WO2022073356A1

WO2022073356A1 - Welding rotating table of wind wheel and welding device using same

Info

Publication number: WO2022073356A1
Application number: PCT/CN2021/098767
Authority: WO
Inventors: 邵根强; 陈洪星
Original assignee: 浙江铭振电子股份有限公司
Priority date: 2020-10-10
Filing date: 2021-06-08
Publication date: 2022-04-14
Also published as: CN112475743A; CN112475743B

Abstract

A welding rotating table of a wind wheel and a welding device using same. The welding rotating table comprises two upright columns (1); two ends of a turnover arm (2) are respectively rotatably connected to the two upright columns (1), a first drive mechanism is provided in each upright column (1), and a working table (4) and a second drive member (41) are provided in the middle of the turnover arm (2). The welding device comprises a fixing frame (7), a welding gun (8) and a welding arm mechanism for moving the welding gun (8), one end of the welding arm mechanism is rotatably connected to the fixing frame (7), and the welding gun (8) is detachably fixed to the other end of the welding arm mechanism.

Description

Welding rotary table for wind wheel and welding equipment using the welding rotary table

technical field

The invention belongs to the technical field of wind wheel production equipment, and particularly relates to a welding rotary table of a wind wheel and a welding device using the welding rotary table.

Background technique

In the fan industry, the wind wheel is the key component of the fan, and the welding quality and precision of the blades are particularly important. At present, most of the existing wind turbine production processes are manually welded, but the manual welding precision is not high enough, and the labor intensity is high, and the welding efficiency is not very ideal.

In order to solve the above problems, the invention patent with the application number "201810951897.4" discloses an impeller welding equipment, including a work station and a welding mechanism; the work station is provided with at least one; the work station includes a frame and a device a turning mechanism on the frame; a working table is rotated on the turning mechanism; the impeller to be processed is installed on the working table, and the working table is provided with a locking device for fixing the impeller to be processed; the locking device The installation position on the workbench is adjustable; the welding mechanism is arranged on one side of the workbench for welding the impeller.

The above-mentioned impeller welding equipment replaces the manual welding method, reduces the burden of laborers, not only improves the production efficiency and accuracy, but also can be applied to impellers of different sizes due to the adjustable installation position of the locking device on the workbench. ,Wide range of applications.

However, one end of the turning arm of the above-mentioned impeller welding equipment is fixedly connected with the second mounting plate, the second mounting plate is rotatably connected to the frame through the first rotating shaft, and the worktable and the transmission mechanism for driving the rotation of the worktable are both fixed on the rotating arm of the turning arm. At the other end, the gravity of the worktable and the transmission mechanism will be converted into a torsion force that twists the flip arm to deform it. Since one end of the flip arm is fixed to the second mounting plate, the torsion force will also indirectly cause the second mounting plate to deform; and Further, the transmission mechanism will inevitably generate vibration in the process of driving the table to rotate, and the unilateral fixation of the flip arm is less stable and can not play a good role in reducing vibration, and even amplifies the vibration and affects the wind. Welding accuracy of the rotor, and poor welding accuracy will lead to unstable welding, affect the stability of the blade fixing, and further affect the stability of the rotor during operation; and if the welding accuracy is poor, in order to make the connection more stable, then It is necessary to increase the welding range and thickness, which will cause the welding seam to become larger and thicker, which will lead to an increase in the weight of the wind rotor, and the wind guiding performance of the blades will be affected, thereby affecting the overall working efficiency of the wind rotor.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the purpose of the present invention is to provide a welding rotary table for a wind wheel with higher structural strength and better stability, and a welding equipment using the welding rotary table.

The object of the present invention can be realized through the following technical solutions:

A welding rotary table for a wind wheel includes two symmetrically arranged uprights and a horizontally arranged overturning arm. A driving mechanism, the middle part of the turning arm is provided with a worktable and a second driving member for driving the worktable to rotate, and a welding tool for fixing the wind wheel is provided on the worktable.

The welding rotary table is provided with two uprights, and then the two ends of the flip arm are rotatably connected to the two uprights. The gravity of the worktable and the flipping arm will only be converted into a downward pulling force on the uprights, and will not be converted into turning over. The torsion force of the arm deformation, the force direction of the flip arm is simpler, and when the structural strength of the flip arm and the column are the same, the overall structural strength of the welding turntable can be enhanced; The anti-vibration capability of the flip arm is effectively improved, the influence of the second driving member on the welding rotary table is reduced, and the working precision and the work stability of the welding rotary table are improved.

In the above-mentioned welding rotary table of the wind wheel, the first driving mechanism includes a first driving member, a driving shaft and a driven shaft arranged coaxially, and the driving shaft and the driven shaft are respectively arranged on the two vertical columns. At the upper end, the first driving member is arranged in the upright column and can drive the driving shaft to rotate. The driving shaft and the driven shaft are parallel to the turning arm and are fixedly connected to the turning arm through the mounting plate.

The above-mentioned coaxially arranged driving shaft, driven shaft and turning arm are parallel to the driving shaft, which can make the two ends of the turning arm have better synchronization during the turning process, so that the turning arm is subjected to more uniform force during the working process and avoids partial turning The gravity of the arm and the worktable is converted into torsion force, which is beneficial to further improve the stability and structural strength of the welding rotary table.

In the above-mentioned welding rotary table of the wind wheel, the table is in the shape of a disk, and the diameter of the upper end surface of the table can be coincident with the central axis of the driving shaft.

The diameter parallel to the driving shaft on the upper end face of the above-mentioned worktable coincides with the central axis of the driving shaft. This design can make the turning arm rotate around the driving shaft and the driven shaft. While the rotation angle around the axis is the same, the distance of each position on the worktable in space is the shortest, which is convenient for the position adjustment of the welding torch, which is beneficial to reduce the moving distance of the welding torch during operation and improve the working accuracy of welding.

In the above-mentioned welding rotary table of the wind wheel, a cylindrical mounting portion is provided in the middle of the turning arm, the axial direction of the mounting portion is perpendicular to the length direction of the turning arm, and the mounting portion is provided with a mounting portion for accommodating In the cavity of the second driving member, the worktable is rotatably fixed on the upper end surface of the mounting portion, and the second driving member can drive the worktable to rotate around the central axis of the worktable.

The mounting part of the welding rotary table is arranged in the middle of the turning arm, and then the second driving part is arranged in the installing part, and the worktable and the second driving part are rotatably connected. The mounting plate bears the same force, which is conducive to maintaining the balance of the forces on both ends of the flip arm during the rotation process, avoiding the conversion of the gravity of the flip arm and the worktable into the torsion that drives the deformation of the flip arm, and is conducive to enhancing the structure of the flip arm and the two mounting plates Strength, improve the stability of the welding rotary table when working.

In the above-mentioned welding rotary table for a wind wheel, the welding tool includes a base, a limit sleeve, a positioning ring and a pressure plate arranged in sequence, the base is fixedly connected to the worktable by fasteners, and the base is The seat is in the shape of a disc, and the middle part of the base is upwardly formed with a cylindrical installation column, the installation column can pass through the through hole of the lower plate of the wind wheel, and the limit sleeve, the positioning ring and the pressure plate are sequentially sleeved on the installation column. On the column, the outer side of the positioning ring abuts against the inner side of the upper end of the blade, the upper end of the outer side of the pressure plate is provided with an annular convex edge, and the inner ring of the upper plate of the wind wheel can be in contact with the annular convex edge. the lower end face of the abutment.

The above-mentioned wind wheel is composed of three parts: an upper plate, a lower plate and a blade. The upper end of the blade is welded and fixed to the upper plate, and the lower end of the blade has an end that can be inserted into the lower plate. Arc-shaped, the bottom plate is provided with a socket that matches the end, the end of the blade is inserted into the socket and is initially fixed with the bottom plate, and then fixed by welding, and the edge of the bottom plate is bent downward to form a curved Folding part; the above-mentioned base is used to place the lower plate, wherein the diameter of the base is slightly smaller than the diameter of the lower plate of the wind wheel, and the bending part is located outside the base; the above-mentioned positioning ring can limit the inner position of the upper end of the blade to avoid The blade is tilted inward, and the pressure plate can press down the upper plate. During the pressing process, the upper plate with the middle high and the outer low will squeeze the upper end of the blade to make the upper end of the blade shift inward, and cooperate with the positioning ring to realize the fixing of the blade and the upper plate. , and can make the upper plate, the blade and the lower plate connect tightly, reduce the connection gap, and help improve the stability of the welded product.

In the above-mentioned welding rotary table of the wind wheel, the upper end of the positioning ring is formed with an annular positioning portion protruding outward, the lower end of the annular positioning portion abuts the inner side of the upper end of the blade, and the positioning ring The upper end of the plate is provided with a circular groove, and the lower end of the pressure plate faces downward to form a limit ring, which can be inserted into the circular groove and is located between the outer side wall of the mounting column and the groove wall of the circular groove , the upper end surface of the installation column is detachably fixed with a pressure plate capable of pressing and fixing the pressure plate downward.

The design of the annular positioning part in the welding rotary table can reduce the contact area between the positioning ring and the blade, and control the contact part to the upper end of the blade, leaving enough space for the welding torch to extend into the wind wheel, so as to avoid the positioning ring affecting the welding torch. There is no space for movement, which will reduce the welding effect; the annular flange on the pressure plate can enhance the stability of the connection between the pressure plate and the upper plate, and the outer side of the pressure plate can support and shape the inner side of the upper plate, avoiding the The lower pressure of the pressure plate leads to the deformation or sliding of the upper plate, which affects the stability and welding effect of the final welding; the design of the circular groove and the limit ring can increase the connection area between the pressure plate and the installation column, and make the connection between the pressure plate and the installation column. It is more stable, so that the pressure plate is always kept in a horizontal state during the pressing process, so as to avoid the displacement of the pressure plate, which is beneficial to improve the structural strength of the connection and the stability of the work; the design of the above-mentioned limit sleeve enables the welding rotary table to adapt to different The size of the wind wheel can be replaced with different limit sleeves, so as to ensure that the positioning ring can accurately connect with the upper end of the blade, and ensure that the welding torch can be used normally to weld the connection between the blade and the upper or lower disk.

In the above-mentioned welding rotary table of the wind wheel, the base is provided with a plurality of grooves, the grooves are arranged in a circular array with the central axis of the base as the center, and the grooves are in the shape of an arc. The grooves can be arranged in a one-to-one correspondence with the blades of the wind rotor, and the ends of the lower sides of the blades can pass through the lower plate and be inserted into the corresponding grooves.

The design of the above grooves can not only provide a certain space for the insertion of the blade end, but also avoid the blade end directly abutting with the upper end face of the base, thus causing the lower plate to hang in the air, and the connection is unstable and also affects the normal progress of subsequent welding. , and the blade can also be fixed, so as to realize the fixing of the lower plate, and avoid the displacement of the lower plate relative to the base in the welding process, which affects the welding accuracy.

In the above-mentioned welding rotary table of the wind wheel, the lower side of the column is provided with a base, and both ends of the base are respectively fixedly connected with the lower ends of the two columns.

The two uprights are fixed on the base, which can effectively avoid the offset of the two uprights due to external factors after installation, which will affect the force of the flip arm, affect the structural strength of the flip arm and the working accuracy during welding, thereby improving the cost. Stability of the welding rotary table.

A welding equipment using the above-mentioned welding rotary table includes a fixed frame, a welding gun and a welding arm mechanism for moving the welding gun, one end of the welding arm mechanism is rotatably connected to the fixed frame, and the welding gun is detachably fixed to the welding arm. the other end of the institution.

The above-mentioned welding equipment cooperates with the welding rotary table, so that the welding torch can be accurately aligned with the part to be welded from a suitable angle, so that each welding seam can be welded at one time, so as to avoid the disconnection of the welding seam, which is conducive to improving the welding performance. stability.

In the above welding equipment, the welding arm mechanism includes a first connecting frame, a first arm, a second connecting frame and a second arm, and the lower end of the first connecting frame is rotatable through a vertically arranged rotating shaft and a fixing frame The upper end of the first connecting frame is rotatably connected with the lower end of the first arm through a horizontally arranged rotating shaft, and the lower end of the second connecting frame is rotatably connected with the upper end of the first arm through a horizontally arranged rotating shaft. The upper end of the second connecting frame is rotatably connected to one end of the second connecting arm through a longitudinally arranged rotating shaft, and the other end of the second connecting arm is connected to the welding torch, which is provided with a wire drawing mechanism for drawing the welding wire.

Specifically, the above-mentioned wire drawing mechanism includes a wire pulley and a driven extruding wheel, the wire pulley is driven by a stepping motor, and the wire pulley and the driven extruding wheel cooperate with each other to rotate relative to drive the pulley that passes through the middle. Welding wire; the wire drawing mechanism draws the welding wire back intermittently to make the welding wire melt and form a uniform and continuous fish-scale weld.

Its working principle is as follows: when the welding rotary table is working, first fix the wind wheel to be welded on the work table, and rotate the turning arm 45 degrees, so that a V-shaped shape is formed between the blade and the lower plate when welding the wind wheel. Welding angle, the melted welding wire will not flow to the blade side or the lower disk side due to the action of gravity. After solidification, the two sides will be evenly divided, so that the lengths of both sides of the welding seam are the same, and the welding seam is in a concave arc shape; further, work The table rotates with the flip arm under the driving of the second driving member, so that the V-shaped welding angle is always maintained between the blade and the lower plate of the contact part of the wind wheel and the welding torch. Specifically, because the welding line of the wind wheel is relatively long, It is not enough to rotate the flip arm to make it tilt 45 degrees. The welding attitude has changed when welding from one end of the blade to the other end of the blade. If one end of the blade is welded in a climbing attitude, when it reaches the other end of the blade, it is a downhill attitude. After welding, the downhill posture welding will cause the welding wire to melt and flow down, resulting in the phenomenon of fusion seam stacking, and by the way that the worktable follows the rotation of the flip arm, the welding point can be moved from one end of the blade to the other. The welding point at one end is point a, and the welding point at the other end of the blade is point b. The welding torch does not need to move during the welding process. Point b is slowly rotated to point a under the joint rotation of the flip arm and the worktable, so that the welding seam can be maintained. Consistent and beautiful. In order to achieve the above-mentioned consistent welding seam, there are high requirements for the stability of the rotary table. The deviation of the slight angle or the small vibration may cause the melted welding wire to be offset, which will affect the final welding effect and aesthetics. . The welding rotary table eliminates the torsion force of the turning arm by setting two uprights, so that the stability of the whole turning process and the rotating process of the workbench is higher, and the stability of the connection between the wind wheel and the workbench is improved by the welding tool, so as to Ensures consistent weld quality.

Compared with the prior art, the technical effect of the present invention is:

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is an overall cross-sectional view of the present invention.

3 is an exploded cross-sectional view of the welding tool of the present invention.

FIG. 4 is a partial enlarged view of A in FIG. 2 .

FIG. 5 is a schematic structural diagram of the welding equipment of the present invention.

FIG. 6 is a schematic structural diagram of the welding gun of the present invention.

In the figure, 1. Upright column; 11. Mounting plate; 2. Turning arm; 21. Mounting part; 31. First driving part; 32. Driving shaft; 33. Driven shaft; Parts; 5. Welding tooling; 51. Base; 511, Mounting column; 512, Groove; 52, Limit sleeve; 53, Positioning ring; 531, Ring positioning part; 532, Circular groove; ;541, annular flange; 542, limit ring; 55, pressure plate; 6, base; 7, fixed frame; 8, welding torch; 81, wire wheel; 82, driven extrusion wheel; 92, the first arm; 93, the second connecting frame; 94, the second arm; 12, the upper plate; 13, the blade; 14, the lower plate.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

The welding rotary table of the wind wheel includes two symmetrically arranged uprights 1 and horizontally arranged turning arms 2. Both ends of the turning arms 2 are rotatably connected to the two uprights 1, and one of the uprights 1 is provided with a driving turning arm 2. In the inverted first drive mechanism, the middle of the inversion arm 2 is provided with a worktable 4 and a second driving member 41 for driving the worktable 4 to rotate. The worktable 4 is provided with a welding tool 5 for fixing the wind wheel. The welding rotary table is provided with two columns 1, and then the two ends of the flip arm 2 are rotatably connected to the two columns 1. The gravity of the worktable 4 and the flip arm 2 will only be converted into a downward pulling force on the column 1. It will not be converted into a torsion force that deforms the flip arm 2, and the force direction of the flip arm 2 is simpler. When the structural strength of the flip arm 2 and the column 1 are the same, the overall structural strength of the welding turntable can be enhanced; at the same time, Both ends of the flip arm 2 are connected with the upright column 1, which can effectively improve the anti-vibration capability of the flip arm 2, reduce the influence of the second driving member 41 on the welding rotary table when working, and is beneficial to improve the working accuracy and work of the welding rotary table. stability.

As shown in FIG. 2 , the first driving mechanism includes a first driving member 31 and a coaxially arranged driving shaft 32 and a driven shaft 33 . The driving shaft 32 and the driven shaft 33 are respectively arranged on the upper ends of the two columns 1 . A driving member 31 is arranged in the column 1 and can drive the driving shaft 32 to rotate. The driving shaft 32 and the driven shaft 33 are parallel to the turning arm 2 and are fixedly connected to the turning arm 2 through the mounting plate 11; the worktable 4 is in the shape of a disc , the diameter of the upper end surface of the worktable 4 can coincide with the central axis of the driving shaft 32 . The above-mentioned coaxially arranged driving shaft 32 and driven shaft 33 and the turning arm 2 are parallel to the driving shaft 32, which can make the synchronization of the two ends of the turning arm 2 better during the turning process, so that the turning arm 2 is stressed during the working process. It is more uniform, avoiding the conversion of the gravity of part of the turning arm 2 and the worktable 4 into torsion force, which is conducive to further improving the stability and structural strength of the welding rotary table; the diameter and The central axis of the driving shaft 32 is coincident, this design can make the turning arm 2 rotate around the driving shaft 32 and the driven shaft 33, while the turning angle of the upper end face of the table 4 is the same as the turning angle of the turning arm 2 around the shaft, the working Each position on the stage 4 has the shortest distance of the movement track in space, which is convenient for the position adjustment of the welding torch 8, which is beneficial to reduce the moving distance of the welding torch 8 during operation and improve the working precision of welding.

Further, a cylindrical mounting portion 21 is provided in the middle of the turning arm 2, the axis direction of the mounting portion 21 is perpendicular to the length direction of the turning arm 2, and the mounting portion 21 is provided with a cavity for accommodating the second driving member 41. The table 4 is rotatably fixed on the upper end surface of the mounting portion 21 , and the second driving member 41 can drive the table 4 to rotate around the central axis of the table 4 . The mounting part 21 of the welding rotary table is arranged in the middle of the turning arm 2, and then the second driving member 41 is arranged in the mounting portion 21, and the worktable 4 is rotatably connected with the second driving member 41. The above design can make the turning arm 2 The center is kept in the middle, so that the two mounting plates 11 bear the same force, which is beneficial to keep the force balance of the two ends of the turning arm 2 during the rotation process, and avoid the gravity of the turning arm 2 and the table 4 from being converted into the torsion that drives the deformation of the turning arm 2 , which is beneficial to enhance the structural strength of the turning arm 2 and the two mounting plates 11 and improve the stability of the welding rotary table during operation.

As shown in FIG. 3 and FIG. 4 , the welding tool 5 includes a base 51 , a limit sleeve 52 , a positioning ring 53 and a pressure plate 54 arranged in sequence. The base 51 is fixedly connected to the workbench 4 by fasteners, and the base 51 A cylindrical mounting column 511 is formed in the shape of a disk and the middle of the base 51 is upwardly formed. The mounting column 511 can pass through the through hole of the lower plate 14 of the wind wheel, and the limit sleeve 52, the positioning ring 53 and the pressure plate 54 are sequentially sleeved On the mounting post 511, the outer side of the positioning ring 53 abuts against the inner side of the upper end of the blade 13, and the upper end of the outer side of the pressure plate 54 is provided with an annular convex edge 541. The lower end face of the convex edge 541 abuts; the upper end of the positioning ring 53 is formed with an annular positioning portion 531 protruding outward, the lower end of the annular positioning portion 531 abuts against the inner side of the upper end of the blade 13, and the upper end of the positioning ring 53 is provided with In the circular groove 532, the lower end of the pressure plate 54 is formed with a limit ring 542 facing downward. The limit ring 542 can be inserted into the circular groove 532 and is located between the outer side wall of the mounting post 511 and the groove wall of the circular groove 532, A pressure plate 55 capable of pressing and fixing the pressure plate 54 downward is detachably fixed on the upper end surface of the installation column 511 . The above-mentioned wind wheel is composed of three parts: an upper disk 12, a lower disk 14 and a blade 13. The upper end of the blade 13 is welded and fixed to the upper disk 12, and the lower end of the blade 13 has an end that can be inserted into the lower disk 14. The middle is high and the outer side is low in an arc shape. The bottom plate 14 is provided with a socket for matching with the end. The end of the blade 13 is inserted into the socket and is initially fixed with the bottom plate 14, and then fixed by welding. The edge of the bottom plate 14 Bend downward to form a bent portion; the above-mentioned base 51 is used to place the lower plate 14, wherein the diameter of the base 51 is slightly smaller than the diameter of the lower plate 14 of the wind wheel, and the bent portion is located outside the base 51; the above-mentioned positioning ring 53 can be The inner position of the upper end of the blade 13 is limited to prevent the blade 13 from falling inward. The pressure plate 54 can press the upper plate 12 down. The upper end of the blade 13 is offset inward, and the positioning ring 53 is used to realize the fixing of the blade 13 and the upper plate 12, and can make the upper plate 12, the blade 13 and the lower plate 14 tightly connected, reducing the connection gap, which is conducive to improving welding The stability of the finished product; the design of the annular positioning part 531 in the welding rotary table can reduce the contact area between the positioning ring 53 and the blade 13, and control the contact part to the upper end of the blade 13, so that the welding torch 8 can be extended into the wind wheel. Enough space to prevent the positioning ring 53 from affecting the active space of the welding torch 8, thereby reducing the welding effect; the annular flange 541 provided on the pressure plate 54 can enhance the stability of the connection between the pressure plate 54 and the upper plate 12, and the pressure plate 54 The outer side of the upper plate 12 can support and shape the inner side of the upper plate 12 to avoid deformation or sliding of the upper plate 12 due to the pressing down of the pressure plate 54, which affects the stability and welding effect of the final welding; the circular groove 532 and the limit The design of the ring 542 can increase the connection area between the pressure plate 54 and the mounting post 511 , make the connection between the pressure plate 54 and the installation column 511 more stable, keep the pressure plate 54 in a horizontal state during the pressing process, and prevent the pressure plate 54 from shifting , which is beneficial to improve the structural strength of the connection and the stability of the work; the design of the above-mentioned limit sleeve 52 enables the welding rotary table to replace different limit sleeves 52 according to the size of different wind wheels, thereby ensuring that the positioning ring 53 can be accurately Connecting with the upper end of the blade 13 ensures that the welding torch 8 can weld the connection between the blade 13 and the upper disk 12 or the lower disk 14 in normal use.

Further, the base 51 is provided with a plurality of grooves 512. The grooves 512 are arranged in a circular array with the central axis of the base 51 as the center. The grooves 512 are arc-shaped. One-to-one correspondence, the end of the lower side of the blade 13 can pass through the lower plate 14 and be inserted into the corresponding groove 512 .

The design of the above-mentioned groove 512 can not only provide a certain space for the insertion of the end of the blade 13, but also prevent the end of the blade 13 from directly abutting the upper end surface of the base 51, thereby causing the lower plate 14 to hang in the air, and the connection is unstable and also affects the impact. Subsequent welding is performed normally, and the blades 13 can also be fixed, so as to realize the fixing of the lower plate 14 and avoid the displacement of the lower plate 14 relative to the base 51 during the welding process, which affects the welding accuracy.

As shown in FIG. 1 and FIG. 2 , a base 6 is provided on the lower side of the column 1 , and two ends of the base 6 are respectively fixedly connected with the lower ends of the two columns 1 . The two uprights 1 are both fixed on the base 6, which can effectively avoid the displacement of the two uprights 1 due to external factors after installation, thereby affecting the force of the flip arm 2, the structural strength of the flip arm 2 and the work during welding. accuracy, thereby improving the stability of the welding rotary table.

The welding equipment using the above-mentioned welding rotary table includes a fixed frame 7, a welding torch 8 and a welding arm mechanism for moving the welding torch 8. One end of the welding arm mechanism is rotatably connected to the fixed frame 7, and the welding torch 8 is detachably fixed to the welding arm. The other end of the mechanism; the welding arm mechanism includes a first connecting frame 91, a first arm 92, a second connecting frame 93 and a second arm 94, and the lower end of the first connecting frame 91 is rotatable with the fixed frame 7 through a vertically arranged rotating shaft Connection, the upper end of the first connecting frame 91 is rotatably connected with the lower end of the first arm 92 through the horizontally arranged rotating shaft, the lower end of the second connecting frame 93 is rotatably connected with the upper end of the first arm 92 through the horizontally arranged rotating shaft, and the second The upper end of the connecting frame 93 is rotatably connected to one end of the second connecting arm through a longitudinally arranged rotating shaft, and the other end of the second connecting arm is connected to the welding torch 8, which is provided with a wire drawing mechanism for drawing the welding wire.

The above-mentioned welding equipment cooperates with the welding rotary table, so that the welding torch 8 can be accurately aligned with the part to be welded from an appropriate angle, so that each welding seam can be welded at one time, so as to avoid the disconnection of the welding seam, which is conducive to improving the performance of welding. Welding stability; specifically, the above-mentioned wire drawing mechanism includes a wire pulley 81 and a driven extrusion wheel 82, the wire pulley 81 is driven by a stepping motor, and the wire pulley 81 and the driven extrusion wheel 82 cooperate with relative rotation to drive the pulling and pulling from the middle Through the welding wire; the wire drawing mechanism intermittently draws the welding wire back to make the welding wire melt and form a uniform and continuous fish-scale welding seam.

When the welding rotary table is working, first fix the wind wheel to be welded on the work table 4, and rotate the turning arm 2 by 45 degrees, so that a V-shaped welding is formed between the blade 13 and the lower plate 14 when welding the wind wheel. Angle, the melted welding wire will not flow to the side of the blade 13 or the side of the lower plate 14 due to the action of gravity. After solidification, the two sides will be evenly divided, so that the lengths of both sides of the welding seam are the same, and the welding seam is in a concave arc shape; further, The table 4 rotates following the turning arm 2 under the driving of the second driving member 41, so that the V-shaped welding angle is always maintained between the blade 13 and the lower plate 14 at the contact part of the wind wheel and the welding torch 8. The welding line of the wheel is relatively long. It is not enough to rotate the flip arm 2 to make it inclined by 45 degrees. The welding attitude has changed when welding from one end of the blade 13 to the other end of the blade 13. If one end of the blade 13 is welded in a climbing attitude , when the other end of the blade 13 is welded in a downhill posture, the downhill posture welding will cause the welding wire to melt and flow down, resulting in the phenomenon of fusion seam stacking. In the process of moving from one end of the blade 13 to the other end, it is assumed that the welding point of one end of the blade 13 is point a, and the welding point of the other end of the blade 13 is point b. The welding torch 8 does not need to move during the welding process. Under the common rotation of the worktable 4, it slowly rotates to point a, so that the welding seam can be kept consistent and beautiful. In order to achieve the above-mentioned consistent welding seam, there are high requirements for the stability of the rotary table. The deviation of the slight angle or the small vibration may cause the melted welding wire to be offset, which will affect the final welding effect and aesthetics. . The welding rotary table eliminates the torsion force of the turning arm 2 by setting two uprights 1, so that the stability of the whole turning process and the rotating process of the workbench 4 is higher, and the connection between the wind wheel and the workbench 4 is improved by the welding tool 5 The stability of the welding seam is guaranteed to be consistent.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention should be covered by the claims of the present invention. within the defined scope of protection.

Claims

A welding rotary table for a wind wheel, comprising two symmetrically arranged uprights (1) and horizontally arranged overturning arms (2), two ends of the overturning arms (2) being rotatably connected to the two uprights (1) respectively , one of the uprights (1) is provided with a first drive mechanism that drives the turning arm (2) to turn over, and the middle of the turning arm (2) is provided with a workbench (4) and a second drive mechanism that drives the workbench (4) to rotate. A driving member (41) is provided on the worktable (4) with a welding tool (5) for fixing the wind wheel.
The welding rotary table for a wind wheel according to claim 1, wherein the first driving mechanism comprises a first driving member (31), a driving shaft (32) and a driven shaft (33) arranged coaxially ), the driving shaft (32) and the driven shaft (33) are respectively arranged on the upper ends of the two uprights (1), and the first driving member (31) is arranged in the upright (1) and can drive the driving shaft (32) Rotating, the driving shaft (32) and the driven shaft (33) are parallel to the turning arm (2) and both are fixedly connected to the turning arm (2) through the mounting plate (11).
The welding rotary table for a wind wheel according to claim 1, characterized in that: the worktable (4) is in the shape of a disc, and the diameter of the upper end face of the worktable (4) can be matched with the driving shaft (32) The central axis coincides.
The welding rotary table for a wind wheel according to claim 1, characterized in that: a cylindrical mounting portion (21) is provided in the middle of the turning arm (2), and the axial direction of the mounting portion (21) is perpendicular to the length direction of the turning arm (2), the mounting portion (21) is provided with a cavity for accommodating the second driving member (41), and the worktable (4) is rotatably fixed to the mounting portion (21) The second driving member (41) can drive the worktable (4) to rotate around the central axis of the worktable (4).
The welding rotary table for a wind wheel according to claim 1, wherein a base (6) is provided on the lower side of the upright column (1), and two ends of the base (6) are respectively connected with the two upright columns. The lower end of (1) is fixed.
The welding rotary table for a wind wheel according to any one of claims 1-5, characterized in that: the welding tool (5) comprises a base (51), a limit sleeve (52), a positioning A ring (53) and a pressure plate (54), the base (51) is fastened to the workbench (4) by fasteners, the base (51) is disc-shaped and the middle of the base (51) A cylindrical mounting post (511) is formed upward, and the mounting post (511) can pass through the through hole of the lower plate (14) of the wind wheel, the limiting sleeve (52), the positioning ring (53) and the pressure plate (54) are sequentially sleeved on the mounting post (511), the outer side of the positioning ring (53) abuts against the inner side of the upper end of the blade (13), and the upper end of the outer side of the pressure plate (54) is provided with An annular flange (541), the inner ring of the upper disk (12) of the wind wheel can abut against the lower end surface of the annular flange (541).
The welding rotary table for a wind wheel according to claim 6, characterized in that: the upper end of the positioning ring (53) is formed with an annular positioning portion (531) protruding outward, and the annular positioning portion (531) ) abuts the inner side of the upper end of the blade (13), the upper end of the positioning ring (53) is provided with a circular groove (532), and the lower end of the pressure plate (54) faces downward to form a limiting ring (542), the limit ring (542) can be inserted into the circular groove (532) and is located between the outer side wall of the mounting post (511) and the groove wall of the circular groove (532), the mounting post (532) A pressure plate (55) capable of pressing and fixing the pressure plate (54) downward is detachably fixed on the upper end surface of 511).
The welding rotary table for a wind wheel according to claim 6, characterized in that: the base (51) is provided with a plurality of grooves (512), and the grooves (512) are connected with the base (51). ) is arranged in an annular array with the central axis of the The end of the lower side can pass through the lower disc (14) and be inserted into the corresponding groove (512).
A welding equipment using the above-mentioned welding rotary table is characterized in that: the welding equipment comprises a fixing frame (7), a welding torch (8) and a welding arm mechanism for moving the welding torch (8), the welding arm mechanism One end of the welding torch (8) is rotatably connected to the fixing frame (7), and the welding torch (8) is detachably fixed to the other end of the welding arm mechanism.
The welding equipment using the welding rotary table according to claim 9, wherein the welding arm mechanism comprises a first connecting frame (91), a first arm (92), and a second connecting frame (93) and the second arm (94), the lower end of the first connecting frame (91) is rotatably connected to the fixing frame (7) through a vertically arranged rotating shaft, and the upper end of the first connecting frame (91) is rotatably connected by a horizontally arranged rotating shaft. The rotating shaft is rotatably connected to the lower end of the first arm (92), the lower end of the second connecting frame (93) is rotatably connected to the upper end of the first arm (92) through a laterally arranged rotating shaft, and the second connecting frame ( The upper end of 93) is rotatably connected to one end of the second connecting arm through a longitudinally arranged rotating shaft, and the other end of the second connecting arm is connected to the welding torch (8), which is provided with a Wire-drawing mechanism.