Ducted fan housing casting structure and method based on infrared assisted positioning

Abstract

The application provides a ducted fan shell casting structure and method based on infrared auxiliary positioning, relates to the technical field of ducted fan shell casting, and comprises an anti-loosening mounting unit, a guiding driving unit and a casting positioning unit; the guiding driving unit is mounted on the anti-loosening mounting unit; the casting positioning unit is mounted on the anti-loosening mounting unit and the guiding driving unit; the guiding driving unit is used for guiding the casting positioning unit, and the guiding driving unit is also used for driving the anti-loosening mounting unit; the two infrared transmitting ends and the two infrared receiving ends are arranged, the position deviation after the casting movable mold and the casting stationary mold are contacted can be automatically detected, the filling position of the metal liquid in the cavity during the ducted fan shell casting process cannot have the position deviation, and the uniformity of the shell wall thickness is ensured; the problem that the existing casting mold does not have the infrared positioning function and the position deviation after the casting movable mold and the casting stationary mold are contacted cannot be found in time by the staff is solved.

Description

Technical Field

[0001] This invention belongs to the field of ducted fan housing casting technology, and more specifically, relates to a ducted fan housing casting structure and method based on infrared-assisted positioning. Background Technology

[0002] Ductless fan housings are mostly manufactured using an integrated casting process, which can precisely shape complex surfaces with support plates to meet the aerodynamic design requirements for airflow guidance and effectively prevent eddies and airflow reversal. This process ensures housing precision, reduces subsequent machining processes, improves production efficiency, and can accommodate various high-strength alloy materials. While ensuring housing strength and load-bearing capacity, it balances manufacturing costs and difficulty, meeting the application needs in aerospace and other fields. Currently, ductless fan housing casting generally lacks infrared positioning capabilities. When there is a positional deviation between the casting moving mold and the casting stationary mold after contact, it is difficult for workers to detect, resulting in uneven housing wall thickness. Thin areas have high forming risks, while thick areas increase product weight, making it impossible to balance lightweight and forming reliability. Summary of the Invention

[0003] This disclosure relates to a casting structure and method for ducted fan housings based on infrared-assisted positioning. It includes an anti-loosening installation unit, a guiding drive unit, and a casting positioning unit. The arrangement of two infrared transmitters and two infrared receivers automatically detects whether there is a positional deviation after the casting moving mold and the casting stationary mold come into contact, ensuring that the molten metal filling position in the cavity remains unchanged during the ducted fan housing casting process, thus guaranteeing uniform housing wall thickness. This solves the problem that existing casting molds lack infrared positioning functionality, making it difficult for workers to detect positional deviations after the casting moving mold and the casting stationary mold come into contact.

[0004] In a first aspect, this disclosure provides a ducted fan housing casting structure based on infrared-assisted positioning, comprising: an anti-loosening mounting unit, a guide drive unit, and a casting positioning unit; the guide drive unit is mounted on the anti-loosening mounting unit; the casting positioning unit is mounted on the anti-loosening mounting unit and the guide drive unit; the guide drive unit is used to guide the casting positioning unit, and the guide drive unit is also used to drive the anti-loosening mounting unit.

[0005] In at least some embodiments, the anti-loosening installation unit includes: an anti-loosening mounting frame, movable anti-loosening rods, and circular limiting plates a; the anti-loosening mounting frame has two circular positioning grooves; there are two movable anti-loosening rods, and the two movable anti-loosening rods are slidably mounted on the anti-loosening mounting frame; the outer ends of the two movable anti-loosening rods are chamfered, and the inner ends of the two movable anti-loosening rods are rounded; there are two circular limiting plates a, and the two circular limiting plates a are fixedly mounted on the outside of the two movable anti-loosening rods, and the inner sides of the two circular limiting plates a are in contact with the anti-loosening mounting frame.

[0006] In at least some embodiments, the anti-loosening mounting unit further includes: a circular limiting plate b and a helical spring a; there are two circular limiting plates b, and the two circular limiting plates b are fixedly installed on the outside of the two movable anti-loosening rods; there are two helical springs a, and the two helical springs a are sleeved on the outside of the two movable anti-loosening rods, and the two helical springs a are located between the anti-loosening mounting frame and the two circular limiting plates b.

[0007] In at least some embodiments, the guide drive unit includes: a circular connecting rod and a guide drive frame; the circular connecting rod is fixedly mounted on an anti-loosening mounting bracket; and the guide drive frame is rotatably mounted on the outside of the circular connecting rod.

[0008] In at least some embodiments, the guide drive unit further includes: a strong magnet a and an anti-rotation positioning pin; the strong magnet a is provided in two rows, and the two rows of strong magnet a are fixedly installed on the guide drive frame; the anti-rotation positioning pin is slidably installed on the guide drive frame, and the outer end of the anti-rotation positioning pin is provided with a chamfer, and the outer end of the anti-rotation positioning pin is inserted into the corresponding circular positioning groove.

[0009] In at least some embodiments, the guide drive unit further includes: a circular limiting plate c and a helical spring b; the circular limiting plate c is fixedly installed outside the anti-rotation positioning pin; the helical spring b is sleeved outside the anti-rotation positioning pin, and the helical spring b is located between the guide drive frame and the circular limiting plate c.

[0010] In at least some embodiments, the casting positioning unit includes: a mold connecting frame, an infrared transmitter, and an infrared receiver; there are two mold connecting frames, and the two mold connecting frames are located on top of the guide drive frame; there are two infrared transmitters, and the two infrared transmitters are fixedly installed on the anti-loosening mounting frame; there are two infrared receivers, and the two infrared receivers are fixedly installed on the two mold connecting frames.

[0011] In at least some embodiments, the casting positioning unit further includes: a movable anti-loosening block and an adjusting screw; there are two movable anti-loosening blocks, and the two movable anti-loosening blocks are slidably mounted on two mold connecting frames respectively; there are two adjusting screws, and the two adjusting screws are rotatably mounted on two mold connecting frames respectively.

[0012] In at least some embodiments, the casting positioning unit further includes: a control bracket and a powerful magnet b; there are two control brackets, which are respectively fixedly installed on two movable anti-loosening blocks, and the two control brackets are also threadedly connected to two adjusting screws; there are two rows of powerful magnets b, and the two rows of powerful magnets b are slidably installed on two mold connecting frames; the top ends of the two rows of powerful magnets b are fixedly connected to the two control brackets, and the two rows of powerful magnets b are concentrically arranged with the two rows of powerful magnets a.

[0013] In another aspect, this disclosure provides a method for casting ducted fan housings based on infrared-assisted positioning, comprising the following steps: 1) Make the two mold connecting brackets contact the moving mold and the stationary mold respectively, and then connect the two mold connecting brackets to the moving mold and the stationary mold respectively with screws; 2) Connect the anti-loosening mounting bracket to the metal bracket on the casting equipment using screws; 3) Turn the two adjusting screws with a wrench to make the two movable anti-loosening blocks contact the screws on the two mold connecting brackets; 4) Pull the anti-rotation positioning pin, then rotate the guide drive frame ninety degrees, and then insert the anti-rotation positioning pin into the corresponding circular positioning groove; 5) Connect the two infrared transmitters and two infrared receivers to the external circuit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, when the two movable anti-loosening rods slide outward a certain distance, the two movable anti-loosening rods automatically contact the two mounting screws on the anti-loosening mounting bracket, thus playing an anti-loosening role and preventing the anti-loosening mounting bracket from becoming loose after installation; the two helical springs a play an elastic positioning role for the two movable anti-loosening rods, so that the two movable anti-loosening rods will only slide outward after being subjected to force, which is beneficial to the tightening and loosening of the two mounting screws on the anti-loosening mounting bracket.

[0015] 2. In this invention, the setting of two infrared emitting ends and two infrared receiving ends can automatically detect whether there is a positional deviation after the casting moving mold and the casting stationary mold come into contact, so that there will be no deviation in the filling position of the molten metal in the cavity during the casting process of the duct fan shell, ensuring that the shell wall thickness is uniform; the setting of two rows of strong magnets a and two rows of strong magnets b plays a positioning role for the two mold connecting frames. In addition, when the staff turns the two adjusting screws with a wrench, the two control brackets drive the two rows of powerful magnets b to move upward, separating the two rows of powerful magnets b from the two rows of powerful magnets a, which makes it convenient for the staff to adjust the angle of the guide drive frame later. When the two control brackets move upward under the action of the two adjusting screws, the two movable anti-loosening blocks contact the four mounting screws on the two mold connecting frames, which plays an anti-loosening role and ensures that the two mold connecting frames will not be loose after installation.

[0016] 3. In this invention, when the guide drive frame is used horizontally, it can assist in controlling the installation position of the two mold connecting frames, ensuring that the infrared transmitter and receiver can be precisely aligned after the two mold connecting frames are installed; when the guide drive frame is used vertically, it can push the two movable anti-loosening rods to move outward automatically, so that the two movable anti-loosening rods automatically contact the two mounting screws on the anti-loosening mounting bracket; the two rows of strong magnets a and two rows of strong magnets b also serve as a reminder, so that when the operator does not turn the two adjusting screws with a wrench, the operator will find it inconvenient to turn the guide drive frame under the action of the two rows of magnets. In addition, the two circular positioning grooves and the anti-rotation positioning pins play a positioning role for the guide drive frame after rotation; the circular limit plate c and the helical spring b prevent the anti-rotation positioning pins from falling off, so that the anti-rotation positioning pins will only move when pulled. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A schematic diagram of the anti-loosening installation unit of the present invention is shown; Figure 3 A schematic diagram of the structure of the guide drive unit of the present invention is shown; Figure 4 The present invention is shown. Figure 1 The overall bottom view structure diagram shows that area A is the area where the anti-rotation positioning pin and the circular positioning groove cooperate, and area C is the partial assembly area of ​​the mold connecting frame. Figure 5 The present invention is shown. Figure 4 A magnified schematic diagram of a portion of region A in the middle; Figure 6 The present invention is shown. Figure 1 A schematic diagram of the structure from the right-side main viewpoint; Figure 7 The present invention is shown. Figure 6 A cross-sectional view along the BB direction is shown to illustrate the assembly and mating structure of the mold connecting frame, adjusting screw, control bracket, strong magnet b, and guide drive frame. Figure 8 The present invention is shown. Figure 4 A magnified schematic diagram of a portion of region C in the middle; Figure 9 The present invention is shown. Figure 7 A magnified schematic diagram of a portion of region D in the middle; Figure 10 The diagram shows the overall assembly structure of the present invention after the components are disassembled and installed, illustrating the separate installation structure of the anti-loosening installation unit, the guide drive unit, and the two sets of casting positioning units.

[0020] List of reference numerals in the attached diagram: 100. Anti-loosening installation unit; 101. Anti-loosening installation bracket; 1011. Circular positioning groove; 102. Movable anti-loosening rod; 103. Circular limit plate a; 104. Circular limit plate b; 105. Helical spring a; 200. Guide drive unit; 201. Circular connecting rod; 202. Guide drive frame; 203. Strong magnet a; 204. Anti-rotation positioning pin; 205. Circular limit plate c; 206. Helical spring b; 300. Casting positioning unit; 301. Mold connecting frame; 302. Infrared transmitter; 303. Infrared receiver; 304. Movable anti-loosening block; 305. Adjusting screw; 306. Control bracket; 307. Strong magnet b. Detailed Implementation

[0021] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0022] The manufacturing of ducted fan housings involves a complete technology chain with multiple coupled processes and progressively increasing precision, encompassing several continuous stages such as casting, mold closing and positioning inspection, heat treatment deformation control, precision machining, and motor-housing assembly. Within this manufacturing chain, geometric accuracy and wall thickness uniformity exhibit strict transmissibility and cumulativeity: dimensional deviations in upstream processes will cascade and amplify downstream, ultimately affecting the aerodynamic performance and structural reliability of the ducted fan. Therefore, ensuring the consistency of control benchmarks at each stage is a core prerequisite for achieving precision manufacturing throughout the entire process.

[0023] In the aforementioned technology chain, the mold-closing casting process establishes the physical reference of the initial casting and transmits cavity geometry information to subsequent heat treatment and machining stages. Specifically, the spatial alignment of the moving and stationary molds after mold closure directly determines the filling position of the molten metal within the cavity and the wall thickness distribution after solidification. The shell wall thickness is not only a key design parameter for structural load-bearing and lightweighting but also a core boundary condition upon which downstream processes—including heat treatment deformation simulation prediction, precision machining coordinate registration, lip casting compensation, cavity optimization inversion, and assembly vibration analysis—depend.

[0024] However, existing casting equipment faces a bottleneck in the mold-closing stage, hindering overall process accuracy: it generally lacks infrared positioning capabilities. When there is a positional deviation after the moving mold and stationary mold come into contact, there is a lack of effective online detection methods, making it difficult for operators to detect mold-closing misalignment in real time. This deviation will trigger serious cascading consequences: the misalignment of the molten metal filling position within the cavity leads to uneven shell wall thickness, and the distortion of wall thickness distribution will directly undermine the accuracy of heat treatment deformation prediction, the configuration of machining parameters in the finishing stage, lip casting control, and mold cavity optimization control. Ultimately, the assembly weight reduction stage will also suffer from inaccurate judgments due to uneven wall thickness.

[0025] Therefore, there is an urgent need to develop a casting structure that integrates infrared emission and reception for positioning. This structure can automatically detect and feedback positional deviations at the moment of contact between the moving mold and the stationary mold, ensuring the accuracy of the molten metal filling position in the cavity. This will guarantee the uniformity of the shell wall thickness from the source and provide a reliable starting point for the entire process technology chain, including subsequent heat treatment deformation prediction, differentiated finishing, cavity optimization, and lightweight assembly.

[0026] Example: Please refer to Figures 1 to 10 As shown: The present invention provides a ducted fan housing casting structure based on infrared-assisted positioning, including: an anti-loosening mounting unit 100, a guide drive unit 200, and a casting positioning unit 300; the guide drive unit 200 is mounted on the anti-loosening mounting unit 100; the casting positioning unit 300 is mounted on the anti-loosening mounting unit 100 and the guide drive unit 200; the guide drive unit 200 is used to guide the casting positioning unit 300, and the guide drive unit 200 is also used to drive the anti-loosening mounting unit 100.

[0027] In this embodiment of the disclosure, such as Figure 2 and Figure 5As shown, the anti-loosening installation unit 100 includes: an anti-loosening installation frame 101, movable anti-loosening rods 102, and circular limiting plates a103; the anti-loosening installation frame 101 has two circular positioning grooves 1011; there are two movable anti-loosening rods 102, and the two movable anti-loosening rods 102 are slidably installed on the anti-loosening installation frame 101; the outer ends of the two movable anti-loosening rods 102 are chamfered, and the inner ends of the two movable anti-loosening rods 102 are rounded; there are two circular limiting plates a103, and the two circular limiting plates a103 are fixedly installed on the two movable anti-loosening rods 102. The outer side of the two circular limiting plates a103 is in contact with the anti-loosening mounting bracket 101; the anti-loosening mounting unit 100 also includes: a circular limiting plate b104 and a helical spring a105; there are two circular limiting plates b104, and the two circular limiting plates b104 are fixedly installed on the outer side of the two movable anti-loosening rods 102; there are two helical springs a105, and the two helical springs a105 are sleeved on the outer side of the two movable anti-loosening rods 102, and the two helical springs a105 are located between the anti-loosening mounting bracket 101 and the two circular limiting plates b104.

[0028] The specific function of the anti-loosening installation unit 100 is as follows: Since the two movable anti-loosening rods 102 are slidably installed on the anti-loosening installation frame 101, when the two movable anti-loosening rods 102 slide outward a certain distance, the two movable anti-loosening rods 102 automatically contact the two installation screws on the anti-loosening installation frame 101, thus playing an anti-loosening role and preventing the anti-loosening installation frame 101 from becoming loose after installation; Furthermore, since the two circular limiting plates b104 are fixedly installed on the outside of the two movable anti-loosening rods 102, and the two helical springs a105 are sleeved on the outside of the two movable anti-loosening rods 102, and the two helical springs a105 are located between the anti-loosening installation frame 101 and the two circular limiting plates b104, they play an elastic positioning role for the two movable anti-loosening rods 102, so that the two movable anti-loosening rods 102 will only slide outward when subjected to force, which is beneficial to the tightening and loosening of the two installation screws on the anti-loosening installation frame 101.

[0029] In this embodiment of the disclosure, such as Figure 1 , Figure 8 and Figure 6As shown, the casting positioning unit 300 includes: a mold connecting frame 301, an infrared transmitter 302, and an infrared receiver 303; two mold connecting frames 301 are provided, and the two mold connecting frames 301 are located on top of the guide drive frame 202; two infrared transmitters 302 are provided, and the two infrared transmitters 302 are fixedly installed on the anti-loosening mounting frame 101; two infrared receivers 303 are provided, and the two infrared receivers 303 are fixedly installed on the two mold connecting frames 301; the casting positioning unit 300 also includes: a movable anti-loosening block 304 and an adjusting screw 305; two movable anti-loosening blocks 304 are provided, and the two movable anti-loosening blocks 304 are slidably installed on the two mold connecting frames 301. Two adjusting screws 305 are provided, and the two adjusting screws 305 are rotatably mounted on the two mold connecting brackets 301; the casting positioning unit 300 also includes: control brackets 306 and strong magnets b307; two control brackets 306 are provided, and the two control brackets 306 are fixedly mounted on the two movable anti-loosening blocks 304, and the two control brackets 306 are also threadedly connected to the two adjusting screws 305; two rows of strong magnets b307 are provided, and the two rows of strong magnets b307 are slidably mounted on the two mold connecting brackets 301; the top ends of the two rows of strong magnets b307 are fixedly connected to the two control brackets 306, and the two rows of strong magnets b307 are concentrically arranged with the two rows of strong magnets a203.

[0030] The specific function of the casting positioning unit 300 is as follows: Since the two mold connecting frames 301 are fixedly installed on the casting moving mold and the casting stationary mold respectively, and the two infrared emitting ends 302 are fixedly installed on the anti-loosening mounting frame 101, and the two infrared receiving ends 303 are fixedly installed on the two mold connecting frames 301, it can automatically detect whether there is a positional deviation after the casting moving mold and the casting stationary mold come into contact, so that there will be no deviation in the filling position of the molten metal in the cavity during the casting process of the duct fan housing, ensuring that the housing wall thickness is uniform; In addition, since the two rows of strong magnets a203 are fixedly installed on the guide drive frame 202, and the two rows of strong magnets b307 are slidably installed on the two mold connecting frames 301, and the two rows of strong magnets b307 and the two rows of strong magnets a203 are concentrically arranged, they play a positioning role for the two mold connecting frames 301; Furthermore, since the two adjusting screws 305 are rotatably mounted on the two mold connecting brackets 301, and the two control brackets 306 are also threadedly connected to the two adjusting screws 305, when the operator turns the two adjusting screws 305 with a wrench, the two control brackets 306 drive the two rows of powerful magnets b307 to move upward, causing the two rows of powerful magnets b307 to separate from the two rows of powerful magnets a203, which facilitates the operator to adjust the angle of the guide drive frame 202 later. Also, since the two movable anti-loosening blocks 304 are slidably mounted on the two mold connecting brackets 301, and the two control brackets 306 are fixedly mounted on the two movable anti-loosening blocks 304, when the two control brackets 306 move upward under the action of the two adjusting screws 305, the two movable anti-loosening blocks 304 contact the four mounting screws on the two mold connecting brackets 301, which plays an anti-loosening role, so that the two mold connecting brackets 301 will not be loose after installation.

[0031] In this embodiment of the disclosure, such as Figure 3 , Figure 5 and Figure 9 As shown, the guide drive unit 200 includes: a circular connecting rod 201 and a guide drive frame 202; the circular connecting rod 201 is fixedly mounted on the anti-loosening mounting bracket 101; the guide drive frame 202 is rotatably mounted on the outside of the circular connecting rod 201; the guide drive unit 200 also includes: a strong magnet a203 and an anti-rotation positioning pin 204; the strong magnet a203 has two rows, and the two rows of strong magnets a203 are fixedly mounted on the guide drive frame 202; the anti-rotation positioning pin 204 is slidably mounted on the guide drive frame 202. The guide drive unit 200 also includes: a circular limiting plate c205 and a helical spring b206; the circular limiting plate c205 is fixedly installed on the outside of the anti-rotation positioning pin 204; the helical spring b206 is sleeved on the outside of the anti-rotation positioning pin 204 and is located between the guide drive unit 202 and the circular limiting plate c205.

[0032] The specific function of the guide drive unit 200 is as follows: Since the circular connecting rod 201 is fixedly installed on the anti-loosening mounting bracket 101, and the guide drive bracket 202 is rotatably installed outside the circular connecting rod 201, when the guide drive bracket 202 is used horizontally, the guide drive bracket 202 can assist in controlling the installation position of the two mold connecting brackets 301, ensuring that after the two mold connecting brackets 301 are installed, the infrared transmitter 302 and the infrared receiver 303 can be precisely aligned; when the guide drive bracket 202 is used vertically, the guide drive bracket 202 can push the two movable anti-loosening rods 102 to move automatically outward, so that the two movable anti-loosening rods 102 automatically contact the two mounting screws on the anti-loosening mounting bracket 101; the two rows of strong magnets a203 and two rows of strong magnets b307 also serve as a prompting function. When the operator does not turn the two adjusting screws 305 with a wrench, the operator will find it inconvenient to turn the guide drive bracket 202 under the action of the two rows of magnetic force; Furthermore, because the anti-loosening mounting bracket 101 has two circular positioning grooves 1011, and the anti-rotation positioning pin 204 is slidably mounted on the guide drive bracket 202, with the outer end of the anti-rotation positioning pin 204 inserted into the corresponding circular positioning groove 1011, it plays a positioning role for the rotated guide drive bracket 202; and because the circular limiting plate c205 is fixedly mounted on the outside of the anti-rotation positioning pin 204, and the helical spring b206 is sleeved on the outside of the anti-rotation positioning pin 204, and the helical spring b206 is located between the guide drive bracket 202 and the circular limiting plate c205, it prevents the anti-rotation positioning pin 204 from falling off, so that the anti-rotation positioning pin 204 will only move after being pulled.

[0033] This invention provides a method for casting ducted fan housings based on infrared-assisted positioning, comprising the following steps: 1) Make the two mold connecting brackets 301 contact the casting moving mold and the casting stationary mold respectively, and then connect the two mold connecting brackets 301 to the casting moving mold and the casting stationary mold respectively with screws; 2) Connect the anti-loosening mounting bracket 101 to the metal bracket on the casting equipment using screws; 3) Turn the two adjusting screws 305 with a wrench to make the two movable anti-loosening blocks 304 contact the screws on the two mold connecting brackets 301; 4) Pull the anti-rotation positioning pin 204, then rotate the guide drive frame 202 ninety degrees, and then insert the anti-rotation positioning pin 204 into the corresponding circular positioning groove 1011; 5) Connect the two infrared transmitters 302 and the two infrared receivers 303 to the external circuit.

[0034] The specific usage and function of this embodiment are as follows: In use, the two mold connecting brackets 301 are first brought into contact with the moving mold and the stationary mold, respectively, and then connected to the moving mold and the stationary mold with screws. When the guide drive frame 202 is used laterally, it can assist in controlling the installation position of the two mold connecting brackets 301, ensuring that the infrared transmitter 302 and the infrared receiver 303 are precisely aligned after the two mold connecting brackets 301 are installed. The anti-loosening mounting bracket 101 is then connected to the casting equipment with screws. The metal brackets are connected; by turning the two adjusting screws 305 with a wrench, the two movable anti-loosening blocks 304 contact the screws on the two mold connecting brackets 301, which plays an anti-loosening role and ensures that the two mold connecting brackets 301 will not be loose after installation; when the operator turns the two adjusting screws 305 with a wrench, the two control brackets 306 drive the two rows of strong magnets b307 to move upward, so that the two rows of strong magnets b307 separate from the two rows of strong magnets a203; the two rows of strong magnets a203 and the two rows The powerful magnet B307 also serves as a prompt. When the operator does not turn the two adjusting screws 305 with a wrench, the two rows of magnetic forces make it inconvenient for the operator to rotate the guide drive frame 202. Pulling the anti-rotation positioning pin 204 and then rotating the guide drive frame 202 ninety degrees, the anti-rotation positioning pin 204 is then inserted into the corresponding circular positioning groove 1011. When the guide drive frame 202 is used vertically, it can push the two movable anti-loosening rods 102 to move automatically outward. When the two movable anti-loosening rods 102 are in use... When rod 102 slides outward a certain distance, the two movable anti-loosening rods 102 automatically contact the two mounting screws on the anti-loosening mounting bracket 101, which plays an anti-loosening role and ensures that the anti-loosening mounting bracket 101 will not be loose after installation. Connecting the two infrared transmitters 302 and the two infrared receivers 303 to the external circuit can automatically detect whether there is a positional deviation after the casting moving mold and the casting stationary mold come into contact, so that there will be no deviation in the filling position of the molten metal in the cavity during the casting process of the duct fan housing, and ensure that the housing wall thickness is uniform.

[0035] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0036] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0037] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A ducted fan housing casting structure based on infrared-assisted positioning, comprising: The anti-loosening installation unit (100), the guide drive unit (200), and the casting positioning unit (300) are characterized in that: The anti-loosening installation unit (100) includes an anti-loosening installation frame (101) and movable anti-loosening rods (102). There are two movable anti-loosening rods (102), and the two movable anti-loosening rods (102) are slidably installed on the anti-loosening installation frame (101). The guide drive unit (200) is installed on the anti-loosening installation unit (100). The guide drive unit (200) includes a circular connecting rod (201) and a guide drive frame (202); the casting positioning unit (300) is mounted on the anti-loosening installation unit (100) and the guide drive unit (200); the guide drive unit (200) is used to guide the casting positioning unit (300), and the guide drive unit (200) is also used to drive the anti-loosening installation unit (100); The casting positioning unit (300) includes a mold connecting frame (301), an infrared transmitter (302), and an infrared receiver (303); there are two infrared transmitters (302), and the two infrared transmitters (302) are fixedly installed on the anti-loosening mounting frame (101); there are two infrared receivers (303), and the two infrared receivers (303) are fixedly installed on two mold connecting frames (301).

2. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 1, characterized in that, The anti-loosening installation unit (100) further includes: a circular limiting plate a (103); two circular positioning grooves (1011) are provided on the anti-loosening installation frame (101); the outer ends of the two movable anti-loosening rods (102) are chamfered, and the inner ends of the two movable anti-loosening rods (102) are rounded; there are two circular limiting plates a (103), and the two circular limiting plates a (103) are fixedly installed on the outside of the two movable anti-loosening rods (102), and the inner side of the two circular limiting plates a (103) is in contact with the anti-loosening installation frame (101).

3. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 2, characterized in that, The anti-loosening installation unit (100) further includes: a circular limiting plate b (104) and a helical spring a (105); there are two circular limiting plates b (104), and the two circular limiting plates b (104) are fixedly installed on the outside of the two movable anti-loosening rods (102); there are two helical springs a (105), and the two helical springs a (105) are sleeved on the outside of the two movable anti-loosening rods (102), and the two helical springs a (105) are located between the anti-loosening installation frame (101) and the two circular limiting plates b (104).

4. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 2, characterized in that, The circular connecting rod (201) is fixedly installed on the anti-loosening mounting bracket (101); the guide drive bracket (202) is rotatably installed on the outside of the circular connecting rod (201).

5. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 4, characterized in that, The guide drive unit (200) further includes: a strong magnet a (203) and an anti-rotation positioning pin (204); the strong magnet a (203) is provided in two rows, and the two rows of strong magnet a (203) are fixedly installed on the guide drive frame (202); the anti-rotation positioning pin (204) is slidably installed on the guide drive frame (202), and the outer end of the anti-rotation positioning pin (204) is provided with a chamfer, and the outer end of the anti-rotation positioning pin (204) is inserted into the corresponding circular positioning groove (1011).

6. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 5, characterized in that, The guide drive unit (200) further includes: a circular limiting plate c (205) and a helical spring b (206); the circular limiting plate c (205) is fixedly installed on the outside of the anti-rotation positioning pin (204); the helical spring b (206) is sleeved on the outside of the anti-rotation positioning pin (204), and the helical spring b (206) is located between the guide drive frame (202) and the circular limiting plate c (205).

7. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 5, characterized in that, There are two mold connecting frames (301), and the two mold connecting frames (301) are located on top of the guide drive frame (202).

8. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 7, characterized in that, The casting positioning unit (300) further includes: a movable anti-loosening block (304) and an adjusting screw (305); there are two movable anti-loosening blocks (304), and the two movable anti-loosening blocks (304) are slidably installed on the two mold connecting frames (301) respectively; there are two adjusting screws (305), and the two adjusting screws (305) are rotatably installed on the two mold connecting frames (301) respectively.

9. The ducted fan housing casting structure based on infrared-assisted positioning according to claim 8, characterized in that, The casting positioning unit (300) further includes: a control bracket (306) and a powerful magnet b (307); there are two control brackets (306), and the two control brackets (306) are respectively fixedly installed on two movable anti-loosening blocks (304), and the two control brackets (306) are respectively threadedly connected to two adjusting screws (305); there are two rows of powerful magnets b (307), and the two rows of powerful magnets b (307) are slidably installed on two mold connecting frames (301); the tops of the two rows of powerful magnets b (307) are fixedly connected to the two control brackets (306), and the two rows of powerful magnets b (307) are concentrically arranged with the two rows of powerful magnets a (203).

10. A ducted fan housing casting method based on infrared-assisted positioning, using the ducted fan housing casting structure based on infrared-assisted positioning as described in claim 8, characterized in that, The steps are as follows: 1) Make the two mold connecting brackets (301) contact the casting moving mold and the casting stationary mold respectively, and then connect the two mold connecting brackets (301) to the casting moving mold and the casting stationary mold respectively with screws; 2) Connect the anti-loosening mounting bracket (101) to the metal bracket on the casting equipment using screws; 3) Turn the two adjusting screws (305) with a wrench to make the two movable anti-loosening blocks (304) contact the screws on the two mold connecting brackets (301); 4) Pull the anti-rotation positioning pin (204), then rotate the guide drive frame (202) ninety degrees, and then insert the anti-rotation positioning pin (204) into the corresponding circular positioning groove (1011); 5) Connect the two infrared transmitters (302) and the two infrared receivers (303) to the external line.

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