CN112828515A

CN112828515A - Welding auxiliary equipment for engineering machinery

Info

Publication number: CN112828515A
Application number: CN202011634382.5A
Authority: CN
Inventors: 李伟; 吴长庚; 崔淼; 林杰城; 郑陈艺; 唐金平; 林嘉楠
Original assignee: Xiamen Aerospace Siert Robot System Co Ltd
Current assignee: Xiamen Aerospace Siert Robot System Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-25

Abstract

The present invention provides a welding auxiliary device for an engineering machine, including: the device comprises a beam mechanism, a first rotating mechanism, a second rotating mechanism, a positioning mechanism and a pressing mechanism; the first rotating mechanisms are arranged on two sides of the beam mechanism along the second direction and can drive the beam mechanism to rotate along the axis of the second direction; the second slewing mechanism comprises a rotating assembly and a driven assembly; the rotating assembly and the driven assembly are arranged on the beam mechanism in a sliding mode, and a to-be-welded workpiece placing area can be formed between the rotating assembly and the driven assembly; the rotating assembly can drive a workpiece to be welded in the placing area to rotate along the axis of the first direction; the positioning mechanism is at least arranged on one of the rotating assembly and the driven assembly; the positioning mechanism can limit the workpiece to be welded along multiple directions; the pressing mechanism and the positioning mechanism are arranged on the same side, and the pressing mechanism can slide along a third direction to limit and clamp the workpiece to be welded. The auxiliary welding device is suitable for the welding assistance of large workpieces to be welded in engineering machinery so as to achieve the purpose of efficient welding.

Description

Welding auxiliary equipment for engineering machinery

Technical Field

The invention relates to the technical field of welding assistance, in particular to welding assistance equipment for engineering machinery.

Background

With the continuous improvement of technological productivity, the traditional manual operation mode is slowly replaced by automatic equipment, and under the stimulation of various preferential policies and continuous support of the state to technological enterprises and large-scale factories, a new round of technological upgrade occurs in the traditional labor-intensive production mode. Particularly in the heavy industry, the realization of automation not only improves the production efficiency, but also reduces the incidence of accidents. The traditional ultra-large workpiece is affected by the appearance, weight and distribution position of welding seams, and is difficult to clamp and turn. Usually, a traveling crane is used manually for displacement, part of welding seams are too high, and especially some key special welding seams must be welded at a high position, so that a manually operated platform is increased, and the working efficiency and the input cost are influenced.

Disclosure of Invention

The invention discloses a welding auxiliary device for engineering machinery, which is simple in structure and convenient to operate and aims to solve the problems that a to-be-welded workpiece of the engineering machinery is inconvenient to weld, difficult to clamp and limit and the like.

The invention adopts the following scheme:

the application provides a welding auxiliary assembly for engineering machinery, includes: the device comprises a beam mechanism, a first rotating mechanism, a second rotating mechanism, a positioning mechanism and a pressing mechanism; the beam mechanism is transversely arranged along the length direction of the beam mechanism towards a first direction; the first rotating mechanisms are arranged on two sides of the cross beam mechanism along the second direction and can drive the cross beam mechanism to rotate along the axis of the second direction; the second swing mechanism is arranged on the beam mechanism and comprises a rotating assembly and a driven assembly which are arranged at two ends of the beam mechanism in a mutually opposite mode along a first direction; the rotating assembly and the driven assembly are arranged on the beam mechanism in a sliding mode, and a to-be-welded workpiece placing area can be formed between the rotating assembly and the driven assembly; the rotating assembly can drive a workpiece to be welded in the placing area to rotate along the axis of the first direction; the positioning mechanism is at least arranged on one of the rotating assembly and the driven assembly, and can limit the position of the workpiece to be welded along a plurality of directions; the pressing mechanism and the positioning mechanism are arranged on the same side, and the pressing mechanism can slide along a third direction to limit and clamp a workpiece to be welded.

As a further improvement, the beam mechanism extends along two sides of the middle of the length direction of the beam mechanism to be provided with mounting lug parts, and the first rotating mechanism is hinged and clamped on the two mounting lug parts and can rotate the whole beam mechanism under the driving of the main rotating end of the first rotating mechanism.

As a further improvement, the rotating assembly and the driving source of the main rotating end are both constructed in a mode that a speed reducer is matched with a motor to drive rotation.

As a further improvement, the rotating assembly and the driven assembly are both constructed into L-shaped placing substrates, the placing substrates are rotatably arranged on two sides of the beam mechanism, and the two placing substrates on different sides are oppositely arranged, so that an L-shaped placing area is formed on each side for supporting a workpiece to be welded.

As a further improvement, the placing base plate is arranged on the beam mechanism in a sliding mode through the base, and the placing base plate is arranged on the inner side of the base in a hinged mode.

As a further improvement, the positioning mechanism at least comprises a centering clamping piece which is arranged in the placing area and is arranged along the horizontal transverse direction and a limiting abutting piece which is arranged along the horizontal longitudinal direction, the limiting abutting piece is used for limiting the movement trend of the workpiece to be welded along the side of the placing substrate, and the centering clamping piece comprises a clamping block which can be relatively close to or far away from the clamping block and is used for horizontally and transversely centering and clamping the workpiece after the workpiece to be welded is placed.

As a further improvement, the two clamping blocks can be synchronously arranged on the placing area in a sliding mode, at least one axial positioning piece is arranged between the two clamping blocks, and the positioning piece can be embedded and clamped with the workpiece in the axial direction.

As a further improvement, the first rotating mechanism and the beam mechanism, and the base and the placing substrate are connected in a rotating supporting mode.

As a further improvement, the pressing mechanism is arranged on one side of the placing substrate in a sliding manner; the pressing mechanism at least comprises a pair of swing arms which are rotatably arranged above the placing area and are opposite to the placing area.

As a further improvement, the swing arms are provided with a first position which covers the upper part of the placing area and can be pressed on the workpiece and a second position which avoids the placing area to allow the workpiece to be directly placed into the placing area along the upper part, and the two swing arms can be driven to synchronously switch states between the first position and the second position through the driving of the driving mechanism.

By adopting the technical scheme, the invention can obtain the following technical effects:

the welding auxiliary equipment is suitable for welding assistance of large-scale workpieces to be welded in engineering machinery, and the purpose of efficient welding is achieved. The first swing mechanism drives the beam mechanism to rotate along the axis in the second direction, and the rotating assembly of the second swing mechanism is matched to drive the workpiece to be welded to rotate along the axis in the first direction, so that the workpiece to be welded is supported to rotate to an optimal welding station along multiple axis directions, and subsequent welding processes are facilitated. More importantly, the positioning mechanism and the pressing mechanism which are arranged on the rotating assembly and/or the driven assembly of the second rotating mechanism can limit and clamp the workpiece to be welded which is placed in the placing area in multiple directions, so that the efficient constraint effect is achieved. And the positioning mechanism and the pressing mechanism are arranged on the beam mechanism in a slidable manner through the second rotating mechanism, and the pressing mechanism can be adjusted in a sliding manner along the third direction, so that the compatibility is high, positioning and clamping of workpieces to be welded in different sizes in special shapes are facilitated, the operation is convenient, and the workpieces can be clamped efficiently to avoid dislocation or separation during rotation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic configuration diagram of a welding assistance apparatus for a construction machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a diagram illustrating an exemplary application of a welding assistance device for a construction machine;

fig. 4 is a schematic structural view of a beam mechanism of the welding assistance apparatus for construction machinery according to the embodiment of the present invention;

fig. 5 is a schematic structural view of a placement substrate of a welding assistance apparatus for construction machinery according to an embodiment of the present invention;

fig. 6 is another schematic structural diagram of a placement substrate of a welding auxiliary device for a construction machine according to an embodiment of the present invention, in which a hidden portion structure is easily shown;

fig. 7 is a schematic structural diagram of a pressing mechanism of a welding auxiliary device for a construction machine according to an embodiment of the present invention, in which a swing arm is in a second position in an upper drawing, and the swing arm is in a first position in a lower drawing.

Icon: 1-a beam mechanism; 11-mounting ears; 12-a track; 13-a slide; 2-a first slewing mechanism; 3-a second swing mechanism; 3A-a rotating assembly; 3B-a driven assembly; 31-placing a substrate; 32-a base; 4-a positioning mechanism; 41-centering the clamping member; 411-fixture block; 42-a limit abutment; 43-axial positioning member; 5-a pressing mechanism; 51-a swing arm; 52-pressing pad; 6-a drive mechanism; 7-a slide rail; 8-a slide block; 9-trapezoidal lead screw; 10-rotation stopping member; c-a workpiece to be welded; x-a first direction; y-a second direction; z-third direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 6, the present embodiment provides a welding assistance apparatus for a construction machine, including: the device comprises a beam mechanism 1, a first rotary mechanism 2, a second rotary mechanism 3, a positioning mechanism 4 and a pressing mechanism 5. The beam mechanism 1 is arranged transversely along the length direction thereof in the first direction X. The first rotating mechanism 2 is disposed on two sides of the beam mechanism 1 along the second direction Y, and can drive the beam mechanism 1 to rotate along the axis of the second direction Y. The second turning mechanism 3 is disposed on the beam mechanism 1, and includes a turning unit 3A and a driven unit 3B that are disposed opposite to each other at both ends of the beam mechanism 1 in the first direction X. The rotating assembly 3A and the driven assembly 3B are both arranged on the beam mechanism 1 in a sliding mode, and a placing area for a workpiece C to be welded can be formed between the rotating assembly 3A and the driven assembly. The rotating assembly 3A can drive the to-be-welded workpiece C placed in the placing area to rotate along the axis of the first direction X. The positioning mechanism 4 is disposed at least on one of the rotating block 3A and the driven block 3B, and the positioning mechanism 4 can position the workpiece C to be welded in a plurality of directions. The pressing mechanism 5 and the positioning mechanism 4 are configured on the same side, and the pressing mechanism 5 can slide along the third direction Z to limit and clamp the workpiece C to be welded.

The welding auxiliary equipment in the embodiment is suitable for welding assistance of a large-sized workpiece C to be welded in engineering machinery, so that the purpose of efficient welding is achieved. The first rotating mechanism 2 drives the beam mechanism 1 to rotate along the axis in the second direction Y, and the rotating assembly 3A of the second rotating mechanism 3 is matched to drive the workpiece C to be welded to rotate along the axis in the first direction X, so that the workpiece C to be welded is rotatably supported to be overturned to the optimal welding station along a plurality of axis directions, and subsequent welding procedures are facilitated. More importantly, the positioning mechanism 4 and the pressing mechanism 5 arranged on the rotating assembly 3A and/or the driven assembly 3B of the second rotating mechanism 3 can limit and clamp the to-be-welded workpiece C placed in the placing area in multiple directions, thereby achieving an efficient constraint effect. In addition, the positioning mechanism 4 and the pressing mechanism 5 are slidably arranged on the beam mechanism 1 through the second rotating mechanism 3, and the pressing mechanism 5 can be slidably adjusted along the third direction Z, so that the compatibility is high, positioning and clamping of the special-shaped workpieces C to be welded with different sizes are facilitated, the operation is convenient, and the workpieces can be clamped efficiently to avoid dislocation or separation during rotation.

It should be mentioned that the first direction X, the second direction Y and the third direction Z are preferably arranged perpendicularly.

In one embodiment, the beam mechanism 1 is provided with mounting lugs 11 extending along two sides of the middle of the length direction of the beam mechanism 1, and the first rotating mechanism 2 is hinged and clamped on the two mounting lugs 11 and can rotate the whole beam mechanism 1 under the driving of the main rotating end of the first rotating mechanism 2. Therefore, the first rotating mechanism 2 drives the beam mechanism 1 to rotate along the Y axis in the second direction, so that the whole equipment can rotate to adjust the position under the rotating support of the first rotating mechanism 2, and one-time large-amplitude rotation is formed, and the effect of overall adjustment is achieved.

Referring to fig. 3, in an embodiment, the rotating assembly 3A and the driven assembly 3B are each configured as an L-shaped placing base plate 31, each placing base plate 31 is rotatably disposed on two sides of the beam mechanism 1, and two placing base plates 31 on different sides are opposite to each other, so as to form an L-shaped placing area on each side for supporting the workpiece C to be welded. Thereby make treat that welding workpiece C is with the firm configuration of horizontal mode on two districts of placing to drive driven assembly 3B and follow the rotation under rotating assembly 3A's the driving, in order to drive treat that welding workpiece C rotates along first direction X axis, in order to cooperate first slewing mechanism 2 to carry out the gyration of a small margin again on beam mechanism 1, play the direct adjustment and treat that welding workpiece C rotates the effect of adjusting the station, do benefit to going on smoothly of follow-up welding process. And the axial rotation in different directions is performed twice to fully prepare for the dead-corner-free welding of the workpiece C to be welded.

In particular, the placement base plate 31 is slidably disposed on the beam mechanism 1 via a base 32, and the placement base plate 31 is hingedly disposed on the inner side of the base 32. It should be mentioned that the base 32 may be disposed on the beam mechanism 1 in a manner that the beam mechanism 1 is provided with a rail 12 and a sliding seat 13 slidably engaged with the rail 12 along the first direction X, the base 32 is disposed on the sliding seat 13, and the base 32 is controlled by an external drive to move along the rail 12 to adjust the position and stably place on the rail 12 after being adjusted to fit the size of the workpiece C to be welded, so as to limit and stabilize the workpiece C to be welded. Moreover, the susceptors 32 on different placement substrates 31 can be controlled by different external drives to independently adjust the positions, so that the adjustment mode is more flexible and effective. The hinge arrangement between the placement base plate 31 and the base 32 may be a pivoting support. The slewing bearing is a large bearing capable of bearing comprehensive loads, and can simultaneously bear larger axial and radial loads and overturning moments, so that efficient slewing configuration is facilitated. Similarly, the first rotating mechanism 2 and the beam mechanism 1 can also rotate in the above-mentioned rotating support manner, which is not described in detail. In particular, the beam mechanism 1 is formed by welding a low-carbon alloy steel plate and a rectangular tube profile.

It should be noted that the rotating assembly 3A and the driving source of the main rotating end are both configured in a way that the speed reducer cooperates with the motor to drive the rotation. Specifically, the driving source directly transmits power to the rotating assembly 3A/the main rotating end through transmission connection, and the driven assembly 3B/the auxiliary rotating end can rotate together, so that a rotating mechanism is only provided with a power source, and the rotating mechanism rotates integrally along an axis in one direction. Adopt accurate speed reducer to add external shaft motor, the output of driving source can mesh the transmission with slewing bearing mutually for the gyration mode is more steady, high-efficient.

Referring to fig. 2 and 5, in an embodiment, specifically, the positioning mechanism 4 at least includes a centering and clamping member 41 disposed in the placing area and disposed along the horizontal transverse direction and a limiting and abutting member 42 disposed along the horizontal longitudinal direction, the limiting and abutting member 42 is used for limiting the moving trend of the to-be-welded workpiece C along the placing base plate 31 side, and the centering and clamping member 41 includes a fixture block 411 capable of being relatively close to or far away from the to-be-welded workpiece C for centering and clamping the to-be-welded workpiece C along the horizontal transverse direction after being placed. The limiting abutting piece 42 is configured to be a convex structure, so that the workpiece placed in the placing area can abut against the convex structure, and the workpiece is limited to move along one side of the long edge end close to the substrate. Moreover, the centering and clamping mechanism can adjust the workpiece placed in the placing area to be approximately in a centered configuration under the pushing of the fixture blocks 411, and the workpiece is fastened under the clamping of the two fixture blocks 411.

In a preferred embodiment, the two latch blocks 411 can be synchronously and slidably arranged on the placing area, and at least one axial positioning element 43 is arranged between the two latch blocks 411, and the positioning element can be nested and clamped with the workpiece along the axial direction. The workpiece enters the placing area through hoisting, and is directly clamped with the axial positioning piece 43 in a concave-convex mode, so that the workpiece is directly arranged in the center, the two clamping blocks 411 are adjusted to be close to and abutted against the workpiece, and the workpiece is clamped in the center. The two fixture blocks 411 of the centering and clamping mechanism can be driven by one double-screw guide rail at the same step, or the fixture blocks 411 can be directly driven to move through different push rods respectively, so that the workpiece can be clamped in a centering and moving manner or kept away from the avoiding workpiece without limitation.

Referring to fig. 2, 5 and 7, in one embodiment, specifically, the pressing mechanism 5 is slidably disposed on a side on which the substrate 31 is placed. The pressing mechanism 5 includes at least a pair of swing arms 51, and the swing arms 51 are rotatably disposed above the placing area and are opposite to the placing area. The swing arms 51 have a first position for covering the placing area and pressing the workpiece and a second position for avoiding the placing area to allow the workpiece C to be welded to be directly placed into the placing area along the upper direction, and the two swing arms 51 can be driven by the driving mechanism to synchronously switch states between the first position and the second position.

In this embodiment, the pair of swing arms 51 of the pressing mechanism 5 can be switched to the second position when the workpiece C to be welded is hoisted and placed in the placement area in the vertical direction, so as to avoid the upper space and avoid interference or collision. And after waiting to weld work piece C and placing, rethread actuating mechanism orders about two swing arms 51 and switches over to the primary importance along the second place to make the swing arm 51 that is in the primary importance can the pressfitting on the work piece after pressing mechanism 5 along placing the vertical slip of base plate 31, make the work piece via the cooperation of positioning mechanism 4 and pressing mechanism 5 down with the restriction restraint on placing the district, convenient operation and flexibility ratio are higher, and the adaptation is in the work piece hoist and mount mode of placing of each type.

Referring to fig. 5, 6 and 7, in one embodiment, the placement substrate 31 is substantially in the shape of an L-shaped plate. Wherein, the placing area is formed at the short side end of the L-shaped plate body, and the pressing mechanism 5 is arranged at the long side end of the L-shaped plate body. Specifically, a slide rail 7 and a slide block 8 which is adapted to slide along the slide rail 7 are vertically disposed at a long side end of the placement substrate 31, the pressing mechanism 5 is disposed on the slide block, and the slide block 8 drives the trapezoidal screw 9 via a motor (not shown) to be capable of sliding along the slide rail 7, so that the pressing mechanism 5 is pressed onto the workpiece C to be welded. Therefore, the motor drives the sliding block 8 to move along the direction of the sliding rail 7, and the swing arm 31 at the first position on the pressing mechanism 5 is driven to press down to the workpiece C to be welded, so that the workpiece C to be welded is pressed and fixed. And the slide block is arranged on a nut of the trapezoidal screw rod 9, can lift and slide along the screw rod direction along with the nut, correspondingly compresses the workpiece C to be welded or releases the pressing on the workpiece C to be welded, and the trapezoidal screw rod 9 is adopted to ensure that the pressing force is more stable and effective.

In one embodiment, in particular, a rotation stopper 10 is disposed at the end face of the placement substrate 31 where the slide rail 7 is located, and the rotation stopper 10 can limit the swing arm 51 to rotate continuously when the swing arm 51 is switched to the first position. Wherein, the rotation stopping piece 10 is convexly arranged on the end surface of the placing substrate 1 and is configured in the same direction with the slide rail 7. The rotation stopping piece 10 and the sliding block are arranged in an avoiding mode, and interference to the sliding block cannot be caused. Moreover, the rotating end of the swing arm 51 is configured at one side of the rotation stopping piece 10, so that the free end of the swing arm 51 can move relative to the outer side of the substrate 31 when the swing arm 51 rotates, and after the swing arm 51 is switched to the first position along the second position, the body of the swing arm 51 between the rotating end and the free end can at least abut against the rotation stopping piece 10 arranged in a protruding manner, so that the swing arm 51 is limited to continue rotating along the rotating end, the limiting protection is achieved, and the occurrence of accidents caused by the fact that the swing arm 51 rotates to open and close under the action of external force can be avoided.

In one embodiment, the two swing arms 51 are preferably arranged to rotate in a horizontal opening and closing manner and driven synchronously by different driving mechanisms 6. Preferably, the driving mechanism 6 is a hydraulic motor, the hydraulic motor is vertically disposed on the slider, and an output end of the hydraulic motor is connected to the swing arm 51, so that the swing arm 51 can perform position switching outward along the end surface of the slider. When the swing arm 51 is at the first position, an included angle of approximately 90 degrees is formed between the swing arm 51 and the end surface of the slider, and when the swing arm 51 is at the second position, an included angle of approximately 0 degree is formed between the swing arm 51 and the end surface of the slider 8, and the swing arm can be accommodated in the slider 8 and is approximately flush with the end surface of the slider. When the angle is 90 degrees, the swing arm 51 can vertically shield the placing area, so that the workpiece C to be welded is limited on the placing area and is driven by the sliding block 8 to approach to compress the workpiece C to be welded or to be far away from the workpiece C to avoid the workpiece C to be welded. When the angle is 0 degree, the swing arm 51 can be approximately flush with the slide block, and the swing arm is prevented from protruding out of the end face position to block the hoisting of the workpiece C to be welded.

In one embodiment, in particular, a sensor (not shown) capable of detecting the position of the swing arm 51 is disposed on the slider, and when the swing arm 51 is switched to the first position and the second position, the sensor can sense whether the swing arm 51 is switched to the right position and feed back to the user terminal, so that the next step can be performed.

In one embodiment, a pressing pad 52 is disposed on the bottom side of the swing arm 51 away from the output end, and the pressing pad 52 can be tightly pressed on the workpiece C to be welded. The pressing pad 52 is preferably made of elastic material such as rubber, and plays a dual role of pressing and protecting.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A welding assistance apparatus for a construction machine, comprising:

the beam mechanism is transversely arranged along the length direction of the beam mechanism towards a first direction;

the first rotating mechanism is arranged on two sides of the beam mechanism along the second direction and can drive the beam mechanism to rotate along the axis of the second direction;

a second swing mechanism arranged on the beam mechanism and including a rotating assembly and a driven assembly arranged at two ends of the beam mechanism in a first direction in an opposite manner; the rotating assembly and the driven assembly are arranged on the beam mechanism in a sliding mode, and a to-be-welded workpiece placing area can be formed between the rotating assembly and the driven assembly; the rotating assembly can drive a workpiece to be welded in the placing area to rotate along the axis of the first direction;

the positioning mechanism is at least arranged on one of the rotating assembly and the driven assembly and can limit the position of the workpiece to be welded along a plurality of directions;

and the pressing mechanism and the positioning mechanism are arranged on the same side, and the pressing mechanism can slide along a third direction to limit and clamp the workpiece to be welded.

2. The welding auxiliary device of claim 1, wherein the beam mechanism is provided with mounting ears extending from two sides of a middle portion of the beam mechanism along a length direction of the beam mechanism, and the first rotating mechanism is hinged and clamped between the two mounting ears and can rotate the whole beam mechanism under the driving of a main rotating end of the first rotating mechanism.

3. The welding assistance device of claim 2, wherein the rotating assembly and the drive source of the primary rotating end are each configured in such a way that a speed reducer cooperates with a motor to drive rotation.

4. The welding assistance device according to claim 1, wherein the rotating component and the driven component are each configured as an L-shaped placing base plate, each placing base plate is rotatably disposed on both sides of the beam mechanism, and the two placing base plates on different sides are arranged opposite to each other, so that an L-shaped placing area is formed on each side for supporting a workpiece to be welded.

5. The welding assistance device according to claim 4, wherein the placement base plate is slidably disposed on the beam mechanism through the base, and the placement base plate is hingedly disposed on an inner side of the base.

6. The welding assistance device according to claim 5, wherein the positioning mechanism comprises at least a centering and clamping member disposed in the placement area and disposed in the horizontal transverse direction, and at least a limiting abutment member disposed in the horizontal longitudinal direction, the limiting abutment member being configured to limit a movement tendency of the workpiece to be welded along the side of the placement substrate, the centering and clamping member comprising a fixture block that can be relatively close to or far from the fixture block for centering and clamping the workpiece in the horizontal transverse direction after the workpiece to be welded is placed.

7. The welding auxiliary device according to claim 6, wherein the two clamping blocks can be synchronously arranged on the placing area in a sliding manner, and at least one axial positioning element is arranged between the two clamping blocks, and the positioning element can be nested and clamped with the workpiece along the axial direction.

8. The welding assistance device according to claim 5, wherein the first rotation mechanism and the beam mechanism, and the base and the placement substrate are connected in a rotation supporting manner.

9. The welding assistance apparatus according to claim 4, wherein the pressing mechanism is slidably disposed on a side on which the substrate is placed; the pressing mechanism at least comprises a pair of swing arms which are rotatably arranged above the placing area and are opposite to the placing area.

10. The welding assistance device of claim 9, wherein the swing arms have a first position covering the top of the placement area and capable of being pressed against the workpiece and a second position avoiding the placement area to allow the workpiece to be placed directly above the placement area, and wherein the swing arms are driven by the driving mechanism to synchronously switch states between the first position and the second position.