CN107234376B

CN107234376B - Automatic welding machine for outer rotor fan blade

Info

Publication number: CN107234376B
Application number: CN201710576543.1A
Authority: CN
Inventors: 赵相雷
Original assignee: Jinhua Yuanda Welding Equipment Co ltd
Current assignee: Jinhua Yuanda Welding Equipment Co ltd
Priority date: 2017-07-14
Filing date: 2017-07-14
Publication date: 2023-05-30
Anticipated expiration: 2037-07-14
Also published as: CN107234376A

Abstract

The invention relates to an automatic welding machine for outer rotor fan blades, which comprises: a chassis; the indexing expansion steering mechanism is arranged in the case; the two welding gun profiling mechanisms are symmetrically arranged in the chassis and are positioned above the indexing expansion steering mechanism; the two welding gun wire feeders are symmetrically arranged on two sides of the upper end of the case; the blade feeding positioning machine is arranged on the chassis and is positioned between the two welding gun shape preventing mechanisms. The invention has novel conception, reasonable design and lower production cost, can stably arrange the workpiece to be welded by arranging the indexing expansion rotating mechanism, simultaneously ensures that the workpiece to be welded moves in multiple dimensions, is convenient for accurate welding and processing under the condition of automatic control, ensures welding quality and is more convenient to operate.

Description

Automatic welding machine for outer rotor fan blade

Technical Field

The invention relates to the technical field of machinery, in particular to an automatic welding machine for outer rotor fan blades.

Background

At present, the outer rotor fan blade is welded manually by manpower, and the welding of each welding spot is difficult to be balanced due to the proficiency and working attitude of a person, the rotor balance degree is poor, the manufacturing efficiency is low, and especially the deformation of the welded blade is serious, so that the stability of the rotor is affected, the manufacturing precision and the product quality of a product are greatly reduced, namely, the welding is performed by using a robot processing device, and the requirements on the culture level of operators are high due to the overlarge equipment investment, and the cost is high.

Disclosure of Invention

The invention aims to solve the technical problems of the prior art and provides an automatic welding machine for outer rotor fan blades, so as to solve at least one of the technical problems.

The technical scheme for solving the technical problems is as follows: an automatic welding machine for outer rotor fan blades, comprising:

the upper end of the inside of the case is provided with a guide rail through a fixed plate;

the indexing expansion steering mechanism is arranged in the case;

the two welding gun profiling mechanisms are symmetrically arranged in the chassis and are positioned above the indexing expansion steering mechanism;

the two welding gun wire feeders are symmetrically arranged on two sides of the upper end of the chassis and are in sliding connection with the guide rail through sliding blocks, and each welding gun wire feeder is connected with a welding gun on the welding gun shape preventing mechanism through a wire feeding pipe;

the blade feeding positioning machine is arranged on the chassis and is positioned between the two welding gun wire feeding machines.

The beneficial effects of the invention are as follows: the chassis serves as the main frame structure of the whole device and is used for setting and protecting other mechanisms. The indexing expansion steering mechanism is used for arranging workpieces to be welded, the two welding gun shape preventing mechanisms are used as setting mechanisms of welding guns, and the welding guns are specifically controlled to weld the workpieces; in order to match with the two welding gun shape preventing mechanisms, a welding gun wire feeder corresponding to the welding gun profiling mechanisms is arranged above the case, welding wires are fed to the welding gun profiling mechanisms, and the blade feeding positioning machine is used for accurately positioning feeding of the blades; when the device is used for welding, the welding track is stable and reliable, the space is saved, the die is more convenient to replace, a special welding technician is not needed, the production cost and the labor cost are saved, and the welding efficiency is higher.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the indexing expansion steering mechanism includes:

the base box is fixed in the case, and a driving motor is arranged on the base box seat;

the rotary mechanism comprises a driving cylinder and a rotary hollow shaft, the driving cylinder is arranged in the base box, a push rod of the driving cylinder is connected with the rotary hollow shaft through a rotary arm, the rotary hollow shaft penetrates through an upper cover plate of the base box, and a rotary fixing outer sleeve is sleeved on the outer side of the rotary hollow shaft;

the base plate is arranged at the upper end of the rotary hollow shaft, and a positioning hole is formed in the base plate;

the positioning mechanism comprises a positioner, a positioning cylinder and a positioning pin, wherein the positioner is arranged on the base box;

the fixing mechanism is connected with the base plate through two bearing seats.

Further, the fixing mechanism includes:

the hollow expansion shaft is connected with the two bearing seats, a driven gear is sleeved on the outer side of the hollow expansion shaft, and the driven gear is connected with the output end of the driving motor;

the expansion cylinder is connected with one bearing seat through a cylinder connecting seat, a push rod of the expansion cylinder is connected with a taper sleeve pull rod, and the taper sleeve pull rod is arranged in the hollow expansion shaft in a penetrating manner;

the hollow taper sleeve is arranged inside one end, far away from the expansion cylinder, of the hollow expansion shaft, and a fixing sleeve for positioning a workpiece is arranged at one end, close to the hollow taper sleeve, of the hollow expansion shaft.

Further, the welding gun profiling mechanism comprises:

the quick gun feeding and discharging cylinder is connected with the sliding block through a cylinder rod connecting plate, and a cylinder sleeve of the quick gun feeding and discharging cylinder is connected with the case through a cylinder seat plate;

the transverse profiling mechanism is connected with the cylinder rod connecting plate;

the longitudinal profiling mechanism is arranged in the transverse profiling mechanism;

the upper profiling mechanism and the lower profiling mechanism are perpendicular to a plane formed by the transverse profiling mechanism and the longitudinal profiling mechanism, and the welding gun is arranged at the lower ends of the upper profiling mechanism and the lower profiling mechanism.

Further, the lateral profiling mechanism comprises:

the movable sliding plate is connected with the cylinder rod connecting plate;

the transverse track template is connected with the movable slide plate through two connecting plates;

the sliding frame is connected with the two first guide rods in a sliding mode.

Further, the longitudinal profiling mechanism comprises:

the two second guide rods are arranged in the sliding frame and are perpendicular to the first guide rod;

the cross slide block is sleeved on the second guide rod;

the longitudinal profiling spring is sleeved on the second guide rod, one end of the longitudinal profiling spring is in contact with the cross slide block, and the other end of the longitudinal profiling spring is in contact with the inner wall of the sliding frame.

Further, the upper and lower profiling mechanisms include:

the two upper and lower adjusting screw rods are connected with the cross slide block in a sliding manner and are vertical to the horizontal plane;

the upper and lower adjusting triaxial seat is sleeved on the two upper and lower adjusting lead screws and is positioned below the transverse track template;

the upper profiling spring and the lower profiling spring are sleeved on the upper and lower adjusting screw rod, one end of the upper and lower profiling spring is contacted with the upper and lower adjusting triaxial seat, and the other end of the upper and lower profiling spring is contacted with the transverse track template;

the upper profiling bearing and the lower profiling bearing are arranged at the part of the upper and lower adjusting screw rod positioned at the upper end of the movable slide plate;

the curved surface profiling mold is arranged on the movable sliding plate and is positioned below the upper profiling bearing and the lower profiling bearing.

Further, one side of the up-down adjustment three-axis seat is connected with a gun lifting cylinder, the tail end of a gun lifting cylinder rod is connected with an adjuster seat, and the welding gun is arranged on the adjuster seat.

Further, the welding gun profiling mechanism further comprises a positioning device for limiting the travel of the cylinder rod of the quick advance and retreat gun cylinder, the positioning device is arranged on the side wall of the chassis, a positioning adjusting rod corresponding to the cylinder rod of the quick advance cylinder is arranged on the positioning device, the positioning adjusting rod and the cylinder rod are positioned on the same horizontal line, and an adjusting handle for adjusting the depth of the positioning adjusting rod is arranged on the positioning device.

Further, the blade feeding positioning machine includes:

the machine body is connected with the machine case through a machine body seat, and an upper fixed guide rail and a lower fixed guide rail are arranged on one side of the machine body;

the up-and-down moving slide plate is connected with the up-and-down fixed guide rail in a sliding way;

the machine body is provided with an upward limit (521) and a downward limit for limiting the travel of the up-and-down moving slide plate.

Drawings

FIG. 1 is a schematic diagram of an outer rotor fan blade welder according to the present invention;

fig. 2 is a schematic structural view of the indexing expansion steering mechanism according to the present invention.

FIG. 3 is a schematic view of an alternative angle of the indexing expansion steering mechanism according to the present invention;

FIG. 4 is a schematic structural view of a profiling mechanism of the welding gun according to the present invention;

FIG. 5 is a schematic view of another angle of the profiling mechanism of the welding gun according to the present invention;

FIG. 6 is a schematic view of a partial structure of a welding gun profiling mechanism according to the present invention;

FIG. 7 is a cross-sectional view of B-B of FIG. 6 in accordance with the present invention;

fig. 8 is a schematic structural view of the blade positioning feeder according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

100. a chassis; 110. a guide rail; 111. a slide block; 120. a workpiece to be welded; 200. an indexing expansion steering mechanism; 210. a base box; 211. an upper cover plate; 212. a driving motor; 213. a buffer limiting piece; 221. a driving cylinder; 222. a rotating arm; 223. rotating the hollow shaft; 224. a rotary fixing jacket; 225. rotating the combined seat; 226. positioning a buffer rod; 230. a base plate; 240. a first positioning mechanism; 241. a positioner; 242. positioning a cylinder; 243. a positioning pin; 250. a fixing mechanism; 251. an expansion cylinder; 251a, a cylinder connecting seat; 252. a hollow expansion shaft; 252a, a driven gear; 252b, taper sleeve tie rod; 252c, a fixed sleeve; 253. a hollow taper sleeve; 300. a welding gun profiling mechanism; 310. a fast gun feeding and discharging cylinder; 311. a cylinder rod connecting plate; 312. a cylinder seat plate; 321. a moving slide plate; 321a, a connecting plate; 322. a transverse track template; 323. a first guide bar; 324. a sliding frame; 325. a transverse driving motor; 326. an inductive switch; 326a, an inductive switch seat plate; 327. a transverse profiling bearing; 328. a transverse driving motor; 328a, a drive nut; 331. a second guide bar; 332. a cross slide block; 333. a longitudinal profiling spring; 341. adjusting a screw rod up and down; 341a, adjusting a screw handle up and down; 342. adjusting the three shaft seats up and down; 342a, a triaxial connector; 343. an upper and lower profile spring; 344. upper and lower profiling bearings; 344a, upper and lower contoured bearing seats; 345. curved surface profiling mold; 350. a positioning device; 351. positioning an adjusting rod; 352. an adjustment handle; 353. fastening a handle; 354. a pointer; 400. a welding gun wire feeder; 410. a wire feeding tube; 500. a blade feeding positioning machine; 510. a body; 511. a body seat; 520. a slide rail is fixed up and down; 521. uplink limiting; 522. limiting in a descending way; 530. moving the slide plate up and down; 540. blade positioning die; 541. the blade adsorbs an electromagnet; 542. blade in-place detection electrode; 550. a feeding cylinder; 600. a welding gun; 610. a gun lifting cylinder; 611. a gun lifting cylinder seat; 620. an adjustor; 621. an adjuster seat; 700. a power distribution cabinet; 800. and operating the control box.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

The automatic welding machine for the outer rotor fan blades shown in fig. 1 comprises a machine case 100, an indexing expansion steering mechanism 200, two welding gun profiling mechanisms 300, two welding gun wire feeders 400, a blade feeding positioning machine 500, a power distribution cabinet 700 and an operation control box 800; wherein, the upper end of the inside of the case 100 is provided with a guide rail 110 through a fixing plate; the indexing expansion steering mechanism 200 is arranged in the case 100; the two welding gun profiling mechanisms 300 are symmetrically arranged in the chassis 100 and are both positioned above the indexing expansion steering mechanism 200; the two welding gun wire feeders 400 are symmetrically arranged at two sides of the upper end of the chassis 100 and are both in sliding connection with the guide rail 110 through a sliding block 111, and each welding gun wire feeder 400 is connected with a welding gun 600 on the welding gun shape preventing mechanism 300 through a wire feeding pipe 410; the blade feeding and positioning machine 500 is installed on the chassis 100 and located between the two welding torch wire feeders 400.

Compared with the prior art, the case 100 of the invention is used as a main frame structure of the whole device for setting and protecting other mechanisms, and the case 100 is stably placed when in use; the indexing expansion steering mechanism 200 is used for placing a workpiece 120 to be welded, and the two welding gun shape preventing mechanisms 300 are used as setting mechanisms of the welding gun 700, and specifically control the welding gun 700 to weld the workpiece 120 to be welded; in order to cooperate with the two welding gun shape preventing mechanisms 300, a welding gun wire feeder 400 corresponding to the welding gun profiling mechanisms 300 is arranged above the case 100, welding wires are fed to the welding gun profiling mechanisms 300, and the blade feeding positioning machine 500 is used for accurately positioning feeding of blades; when the device is used for welding, the welding track is stable and reliable, the space is saved, the die is more convenient to replace, a special welding technician is not needed, the production cost and the labor cost are saved, and the welding efficiency is higher.

In this embodiment, for the same functional purpose of the two welding gun shape preventing mechanisms 300, and the two welding gun shape preventing mechanisms 300 need to be automatically moved according to the situation during actual operation, both welding gun shape preventing mechanisms 300 are slidably arranged on a transversely arranged guide rail 110 through a sliding block 111, and the guide rail 110 is fixedly arranged on the chassis 100. Similarly, for the same purpose and function of the two welding torch wire feeders 400, and for simplicity of arrangement, the two welding torch wire feeders 400 are identical in structure and are arranged corresponding to the two welding torch profiling mechanisms 300, so that one welding torch wire feeder 400 is guaranteed to feed welding wires for one welding torch profiling mechanism 300. In order to supply power to related devices, a power supply is required, and the power supply is conveniently arranged in the case 100, and a power distribution cabinet is arranged in one side of the case 100. In order to control the corresponding mechanism by the PLC control system and to facilitate the installation of the operation panel on the cabinet 100, an operation control box 800 is provided on the cabinet.

As shown in fig. 2-3, the indexing expansion steering mechanism 200 includes a base housing 210, a rotating mechanism 220, a base plate 230, a first positioning mechanism 240, and a fixing mechanism 250; wherein, the base box 210 is fixed in the chassis 100, and a driving motor 212 is disposed on the base box 210; the rotating mechanism 220 comprises a driving cylinder 221 and a rotating hollow shaft 223, the driving cylinder is arranged in the base box, a push rod of the driving cylinder is connected with the rotating hollow shaft through a rotating arm, the rotating hollow shaft penetrates through an upper cover plate of the base box, and a rotating fixing outer sleeve is sleeved on the outer side of the rotating hollow shaft; the base plate is arranged at the upper end of the rotary hollow shaft, and a positioning hole is formed in the base plate; the positioning mechanism comprises a positioner, a positioning cylinder and a positioning pin, wherein the positioner is arranged on the base box, the positioning cylinder is arranged on the positioner, and the positioning pin is vertically arranged and is connected with a push rod of the positioning cylinder, inserted into the positioning hole or removed from the positioning hole; the fixing mechanism is connected with the base plate through two bearing seats. The workpiece to be welded is connected with the fixing mechanism.

Specifically, the fixing mechanism includes:

the hollow expansion shaft 252 is connected with the two bearing seats, a driven gear 252a is sleeved outside the hollow expansion shaft 252, and the driven gear 252a is connected with the output end of the driving motor 212;

the expansion cylinder 251 is connected with one bearing seat through a cylinder connecting seat 251a, a push rod of the expansion cylinder 251 is connected with a taper sleeve pull rod 252b, and the taper sleeve pull rod 252b is arranged in the hollow expansion shaft 252 in a penetrating manner;

the hollow taper sleeve 253 is arranged inside one end of the hollow expansion shaft 252 far away from the expansion cylinder 251, and a fixing sleeve 252c for positioning a workpiece is arranged at one end of the hollow expansion shaft 252 close to the hollow taper sleeve 253.

In the present embodiment, a specific preferable configuration of the indexing-tension steering mechanism 4 is as follows. The indexing expansion steering mechanism 200 comprises a base box 210, a rotary driving cylinder 221 is arranged in the base box 210, a cylinder push rod of the rotary driving cylinder 221 is connected to a rotary hollow shaft 223 through a rotary arm 222, a rotary fixing jacket 224 is sleeved outside the rotary hollow shaft 223, the upper end of the rotary fixing jacket 224 is fixedly connected to an upper cover plate 211 of the base box 210, the rotary hollow shaft 221 penetrates through the base box 210, the upper end of the rotary hollow shaft 221 is connected to a base plate 230, two bearing seats are arranged at two ends of the base plate 230, a hollow expansion shaft 252 is arranged on the two bearing seats through bearings, a workpiece position positioning sleeve 252c is sleeved at one end of the hollow expansion shaft 252, a driven gear 212a matched with a driving motor 212 is sleeved at the other end of the hollow expansion shaft 252, a shaft sleeve 252b is sleeved in the hollow expansion shaft 252, the rear end of the shaft sleeve 252b is connected with an expansion cylinder 253, the expansion cylinder 251 is fixed on one bearing seat through a cylinder connecting seat 251a, and the front end of the shaft sleeve 252b is connected with a hollow expansion shaft 253 through a double thrust sleeve 253; the base plate 230 is provided with a positioner 241 on the base box 210, which is used to cooperate with the base plate 230, a welding position positioning cylinder 242 is arranged in the base box 210 of the positioner 241, the welding position positioning cylinder 242 is vertically arranged, a cylinder rod of the welding position positioning cylinder 242 is connected with a positioning pin 243 used to fix the base plate, and the upper surface of the base box 210 is also provided with a fetching and placing position buffering limiting piece 213.

As shown in fig. 4-7, the welding gun profiling mechanism 300 includes:

a fast-feeding and discharging air cylinder 310, wherein the fast-feeding and discharging air cylinder 310 is connected with the sliding block 111 through an air cylinder rod connecting plate 311, and a cylinder sleeve of the fast-feeding and discharging air cylinder 310 is connected with the case 100 through an air cylinder seat plate 312;

a lateral profiling mechanism comprising a moving slide 321, a lateral track template 322, a first guide bar 323 and a slide frame 324; the moving slide plate 321 is connected with the cylinder rod connecting plate 311, the transverse track template 322 is connected with the moving slide plate 321 through two connecting plates 321a, two first guide rods 323 are arranged between the two connecting plates 321a side by side, and the sliding frame 324 is in sliding connection with the two first guide rods 323;

a longitudinal profiling mechanism comprising a second guide rod 331, a cross slide 332 and a longitudinal profiling spring 333; the two second guide rods 331 are arranged in the sliding frame 324 and are perpendicular to the first guide rod 323, the cross slide blocks 332 are sleeved on the second guide rods 331, wherein one longitudinal profiling spring 333 is sleeved on one second guide rod 331, one end of the longitudinal profiling spring 333 is contacted with the cross slide blocks 332, and the other end of the longitudinal profiling spring 333 is contacted with the inner wall of the sliding frame 324;

the upper and lower profiling mechanisms comprise two upper and lower adjusting lead screws 341, an upper and lower adjusting three-shaft seat 342 and an upper and lower profiling spring 343; the two vertical adjustment screws 341 are slidably connected with the cross slide 111 and are perpendicular to the horizontal plane, the vertical adjustment three shaft bases 342 are sleeved on the two vertical adjustment screws 341, wherein one vertical adjustment lever 341 is sleeved with a vertical profiling spring 343, one end of the vertical profiling spring 343 is in contact with the vertical adjustment three shaft bases 342, and the other end of the vertical profiling spring 343 is in contact with the transverse track template 322.

Specifically, as shown in fig. 6, the upper and lower profiling mechanisms further include:

an upper and lower profiling bearing 344, wherein the upper and lower profiling bearing 344 is provided at a portion of the upper and lower adjusting screw 341 located at the upper end of the moving slide 321;

and a curved surface profiling mold 345, wherein the upper and lower curved surface profiling molds 345 are arranged on the movable slide plate 321 and are positioned below the upper and lower profiling bearings 344.

One side of the up-down adjustment triple shaft seat 342 is connected with a gun lifting cylinder 610, the tail end of the cylinder rod of the gun lifting cylinder 610 is connected with an adjuster seat 621, and the welding gun 600 is arranged on the adjuster seat 621.

As shown in fig. 4, the welding gun profiling mechanism 300 further includes a positioning device 350 for limiting the travel of the cylinder rod of the quick-advance and retreat gun cylinder 310, the positioning device 350 is disposed on the side wall of the chassis 100, a positioning adjustment rod 351 corresponding to the cylinder rod of the quick-advance cylinder 310 is disposed on the positioning device 350, the positioning adjustment rod 351 and the cylinder rod are positioned on the same horizontal line, and an adjustment handle 352 for adjusting the depth of the positioning adjustment rod 351 is disposed on the positioning device 350. A pointer 354 is provided on the positioning device 350 to indicate the screwing depth of the positioning adjustment rod 351.

As shown in fig. 8, the blade feeding positioner 500 includes:

the machine body 510, the said body 510 connects with chassis 100 through the body seat 511, one side of the said body 510 has upper and lower fixed guide rails 520;

an up-and-down moving slide plate 530, the up-and-down moving slide plate 530 being slidably connected to the up-and-down fixing rail 520;

the body 510 is provided with an up limit 521 and a down limit 522 for limiting the travel of the up-down moving slide 530.

Wherein, the up-down moving slide 530 is provided with a blade adsorption electromagnet 541 and a blade in-place detection electrode 542 for adsorbing the blade and detecting the position of the blade, respectively; the body seat 511 is provided with a feeding cylinder 550 for pushing the body 510 to move.

The working principle and the working process of the invention are as follows:

the cabinet 100 serves as a main frame structure of the entire product for setting and protecting other mechanisms. The indexing expansion steering mechanism 200 is used to position the workpieces 120 to be welded. The two welding gun profiling mechanisms 200 serve as setting mechanisms of the welding gun 600, and specifically control the welding gun 600 to weld the workpiece 120 to be welded. In order to cooperate with the two welding gun shape preventing mechanisms 200, two welding gun wire feeders 400 are provided above the machine case 100 to feed welding wires. The blade feeding and positioning machine 500 is used for precisely positioning the feeding of the blades.

In operation, the workpiece 120 to be welded is firstly mounted on the hollow expansion shaft 252 through the workpiece position positioning sleeve 252c, then the expansion cylinder 251 is started, and the expansion cylinder 251 locks the workpiece through the shaft sleeve pull rod 252b and the hollow taper sleeve 253. Thus, the workpiece is fixed and is convenient to process. If the workpiece is required to horizontally rotate according to the processing requirement, the rotary arm 222 is driven by the driving cylinder 221 to drive the rotary hollow shaft 223 to rotate. The rotation arm 222 has a hinge structure capable of converting the linear motion of the cylinder rod of the driving cylinder 221 into the rotary motion of the rotary hollow shaft 223. When rotated to a desired angle or position, the positioning pin 243 is pushed to cooperate with the base plate 230 by the welding position positioning cylinder 242 to perform position fixing, and the welding position positioner 241 is also set at a proper position to perform positioning. If the workpiece is required to vertically rotate, the driving motor unit 212 is matched with the driven gear 252a to drive the hollow expansion shaft 252 to rotate, so that the workpiece 120 to be welded is driven to rotate.

In the description of the present invention, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

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

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. An automatic welding machine for outer rotor fan blades, which is characterized by comprising:

the device comprises a case (100), wherein a guide rail (110) is arranged at the upper end inside the case (100);

the indexing expansion steering mechanism (200) is used for fixing a workpiece (120) to be welded, and the indexing expansion steering mechanism (200) is arranged in the case (100);

the two welding gun profiling mechanisms (300) are symmetrically arranged in the chassis (100), are both in sliding connection with the guide rail (110) through the sliding blocks (111), and are both positioned above the indexing expansion steering mechanism (200);

the two welding gun wire feeders (400) are symmetrically arranged at two sides of the upper end of the chassis (100), and the two welding gun wire feeders (400) are connected with welding guns (600) on the two welding gun profiling mechanisms (300) in a one-to-one correspondence manner through wire feeding pipes (410);

the blade feeding positioning machine (500), wherein the blade feeding positioning machine (500) is arranged on the chassis (100) and is positioned between the two welding gun wire feeders (400);

the indexing expansion steering mechanism (200) comprises:

a base box (210), wherein the base box (210) is fixed in the chassis (100), and a driving motor (212) is arranged on the base box (210);

the rotary mechanism comprises a driving air cylinder (221) and a rotary hollow shaft (223), the driving air cylinder (221) is arranged in the base box (210), a push rod of the driving air cylinder (221) is connected with the rotary hollow shaft (223) through a rotary arm (222), the rotary hollow shaft (223) penetrates through an upper cover plate (211) of the base box (210), and a rotary fixing outer sleeve (224) is sleeved outside the rotary hollow shaft (223);

the base plate (230), the base plate (230) is arranged at the upper end of the rotary hollow shaft (223), and a positioning hole is formed in the base plate (230);

the positioning mechanism comprises a positioner (241), a positioning cylinder (242) and a positioning pin (243), wherein the positioner (241) is arranged on the base box (210), the positioning cylinder (242) is arranged on the positioner (241), and the positioning pin (243) is vertically arranged and is connected with a push rod of the positioning cylinder (242) and inserted into or removed from the positioning hole;

the fixing mechanism is rotationally connected to the upper end of the base plate (230);

the fixing mechanism includes:

the hollow expansion shaft (252), the hollow expansion shaft (252) is connected with the base plate (230) through two bearing seats and is arranged in parallel with the base plate (230), a driven gear (252 a) is sleeved on the outer side of the hollow expansion shaft (252), and the driven gear (252 a) is connected with the output end of the driving motor (212);

the expansion cylinder (251), the expansion cylinder (251) is connected with one bearing seat through a cylinder connecting seat (251 a), a push rod of the expansion cylinder (251) is connected with a taper sleeve pull rod (252 b), and the taper sleeve pull rod (252 b) is coaxially arranged in the hollow expansion shaft (252) in a penetrating mode;

the hollow taper sleeve (253), the hollow taper sleeve (253) is arranged in one end of the hollow expansion shaft (252) far away from the expansion cylinder (251), and a fixed sleeve (252 c) for positioning a workpiece is arranged at one end of the hollow expansion shaft (252) close to the hollow taper sleeve (253);

the welding gun profiling mechanism (300) comprises:

the quick gun feeding and discharging cylinder (310), the quick gun feeding and discharging cylinder (310) is connected with the sliding block (111) through a cylinder rod connecting plate (311), and a cylinder sleeve of the quick gun feeding and discharging cylinder (310) is connected with the machine case (100) through a cylinder seat plate (312);

the transverse profiling mechanism is connected with the cylinder rod connecting plate (311);

and the upper and lower profiling mechanisms are perpendicular to a plane formed by the transverse profiling mechanisms and the longitudinal profiling mechanisms, and the welding gun (600) is arranged at the lower ends of the upper and lower profiling mechanisms.

2. The automatic welding machine for outer rotor fan blades as recited in claim 1, wherein said transverse profiling mechanism comprises:

a moving slide plate (321), wherein the moving slide plate (321) is connected with the cylinder rod connecting plate (311);

a transverse track template (322), wherein the transverse track template (322) is connected with the movable slide plate (321) through two connecting plates (321 a);

the first guide rods (323), two first guide rods (323) are arranged between the two connecting plates (321 a) side by side; a sliding frame (324) is arranged and is in sliding connection with the two first guide rods (323).

3. The automatic welding machine for outer rotor fan blades as claimed in claim 2, wherein said longitudinal profiling mechanism comprises:

the second guide rods (331), the two second guide rods (331) are arranged in the sliding frame (324) and are perpendicular to the first guide rods (323);

the cross slide block (332), the cross slide block (332) is sleeved on the second guide rod (331);

the longitudinal profiling spring (333) is sleeved on the second guide rod (331), one end of the longitudinal profiling spring (333) is contacted with the cross slide block (332), and the other end of the longitudinal profiling spring is contacted with the inner wall of the sliding frame (324).

4. The automatic welding machine for outer rotor fan blades according to claim 3, wherein the upper and lower profiling mechanisms comprise:

the two upper and lower adjusting lead screws (341) are connected with the cross slide block (332) in a sliding manner and are vertical to the horizontal plane;

the upper and lower adjusting three-axis seat (342), the upper and lower adjusting three-axis seat (342) is sleeved on the two upper and lower adjusting screw rods (341) and is positioned below the transverse track template (322);

an upper and lower profiling spring (343), wherein the upper and lower profiling spring (343) is sleeved on the upper and lower adjusting screw (341), one end of the upper and lower profiling spring (343) is contacted with the upper and lower adjusting three-axis seat (342), and the other end is contacted with the transverse track template (322);

an upper and lower profile modeling bearing (344), wherein the upper and lower profile modeling bearing (344) is arranged at the part of the upper end of the movable slide plate (321) where the upper and lower adjusting screw (341) is positioned;

and the curved surface profiling mold (345) is arranged on the movable sliding plate (321) and is positioned below the upper profiling bearing (344).

5. The automatic welding machine for outer rotor fan blades according to claim 4, wherein one side of the up-down adjusting three-axis seat (342) is connected with a gun lifting cylinder (610), the tail end of a cylinder rod of the gun lifting cylinder (610) is connected with an adjuster seat (621), and the welding gun (600) is arranged on the adjuster seat (621).

6. The automatic welding machine for outer rotor fan blades according to claim 4, wherein the welding gun profiling mechanism (300) further comprises a positioning device (350) for limiting the travel of a cylinder rod of the quick-speed gun feeding and discharging cylinder (310), the positioning device (350) is arranged on the side wall of the machine case (100), a positioning adjusting rod (351) corresponding to the cylinder rod of the quick-speed gun feeding and discharging cylinder (310) is arranged on the positioning device (350), the positioning adjusting rod (351) and the cylinder rod are positioned on the same horizontal line, and an adjusting handle (352) for adjusting the depth of the positioning adjusting rod (351) is arranged on the positioning device (350).

7. The automatic welding machine for outer rotor fan blades according to claim 1, wherein the blade feeding and positioning machine (500) comprises:

the machine comprises a machine body (510), wherein the machine body (510) is connected with a machine case (100) through a machine body seat (511), and an upper fixed guide rail (520) and a lower fixed guide rail (520) are arranged on one side of the machine body (510);

an up-and-down moving slide plate (530), wherein the up-and-down moving slide plate (530) is in sliding connection with the up-and-down fixed guide rail (520);

the machine body (510) is provided with an upward limit (521) and a downward limit (522) for limiting the travel of the up-and-down moving slide plate (530).