CN115780958B

CN115780958B - Automatic welding continuous production line

Info

Publication number: CN115780958B
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: 2023-08-22
Anticipated expiration: 2042-11-30
Also published as: CN115780958A

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 transmission platform. The main pipe clamping jaw device of the pipe head welding device is matched with the jackscrew device, the clamping main pipe is arranged in a suspending mode, the rotary driving device enables the pipe body to rotate at a uniform speed in the circumferential direction, the main pipe welding mechanism is matched with the main pipe wire feeding mechanism to ensure that welding lines are welded uniformly, and the welding quality of circular seam welding is high. When the branch pipe welding system welds the branch pipes, the servo motor and the servo module are matched to finish opposite movement and accurate positioning of the branch pipe welding frame, and the stepping limiting device sequentially realizes welding of a plurality of groups of branch pipe welding seams, so that the welding device is suitable for welding the circular seam of the pipe body branch pipes with different lengths. The branch pipe wire feeding mechanism automatically feeds wires at a constant speed, effectively matches with the welding speed, the whole temperature of the pipe fitting after welding rises, the pipe fitting transferring device automatically transfers the pipe fitting, labor is saved, the degree of automation is high, the transferring efficiency is high and safe, the finished product automatically completes centralized storage, the cleaning of the pipe body is ensured, and meanwhile, the transfer during the use is convenient.

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 thermal utilization of solar energy, it is critical to convert the radiant energy of the sun into thermal energy, which must be managed to be concentrated because of the relatively diffuse solar energy. Therefore, solar collectors are a critical part of various solar devices.

The runner of solar collector board core includes sprue and branch flow way, and the sprue is responsible for, and branch flow way utilizes a plurality of and is responsible for the branch pipe that sets up perpendicularly, is responsible for both ends and need weld the tube head, all is equipped with the branch pipe along the degree direction on being responsible for, is responsible for and need weld in proper order with the branch pipe, and when being responsible for and the circumferential weld between the tube head, the body is long and thin, is difficult to accomplish simultaneously and supports and at uniform velocity rotation.

In addition, the number of girth welds for butt joint of the branch pipe and the main pipe is large, after the upper parts of the branch pipe and the main pipe girth welds are welded manually, the other half of girth welds are required to be welded continuously after being turned over to the other side, in the welding process, because the space between the branch pipe and the branch pipe is limited, welding wires and welding guns cannot be completely welded in the limited space in the welding process, so that the welding quality of the welding seams is different, the defects such as air holes are easy to occur in the welding seams, and the welding quality is poor. After welding, the pipe fitting is heated and warmed, the pipe fitting needs to be cooled in the air to be manually transferred, the pipe fitting is time-consuming and labor-consuming to transfer, the labor investment is large, a large amount of time is wasted in the batch industrial production process, and the production efficiency is extremely low.

Therefore, in order to reduce the manual input, accurate positioning and matching are performed, the welding time is shortened, the welding quality is improved, dislocation of the pipe head and the branch pipe of the pipe body in the welding process is effectively prevented, the welding quality of the welding line is ensured, and the automatic welding continuous production line is provided.

Disclosure of Invention

The invention aims to provide an automatic welding continuous production line, which solves the problems in the prior art, and has the advantages of automatic feeding, automatic transfer and discharging by utilizing mechanical transmission after sequentially completing welding pipe heads and branch pipes, and completion of storage.

In order to achieve the above purpose, the present invention provides the following technical solutions: the automatic welding continuous production line comprises a pipe conveying platform, wherein a plurality of conveying plates are arranged on the pipe conveying platform, the conveying plates move along the direction of the pipe conveying platform, a plurality of pipe rest frames are arranged on the conveying plates at equal intervals along the length direction, pipe rest grooves are formed in the upper part of each pipe rest frame, two ends of the pipe conveying platform are respectively provided with a pipe feeding part and a pipe discharging part, pipe head welding devices and branch pipe welding systems are sequentially arranged on the pipe conveying platform between the pipe feeding part and the pipe discharging part, each branch pipe welding system comprises branch pipe welding devices which symmetrically and synchronously work along two sides of the pipe conveying platform, a stepping limiting device for controlling the conveying plates to move in a stepping mode is arranged on the pipe conveying platform between the two branch pipe welding devices, and a layering mechanism for fixing a pipe body is arranged above the stepping limiting device; the step limiting device enables each branch pipe welding seam on the main pipe to be welded in sequence, the branch pipe welding system does not need to be consistent with the length of the main pipe, and branch pipe welding seams of main pipes with different lengths can be welded.

The stepping limiting device comprises a driving device for driving the conveying plate to move in a stepping manner, the driving device comprises a screw rod 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 screw rod motor, a limiting sliding seat is arranged at the shaft end of the screw rod motor and is in sliding fit with the two limiting guide rails, the limiting sliding seat slides back and forth along the limiting guide rails, a limiting pin shaft is arranged on the top surface of the limiting sliding seat, and a positioning hole which is in insertion fit with the limiting pin shaft is formed in the conveying plate; through lead screw motor drive for the delivery plate drives the person in charge, and every 5 branch pipe welding seams are a set of welding, and 5 branch pipe welding seams in proper order weld, 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 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 sliding seat keeps away from pipe fitting transmission platform one side and 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 frame to be positioned accurately.

The branch pipe welding frame top-down is equipped with branch pipe wire 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 that is equipped with a plurality of bull welder and drive bull welder synchronous revolution, every bull welder is all installed 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 the bull welder one-to-one, the gas mixture interface all is connected with the gas mixture that is linked together with air feeder. 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 reels and a turnover plate, wherein the wire reels and the turnover plate are arranged at the upper part of the branch pipe welding frame, 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 synchronous plate, a plurality of welding heads are arranged on the synchronous plate at equal intervals, each welding head is respectively and correspondingly arranged with a multi-head welding gun, the multi-head welding gun comprises three claw-type welding gun heads uniformly distributed along a circle of virtual circles, flames of the welding gun heads are concentrated at the positions of welding seams of the branch pipes and the main pipe, and the welding gun heads are positioned above the positions of the welding seams of the branch pipes and the main pipe and avoid the rotating space of the multi-head welding gun; the turnover of the turnover plate enables the synchronous plate to rotate circumferentially, so that the space of a movement stroke is saved.

Two wire feeding wheels which rotate in opposite directions are arranged on one side of each wire reel, a gap through which welding wires pass is formed between one group of 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 welding wires respectively pass through the wire guide pipes and pass 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 degree of automation is high.

The pressing bar mechanism comprises a pressing bar cross beam which is driven to lift by a pressing bar air cylinder, a plurality of L-shaped pressing bars are uniformly distributed on the lower side of the pressing bar cross beam, and pressing grooves which are matched with the outer wall of the pipe body are formed in the lower portion of each L-shaped pressing bar. The pressing bar 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 pipe head welding device comprises a lifting frame arranged at the lower part of the pipe head welding frame, a positioning guide rail 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, and the main pipe fixing device 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 jackscrew devices which are oppositely arranged, the jackscrew devices at the two ends are matched with the jacking pipe head in a moving way in opposite directions, the main pipe clamping jaw device is matched with the jackscrew devices, the main pipe is suspended, and meanwhile, the main pipe body can rotate in the circumferential direction.

A rotary driving device for driving the main pipe to circumferentially rotate 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 discharging bins are arranged at the tops of the pipe head welding frame and the branch pipe welding frame, and smoke discharging pipes are arranged above the smoke discharging bins; the two ends of the main pipe head are welded simultaneously, so that the time is saved, harmful gas generated in the welding process is collected by the smoke discharging bin, and the harmful gas is discharged to a designated space through the smoke discharging pipe, so that the environmental cleaning of a production workshop is ensured.

Be equipped with tube head welding stop device on the pipe fitting transmission platform that is located tube head welding set position department, tube head welding stop device is equipped with the location telescopic link that vertical upwards set up including setting up the spacing servo motor in the delivery plate below on the spacing servo motor, location telescopic link corresponds the cooperation with the locating hole shape position on the delivery plate. The positioning plate is automatically positioned to precisely mate the main tube with the various components of the tube head welding device.

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

More preferably, the rotary driving device comprises a supporting frame connected with a positioning frame of the main pipe clamping jaw device, a supporting cylinder 271 for driving the supporting frame to move vertically is arranged at the top of the supporting frame, two driven wheels moving in the same direction are arranged at the lower part of the supporting frame, a gap between the two driven wheels is set as a main pipe placing part, a driving wheel for driving 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. The two driven wheels rub with the pipe body, the pipe body is automatically driven to move in the same direction and in the circumferential direction, the pipe body rotates at a constant speed, welding uniformity of welding seams is guaranteed, and welding quality is high.

More preferably, the jackscrew device comprises jackscrew cylinders symmetrically arranged on the top side of the lifting frame, telescopic shafts of the two jackscrew cylinders are arranged on the backs of the two jackscrew cylinders, jackscrew sliding blocks are arranged at the ends of telescopic shafts of the jackscrew cylinders and are in sliding fit with the positioning guide rails, a connecting seat is arranged at the lower part of each jackscrew sliding block, and conical heads for supporting tube heads at two ends of the tube body are arranged on the jackscrew sliding blocks through the connecting seat. The jackscrew device realizes the circumferential displacement of body, guarantees simultaneously that the body can be at circumference rotation.

More preferably, the main pipe welding mechanism comprises a main pipe welding frame, the upper part of the main pipe welding mechanism is obliquely arranged towards the welding direction, an inclined sliding rail arranged along the length direction of the main pipe welding frame is arranged on the main pipe welding frame, a welding sliding block is arranged on the inclined sliding rail and driven by a welding cylinder, a guide plate is arranged on the welding sliding block, a welding gun is horizontally fixed on the guide plate and comprises two groups of welding gun heads which are arranged in a Y shape, the same group of welding gun heads are always positioned above a jackscrew device on the same side, and the other end of the welding gun is connected with the air supply device through a mixed air pipe. The welding cylinder drives the welding slide block to drive the welding gun to move, and the welding gun is in the welding process

More preferably, the main pipe wire feeder comprises a main pipe wire feeding cylinder, a clamping jaw perpendicular to the axial direction of the cylinder is arranged at the lower end of a telescopic shaft of the main pipe wire feeding cylinder, a pipe head welding head is clamped in the clamping jaw, the main pipe wire feeder further comprises a pipe head wire tray, one side of the pipe head wire tray is provided with a group of wire feeding wheels which rotate in opposite directions, the two wire feeding wheels rotate in opposite directions to drive welding wires to be output, and the welding wires penetrate through the wire guiding pipe and penetrate out of the pipe head welding head. The clamping jaw clamps the wire guide tube, 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 transmission platform comprises an upper transmission layer and a lower reflux layer which are arranged up and down, the transmission plate moves to the upper transmission layer through the pipe fitting feeding part, and sequentially passes through the pipe head welding device and the branch pipe welding device to finish the welding forming of the pipe head and the branch pipe, and the transmission plate continues to move to the pipe fitting discharging part; the pipe fitting material loading portion and the pipe fitting unloading portion all include elevating gear, and elevating gear includes lift chain and lifter plate, and the lifter plate reaches last extreme position and goes up the transport layer butt joint, and the lifter plate reaches lower extreme position and lower reflux layer butt joint, pipe fitting unloading portion top is equipped with pipe fitting transfer device. The transfer plate is recycled in the upper transfer layer and the lower reflow layer.

More preferably, a pipe fitting storage part is arranged at one side of the pipe fitting unloading part, the pipe fitting transfer device comprises a transfer support frame, two transfer guide rails which are parallel to each other are arranged at the top of the transfer support frame, and the transfer guide rails are arranged above the pipe fitting unloading part and the pipe fitting storage part and are arranged in a cross shape with a pipe fitting 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 whole temperature of pipe fitting after the welding risees, automatic transfer pipe fitting, effectively prevents artifical transfer in-process to scalding etc. of human body, degree of automation is high, and transfer efficiency is high.

The pipe fitting storage part is provided with a finished product storage platform, a plurality of triangular slopes are arranged on a table top of one side, close to the pipe fitting unloading part, of the finished product storage platform, and a row of limit upright posts are arranged on a table top of one side, far away from the pipe fitting unloading part, of the finished product storage 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 storage part is provided with a finished product storage platform, a plurality of triangular slopes are arranged on a table top of one side, close to the pipe fitting unloading part, of the finished product storage platform, and a row of limit upright posts are arranged on a table top of one side, far away from the pipe fitting unloading part, of the finished product storage platform. The finished product is automatically finished and stored in a centralized way, so that the cleaning of the pipe body is ensured, and meanwhile, the transfer during use is convenient.

When each empty conveying plate is arranged at the pipe fitting feeding part, the main pipe of the heat pipe is manually placed in the pipe fitting placing groove, each branch pipe and the pipe head are spot-welded on the branch pipe, and the pipe head welding line and the whole welding line of the pipe head welding line are welded and formed. The conveying plate moves to the upper transmission 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 to finish welding forming of the pipe head and the branch pipe, when the conveying plate enters the pipe head welding rack, the lifting motor retracts, the lifting frame ascends to drive the parts on the lifting frame to integrally ascend, and the pipe body laid on the conveying plate is avoided.

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

When the conveying plate is limited by the pipe head welding limiting device and the pipe head welding procedure is carried out, the lifting motor stretches out to move, and the lifting frame descends to drive the components on the lifting frame to wholly descend.

The main pipe clamping jaw device can slide to any position of the positioning guide rail according to the requirement, and clamps pipe bodies with different lengths. When the locating plate is fixed at the position of the pipe head welding device in a limiting mode, the lifting frame drives the locating frame to descend synchronously, the locating frame is lowered to stop when the locating frame is located at the same height position with the clamping jaw assembly and the main pipe, the first arc clamping jaw and the second arc clamping jaw are in a far-away state, the first arc clamping jaw is motionless, the reciprocating cylinder is started, the second arc clamping jaw is driven to approach the first arc clamping jaw, and the pipe body is clamped by the four clamping rollers.

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

The two ends of the positioning guide rail are provided with jackscrew devices which are arranged in opposite directions, the jackscrew devices synchronously descend along with the lifting frame, and after the clamping jaw devices of the main pipe clamp the pipe body circumferentially and fixedly, the jackscrew devices at the two ends move in opposite directions to be matched with the jacking pipe head.

The pipe body is fixed in the circumference and the axial, is equipped with the rotatory drive arrangement of drive main pipe circumference on one of them and is responsible for clamping jaw device, and vertical motor shaft stretches out the motion, and two follow driving wheel decline to pipe body outer wall department, with pipe body outer wall contact cooperation. The driving motor is started to drive the driving wheel to rotate, the chain transmission drives the two driven wheels to rotate, the driven wheels rub against the outer wall of the pipe body, and the pipe body is driven to circumferentially rotate along one direction.

Before welding, the telescopic shaft of the welding cylinder is in a contracted state, the welding slide block is positioned at the uppermost part of the inclined slide rail, after the air supply device is opened, mixed gas is discharged from the welding gun head through the mixed gas pipe, the welding gun is ignited manually, and high-temperature flame is sprayed out. Starting a welding cylinder, enabling a telescopic shaft of the welding cylinder to extend, enabling a welding slide block to move downwards and backwards until flame of a group of welding gun heads is opposite to a welding line of a pipe head, and stopping moving of the welding cylinder; the flame of the welding gun head is heated over the welding line of the pipe head.

The telescopic shaft of the wire feeding cylinder stretches out 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 is located right above the welding seam of the tube head and located at the position where flame of the welding gun head heats, the flame of the welding gun head melts the welding wire to weld the tube head, and the tube body is driven to rotate by the rotary driving device for a circle, so that welding of the welding seam of the tube head is completed for a circle.

After the welding of the welding seam of the pipe head 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 head moves away from the welded welding seam of the pipe head, then the welding cylinder is started, the telescopic shaft of the welding cylinder retracts to move upwards and forwards until the flame of a group of welding heads moves away from the welding seam of the pipe head completely, and the welding cylinder stops moving the telescopic shaft to be in an initial retraction state. And then the telescopic shafts of the two jackscrew cylinders of the jackscrew device do extending movement, the telescopic shafts of the jackscrew cylinders drive the jackscrew sliding blocks to move, and the jackscrew sliding blocks drive the connecting seat and the conical heads to synchronously move away from the two end parts of the pipe body.

The lifting frame drives the positioning frame to synchronously descend until the main pipe is completely placed on the pipe fitting placing groove, the first arc clamping jaw is motionless, the reciprocating cylinder is started, the second arc clamping jaw is driven to move away from the first arc clamping jaw until the four clamping rollers loosen the pipe body. The lifting motor retracts, the lifting frame ascends to drive the components on the lifting frame to integrally ascend, the components are completely moved away from the pipe body in the pipe fitting placing groove, and the pipe head on the next conveying plate is welded.

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

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 pipe body is arranged above the stepping limiting device; the pressing bar mechanism comprises a pressing bar cross beam 802 which is driven to lift by a pressing bar cylinder, 8L-shaped pressing bars are uniformly distributed on the lower side of the pressing bar cross beam, and pressing grooves which are matched with the outer wall of the pipe body are formed in the lower portion of each L-shaped pressing bar. The batten beam moves downwards, and the L-shaped batten positioned at the rear side of the batten beam presses the pipe body of the main pipe.

And starting the servo motor to drive the sliding seat to move in opposite directions, starting the servo module when the sliding seat moves to a welding preset position, finely adjusting the position of the sliding seat, and accurately positioning the position of the branch pipe welding frame.

The branch pipe welding frame is provided with a branch pipe wire feeding mechanism and a branch pipe welding mechanism from top to bottom, the branch pipe welding mechanism comprises a welding gun supporting plate, the welding gun supporting plate is positioned on one side of the pipe fitting transmission platform and is provided with 5 multi-head welding guns at equal intervals and a first driving motor for driving the multi-head welding guns to synchronously rotate, each multi-head welding gun is installed on the welding gun supporting plate through a rotary joint, the 5 multi-head welding guns are opposite to the front 5 branch pipe welding joints on the main pipe, and the first driving motor starts to drive each rotary joint to synchronously operate. The gas supply device supplies the mixed gas to the multi-head welding gun through the mixed gas interface.

Then, the turnover motor of the branch pipe wire feeding mechanism is started, the free end of the turnover plate moves towards the direction close to the pipe fitting transmission platform, and when the turnover plate turns to an inclination angle opposite to the welding line of the branch pipe, the turnover motor is suspended. The telescopic cylinder is started to drive the synchronous plate to move along the surface of the turnover plate in the direction close to the welding line of the branch pipe, 5 welding heads are arranged on the synchronous plate at equal intervals, each welding head is respectively and correspondingly arranged with the multi-head welding gun, and when the welding heads are right above the welding line position of the branch pipe, the telescopic cylinder stops working. The multi-head welding gun comprises three claw-type welding gun heads uniformly distributed along a circumference of a virtual circle, each welding gun head is ignited manually, flames of the welding gun heads are concentrated at positions of welding seams of the branch pipes and the main pipe, and welding seams of the branch pipes which are symmetrical on two sides of the main pipe are welded simultaneously. The welding wire heads are positioned above the welding seam positions of the branch pipes and the main pipe and avoid the rotating space of the multi-head welding gun;

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

The batten beam moves upwards, and the L-shaped batten positioned at the rear side of the batten beam moves away from the pipe body of the main pipe. And 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 movement direction of the conveying plate, and drives the conveying plate to move continuously, so that the first group of 5 branch pipe welding seams on the pipe body are moved away from 5 multi-head welding guns, the next group of 5 adjacent branch pipe welding seams are respectively opposite to the 5 multi-head welding guns, the screw motor stops moving, and the relative positions of the conveying plate are fixed. The batten beam moves downwards, and the L-shaped batten positioned at the rear side of the batten beam compresses the pipe body of the main pipe.

The telescopic cylinder is started again, the synchronous plate is driven to move along the surface of the turnover plate in the direction close to the welding line of the branch pipe, 5 welding wire heads are respectively arranged corresponding to the multi-head welding gun, and when the welding wire heads are right over the welding line position 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 (5) sequentially welding all the branch pipe welding seams according to the procedures.

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

After all the welding seams of the branch pipes are welded, the telescopic cylinder is started, the synchronous plate is driven to move along the surface of the turnover plate in the direction away from the welding seams of the branch pipes, and the welding head is moved away from the position of the multi-head welding gun. Then, the batten beam moves upwards, and the L-shaped batten positioned at the rear side of the batten beam moves away from the pipe body of the main pipe.

The conveying plate continues to move to the pipe fitting discharging part; the pipe fitting material loading portion and pipe fitting unloading portion all include elevating gear, and elevating gear includes lift chain and lifter plate, and the lifter plate reaches last extreme position and goes up the transport layer butt joint, and the lifter plate reaches lower extreme position and lower reflux layer butt joint, and when the conveyer plate continued to move to pipe fitting unloading portion, by pipe fitting unloading portion's frame restriction, be located pipe fitting unloading portion's last transport layer motionless.

The transfer support frame is initially located above the pipe fitting transmission platform, 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 clamps the pipe body, the transfer lifting cylinder is reversely started, and the transfer lifting cylinder drives the lifting cross rod to move upwards along the vertical guide rod, so that the pipe body is suspended and clamped. The transfer motor drives the transfer frame to move along the transfer guide rail to the pipe fitting storage part, and the lifting cross rod moves synchronously along with the transfer frame.

When the pipe body is rotated to the upper part of the triangular slope, the transfer lifting cylinder is started positively, and when 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, 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 inertia force. A row of limit upright posts are arranged on the table top of one side of the finished product storage platform, which is far away from the pipe fitting discharging part. The pipe body is finally blocked and limited by the limiting upright post and is stacked on the finished product storage platform.

When the pipe fitting unloading part is clamped and transferred by the transferring clamping jaw after being welded and molded, the empty conveying plate cup lifting plate is driven by the lifting chain to descend to the lower limit position to be in butt joint with the lower reflux layer, the lower reflux layer is transferred to the lifting plate of the pipe fitting feeding part, and the lifting plate is used for driving the pipe fitting feeding part to rise to the height of the upper conveying layer to be loaded with the pipe fitting.

Compared with the prior art, the invention has the beneficial effects that: and a plurality of conveying plates circularly and repeatedly move between the upper conveying layer, the lower reflux layer, the pipe fitting feeding part and the pipe fitting discharging part at the two ends. The pipe body is first through pipe head welding set's the clamping jaw device that is responsible for and jackscrew device cooperation, is responsible for in axial and circumference automatic clamping, will be responsible for unsettled setting and rotation driving device and make the rotation at uniform velocity in pipe body circumference, is responsible for the clamping jaw centre gripping wire guide of wire feed unit, and wire head direction and height are all adjustable, and the wire head is convenient to be changed, is responsible for welding mechanism and is responsible for wire feed mechanism cooperation and guarantees that the welding seam welds evenly, circular seam penetration, and pipe head welding quality is high.

The conveying plate continues to move to the branch pipe welding system, the servo motor and the servo module are matched to finish opposite movement and accurate positioning of the branch pipe welding frame, and the stepping limiting device sequentially realizes welding of a plurality of groups of branch pipe welding seams, so that the welding device is suitable for welding of the circular seams of the branch pipe bodies with different lengths. The layering mechanism is fixed the body at circumference, effectively guarantees not taking place the aversion at the welding process of the body of different length, and branch pipe welding efficiency is high.

The turnover plate of the branch pipe wire feeding mechanism drives the synchronous plate to circumferentially rotate, so that the space of a movement stroke is saved. And the wire is automatically fed at a constant speed, and the welding speed is effectively matched. The whole temperature of pipe fitting after the welding risees, and pipe fitting transfer device automatic transfer pipe fitting effectively prevents artifical transfer in-process to scalding etc. of human body, and degree of automation is high, and transfer efficiency is high, and the finished product is automatic to be accomplished and is concentrated to be stored, guarantees the cleanness of body, transfer when facilitating the use simultaneously.

Drawings

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

FIG. 2 is a schematic view of a pipe head welding device according to the present invention;

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

FIG. 4 is a schematic view of a partial structure of a jackscrew apparatus of the present invention;

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

FIG. 6 is a schematic view of a partial structure of a rotary driving device according to the present invention;

FIG. 7 is a schematic view of a partial structure of a welding device for two side branch pipes according to the present invention;

FIG. 8 is a schematic view of a partial structure of a welding device for a side branch pipe according to the present invention;

FIG. 9 is a schematic view of a partial structure of the molding mechanism of the present invention;

fig. 10 is a schematic view showing a partial structure of the pipe transferring apparatus and the finished product storage platform according to the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-2, an 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 rest frames 401 are arranged on the conveying plates at equal intervals along the length direction, pipe rest grooves are formed in the upper portion of each pipe rest 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 arranged on the pipe rest frames.

Pipe fitting transmission platform both ends are established to pipe fitting material loading portion 101 and pipe fitting discharge portion 102 respectively, are equipped with tube head welding set 2 and branch pipe welding system on the pipe fitting transmission platform between pipe fitting material loading portion and the pipe fitting discharge portion in proper order, and the both ends tube head of being responsible for passes through welded fastening shaping, and be responsible for and each branch pipe passes through welded fastening shaping. The pipe fitting transmission platform comprises an upper transmission layer and a lower reflow layer which are arranged up and down, the transmission plates move to the upper transmission layer through the pipe fitting feeding part, when each empty transmission plate is arranged on the pipe fitting feeding part, the main pipe of the heat pipe is manually placed in the pipe fitting placing groove, each branch pipe and the pipe head are spot-welded on the branch pipe, and the pipe head welding seam and the whole welding seam of the pipe head welding seam are welded and formed.

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

Referring to fig. 2, the pipe head welding device 2 includes a lifting frame disposed at a lower portion of the pipe head welding frame, lifting motors are symmetrically disposed at an upper portion of the pipe head welding frame, the lifting frames are synchronously driven by the two lifting motors to lift along the pipe head welding frame, when the conveying plate enters or leaves the pipe head welding frame, the lifting motors retract, the lifting frames lift to drive components on the lifting frames to integrally lift, pipe bodies placed on the conveying plate are avoided, when the conveying plate is limited by the pipe head welding limiting device, and when a pipe head welding procedure is performed, the lifting motors stretch out, the lifting frames descend to drive the components on the lifting frames to integrally descend.

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 202, 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 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 according to the requirement, and clamps pipe bodies with different lengths.

Referring to fig. 3, the main pipe clamping jaw device 206 includes a positioning frame, a reciprocating cylinder 263 and a clamping jaw assembly are disposed at the lower side of the positioning frame, the clamping jaw assembly includes two first arc clamping jaws 261 and second arc clamping jaws 262 which are disposed opposite and concave, the first arc clamping jaws are fixedly connected with the front side of the positioning frame, the reciprocating cylinder is horizontally disposed, the reciprocating cylinder drives the second arc clamping jaws to be close to or far away from the first arc clamping jaws, two clamping rollers 264 disposed up and down are disposed on opposite surfaces of the first arc clamping jaws and the second arc clamping jaws, and the four clamping rollers 264 form a clamping space for clamping the main pipe. When the locating plate 4 is fixed at the position of the pipe head welding device in a limiting mode, the lifting frame drives the locating frame to descend synchronously, the locating frame is stopped when the locating frame descends to be located at the same height position with the clamping jaw assembly and the main pipe, the first arc clamping jaw 261 and the second arc clamping jaw 262 are in a far away state, the first arc clamping jaw is motionless, the reciprocating cylinder is started, the second arc clamping jaw is driven to approach the first arc clamping jaw, and the pipe body is clamped by the four clamping rollers.

After the pipe body is clamped by the main pipe clamping jaw device 206, the lifting motor retracts, the lifting frame ascends to drive the components on the lifting frame to wholly ascend, and the main pipe clamping jaw device 206 ascends to suspend after clamping the pipe body.

Referring to fig. 4, two opposite ends of the positioning rail are provided with opposite jackscrew devices 205, the jackscrew devices 205 descend synchronously with the lifting frame, and after the pipe body is clamped and fixed circumferentially by the main pipe clamping jaw device 206, the jackscrew devices at two ends move oppositely to match with and tightly press the pipe head. The jackscrew device 205 includes the jackscrew cylinder 251 of symmetry setting in crane top side, the flexible axial back of two jackscrew cylinders 251 sets up, the flexible axle of two jackscrew cylinders is the motion of retracting, the flexible axle tip of jackscrew cylinder is equipped with jackscrew slider 252, the flexible axle of jackscrew cylinder drives jackscrew slider 252, jackscrew slider and location guide rail sliding fit, jackscrew slider slides in opposite directions on the location guide rail, jackscrew slider lower part is equipped with connecting seat 253, the jackscrew slider is equipped with the conical head 254 that withstands body both ends tube head through the connecting seat, connecting seat and conical head synchronous opposite directions move, the body is on same axis with the conical head, conical head top tightly tube head.

Referring to fig. 6, the pipe body is fixed in both the circumferential direction and the axial direction, and a rotation driving device 207 for driving the main pipe to rotate in the circumferential direction is arranged on one main pipe clamping jaw device, and the rotation driving device 207 comprises a supporting frame connected with a positioning frame of the main pipe clamping jaw device. The top of the support frame is provided with a support cylinder 271 for driving the support frame to vertically move, the lower part of the support frame is provided with two driven wheels 275 which move in the same direction, a gap between the two driven wheels 275 is set as a main pipe placing part, the upper part of the support frame is provided with a driving wheel 274 for driving the driven wheels 275 to rotate, and the driving wheel is connected with a driving motor 273. The vertical motor shaft stretches out and moves, 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 wheel and the two driven wheels are arranged in a triangle, and are driven to rotate sequentially through a chain, the driving motor is started to drive the driving wheel to rotate, the chain drives the two driven wheels to rotate, the driven wheels rub against the outer wall of the pipe body, and the driving pipe body circumferentially rotates along one direction.

Referring to fig. 5, two ends of the positioning guide rail 202 are symmetrically provided with a main pipe welding mechanism 204 and a main pipe wire feeding mechanism 203, the main pipe welding mechanism 204 comprises a main pipe welding frame with an upper part inclined towards a welding direction, an inclined slide rail arranged along the length direction of the main pipe welding frame is arranged on the main pipe welding frame, a welding slide block is arranged on the inclined slide rail and driven by a welding cylinder 241, a guide plate 242 is arranged on the welding slide block, a welding gun 243 is horizontally fixed on the guide plate, the welding gun comprises two groups of welding gun heads arranged in a Y shape, the same group of welding gun heads are always positioned above a jackscrew device on the same side, and the other end of the welding gun is connected with an air supply device through a mixed air pipe. Before welding, the telescopic shaft of the welding cylinder is in a contracted state, the welding slide block is positioned at the uppermost part of the inclined slide rail, after the air supply device is opened, mixed gas is discharged from the welding gun head through the mixed gas pipe, the welding gun is ignited manually, and high-temperature flame is sprayed out. Starting a welding cylinder, enabling a telescopic shaft of the welding cylinder to extend, enabling a welding slide block to move downwards and backwards until flame of a group of welding gun heads is opposite to a welding line of a pipe head, and stopping moving of the welding cylinder; the flame of the welding gun head is heated over the welding line of the pipe head.

The main pipe wire feeding mechanism 203 comprises a main pipe wire feeding cylinder 231, a clamping jaw 232 perpendicular to the axial direction of the cylinder is arranged at the lower end of a telescopic shaft of the main pipe wire feeding cylinder 231, a pipe head welding wire head 233 is clamped in the clamping jaw, the main pipe wire feeding device further comprises a pipe head wire disc 234, one side of the pipe head wire disc 234 is provided with a group of wire feeding wheels which rotate in opposite directions, the two wire feeding wheels rotate in opposite directions to drive welding wires to be output, and the welding wires penetrate through the wire guide pipe and penetrate out of the pipe head welding wire head 233. The telescopic shaft of the wire feeding cylinder stretches out 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 is located right above the welding seam of the tube head and located at the position where flame of the welding gun head heats, the flame of the welding gun head melts the welding wire to weld the tube head, and the tube body is driven to rotate by the rotary driving device for a circle, so that welding of the welding seam of the tube head is completed for a circle.

After the welding of the pipe head weld joint is finished, the telescopic shaft of the main pipe wire feeding cylinder 231 retracts to drive the clamping jaw to move upwards, the clamping jaw drives the welding wire head to move upwards, the welding wire head moves away from the welded pipe head weld joint, then the welding cylinder is started, the telescopic shaft of the welding cylinder retracts to move upwards and forwards, the welding slide block moves forwards until the flame of a group of welding gun heads moves away from the pipe head weld joint completely, and the welding cylinder stops moving the telescopic shaft to be in an initial shrinkage state. Then, the telescopic shafts of the two jackscrew cylinders of the jackscrew device 205 do extending movement, the telescopic shafts of the jackscrew cylinders 251 drive the jackscrew sliding blocks to move, and the jackscrew sliding blocks drive the connecting seat and the conical heads to synchronously move away from the two ends of the pipe body.

The lifting frame drives the positioning frame to synchronously descend until the main pipe is completely placed on the pipe placing groove, the first arc clamping jaw 261 is motionless, the reciprocating cylinder 263 is started, the second arc clamping jaw 262 is driven to move away from the first arc clamping jaw until the four clamping rollers 264 loosen the pipe body. The lifting motor retracts, the lifting frame ascends to drive the components on the lifting frame to integrally ascend, the components are completely moved away from the pipe body in the pipe fitting placing groove, and the pipe head on the next conveying plate is welded.

Referring to fig. 7-8, the branch pipe welding system comprises branch pipe welding devices 3 which symmetrically and synchronously work along two sides of a pipe conveying platform, a stepping limiting device 5 for controlling a conveying plate to move in a stepping manner is arranged on the pipe conveying platform between the two branch pipe welding devices, the stepping limiting device comprises a driving device for driving the conveying plate 4 to move in a stepping manner, the driving device comprises a screw motor 501 arranged along the length direction of the pipe conveying platform, two limiting guide rails 502 which are arranged in parallel with each other are arranged on two sides of the screw motor 501, limiting sliding seats 503 are arranged at shaft ends of the screw motor, the limiting sliding seats 503 are in sliding fit with the two limiting guide rails 502, the limiting sliding seats 503 slide reciprocally along the limiting guide rails 502, limiting pin shafts 504 are arranged on the top surfaces of the limiting sliding seats, and positioning holes which are in inserting fit with the limiting pin shafts are arranged on the conveying 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 comprises layering cross beams 802 which are driven to rise and fall through layering air cylinders, 8L-shaped layering 803 are uniformly distributed on the lower sides of the layering cross beams, and pressing grooves which are matched with the outer wall of the pipe body are formed in the lower portion of each L-shaped layering. The batten beam moves downwards, and the L-shaped batten positioned at the rear side of the batten 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 with pipe fitting transmission platform transmission direction vertically sliding guide, sliding seat keeps away from pipe fitting transmission platform one side and is equipped with the servo motor 303 that drive sliding seat to pipe fitting transmission platform direction reciprocating motion and the servo module 332 that drive sliding seat is accurate to be fixed a position, servo motor starts, drive sliding seat motion in opposite directions, when moving to the welding preset position, servo module starts, fine setting sliding seat's position, the position of accurate positioning branch pipe welding frame.

The branch pipe welding frame is provided with a branch pipe wire feeding mechanism 301 and a branch pipe welding mechanism 304 from top to bottom, the branch pipe welding mechanism comprises a welding gun supporting plate, the welding gun supporting plate is positioned on one side of the pipe fitting transmission platform and is provided with 5 multi-head welding guns at equal intervals and a first driving motor 342 for driving the multi-head welding guns to synchronously rotate, each multi-head welding gun is installed on the welding gun supporting plate through a rotary joint, and the 5 multi-head welding guns are opposite to the front 5 branch pipe welding joints on the main pipe.

The first driving motor shaft end is provided with a chain wheel, the whole circle of chain is sequentially S-shaped and wound on the rotary joint 341 after passing through the chain wheel, and the first driving motor starts to drive each rotary joint to synchronously operate.

And a plurality of mixed gas interfaces 343 are further arranged on the welding gun supporting plate, each mixed gas interface is arranged in one-to-one correspondence with the multi-head welding gun, and the mixed gas interfaces 343 are connected with a mixed gas pipe communicated with the gas supply device. The gas supply device supplies the mixed gas to the multi-head welding gun through the mixed gas interface.

The branch pipe wire feeding mechanism 301 comprises a plurality of wire trays and a turnover plate 311 which are arranged on the upper portion of the branch pipe welding frame, 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 frame, and the turnover plate is initially located at a position far away from the pipe fitting transmission platform. The overturning motor is started, the free end of the overturning plate moves towards the direction close to the pipe fitting transmission platform, and when the overturning plate overturns to an inclination angle opposite to the welding line of the branch pipe, the overturning motor is suspended.

Two telescopic cylinders 312 are symmetrically arranged on the turnover plate, a synchronous plate 313 is arranged at the lower ends of telescopic rods of the two telescopic cylinders, the telescopic cylinders are started to drive the synchronous plate to move along the surface of the turnover plate in the direction close to the welding seam of the branch pipe, 5 welding heads 314 are arranged on the synchronous plate at equal intervals, each welding head is respectively arranged corresponding to a multi-head welding gun, and when the welding heads are right above the welding seam position of the branch pipe, the telescopic cylinders stop working. The multi-head welding gun comprises three claw-type welding gun heads uniformly distributed along a circumference of a virtual circle, each welding gun head is ignited manually, flames of the welding gun heads are concentrated at positions of welding seams of the branch pipes and the main pipe, and welding seams of the branch pipes which are symmetrical on two sides of the main pipe are welded simultaneously. The welding wire heads are positioned above the welding seam positions of the branch pipes and the main pipe and avoid the rotating space of the multi-head welding gun;

Two wire feeding wheels which rotate in opposite directions are arranged on one side of each wire reel, a gap through which welding wires pass is formed between one group of 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 welding wires respectively pass through the wire guide pipes and pass out of the welding wire heads; in the welding process, the welding wire is melted continuously and then becomes short, the wire feeding wheel is started, the welding wire on the wire reel is driven to move towards the wire guide tube, and the welding wire continuously extends out of the welding wire head. The welding wire is continuously heated and melted by flame sprayed out of the welding gun head, the welding wire drops onto the welding seams of the branch pipes, and the three claw-shaped welding gun heads intermittently heat the welding wire liquid on the welding seams of the branch pipes until the welding wire liquid is fully distributed on the welding seams of the branch pipes for one circle in the circumferential rotation process.

Referring to fig. 9, the bead cross member 802 moves upward, and the L-shaped bead located at the rear side of the bead cross member 802 moves away from the body of the main pipe. Then the screw motor 501 of the stepping limiting device is started, the screw motor shaft drives the limiting sliding seat to move along the limiting guide rail to the moving direction of the conveying plate, and drives the conveying plate to move continuously, so that the first group of 5 branch pipe welding seams on the pipe body are moved away from 5 multi-head welding guns, the next group of 5 adjacent 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 batten beam 802 moves downwards, and the L-shaped batten 803 positioned at the rear side of the batten beam 802 presses the pipe body of the main pipe.

The telescopic cylinder 312 is started again, the synchronous plate is driven to move along the surface of the turnover plate in the direction approaching to the welding line of the branch pipe, 5 welding wire heads are respectively arranged corresponding to the multi-head welding gun, and when the welding wire heads are right over the welding line position 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 (5) sequentially welding all the branch pipe welding seams according to the procedures.

The top parts of the tube head welding frame and the branch tube welding frame are respectively provided with a smoke discharging bin 201, and a smoke discharging tube is arranged above the smoke discharging bins; toxic smoke generated during the welding process is collected by the smoke discharging bin 201 and fixedly discharged through the smoke discharging tube.

After all the branch pipe welding seams are welded, the telescopic cylinder is started, the synchronous plate 313 is driven to move along the surface of the overturning plate 311 in the direction away from the branch pipe welding seams, and the welding head moves away from the multi-head welding gun. Then, the bead cross beam 802 moves upward, and the L-shaped bead located at the rear side of the bead cross beam 802 moves away from the body of the main pipe.

The transfer plate 4 continues to move to the tubular discharge portion 102; the pipe fitting material loading portion and the pipe fitting unloading portion 102 all include elevating gear, and elevating gear includes lift chain and lifter plate, and the lifter plate reaches last extreme position and goes up the butt joint of transmission layer, and the lifter plate reaches lower extreme position and the butt joint of lower reflux layer, and when the conveyer plate continued to move to pipe fitting unloading portion, by pipe fitting unloading portion's frame restriction, be located pipe fitting unloading portion's last transmission layer motionless.

Referring to fig. 10, a pipe transferring device 6 is disposed above the pipe unloading portion, a pipe storage portion is disposed at one side of the pipe unloading portion, the pipe transferring device includes a transferring support frame, two parallel transferring rails 601 are disposed at the top of the transferring support frame, and the transferring rails 601 are disposed above the pipe unloading portion and the pipe storage portion and are disposed in a cross shape with a pipe transmission platform; the transfer support is initially positioned above the tubular transfer 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 and is connected with a transfer lifting cylinder 602 fixed on the transfer frame, one side of the transfer lifting cylinder is provided with a vertical guide rod 605, 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 reversely started, and the transfer lifting cylinder 602 drives the lifting cross rod to move upwards along the vertical guide rod, so that the pipe body is suspended and clamped. The transfer motor drives the transfer frame to move along the transfer guide rail to the pipe fitting storage part, and the lifting cross rod moves synchronously along with the transfer frame.

The pipe fitting storage part is provided with a finished product storage platform 7, a plurality of triangular slopes 701 are arranged on a table top of the finished product storage platform, which is close to one side of the pipe fitting unloading part, when a pipe body is turned over the triangular slopes 701, a transfer lifting cylinder 602 is started positively, when the transfer lifting cylinder drives a lifting cross rod to move downwards along a vertical guide rod to be close to the surfaces of the triangular slopes, after a transfer clamping jaw is loosened, the pipe body rolls down along the triangular slopes and is subjected to inertia force to continue rolling on the finished product storage platform. A row of spacing posts 702 are provided on the top of the product storage platform on the side remote from the tubular discharge portion. The pipe body is finally blocked and limited by the limiting upright post and is stacked on the finished product storage platform.

When the pipe fitting unloading part 102 is clamped and transferred by the transferring clamping jaw 604, the empty conveying plate cup lifting plate is driven by the lifting chain to descend to the lower limit position to be in butt joint with the lower reflow layer, the lower reflow layer is transferred to the lifting plate of the pipe fitting feeding part, and the lifting plate is used for driving the pipe fitting feeding part to rise to the height of the upper conveying layer, so that the pipe fitting is to be loaded.

While the fundamental and principal features of the invention and advantages of the invention have been shown and described, 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 may be embodied in 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. An automatic welding continuous production line which is characterized in that: the pipe fitting welding device comprises a pipe fitting transmission platform (1), wherein a plurality of transmission plates (4) 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 placing frames (401) are arranged on the transmission plates at equal intervals along the length direction, pipe fitting placing grooves are formed in the upper part of each pipe fitting shelf, pipe fitting feeding parts (101) and pipe fitting discharging parts (102) are respectively arranged at two ends of the pipe fitting transmission platform, pipe head welding devices (2) and branch pipe welding systems are sequentially arranged on the pipe fitting transmission platform between the pipe fitting feeding parts and the pipe fitting discharging parts, the branch pipe welding systems comprise branch pipe welding devices (3) which symmetrically and synchronously work along the two sides of the pipe fitting transmission platform, step limiting devices (5) for controlling the step movement of the transmission plates are arranged on the pipe fitting transmission platform between the two branch pipe welding devices, and a layering mechanism (8) for fixing a pipe body is arranged above the step limiting devices;

The stepping limiting device (5) comprises a driving device for driving the conveying plate to move in a stepping manner, the driving device comprises a screw motor (501) arranged along the length direction of the pipe fitting conveying platform, two limiting guide rails (502) which are arranged in parallel are arranged on two sides of the screw motor, a limiting sliding seat (503) is arranged at the shaft end of the screw motor and is in sliding fit with the two limiting guide rails, the limiting sliding seat slides back and forth 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 which is in inserting fit with the limiting pin shaft is formed in the conveying plate;

two branch pipe welding device (3) all include branch pipe welding frame (302), branch pipe welding frame bottom is equipped with sliding seat (321), sliding seat bottom cooperation is equipped with two and pipe fitting transmission platform transmission direction vertically sliding guide (331), sliding seat keeps away from pipe fitting transmission platform one side and is equipped with servo motor (303) of drive sliding seat to pipe fitting transmission platform direction reciprocating motion and the servo module (332) of the accurate location of drive sliding seat, 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, the welder backup pad is located pipe fitting transmission platform one side and equidistant first driving motor (342) that are equipped with a plurality of bull welder and drive bull welder synchronous revolution, every bull welder is all installed in the welder backup pad through rotary joint (341), each rotary joint synchronous operation of first driving motor drive still is equipped with a plurality of gas mixture interface (343) in the welder backup pad, every gas mixture interface all sets up with the bull welder one-to-one, the gas mixture interface all is connected with the gas mixture that is linked together with gas 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 reels and a turnover plate (311) which are arranged at the upper part of a branch pipe welding frame, a turnover motor for driving the turnover plate to rotate is arranged at one side of the turnover plate, two telescopic cylinders (312) are symmetrically arranged on the turnover plate, a synchronous plate (313) is arranged at the lower end of a telescopic rod of each telescopic cylinder, a plurality of wire heads (314) are arranged on the synchronous plate at equal intervals, each wire head is respectively and correspondingly arranged with a multi-head welding gun (344), each multi-head welding gun comprises three claw-type welding gun heads uniformly distributed along a circle of virtual circles, flames of the welding gun heads are concentrated at the positions of welding joints of the branch pipes and the main pipe, and the welding gun heads are positioned above the positions of the welding joints of the branch pipes and the main pipe and avoid the space for the multi-head welding gun to rotate;

two wire feeding wheels which rotate in opposite directions are arranged on one side of each wire reel, a gap through which welding wires pass is formed between one group of 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 welding wires respectively pass through the wire guide pipes and pass out of the welding wire heads;

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

3. The automatic welding continuous production line according to claim 1, characterized in that: the pipe head welding device (2) comprises a lifting frame arranged at the lower part of the pipe head welding frame, 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, and the main pipe fixing device comprises a plurality of main pipe clamping jaw devices (206) used for clamping a main pipe, wherein 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 jackscrew devices (205) which are oppositely arranged, the jackscrew devices at the two ends move oppositely to match with the tightly-propped pipe head, one main pipe clamping jaw device is provided with a rotary driving device (207) for driving the main pipe to circumferentially rotate, the 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 top parts of the pipe head welding rack and the branch pipe welding rack are respectively provided with a smoke discharging bin (201), and a smoke discharging pipe is arranged above the smoke discharging bin;

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

4. An automatic welding continuous production line according to claim 3, characterized in that: the clamping jaw device (206) is responsible for 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) of setting in opposite directions and indent, and first arc clamping jaw is fixed continuous with the locating rack front side, and 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 clamping roller (264) that two upper and lower set up on the opposite faces of first arc clamping jaw and second arc clamping jaw, four clamping roller form the centre gripping space that the centre gripping was responsible for.

5. An automatic welding continuous production line according to claim 3, characterized in that: the rotary driving device (207) comprises a supporting frame (272) connected with a positioning frame of the main pipe clamping jaw device, a supporting cylinder (271) for 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 gap between the two driven wheels is set as a main pipe placing part, a driving wheel (274) for driving 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 (273).

6. An automatic welding continuous production line according to claim 3, characterized in that: the jackscrew device (205) is including symmetry setting up jackscrew cylinder (251) in crane top side, and the flexible axial back of two jackscrew cylinders sets up, 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 connecting seat (253), and the jackscrew slider is equipped with conical head (254) of jacking body both ends tube head through the connecting seat.

7. An automatic welding continuous production line according to claim 3, characterized in that: the main pipe welding mechanism (204) comprises a main pipe welding frame, the upper part of the main pipe welding frame is obliquely arranged towards the welding direction, an oblique sliding rail is arranged on the main pipe welding frame and is provided with a welding sliding block along the length direction of the main pipe welding frame, the welding sliding block is driven by a welding cylinder (241), a guide plate (242) is arranged on the welding sliding block, a welding gun (243) is horizontally fixed on the guide plate, the welding gun comprises two groups of welding gun heads which are arranged in a Y shape, the same group of welding gun heads are always positioned above a jackscrew device on the same side, and the other end of the welding gun is connected with an air supply device through a mixed air pipe.

8. An automatic welding continuous production line according to claim 3, characterized in that: the main pipe wire feeding mechanism (203) comprises a main pipe wire feeding cylinder (231), clamping jaws (232) perpendicular to the axial direction of the cylinder are arranged at the lower end of a telescopic shaft of the main pipe wire feeding cylinder, a pipe head welding head (233) is clamped in the clamping jaws, the main pipe wire feeding device further comprises a pipe head wire disc (234), one side of the pipe head wire disc is provided with a group of wire feeding wheels which rotate in opposite directions, the two wire feeding wheels rotate in opposite directions to drive welding wires to be output, and the welding wires penetrate through the wire guide pipe and penetrate out of the pipe head welding head.

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

10. The automatic welding continuous production line according to claim 9, characterized in that: the pipe fitting transfer device (6) comprises a transfer support frame, wherein two transfer guide rails (601) which are parallel to each other are arranged at the top of the transfer support frame, are arranged above the pipe fitting discharge part and the pipe fitting storage part, and are arranged in a cross shape with a pipe fitting 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 one side, close to the pipe fitting discharge part, of the finished product storage platform, and a row of limit upright posts (702) are arranged on the table top of one side, far away from the pipe fitting discharge part, of the finished product storage platform.