Infrared positioning structure and method for die-casting a turbofan casing

Abstract

The application discloses a kind of duct fan shell die-casting mould infrared positioning structure and method, belong to die-casting mould technical field.The structure includes being received in die-casting mould connection guide portion, detachably mounted on it infrared positioning portion and the multi-purpose limiting portion with limiting and protection function.By hiding connection guide portion in storage cavity, the mould can be placed horizontally;The quick disassembly of infrared positioning portion is realized by the cooperation of movable limiting rod and arc limiting groove;And after disassembly, metal protection plate is automatically ejected, to prevent damage to the positioning structure during maintenance, the application significantly improves the die-casting of duct fan shell The clamping precision of mould and mould maintenance efficiency.

Description

Technical Field

[0001] This invention belongs to the field of ducted fan housing casting technology, and more specifically, relates to an infrared positioning structure and method for ducted fan housing die casting molds. Background Technology

[0002] The manufacturing of ducted fan housings involves a complete technology chain with multiple coupled processes and progressively increasing precision, encompassing multiple continuous stages such as casting, mold positioning and inspection, heat treatment deformation control, precision machining, and motor-housing assembly. In this manufacturing chain, the engineering adaptability of inspection methods has a critical impact: if the sensing technology used in upstream processes lacks maintainability, inspection will be interrupted due to equipment downtime, calibration failure, or module damage, thereby causing all downstream control links that rely on the inspection data to lose their information source. Therefore, ensuring the reliable operation and convenient maintenance of core inspection modules is a core prerequisite for achieving continuous precision manufacturing throughout the entire process.

[0003] In the aforementioned technology chain, infrared positioning detection, as a key sensing method in the mold closing process, plays the role of real-time monitoring of the alignment between the moving mold and the stationary mold. Its detection accuracy and operational stability directly determine the reliability of the cavity geometry information. The mold closing position data acquired by this sensing module constitutes the core information source for subsequent heat treatment deformation prediction, finishing path planning, casting compensation control, and assembly performance verification. However, infrared positioning modules face practical problems such as mold repair, component aging, and optical path contamination during long-term operation in industrial settings, requiring frequent disassembly, maintenance, or replacement and calibration.

[0004] In existing technologies, infrared positioning structures are mostly fixed to die-casting molds with bolts, which is cumbersome and time-consuming to disassemble and assemble, and is prone to positioning errors due to repeated clamping. Once the infrared module needs maintenance, it often leads to the shutdown of the entire production line, or is forced to continue production without online detection, which significantly increases the risk of missed detection of mold closing deviations. This maintenance bottleneck will cause serious cascading consequences: the mold closing position deviations caused during the detection interruption cannot be identified in time, resulting in the displacement of the molten metal filling position in the cavity and uneven shell wall thickness. The distortion of wall thickness distribution will be transmitted downstream along the manufacturing chain, destroying the accuracy of the boundary conditions of the subsequent simulation prediction model, causing the deformation compensation calculation to deviate from reality, and the differentiated path planning in the finishing stage to lose a reliable data basis, ultimately affecting the vibration performance judgment and weight reduction optimization effect in the assembly stage.

[0005] Therefore, there is an urgent need to develop an infrared positioning device that integrates a storage cavity, facilitates maintenance and mold repair, and features a modular quick-release structure. This device would enable convenient separation and precise repositioning of the infrared positioning unit from the die-casting mold, significantly improving maintenance efficiency while ensuring detection accuracy, and providing a continuous and reliable starting point for online sensing capabilities across the entire technology chain. Summary of the Invention

[0006] This disclosure relates to an infrared positioning structure and method for die-casting molds of ducted fan housings, which includes a connecting guide, an infrared positioning part, a multi-purpose limiting part, a circular magnet, and a metal protective plate; it facilitates the quick disassembly of the infrared positioning part, which is beneficial for subsequent maintenance and repair of the die-casting mold; and it solves the problem of inconvenient quick disassembly and quick installation of infrared positioning structures.

[0007] In a first aspect, this disclosure provides an infrared positioning structure for a die-casting mold of a ducted fan housing, comprising: a connecting guide, an infrared positioning part, and a multi-purpose limiting part; the die-casting mold has a receiving cavity and a protective groove; the connecting guide is mounted on the die-casting mold and is located in the receiving cavity; the infrared positioning part is mounted on the connecting guide and is used to ensure the die-casting accuracy of the ducted fan housing; the multi-purpose limiting part is mounted on the connecting guide and is used to limit the connecting guide, and also to limit the infrared positioning part.

[0008] In at least some embodiments, the connecting guide includes: a mold connecting seat, a circular guide post, and a movable positioning seat; the mold connecting seat is fixedly installed on the die-casting mold; the circular guide post is fixedly installed on the front side of the mold connecting seat; there are two movable positioning seats, and the two movable positioning seats are slidably installed on the mold connecting seat; the outer ends of the two movable positioning seats are semi-circular structures, and the outer ends of the two movable positioning seats are in contact with the die-casting mold.

[0009] In at least some embodiments, the connecting guide further includes: a circular mounting shaft and a helical spring a; there are four circular mounting shafts in total, and the four circular mounting shafts are fixedly mounted on the mold connecting seat, and the four circular mounting shafts are also slidably connected to two movable positioning seats; there are four helical springs a in total, and the four helical springs a are sleeved on the outside of the four circular mounting shafts, and the four helical springs a are located between the mold connecting seat and the two movable positioning seats.

[0010] In at least some embodiments, the infrared positioning unit includes: a cross-shaped connector, a positioning bracket, and circular limiting rods; the cross-shaped connector is slidably installed on the outside of the circular guide post, and arc-shaped limiting grooves are provided on both the upper and lower sides of the cross-shaped connector, and the left and right sides of the cross-shaped connector are in contact with the die-casting mold; the positioning bracket is fixedly installed on the front side of the cross-shaped connector; there are two circular limiting rods, and the two circular limiting rods are fixedly installed on the cross-shaped connector, and the two circular limiting rods are also slidably connected to the die-casting mold and the mold connecting seat.

[0011] In at least some embodiments, the infrared positioning part further includes: a helical spring b, an adjustable mounting bracket, and a circular limiting shaft; the helical spring b is located inside the cross-shaped plug-in seat, and the front end of the helical spring b is fixedly connected to the cross-shaped plug-in seat, and the rear end of the helical spring b contacts the mold connecting seat; the adjustable mounting bracket is slidably mounted on the positioning bracket; the circular limiting shaft is fixedly mounted on the adjustable mounting bracket.

[0012] In at least some embodiments, the infrared positioning part further includes: a limiting threaded pin and an infrared positioning component; there are four limiting threaded pins, and the four limiting threaded pins are threadedly connected to the positioning bracket, and the inner ends of the four limiting threaded pins are in contact with the adjustable mounting bracket; the infrared positioning component is fixedly installed on the adjustable mounting bracket.

[0013] In at least some embodiments, the multi-purpose limiting part includes: a rectangular limiting frame and a movable limiting rod; there are two rectangular limiting frames, and the two rectangular limiting frames are fixedly installed on the outside of two movable positioning seats; there are two movable limiting rods, and the two movable limiting rods are slidably installed on the two rectangular limiting frames; the inner ends of the two movable limiting rods are hemispherical structures, and the inner ends of the two movable limiting rods are inserted into two arc-shaped limiting grooves.

[0014] In at least some embodiments, the multi-purpose limiting part further includes: a circular support plate and a helical spring c; there are two circular support plates, which are fixedly installed on the outside of the two movable limiting rods, and the inner sides of the two circular support plates are in contact with the two movable positioning seats; there are two helical springs c, which are sleeved on the outside of the two movable limiting rods, and the two helical springs c are located between the two rectangular limiting frames and the two circular support plates.

[0015] In at least some embodiments, there are four circular magnets, and the four circular magnets are fixedly installed on the die-casting mold; the metal protective plate is slidably installed inside the die-casting mold, and two limiting circular holes are opened on the metal protective plate; the metal protective plate is the same size as the protective groove, and the two circular limiting rods are inserted into the two limiting circular holes.

[0016] In another aspect, this disclosure provides an infrared positioning method for die-casting molds of ducted fan housings, comprising the following steps: 1) Secure the two mold connecting seats to the corresponding die-casting molds with screws, so that the mold connecting seats are all in the corresponding storage cavities; 2) Insert the two metal protective plates into the corresponding die-casting molds, making the bottom of the two metal protective plates flush with the bottom of the die-casting molds; 3) Install the two cross-shaped connectors on the two circular guide posts so that the inner ends of the four movable limit rods are inserted into the corresponding arc-shaped limit grooves; 4) Adjust the position of the two adjustable mounting brackets appropriately to ensure that the two infrared positioning parts are concentric, and then tighten the corresponding limit screws; 5) The infrared positioning component on the moving mold of the die-casting mold is an infrared transmitter, and the infrared positioning component on the stationary mold of the die-casting mold is an infrared receiver, forming an infrared detection circuit to realize automatic detection of mold closing accuracy. 6) Connect the two infrared positioning components to the external detection and control system for infrared alignment calibration; monitor the infrared signal in real time during the mold closing process, and determine that the mold closing is qualified when the signal is received stably, allowing the molten metal casting to proceed.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an infrared positioning structure and method for die-casting molds of ducted fan housings. By incorporating a retractable connecting guide, a detachable infrared positioning part, and a concealable metal protective plate, it achieves rapid assembly and disassembly of the infrared positioning module, allows for horizontal placement of the mold, and prevents damage to critical components during maintenance. This significantly improves the maintenance convenience and mold-closing positioning accuracy of the die-casting mold. Specifically: 1. In this invention, the subsequent mold repair operation of the die-casting mold is not affected, the die-casting mold can be clamped at any position, and the horizontal placement of the die-casting mold is not affected; the setting of four helical springs a and two rectangular limiting frames plays an elastic positioning role for the two movable positioning seats. Furthermore, when the mold connecting seat is installed in the storage cavity, the die-casting mold can push the two movable positioning seats to slide inward a certain distance, so that the outer sides of the two rectangular limiting frames are separated from the mold connecting seat; when the mold connecting seat is not in the storage cavity, the two movable positioning seats cannot slide inward, and therefore cannot position the infrared positioning part.

[0018] 2. In this invention, the circular guide post guides the cross-shaped connector, which is beneficial for the installation and disassembly of the cross-shaped connector; the adjustable mounting bracket and the four limiting threaded pins make it easy for the staff to fine-tune the position of the infrared positioning component and ensure that the transmitter and receiver are concentric. In addition, when the cross-shaped connector is not positioned accurately, the helical spring b can push the cross-shaped connector outward a certain distance, which is helpful for the staff to find out; the setting of two arc-shaped limiting grooves and two movable limiting rods plays an elastic positioning role for the cross-shaped connector, which facilitates the quick disassembly of the infrared positioning part and is beneficial to the subsequent maintenance and repair of the die-casting mold.

[0019] 3. In this invention, when the infrared positioning part is disassembled, the metal protective plate automatically slides out of the die-casting mold under the action of gravity; this makes it convenient for workers to place the metal protective plate in the protective groove, which provides a shielding and protection effect for the connecting guide part and the multi-purpose limiting part, and avoids damage to the connecting guide part and the multi-purpose limiting part during die-casting mold maintenance or mold repair. Attached Figure Description

[0020] 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.

[0021] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0022] In the attached diagram: Figure 1 A schematic diagram of the invention and the die-casting mold is shown; Figure 2 It shows Figure 1 A schematic diagram of the bottom view structure; Figure 3 A schematic diagram of the connecting guide section is shown; Figure 4 A schematic diagram of the infrared positioning unit is shown. Figure 5 A schematic diagram of the multi-purpose limiting part is shown; Figure 6 It shows Figure 1 A schematic diagram of the structure from the perspective of the viewpoint; Figure 7 It shows Figure 6 A magnified schematic diagram of a portion of region A in the middle; Figure 8 It shows Figure 1 A schematic diagram of the longitudinal center section structure; Figure 9 It shows Figure 8 A magnified schematic diagram of a portion of region B in the middle; Figure 10 It shows Figure 1 A schematic diagram of the transverse center section structure.

[0023] List of reference numerals in the attached diagram: 100. Die-casting mold; 101. Storage cavity; 102. Protective groove; 200. Connecting guide part; 201. Mold connecting seat; 202. Circular guide post; 203. Movable positioning seat; 204. Circular mounting shaft; 205. Helical spring a; 300. Infrared positioning unit; 301. Cross-shaped connector; 3011. Arc-shaped limiting groove; 302. Positioning bracket; 303. Circular limiting rod; 304. Helical spring b; 305. Adjustable mounting bracket; 306. Circular limiting shaft; 307. Limiting threaded pin; 308. Infrared positioning component; 400. Multi-purpose limiting part; 401. Rectangular limiting frame; 402. Movable limiting rod; 403. Circular support plate; 404. Helical spring c; 500, Circular magnet; 600, Metal protective plate; 601, Limiting circular hole. Detailed Implementation

[0024] 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.

[0025] Example 1 Please refer to Figures 1 to 10 As shown, the present invention provides an infrared positioning structure for a die-casting mold of a ducted fan housing, comprising: a connecting guide portion 200, an infrared positioning portion 300, and a multi-purpose limiting portion 400; a receiving cavity 101 and a protective groove 102 are provided on the die-casting mold 100; the connecting guide portion 200 is installed on the die-casting mold 100 and is located in the receiving cavity 101; the infrared positioning portion 300 is installed on the connecting guide portion 200 and is used to ensure the die-casting accuracy of the ducted fan housing; the multi-purpose limiting portion 400 is installed on the connecting guide portion 200. On the 00, the multi-purpose limiting part 400 is used to limit the connecting guide part 200, and the multi-purpose limiting part 400 is also used to limit the infrared positioning part 300; the infrared positioning structure of the duct fan housing die casting mold provided in this embodiment can clamp the die casting mold at any position without affecting the horizontal placement of the die casting mold; it facilitates the quick disassembly of the infrared positioning part 300, which is beneficial to the subsequent maintenance and repair of the die casting mold; it provides a shielding and protective effect on the connecting guide part and the multi-purpose limiting part, avoiding damage to the connecting guide part 200 and the multi-purpose limiting part 400 during the maintenance or repair of the die casting mold.

[0026] In this embodiment of the disclosure, such as Figure 3 and Figure 5As shown, the connecting guide 200 includes: a mold connecting seat 201, a circular guide post 202, and a movable positioning seat 203; the mold connecting seat 201 is fixedly installed on the die-casting mold 100; the circular guide post 202 is fixedly installed on the front side of the mold connecting seat 201; two movable positioning seats 203 are provided, and the two movable positioning seats 203 are slidably installed on the mold connecting seat 201; the outer ends of the two movable positioning seats 203 are semi-circular structures, and the outer ends of the two movable positioning seats 203 are in contact with the die-casting mold 100; the connecting guide 200 includes: a mold connecting seat 201, a circular guide post 202, and a movable positioning seat 203; the mold connecting seat 201 is fixedly installed on the die-casting mold 100; the mold connecting seat 203 is fixedly installed on the front side of the mold connecting seat 201 ... The guide section 200 also includes: a circular mounting shaft 204 and a helical spring a205; there are four circular mounting shafts 204, and the four circular mounting shafts 204 are fixedly mounted on the mold connecting seat 201, and the four circular mounting shafts 204 are also slidably connected to two movable positioning seats 203; there are four helical springs a205, and the four helical springs a205 are sleeved on the outside of the four circular mounting shafts 204, and the four helical springs a205 are located between the mold connecting seat 201 and the two movable positioning seats 203.

[0027] The multi-purpose limiting part 400 includes: a rectangular limiting frame 401 and movable limiting rods 402; two rectangular limiting frames 401 are provided, and the two rectangular limiting frames 401 are fixedly installed on the outside of two movable positioning seats 203; two movable limiting rods 402 are provided, and the two movable limiting rods 402 are slidably installed on the two rectangular limiting frames 401; the inner ends of the two movable limiting rods 402 are hemispherical structures, and the inner ends of the two movable limiting rods 402 are inserted into two arc-shaped limiting grooves 3011; the multi-purpose limiting part 400 also... It includes: a circular support plate 403 and a helical spring c404; there are two circular support plates 403, and the two circular support plates 403 are fixedly installed on the outside of the two movable limiting rods 402, and the inner side of the two circular support plates 403 contacts the two movable positioning seats 203; there are two helical springs c404, and the two helical springs c404 are sleeved on the outside of the two movable limiting rods 402, and the two helical springs c404 are located between the two rectangular limiting frames 401 and the two circular support plates 403.

[0028] The specific functions of the connecting guide 200 and the multi-purpose limiting part 400 are as follows: Since the mold connecting seat 201 is fixedly installed on the die casting mold 100 and the mold connecting seat 201 is located in the receiving cavity 101, it does not affect the subsequent mold repair operation of the die casting mold. It can clamp the die casting mold at any position and will not affect the horizontal placement of the die casting mold. Also, since the four helical springs a205 are sleeved on the outside of the four circular mounting shafts 204 and the four helical springs a205 are located between the mold connecting seat 201 and the two movable positioning seats 203, and the two rectangular limiting frames 401 are fixedly installed on the outside of the two movable positioning seats 203, they play an elastic positioning role for the two movable positioning seats 203. Furthermore, since the two movable positioning seats 203 are slidably mounted on the mold connecting seat 201, and the outer ends of the two movable positioning seats 203 are semi-circular structures, when the mold connecting seat 201 is installed in the receiving cavity 101, the die-casting mold 100 can push the two movable positioning seats 203 to slide inward a certain distance, so that the outer sides of the two rectangular limiting frames 401 are separated from the mold connecting seat 201; when the mold connecting seat 201 is not in the receiving cavity 101, the two movable positioning seats 203 cannot slide inward, and therefore cannot position the infrared positioning part 300.

[0029] In this embodiment of the disclosure, such as Figure 4 , Figure 7 and Figure 9 As shown, the infrared positioning unit 300 includes: a cross-shaped connector 301, a positioning bracket 302, and a circular limiting rod 303; the cross-shaped connector 301 is slidably installed on the outside of the circular guide post 202, and arc-shaped limiting grooves 3011 are provided on both the upper and lower sides of the cross-shaped connector 301, and the left and right sides of the cross-shaped connector 301 are in contact with the die-casting mold 100; the positioning bracket 302 is fixedly installed on the front side of the cross-shaped connector 301; there are two circular limiting rods 303, and the two circular limiting rods 303 are fixedly installed on the cross-shaped connector 301, and the two circular limiting rods 303 are also slidably connected to the die-casting mold 100 and the mold connecting seat 201; the infrared positioning unit 300 also includes: a helical spring b304, an adjustable mounting bracket 305, and a circular limiting shaft 306; the helical spring b304 is located inside the cross-shaped connector 301, and The front end of the helical spring b304 is fixedly connected to the cross-shaped plug-in seat 301, and the rear end of the helical spring b304 contacts the mold connecting seat 201; the adjustable mounting bracket 305 is slidably mounted on the positioning bracket 302; the circular limiting shaft 306 is fixedly mounted on the adjustable mounting bracket 305; the infrared positioning part 300 also includes: limiting threaded pins 307 and infrared positioning components 308; there are four limiting threaded pins 307, and the four limiting threaded pins 307 are threadedly connected to the positioning bracket 302, and the inner ends of the four limiting threaded pins 307 are in contact with the adjustable mounting bracket 305; the infrared positioning component 308 is fixedly mounted on the adjustable mounting bracket 305, and adopts a through-beam infrared sensor, wherein the moving mold side is the infrared emitting end, the stationary mold side is the infrared receiving end, and the output end is connected to the PLC control system. When the mold closing deviation exceeds ±0.05mm, an alarm is triggered and the pouring stops.

[0030] The specific functions of the infrared positioning unit 300 are as follows: Since the circular guide post 202 is fixedly installed on the front side of the mold connecting seat 201, and the cross-shaped plug seat 301 is slidably installed on the outside of the circular guide post 202, it plays a guiding role for the cross-shaped plug seat 301, which is conducive to the installation and disassembly of the cross-shaped plug seat 301; and since the adjustable mounting bracket 305 is slidably installed on the positioning bracket 302, and the four limiting screws 307 are threadedly connected to the positioning bracket 302, and the inner ends of the four limiting screws 307 are in contact with the adjustable mounting bracket 305, it is convenient for the staff to fine-tune the position of the infrared positioning component 308 to ensure that the transmitting end and the receiving end are concentric. Among them, the infrared positioning component 308 on the casting moving mold is an infrared transmitter, and the infrared positioning component 308 on the casting stationary mold is an infrared receiver, forming an infrared detection circuit to realize automatic detection of mold closing accuracy, ensuring that there will be no deviation in the filling position of molten metal in the cavity during the casting process of the ducted fan housing, and making the wall thickness of the cast ducted fan housing more uniform. Furthermore, since the helical spring b304 is located inside the cross-shaped plug-in seat 301, and the front end of the helical spring b304 is fixedly connected to the cross-shaped plug-in seat 301, and the rear end of the helical spring b304 is in contact with the mold connecting seat 201, when the cross-shaped plug-in seat 301 is not accurately positioned, the helical spring b304 can push the cross-shaped plug-in seat 301 to move outward a certain distance, which is beneficial for the staff to discover. Also, since the upper and lower sides of the cross-shaped plug-in seat 301 are provided with arc-shaped limiting grooves 3011, and the inner ends of the two movable limiting rods 402 are hemispherical structures, and the elastic force of the two helical springs c404 is much greater than that of the helical spring b304, it plays an elastic positioning role for the cross-shaped plug-in seat 301, which facilitates the quick disassembly of the infrared positioning part 300 and is beneficial for the subsequent maintenance and repair of the die-casting mold 100.

[0031] In this embodiment of the disclosure, such as Figure 1 , Figure 8 and Figure 10 As shown, there are four circular magnets 500, and the four circular magnets 500 are fixedly installed on the die-casting mold 100; the metal protective plate 600 is slidably installed inside the die-casting mold 100, and two limiting circular holes 601 are opened on the metal protective plate 600; the metal protective plate 600 is the same size as the protective groove 102, and the two circular limiting rods 303 are inserted into the two limiting circular holes 601.

[0032] The specific functions of the four circular magnets 500 and the metal protective plate 600 are as follows: Since the two circular limiting rods 303 are fixedly installed on the cross-shaped connector 301, and the metal protective plate 600 has two limiting circular holes 601, with the two circular limiting rods 303 inserted into the two limiting circular holes 601, when the infrared positioning part 300 is disassembled, the metal protective plate 600 automatically slides out of the die-casting mold 100 under gravity; and since the four circular magnets 500 are fixedly installed on the die-casting mold 100, and the metal protective plate... The metal protective plate 600 is the same size as the protective groove 102, which makes it convenient for workers to place the metal protective plate 600 in the protective groove 102. It provides a shielding and protection effect for the connecting guide part 200 and the multi-purpose limiting part 400, preventing damage to the connecting guide part 200 and the multi-purpose limiting part 400 during the maintenance or repair of the die-casting mold 100. When the metal protective plate 600 needs to be separated from the protective groove 102, the workers insert external auxiliary tools into the two limiting round holes 601, and then separate the metal protective plate 600 from the protective groove 102.

[0033] Example 2 This invention provides an infrared positioning method for die-casting molds of ducted fan housings, comprising the following steps: 1) Fix the two mold connecting seats 201 to the corresponding die-casting molds 100 with screws so that the mold connecting seats 201 are both in the corresponding storage cavities 101; 2) Insert the two metal protective plates 600 into the corresponding die-casting mold 100, so that the bottom of the two metal protective plates 600 is flush with the bottom of the die-casting mold 100; 3) Install the two cross-shaped plug-in seats 301 on the two circular guide posts 202, so that the inner ends of the four movable limiting rods 402 are inserted into the corresponding arc-shaped limiting grooves 3011; 4) Adjust the positions of the two adjustable mounting brackets 305 appropriately to ensure that the two infrared positioning parts 308 are concentric, and then tighten the corresponding limit screws 307. 5) The infrared positioning component 308 on the moving mold of the die-casting mold 100 is an infrared transmitter, and the infrared positioning component 308 on the stationary mold of the die-casting mold 100 is an infrared receiver, forming an infrared detection circuit to realize automatic detection of mold closing accuracy. 6) Connect the two infrared positioning components 308 to the external detection and control system for infrared alignment calibration; monitor the infrared signal in real time during the mold closing process, and determine that the mold closing is qualified when the signal is received stably, allowing the molten metal casting to proceed.

[0034] When the present invention is in use, first, the two mold connection seats 201 are fixedly connected to the corresponding die-casting molds 100 through screws, so that the mold connection seats 201 are all located in the corresponding storage cavities 101; this does not affect the subsequent mold repair operation of the die-casting mold, can clamp any position of the die-casting mold, and does not affect the horizontal placement of the die-casting mold; when the two mold connection seats 201 are installed in the corresponding storage cavities 101, the die-casting mold 100 can push the corresponding two movable positioning seats 203 to slide inward for a certain distance, so that the outer sides of the two rectangular limit frames 401 are separated from the mold connection seats 201; insert the two metal protection plates 600 into the corresponding die-casting molds 100, so that the bottoms of the two metal protection plates 600 are flush with the bottom of the die-casting mold 100; install the two cross-shaped plug sockets 301 on the two circular guide posts 202, so that the inner ends of the four movable limit rods 402 are inserted into the corresponding arc-shaped limit grooves 3011; appropriately adjust the positions of the two adjustable mounting brackets 305 to ensure that the two infrared positioning parts 308 are concentric, and then tighten the corresponding limit threaded nails 307; the infrared positioning part 308 on the moving mold of the die-casting mold 100 is selected as the infrared transmitting end, and the infrared positioning part 308 on the stationary mold of the die-casting mold 100 is selected as the infrared receiving end to form an infrared detection circuit to realize automatic detection of the mold closing accuracy; connect the two infrared positioning parts 308 to an external detection control system for infrared alignment calibration; during the mold closing process, the infrared signal is monitored in real time, and when the signal is stably received, it is determined that the mold closing is qualified and metal liquid pouring is allowed; when the die-casting mold 100 needs to be maintained or repaired, the staff pulls the infrared positioning part 300 outward to separate the infrared positioning part 300 from the connection guide part 200. When the disassembly of the infrared positioning part 300 is completed, the metal protection plate 600 automatically slides out of the die-casting mold 100 under the action of gravity; then it is convenient for the staff to place the metal protection plate 600 in the protection groove 102, which plays a shielding and protection effect on the connection guide part 200 and the multi-purpose limit part 400, and avoids damaging the connection guide part 200 and the multi-purpose limit part 400 when the die-casting mold 100 is maintained or repaired; when the metal protection plate 600 needs to be separated from the protection groove 102, the staff inserts an external auxiliary tool into the two limit round holes 601, and then separates the metal protection plate 600 from the protection groove 102.

[0035] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the usual designs.

[0036] 2. Without conflict, the embodiments of the present 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. Infrared positioning structure for die-casting mold of ducted fan housing, including: Connecting guide (200), infrared positioning part (300) and multi-purpose limiting part (400); The die-casting mold (100) is provided with a receiving cavity (101) and a protective groove (102); characterized in that the connecting guide part (200) is installed on the die-casting mold (100), and the connecting guide part (200) is located in the receiving cavity (101); the connecting guide part (200) includes: a mold connecting seat (201) and a circular guide post (202); the circular guide post (202) is fixedly installed on the front side of the mold connecting seat (201); The infrared positioning part (300) is installed on the connecting guide part (200) to ensure the die-casting accuracy of the ducted fan housing; the infrared positioning part (300) includes: a cross-shaped plug-in seat (301) and a circular limiting rod (303); the cross-shaped plug-in seat (301) is slidably installed on the outside of the circular guide post (202), and arc-shaped limiting grooves (3011) are opened on both the upper and lower sides of the cross-shaped plug-in seat (301), and the left and right sides of the cross-shaped plug-in seat (301) are in contact with the die-casting mold (100); The multi-purpose limiting part (400) is installed on the connecting guide part (200) and is used to limit the connecting guide part (200) and the infrared positioning part (300).

2. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 1, characterized in that, The connecting guide (200) further includes: a movable positioning seat (203); the mold connecting seat (201) is fixedly installed on the die casting mold (100); there are two movable positioning seats (203), and the two movable positioning seats (203) are slidably installed on the mold connecting seat (201); the outer ends of the two movable positioning seats (203) are semi-circular structures, and the outer ends of the two movable positioning seats (203) are in contact with the die casting mold (100).

3. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 2, characterized in that, The connecting guide (200) further includes: a circular mounting shaft (204) and a helical spring a (205); there are four circular mounting shafts (204), and the four circular mounting shafts (204) are fixedly mounted on the mold connecting seat (201), and the four circular mounting shafts (204) are also slidably connected to two movable positioning seats (203); there are four helical springs a (205), and the four helical springs a (205) are sleeved on the outside of the four circular mounting shafts (204), and the four helical springs a (205) are located between the mold connecting seat (201) and the two movable positioning seats (203).

4. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 2, characterized in that, The infrared positioning unit (300) further includes: a positioning bracket (302); the positioning bracket (302) is fixedly installed on the front side of the cross-shaped plug-in seat (301); there are two circular limiting rods (303), and the two circular limiting rods (303) are fixedly installed on the cross-shaped plug-in seat (301), and the two circular limiting rods (303) are also slidably connected to the die-casting mold (100) and the mold connecting seat (201).

5. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 4, characterized in that, The infrared positioning unit (300) further includes: a helical spring b (304), an adjustable mounting bracket (305), and a circular limiting shaft (306); the helical spring b (304) is located inside the cross-shaped plug-in seat (301), and the front end of the helical spring b (304) is fixedly connected to the cross-shaped plug-in seat (301), and the rear end of the helical spring b (304) is in contact with the mold connecting seat (201); the adjustable mounting bracket (305) is slidably mounted on the positioning bracket (302); the circular limiting shaft (306) is fixedly mounted on the adjustable mounting bracket (305).

6. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 5, characterized in that, The infrared positioning part (300) further includes: a limiting threaded pin (307) and an infrared positioning component (308); there are four limiting threaded pins (307), and the four limiting threaded pins (307) are threadedly connected to the positioning bracket (302), and the inner ends of the four limiting threaded pins (307) are in contact with the adjustable mounting bracket (305); the infrared positioning component (308) is fixedly installed on the adjustable mounting bracket (305).

7. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 6, characterized in that, The multi-purpose limiting part (400) includes: a rectangular limiting frame (401) and a movable limiting rod (402); there are two rectangular limiting frames (401), and the two rectangular limiting frames (401) are fixedly installed on the outside of two movable positioning seats (203); there are two movable limiting rods (402), and the two movable limiting rods (402) are slidably installed on the two rectangular limiting frames (401); the inner ends of the two movable limiting rods (402) are hemispherical structures, and the inner ends of the two movable limiting rods (402) are inserted into two arc-shaped limiting grooves (3011).

8. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 7, characterized in that, The multi-purpose limiting part (400) further includes: a circular support plate (403) and a helical spring c (404); there are two circular support plates (403), and the two circular support plates (403) are fixedly installed on the outside of the two movable limiting rods (402), and the inner side of the two circular support plates (403) is in contact with the two movable positioning seats (203); there are two helical springs c (404), and the two helical springs c (404) are sleeved on the outside of the two movable limiting rods (402), and the two helical springs c (404) are located between the two rectangular limiting frames (401) and the two circular support plates (403).

9. The infrared positioning structure for the die-casting mold of the ducted fan housing according to claim 8, characterized in that, Also includes: There are four circular magnets (500), and the four circular magnets (500) are fixedly installed on the die-casting mold (100); A metal protective plate (600) is slidably installed inside the die-casting mold (100), and two limiting round holes (601) are provided on the metal protective plate (600); the metal protective plate (600) is adapted to the size of the protective groove (102), and two round limiting rods (303) are inserted into the two limiting round holes (601).

10. An infrared positioning method for a ducted fan housing die-casting mold, using the infrared positioning structure for a ducted fan housing die-casting mold as described in claim 9, characterized in that... The steps are as follows: 1) Fix the two mold connecting seats (201) to the corresponding die-casting mold (100) with screws so that the mold connecting seats (201) are both in the corresponding storage cavity (101); 2) Insert the two metal protective plates (600) into the corresponding die-casting mold (100) so that the bottom of the two metal protective plates (600) is flush with the bottom of the die-casting mold (100); 3) Install two cross-shaped plug-in seats (301) on two circular guide posts (202) so that the inner ends of the four movable limit rods (402) are inserted into the corresponding arc-shaped limit grooves (3011); 4) Adjust the position of the two adjustable mounting brackets (305) appropriately to ensure that the two infrared positioning parts (308) are concentric, and then tighten the corresponding limit screws (307). 5) The infrared positioning component (308) on the moving mold of the die-casting mold (100) is selected as an infrared transmitter, and the infrared positioning component (308) on the stationary mold of the die-casting mold (100) is selected as an infrared receiver, forming an infrared detection circuit to realize automatic detection of mold closing accuracy. 6) Connect the two infrared positioning components (308) to the external detection and control system for infrared alignment calibration; monitor the infrared signal in real time during the mold closing process, and determine that the mold closing is qualified when the signal is received stably, allowing the molten metal casting.

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