CN109623152B

CN109623152B - Welding auxiliary device, welding system and welding method

Info

Publication number: CN109623152B
Application number: CN201910113914.1A
Authority: CN
Inventors: 韩晓辉; 吕安松; 马国龙; 李刚卿
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-02-14
Filing date: 2019-02-14
Publication date: 2021-08-24
Anticipated expiration: 2039-02-14
Also published as: CN109623152A

Abstract

The invention relates to the technical field of welding equipment, in particular to a welding auxiliary device, welding equipment and a welding method. In the auxiliary device, a guide supporting component is connected with a synchronous beam, two groups of flanging compressing components are symmetrically arranged on two sides of the guide supporting component, and two groups of flanging compressing components are respectively connected with the synchronous beam so as to form welding channels on the inner sides and/or the outer sides of the two groups of flanging compressing components respectively, thereby ensuring that when a plurality of welding energy beams are simultaneously injected, each welding energy beam can synchronously move in each corresponding welding channel and form symmetrical welding seams on each flanging. The device can realize the synchronous welding of the flanges on two sides of the component by one-time walking, compared with the prior art, the welding equipment adopting the auxiliary device has symmetrical and attractive welding seams and small welding deformation of the flanges, thereby not only improving the welding efficiency, but also greatly improving the welding quality.

Description

Welding auxiliary device, welding system and welding method

Technical Field

The invention relates to the technical field of welding equipment, in particular to a welding auxiliary device, welding equipment and a welding method.

Background

The laser welding process has become one of the key welding process methods in the welding process of the side wall plate of the rail vehicle due to the outstanding advantages of high welding speed, good processing flexibility, small deformation after welding and the like. With the rapid development and popularization of high-power fiber lasers in recent years, the laser welding manufacturing technology of the side wall plate of the rail vehicle is greatly developed.

In the side wall panel structure, the pi-shaped sheet metal component is a general component form. The two sides of the member are respectively provided with flanges, and the member is welded on the inner side of the wallboard through the flanges, so that the effect of improving the strength of the whole member of the wallboard is achieved. At present, in a laser welding process for a pi-shaped component, the following processes are generally adopted for welding:

one process is as follows: and a separately arranged tool is adopted to press the flanging of the pi-shaped component and the bottom plate tightly so as to implement welding, but the welding efficiency is low.

The other process comprises the following steps: and welding the flanges at the two sides of the Pi-shaped component one by one in a welding and pressing mode. As is known, although the welding deformation of laser welding is small, the welding deformation is also a main welding quality target to be controlled for structural members with more welding seams, such as side wall panels. The adoption of the process of welding one by one along with welding compaction can cause the welding deformation of the front welding line to influence the shape precision of the pi-shaped component, cause the control difficulty of the lap gap of the welding line in the subsequent procedure in the welding compaction process, influence the welding quality, and simultaneously reduce the welding efficiency in a one by one welding mode.

Therefore, how to reduce or even eliminate the influence of the flanging at the two sides of the pi-shaped component on the welding quality in the laser welding process for the side wall plate structure is one of the key problems to be solved at present.

Disclosure of Invention

Technical problem to be solved

The embodiment of the invention provides a welding auxiliary device, welding equipment and a welding method, which are used for solving the defects that in the prior art, the welding efficiency of a flanging is low during welding, and the welding quality is poor due to welding deformation.

(II) technical scheme

In order to solve the technical problem, the invention provides a welding auxiliary device which comprises a synchronous beam, guide supporting components and flanging pressing components, wherein the guide supporting components are connected with the synchronous beam, two groups of flanging pressing components are symmetrically arranged on two sides of the guide supporting components, the two groups of flanging pressing components are respectively connected with the synchronous beam, so that welding channels are respectively formed on the inner sides and/or the outer sides of the two groups of flanging pressing components.

In some embodiments, the flanging compressing assembly comprises a pressing wheel and an elastic compressing mechanism, the pressing wheel is connected with the synchronous beam through the elastic compressing mechanism, and the welding channel is formed between the guide supporting assembly and the pressing wheel.

In some embodiments, the elastic pressing mechanism includes a spring and a pressing connection column, one end of the pressing connection column is connected with the synchronization beam, and the other end of the pressing connection column is connected with the pressing wheel through the spring.

In some embodiments, the elastic pressing mechanism includes a buffer cylinder and a piston column, one end of the piston column is fixed on the synchronous beam, one end of the piston column is telescopically inserted into the buffer cylinder, and the buffer cylinder is connected with the pinch roller.

In some embodiments, the elastic pressing mechanism further includes a supporting shaft, one end of the supporting shaft is connected to the elastic pressing mechanism, and the other end of the supporting shaft is connected to the rotating shaft of the pressing wheel.

In some embodiments, the support shaft is inclined such that the pressing wheel is positioned in front of or behind the guide support assembly when moving.

In some embodiments, the guide support assembly comprises a guide connecting column, a guide spring and a guide pressure plate, wherein one end of the guide connecting column is connected with the synchronous beam, and the other end of the guide connecting column is connected with the guide pressure plate through the guide spring.

In some embodiments, two sides of the guide pressure plate are respectively provided with a baffle outwards.

The invention also provides welding equipment which comprises a welding transmitting device and the welding auxiliary device, wherein the welding transmitting device is used for transmitting a plurality of energy beams synchronously, and the energy beams are respectively injected into the welding channels arranged on the inner side and/or the outer side of the two groups of flanging pressing assemblies.

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

fixing guide support assemblies of the welding auxiliary devices on a member, and respectively pressing flanging pressing assemblies of the two groups of welding auxiliary devices on flanging at two sides of the member;

synchronously emitting a plurality of energy beams through a welding emitting device, wherein each energy beam is correspondingly emitted into a plurality of welding channels of the welding auxiliary device, and the welding channels are formed on the inner sides and/or the outer sides of the two groups of flanging pressing components respectively;

and moving the welding auxiliary device and the welding emitter in the same direction so as to enable the plurality of energy beams to synchronously move in the corresponding welding channels respectively.

(III) advantageous effects

The technical scheme of the invention has the following beneficial effects: the welding auxiliary device comprises a synchronous beam, a guide supporting assembly and flanging pressing assemblies, wherein the guide supporting assembly is connected with the synchronous beam, two groups of flanging pressing assemblies are symmetrically arranged on two sides of the guide supporting assembly, and the two groups of flanging pressing assemblies are respectively connected with the synchronous beam, so that two welding channels are respectively formed between the guide supporting assembly and the two groups of flanging pressing assemblies, and therefore when a plurality of welding energy beams are simultaneously injected, each welding energy beam can synchronously move in each corresponding welding channel and form symmetrical welding seams on each flanging. This device utilizes direction supporting component and turn-ups to compress tightly the subassembly can be respectively with the turn-ups top tight on the wallboard to the utilization is once walked the position and can be realized the turn-ups's of component both sides synchronous welding when the welding, can guarantee compressing tightly between turn-ups and the wallboard, prevent welding deformation, can carry out accurate direction to the welding direction again, compared with the prior art, the welding seam symmetry that adopts this auxiliary device's welding equipment to weld out is pleasing to the eye, turn-ups welding deformation volume is very little, thereby both improved welding efficiency, welding quality has been improved greatly again.

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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is one of front views of a laser welding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the direction A shown in FIG. 1;

FIG. 3 is a second front view of the laser welding apparatus according to the embodiment of the present invention;

fig. 4 is a schematic flow chart of a laser welding method according to an embodiment of the present invention.

Wherein, 1, a focusing lens; 2. an energy beam; 3. a synchronization beam; 4. pressing the connecting column; 5. a compression spring; 6. a support shaft; 7. a pinch roller; 8. wall plates; 9. a member; 9-1, flanging; 10. a guide pressure plate; 11. a guide spring; 12. a guide connecting column; 13. a piston post; 14. and a cushion cylinder.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; "notched" means, unless otherwise stated, a shape other than a flat cross-section. The terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the welding assistance device provided in the present embodiment includes a synchronization beam 3, a guide support assembly, and a burring pressing assembly. The direction supporting component is connected with synchronous beam 3, and two sets of turn-ups compress tightly the both sides that establish at the direction supporting component of subassembly symmetry, and two sets of turn-ups compress tightly the subassembly and are connected with synchronous beam 3 respectively. The structure of the auxiliary device enables the guide supporting component and the two flanging pressing components to form two welding channels respectively. During welding, the two welding energy beams 2 simultaneously emitted by the auxiliary device and the welding equipment can synchronously move along the same direction, so that when a plurality of welding energy beams 2 are simultaneously emitted, each welding energy beam 2 can synchronously move in each corresponding welding channel and form a symmetrical welding seam on each flanging 9-1.

In the embodiment, for example, the flange 9-1 of the pi-shaped member 9 is welded on the inner side surface of the wall plate 8, the member 9 comprises a main body beam and the flange 9-1, the cross section of the main body beam is door-shaped, as shown in fig. 1, the flanges 9-1 are respectively connected to the left side and the right side of the main body beam, and the flanges 9-1 are attached to the surface of the wall plate 8. The above-mentioned welding channels are located on the flanges 9-1 on both sides of the member 9, respectively.

The auxiliary device of this embodiment is pressed against the body beam of the member 9 by means of a guide support assembly which provides a guiding and supporting function for the movement of the auxiliary device during welding. The guide support component is used as a symmetry axis, and the flanging pressing components on the two sides can respectively tightly prop the flanging 9-1 on the wall plate 8. Channels which can be used for welding are respectively reserved on the inner side and/or the outer side of the two groups of flanging pressing assemblies. When two symmetrical energy beams 2 are emitted from the same emission position, preferably two energy beams 2 are respectively emitted into welding channels positioned at the inner sides of the two groups of flanging compressing assemblies; similarly, if the emission sources of the two symmetrical energy beams 2 are different, the two energy beams 2 can be injected into the welding channel on the inner side of the flanging compressing assembly and can also be injected into the welding channel on the outer side of the flanging compressing assembly. The present embodiment takes two symmetrical energy beams 2 emitted from the same emission position as an example to describe the use of the auxiliary device in detail: when the two welding energy beams 2 respectively enter the two welding channels, the two energy beams 2 (laser) simultaneously act on the flanging 9-1 at the two sides of the member 9, and the acting positions are positioned between the flanging pressing assembly and the guide supporting assembly.

During welding, the auxiliary device synchronously moves along with a welding emitter (such as a welding gun or a laser emitting head) in the same direction, so that synchronous welding of the flanges 9-1 at two sides of the component 9 can be completed by performing one-time welding displacement along the component 9. Therefore, the auxiliary device can ensure the compression between the flanging 9-1 and the wall plate 8, prevent welding deformation and accurately guide the welding direction, compared with the prior art, the welding equipment adopting the auxiliary device has symmetrical and attractive welding lines and small welding deformation of the flanging 9-1, thereby improving the welding efficiency and greatly improving the welding quality.

In some embodiments, the cuff pressing assembly includes a pressing wheel 7 and an elastic pressing mechanism. The pinch roller 7 is connected with the synchronous beam 3 through an elastic pressing mechanism, and a welding channel is formed between the guide supporting component and the pinch roller 7. When the auxiliary device moves, the pressing wheel 7 rolls and presses the flanging 9-1 on the wall plate 8, and at the moment, the elastic pressing mechanism can provide elastic pressing force for the pressing wheel 7 to drive the pressing wheel 7 to apply pressing force to the flanging 9-1 when the pressing wheel 7 rolls. The pressing wheel 7 can not only compress the flanging 9-1, thereby preventing the welding quality from being influenced by dislocation or deformation between the flanging 9-1 and the wall plate 8 during welding, but also play an auxiliary role in pushing and guiding the energy beam 2 in the welding channel during welding, and the auxiliary device can move more flexibly by using rolling friction force.

In some embodiments, as shown in fig. 1, the elastic pressing mechanism includes a spring and a pressing connection column 4, one end of the pressing connection column 4 is connected to the synchronization beam 3, and the other end is connected to the pressing wheel 7 through the spring. When the pressing wheel 7 rolls, the spring is always kept in a compressed state, the pressing wheel 7 is tightly attached to the flanging 9-1 by the aid of elasticity of the spring, so that the flanging 9-1 and the wall plate 8 are tightly pressed, deformation of the component 9 is effectively inhibited, and welding quality is improved.

As an alternative embodiment, as shown in fig. 3, the elastic pressing mechanism includes a cushion cylinder 14 and a piston rod 13. One end of a piston column 13 is fixed on the synchronous beam 3, one end of the piston column 13 is telescopically inserted in a buffer cylinder 14, and the buffer cylinder 14 is connected with the pinch roller 7. Because fluid (liquid or gas) is filled between the piston column 13 and the buffer cylinder 14, the piston column 13 is under the action of the pushing force generated by hydraulic pressure or air pressure and the gravity action of the buffer cylinder 14, so that the pressing wheel 7 is driven to be pressed on the flanging 9-1, and the pressing effect between the flanging 9-1 and the wall plate 8 is realized. The installation positions of the buffer cylinder 14 and the piston column 13 can be changed, namely, the buffer cylinder 14 can be fixed on the synchronous beam 3, and the piston column 13 is connected with the pinch roller 7. Therefore, the mounting position of the cushion cylinder 14 and the piston column 13 can be determined based on the relationship between the hydraulic or pneumatic pressure action and the gravity action.

The elastic pressing mechanism can also be arranged in other structures, such as a cushion pad (elastic cushion), elastic cement or an air spring, as long as the requirement of providing driving force for the pressing wheel 7 so as to press the pressing wheel 7 on the flange 9-1 is met.

In some embodiments, the elastic pressing mechanism further comprises a supporting shaft 6, one end of the supporting shaft 6 is connected with the elastic pressing mechanism, and the other end is connected with the rotating shaft of the pressing wheel 7. As shown in fig. 2, in order to ensure that the synchronizing beam 3 and the guide support assembly do not obstruct the penetration of the welding energy beam 2 when the guide support assembly is press-fitted on the body beam of the member 9, the support shaft 6 is preferably arranged obliquely so that the pressing wheel 7 is positioned in front of or behind the guide support assembly when moving, as indicated by the arrow in fig. 2, which is the direction in which the movement of the auxiliary device is advanced during welding. The axial line of the energy beam 2 and the surface of the flanging 9-1 are in a non-vertical state, the preferred incident angle is theta, and theta is more than or equal to 3 degrees and less than or equal to 5 degrees, so that the condition that the incident of the energy beam 2 and the position layout of the pinch roller 7 are not interfered can be met, and the condition that the welding process is interrupted due to high reflection when the laser energy beam 2 is vertically incident can be effectively prevented.

In some embodiments, in order to ensure that the pressing wheel 7 does not obstruct or interfere with the injection of the energy beam 2 during rolling, the pressing wheel 7 is rotatably sleeved at one end of the rotating shaft, the main body of the rotating shaft is fixed at the bottom of the supporting shaft 6, so that when the pressing wheel 7 rolls, the rim is pressed on the flanging 9-1, and the rotating surface faces the welding channel. The structure is arranged so that the rolling track line of the wheel rim of the pinch roller 7 is staggered with the axis of the supporting shaft 6.

As an alternative embodiment, a pair of fork levers are respectively connected to the bottom of the supporting shaft 6, and the rotating shaft of the pressing wheel 7 is rotatably connected between the pair of fork levers. The rolling track line of the wheel rim of the pressure wheel 7 is positioned on the same straight line with the axis of the supporting shaft 6, so that when the pressure wheel 7 rolls, no matter the energy beam 2 is injected onto the turning plate from any side of the pressure wheel 7, the motion track of the wheel rim of the pressure wheel 7 cannot cause interference or obstruction to the injection of the energy beam 2.

In some embodiments, the guide support assembly includes a guide connecting column 12, a guide spring 11 and a guide pressure plate 10, wherein one end of the guide connecting column 12 is connected to the synchronization beam, and the other end is connected to the guide pressure plate 10 through the guide spring 11. The guide connection column 12 serves as a support member to provide structural support for the guide platen 10. The guide spring 11 as an elastic drive can press the guide platen 10 against the body beam of the member 9 with an elastic compression force. The guide pressure plate 10 is connected with the component 9 in a sliding mode, so that a guide and supporting effect can be provided for the movement of the auxiliary device, and the phenomenon that the precision and the attractiveness of a welding seam are affected due to the fact that the pressure wheel 7 deviates during welding is prevented.

In some embodiments, the guide platen 10 is provided with a baffle plate at each of two sides thereof to form a groove on the lower surface of the guide platen 10. The grooves of the guide press 10 are snapped out of the top of the door-shaped body beam of the member 9 and can slide along the length of the body beam when the auxiliary device is moved. The baffle serves to prevent misalignment between the guide pressure plate 10 and the member 9.

The embodiment of the invention also provides welding equipment. The welding device comprises a welding emitter and a welding aid as described above. The welding emission device is used for synchronously emitting a plurality of energy beams 2, and the energy beams 2 are respectively emitted into welding channels arranged on the inner side and/or the outer side of the two groups of flanging compressing assemblies. The welding equipment compresses a flanging 9-1 on a wall plate 8 through auxiliary equipment, and synchronously emits a plurality of symmetrical energy beams 2 by utilizing a welding emission device. Taking two laser beams respectively passing through a focusing lens 1 shown in fig. 1 as an example, two symmetrical energy beams 2 are simultaneously injected into welding channels on the inner sides of two groups of flanging pressing assemblies, so that laser acts on flanging 9-1 on two sides of a member 9, and synchronous welding of the flanging 9-1 on two sides of the member 9 can be realized by utilizing one-time synchronous and same-direction walking of a welding auxiliary device and a welding emission device.

The welding equipment firstly improves the welding efficiency, secondly effectively inhibits the deterioration effect of the deformation of the component 9 on the welding quality caused by asynchronous welding, and realizes the beneficial purpose of improving the laser welding manufacturing quality of the side wall plate 8 of the rail vehicle.

An embodiment of the present invention further provides a welding method, as shown in fig. 4, the method includes the following steps:

(1) assembling and positioning: fixing a guide support component of the welding auxiliary device on a member 9, and respectively pressing two groups of flanging pressing components of the welding auxiliary device on flanging 9-1 at two sides of the member 9;

(2) and (3) welding restraint: synchronously emitting a plurality of energy beams 2 through a welding emitting device, wherein each energy beam 2 is correspondingly emitted into a plurality of welding channels of the welding auxiliary device, and the inner sides and/or the outer sides of the two groups of flanging pressing components are respectively provided with the welding channels;

(3) synchronous welding: the welding assist device and the welding transmitter are moved in the same direction so that the plurality of energy beams 2 are moved synchronously in the corresponding welding passes, respectively.

The welding method will be described in addition below by taking as an example the welding of two symmetrical laser energy beams 2 emitted by the same emission source as the flanges 9-1 on both sides of the pi-shaped member 9.

In the step (1), referring to fig. 1, positioning a door-shaped main body beam of a pi-shaped member 9 by using a guide pressure plate 10 of the pi-shaped member 9, and pressing the member 9 on a wall plate 8 by using a guide spring 11 and a guide connecting column 12; pressing the flanging 9-1 of the pi-shaped member 9 on the wall plate 8 by using the pressing wheels 7 of the two flanging pressing assemblies and combining the combined action of the pressing spring 5, the supporting shaft 6 and the pressing connecting column 4; the pressing force of the guide spring 11 and the pressing spring 5 on the member 9 and the flanging 9-1 is regulated and controlled by adjusting the elastic modulus and the compression amount of the guide spring and the pressing spring, so that the member 9 and the flanging 9-1 are tightly attached to the wall plate 8, and plastic deformation does not occur. The guide connecting column 12 and the pressing connecting column 4 are rigidly fixed with the synchronous beam 3, the synchronous beam 3 is arranged along the Z-axis direction of the machine tool and is vertical to the length direction of the main body beam of the component 9, so that the guide pressing plate 10 can move singly along the length direction of the component 9, the simultaneous pressing effect of the component 9 and the flanging 9-1 is realized, and redundant assembly tools in the welding process are omitted.

In the step (2), on the layout of the auxiliary device, two groups of pinch rollers 7 and two laser energy beams 2 are respectively and symmetrically distributed on two sides of the component 9, and the laser energy beams 2 act on the inner sides of the pinch rollers 7 (as shown in fig. 1, one side close to the central line of the component 9); during welding, the welding launching device and the welding auxiliary device synchronously move along the welding direction V shown in figure 1, the guide pressing plate 10 is arranged in front of the pressing wheel 7, the distance between the guide pressing plate 10 and the pressing wheel 7 in the X-axis direction is H, and the numerical value of the distance is 30-40 mm. Thus, the rigidity of the pi-shaped member 9 in the length direction can be fully utilized, and the double effects of compaction and guiding are realized.

In the step (3), the axis of the energy beam 2 and the surface of the flanging 9-1 are in a non-vertical state, and the preferred incident angle is theta, which is more than or equal to 3 degrees and less than or equal to 5 degrees, so that the interference between the incident of the energy beam 2 and the position layout of the pinch roller 7 can be avoided, and the condition that the welding process is interrupted due to high inversion when the laser energy beam 2 is vertically incident can be effectively prevented.

To sum up, the welding auxiliary device of this embodiment includes synchronous roof beam 3, direction supporting component and turn-ups compress tightly the subassembly, the direction supporting component is connected with synchronous roof beam 3, two sets of turn-ups compress tightly the symmetrical establishing in the both sides of direction supporting component of subassembly, two sets of turn-ups compress tightly the subassembly and are connected with synchronous roof beam 3 respectively, so that the direction supporting component compresses tightly the formation of two welding passageways between the subassembly with two sets of turn-ups respectively, thereby guarantee when kicking into many welding energy bundles 2 simultaneously, each welding energy bundle 2 can be synchronous removes and forms symmetrical welding seam on each turn-ups 9-1 in each welding passageway that corresponds. The device utilizes the guide supporting component and the flanging pressing component to respectively tightly push the flanging 9-1 on the wall plate 8, and can realize the synchronous welding of the flanging 9-1 at two sides of the component 9 by one-time walking during welding, thereby not only ensuring the pressing between the flanging 9-1 and the wall plate 8 and preventing welding deformation, but also accurately guiding the welding direction.

It should be noted that, although the embodiment of the present invention is described by taking welding of the flange 9-1 of the pi-shaped member 9 as an example, the auxiliary device, the welding equipment and the welding method are provided for the sake of illustration and description, and those skilled in the art will understand that the auxiliary device of the present invention can also be applied to welding of members 9 with other shapes. Therefore, it is not intended to limit the invention to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A welding auxiliary device is characterized by comprising a synchronous beam, two groups of flanging compressing assemblies and two groups of flanging compressing assemblies, wherein the guiding supporting assemblies are connected with the synchronous beam, the two groups of flanging compressing assemblies are symmetrically arranged on two sides of the guiding supporting assemblies, the guiding supporting assemblies are compressed on a main beam of a member and take the guiding supporting assemblies as symmetrical axes, the flanging compressing assemblies on two sides respectively support the flanging of the member tightly on a wall plate, and the member is a pi-shaped member; the two groups of flanging compressing assemblies are respectively connected with the synchronous beam so as to respectively form welding channels on the inner sides of the two groups of flanging compressing assemblies, and a plurality of energy beams are synchronously and correspondingly injected into each welding channel and respectively synchronously move along with the welding auxiliary device in each corresponding welding channel;

the flanging pressing assembly comprises a pressing wheel and an elastic pressing mechanism, the pressing wheel is connected with the synchronous beam through the elastic pressing mechanism, and the welding channel is formed between the guide supporting assembly and the pressing wheel; the guide support assembly comprises a guide connecting column, a guide spring and a guide pressure plate, one end of the guide connecting column is connected with the synchronous beam, and the other end of the guide connecting column is connected with the guide pressure plate through the guide spring;

the elastic pressing mechanism comprises a spring and a pressing connecting column, one end of the pressing connecting column is connected with the synchronous beam, and the other end of the pressing connecting column is connected with the pressing wheel through the spring; the elastic pressing mechanism further comprises a supporting shaft, one end of the supporting shaft is connected with the spring, and the other end of the supporting shaft is connected with the rotating shaft of the pressing wheel; the supporting shaft is obliquely arranged so that the pressing wheel is positioned in front of or behind the guide supporting component when moving;

the pressing force on the main body beam and the flanging is regulated and controlled by adjusting the elastic modulus and the compression amount of the guide spring and the spring;

the incident angle of the axis of the energy beam is theta, wherein theta is more than or equal to 3 degrees and less than or equal to 5 degrees.

2. The welding assistance device of claim 1, wherein the guide pressure plate is provided with a baffle outward from each side.

3. The welding auxiliary device according to claim 1 or 2, wherein the elastic pressing mechanism comprises a buffer cylinder and a piston column, one end of the piston column is fixed on the synchronous beam, the other end of the piston column is telescopically inserted into the buffer cylinder, the buffer cylinder is connected with the pinch roller, and one end of the supporting shaft is connected with the buffer cylinder.

4. Welding equipment, characterized in that it comprises a welding emitter for simultaneously emitting a plurality of energy beams, which are respectively injected into welding channels provided inside two sets of flanging compression assemblies, and a welding auxiliary device according to any one of claims 1 to 3.

5. A welding method, characterized in that it is performed with a welding assistance device according to any one of claims 1 to 3, the method comprising the steps of:

synchronously emitting a plurality of energy beams through a welding emitting device, wherein each energy beam is correspondingly emitted into a plurality of welding channels of the welding auxiliary device, and the welding channels are formed on the inner sides of the two groups of flanging pressing components respectively;