Fan blade welding device and using method thereof

Abstract

The invention discloses a fan blade welding device and a using method thereof.The fan blade welding device comprises a welding device body, a multi-range stabilizing mechanism is arranged at the top of the welding device body and comprises a connecting base, a buffer spring and a rubber plate, a fixing plate is fixedly connected to the top end of the connecting base, and the buffer spring is fixedly connected to the inner side of the fixing plate; one end of the buffer spring is fixedly connected with a supporting plate, and the inner side of the supporting plate is fixedly connected with a rubber plate. The using method of the device has the beneficial effects that a motor enables a limiting column to move in the sliding direction, a transmission rod is linked to drive a connecting base to be close to a fan blade body, a rubber plate is arranged on the inner side of the connecting base, and when the connecting base moves to a certain position, the rubber plate is flexibly attached to the outer surface of the fan blade body; and a buffer spring structure is arranged between the rubber plate and the connecting seat, the buffer spring deforms when the connecting seat applies pressure, the clamping force is buffered, the fan blade body is prevented from being damaged, and the adaptability and safety of the whole device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fan manufacturing, and in particular, to a fan blade welding device and a method for using the same. Background Art

[0002] As a common power device, fans are widely used in industrial production, environmental engineering, building ventilation and other fields. As an important part of the fan, the processing quality of the fan blade directly affects the overall performance and service life of the fan. In the existing technology, the manufacturing process of the fan blade usually includes forming, welding and post-processing, and the welding process is crucial for ensuring the strength and aerodynamic performance of the blade.

[0003] In the actual implementation process, there are still some problems: in the traditional fan blade welding process, a simple support frame or manual fixing method is usually adopted. Due to the complex structure and different weights of the fan blade body, and the relatively smooth surface of the fan blade body and easy deformation, it is difficult to achieve efficient and accurate fixing simply by mechanical clamping or manual operation. Specifically, the existing technology has the following defects: First, the clamping structure is too rigid, which is easy to cause scratches, indentations or local deformation on the blade surface during the clamping process, affecting the welding quality and subsequent aerodynamic performance; Second, there is a lack of real-time clamping force detection and adaptive adjustment function, resulting in difficult precise control of the clamping force, and there is a risk of blade displacement during the welding process due to insufficient clamping, or material damage due to excessive clamping; Third, the positioning efficiency during the welding preparation process is low, requiring multiple manual adjustments, the overall operation is cumbersome, the production efficiency is low, and the consistency and stability are poor. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the above background art, and then propose a fan blade welding device and a method for using the same. The device disclosed in the present invention drives the transmission plate to rotate through the output end of the motor. When the transmission plate rotates, the chute structure exerts a squeezing effect on the limit post, forcing the limit post to move along the sliding direction and driving the transmission rod to move synchronously. The transmission rod drives the connecting seat to approach the fan blade body. A rubber plate is arranged inside the connecting seat. When the connecting seat moves to a certain position, the rubber plate is flexibly attached to the outer surface of the fan blade body. A buffer spring structure is arranged between the rubber plate and the connecting seat. The buffer spring deforms when excessive pressure is applied to the connecting seat, buffering the clamping force and preventing damage to the fan blade body, and improving the adaptability and safety of the overall device.

[0005] The technical solution adopted by the present invention to solve its technical problems is: A welding device for a fan blade, comprising a welding device body, a multi-range stabilizing mechanism is provided at the top of the welding device body, the multi-range stabilizing mechanism includes a connecting seat, a buffer spring and a rubber plate, a fixing plate is fixedly connected to the top end of the connecting seat, a buffer spring is fixedly connected to the inner side of the fixing plate, one end of the buffer spring is fixedly connected to a support plate, and a rubber plate is fixedly connected to the inner side of the support plate.

[0006] Preferably, a welding frame is rotatably connected to the inner wall of the welding device body, a stabilizing bottom plate is fixedly connected to the inner wall of the welding frame, and a motor is fixedly connected to the top end of the stabilizing bottom plate.

[0007] Preferably, a guide rail is fixedly connected to the middle of the top end of the stabilizing bottom plate, a transmission rod is slidably connected to the inner wall of the guide rail, and a limiting post is rotatably connected to the top end of the transmission rod.

[0008] Preferably, a transmission plate is rotatably connected to the top end of the guide rail, a chute is provided at the top end of the transmission plate, and the top of the limiting post is slidably connected to the inner wall of the chute.

[0009] Preferably, the output end of the motor penetrates through the guide rail and is fixedly connected to the bottom end of the transmission plate, and the bottom end of the connecting seat is slidably connected to the top end of the welding frame.

[0010] Preferably, one end of the connecting seat is fixedly connected to a connecting rod, and one end of the connecting rod is fixedly connected to one end of the transmission rod.

[0011] Preferably, a micro air pump is fixedly connected to the inner side of the fixing plate, an output end of the micro air pump is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a corrugated pipe, one end of the corrugated pipe is fixedly connected to a suction cup, and a fan blade body is placed on the top end of the welding frame.

[0012] Preferably, the inner side of the rubber plate is attached to the outer side of the fan blade body, and the bottom end of the suction cup is attached to the top end of the fan blade body.

[0013] Preferably, a pressure sensor switch is connected to the inner side of the rubber plate, the pressure sensor switch is electrically connected to the motor, and the motor is electrically connected to the micro air pump.

[0014] A method for using a welding device for a fan blade, comprising the following steps: S1: Installation and adjustment, place the fan blade body on the top end of the welding frame, drive the buffer spring, rubber plate and suction cup to fit the outer surface of the fan blade body through the connecting seat and the fixing plate, and generate negative pressure through the operation of the micro air pump, and the suction cup adsorbs and fixes the fan blade body; S2: Limiting and pre-tightening, start the motor, drive the transmission plate and the limiting column to slide along the guide rail, drive the connecting seat through the connecting rod to further clamp the fan blade body, and at the same time, the rubber plate generates a moderate pre-tightening force through the buffer spring to make the fan blade body evenly stressed; S3: Automatic detection and preparation, the fixing state is detected by the pressure switch set on the inner side of the rubber plate. When the pressure switch detects that the fan blade body is firmly attached, the motor and micro vacuum pump are automatically triggered to enter the welding preparation state; S4: Execute welding operation. According to the process requirements, operate the welding head to perform welding operations. During the welding process, the multi-range stabilizing mechanism continuously keeps the fan blade body in a fixed state. After the welding is completed, turn off the welding device, release the negative pressure of the suction cup, and remove the welded fan blade body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In order to achieve effective clamping and fixing of the fan blade body, after the user starts the motor, the motor drives the transmission plate to rotate, driving the slide groove structure to act on the limit column, causing the limit column to move along the sliding direction and linking the transmission rod to move synchronously, thereby pushing the connecting seat closer to the fan blade body. The rubber plate on the inside of the connecting seat flexibly fits the outer surface of the fan blade to prevent damage caused by excessive clamping force. A buffer spring structure is set between the rubber plate and the connecting seat. The spring can deform when excessive pressure is applied to the connecting seat, buffering the clamping force, thereby protecting the fan blade body from damage. This design improves the adaptability and safety of the overall device.

[0016] 2. As the connecting seat moves closer to the fan blade body, when the clamping force reaches the preset safety threshold, the surface of the fan blade body will squeeze the pressure switch installed on the inside of the rubber plate. After the pressure switch is triggered, the motor receives a stop signal and stops running immediately. This mechanism prevents excessive clamping of the blade body, avoids damage or position displacement caused by excessive clamping, and ensures the safety of the device operation and the integrity of the fan blade body.

[0017] 3. After the motor stops running, the micro vacuum pump is started in conjunction to form a negative pressure environment. The user manually presses the bellows to make the suction cup firmly adsorbed to the upper surface of the fan blade body. Through negative pressure adsorption, the suction cup additionally fixes the blade part of the fan blade body, effectively preventing displacement or angle deviation caused by factors such as welding thermal deformation, vibration, and welding gun impact during welding, thereby ensuring the stability of the fan blade body and the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the bottom of the present invention; Figure 3 Schematic diagram of the structure of the welding frame part of the present invention; Figure 4 of the present invention Figure 3 Enlarged view at A in; Figure 5 of the present invention Figure 3 Enlarged view at B in; Figure 6 Schematic diagram of the structure of the stable bottom plate part of the present invention; Figure 7 Schematic diagram of the working process of the present invention.

[0019] Wherein: 1. Welding device body; 2. Fan blade body of the fan; 3. Welding frame; 4. Multi-range stabilizing mechanism; 401. Stable bottom plate; 402. Connecting seat; 403. Fixed plate; 404. Connecting rod; 405. Micro air pump; 406. Connecting pipe; 407. Bellows; 408. Suction cup; 409. Pressure-sensitive switch; 410. Rubber plate; 411. Support plate; 412. Buffer spring; 413. Guide rail; 414. Transmission plate; 415. Limit post; 416. Chute; 417. Transmission rod; 418. Motor. Detailed implementation manners

[0020] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0021] As Figures 1 - 7 shown, a fan blade welding device of the present invention and its usage method include a welding device body 1. A multi-range stabilizing mechanism 4 is provided at the top of the welding device body 1. The multi-range stabilizing mechanism 4 includes a connecting seat 402, a buffer spring 412, and a rubber plate 410. The top end of the connecting seat 402 is fixedly connected to a fixed plate 403. The inner side of the fixed plate 403 is fixedly connected to a buffer spring 412. One end of the buffer spring 412 is fixedly connected to a support plate 411. The inner side of the support plate 411 is fixedly connected to a rubber plate 410.

[0022] As Figures 3 - 6 shown, the inner wall of the welding device body 1 is rotatably connected to a welding frame 3. The inner wall of the welding frame 3 is fixedly connected to a stable bottom plate 401. The top end of the stable bottom plate 401 is fixedly connected to a motor 418. In the actual implementation process, the welding frame 3 is arranged on the inner wall of the welding device body 1 in a rotatable connection manner, so that the welding frame 3 can be flexibly rotated and adjusted according to different sizes or welding angle requirements of the fan blade body 2, effectively improving the adaptability.

[0023] At the middle of the top end of the stable base plate 401, a guide rail 413 is fixedly connected. Inside the inner wall of the guide rail 413, a transmission rod 417 is slidably connected. At the top end of the transmission rod 417, a limit post 415 is rotatably connected. During the actual implementation process, the guide rail 413 is installed on the stable base plate 401 and is arranged at the middle position, which helps to evenly distribute the force during the operation process, prevent the device from being eccentrically loaded, and the transmission rod 417 slides inside the inner wall of the guide rail 413, which can efficiently and smoothly convert the rotational motion of the motor 418 into a linear displacement.

[0024] At the top end of the guide rail 413, a transmission plate 414 is rotatably connected. At the top end of the transmission plate 414, a chute 416 is provided. At the top of the limit post 415, it is slidably connected to the inner wall of the chute 416. During the actual implementation process, the transmission plate 414 is rotatably connected to the top end of the guide rail 413 and guides the sliding of the limit post 415 through the chute 416, so that the limit post 415 can move controllably along a predetermined trajectory. This structure realizes the organic combination of power distribution and limit guidance.

[0025] The output end of the motor 418 penetrates through the guide rail 413 and is fixedly connected to the bottom end of the transmission plate 414. The bottom end of the connecting seat 402 is slidably connected to the top end of the welding frame 3. During the actual implementation process, the output shaft of the motor 418 directly penetrates through the guide rail 413 and is fixedly connected to the bottom end of the transmission plate 414, reducing the intermediate transmission link, improving the directness and response speed of power transmission. At the same time, the sliding connection design between the bottom end of the connecting seat 402 and the top end of the welding frame 3 enables the connecting seat 402 to have a certain guiding and buffering ability when moving.

[0026] One end of the connecting seat 402 is fixedly connected to a connecting rod 404. One end of the connecting rod 404 is fixedly connected to one end of the transmission rod 417. During the actual implementation process, when the transmission rod 417 moves, it can directly drive the connecting seat 402 to act synchronously, making the clamping action faster and more accurate, avoiding the problem of intermediate transmission lag, improving the clamping stability and response speed, helping to shorten the welding preparation time, and improving the overall production efficiency.

[0027] On the inner side of the fixed plate 403, a micro air pump 405 is fixedly connected. The output end of the micro air pump 405 is fixedly connected with a connecting pipe 406. One end of the connecting pipe 406 is fixedly connected with a corrugated pipe 407. One end of the corrugated pipe 407 is fixedly connected with a suction cup 408. The top of the welding frame 3 is provided with the fan blade body 2. In the actual implementation process, the micro air pump 405 is installed on the inner side of the fixed plate 403, effectively utilizing the space layout and reducing the occupied volume of the overall equipment. The negative pressure is transmitted to the suction cup 408 through the connecting pipe 406 and the corrugated pipe 407, enabling the suction cup 408 to firmly adsorb on the fan blade body 2. The corrugated pipe 407 has certain elasticity and flexibility, which can adapt to the fine adjustment requirements of different positions and angles, improving the stability and flexibility of the adsorption of the suction cup 408, further enhancing the fixing effect of the fan blade body 2, and ensuring that it does not shift due to vibration during the welding operation.

[0028] The inner side of the rubber plate 410 is attached to the outer side of the fan blade body 2, and the bottom end of the suction cup 408 is attached to the top end of the fan blade body 2. In the actual implementation process, by placing the fan blade body 2 on the top of the welding frame 3, the initial docking of the body and the clamping mechanism is realized. The inner side of the rubber plate 410 is flexibly attached to the outer side of the fan blade body 2, which can buffer the local pressure concentration caused by uneven clamping force and prevent damage to the surface of the fan blade body 2. The bottom end of the suction cup 408 is closely attached to the top of the fan blade, and is firmly adsorbed through negative pressure, realizing double fixation of clamping and adsorption on the fan blade body 2 from the upper and lower directions, greatly improving the positioning stability and ensuring the high-precision progress of the welding operation.

[0029] The inner side of the rubber plate 410 is connected with a pressure sensor switch 409. The pressure sensor switch 409 is electrically connected to the motor 418, and the motor 418 is electrically connected to the micro air pump 405. In the actual implementation process, the pressure sensor switch 409 arranged on the inner side of the rubber plate 410 can monitor the clamping force in real time. When the clamping reaches the preset standard, the pressure sensor switch 409 is immediately triggered to send an electrical signal to control the motor 418 to stop working, preventing damage to the equipment or deformation of the fan blade body 2 caused by excessive clamping. At the same time, the motor 418 controls the synchronous start and stop of the micro air pump 405, realizing the automatic switching of the clamping and adsorption actions and improving the degree of automation.

[0030] As Figure 7 shown, a method for using a fan blade welding device includes the following steps: S1: Installation and adjustment. Place the fan blade body 2 on the top of the welding frame 3. Drive the buffer spring 412, the rubber plate 410 and the suction cup 408 to fit with the outer surface of the fan blade body 2 through the connecting seat 402 and the fixed plate 403. Generate negative pressure through the operation of the micro air pump 405, and the suction cup 408 adsorbs and fixes the fan blade body 2. S2: Limiting and pre-tightening. Start the motor 418 to drive the transmission plate 414 and the limiting column 415 to slide along the guide rail 413, and drive the connecting seat 402 to further clamp the fan blade body 2 through the connecting rod 404. At the same time, the rubber plate 410 generates an appropriate pre-tightening force through the buffer spring 412 to make the force on the fan blade body 2 uniform. S3: Detect the fixed state through the pressure-sensitive switch 409 arranged inside the rubber plate 410. When the pressure-sensitive switch 409 detects that the fan blade body 2 is stably attached, the motor 418 and the micro air pump 405 are automatically triggered to enter the welding preparation state. S4: Perform the welding operation. According to the process requirements, operate the welding head for welding. During the welding process, the multi-range stabilizing mechanism 4 continuously maintains the fixed state of the fan blade body 2. After welding is completed, turn off the welding device, release the negative pressure of the suction cup 408, and remove the welded fan blade body 2. In the actual implementation process, during the entire welding process, the fan blade body 2 remains highly stable, avoiding offsets caused by external forces such as welding thermal deformation and welding torch impact, improving the weld forming quality, and ensuring that the mechanical properties and appearance quality of the welded joint both meet the standards.

[0031] Working principle: When the user needs to weld the fan blade body 2, first place the fan blade body 2 stably on the welding rack 3 so that it is located in the preset working area at the center of the device. To effectively clamp and fix the fan blade body 2, the user then starts the motor 418. The motor 418 drives the drive plate 414 to rotate through its output end. With the rotational movement of the drive plate 414, the chute 416 structure provided on the drive plate 414 exerts a squeezing effect on the limit post 415, forcing the limit post 415 to move along the sliding direction. During the sliding process of the limit post 415, it drives the transmission rod 417 to move synchronously. The movement of the transmission rod 417 further drives the connecting seat 402 connected to it to move closer to the fan blade body 2. A rubber plate 410 is provided inside the connecting seat 402. When the connecting seat 402 moves to a certain position, the rubber plate 410 can achieve flexible fitting with the outer surface of the fan blade body 2. To prevent damage to the outer wall of the fan blade due to excessive clamping force, a buffer spring 412 structure is provided between the rubber plate 410 and the connecting seat 402. The buffer spring 412 can generate a certain deformation when the connecting seat 402 applies excessive pressure, thereby buffering the clamping force and protecting the fan blade body 2 from damage, further improving the adaptability and safety of the overall device. As the connecting seat 402 continues to move closer to the fan blade body 2, when the clamping force reaches the preset safety threshold, the surface of the fan blade body 2 will inwardly press the pressure sensor switch 409 installed inside the rubber plate 410. After the pressure sensor switch 409 is triggered, it sends a stop signal to the motor 418. After receiving this signal, the motor 418 immediately stops operating to prevent damage or position deviation caused by over-clamping the fan blade body. After the motor 418 stops operating, the motor 418 can simultaneously drive and start the micro air pump 405. When the micro air pump 405 starts to work, a negative pressure environment is formed, and in cooperation with the user's manual pressing operation on the corrugated pipe 407, the suction cup 408 connected to the bottom end of the corrugated pipe 407 can achieve firm adsorption with the upper surface of the fan blade body 2. Since the suction cup 408 adsorbs through negative pressure, it can effectively provide additional fixation for the blade part of the fan blade body 2, further preventing displacement or angular deviation of the fan blade body 2 during the welding process due to factors such as welding thermal deformation, vibration, and welding torch impact.

[0032] In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for describing the present invention rather than requiring the present invention to be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The "connected" and "connected" in the present invention should be understood in a broad sense. For example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] The above is the preferred operation mode of the present invention. The description of the specific operation mode is only for better understanding the idea of the present invention. For those of ordinary skill in the art, several improvements or equivalent replacements can also be made according to the principle of the present invention, and these improvements or equivalent replacements are also regarded as falling within the protection scope of the present invention.

Claims

1. A fan blade welding device, comprising a welding device body (1), characterized in that: A multi-range stabilizing mechanism (4) is provided at the top of the welding device body (1). The multi-range stabilizing mechanism (4) includes a connecting seat (402), a buffer spring (412), and a rubber plate (410). The top of the connecting seat (402) is fixedly connected to a fixing plate (403). The buffer spring (412) is fixedly connected to the inner side of the fixing plate (403). One end of the buffer spring (412) is fixedly connected to a support plate (411). The rubber plate (410) is fixedly connected to the inner side of the support plate (411).

2. The welding device for a fan blade according to claim 1, wherein: A welding frame (3) is rotatably connected to the inner wall of the welding device body (1). A stabilizing base plate (401) is fixedly connected to the inner wall of the welding frame (3). A motor (418) is fixedly connected to the top of the stabilizing base plate (401).

3. The fan blade welding device according to claim 2, characterized in that: A guide rail (413) is fixedly connected to the middle of the top of the stabilizing base plate (401). A transmission rod (417) is slidably connected to the inner wall of the guide rail (413). The top of the transmission rod (417) is rotatably connected to a limiting post (415).

4. A fan blade welding device according to claim 3, characterized in that: A transmission plate (414) is rotatably connected to the top of the guide rail (413). A chute (416) is provided at the top of the transmission plate (414). The top of the limiting post (415) is slidably connected to the inner wall of the chute (416).

5. The welding device for a fan blade according to claim 2, characterized in that: The output end of the motor (418) passes through the guide rail (413) and is fixedly connected to the bottom end of the transmission plate (414). The bottom end of the connecting seat (402) is slidably connected to the top of the welding frame (3).

6. The welding device for a fan blade according to claim 1, characterized in that: One end of the connecting seat (402) is fixedly connected to a connecting rod (404). One end of the connecting rod (404) is fixedly connected to one end of the transmission rod (417).

7. A fan blade welding device according to claim 2, characterized in that: A micro air pump (405) is fixedly connected to the inner side of the fixing plate (403). The output end of the micro air pump (405) is fixedly connected to a connecting pipe (406). One end of the connecting pipe (406) is fixedly connected to a corrugated pipe (407). One end of the corrugated pipe (407) is fixedly connected to a suction cup (408). A fan blade body (2) is placed on the top of the welding frame (3).

8. The fan blade welding device according to claim 7, characterized in that: The inner side of the rubber plate (410) is attached to the outer side of the fan blade body (2). The bottom end of the suction cup (408) is attached to the top end of the fan blade body (2).

9. The welding device for a fan blade according to claim 1, characterized in that: A pressure sensor switch (409) is connected to the inner side of the rubber plate (410). The pressure sensor switch (409) is electrically connected to the motor (418). The motor (418) is electrically connected to the micro air pump (405).

10. A method for using a welding device for a fan blade, characterized in that: For the welding device according to any one of claims 1-9, the following steps are included: S1: Installation and adjustment. Place the fan blade body (2) on the top of the welding frame (3). Drive the buffer spring (412), rubber plate (410), and suction cup (408) to fit the outer surface of the fan blade body (2) through the connecting seat (402) and fixing plate (403). Generate negative pressure by the operation of the micro air pump (405), and the suction cup (408) adsorbs and fixes the fan blade body (2). S2: Limiting and pre-tightening, starting the motor (418), driving the transmission plate (414) and the limiting column (415) to slide along the guide rail (413), driving the connecting seat (402) through the connecting rod (404) to further clamp the fan blade body (2), and at the same time, the rubber plate (410) generates a moderate pre-tightening force through the buffer spring (412), so that the fan blade body (2) is evenly stressed; S3: Detecting the fixing state through a pressure-sensitive switch (409) disposed on the inner side of the rubber plate (410); when the pressure-sensitive switch (409) detects that the fan blade body (2) is in stable contact, the motor (418) and the micro vacuum pump (405) are automatically triggered to enter a welding preparation state; S4: Execute welding operation. According to the process requirements, operate the welding head to perform welding operation. During the welding process, the multi-range stabilizing mechanism (4) continuously maintains the fixed state of the fan blade body (2). After the welding is completed, turn off the welding device, release the negative pressure of the suction cup (408), and remove the welded fan blade body (2).

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