchronous revolution, and every bull welder all installs in the welder backup pad through rotary joint (341), and each rotary joint synchronous operation of first driving motor drive still is equipped with a plurality of mist interfaces (343) in the welder backup pad, and every mist interface all sets up with bull welder one-to-one, and the mist interface all is connected with the gas mixing pipe that is linked together with air feeder.

2. The automatic welding continuous production line according to claim 1, characterized in that: the branch pipe wire feeding mechanism (301) comprises a plurality of wire discs and a turnover plate (311) which are arranged at the upper part of a branch pipe welding rack, one side of the turnover plate is provided with a turnover motor for driving the turnover plate to rotate, two telescopic cylinders (312) are symmetrically arranged on the turnover plate, the lower ends of telescopic rods of the two telescopic cylinders are provided with a synchronous plate (313), the synchronous plate is provided with a plurality of welding wire heads (314) at equal intervals, each welding wire head is respectively arranged corresponding to a multi-head welding gun (344), the multi-head welding gun comprises three claw-shaped welding gun heads which are uniformly distributed along a circle of a virtual circle, the flame of each welding gun head is concentrated at the positions of a branch pipe and a main pipe, and each welding wire head is positioned above the positions of the branch pipe and the main pipe and avoids the rotating space of the multi-head welding gun;

two wire feeding wheels rotating in opposite directions are arranged on one side of each wire disc, a gap for a welding wire to pass through is formed between the wire feeding wheels, a plurality of wire guide pipes are arranged on the welding wire output side of each wire feeding wheel, the tail end of each wire guide pipe is connected with a corresponding welding wire head, and the welding wire respectively passes through the wire guide pipes and penetrates out of the welding wire heads;

the layering mechanism (8) comprises a layering beam (802) which is driven to lift through a layering cylinder (801), a plurality of L-shaped layering (803) are uniformly distributed on the lower side of the layering beam (802), and a pressing groove matched with the outer wall of the pipe body is formed in the lower portion of each L-shaped layering.

3. The automatic welding continuous production line of claim 1, characterized in that: the pipe head welding device (2) comprises a lifting frame arranged at the lower part of a pipe head welding rack, a positioning guide rail (202) is arranged on one side of the lifting frame facing the pipe fitting transmission platform, a main pipe fixing device is arranged on the positioning guide rail, the main pipe fixing device comprises a plurality of main pipe clamping jaw devices (206) used for clamping a main pipe, and the main pipe clamping jaw devices are arranged along the length direction of the positioning guide rail; two ends of the positioning guide rail are provided with jackscrew devices (205) which are arranged oppositely, the jackscrew devices at the two ends move oppositely and are matched with and tightly prop against the tube head, one main pipe clamping jaw device is provided with a rotary driving device (207) for driving the main pipe to rotate circumferentially, two ends of the positioning guide rail are also symmetrically provided with a main pipe welding mechanism (204) and a main pipe wire feeding mechanism (203), the tops of the tube head welding rack and the branch pipe welding rack are both provided with a smoke exhaust bin (201), and a smoke exhaust pipe is arranged above the smoke exhaust bin;

be located and be equipped with tube head welding stop device on the pipe fitting transmission platform of tube head welding set position department, tube head welding stop device is equipped with the vertical location telescopic link that upwards sets up including setting up the spacing servo motor in conveying board below on the spacing servo motor, and the location telescopic link corresponds the cooperation with the locating hole shape position on the conveying board.

4. The automatic welding continuous production line of claim 3, wherein: be responsible for clamping jaw device (206) including the locating rack, and the locating rack downside is equipped with reciprocating cylinder (263) and clamping jaw subassembly, and clamping jaw subassembly includes two first arc clamping jaw (261) and second arc clamping jaw (262) that set up and indent in opposite directions, and first arc clamping jaw is fixed continuous with the locating rack front side, and the reciprocating cylinder level sets up, and reciprocating cylinder drive second arc clamping jaw is close to or keeps away from first arc clamping jaw, all be equipped with centre gripping running roller (264) that two set up from top to bottom on the opposite face of first arc clamping jaw and second arc clamping jaw, four centre gripping running rollers form the centre gripping space of being responsible for of centre gripping.

5. The automatic welding continuous production line of claim 3, wherein: the rotary driving device (207) comprises a supporting frame (272) connected with a main pipe clamping jaw device positioning frame, a supporting cylinder (271) driving the supporting frame to move vertically is arranged at the top of the supporting frame, two driven wheels (275) moving in the same direction are arranged at the lower part of the supporting frame, a main pipe placing part is arranged in a gap between the two driven wheels, a driving driven wheel rotating driving wheel (274) is arranged at the upper part of the supporting frame, and the driving wheel is connected with a driving motor (273).

6. The automatic welding continuous production line of claim 3, wherein: the jackscrew device (205) sets up jackscrew cylinder (251) including the symmetry on crane top side, and the telescopic shaft of two jackscrew cylinders sets up dorsad, and the telescopic shaft tip of jackscrew cylinder is equipped with jackscrew slider (252), jackscrew slider and location guide rail sliding fit, and jackscrew slider lower part is equipped with coupling seat (253), and the jackscrew slider is equipped with conical head (254) that withstands body both ends tube head through the coupling seat.

7. The automatic welding continuous production line of claim 3, characterized in that: be responsible for welding mechanism (204) and include the person in charge that upper portion set up to the slope of welding direction and weld the frame, be equipped with the slope slide rail that sets up along its length direction on being responsible for welding the frame, be equipped with the welding slider on the slope slide rail, the welding slider passes through welding cylinder (241) drive, be equipped with deflector (242) on the welding slider, the deflector is improved level and is fixed with welder (243), welder includes two a set of welding gun heads that are the setting of Y type, same group welding gun head is located the jackscrew device top of homonymy all the time, the welder other end links to each other with air feeder through mixing trachea.

8. The automatic welding continuous production line of claim 3, wherein: be responsible for thread feeding mechanism (203) including being responsible for and send a cylinder (231), be responsible for and send a cylinder telescopic shaft lower extreme to be equipped with cylinder axial vertically clamping jaw (232), the centre gripping is equipped with tube head welding wire head (233) in the clamping jaw, be responsible for thread feeding unit still includes tube head wire reel (234), and tube head wire reel one side is equipped with a set of rotatory wire feeding wheel in opposite directions, and two wire feeding wheels rotate the drive welding wire output in opposite directions, and the welding wire passes the wire guide and wears out from tube head welding wire head.

9. The automatic welding continuous production line of claim 1, characterized in that: the pipe fitting conveying platform (1) comprises an upper conveying layer and a lower backflow layer which are arranged up and down, the conveying plate moves to the upper conveying layer through the pipe fitting feeding part, the conveying plate sequentially passes through the pipe head welding device and the branch pipe welding device to complete welding forming of the pipe head and the branch pipe, and the conveying plate continuously moves to the pipe fitting discharging part; pipe fitting material loading portion and pipe fitting portion of unloading all include elevating gear, and elevating gear includes lift chain and lifter plate, and the lifter plate reaches upper limit position and last transmission layer butt joint, and the lifter plate reaches lower limit position and backward flow layer butt joint down, pipe fitting portion of unloading top is equipped with pipe fitting transfer device (6).

10. The automatic welding continuous production line of claim 9, wherein: a pipe storage part is arranged on one side of the pipe unloading part, the pipe transfer device (6) comprises a transfer support frame, two parallel transfer guide rails (601) are arranged at the top of the transfer support frame, and the transfer guide rails are arranged above the pipe unloading part and the pipe storage part and are in cross arrangement with the pipe transmission platform;

a transfer frame which is driven by a transfer motor (602) to move along the transfer guide rail is arranged on the transfer guide rail, a lifting cross rod (603) is arranged below the transfer frame, the lifting cross rod is connected with a transfer lifting cylinder fixed on the transfer frame, and a plurality of transfer clamping jaws (604) are uniformly distributed on the lifting cross rod;

the pipe fitting storage part is provided with a finished product storage platform (7), a plurality of triangular slopes (701) are arranged on the table top of the finished product storage platform close to one side of the pipe fitting discharging part, and a row of limiting upright columns (702) are arranged on the table top of the finished product storage platform far away from one side of the pipe fitting discharging part.