Fan blade welding machine

Abstract

The invention discloses a fan blade welding machine, and relates to the technical field of semi-automatic electric arc welding, the fan blade welding machine comprises an electric arc welding table, an electric arc welding gun is mounted on the electric arc welding table, a clamping jaw cylinder is fixedly mounted on the electric arc welding table, and an angle adjusting assembly and a distance adjusting assembly are arranged in the electric arc welding table; according to the device, after the blade rotation angle is adjusted, under the condition that the blade rotation angle is kept unchanged, synchronous adjustment of the distance positions between all the blades and the fan hub is achieved through the distance adjusting assembly, and therefore the gaps between the blades and the hub can be controlled, and it is ensured that the welding seam gaps are uniform and consistent; the problem that the preparation time before semi-automatic electric arc welding is long due to the fact that special welding molds are designed for different types of blades or tedious procedures of one-by-one modular adjustment are depended on is solved, so that the quality of welding seams can be improved, the connection strength between the blades and a hub is ensured, and the service life of the blades is prolonged. And the welding reliability of the semi-automatic electric arc welding equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of semi-automatic arc welding, and in particular to a fan blade welding machine. Background Art

[0002] When welding wind turbine blades, a semi-automatic arc welding device is used to mechanically fix and connect the wind turbine blades to the hub, ensuring that the blades can firmly and safely transfer kinetic energy when the wind turbine is running. It is a key device in the production of wind power equipment.

[0003] Existing semi-automatic arc blade welding machines for fans usually design different welding molds for different types of blades. This method requires the design and manufacture of dedicated welding molds for each blade. The mold design and development cycle is long, which slows down the overall production process. At the same time, when switching blade models, the existing mold needs to be removed and a new mold needs to be installed. This process requires long downtime, resulting in a long equipment time before welding and low welding efficiency.

[0004] Modular adjustment requires manual intervention, which can easily lead to errors when adjusting angles or distances. This difference in accuracy can lead to blade arc welding angle deviation, thereby reducing welding strength and overall machine performance.

[0005] In addition, the design of welding molds and modular adjustment methods are difficult to adapt to various blade specifications. Each adjustment unit in the modular design needs to be manually operated piece by piece. The operation process is relatively complicated and time-consuming, and it is difficult to quickly adapt to batch welding tasks.

[0006] In order to solve the above problems, the inventor proposed a fan blade welding machine. Summary of the invention

[0007] In order to solve the above technical problems, a fan blade welding machine is provided. This technical solution solves the problems raised in the above background technology;

[0008] To achieve the above objectives, the present invention can be implemented by the following technical solutions:

[0009] The present invention provides a fan blade welding machine, comprising an arc welding table, an arc welding gun is installed on the arc welding table, and a clamping cylinder is fixedly installed on the arc welding table;

[0010] An angle adjustment component is provided in the arc welding table, and the angle adjustment component includes a rotating shaft rotatably connected to the top of the inner cavity of the arc welding table, a cavity column is fixedly connected to the bottom of the rotating shaft, a gear ring is fixedly connected to the cavity column, five bevel gears are connected to the gear ring in an annular and equidistant meshing manner, each of the bevel gears is fixedly connected to a constraint rod on the side away from the rotating shaft, each of the constraint rods is slidably connected to a connecting rod, and each of the connecting rods is fixedly connected to a placing table at one end away from the adjacent constraint rod, five support blocks are fixedly connected to the top of the inner cavity of the arc welding table at an annular and equidistant manner, a constraint column is slidably connected in the cavity column, a follower plate is fixedly connected to the outer surface of the rotating shaft, and a limiting plate is fixedly connected to the top of the inner cavity of the arc welding table.

[0011] Preferably, each of the constraint rods is composed of a cylinder 1 and two protrusions 1 symmetrically fixed on the outer surface of the cylinder 1, and the cylinder 1 and the protrusion 1 are adapted to the connecting rod, each constraint rod is rotatably connected to a nearby support block, and each connecting rod is movably connected to the arc welding table.

[0012] Preferably, a rotary downward-pressing cylinder is installed on each of the placement platforms, and a downward-pressing column is installed on the piston rod of each rotary downward-pressing cylinder.

[0013] Preferably, the constraint column consists of a cylinder 2 and two protrusions symmetrically fixed on the upper outer surface of the cylinder 2, and the cylinder 2 and the protrusions 2 are adapted to the cavity column. An anti-slip groove 1 is provided on the outer surface of the constraint column, and the constraint column is movably connected to the arc welding table.

[0014] Preferably, the rotating shaft is in interference fit with the top of the inner cavity of the arc welding table, and the follower plate and the limiting plate are both fan-shaped.

[0015] Preferably, a distance adjustment component is provided in the arc welding table, and the distance adjustment component includes a slide plate fixedly connected to the arc welding table, five slide plates are arranged equidistantly in an annular manner, each of the slide plates is slidably connected to a slide seat, the outer wall of each slide seat is symmetrically rotatably connected to two long connecting rods, every two of the long connecting rods are rotatably connected to a connecting seat, five connecting seats are arranged equidistantly in an annular manner, five connecting seats are commonly fixedly connected to a slip ring, each of the connecting seats is fixedly connected to an extension rod on one side away from the slip ring, five limiting grooves are equidistantly provided in an annular manner on the inner cavity wall of the arc welding table, a bracket is fixedly connected to the bottom of the arc welding table, a threaded rod is rotatably connected to the bottom of the arc welding table, a guide rod is fixedly connected to the side of the arc welding table close to the threaded rod, a movable plate is slidably connected to the guide rod, and a knob is rotatably connected to the bottom of the bracket.

[0016] Preferably, each of the slide seats is rotatably connected to a neighboring connecting rod, the slip ring is rotatably connected to a constraint column, each of the extension rods is matched with a neighboring limiting groove, and each of the extension rods is slidably connected to a neighboring limiting groove.

[0017] Preferably, the threaded rod is interference fit with the bottom surface of the arc welding table, the threaded rod is rotatably connected to the bracket, the guide rod is fixedly connected to the bracket, and two limit rings are fixedly connected to the outer surface of the guide rod.

[0018] Preferably, the movable plate is threadedly connected to the threaded rod, the movable plate is rotatably connected to the constraint column, the knob is fixedly connected to the threaded rod, and an anti-slip groove 2 is provided on the outer surface of the knob.

[0019] From the above, the advantages of the present invention are:

[0020] Compared with the prior art that uses different types of blades and needs to design welding molds in advance, or modularly adjust them one by one, the angle adjustment component in the present device can synchronously adjust the welding angle positions of all blades without the need to manually adjust the blades one by one. This solves the problem of designing welding molds or modular adjustment methods, which leads to many processes, time-consuming adjustments one by one, and inconsistent angles of multiple blades. In this way, the accuracy of semi-automatic arc welding equipment is improved by ensuring that the weld angles are consistent when multiple blades are semi-automatically arc welded at the same time.

[0021] Compared with the prior art that uses different types of blades and needs to design welding molds in advance, or modularly adjust them one by one, in this device, after completing the adjustment of the blade rotation angle, the distance adjustment component is used to achieve synchronous adjustment of the distance position between all blades and the fan hub while keeping the blade rotation angle unchanged. There is no need to adjust the distance of each blade one by one, so that the gap between the blade and the hub can be controlled to ensure that the weld gap is uniform, thereby optimizing the weld formation, solving the problem of long preparation time before semi-automatic arc welding due to the cumbersome process of designing special welding molds for different types of blades or relying on modular adjustment one by one. In this way, the weld quality can be improved, the connection strength between the blade and the hub can be ensured, and the reliability of the semi-automatic arc welding equipment during welding can be further improved.

[0022] At the same time, with the cooperation of the angle adjustment component and the distance adjustment component, the welding equipment can adapt to blades of various types and specifications without the need to design a dedicated welding mold for each blade, which solves the problem of designing and making different welding molds for different blades, resulting in increased mold making and material costs. In this way, the time waste caused by designing multiple welding molds and switching welding molds can be avoided, thereby improving the flexibility of the welding equipment and effectively achieving the purpose of fixing and positioning the blades and the circular fan hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Front three-dimensional schematic diagram of the overall structure shown in the present invention;

[0024] Figure 2 Internal cutaway three-dimensional schematic diagram of the arc welding table shown in the present invention;

[0025] Figure 3 Internal top view plane schematic diagram of the arc welding table shown in the present invention;

[0026] Figure 4 Three-dimensional schematic diagram of related components of the cavity column and gear ring shown in the present invention;

[0027] Figure 5 As shown in the present invention Figure 4 Local enlarged three-dimensional schematic diagram of A in;

[0028] Figure 6 Internal cutaway three-dimensional schematic diagram of the connecting rod shown in the present invention;

[0029] Figure 7 Three-dimensional schematic diagram of related components of the explosion of the cavity column and gear ring shown in the present invention

[0030] Figure 8 Three-dimensional schematic diagram of related components of the sliding seat and long connecting rod shown in the present invention;

[0031] Fig. 9 Explosion three-dimensional schematic diagram of the restraint column and slip ring shown in the present invention;

[0032] Fig.10 Three-dimensional schematic diagram of related components of the extension rod and limit groove shown in the present invention;

[0033] Fig.11 Three-dimensional schematic diagram of related components of the bracket and guide rod shown in the present invention.

[0034] Among them, the reference numerals in the present invention are:

[0035] 1. Arc welding table; 2. Arc welding gun; 3. Jaw cylinder;

[0036] Angle adjustment assembly: 41. Rotating shaft; 42. Cavity column; 43. Gear ring; 44. Bevel gear; 45. Constraint rod; 46. Connecting rod; 47. Placing table; 48. Support block; 49. Constraint column; 410. Follow-up plate; 411. Limit plate;

[0037] Distance adjustment assembly: 51. Slide plate; 52. Sliding seat; 53. Long connecting rod; 54. Connecting seat; 55. Slip ring; 56. Extension rod; 57. Limit groove; 58. Bracket; 59. Threaded rod; 510. Guide rod; 511. Moving plate; 512. Knob. Detailed implementation mode

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0039] The embodiments provided by the present invention will be elaborated in detail below:

[0040] A fan blade welding machine, as Figure 1 shown, includes an arc welding table 1, an arc welding gun 2 is installed on the arc welding table 1, a jaw cylinder 3 is fixedly installed on the upper surface of the arc welding table 1, the jaw cylinder 3 is used to fix the fan hub, and the arc welding gun 2 is located above the jaw cylinder 3;

[0041] As Figures 2 to 7 shown, an angle adjustment component is arranged in the arc welding table 1. The angle adjustment component includes a rotating shaft 41 rotatably connected to the top surface of the inner cavity of the arc welding table 1. The bottom surface of the rotating shaft 41 is fixedly connected with a cavity column 42. A gear ring 43 is fixedly connected to one side of the cavity column 42 close to the rotating shaft 41. The rotating shaft 41, the cavity column 42 and the gear ring 43 are located on the same axis. Five bevel gears 44 are annularly and equally meshed with the gear ring 43. A constraint rod 45 is fixedly connected to one side of each bevel gear 44 away from the rotating shaft 41. A connecting rod 46 is horizontally slidably connected to each constraint rod 45. A placing table 47 is fixedly connected to one end of each connecting rod 46 away from the adjacent constraint rod 45. The five placing tables 47 are annularly and equally distributed outside the arc welding table 1. The five placing tables 47 are all in a horizontal state. Five support blocks 48 are annularly and equally fixedly connected to the top of the inner cavity of the arc welding table 1. Each support block 48 corresponds to each constraint rod 45, and each support block 48 is located directly above the adjacent constraint rod 45. A constraint column 49 is vertically slidably connected in the cavity column 42. A follower plate 410 is fixedly connected to the outer surface of the rotating shaft 41. A limiting plate 411 is fixedly connected to one side of the inner cavity of the arc welding table 1 close to the rotating shaft 41.

[0042] Further, as Figure 6As shown, each constraint rod 45 is composed of a cylinder 1 and two protrusions 1 symmetrically fixed on the outer surface of the cylinder 1, and the cylinder 1 and the protrusion 1 are adapted to the inner cavity of the connecting rod 46, and the portion of each constraint rod 45 away from the bevel gear 44 is located inside the adjacent connecting rod 46, and each constraint rod 45 is rotatably connected to the adjacent support block 48, and the protrusion 1 on each constraint rod 45 is located on the side away from the adjacent support block 48, and each connecting rod 46 is movably connected to the side wall of the arc welding table 1, and the connecting rod 46 can rotate together with the constraint rod 45 through the cylinder 1 and the protrusion 1.

[0043] Further, such as Figure 1 and Figure 6 As shown, a rotary pressing cylinder is installed on the side of each placement platform 47 away from the adjacent connecting rod 46. The rotary pressing cylinder is a prior art and will not be described in detail here. A pressing column is installed on the piston rod of each rotary pressing cylinder, and the pressing column is used to fix the blades to be welded.

[0044] Further, such as Figure 7 and Figure 8 As shown, the constraint column 49 is composed of a cylinder 2 and two protrusions 2 symmetrically fixed on the upper outer surface of the cylinder 2, and the cylinder 2 and the protrusions 2 are adapted to the inner cavity of the cavity column 42, the protrusions 2 in the constraint column 49 are located inside the cavity column 42, and the protrusions 2 in the constraint column 49 are limitedly matched with the cavity column 42, the portion of the constraint column 49 close to the gear ring 43 is located inside the cavity column 42, and an anti-skid groove 1 is provided on the lower portion of the outer surface of the constraint column 49, the anti-skid groove 1 is used to facilitate the staff to touch and identify the constraint column 49, the anti-skid groove 1 can also prevent the staff from slipping during the rotation of the constraint column 49, the constraint column 49 is movably connected to the arc welding table 1, and the cavity column 42 can rotate with the constraint column 49 through the cylinder 2 and the protrusions 2.

[0045] Further, such as Figure 5 As shown, the rotating shaft 41 and the top surface of the inner cavity of the arc welding table 1 are in interference fit, the follower plate 410 and the limit plate 411 are both fan-shaped, the centers of the rotating shaft 41, the follower plate 410 and the limit plate 411 are located on the same axis, and the follower plate 410 and the limit plate 411 are in close contact.

[0046] Further, such as Figures 8 to 11As shown in the figure, a distance adjustment component is provided inside the arc welding table 1. The distance adjustment component includes a sliding plate 51 fixedly connected to the side wall of the inner cavity of the arc welding table 1. There are five sliding plates 51 arranged equidistantly in a ring. Each sliding plate 51 is located directly below the adjacent constraint rod 45. A sliding seat 52 is horizontally slidably connected to each sliding plate 51. Two long connecting rods 53 are symmetrically rotatably connected to the outer side wall of each sliding seat 52. The sides of every two long connecting rods 53 away from the adjacent sliding seat 52 are jointly rotatably connected to a connecting seat 54. There are five connecting seats 54 arranged equidistantly in a ring. The five connecting seats 54 are jointly fixedly connected to a sliding ring 55. The sliding ring 55 is located in the middle of the outer surface of the constraint column 49. A extending rod 56 is fixedly connected to the side of each connecting seat 54 away from the sliding ring 55. Five limiting grooves 57 are arranged equidistantly in a ring on the side wall of the inner cavity of the arc welding table 1. Each limiting groove 57 corresponds to each extending rod 56. A bracket 58 is fixedly connected to the bottom surface of the arc welding table 1. A threaded rod 59 is rotatably connected to one side of the arc welding table 1 close to the bracket 58. A guide rod 510 is fixedly connected to one side of the arc welding table 1 close to the threaded rod 59. The threaded rod 59 and the guide rod 510 are arranged side by side. A moving plate 511 is slidably connected to the outer surface of the guide rod 510. A knob 512 is rotatably connected to the bottom surface of the bracket 58.

[0047] Further, as Figure 8 and Fig.10 shown, each sliding seat 52 is rotatably connected to the adjacent connecting rod 46, the sliding ring 55 is rotatably connected to the constraint column 49, and the part of each extending rod 56 away from the sliding ring 55 is vertically slidably connected to the adjacent limiting groove 57.

[0048] Further, as Fig.10 shown, the threaded rod 59 is in interference fit with the bottom surface of the arc welding table 1. The end of the threaded rod 59 away from the arc welding table 1 is rotatably connected to the bracket 58. The end of the guide rod 510 away from the arc welding table 1 is fixedly connected to the bracket 58. Two limiting rings are fixedly connected to the outer surface of the guide rod 510. The limiting rings are used to limit the moving distance of the moving plate 511. The two limiting rings are respectively located in the middle and lower parts of the outer surface of the guide rod 510. The moving plate 511 is in contact with the middle limiting ring.

[0049] Further, as Fig.10 shown, the moving plate 511 is threadedly connected to the threaded rod 59. The moving plate 511 is rotatably connected to the lower part of the center of the constraint column 49. The knob 512 is fixedly connected to the threaded rod 59. An anti-slip groove two is provided on the outer surface of the knob 512. The anti-slip groove two is used to facilitate the staff to touch and identify the knob 512. The anti-slip groove two can also prevent the staff from slipping during the process of rotating the knob 512.

[0050] During operation:

[0051] Before welding, the device can synchronously adjust the rotation angles of all the blades to be welded. The detailed steps are as follows:

[0052] When welding of fan blades is required, the staff places the fan hub on the upper surface of the clamp cylinder 3, and starts the clamp cylinder 3 through the controller, so that the clamps in the clamp cylinder 3 fix the fan hub. When the fan hub is fixed, the five blades to be welded are placed on the upper surface of five placement tables 47, and the controller is used to start the rotating downward pressure cylinder on each placement table 47, so that the downward pressure column on the piston rod of the rotating downward pressure cylinder fixes the blades. In this way, the fan hub and the blades to be welded are fixed.

[0053] After completing the fixation of the fan hub and the blades that need to be welded, the staff grabs the constraint column 49 and touches the anti-skid groove 1 on the constraint column 49, and then rotates the constraint column 49 counterclockwise. Since the protrusion 2 on the outer surface of the constraint column 49 is located inside the cavity column 42, the constraint column 49 drives the cavity column 42 to rotate counterclockwise with the constraint column 49, and further makes the gear ring 43 and the rotating shaft 41 rotate together with the cavity column 42. During the counterclockwise rotation of the gear ring 43, since the five bevel gears 44 are all engaged with the gear ring 43, the five bevel gears 44 rotate forward synchronously, and further make the constraint rod 45 rotate forward together with the bevel gear 44. Since the protrusion 1 on the outer surface of the constraint rod 45 is located inside the cavity column 42, the constraint rod 45 drives the cavity column 42 to rotate counterclockwise with the constraint column 49. The connecting rod 46 is inside, so the connecting rod 46, the placement table 47 and the blades on the placement table 47 rotate together with the constraint rod 45. When the rotation angle of the blade to be welded has been adjusted as needed, the staff releases and stops rotating the constraint column 49. Since the rotating shaft 41 has an interference fit with the top surface of the inner cavity of the arc welding table 1, after the staff lets go, the constraint column 49, the cavity column 42 and the rotating shaft 41 remain stationary, and further make the bevel gear 44, the constraint rod 45, the placement table 47 and the blades on the placement table 47 remain stationary. In this way, the staff can synchronously adjust the rotation angles of the five blades that need to be welded by rotating the constraint column 49 counterclockwise.

[0054] In the above process, compared with the prior art that uses different types of blades and needs to design welding molds in advance, or modularly adjust them one by one, the angle adjustment component in the present device can synchronously adjust the welding angle positions of all blades without the need to manually adjust the blades one by one. This solves the problem of designing welding molds or modular adjustment methods, which leads to many processes and time-consuming adjustments one by one, and inconsistent angles of multiple blades. In this way, the accuracy of semi-automatic arc welding equipment is improved by ensuring that the weld angles are consistent when multiple blades are semi-automatically arc welded at the same time.

[0055] When the constraint column 49 rotates counterclockwise, since the slip ring 55 is movably connected to the constraint column 49 and the portions of the five extension rods 56 away from the slip ring 55 are all located inside the adjacent limiting grooves 57, the limiting grooves 57 limit the rotation of the slip ring 55, further allowing the slip ring 55 to remain stationary when the constraint column 49 rotates.

[0056] When the restraining column 49 rotates counterclockwise, the follower plate 410 on the rotating shaft 41 rotates counterclockwise along with the restraining column 49 and moves away from the limiting plate 411 .

[0057] The device can synchronously adjust the distance between all blades to be welded and the fan hub before welding. The detailed steps are as follows:

[0058] After the required welding blade rotation angle is adjusted, the worker grabs the knob 512 and touches the second anti-slip groove on the knob 512, and then rotates the knob 512 counterclockwise. During the counterclockwise rotation of the knob 512, the movable plate 511 moves vertically downward along the outer surface of the guide rod 510, so that the movable plate 511 leaves the limiting ring in the middle of the outer surface of the guide rod 510.

[0059] During the vertical downward movement of the movable plate 511, the movable plate 511 drives the constraint column 49 to move vertically downward along the inner wall of the cavity column 42, and the constraint column 49 does not rotate when moving vertically downward, further making the slip ring 55 move vertically downward with the constraint column 49, and the slip ring 55 does not rotate when moving vertically downward.

[0060] During the vertical downward movement of the slip ring 55, the five connecting seats 54 on the slip ring 55 pull the adjacent slide seats 52 through the long connecting rod 53, so that the five slide seats 52 move horizontally along the adjacent slide plate 51 toward the side close to the rotating shaft 41, and further make the five slide seats 52 drive the adjacent connecting rods 46, the placement table 47 and the blades on the placement table 47 to move horizontally. When the staff adjusts the distance between the blades on the placement table 47 and the fan hub as needed, the staff releases the knob 512. Since the threaded rod 59 has an interference fit with the bottom surface of the arc welding table 1, after the staff releases their hands, the threaded rod 59, the moving plate 511 and the restraining column 49 remain stationary, further making the slide seat 52, the connecting rod 46, the placement table 47 and the blades on the placement table 47 remain stationary. In this way, the staff can synchronously adjust the distance between all blades that need to be welded and the fan hub by turning the knob 512 counterclockwise or clockwise.

[0061] In the above process, compared with the prior art that uses different types of blades and needs to design welding molds in advance, or modularly adjust them one by one, in the present device, after completing the adjustment of the blade rotation angle, the blade rotation angle is kept unchanged, and the distance position between all blades and the fan hub is synchronously adjusted through the distance adjustment component. There is no need to adjust the distance of each blade one by one, so that the gap between the blade and the hub can be controlled to ensure that the weld gap is uniform, thereby optimizing the weld formation, solving the problem of long preparation time before semi-automatic arc welding due to the cumbersome process of designing special welding molds for different types of blades or relying on modular adjustment one by one. In this way, the weld quality can be improved, the connection strength between the blade and the hub can be ensured, and the reliability of the semi-automatic arc welding equipment during welding can be further improved.

[0062] When the rotation angle of the required welding blade and the distance between the blade and the hub are adjusted, the staff starts the arc welding gun 2 through the controller, and welds by manually holding the arc welding gun 2 or removing the arc welding gun 2 and installing it on a robotic arm for automatic welding.

[0063] When the welding work between the blades and the fan hub is completed, the staff starts the clamping cylinder 3 and the rotating downward pressure cylinder on the placement table 47 through the controller, so that the clamping claws on the clamping cylinder 3 and the downward pressure columns in the five rotating downward pressure cylinders are separated from the welded fan. Then the staff removes the welded fan, puts on the fan hub and blades of the same model, and then starts the clamping cylinder 3 and the rotating downward pressure cylinder through the controller to complete the fixation of the fan hub and blades. Then, the arc welding gun 2 is started through the controller, and this step is repeated to complete the welding work between this model batch of blades and the fan hub.

[0064] After completing all the welding work, repeat the above steps in reverse, that is, rotate the constraint column 49 and the knob 512 clockwise. In the process of rotating the constraint column 49 clockwise, the gear ring 43 and the rotating shaft 41 rotate clockwise together with the constraint column 49, and the follower plate 410 on the outer surface of the rotating shaft 41 rotates together with the rotating shaft 41. When the follower plate 410 rotates back to the initial position and fits with the limit plate 411, stop rotating the gear ring 43. In this process, the gear ring 43 enables the five bevel gears 44 to drive the constraint rod 45, the connecting rod 46 and the placement table 47 to rotate back to the initial position. At this time, the five placement tables 47 are in a horizontal state.

[0065] During the clockwise rotation of the knob 512, the movable plate 511 moves vertically upward along the guide rod 510, and further the movable plate 511 drives the constraint column 49 and the slip ring 55 to move vertically upward, and the constraint column 49 and the slip ring 55 do not rotate during the vertical upward movement. During the vertical upward movement of the slip ring 55, the five connecting seats 54 push the slide 52 through the long connecting rod 53, so that the slide 52 drives the connecting rod 46 and the placement table 47 to move horizontally along the slide plate 51 until the movable plate 511 is re-fitted with the limit ring in the middle of the outer surface of the guide rod 510, and then the knob 512 is stopped. At this time, the five limit slots 57 have returned to their initial positions.

[0066] If you need to weld fans of different models, repeat the above steps and adjust the blade rotation angle and the distance between the blade and the fan hub as needed.

[0067] In the above process, with the cooperation of the angle adjustment component and the distance adjustment component, the welding equipment can adapt to blades of various types and specifications without the need to design a dedicated welding mold for each blade. This solves the problem of designing and making different welding molds for different blades, which leads to increased mold making and material costs. In this way, the time waste caused by designing multiple welding molds and switching welding molds can be avoided, thereby improving the flexibility of the welding equipment and effectively achieving the purpose of fixing and positioning the blades and the circular fan hub.

[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan blade welding machine, comprising an arc welding table (1), characterized in that: An arc welding gun (2) is mounted on the arc welding table (1), and a clamping cylinder (3) is fixedly mounted on the arc welding table (1); An angle adjustment component is provided in the arc welding table (1), and the angle adjustment component comprises a rotating shaft (41) rotatably connected to the top of the inner cavity of the arc welding table (1), a cavity column (42) is fixedly connected to the bottom of the rotating shaft (41), a gear ring (43) is fixedly connected to the cavity column (42), and five bevel gears (44) are equidistantly meshed and connected to the gear ring (43), and each bevel gear (44) is fixedly connected to a restraining rod (45) on one side away from the rotating shaft (41). The constraint rods (45) are slidably connected to connecting rods (46), and one end of each connecting rod (46) away from the adjacent constraint rod (45) is fixedly connected to a placement table (47). Five support blocks (48) are fixedly connected in an annular manner at equal intervals at the top of the inner cavity of the arc welding table (1). A constraint column (49) is slidably connected in the cavity column (42). A follower plate (410) is fixedly connected to the outer surface of the rotating shaft (41). A limiting plate (411) is fixedly connected to the top of the inner cavity of the arc welding table (1).

2. A fan blade welding machine according to claim 1, characterized in that: Each of the restraining rods (45) is composed of a cylinder and two protrusions symmetrically fixed on the outer surface of the cylinder, and the cylinder and the protrusions are compatible with the connecting rod (46). Each of the restraining rods (45) is rotatably connected to a nearby support block (48), and each of the connecting rods (46) is movably connected to the arc welding table (1).

3. A fan blade welding machine according to claim 1, characterized in that: A rotary downward-pressing cylinder is installed on each of the placement platforms (47), and a downward-pressing column is installed on the piston rod of each rotary downward-pressing cylinder.

4. A fan blade welding machine according to claim 1, characterized in that: The restraint column (49) is composed of a second cylinder and two second protrusions symmetrically fixed on the upper outer surface of the second cylinder, and the second cylinder and the second protrusions are compatible with the cavity column (42). The outer surface of the restraint column (49) is provided with an anti-slip groove (1), and the restraint column (49) is movably connected to the arc welding table (1).

5. A fan blade welding machine according to claim 1, characterized in that: The rotating shaft (41) is in interference fit with the top of the inner cavity of the arc welding table (1), and the follower plate (410) and the limiting plate (411) are both fan-shaped.

6. A fan blade welding machine according to claim 1, characterized in that: The arc welding table (1) is provided with a distance adjustment component, the distance adjustment component comprising a slide plate (51) fixedly connected to the arc welding table (1), five slide plates (51) being arranged in an annular pattern at equal intervals, each of the slide plates (51) being slidably connected to a slide seat (52), the outer wall of each slide seat (52) being symmetrically rotatably connected to two long connecting rods (53), every two of the long connecting rods (53) being rotatably connected to a connecting seat (54), five connecting seats (54) being arranged in an annular pattern at equal intervals, the five connecting seats (54) being fixedly connected to a slip ring (55), each An extension rod (56) is fixedly connected to the side of the connection seat (54) away from the slip ring (55); five limiting grooves (57) are equidistantly arranged in a circular shape on the inner cavity wall of the arc welding table (1); a bracket (58) is fixedly connected to the bottom of the arc welding table (1); a threaded rod (59) is rotatably connected to the bottom of the arc welding table (1); a guide rod (510) is fixedly connected to the side of the arc welding table (1) close to the threaded rod (59); a movable plate (511) is slidably connected to the guide rod (510); and a knob (512) is rotatably connected to the bottom of the bracket (58).

7. A fan blade welding machine according to claim 6, characterized in that: Each of the slide seats (52) is rotatably connected to a corresponding connecting rod (46), the slip ring (55) is rotatably connected to a restraining column (49), each of the extension rods (56) is matched to a corresponding limiting groove (57), and each of the extension rods (56) is slidably connected to a corresponding limiting groove (57).

8. A fan blade welding machine according to claim 6, characterized in that: The threaded rod (59) is interference fit with the bottom surface of the arc welding table (1); the threaded rod (59) is rotatably connected to the bracket (58); the guide rod (510) is fixedly connected to the bracket (58); and two limit rings are fixedly connected to the outer surface of the guide rod (510).

9. A fan blade welding machine according to claim 6, characterized in that: The movable plate (511) is threadedly connected to the threaded rod (59), the movable plate (511) is rotatably connected to the constraint column (49), the knob (512) is fixedly connected to the threaded rod (59), and the outer surface of the knob (512) is provided with a second anti-slip groove.

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