A positioning structure for the processing of the housing of an axial flow fan

Abstract

The present invention provides a positioning structure for the processing of an axial flow fan housing, belonging to the technical field of axial flow fan processing. It includes a mounting base, on both sides of which symmetrically installed are evenly distributed cylinders. The end of each cylinder is fixedly connected to a first clamping plate. A second clamping plate is arranged between adjacent first clamping plates. An activity frame is sleeved outside the second clamping plate. Buffer rollers are symmetrically installed in the activity frame, and evenly distributed telescopic columns are sleeved on the activity frame. By setting the first clamping plate, the second clamping plate, the buffer rollers and the buffer assembly, the present invention can effectively buffer and protect the axial flow fan housing during the process of clamping and positioning the axial flow fan housing, can avoid damage to the axial flow fan housing during the positioning process, and can also form a state of wrapped clamping to ensure the stability after clamping and positioning, providing convenience for the processing operation of the axial flow fan housing.

Description

Technical Field

[0001] The present invention relates to the technical field of axial flow fan processing, and particularly relates to a positioning structure for processing the housing of an axial flow fan. Background Art

[0002] During the processing of the axial flow fan housing, precise positioning and clamping are required to ensure the processing accuracy and stability. During the processing, key dimensions such as the roundness, coaxiality, and welding accuracy of the axial flow fan housing have relatively high requirements to ensure smooth air flow, low noise, and high efficiency during the operation of the fan.

[0003] However, since the housing structure is mostly a thin-walled part with low rigidity, it is prone to deformation or surface damage due to excessive clamping force during traditional mechanical clamping, which affects the final assembly accuracy and service life. Traditional clamping and positioning structures usually use rigid jigs, such as mechanical chucks, hydraulic clamping devices, etc. Although they can provide a stable fixing effect, they are prone to surface damage of the housing due to rigid contact during clamping, especially for the fan housing with thin walls or high surface accuracy requirements. Excessive clamping force may cause deformation or scratches, affecting the quality of the final product. In addition, when processing different positions, it is usually necessary to loosen the jig and manually adjust the angle of the housing, or rely on an additional rotation drive mechanism, which not only increases the operation complexity but also reduces the processing efficiency. Existing rotation positioning structures are often complex in structure and difficult to achieve a good balance between the clamping and rotation functions, resulting in inflexible processing. Therefore, the present application provides a positioning structure for processing the axial flow fan housing to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a positioning structure for processing the axial flow fan housing to solve the problems that the existing positioning structure is prone to damage the axial flow fan housing and it is difficult to achieve a good balance between the clamping and rotation functions during the processing.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A positioning structure for processing the housing of an axial flow fan, including a mounting base, on both sides of which are symmetrically installed evenly distributed cylinders. The ends of the cylinders are fixedly connected with first clamping plates. A second clamping plate is arranged between adjacent first clamping plates. An activity frame is sleeved outside the second clamping plate. Buffer rollers are symmetrically installed in the activity frame, and evenly distributed telescopic columns are sleeved on the activity frame; a buffer assembly for buffering when the first clamping plate and the second clamping plate perform clamping work, and the buffer assembly is connected with the first clamping plate; a reinforcement assembly for reinforcing when the first clamping plate and the second clamping plate perform clamping work, and the reinforcement assembly is connected with the telescopic columns.

[0007] Optionally, evenly distributed electric telescopic rods are fixedly connected to the mounting base, and a lifting platform is fixedly connected to the top ends of the electric telescopic rods. The lifting platform is located below the cylinder.

[0008] Optionally, an elastic sheet is fixedly connected between the first clamping plate and the second clamping plate. The elastic sheet is wavy, and connecting seats located outside the elastic sheet are fixedly connected to both the first clamping plate and the second clamping plate.

[0009] Optionally, a connecting rod is sleeved between adjacent connecting seats. Both ends of the connecting rod are sleeved in the connecting seats, and the connecting rod is movably connected to the connecting seats through a rotating shaft.

[0010] Optionally, the cross-section of the movable frame is U-shaped. The telescopic columns are distributed at the edges of the opening of the movable frame. A socket is formed on the second clamping plate, and the movable frame is sleeved in the socket. A uniformly distributed first spring is fixedly connected between the movable frame and the second clamping plate.

[0011] Optionally, a servo motor is fixedly connected in the movable frame between the buffer rollers. The buffer rollers are movably connected to the movable frame through bearings, and the drive shaft of the servo motor is connected to the buffer rollers through a synchronous pulley and a synchronous belt.

[0012] Optionally, an avoidance opening adapted to the sizes of the servo motor, the synchronous pulley and the synchronous belt is formed on the second clamping plate, and a positioning groove adapted to the outer shape of the buffer roller is formed on the second clamping plate.

[0013] Optionally, the buffer assembly includes a buffer pad fixedly connected to the outside of the first clamping plate. The cross-section of the buffer pad is trapezoidal, and a weakening groove is formed on the inner side wall of the buffer pad. A first support frame located inside the buffer pad is fixedly connected to the outside of the first clamping plate.

[0014] Optionally, the reinforcement assembly includes a pressing head and a pressing plate fixedly connected to both ends of the telescopic column. The pressing head is located inside the movable frame, and a second spring is fixedly connected between the pressing head and the inner side wall of the movable frame. The pressing plate is located outside the movable frame.

[0015] Optionally, a limiting frame located between the pressing heads is fixedly connected to the inner side of the movable frame. Extrusion plates are symmetrically installed above and below the outside of the limiting frame. An extrusion surface is arranged on the outside of the extrusion plates. A pressure-receiving surface adapted to the shape of the extrusion surface is formed on the outside of the pressing heads. A pressing support plate is fixedly connected to one side of the extrusion plate away from the extrusion surface. A second support frame for supporting the pressing support plate is fixedly connected to the inner side of the limiting frame.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by setting the first clamping plate, the second clamping plate, the buffer roller and the buffer assembly, during the process of clamping and positioning the axial flow fan housing, the axial flow fan housing can be effectively buffered and protected, the damage to the axial flow fan housing caused during the positioning process can be avoided, and a wrapped clamping state can be formed to ensure the stability after clamping and positioning, providing convenience for the processing operation of the axial flow fan housing.

[0018] By setting the second clamping plate, the movable frame and the buffer roller, after the positioning structure realizes clamping and positioning, the clamping state of the axial flow fan housing can be maintained by a small-range contraction of the cylinder, but the buffer roller is unlocked, so that the buffer roller can be driven by the servo motor to rotate and drive the axial flow fan housing to rotate, so as to change the clamping position of the axial flow fan housing and make the axial flow fan housing flexibly rotate and adjust according to the needs of the processing process.

[0019] By setting the second clamping plate, the movable frame and the reinforcement assembly, while the positioning structure realizes the clamping and positioning of the axial flow fan housing, the relative displacement between the second clamping plate and the movable frame also drives the reinforcement assembly to work, forming a pressing limit on the flange edge of the axial flow fan housing and strengthening the working effect of the first clamping plate, the second clamping plate and the buffer roller, thereby further enhancing the clamping stability of the entire positioning structure for the axial flow fan housing.

[0020] By setting the limiting frame, the extrusion plate and the second support frame in the reinforcement assembly, while the reinforcement assembly is performing the pressing limit work on the flange edge of the axial flow fan housing, the extrusion force of the reinforcement assembly on the flange edge can also be controlled by the deformation of the extrusion plate and the second support frame, avoiding excessive extrusion of the flange edge by the reinforcement assembly and causing damage to the axial flow fan housing, echoing the function of the buffer assembly and improving the technical solution of the entire positioning structure. Description of the Drawings

[0021] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a positioning structure for the processing of an axial flow fan housing;

[0023] Figure 2 It is a first-perspective structural schematic diagram of a positioning structure for the processing of an axial flow fan housing;

[0024] Figure 3 It is a second-perspective structural schematic diagram of a positioning structure for the processing of an axial flow fan housing;

[0025] Figure 4 It is a schematic diagram of the cooperation structure of a cylinder, a first clamping plate and a second clamping plate;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of a first clamping plate and a second clamping plate;

[0027] Figure 6 It is Figure 5 The enlarged structural schematic diagram at position A in

[0028] Figure 7 It is Figure 5 The enlarged structural schematic diagram at position B in

[0029] Figure 8 It is a three-dimensional structural schematic diagram of a movable frame;

[0030] Figure 9 It is a three-dimensional structural schematic diagram of a pressing head and a pressing plate;

[0031] Figure 10 It is a schematic diagram of the cooperation structure of a limiting frame and a pressing head.

[0032] Reference numerals:

[0033] 1. Mounting base; 2. Electric telescopic rod; 3. Lifting table; 4. Cylinder; 5. First clamping plate; 6. Second clamping plate; 7. Movable frame; 8. Buffer roller; 9. Buffer pad; 10. Elastic sheet; 11. Telescopic column; 12. Limiting frame; 13. Socket; 14. Avoidance opening; 15. Positioning groove; 16. Weakening groove; 17. First support frame; 18. Connecting seat; 19. Connecting rod; 20. Rotating shaft; 21. Servo motor; 22. Synchronous pulley; 23. Synchronous belt; 24. First spring; 25. Pressing head; 26. Pressing plate; 27. Second spring; 28. Compressed surface; 29. Extrusion plate; 30. Extrusion surface; 31. Second support frame; 32. Pressing support plate.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structures, devices, and environments. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0035] The following will describe in detail a positioning structure for the processing of an axial flow fan housing provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0036] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0037] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that are not necessarily explicitly described.

[0038] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0039] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be interpreted accordingly.

[0040] As Figures 1 to 10 shown, an embodiment of the present invention provides a positioning structure for the processing of an axial flow fan housing, including a mounting base 1. Cylinders 4 are symmetrically and uniformly mounted on both sides of the mounting base 1. Electric telescopic rods 2 are fixedly connected to the mounting base 1 in a uniform distribution. The top ends of the electric telescopic rods 2 are fixedly connected to a lifting platform 3. The lifting platform 3 is located below the cylinders 4. The lifting platform 3 is used to place the housing of the axial flow fan to be processed. When the electric telescopic rods 2 work, they can drive the lifting platform 3 to lift through their driving rods, thereby changing the height of the axial flow fan housing between the cylinders 4, facilitating the correspondence between the cylinders 4 and the middle position of the axial flow fan housing, so as to facilitate the subsequent displacement work of the cylinders 4 driving other mechanisms to clamp and position the axial flow fan housing on the lifting platform 3, ensuring the accuracy of its processing position.

[0041] A first clamping plate 5 is fixedly connected to the end of the cylinder 4. A second clamping plate 6 is arranged between adjacent first clamping plates 5. A movable frame 7 is sleeved outside the second clamping plate 6. Buffer rollers 8 are symmetrically mounted in the movable frame 7, and telescopic columns 11 are uniformly sleeved on the movable frame 7. The first clamping plate 5 and the second clamping plate 6 are the main structures for clamping and positioning the axial flow fan housing. The displacement of the first clamping plate 5 is driven by the work of the cylinder 4, driving the second clamping plate 6 to approach the outside of the axial flow fan housing. The cylinder 4, the first clamping plate 5 and the second clamping plate 6 cooperate to form the clamping and positioning of the axial flow fan housing, determining the processing position of the axial flow fan housing. When the second clamping plate 6 follows the first clamping plate 5 to clamp and position the axial flow fan housing, the movable frame 7 follows the second clamping plate 6 to generate displacement, and the edge of the buffer roller 8 in the movable frame 7 is outside the movable frame 7, which can form a barrier between the second clamping plate 6 and the movable frame 7 and the axial flow fan housing, replacing the second clamping plate 6 and the movable frame 7 to clamp and position the axial flow fan housing;

[0042] A buffer component is used for buffering during the clamping operation of the first clamping plate 5 and the second clamping plate 6. The buffer component is connected to the first clamping plate 5. The setting of the buffer component can prevent the first clamping plate 5 from making rigid contact with the outside of the axial flow fan housing during the clamping and positioning process, thereby damaging the axial flow fan housing. A reinforcement component is used for reinforcing during the clamping operation of the first clamping plate 5 and the second clamping plate 6. The reinforcement component is connected to the telescopic column 11 and can be activated when the positioning structure as a whole contacts the outside of the axial flow fan housing and generates pressure, forming a pressing limit at the flange edge of the axial flow fan housing, thereby increasing the contact points between the positioning structure and the axial flow fan housing and dispersing the stress of each part of the axial flow fan housing in the clamped and positioned state, so as to ensure the stability of the axial flow fan housing after being clamped and positioned on the premise of avoiding damage to the axial flow fan housing.

[0043] In this embodiment, as Figures 1 to 7As shown, an elastic sheet 10 is fixedly connected between the first clamping plate 5 and the second clamping plate 6. The elastic sheet 10 is wavy, and the thickness value of the elastic sheet 10 is smaller than the thickness values of the first clamping plate 5 and the second clamping plate 6. With its wavy structure, it has good deformation ability and can deform under the action of external force, so that the first clamping plate 5 and the second clamping plate 6 can offset and move relative to each other, and are adapted to the external shape of the axial flow fan housing during the clamping and positioning process. Connecting seats 18 are fixedly connected to both the first clamping plate 5 and the second clamping plate 6 on the outside of the elastic sheet 10. A connecting rod 19 is sleeved between adjacent connecting seats 18. Both ends of the connecting rod 19 are sleeved in the connecting seats 18, and the connecting rod 19 is movably connected to the connecting seat 18 through a rotating shaft 20. When the cylinder 4 works, it can drive the first clamping plate 5 and the second clamping plate 6 to clamp and position the outside of the axial flow fan housing. The first clamping plate 5 and the second clamping plate 6 can generate an offset, so as to form a wrap around the outside of the axial flow fan housing, thereby generating more clamping points and ensuring the clamping and positioning effect. The associated connection between the connecting seat 18, the connecting rod 19 and the rotating shaft 20 can form a range limit for the relative displacement of the first clamping plate 5 and the second clamping plate 6. During the process that the first clamping plate 5 and the second clamping plate 6 are driven by the cylinder 4 to perform the clamping and positioning operation and generate an offset, the connecting rod 19 also deflects correspondingly with the connecting seat 18 to adapt to the offset of the first clamping plate 5 and the second clamping plate 6, but it is not much deformed compared with the elastic sheet 10. During the deflection process of the connecting seat 18 and the connecting rod 19, no deformation will occur, so as to effectively limit the deflection range of the first clamping plate 5 and the second clamping plate 6, and also enable the first clamping plate 5 to effectively drive the second clamping plate 6 to approach the outside of the axial flow fan housing under the thrust of the cylinder 4. Then, after the buffer roller 8 is attached to the outside of the axial flow fan housing, a corresponding extrusion force can also be generated to form the clamping and positioning of the axial flow fan housing. After the processing of the axial flow fan housing is completed, when the cylinder 4 drives the first clamping plate 5 and the second clamping plate 6 away from the axial flow fan housing, the elastic sheet 10 can drive the relative positions of the first clamping plate 5 and the second clamping plate 6 to return to the initial state under the action of its own elastic force.

[0044] In this embodiment, as Figures 2 to 8As shown, the cross-section of the movable frame 7 is U-shaped. The telescopic columns 11 are distributed at the edges of the opening of the movable frame 7. A socket 13 is provided on the second clamping plate 6. The movable frame 7 is sleeved in the socket 13, and a uniformly distributed first spring 24 is fixedly connected between the movable frame 7 and the second clamping plate 6. The movable frame 7 is sleeved outside the second clamping plate 6 through the socket 13 and is connected to the movable frame 7 through the first spring 24. When the movable frame 7 is not affected by external forces, the first spring 24 is in a contracted state. After the buffer roller 8 in the movable frame 7 comes into contact with the outside of the axial flow fan housing, the extrusion force from the axial flow fan housing received by the buffer roller 8 is transmitted to the movable frame 7, driving a relative displacement between the movable frame 7 and the second clamping plate 6 and stretching the first spring 24 until the buffer roller 8 is squeezed into contact with the second clamping plate 6, which means the clamping and positioning of the axial flow fan housing is completed. The process of the relative displacement between the movable frame 7 and the second clamping plate 6 is also a buffer for the work of the positioning structure. Combined with the hard rubber material of the buffer roller 8, it has a certain deformation ability and can effectively avoid strong contact with the outside of the axial flow fan housing rigidly, causing damage to the axial flow fan housing.

[0045] A servo motor 21 located between the buffer rollers 8 is fixedly connected to the movable frame 7. The buffer rollers 8 are movably connected to the movable frame 7 through bearings. The drive shaft of the servo motor 21 is connected to the buffer rollers 8 through a synchronous pulley 22 and a synchronous belt 23. An avoidance opening 14 adapted to the sizes of the servo motor 21, the synchronous pulley 22, and the synchronous belt 23 is formed on the second clamping plate 6. And a positioning groove 15 adapted to the outer shape of the buffer roller 8 is formed on the second clamping plate 6. The formation of the avoidance opening 14 facilitates the relative displacement between the second clamping plate 6 and the movable frame 7, and avoids hindering the displacement of the servo motor 21, the synchronous pulley 22, and the synchronous belt 23 following the movable frame 7. In the state of positioning and clamping the axial flow fan housing, the buffer rollers 8 are in contact with the outside of the axial flow fan housing. At the same time, the buffer rollers 8 are pressed against the positioning groove 15 on the second clamping plate 6 and are limited by the extrusion of the second clamping plate 6 and are locked and unable to rotate, ensuring the clamping and positioning effect on the axial flow fan housing. In this state of the positioning structure, the first spring 24 is in a stretched state and accumulates elastic potential energy. During the process of machining the axial flow fan housing, when it is necessary to rotate the axial flow fan housing to change the machining position, the cylinder 4 can retract a certain distance and still maintain the clamping state of the axial flow fan housing. However, the second clamping plate 6 and the movable frame 7 are reset a certain distance under the action of the elastic force of the first spring 24, so that the buffer roller 8 exits from the positioning groove 15 and the locked state of the buffer roller 8 is released. Then the servo motor 21 works and drives the buffer roller 8 to rotate through the transmission of its drive shaft, the synchronous pulley 22, and the synchronous belt 23. Subsequently, through the rolling friction between the buffer roller 8 and the axial flow fan housing, the axial flow fan housing is driven to rotate to change the machining position of the axial flow fan housing.

[0046] In this embodiment, as Figures 4 to 6As shown, the buffer assembly includes a buffer pad 9 fixedly connected to the outside of the first clamping plate 5. The cross-section of the buffer pad 9 is trapezoidal, and a weakening groove 16 is provided on the inner side wall of the buffer pad 9. A first support frame 17 located inside the buffer pad 9 is fixedly connected to the outside of the first clamping plate 5. The first support frame 17 is used to provide support for the buffer pad 9 after the buffer pad 9 is squeezed and deformed. It is made of hard plastic and has a certain deformation ability while also having a certain structural strength, which can limit the deformation range of the buffer pad 9 and avoid the dislocation of the buffer pad 9 during the deformation process. During the process of the first clamping plate 5 wrapping and clamping the outside of the axial flow fan housing under the traction of the cylinder 4, the buffer pad 9 can contact the outside of the axial flow fan housing instead of the first clamping plate 5. The buffer pad 9 is made of rubber and has good deformation ability, which can avoid the damage of the axial flow fan housing caused by the direct contact between the first clamping plate 5 and the axial flow fan housing during the clamping process. It cooperates with the second clamping plate 6, the movable frame 7 and the buffer roller 8 to realize the buffer protection during the clamping and positioning process. The trapezoidal structure of the buffer pad 9 and the weakening groove 16 inside it make the thickness value of the buffer pad 9 at the weakening groove 16 thinner and the strength weaker, so it is easier to deform under the action of external force. Therefore, after the buffer pad 9 is squeezed by the axial flow fan housing, it can generate deformation along the guidance of its trapezoidal structure and the area where the weakening groove 16 is opened, so as to ensure the shape of the buffer pad 9 after extrusion deformation, so that the first clamping plate 5 and the buffer pad 9 can be evenly distributed on the outside of the axial flow fan housing in the state of extrusion clamping, ensuring uniform stress distribution for clamping and positioning.

[0047] In this embodiment, as Figures 4 to 10As shown, the reinforcement component includes a pressure head 25 and a pressure plate 26 fixedly connected to both ends of the telescopic column 11. The pressure head 25 is located inside the movable frame 7, and a second spring 27 is fixedly connected between the pressure head 25 and the inner wall of the movable frame 7. The pressure plate 26 is located outside the movable frame 7. A limiting frame 12 is fixedly connected to the inside of the movable frame 7 and is located between the pressure heads 25. Pressing plates 29 are symmetrically installed above and below the outside of the limiting frame 12. The limiting frame 12 is located in the middle of the inside of the movable frame 7 and is between two telescopic columns 11 distributed up and down. The cross-section of the structure formed by the cooperation of the limiting frame 12 and the pressing plates 29 is U-shaped, and the end of the pressing plate 29 is inclined towards the middle of the limiting frame 12. An extrusion surface 30 is provided on the outside of the pressing plate 29, and a pressure-receiving surface 28 adapted to the shape of the extrusion surface 30 is provided on the outside of the pressure head 25. A pressure-supporting plate 32 is fixedly connected to the side of the pressing plate 29 away from the extrusion surface 30. A second support frame 31 for supporting the pressure-supporting plate 32 is fixedly connected to the inside of the limiting frame 12. The second support frames 31 are distributed in a V-shape on the limiting frame 12, and their ends face the position of the pressure-supporting plate 32 on the pressing plate 29. The pressure-supporting plate 32 is arc-shaped and is in contact with the ends of the second support frames 31. Deformation areas are provided at the joints between the second support frames 31 and the pressing plates 29 and the limiting frame 12. This area has been thinned, and the strength is weaker, so that after the pressing plates 29 and the second support frames 31 are subjected to external forces, they can more easily deform in the deformation area, thereby guiding the deformation states of the pressing plates 29 and the second support frames 31. The second support frames 31 are used for supporting and limiting the deformation of the pressing plates 29. After the external force applied to the pressing plates 29 is removed, by squeezing the pressure-supporting plate 32 by itself, it can assist the pressing plates 29 to quickly recover and can also prevent the pressing plates 29 from being damaged due to excessive deformation.

[0048] When the first clamping plate 5, the second clamping plate 6, the movable frame 7 and the buffer roller 8 cooperate to clamp and position the outside of the axial flow fan housing, after the buffer roller 8 contacts the axial flow fan housing, the relative displacement between the second clamping plate 6 and the movable frame 7 will synchronously drive the relative displacement between the telescopic column 11 and the limiting frame 12. The pressing head 25 on the telescopic column 11 will gradually approach the outside of the pressing plate 29 on the limiting frame 12 and come into contact with the pressing plate 29. The pressing surface 30 on the pressing plate 29 contacts and presses against the pressed surface 28 on the pressing head 25. The pressing head 25 decomposes the pressing force from the pressing plate 29 through the pressed surface 28 to form a pressing force in the direction away from the limiting frame 12, thereby driving the relative sliding between the telescopic column 11 and the movable frame 7 and compressing the second spring 27 until the pressing plate 26 comes into contact with the flange of the axial flow fan housing and presses against the flange, further increasing the contact points between the entire positioning structure and the axial flow fan housing during the clamping and positioning process, and being able to produce clamping and positioning effects in different directions, realizing the fixation of the axial flow fan housing during the processing. Before the second clamping plate 6 is docked with the positioning groove 15, if the pressing plate 26 has already contacted the flange of the axial flow fan housing, the pressing head 25 will still further exert pressure on the pressing plate 29 following the displacement of the movable frame 7, causing the pressing plate 29 to bend and deform in the deformation area and driving the pressing support plate 32 on the pressing plate 29 to press against the second support frame 31 on the limiting frame 12, also causing the second support frame 31 to bend and deform in the deformation area to adapt to the relative displacement between the second clamping plate 6 and the movable frame 7. While adapting the displacement, it will not cause excessive extrusion to the flange of the axial flow fan housing and damage the flange, being able to take into account the stability of the positioning structure in the clamping and positioning state and the buffer protection effect on the axial flow fan housing during the clamping process.

[0049] The present invention covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without these detailed descriptions. Additionally, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits, etc. are not described in detail.

[0050] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A positioning structure for machining an axial flow fan housing, characterized in that: It comprises a mounting seat, cylinders evenly distributed are symmetrically mounted on both sides of the mounting seat, first clamping plates are fixedly connected to the ends of the cylinders, second clamping plates are arranged between adjacent first clamping plates, a movable frame is sleeved on the outer side of the second clamping plate, buffer rollers are symmetrically mounted in the movable frame, and evenly distributed telescopic columns are sleeved on the movable frame; A buffer assembly, used for buffering when the first clamping plate and the second clamping plate perform clamping work, and the buffer assembly is connected to the first clamping plate; A reinforcement component, used for reinforcing the first clamping plate and the second clamping plate during clamping work, the reinforcement component being connected to the telescopic column; An elastic sheet is fixedly connected between the first clamping plate and the second clamping plate, the elastic sheet is wavy in shape, and a connecting seat located outside the elastic sheet is fixedly connected to both the first clamping plate and the second clamping plate; The cross section of the movable frame is U-shaped, the telescopic columns are distributed at the edge of the opening of the movable frame, the second clamping plate is provided with a sleeve interface, the movable frame is sleeved in the sleeve interface, and the movable frame is fixedly connected with uniformly distributed first springs between the second clamping plate; A servo motor located between the buffer rollers is fixedly connected to the movable frame, the buffer rollers are movably connected to the movable frame via bearings, and the drive shaft of the servo motor is associated with the buffer rollers via a synchronous wheel and a synchronous belt; The second clamping plate is provided with an escape opening adapted to the size of the servo motor, the synchronous wheel and the synchronous belt, and the second clamping plate is provided with a positioning groove adapted to the outer shape of the buffer drum; The buffer assembly includes a buffer pad fixedly connected to the outside of the first clamping plate, the cross section of the buffer pad is trapezoidal, and a weakened groove is provided on the inner side wall of the buffer pad, and the outside of the first clamping plate is fixedly connected to a first support frame located inside the buffer pad; The reinforcement assembly includes a pressing head and a pressing plate fixedly connected to both ends of the telescopic column, the pressing head is located on the inner side of the movable frame, and a second spring is fixedly connected between the pressing head and the inner side wall of the movable frame, and the pressing plate is located on the outer side of the movable frame; A limiting frame located between the pressure heads is fixedly connected to the inner side of the movable frame, an extrusion plate is symmetrically installed on the outer side of the limiting frame, an extrusion surface is arranged on the outer side of the extrusion plate, a pressure-bearing surface matched with the shape of the extrusion surface is arranged on the outer side of the pressure head, a pressure support plate is fixedly connected to the side of the extrusion plate away from the extrusion surface, and a second support frame supporting the pressure support plate is fixedly connected to the inner side of the limiting frame.

2. The positioning structure for machining an axial flow fan housing according to claim 1, characterized in that: The mounting seat is fixedly connected with evenly distributed electric telescopic rods, the top ends of the electric telescopic rods are fixedly connected with a lifting platform, and the lifting platform is located below the cylinder.

3. The positioning structure for machining an axial flow fan housing according to claim 1, characterized in that: A connecting rod is sleeved between adjacent connecting seats, both ends of the connecting rod are sleeved in the connecting seats, and the connecting rod and the connecting seat are movably connected via a rotating shaft.

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