CN115519288A

CN115519288A - Continuous welding method and continuous welding device for automatic butt joint of workpieces

Info

Publication number: CN115519288A
Application number: CN202211284872.6A
Authority: CN
Inventors: 傅勇刚; 冯均发
Original assignee: Jiangsu Handijack Machinery Co ltd
Current assignee: Jiangsu Handijack Machinery Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2022-12-27

Abstract

The invention discloses a continuous welding method and a continuous welding device for automatic butt joint of workpieces, comprising the following steps: a plurality of welding sites are arranged on a continuously rotating disc at equal intervals, two workpieces to be welded are sequentially and simultaneously fed to each passing welding site on one side of the disc, and a welding robot is arranged on the upstream side of a feeding position in the rotating direction of the disc; after feeding, splicing the welding parts of the two workpieces to be welded before the two workpieces to be welded are rotationally conveyed to the position of the welding robot; when the welding point rotates to the position of the welding robot, the disc stops rotating; and the welding robot welds the spliced workpieces, blanking is performed after welding is completed, and the disc continues to rotate after blanking. And is provided with: rotating disc, welding set, automatic butt joint subassembly. The invention solves the problem of inaccurate butt joint of workpieces caused by tight feeding, and enhances the continuity of welding.

Description

Continuous welding method and continuous welding device for automatic butt joint of workpieces

Technical Field

The invention relates to the technical field of welding, in particular to a continuous welding method and a continuous welding device for automatic butt joint of workpieces.

Background

Welding is a process technology that mainly combines two workpieces, and the existing automatic welding technology is mainly characterized in that the main welding actions (igniting electric arc and feeding welding rod) are automatically completed by a machine, and the automatic welding technology is called automatic welding.

The application of automatic welding technology on the production line is particularly important, but the welding sites of workpieces to be welded are butted in a manner of clamping and feeding by a manipulator or the workpieces are assembled on a clamp so as to complete the preparation work of automatic welding. The feeding mode comprises the steps of feeding, welding and returning to the feeding position after welding is finished, and obviously, the process of finishing one welding process comprises a waiting feeding process, a feeding transfer process, an assembling clamp process and a welding process after the waiting feeding process, the feeding transfer process, the assembling clamp process and the welding process.

Therefore, the automatic welding technology in the prior art has a long period for completing one welding action due to the waiting process for feeding and assembling before the welding action, and the continuity of the whole welding process is poor.

Disclosure of Invention

The invention aims to provide a continuous welding method and a continuous welding device for automatic butt joint of workpieces, so as to solve the technical problem of inaccurate butt joint of the workpieces caused by tight feeding in the welding process in the prior art.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

the invention provides a continuous welding method, which comprises the following steps:

a plurality of welding sites are arranged on a continuously rotating disc at equal intervals, two workpieces to be welded are sequentially and simultaneously fed to each passing welding site on one side of the disc, and a welding robot is arranged on the upstream side of a feeding position in the rotating direction of the disc;

after feeding, splicing the welding parts of the two workpieces to be welded before the two workpieces to be welded are rotationally conveyed to the position of the welding robot;

when the welding point rotates to the position of the welding robot, the disc stops rotating;

and welding the spliced workpieces, blanking after welding, and continuously rotating the disc after blanking.

The invention also provides a continuous welding device for automatic butt joint of workpieces, which comprises:

the welding device comprises a rotating disc, a welding device and a welding device, wherein a plurality of welding sites are arranged on the rotating disc at equal intervals, and the rotating disc can intermittently rotate and stop at a constant speed;

the welding robot is arranged on one side of the rotating disc, when each welding point rotates to a position opposite to the welding robot, the rotating disc stops moving and restarts to rotate after the welding robot finishes welding;

and the automatic butt joint assembly is arranged at each welding site and is used for simultaneously receiving two workpieces to be welded and butt-jointing the welding parts of the two workpieces.

As a preferred scheme of the present invention, the automatic docking assembly includes two clamping tracks rotatably disposed on the rotating disk through a driving device, the driving device is fixedly disposed on the rotating disk through a base and rotates along with the rotating disk, and the base is mounted on the welding site;

the clamping rails are parallel to each other and simultaneously receive the two workpieces to be welded, and when the base is gradually close to the welding robot, the driving device drives the two clamping rails to rotate in opposite directions and drives the welding positions of the two workpieces to be welded to be attached to each other.

As a preferred scheme of the invention, the driving device comprises two gears which are rotatably mounted on the base through transmission shafts respectively, the two gears are fixedly connected with the clamping tracks respectively, a gear plate is arranged between the two gears in a meshing manner, the gear plate is connected with a contraction pump which drives the gear plate to move back and forth, the transmission shaft penetrates through the upper surface of the base and is rotatably arranged inside the base, and the gear plate drives the two clamping tracks to rotate.

As a preferable scheme of the present invention, the inner wall of the clamping rail is connected with a micro-pressure plate through a spring, two adjacent micro-pressure plates are attached to each other but not fixedly disposed, and when the workpiece to be welded is pushed into the space between the micro-pressure plates from the end of the clamping rail, the micro-pressure plate clamps and fixes the workpiece to be welded.

As a preferable scheme of the invention, the micro-pressure plate is a stepped plate, and the distance between the end of the micro-pressure plate close to the center of the rotating disc and the clamping track is the largest, so that the inner diameter of the clamping track is reduced from outside to inside in sequence.

As a preferable scheme of the present invention, the welding robot further includes a feeding mechanism and a discharging mechanism, the feeding mechanism and the discharging mechanism are both disposed on the periphery of the rotating disk and both located on the moving path of the welding site, the discharging mechanism is located at the welding robot, and the feeding mechanism is located downstream of the discharging mechanism.

As a preferred scheme of the invention, the feeding mechanism comprises a support, material carrying plates are symmetrically mounted at two ends of the support, the two material carrying plates are obliquely arranged towards the center of the support, two parallel rotating plates are arranged between the two material carrying plates, the two rotating plates are rotatably arranged on the support through a supporting rod, one ends of the two rotating plates can be respectively abutted against the clamping track, and a pump body is arranged at the other ends of the two rotating plates and drives the end parts of the rotating plates to move up and down;

the rotating plate is provided with a limiting frame and a limiting rod vertically installed at the tail end of the limiting frame downwards, and when one end, close to the pump body, of the rotating plate moves downwards, the limiting rod can penetrate through the end portion of the material carrying plate.

As a preferable scheme of the present invention, a sliding platform is disposed between the rotating plate and the clamping track, a pushing plate is disposed on the sliding platform, a telescopic pump is connected to the lower end of the pushing plate through a strip-shaped opening and penetrating through the sliding platform, the telescopic pump is disposed on the bracket, and the end of the telescopic pump is rotatably connected to the pushing plate, the telescopic pump is connected to the bracket through a sliding wheel, and the sliding wheel drives the pushing plate to slide on the strip-shaped opening.

As a preferable scheme of the present invention, the discharging mechanism includes a downward inclined slide way and a telescopic hook arranged at an end of the slide way and sliding, an end of the slide way is attached to a peripheral side of the rotating disc, when the welding point moves to the slide way, the welding robot welds an attachment position of two workpieces to be welded to become a welded workpiece, and the telescopic hook passes upward through a joint of the welded workpieces and drives the welded workpiece to slide toward a bottom of the slide way.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the preparation work such as feeding, workpiece butt joint and the like can be completed at the same time of welding by feeding through the turntable, the feeding action and the workpiece butt joint action can be completed in sufficient time in the welding process, and the problem of inaccurate workpiece butt joint caused by tight feeding is solved.

2. According to the invention, through the intermittent rotation of the turntable, a plurality of workpieces can be simultaneously subjected to the processes of feeding, butt joint and welding on the turntable, and the three actions can be converted through rotation after the actions are finished, so that the welding continuity is improved; the automatic butt joint assembly is arranged, so that the workpieces can be automatically butted in the process of being conveyed to the welding robot, the butt joint process is parallel to the workpiece conveying, and the waiting time is reduced; the feeding device can feed two workpieces at the same time, effectively saves the feeding time and further improves the working efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic view of a continuous welding apparatus for providing automatic butt-joint of workpieces according to the present invention;

FIG. 2 is a schematic diagram of the present invention providing an automatic docking assembly and drive mechanism;

FIG. 3 is a schematic side view of the clamping rail according to the present invention;

FIG. 4 is a schematic view of the loading mechanism of the present invention;

FIG. 5 is a schematic structural view of a sliding platform according to the present invention;

FIG. 6 is a schematic structural view of a blanking mechanism provided in the present invention; (ii) a

FIG. 7 is a schematic view of the present invention providing a rotating disk;

fig. 8 is a schematic structural view of a welding apparatus according to the present invention.

The reference numerals in the drawings denote the following, respectively:

1-a welding robot; 2-rotating the disc; 3-a weld site; 4-a cylindrical workpiece; 6-automatic docking assembly; 7-a feeding mechanism; 8-a blanking mechanism; 9-a drive device; 11-a micro-press plate; 12-a spring; 13-a sliding platform; 14-a push plate; 15-strip-shaped openings; 16-a telescopic pump; 17-a sliding wheel; 18-a rotational drive;

101-a first telescoping rod; 102-a second telescoping rod; 103-a welding head;

301-a table top; 302-a rotating gear; 303-rotating the drive gear;

601-a base; 602-a clamping rail;

701-a bracket; 702-a material carrying plate; 703-a rotating plate; 704-a support bar; 705-pump body; 706-a limiting frame; 707-a stop lever;

801-a slide; 802-telescoping hook;

901-a drive shaft; 902-gear; 903-gear plate; 904-shrink pump.

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.

The invention provides a continuous welding method which is characterized by comprising the following steps:

and the welding robot welds the spliced workpieces, blanking is performed after welding is completed, and the disc continues to rotate after blanking.

According to the invention, the preparation work such as feeding, workpiece butt joint and the like can be completed at the same time of welding by feeding through the turntable, and the feeding action and the workpiece butt joint action can be completed in sufficient time in the welding process, so that the problem of inaccurate workpiece butt joint caused by tight feeding is reduced.

Specifically, the workpiece is fixed on the site, and the production flow of feeding, butt joint, welding and discharging and then feeding is closed by the aid of cyclic movement of the site, so that the times of feeding and discharging of the workpiece are reduced, the time of feeding and discharging the workpiece during process conversion is shortened, and the probability of position errors of the workpiece in the moving process is reduced.

In the present invention, the feeding may be to feed two workpieces separately, or to feed two workpieces simultaneously, but in order to improve the feeding efficiency and achieve continuous welding of the workpieces, a specific scheme for simultaneously feeding and butting the workpieces is provided below.

In this embodiment, a disc structure is provided, and this disc structure is provided with a plurality of welding sites, and the welding site follows the disc and rotates and experiences in proper order through material loading, work piece welding point butt joint, welding and unloading in the rotation process to carry out the material loading once more after the unloading is accomplished, accomplish the continuous welding of work piece.

The key point of the invention is that two workpieces to be welded are fed and fixed simultaneously, butt joint of butt joints is completed before welding action without waiting, and the workpieces are automatically reset to a feeding position after welding is completed to carry out feeding, butt joint and welding action of the next group of workpieces, so that welding time is saved, butt joint angle and position of the workpieces can be determined during welding, and welding precision of the workpieces is further improved.

The difficulty of the present invention is to provide a method, which enables the loading, butt joint and welding of workpieces to be performed simultaneously, ensures that the workpieces have completed the butt joint of the butt joint to be welded before welding, automatically moves to the loading position after welding, performs circular loading, and realizes the automatic butt joint of the welding point of the workpieces before welding, which is difficult to realize by common devices, for this reason, as shown in fig. 1 to 8, the present invention also provides a continuous welding device for the automatic butt joint of workpieces, which is characterized by comprising:

the welding device comprises a rotating disc 2, wherein a plurality of welding sites 3 are arranged on the rotating disc 2 at equal intervals, and the rotating disc 2 can intermittently rotate and stop at a constant speed.

Welding robot 1 sets up one side of rotating disc 2, each welding locus 3 rotates to just when just right welding robot 1's position, rotating disc 2 stop motion and be in welding robot 1 accomplishes the welding back restart rotation.

And the automatic butt joint assembly 6 is arranged at each welding site 3, and the automatic butt joint assembly 6 is used for simultaneously receiving two workpieces to be welded and butt joint welding parts of the two workpieces.

Specifically, the device realizes the cyclic work of welding sites in a circular rotation mode, and the automatic butt joint components 6 are adopted to realize the feeding and butt joint of workpieces, in the embodiment, each welding site 3 is provided with one automatic butt joint component 6, the number of the automatic butt joint components 6 is at least two, when one automatic butt joint component 6 rotates to the position of the welding robot 1, the automatic butt joint component 6 is set as an A butt joint assembly part, the rotating disc 2 stops rotating, the welding robot 1 welds the welding position of the workpiece to be welded, which is automatically butted on the A butt joint assembly part, at the moment, the other welding site 3 located at the downstream of the welding robot 1 is feeding, the automatic butt joint component 6 is set as a B butt joint assembly part, and the B butt joint assembly part feeds the two workpieces in a parallel mode.

After welding, blanking is carried out on the welded workpiece located on the A butt joint assembly part, the rotating disc 2,A butt joint assembly part is started again to move to the downstream, namely the position of the B butt joint assembly part, at the moment, two workpieces which are fixedly clamped are arranged on the B butt joint assembly part, the B butt joint assembly part gradually moves to the A butt joint assembly part, the angles of the two workpieces to be welded are adjusted in the moving process, welding points of the workpieces are in contact with each other, butt joint of specific angles is achieved, after the B butt joint assembly part moves to the position of the welding robot 1, the rotating disc 2 stops rotating, the welding robot 1 welds the workpieces on the B butt joint assembly part, and at the moment, the A butt joint assembly part finishes feeding.

The invention realizes the feeding and the assembly of the workpieces to be welded by the intermittent rotation of the welding sites and the disc, and simultaneously welds the assembled workpieces, thereby greatly improving the welding efficiency.

The difficulty of the automatic butt joint action is to clamp two workpieces simultaneously, butt joint welding points of the two workpieces together at a specific angle before welding, and keep the fixing action of the two workpieces to be welded unchanged during welding. In order to realize the above operation, a general apparatus has a complicated operation and a low degree of automation, and it is difficult to improve the welding efficiency.

Further, in order to solve the problem of automatic docking, the automatic docking assembly 6 includes two clamping rails 602 rotatably disposed on the rotating disk 2 through a driving device 9, the driving device 9 is fixedly disposed on the rotating disk 2 through a base 601 and rotates along with the rotating disk 2, and the base 601 is mounted on the welding site 3;

the clamping rails 602 are parallel to each other and simultaneously receive two workpieces to be welded, and when the base 601 gradually approaches the welding robot 1, the driving device 9 drives the two clamping rails 602 to rotate in opposite directions and drives the welding positions of the two workpieces to be welded to be attached to each other.

When the feeding is completed, the clamping rails 602 respectively clamp the workpieces to be welded on two sides, the rotating disc 2 rotates after the clamping is completed, the two clamping rails 602 symmetrically rotate under the driving of the driving device 9 in the rotating process of the rotating disc 2, the two parallel ends of the workpieces to be welded are butted together, the two angles between the workpieces to be welded are the angle of the extension line of the two clamping rails 602, one ends of the workpieces to be welded are butted, one ends of the workpieces to be welded are mutually extruded under the action of force, the other ends of the workpieces to be welded are butted against the bottom of the clamping rails 602, the angles of the workpieces to be welded are not easy to change, gaps do not easily appear at the butted ends, and the welding effect is improved.

The clamping rail 602 clamps and fixes the workpiece to be welded in the whole process.

When the butt joint of two workpieces to be welded is completed, the rotating disc 2 drives the clamping rail 602 to enter the welding point 3 which is closest to the welding robot 1, the welding robot 1 welds the butt joint, and blanking is directly completed at the point after welding is completed.

Through the mutually parallel clamping rails, a pair of two workpieces to be welded which are simultaneously blanked enter the clamping rails at the same time and are clamped at the same time, and the loading and clamping efficiencies are high; in the process of moving to the welding position nearest to the welding robot, under the driving of the driving device, the two clamping rails rotate simultaneously and can connect the butt joint points of the two workpieces to be welded together, automatic butt joint of the two workpieces to be welded at a specific angle is achieved, the workpieces are clamped and fixed in the whole process until blanking is finished after welding, the operation is simple, the problem of complicated operation is effectively solved, and the welding efficiency is improved.

The workpieces are various in types and shapes, for convenience of understanding, the columnar workpieces 4 are used for demonstration in the embodiment, the end portions of the two columnar workpieces 4 are provided with the inclined angles, and the two inclined angles are attached together at a specific angle to realize butt joint of welding points.

Specific examples are as follows: the cylindrical workpiece A enters the clamping track 602 on the right side, the cylindrical workpiece B enters the clamping track 602 on the left side, one end of the cylindrical workpiece 4 is arranged at the end of the clamping track 602 in an abutting mode, the other end of the cylindrical workpiece passes through the clamping track 602 and is arranged in a suspending mode, when the clamping track 602 rotates on the fixed shell 601, the suspended end portions of the cylindrical workpiece A and the cylindrical workpiece B gradually approach each other in the rotating process and finally abut against each other, the angle is a welding angle, the welding angle is arranged on the outer ring of the rotating disc 3 in a suspending mode, and the angle of the included angle between the two clamping tracks 602 is identical to the angle required to weld the cylindrical workpiece A and the cylindrical workpiece B.

When the automatic docking assembly 6 is approaching the welding robot 1, the two holding rails 602 gradually change from a state of being parallel to each other to a state of being inclined until being fixed, and when the automatic docking assembly 6 gradually moves away from the welding robot 1, the two holding rails 602 gradually change from a state of being inclined to a state of being parallel to each other and maintain the parallel state.

In order to enable the clamping track 602 to realize the above actions, the driving device 9 includes two gears 902 rotatably mounted on the base 601 through transmission shafts 901, the two gears 902 are fixedly connected with the clamping track 602, a gear plate 903 is engaged between the two gears 902, the gear plate 903 is connected to a retraction pump 904 that drives the gear plate 903 to move back and forth, the transmission shafts 901 penetrate through the upper surface of the base 601 to be rotatably disposed inside the base 601, and the gear plate 903 drives the two clamping tracks 602 to rotate.

The angle between the two clamping rails 602 may be determined according to the displacement distance of the gear plate 903.

Further, in order to adapt to workpieces with various diameters, the inner wall of the clamping track 602 is connected with the micro-pressing plates 11 through the springs 12, the two adjacent micro-pressing plates 11 are attached to each other but not fixedly arranged, and when the workpiece to be welded is pushed into the space between the micro-pressing plates 11 from the end part of the clamping track 602, the micro-pressing plates 11 clamp and fix the workpiece to be welded.

The work piece gets into from one side of centre gripping track 602, extrudees minute clamp plate 11 and compression spring 12, makes the distance increase between the minute clamp plate 11, and the work piece extrusion sets up between minute clamp plate 11, and spring 12 inwards compresses deformation, and the work piece is extruded to the elasticity of spring 1212, realizes the centre gripping to the work piece, and can the work piece of multiple diameter of adaptation, and the diameter of work piece is big more, and the centre gripping effect is better, but the diameter at work piece centre gripping position must not exceed the internal diameter of centre gripping track 602.

Further, in order to improve the clamping effect of the micro-pressure plate 11, the micro-pressure plate 11 is a stepped plate, and the micro-pressure plate 11 is close to the end of the circle center of the rotating disc 2 and the distance between the clamping tracks 602 is the largest, so that the inner diameter of the clamping tracks 602 is reduced from outside to inside in sequence.

The elastic force inside the clamping rail 602 is far greater than that of the end portion, the more the workpiece moves towards the inside of the clamping rail 602, the greater the resistance of the workpiece, and after the workpiece moves to a certain degree, the workpiece cannot move inwards any more, so that the workpiece can be clamped by the micro-pressure plate 11.

In industrial production, two workpieces made of metal materials are connected together without separation of welding technology. The traditional welding method adopts workers to weld, the parts to be welded of two workpieces are arranged together in advance in a leaning mode, and the workers weld the workpieces by holding electric welding. Violent sparks, sprayed impurities and the like can appear in the welding process, if manual welding is adopted, the health of workers can be influenced, new workpieces need to be treated after welding is completed every time, time and labor are wasted, and the large-scale production of products is not facilitated.

Above disc can be accomplished to the unloading under manual work or mechanical cooperation, but in order to practice thrift the human cost, improves staff's health level, increases automatic unloader on this welding system now, makes it match entire system.

This device still includes feed mechanism 7 and unloading mechanism 8, feed mechanism 7 with unloading mechanism 8 all sets up the week side of rotating disc 2 just all is located on welding point 3's the moving path, unloading mechanism 8 is located welding robot 1 department, feed mechanism 7 is located unloading mechanism 8's low reaches.

Further, the feeding mechanism 7 includes a support 701, material-carrying plates 702 are symmetrically installed at two ends of the support 701, the two material-carrying plates 702 are obliquely arranged toward the center of the support 701, two parallel rotating plates 703 are arranged between the two material-carrying plates 702, the two rotating plates 703 are both rotatably arranged on the support 701 through a support rod 704, one ends of the two rotating plates 703 can be respectively abutted to the clamping rail 602, a pump body 705 is arranged at the other ends of the two rotating plates 703, and the pump body 705 drives the end portions of the rotating plates 703 to move up and down;

the rotating plate 703 is provided with a limiting frame 706 and a limiting rod 707 vertically installed at the end of the limiting frame 706 downwards, and when one end of the rotating plate 703 close to the pump body 705 moves downwards, the limiting rod 707 can pass through the end of the material carrying plate 702.

This practicality is provided with about two year flitchs 702, and a plurality of columnar order work pieces A are placed to the left year flitch 702 of drawing, sets up and places a plurality of columnar order work pieces B at the year flitch 702 on drawing right side, and columnar order work piece A and columnar order work piece B all slide to the bottom of carrying flitch 702 under the effect of gravity, and first columnar order work piece A and columnar order work piece B all laminate with the side of rotor plate 703.

When the end of the rotating plate 703 connected to the left material carrying plate 702 descends, the end of the rotating plate 703 descends to the lower end of the lowest end of the material carrying plate 702, the limiting rod 707 drives the columnar workpiece a to move from the material carrying plate 702 to the rotating plate 703, and after the columnar workpiece a moves up from the end of the rotating plate 703, the columnar workpiece a moves to the other end of the rotating plate 703 under the action of gravity, that is, the columnar workpiece a is located on the left clamping track 602. Similarly to the other rotating plate 703, the cylindrical workpiece B moves to the other end of the rotating plate 703, i.e., the clamping rail 602 on the right side, under the action of gravity.

Further, in order to smoothly push the workpiece to the rail, a sliding platform 13 is arranged between the rotating plate 703 and the clamping rail 602, a pushing plate 14 is arranged on the sliding platform 13, the lower end of the pushing plate 14 penetrates through the sliding platform 13 through a strip-shaped opening 15 to be connected with a telescopic pump 16, the telescopic pump 16 is arranged on the support 701, the end of the telescopic pump is rotatably connected with the pushing plate 14, the telescopic pump 16 is connected with the support 701 through a sliding wheel 17, and the sliding wheel 17 drives the pushing plate 14 to slide on the strip-shaped opening 15.

In the initial state, the telescopic pump 16 is arranged at the top end of the strip-shaped opening 15, the telescopic pump 16 contracts, and the push plate 14 contracts and is arranged on the sliding platform 13 without interfering the sliding of the workpiece. When one end of the workpiece slides to the extension of the micro-pressure plate 11 and the other end of the workpiece slides to the strip-shaped opening 15, the sliding of the workpiece may stop due to a certain pressure of the micro-pressure plate 11. In order to push the end part of the workpiece to completely slide into the rail, the telescopic pump 16 extends, the push plate 14 is vertically arranged on the sliding platform 13, the sliding wheel 17 drives the telescopic pump 16 to slide at the moment, and the push plate 14 slides on the strip-shaped opening 15 and extrudes the workpiece, so that the workpiece completely enters the rail.

In this embodiment, the blanking mechanism 8 includes a downward inclined slide 801 and a telescopic hook 802 provided at the end of the slide 801, the end of the slide 801 is attached to the periphery of the rotating disk 2, when the welding point 4 moves to the slide 801, the welding robot 1 welds the attachment positions of the two workpieces to be welded to form a welded workpiece, and the telescopic hook 802 passes upward through the joint of the welded workpieces and drives the welded workpieces to slide toward the bottom of the slide 801.

The telescopic hook 802 has two motion states, namely telescopic motion and slideway motion, and after welding of the welding angle is finished, the telescopic hook 802 slides to the lower end of the welding angle from the lower end firstly, then extends to be arranged at the inner angle of the welding angle, and reversely slides again to pull out the welded workpiece from the micro-pressure plate 11. After the blanking is finished, the telescopic hook 802 contracts to the initial state and waits for the next blanking.

In the present embodiment, the welding robot 1 includes a first telescopic rod 101 disposed at an inner ring portion of the rotating ring 3 and a second telescopic rod 102 perpendicularly connected to the first telescopic rod 101, the second telescopic rod 102 is parallel to a plane where the rotating ring 3 is located, a welding head 103 is disposed at an end portion of the second telescopic rod 102, and the welding head 103 can be extended to a virtual welding point and moved on a portion to be welded of a workpiece.

Controllable pump bodies are arranged in the first telescopic rod 101 and the second telescopic rod 102, the first telescopic rod 101 limits the height of the welding head 103, and the second telescopic rod 102 limits the length of the welding head 103 from a workpiece.

Preferably, a rotation driving device 18 is arranged between the welding head 103 and the second telescopic rod 102, and the rotation driving device 18 drives the welding head 103 to rotate. When the welding head 103 rotates, multidirectional welding can be achieved for the upper and lower parts of the workpiece joint.

By the continuous welding method and the continuous welding device for automatic butt joint of the workpieces, the feeding action and the workpiece butt joint action can be completed in sufficient time in the welding process, and the problem of inaccurate butt joint of the workpieces caused by tight feeding is solved; the workpieces can be simultaneously subjected to loading, butt joint and welding actions on the turntable, and the three actions can be converted through rotation after the actions are finished, so that the welding continuity is improved; the automatic butt joint assembly is arranged, so that the workpieces can be automatically butted in the process of being conveyed to the welding robot, the butt joint process is parallel to the workpiece conveying, and the waiting time is reduced; the feeding device can feed two workpieces at the same time, effectively saves the feeding time and further improves the working efficiency.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. A continuous welding method, comprising the steps of:

2. A continuous welding device for automatically butting workpieces is characterized by comprising:

the welding device comprises a rotating disc (2), wherein a plurality of welding sites (3) are arranged on the rotating disc (2) at equal intervals, and the rotating disc (2) can intermittently rotate and stop at a constant speed;

the welding robot (1) is arranged on one side of the rotating disc (2), when each welding point (3) rotates to a position opposite to the welding robot (1), the rotating disc (2) stops moving and restarts to rotate after the welding robot (1) finishes welding;

and the automatic butt joint assembly (6) is arranged at each welding site (3), and the automatic butt joint assembly (6) is used for simultaneously receiving two workpieces to be welded and butt joint the welding positions of the two workpieces.

3. A continuous welding device for the automatic docking of workpieces according to claim 2, characterized in that said automatic docking assembly (6) comprises two clamping rails (602) rotatably mounted on said rotating disc (2) by means of a driving device (9), said driving device (9) being fixedly mounted on said rotating disc (2) by means of a base (601) and rotating with said rotating disc (2), said base (601) being mounted on said welding site (3);

the clamping rails (602) are parallel to each other and simultaneously receive the two workpieces to be welded, and when the base (601) is gradually close to the welding robot (1), the driving device (9) drives the two clamping rails (602) to rotate in opposite directions and drives the welding positions of the two workpieces to be welded to be attached to each other.

4. The continuous welding device for the automatic butt joint of the workpieces as claimed in claim 3, wherein the driving device (9) comprises two gears (902) rotatably mounted on the base (601) through transmission shafts (901), the two gears (902) are fixedly connected with the clamping rails (602), a gear plate (903) is engaged between the two gears (902), the gear plate (903) is connected with a contraction pump (904) driving the gear plate (903) to move back and forth, the transmission shafts (901) penetrate through the upper surface of the base (601) and are rotatably disposed inside the base (601), and the gear plate (903) drives the two clamping rails (602) to rotate.

5. The continuous welding device for automatic butt joint of workpieces as claimed in claim 4, wherein a micro-pressure plate (11) is connected to the inner wall of the clamping rail (602) through a spring (12), two adjacent micro-pressure plates (11) are attached to each other but not fixedly arranged, and when the workpiece to be welded is pushed into the micro-pressure plates (11) from the end of the clamping rail (602), the micro-pressure plates (11) clamp and fix the workpiece to be welded.

6. The continuous welding device for the automatic butt joint of workpieces as claimed in claim 5, wherein the micro-pressure plate (11) is a stepped plate, and the distance between the end part of the micro-pressure plate (11) close to the center of the rotating disk (2) and the clamping track (602) is the largest, so that the inner diameter of the clamping track (602) is reduced from outside to inside in sequence.

7. The continuous welding device for automatic workpiece butt joint according to claim 3, further comprising a feeding mechanism (7) and a discharging mechanism (8), wherein the feeding mechanism (7) and the discharging mechanism (8) are both disposed on the periphery of the rotating disc (2) and are both located on the moving path of the welding site (3), the discharging mechanism (8) is located at the welding robot (1), and the feeding mechanism (7) is located at the downstream of the discharging mechanism (8).

8. The continuous welding device for the automatic butt joint of the workpieces as claimed in claim 7, wherein the feeding mechanism (7) comprises a support (701), material carrying plates (702) are symmetrically installed at two ends of the support (701), the two material carrying plates (702) are arranged in an inclined manner towards the center of the support (701), two parallel rotating plates (703) are arranged between the two material carrying plates (702), the two rotating plates (703) are both rotatably arranged on the support (701) through a support rod (704), one ends of the two rotating plates (703) can respectively abut against the clamping track (602), a pump body (705) is arranged at the other end of the two rotating plates (703), and the pump body (705) drives the end portions of the rotating plates (703) to move up and down;

the rotating plate (703) is provided with a limiting frame (706) and a limiting rod (707) vertically installed at the tail end of the limiting frame (706) downwards, and when one end of the rotating plate (703), which is close to the pump body (705), moves downwards, the limiting rod (707) can penetrate through the end part of the material carrying plate (702).

9. The continuous welding device for the automatic butt joint of the workpieces as claimed in claim 8, wherein a sliding platform (13) is arranged between the rotating plate (703) and the clamping track (602), a pushing plate (14) is arranged on the sliding platform (13), the lower end of the pushing plate (14) penetrates through the sliding platform (13) through a strip-shaped opening (15) to be connected with a telescopic pump (16), the telescopic pump (16) is arranged on the support (701) and the end of the telescopic pump is rotatably connected with the pushing plate (14), the telescopic pump (16) is connected with the support (701) through a sliding wheel (17), and the sliding wheel (17) drives the pushing plate (14) to slide on the strip-shaped opening (15).

10. The continuous welding device for the automatic butt joint of the workpieces as claimed in claim 7, wherein the blanking mechanism (8) comprises a slide way (801) which is inclined downwards and a telescopic hook (802) which is arranged at the end of the slide way (801) and slides, the end of the slide way (801) is attached to the periphery of the rotating disc (2), when the welding site (4) moves to the slide way (801), the welding robot (1) welds the attachment positions of the two workpieces to be welded to form a welded workpiece, and the telescopic hook (802) penetrates upwards through the connection position of the welded workpieces and drives the welded workpiece to slide towards the bottom of the slide way (801).