A heat treatment system for cross-flow fan blades

Abstract

The present application relates to the technical field of fan blade processing equipment, and particularly relates to a heat treatment system for cross-flow fan blades, which comprises, in sequence along the flow direction of the workpieces, a rack body transfer machine, a stacking machine, multiple groups of parallel heat treatment conveying mechanisms and a heat treatment furnace, and all electrical components are uniformly connected to a general control machine for collaborative control. The fan blade middle section is placed in the single cell of the buffer rack, and the stacking machine completes the stacking and forming of the buffer rack; the positioning transfer machine sends the regular group of the compound buffer rack into the heat treatment conveying mechanism, and multiple types of photoelectric and temperature detection modules are matched with each station to collect material and furnace temperature data in real time. The heat treatment furnace is provided with an arc-shaped guide lifting furnace door, a furnace door compression sealing structure and an anti-falling self-locking structure, and a uniform hot air duct is arranged at the bottom of the furnace to achieve global constant temperature. The whole set of equipment is fully automatic, multiple channels are parallelly processed, the material arrangement is regular, and the sealing and heat preservation performance of the furnace body is excellent. The present application solves the technical problems of low automation degree of traditional cross-flow fan blade heat treatment production lines.

Description

Technical Field

[0001] This invention relates to the field of fan blade processing equipment technology, and in particular to a heat treatment system for a cross-flow fan blade. Background Technology

[0002] After injection molding, cross-flow fan blades require constant-temperature heat treatment to eliminate internal stress and prevent deformation and cracking during subsequent use. Existing heat treatment production lines mostly employ manual loading and unloading, and a single-layer buffer rack and single-channel conveyor mode, resulting in low capacity. Manual stacking of buffer racks easily leads to inter-layer misalignment, material displacement, disordered furnace arrangement, and uneven workpiece spacing, causing large local temperature differences within the furnace. This results in inconsistent heat treatment effects for fan blades in the same batch, leading to a low product qualification rate. Conventional heat treatment furnace doors have a straight-plate lifting structure, resulting in large gaps when closed, continuous hot air leakage, frequent furnace temperature fluctuations, and poor temperature control accuracy. Furthermore, the furnace door lacks mechanical self-locking protection, posing a risk of sudden collapse in case of chain breakage. Simultaneously, each conveying, stacking, and heating device is independently controlled without unified linkage detection. Material shortages, improper stacking, and abnormal furnace temperatures cannot be detected in real time, requiring manual intervention and adjustment, leading to high labor costs and making it difficult to meet the needs of large-scale standardized continuous production. Summary of the Invention

[0003] The purpose of this invention is to propose a heat treatment system for cross-flow fan blades to solve the technical problems of low automation, misaligned material stacking, uneven furnace temperature, poor heating consistency of single batches of workpieces, furnace door leakage, and safety hazards of falling parts in traditional cross-flow fan blade heat treatment production lines.

[0004] To achieve this objective, the present invention adopts the following technical solution: A heat treatment system for cross-flow fan blades includes a frame transfer machine, a palletizer, a heat treatment conveying mechanism, and a heat treatment furnace arranged sequentially along the workpiece production flow direction. All electrical actuators of the frame transfer machine, palletizer, heat treatment conveying mechanism, and heat treatment furnace are electrically connected to a main control unit. The frame transfer machine is used to transport a fully loaded buffer frame, and the buffer frame is arrayed with multiple buffer positions for individually placing a single cross-flow fan blade. The palletizer is used to receive the fully loaded cache racks, and to lift, align, and stack the cache racks to form a duplex cache rack assembly by stacking and fixing at least two sets of fully loaded cache racks together. The palletizer is equipped with a first detection module for detecting the stacking state of the duplex cache rack assembly. Multiple heat treatment conveying mechanisms are arranged in parallel, and each heat treatment conveying mechanism has a reserved positioning transfer position at its input and output ends. A positioning transfer machine is installed at each positioning transfer position, and the conveying direction of the multiple positioning transfer machines is perpendicular to the conveying direction of the heat treatment conveying mechanism. Each positioning transfer position is equipped with a second detection module for detecting the material placement status. The multiple positioning transfer machines are used to receive the stacked duplex layer buffer rack components and arrange the multiple duplex layer buffer rack components in a single-row array structure. Each heat treatment conveying mechanism is provided with several third detection modules at intervals along its conveying direction. The third detection modules are used to detect in real time the number of rows of the duplex layer buffer rack assembly on the heat treatment conveying mechanism, the material position status and the material spacing. The heat treatment furnace is installed in the middle section of each of the heat treatment conveying mechanisms. The heat treatment furnace has two opposing through-holes along the conveying direction of the heat treatment conveying mechanism. Each of the two through-holes is equipped with a furnace door that can be opened and closed vertically. Multiple sets of temperature detection modules are evenly distributed inside the heat treatment furnace. The temperature detection modules are used to detect the furnace temperature inside the heat treatment furnace in real time. The main control unit is connected to each of the first detection module, each of the second detection module, each of the third detection module, and each of the temperature detection modules. The main control unit is used to receive the detection signals from each detection module and perform overall linkage control.

[0005] Preferably, the palletizer includes a palletizer frame, a palletizer lifting structure, a palletizer centering structure, and a palletizer conveying structure, wherein the palletizer lifting structure, the palletizer centering structure, and the palletizer conveying structure are installed on the palletizer frame from top to bottom. The palletizing lifting structure includes a palletizing hoist, a palletizing transverse transmission rod, a palletizing drive gear, a palletizing driven gear, and a palletizing closed-loop transmission chain. The palletizing hoist is fixedly installed at the middle of the top of the palletizing frame. The palletizing hoist has two independent drive ends, each fixedly connected to a transversely arranged palletizing transmission rod. A palletizing drive gear is fixedly installed at the end of each transverse transmission rod. Multiple palletizing driven gears are rotatably installed inside the palletizing frame and arranged in a four-way configuration with the palletizing drive gear. The palletizing closed-loop transmission chain meshes and is sleeved on the outside of the palletizing drive gear and all the palletizing driven gears. A clamping seat is fixedly mounted on one of the fixed links of the palletizing closed-loop transmission chain. A clamping cylinder is vertically fixedly mounted on the clamping seat. An L-shaped clamping component is fixedly mounted on the vertical extension and retraction drive end of the clamping cylinder. Two sets of symmetrically arranged L-shaped clamping components flip under the synchronous drive of the corresponding clamping cylinders to support or release the bottom of the buffer rack. The clamping seat is also provided with a palletizing lifting guide wheel, and a palletizing lifting guide rail is provided along the height direction of the palletizing frame. The palletizing lifting guide wheel is slidably installed on the palletizing lifting guide rail. Two sets of the palletizing alignment structures are symmetrically distributed on both sides of the palletizing frame. Each palletizing alignment structure includes a palletizing alignment clamp, a palletizing alignment cylinder, and a palletizing flexible block. The palletizing alignment clamp is fixedly installed on the side of the palletizing frame, and the palletizing alignment cylinder is horizontally fixedly installed on the palletizing alignment clamp. The horizontal extension and retraction drive end of the palletizing alignment cylinder is fixedly installed with the palletizing flexible block. The two symmetrically arranged palletizing flexible blocks can move closer or further apart under the synchronous drive of the corresponding palletizing alignment cylinder to clamp or release both sides of the buffer rack. The palletizing conveyor structure is located at the bottom of the palletizing machine frame. The palletizing conveyor structure includes a palletizing conveyor base plate, a palletizing conveyor drive motor, a palletizing conveyor drive gear, a palletizing conveyor transmission rod, a palletizing conveyor intermediate transmission gear, and a palletizing conveyor linkage chain. The palletizing conveyor base plate is fixed to the bottom of the palletizing machine frame. The palletizing conveyor drive motor is fixedly installed on the upper surface of the palletizing conveyor base plate. The output end of the palletizing conveyor drive motor is vertically upward and fixedly installed with the palletizing conveyor drive gear. The palletizing conveyor transmission rod is horizontally mounted above the palletizing conveyor base plate. The palletizing conveyor intermediate transmission gear is fixedly sleeved in the center of the rod body. The palletizing conveyor linkage chain is meshed and sleeved on the outside of the palletizing conveyor drive gear and the palletizing conveyor intermediate transmission gear. The palletizing conveyor transmission rod is symmetrically equipped with palletizing conveyor components at both ends. The palletizing conveyor components include a palletizing conveyor support, a palletizing conveyor clamp, a rotating gear at the end of the palletizing clamp, and a palletizing workpiece conveyor chain. Two palletizing conveyor supports are symmetrically fixed to the upper surface of the palletizing conveyor base plate, and the two palletizing conveyor supports together support two parallel palletizing conveyor clamps; palletizing clamp end rotating gears are rotatably installed between the two ends of the two palletizing clamps, and the palletizing workpiece conveying chain is meshed between the two palletizing clamp end rotating gears arranged in opposite directions; the two ends of the palletizing conveying transmission rod pass through the corresponding palletizing conveyor clamps and are fixedly connected to the center of the corresponding palletizing clamp end rotating gear. The first detection module is a height detection photoelectric sensor, and the first detection module is fixedly installed above the palletizing machine frame.

[0006] Preferably, the positioning transfer machine includes a positioning transfer bracket, a positioning lifting structure, a positioning conveying structure, and a positioning stop structure; The positioning and transfer bracket is fixedly mounted on the positioning and transfer position corresponding to the heat treatment conveying mechanism. The positioning and lifting structure includes a positioning and lifting cylinder, a positioning and lifting plate, a positioning auxiliary slide rail, and a positioning auxiliary slider. The positioning lifting cylinder is vertically fixed at the center of the positioning transfer bracket. The telescopic drive end of the positioning lifting cylinder faces upward and is fixedly connected to the center of the lower plate of the positioning lifting plate. The positioning auxiliary sliders are fixedly installed at the four corners of the lower plate of the positioning lifting plate. The four positioning auxiliary slide rails are vertically fixed at the four corners of the positioning transfer bracket. The four positioning auxiliary sliders are slidably installed on the four positioning auxiliary slide rails. Both the positioning and conveying structure and the positioning and stopping structure are installed on the upper surface of the positioning and lifting plate.

[0007] Preferably, the positioning and conveying structure includes a positioning and conveying drive motor, a positioning and conveying drive gear, a positioning and conveying transmission rod, a positioning and conveying intermediate transmission gear, and a positioning and conveying linkage chain; The positioning conveying drive motor is fixedly installed on the upper surface of the positioning lifting plate, and the positioning conveying drive gear is fixedly installed at the output end of the positioning conveying drive motor; the positioning conveying transmission rod is horizontally mounted above the positioning lifting plate, and the positioning conveying intermediate transmission gear is fixedly sleeved in the center of the rod body; the positioning conveying linkage chain is meshed and sleeved on the outside of the positioning conveying drive gear and the positioning conveying intermediate transmission gear. The positioning conveying transmission rod is symmetrically equipped with positioning conveying components at both ends. The positioning conveying components include positioning conveying supports, positioning conveying clamps, rotating gears at the ends of the positioning clamps, and positioning workpiece conveying chains. Two positioning conveying supports are symmetrically fixed to the upper surface of the positioning lifting plate, and the two positioning conveying supports together support two parallel positioning conveying clamps; the two ends of the two positioning conveying clamps are respectively rotatably installed with end gears of the positioning clamps, and the positioning workpiece conveying chain is meshed between the front and rear opposite end gears of the positioning clamps; the two ends of the positioning conveying transmission rod pass through the corresponding side of the positioning conveying clamps and are fixedly connected to the center of the corresponding end gear of the positioning clamp.

[0008] Preferably, the positioning stop structure is located at the material output end of the positioning conveying structure, and the positioning stop structure includes a positioning stop cylinder, a positioning stop lifting plate, a positioning stop auxiliary slide rail, and a positioning stop auxiliary slider; The positioning stop cylinder is vertically fixedly installed on the positioning lifting plate and located in the center between the two sets of positioning conveying components. The two sets of positioning stop auxiliary slide rails are vertically fixed on both sides of the positioning stop cylinder. The vertical drive end of the positioning stop cylinder is fixedly connected to the center of the lower plate surface of the positioning stop lifting plate; The positioning stop lifting plate has positioning stop auxiliary sliders installed at both ends of its upper plate surface. The positioning stop auxiliary slider has a positioning flexible block installed on the side facing the material input end of the positioning conveying structure. The side of the positioning stop auxiliary slider away from the material input end of the positioning conveying structure is slidably installed with the positioning stop auxiliary slide rail. The second detection module is a diffuse reflection photoelectric sensor, and the second detection module is fixedly installed on the positioning and transfer bracket.

[0009] Preferably, the heat treatment conveying mechanism includes a conveyor frame, an active conveying roller group, a driven conveying roller group, a heat treatment conveying chain, and a heat treatment conveying drive motor; the active conveying roller group and the driven conveying roller group are respectively rotatably mounted between the conveyor frame, the heat treatment conveying chain is closed-loop sleeved on the outside of the active conveying roller group and the driven conveying roller group, the heat treatment conveying drive motor is fixedly mounted at the end of the conveyor frame, and the output end of the heat treatment conveying drive motor is coaxially and fixedly connected to the active conveying roller group; The third detection module is a high-temperature resistant photoelectric sensor, and multiple third detection modules are fixedly installed at intervals along the length of the conveyor frame.

[0010] Preferably, the heat treatment furnace includes a furnace door lifting structure for driving the furnace door to vertically lift and close. The furnace body is supported by a multi-dimensional support frame, including an X-axis support along the length of the furnace body, a Z-axis support along the height of the furnace body, and a Y-axis support along the width of the furnace body. The X-axis supports are symmetrically distributed on both sides of the furnace body, the Z-axis supports are symmetrically distributed on both sides of the through opening of the furnace body, and the Y-axis supports are horizontally erected above the through opening of the furnace body. The two ends of each X-axis support and the two ends of each Y-axis support are respectively vertically and fixedly connected to the top ends of the four Z-axis supports. The furnace door is composed of multiple independent panels that are spliced ​​together in parallel. The connecting edges of two adjacent panels are fitted with a concave-convex structure. The same side of two adjacent plates is hinged to the same side of an L-shaped hinge plate; one of the two adjacent plates is fixed to the L-shaped hinge plate, and the other of the two adjacent plates is hinged to the middle of the L-shaped hinge plate; a guide shaft is rotatably mounted on the outer end of the L-shaped hinge plate. The two sets of furnace door lifting structures are respectively fixedly installed on the top of the furnace body, corresponding to the upper positions of the furnace doors on both sides; the furnace door lifting structure includes a furnace body hoist opening and closing machine, a furnace body transverse transmission rod, a furnace body drive gear, a furnace body end driven gear, a furnace body auxiliary driven gear, and a furnace body transmission chain; The furnace body winch is fixedly installed at the top center of the furnace body. The furnace body winch has two independent drive ends, and each is fixedly connected to a transverse transmission rod of the furnace body. The outer end of each transverse transmission rod of the furnace body is fixedly installed with the furnace body drive gear. Two arc-shaped guide plates with the same curvature are fixedly installed on the inner side of the support frame of the furnace body. The two arc-shaped guide plates are respectively arranged in an arc shape along the arrangement trajectory of the X-direction support and the Z-direction support. The two arc-shaped guide plates are arranged in parallel and spaced apart. A number of furnace body auxiliary driven gears are rotatably installed in the arc gap between the two arc-shaped guide plates. The furnace body end driven gears are rotatably installed at both ends of the arc gap between the two arc-shaped guide plates. The furnace body drive chain on one side is arranged along the arc-shaped trajectory of the arc-shaped guide plate on one side. The inner teeth of the furnace body drive chain mesh with the furnace body driving gear, the furnace body end driven gear, and part of the furnace body auxiliary driven gear on the corresponding side. The outer teeth of the furnace body drive chain mesh with and support part of the furnace body auxiliary driven gear. One of the fixed links of the furnace body drive chain is fixedly connected to the side of the L-shaped hinge plate located at the end through a link connector. The guide shaft slides against the arc-shaped side between the two arc-shaped guide plates, and the guide shaft can slide along the arc-shaped trajectory of the arc-shaped guide plate under the drive of the furnace body transmission chain.

[0011] Preferably, the outer edge of the plate is surrounded by a plate frame, and the edge of the through opening is surrounded by an air-filled door seal. The plate frame and the air-filled door seal abut against each other and seal under the action of the furnace door pressing structure. The furnace door clamping structure includes a furnace door clamping cylinder, a furnace door clamping strip, a hinged connecting rod, a furnace door clamping support, a furnace door guide support, and a furnace door guide column; Two furnace door clamping supports are fixedly arranged at intervals along the length of the Z-axis bracket. Each of the two furnace door clamping supports is hinged to one end of a set of hinged connecting rods. The telescopic drive end of the furnace door clamping cylinder is hinged to the middle hinge point of one set of hinged connecting rods. The tail of the furnace door clamping cylinder is hinged to the middle hinge point of another set of hinged connecting rods via a hinged rod. The other ends of both sets of hinged connecting rods are fixedly hinged to the back of the furnace door clamping strip. The furnace door clamping strip abuts against the furnace door under the drive of the furnace door clamping cylinder. Two furnace door guide supports are arranged at intervals along the length of the Z-axis bracket. A guide hole is provided inside the furnace door guide support. One end of the furnace door guide post is fixedly connected to the back of the furnace door pressing strip, and the other end of the furnace door guide post is movably inserted through the inside of the guide hole.

[0012] Preferably, the heat treatment furnace further includes a furnace door anti-fall structure to prevent the furnace door from falling suddenly due to failure; The furnace door anti-fall structure includes an anti-fall cylinder, an outer Z-direction limiting strip, and an inner Z-direction limiting strip. The outer and inner Z-direction limiting strips are arranged parallel to each other along the length of the Z-direction bracket, forming a limiting slide for the guide shaft to slide through. The ends of the outer and inner Z-direction limiting strips are connected to the ends of the two arc-shaped guide plates. The anti-fall cylinder is fixedly installed on the outer side of the outer Z-direction limiting strip. Limiting holes are correspondingly opened through the outer and inner Z-direction limiting strips. The telescopic drive end of the anti-fall cylinder is fixedly connected to a limiting post. The anti-fall cylinder can drive the limiting post to telescopically pass through the two sets of limiting holes to intercept or open the limiting slide.

[0013] Preferably, a heating fan is fixedly installed at the center of the top of the furnace body, and the air outlet of the heating fan is connected to a hot air guiding duct. The hot air guiding duct extends along the inner side wall of the furnace body to the position below the heat treatment conveying mechanism. The hot air guide duct has multiple air guide ports evenly distributed on its duct wall, and these multiple air guide ports are evenly arranged below the heat treatment conveying mechanism.

[0014] One of the above technical solutions has the following beneficial effects: (1) The entire automated process is linked, from buffer rack transfer, double-layer palletizing, material grouping to furnace heat treatment, all in one integrated operation. No manual transfer is required, which greatly reduces labor costs and increases the continuous operation capacity of the production line; the multi-channel parallel heat treatment conveying mechanism can process in parallel, significantly improving mass production efficiency.

[0015] (2) Multi-level detection modules provide full coverage, and the stacking height, material position, conveying distance and furnace temperature are monitored and fed back to the central control in real time. The material arrangement is neat and uniform, and the heating conditions of each batch of workpieces are consistent, eliminating the difference in stress treatment effect and improving the product qualification rate.

[0016] (3) The palletizer is equipped with a centering structure, and the stacked double-layer buffer racks are precisely aligned to avoid interlayer offset and scratching of the fan blades and workpieces; the positioning transfer machine is equipped with a stop structure to accurately position the material before it enters the furnace, and prevent the material from jamming or shifting.

[0017] (4) The heat treatment furnace adopts a spliced ​​arc-shaped lifting furnace door, with a furnace door pressing structure. After closing, the gap is completely sealed, reducing hot air leakage and ensuring stable and uniform furnace temperature. Hot air ducts are evenly distributed at the bottom of the furnace, providing full-area circulating heat supply and higher precision in the heat treatment process.

[0018] (5) The furnace door is equipped with an anti-fall self-locking structure. In case of failure, the furnace door is mechanically intercepted and locked to prevent the furnace door from falling and damaging the workpiece and equipment, thus eliminating potential safety hazards in production. The gear and chain drive of each mechanism of the whole machine ensures smooth operation with low jamming and a longer service life of the equipment.

[0019] (6) The central control unit centrally manages all electrical actuators, provides real-time early warning of faults, material shortages, and temperature changes, facilitates operation and maintenance management, and is suitable for long-term uninterrupted large-scale production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the furnace door opening structure in a heat treatment system with a cross-flow fan blade. Figure 2 This is a schematic diagram of the furnace door closure structure in a heat treatment system with a cross-flow fan blade. Figure 3 yes Figure 1 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of a palletizer in a heat treatment system for a cross-flow fan. Figure 5 This is a schematic diagram of the heat treatment conveying mechanism in a heat treatment system for a cross-flow fan blade. Figure 6 This is a schematic diagram showing the coordination between the stacking lifting structure and the furnace door in a heat treatment system with a cross-flow fan blade. Figure 7 This is a schematic diagram showing the coordination of a heating fan, hot air duct, and air outlet in a heat treatment system with a cross-flow fan blade. Figure 8 This is a front view of a positioning and transfer machine in a heat treatment system for a cross-flow fan. Figure 9 This is a reverse view of a positioning and transfer machine in a heat treatment system for a cross-flow fan. Figure 10 This is a schematic diagram of the buffer rack in a heat treatment system for a cross-flow fan. In the attached diagram: 3. Frame transfer machine; 4. Palletizer; 41. Palletizer frame; 42. Palletizing lifting structure; 421. Palletizing hoist; 422. Palletizing transverse transmission rod; 423. Palletizing drive gear; 424. Palletizing driven gear; 425. Palletizing closed-loop transmission chain; 426. Clamping seat; 427. Clamping cylinder; 428. L-shaped clamping component; 429. Palletizing lifting guide wheel; 420. Palletizing lifting guide rail; 43. Palletizing centering structure; 431. Palletizing centering clamp; 432. Palletizing centering cylinder; 433. Palletizing flexible block; 44. Palletizing conveying structure; 441. Palletizing conveying base plate; 442. Palletizing conveying drive motor; 443. Palletizing conveying drive gear; 444. Palletizing conveying transmission rod. 445. Palletizing conveyor intermediate transmission gear; 446. Palletizing conveyor linkage chain; 447. Palletizing conveyor support; 448. Palletizing conveyor clamp; 449. Palletizing clamp end rotating gear; 4410. Palletizing workpiece conveying chain; 5. Heat treatment conveying mechanism; 51. Conveyor frame; 52. Active conveyor roller group; 53. Driven conveyor roller group; 54. Heat treatment conveying chain; 55. Heat treatment conveying drive motor; 6. Heat treatment furnace; 60. Through opening; 61. Furnace door; 611. Plate; 612. Chain link connector; 613. L-shaped hinge plate; 614. Guide shaft; 62. Furnace door lifting structure; 621. Furnace body winch opening and closing mechanism; 622. Furnace body transverse transmission rod; 623. Furnace body drive gear; 624. Furnace body 625. End driven gear; 626. Auxiliary driven gear of furnace body; 63. Furnace body transmission chain; 64. Furnace door clamping structure; 65. Furnace door clamping cylinder; 66. Furnace door clamping strip; 67. Hinge connecting rod; 68. Furnace door clamping support; 69. Furnace door guide support; 600. Furnace door guide post; 61. Hinge rod; 62. Guide hole; 63. Furnace door anti-fall structure; 641. Anti-fall cylinder; 642. Outer Z-direction limiting strip; 643. Inner Z-direction limiting strip; 644. Limiting hole; 65. Limiting post; 66. Limiting slide; 67. X-direction bracket; 68. Z-direction bracket; 69. Y-direction bracket; 600. Arc-shaped guide plate; 61. Furnace body; 621. Heating fan; 622. Hot air guide Airflow duct; 602, air guide; 7, buffer rack; 9, positioning transfer machine; 91, positioning transfer bracket; 92, positioning lifting structure; 921, positioning lifting cylinder; 922, positioning lifting plate; 923, positioning auxiliary slide rail; 924, positioning auxiliary slider; 93, positioning conveying structure; 931, positioning conveying drive motor; 932, positioning conveying drive gear; 933, positioning conveying transmission rod; 934, positioning conveying intermediate transmission gear; 935, positioning conveying linkage chain; 936, positioning conveying support; 937, positioning conveying clamp; 938, positioning clamp end rotating gear; 939, positioning workpiece conveying chain; 94, positioning stop structure; 941, positioning stop cylinder; 942, positioning stop lifting plate;943. Positioning stop auxiliary slide rail; 944. Positioning stop auxiliary slider; 945. Positioning flexible block. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] like Figure 1-10 As shown, a heat treatment system for a cross-flow fan blade includes a frame transfer machine 3, a palletizer 4, a heat treatment conveying mechanism 5, and a heat treatment furnace 6 arranged sequentially along the workpiece production flow direction. All electrical actuators of the frame transfer machine 3, the palletizer 4, the heat treatment conveying mechanism 5, and the heat treatment furnace 6 are electrically connected to a main control unit. The frame transfer machine 3 is used to transport a fully loaded buffer frame 7, and the buffer frame 7 is arrayed with multiple buffer positions for individually placing a single cross-flow fan blade. The palletizer 4 is used to receive the fully loaded buffer rack 7, and to lift, align and stack the buffer rack 7, and to stack and fix at least two sets of fully loaded buffer racks 7 to form a duplex buffer rack 7 assembly; the palletizer 4 is provided with a first detection module for detecting the stacking and forming state of the duplex buffer rack 7 assembly. Multiple heat treatment conveying mechanisms 5 are arranged in parallel, and each heat treatment conveying mechanism 5 has a reserved positioning transfer position at its input and output ends. A positioning transfer machine 9 is installed at each positioning transfer position. The conveying direction of the multiple positioning transfer machines 9 is perpendicular to the conveying direction of the heat treatment conveying mechanism 5. A second detection module for detecting the material placement status is provided at each positioning transfer position. The multiple positioning transfer machines 9 are used to receive the stacked duplex layer buffer rack 7 components and arrange the multiple duplex layer buffer rack 7 components in a single row array structure. Each of the heat treatment conveying mechanisms 5 is provided with several third detection modules at intervals along its conveying direction. The third detection modules are used to detect in real time the number of rows of the duplex layer buffer rack 7 components on the heat treatment conveying mechanism 5, the material in-situ status, and the material spacing. The heat treatment furnace 6 is mounted on the middle section of each of the heat treatment conveying mechanisms 5. The heat treatment furnace 6 includes a furnace body 69. The furnace body 69 has two opposing through openings 60 along the conveying direction of the heat treatment conveying mechanism 5. Each of the two through openings 60 is equipped with a furnace door 61 that can be opened and closed vertically. Multiple sets of temperature detection modules are evenly distributed inside the heat treatment furnace 6. The temperature detection modules are used to detect the furnace temperature inside the heat treatment furnace 6 in real time. The main control unit is connected to each of the first detection module, each of the second detection module, each of the third detection module, and each of the temperature detection modules. The main control unit is used to receive the detection signals from each detection module and perform overall linkage control.

[0026] In this embodiment, the buffer rack 7, fully loaded with cross-flow fan blades, is conveyed forward by the frame transfer machine 3. The material enters the palletizer 4 station, where the palletizer completes the lifting, centering, and double-layer stacking of the buffer rack. The first detection module detects the stacking status, and outputs the duplex layer buffer rack assembly after passing the test. The material arrives at the positioning transfer position at the input end of the heat treatment conveying mechanism 5. The positioning transfer machine 9 transfers the material perpendicular to the conveying mechanism. The second detection module detects that the material is in place. Multiple positioning transfer machines arrange the duplex buffer rack into a single-row array and send it into multiple parallel heat treatment conveying mechanisms 5. The third detection module on the heat treatment conveying mechanism 5 continuously monitors the number of material rows and the spacing. The material is fed into the middle section heat treatment furnace 6 at a uniform speed. The furnace body is equipped with liftable furnace doors 61 at both ends of the furnace body through-hole 60. The furnace temperature detection module collects the furnace temperature in real time. All detection module signals are uniformly uploaded to the main control unit, which then controls the frame transfer machine 3, palletizer 4, positioning transfer machine 9, heat treatment conveying mechanism 5, and heat treatment furnace 6 to start, stop, adjust speed, and open and close the furnace doors synchronously, completing the automated continuous heat treatment operation.

[0027] To further explain, the palletizer 4 includes a palletizer frame 41, a palletizer lifting structure 42, a palletizer centering structure 43, and a palletizer conveying structure 44, which are installed on the palletizer frame 41 from top to bottom. The palletizing lifting structure 42 includes a palletizing hoist 421, a palletizing transverse transmission rod 422, a palletizing drive gear 423, a palletizing driven gear 424, and a palletizing closed-loop transmission chain 425. The palletizing hoist 421 is fixedly installed at the middle of the top of the palletizing frame 41. The palletizing hoist 421 has two independent drive ends, each of which is fixedly connected to a transversely arranged palletizing transmission rod 422. The end of each palletizing transverse transmission rod 422 is fixedly installed with a palletizing drive gear 423. Multiple palletizing driven gears 424 are rotatably installed on the inner side of the palletizing frame 41 and are arranged in four directions with the palletizing drive gear 423. The palletizing closed-loop transmission chain 425 is meshed and sleeved on the outer side of the palletizing drive gear 423 and all the palletizing driven gears 424. A clamping seat 426 is fixedly mounted on one of the fixed links of the palletizing closed-loop transmission chain 425. A clamping cylinder 427 is vertically fixedly mounted on the clamping seat 426. An L-shaped clamping member 428 is fixedly mounted on the vertical extension drive end of the clamping cylinder 427. The two sets of symmetrically arranged L-shaped clamping members 428 are flipped under the synchronous drive of the corresponding clamping cylinders 427 to support or release the bottom of the buffer rack 7. The clamping base 426 is also provided with a palletizing lifting guide wheel 429, and a palletizing lifting guide rail 420 is provided along the height direction of the palletizing frame 41. The palletizing lifting guide wheel 429 is slidably installed on the palletizing lifting guide rail 420. Two sets of palletizing alignment structures 43 are symmetrically distributed on both sides of the palletizing frame 41. Each palletizing alignment structure 43 includes a palletizing alignment clamp 431, a palletizing alignment cylinder 432, and a palletizing flexible block 433. The palletizing alignment clamp 431 is fixedly installed on the side of the palletizing frame 41. The palletizing alignment cylinder 432 is horizontally fixedly installed on the palletizing alignment clamp 431. The horizontal extension and retraction drive end of the palletizing alignment cylinder 432 is fixedly installed on the palletizing flexible block 433. The two symmetrically arranged palletizing flexible blocks 433 can move closer or further away from each other under the synchronous drive of the corresponding palletizing alignment cylinder 432 to clamp or release the two sides of the buffer rack 7. The palletizing conveying structure 44 is located at the bottom of the palletizing frame 41. The palletizing conveying structure 44 includes a palletizing conveying base plate 441, a palletizing conveying drive motor 442, a palletizing conveying drive gear 443, a palletizing conveying transmission rod 444, a palletizing conveying intermediate transmission gear 445, and a palletizing conveying linkage chain 446. The palletizing conveyor base plate 441 is fixed to the bottom of the palletizing frame 41. The palletizing conveyor drive motor 442 is fixedly installed on the upper surface of the palletizing conveyor base plate 441. The output end of the palletizing conveyor drive motor 442 is vertically upward and the palletizing conveyor drive gear 443 is fixedly installed thereon. The palletizing conveyor transmission rod 444 is horizontally mounted above the palletizing conveyor base plate 441. The middle transmission gear 445 is fixedly sleeved on the rod body of the palletizing conveyor 444. The palletizing conveyor linkage chain 446 is meshed and sleeved on the outside of the palletizing conveyor drive gear 443 and the palletizing conveyor intermediate transmission gear 445. The palletizing conveyor rod 444 has palletizing conveyor components symmetrically installed at both ends. The palletizing conveyor components include a palletizing conveyor support 447, a palletizing conveyor clamping plate 448, a palletizing clamping plate end rotating gear 449, and a palletizing workpiece conveying chain 4410. Two palletizing conveyor supports 447 are symmetrically fixed to the upper surface of the palletizing conveyor base plate 441. The two palletizing conveyor supports 447 together support two parallel palletizing conveyor clamps 448. Palletizing clamp end rotating gears 449 are rotatably installed between the two ends of the two palletizing clamps 448. The palletizing workpiece conveying chain 4410 is meshed between the two palletizing clamp end rotating gears 449 arranged in opposite directions. The two ends of the palletizing conveyor transmission rod 444 pass through the corresponding palletizing clamps 448 and are fixedly connected to the center of the corresponding palletizing clamp end rotating gear 449. The first detection module is a height detection photoelectric sensor, and the first detection module is fixedly installed above the palletizing frame 41.

[0028] like Figure 4 As shown, the palletizer 4 consists of a palletizer frame 41, a palletizing lifting structure 42, a palletizing centering structure 43, and a palletizing conveying structure 44. The palletizing lifting structure 42, the palletizing centering structure 43, and the palletizing conveying structure 44 are fixedly assembled on the palletizer frame 41 from top to bottom, resulting in a high degree of integration and a compact structure. The palletizing lifting structure 42 includes a palletizing hoist 421, a palletizing transverse transmission rod 422, a palletizing drive gear 423, a palletizing driven gear 424, and a palletizing closed-loop transmission chain 425. The palletizing hoist 421 is fixedly installed at the top center of the palletizing frame 41 and has two independent drive ends. Each drive end is fixedly connected to a transversely arranged palletizing transverse transmission rod 422. The outer end of each palletizing transverse transmission rod 422 is fixedly equipped with a palletizing drive gear 423. Multiple palletizing driven gears 424 are rotatably assembled on the inner side of the palletizing frame 41, forming a four-way symmetrical arrangement with the palletizing drive gear 423. The palletizing closed-loop transmission chain 425 is meshed and sleeved on the outer side of all drive and driven gears, forming a closed-loop synchronous transmission structure with high transmission synchronization and stable operation.

[0029] A clamping seat 426 is fixedly mounted on the fixed link of the palletizing closed-loop drive chain 425. Through the guiding sliding cooperation of the palletizing lifting guide wheel 429 and the palletizing lifting guide rail 420, the palletizing hoist 421 drives the clamping seat 426 and the structure located on it to achieve stable lifting and lowering. A clamping cylinder 427 is vertically fixedly mounted on the clamping seat 426. An L-shaped clamping component 428 is fixedly connected to the vertical extension drive end of the clamping cylinder 427. Two sets of symmetrically arranged L-shaped clamping components 428 perform a flipping motion under the synchronous drive of the clamping cylinder 427. By flipping inward to fit against the bottom of the buffer rack 7, they achieve support and load-bearing; by flipping outward to detach from the buffer rack 7, they achieve release and unloading, stably completing the switching between supporting and releasing the buffer rack 7.

[0030] The palletizing centering structure 43 is symmetrically arranged on both sides of the palletizing frame 41, and consists of a palletizing centering clamp 431, a palletizing centering cylinder 432, and a palletizing flexible block 433. The horizontal extension and retraction drive end of the palletizing centering cylinder 432 drives the palletizing flexible block 433 to clamp in both directions, realizing the centering and correction of the buffer rack 7 and ensuring the precise alignment of the upper and lower layers of buffer rack 7. The palletizing conveying structure 44 is located at the bottom of the equipment and consists of a palletizing conveying base plate 441, a palletizing conveying drive motor 442, a palletizing conveying drive gear 443, a palletizing conveying transmission rod 444, a palletizing conveying intermediate transmission gear 445, a palletizing conveying linkage chain 446, and symmetrical palletizing conveying components on both sides. Through gear and chain linkage transmission, the buffer rack 7 can be smoothly fed and discharged. The first detection module height detection photoelectric sensor fixed above the palletizing frame 41 detects the stacking height in real time, accurately determines whether the forming of the duplex layer buffer rack 7 components is qualified, and realizes closed-loop detection of the stacking process.

[0031] To further explain, the positioning transfer machine 9 includes a positioning transfer bracket 91, a positioning lifting structure 92, a positioning conveying structure 93, and a positioning stop structure 94; The positioning and transfer bracket 91 is fixedly mounted on the positioning and transfer position corresponding to the heat treatment conveying mechanism 5. The positioning and lifting structure 92 includes a positioning and lifting cylinder 921, a positioning and lifting plate 922, a positioning auxiliary slide rail 923, and a positioning auxiliary slider 924. The positioning lifting cylinder 921 is vertically fixed at the center of the positioning transfer bracket 91. The telescopic drive end of the positioning lifting cylinder 921 is set upward and fixedly connected to the center of the lower plate surface of the positioning lifting plate 922. The positioning auxiliary sliders 924 are fixedly installed at the four corners of the lower plate surface of the positioning lifting plate 922. The four positioning auxiliary slide rails 923 are vertically fixed at the four corners of the positioning transfer bracket 91. The four positioning auxiliary sliders 924 are slidably installed on the four positioning auxiliary slide rails 923 one by one. The positioning and conveying structure 93 and the positioning and stopping structure 94 are both installed on the upper surface of the positioning and lifting plate 922.

[0032] like Figure 8-9 As shown, the positioning transfer machine 9 is fixedly mounted on the positioning transfer position of the heat treatment conveying mechanism 5. The whole is composed of a positioning transfer bracket 91, a positioning lifting structure 92, a positioning conveying structure 93, and a positioning stop structure 94. Multiple positioning transfer machines 9 work together to realize the grouping and synchronous transfer of material arrays. Among them, the positioning lifting structure 92 is composed of a positioning lifting cylinder 921, a positioning lifting plate 922, a positioning auxiliary slide rail 923, and a positioning auxiliary slider 924. The positioning lifting cylinder 921 is vertically fixed to the center of the positioning transfer bracket 91, and the drive end is fixedly connected to the positioning lifting plate 922. The positioning lifting plate 922 is equipped with positioning auxiliary sliders 924 at the four corners, which slide in cooperation with the positioning auxiliary slide rails 923 arranged at the four corners to ensure that the vertical lifting process is stable without shaking or deviation, and accurately matches the conveying height of the heat treatment conveying mechanism 5.

[0033] To further explain, the positioning and conveying structure 93 includes a positioning and conveying drive motor 931, a positioning and conveying drive gear 932, a positioning and conveying transmission rod 933, a positioning and conveying intermediate transmission gear 934, and a positioning and conveying linkage chain 935; The positioning conveying drive motor 931 is fixedly installed on the upper surface of the positioning lifting plate 922, and the positioning conveying drive gear 932 is fixedly installed at the output end of the positioning conveying drive motor 931; the positioning conveying transmission rod 933 is horizontally mounted above the positioning lifting plate 922, and the positioning conveying intermediate transmission gear 934 is fixedly sleeved in the center of the rod body of the positioning conveying transmission rod 933; the positioning conveying linkage chain 935 is meshed and sleeved on the outside of the positioning conveying drive gear 932 and the positioning conveying intermediate transmission gear 934. The positioning and conveying transmission rod 933 is symmetrically equipped with positioning and conveying components at both ends. The positioning and conveying components include a positioning and conveying support 936, a positioning and conveying clamp 937, a rotating gear 938 at the end of the positioning clamp 937, and a positioning workpiece conveying chain 939. Two positioning conveying supports 936 are symmetrically fixed to the upper surface of the positioning lifting plate 922. The two positioning conveying supports 936 together support two parallel positioning conveying clamps 937. The two ends of the two positioning conveying clamps 937 are respectively rotatably installed with positioning clamp end rotating gears 938. The positioning workpiece conveying chain 939 is meshed between the front and rear opposite positioning clamp end rotating gears 938. The two ends of the positioning conveying transmission rod 933 pass through the corresponding side of the positioning conveying clamps 937 and are fixedly connected to the center of the corresponding positioning clamp end rotating gear 938.

[0034] like Figure 8-9 As shown, the positioning and conveying structure 93 is mounted on the upper surface of the positioning and lifting plate 922. It consists of a positioning and conveying drive motor 931, a positioning and conveying drive gear 932, a positioning and conveying transmission rod 933, a positioning and conveying intermediate transmission gear 934, a positioning and conveying linkage chain 935, and symmetrical positioning and conveying components on both sides. Through gear and chain linkage transmission, it realizes stable material conveying.

[0035] To further explain, the positioning stop structure 94 is located at the material output end of the positioning conveying structure 93. The positioning stop structure 94 includes a positioning stop cylinder 941, a positioning stop lifting plate 942, a positioning stop auxiliary slide rail 943, and a positioning stop auxiliary slider 944. The positioning stop cylinder 941 is vertically fixed on the positioning lifting plate 922 and is located in the center between the two sets of positioning conveying components. The two sets of positioning stop auxiliary slide rails 943 are vertically fixed on both sides of the positioning stop cylinder 941. The vertical drive end of the positioning stop cylinder 941 is fixedly connected to the center of the lower plate surface of the positioning stop lifting plate 942. The positioning stop lifting plate 942 has positioning stop auxiliary sliders 944 installed at both ends of its upper plate surface. The positioning stop auxiliary slider 944 is installed with the positioning flexible block 945 on the side facing the material input end of the positioning conveying structure 93. The side of the positioning stop auxiliary slider 944 away from the material input end of the positioning conveying structure 93 is slidably installed with the positioning stop auxiliary slide rail 943. The second detection module is a diffuse reflection photoelectric sensor, and the second detection module is fixedly installed on the positioning and transfer bracket 91.

[0036] like Figure 8-9 As shown, the positioning stop structure 94 is located at the material output end of the positioning conveyor structure 93. It consists of a positioning stop cylinder 941, a positioning stop lifting plate 942, a positioning stop auxiliary slide rail 943, a positioning stop auxiliary slider 944, and a positioning flexible block 945. It can vertically lift and stop materials, and works with the positioning flexible block 945 to achieve precise alignment and fixed-point stopping of the duplex layer buffer rack 7 components. The second detection module is fixedly assembled on the positioning transfer bracket 91 to detect the material status at the workstation in real time, providing accurate signal basis for multi-machine synchronous grouping and synchronous transfer, and completely solving the defects of scattered material arrangement and inconsistent furnace entry rhythm in traditional methods.

[0037] To further explain, the heat treatment conveying mechanism 5 includes a conveyor frame 51, an active conveying roller group 52, a driven conveying roller group 53, a heat treatment conveying chain 54, and a heat treatment conveying drive motor 55; the active conveying roller group 52 and the driven conveying roller group 53 are respectively rotatably mounted between the conveyor frame 51, the heat treatment conveying chain 54 is closed-loop sleeved on the outside of the active conveying roller group 52 and the driven conveying roller group 53, the heat treatment conveying drive motor 55 is fixedly mounted at the end of the conveyor frame 51, and the output end of the heat treatment conveying drive motor 55 is coaxially and fixedly connected to the active conveying roller group 52; The third detection module is a high-temperature resistant photoelectric sensor, and multiple third detection modules are fixedly installed at intervals along the length of the conveyor frame 51.

[0038] like Figure 5As shown, multiple heat treatment conveying mechanisms 5 are arranged in parallel to each other, enabling parallel heat treatment of multiple batches of workpieces and significantly increasing mass production capacity. Each heat treatment conveying mechanism 5 consists of a conveyor frame 51, an active conveying roller group 52, a driven conveying roller group 53, a heat treatment conveying chain 54, and a heat treatment conveying drive motor 55. The active conveying roller group 52 and the driven conveying roller group 53 are rotatably mounted at both ends of the conveyor frame 51. The heat treatment conveying chain 54 is closed-loop sleeved on the outside of the roller group. The heat treatment conveying drive motor 55 is coaxially and fixedly connected to the active conveying roller group 52, providing stable power for the overall conveying. The conveying structure of the roller group and the chain provides uniform transmission and smooth operation, effectively avoiding shaking, deviation, and jamming during material conveying, and ensuring the uniform posture of the entire batch of materials.

[0039] Multiple sets of third detection modules are fixedly installed at intervals along the length of the conveyor frame 51. The third detection modules use high-temperature resistant photoelectric sensors, which can withstand the high-temperature radiation environment of the furnace opening for a long time and have strong working stability. The third detection modules detect the material position, number of rows, and material spacing of the duplex layer buffer rack 7 components on the heat treatment conveyor mechanism 5 in real time, and continuously feed the real-time detection data back to the main control unit. The main control unit accurately controls the total amount of material entering the furnace based on the detection data, so as to achieve quantitative, orderly and uniform entry into the furnace. This ensures that the number of workpieces entering the furnace and the arrangement spacing of each batch are completely uniform, and that the heat treatment heating conditions and holding time of each batch of workpieces are completely consistent, which greatly improves the consistency of product batch processing.

[0040] To further explain, the heat treatment furnace 6 includes a furnace door lifting structure 62 for driving the furnace door 61 to move vertically up and down to open and close. The furnace body 69 is supported by a multi-dimensional support frame, including X-axis supports 65 arranged along the length of the furnace body 69, Z-axis supports 66 arranged along the height of the furnace body 69, and Y-axis supports 67 arranged along the width of the furnace body 69. The X-axis supports 65 are symmetrically distributed on both sides of the furnace body 69, the Z-axis supports 66 are symmetrically distributed on both sides of the through opening 60 of the furnace body 69, and the Y-axis supports 67 are horizontally erected above the through opening 60 of the furnace body 69. The two ends of each X-axis support 65 and the two ends of each Y-axis support 67 are respectively vertically and fixedly connected to the top ends of the four Z-axis supports 66. The furnace door 61 is composed of multiple independent plates 611 arranged in parallel and side by side, and the connecting edges of two adjacent plates 611 are fitted with a concave-convex fitting structure. Two adjacent plates 611 are hinged together on the same side of an L-shaped hinge plate 613 via a link connector 612; one of the two adjacent plates 611 is fixed to the L-shaped hinge plate 613, and the other of the two adjacent plates 611 is hinged to the middle of the L-shaped hinge plate 613 via the link connector 612; a guide shaft 614 is rotatably mounted on the outer end of the L-shaped hinge plate 613. The two sets of furnace door lifting structures 62 are respectively fixedly installed on the top of the furnace body 69, corresponding to the positions above the furnace doors 61 on both sides; the furnace door lifting structure 62 includes a furnace body hoist opening and closing machine 621, a furnace body transverse transmission rod 622, a furnace body drive gear 623, a furnace body end driven gear 624, a furnace body auxiliary driven gear 625, and a furnace body transmission chain 626; The furnace body hoisting and opening mechanism 621 is fixedly installed at the top center of the furnace body 69. The furnace body hoisting and opening mechanism 621 is provided with two sets of independent drive ends, and each is fixedly connected to a horizontally arranged furnace body transverse transmission rod 622. The furnace body drive gear 623 is fixedly installed at the outer end of each furnace body transverse transmission rod 622. Two arc-shaped guide plates 68 with the same curvature are fixedly installed on the inner side of the support frame of the furnace body 69. The two arc-shaped guide plates 68 are respectively arranged in an arc along the arrangement trajectory of the X-direction support 65 and the Z-direction support 66. The two arc-shaped guide plates 68 are arranged in parallel and spaced apart. A plurality of furnace body auxiliary driven gears 625 are rotatably installed in the arc gap between the two arc-shaped guide plates 68. The furnace body end driven gears 624 are rotatably installed at both ends of the arc gap between the two arc-shaped guide plates 68. The furnace body drive chain 626 on one side is arranged along the arc-shaped trajectory of the arc-shaped guide plate 68 on one side. The inner teeth of the furnace body drive chain 626 mesh with the furnace body driving gear 623, the furnace body end driven gear 624 and part of the furnace body auxiliary driven gear 625 on the corresponding side, respectively. The outer teeth of the furnace body drive chain 626 mesh with part of the furnace body auxiliary driven gear 625 for support. One of the fixed links of the furnace body drive chain 626 is fixedly connected to the L-shaped hinge plate 613 located at the end through the link connector 612. The guide shaft 614 slides against the arc-shaped side between the two arc-shaped guide plates 68. Driven by the furnace body transmission chain 626, the guide shaft 614 can slide along the arc-shaped trajectory of the arc-shaped guide plate 68.

[0041] like Figure 3 , 6As shown, the heat treatment furnace 6 is the core equipment for workpiece shaping in this invention, mainly comprising a furnace body 69 and a furnace door lifting structure 62 that drives the furnace door 61 to vertically lift and close. The furnace body 69 is constructed with a multi-dimensional support frame, consisting of X-axis brackets 65, Z-axis brackets 66, and Y-axis brackets 67 that are perpendicularly fixed and spliced ​​together. The overall frame structure has high strength and strong resistance to deformation at high temperatures, making it suitable for long-term continuous high-temperature operation. It also provides an installation reference for the furnace door lifting structure 62.

[0042] The furnace body 69 has a bidirectional through-hole 60 along the conveying direction of the heat treatment conveying mechanism 5. Each through-hole 60 is fitted with a vertically opening furnace door 61 to accommodate automated continuous feeding and discharging operations. The furnace door 61 is composed of multiple independent plates 611 arranged in parallel. The mating edges of adjacent plates 611 use a concave-convex fit structure, resulting in good sealing and strong opening and closing compatibility. Adjacent plates 611 are hinged together to an L-shaped hinge plate 613. A guide shaft 614 is rotatably mounted at the outer end of the L-shaped hinge plate 613 to cooperate with the arc-shaped guide plate 68 described below to achieve smooth guiding and lifting of the furnace door 61, reducing the storage space required for the furnace door.

[0043] The furnace door lifting structure 62 is symmetrically arranged corresponding to the two furnace doors 61. It consists of a furnace body hoist opening and closing mechanism 621, a furnace body transverse transmission rod 622, a furnace body drive gear 623, a furnace body end driven gear 624, a furnace body auxiliary driven gear 625, a furnace body transmission chain 626, and an arc-shaped guide plate 68. The furnace body hoist opening and closing mechanism 621 drives the furnace body transverse transmission rod 622 to rotate through double-end drive. Through gear chain meshing, it drives the furnace body transmission chain 626 to move along the arc-shaped trajectory of the arc-shaped guide plate 68, thereby driving the guide shaft 614 of the furnace door 61 to slide along the arc-shaped guide trajectory, so as to realize the synchronous, smooth, and jam-free vertical opening and closing of the two furnace doors 61.

[0044] To further explain, the outer edge of the plate 611 is surrounded by a plate frame 615, and the edge of the through opening 60 is surrounded by an inflation door seal 616. The plate frame 615 and the inflation door seal 616 abut and seal against each other under the action of the furnace door pressing structure 63. The furnace door clamping structure 63 includes a furnace door clamping cylinder 631, a furnace door clamping strip 632, a hinged connecting rod 633, a furnace door clamping support 634, a furnace door guide support 635, and a furnace door guide column 636. Two furnace door clamping supports 634 are fixedly arranged at intervals along the length of the Z-axis bracket 66. Each of the two furnace door clamping supports 634 is hinged to one end of a set of hinged connecting rods 633. The telescopic drive end of the furnace door clamping cylinder 631 is hinged to the middle hinge point of one set of hinged connecting rods 633. The tail of the cylinder body of the furnace door clamping cylinder 631 is hinged to the middle hinge point of another set of hinged connecting rods 633 via a hinged rod 637. The other ends of both sets of hinged connecting rods 633 are fixedly hinged to the back of the furnace door clamping strip 632 and abut against the furnace door 61 under the drive of the furnace door clamping cylinder 631. Two furnace door guide supports 635 are arranged at intervals along the length of the Z-axis bracket 66. A guide hole 638 is provided inside the furnace door guide support 635. One end of the furnace door guide post 636 is fixedly connected to the back of the furnace door pressing strip 632, and the other end of the furnace door guide post 636 is movably inserted through the inside of the guide hole 638.

[0045] like Figure 3 , 6 As shown, the furnace door clamping structure 63 is assembled on the side of the furnace door 61 corresponding to the Z-direction bracket 66. It consists of a furnace door clamping cylinder 631, a furnace door clamping strip 632, a hinged connecting rod 633, a furnace door clamping support 634, a furnace door guide support 635, a furnace door guide column 636, and a hinged rod 637. The whole structure adopts the multi-link lever transmission principle, which can accurately press and seal the surface of the furnace door 61 after the furnace door 61 is completely closed. The furnace door guide support 635 and the furnace door guide column 636 constitute a complete linear guide and limiting mechanism. The two sets of furnace door guide supports 635 are fixed on the Z-axis bracket 66 and arranged parallel to the pressing movement direction of the furnace door pressing strip 632. One end of the furnace door guide column 636 is fixed to the back of the furnace door pressing strip 632, and the other end slides through the guide hole 638 of the furnace door guide support 635. During the entire process of the furnace door pressing cylinder 631 driving the hinged connecting rod 633 to swing like a lever and drive the furnace door pressing strip 632 to extend and retract back and forth to press, the furnace door guide column 636 always slides in a high-precision linear manner along the guide hole 638, providing rigid guidance and displacement limiting for the pressing action of the furnace door pressing strip 632. This can strictly limit the up and down movement, left and right offset and angle deflection of the furnace door pressing strip 632, avoiding problems such as pressing trajectory deviation, pressing force skew and local false pressure caused by the multi-link transmission gap. This guiding structure ensures that the furnace door clamping strip 632 is precisely fitted and pressed in a horizontal posture perpendicular to the furnace door 61 throughout the entire process. This ensures that the entire surface of the furnace door 61 is subjected to uniform force and fits tightly, completely sealing the assembly gaps at the furnace opening. It also prevents the leakage of high-temperature hot air, localized loss of furnace temperature, and uneven temperature inside the furnace, thus stabilizing the heat treatment environment inside the furnace body 69, which is sealed, constant in temperature, and uniformly heated. At the same time, it effectively reduces the wear of the linkage mechanism due to long-term reciprocating motion, improving the clamping accuracy and operational durability of the equipment.

[0046] Furthermore, the heat treatment furnace 6 also includes a furnace door anti-fall structure 64 to prevent the furnace door 61 from falling suddenly due to malfunction. The furnace door anti-fall structure 64 includes an anti-fall cylinder 641, an outer Z-direction limiting strip 642, and an inner Z-direction limiting strip 643. The outer Z-direction limiting strip 642 and the inner Z-direction limiting strip 643 are arranged parallel to each other along the length direction of the Z-direction bracket 66, and a limiting slide 646 is formed between them for the guide shaft 614 to slide through. The ends of the outer Z-direction limiting strip 642 and the inner Z-direction limiting strip 643 are connected to the two arc-shaped guide plates 68. The end is connected accordingly; the anti-fall cylinder 641 is fixedly installed on the outer side of the outer Z-direction limiting strip 642, and the outer Z-direction limiting strip 642 and the inner Z-direction limiting strip 643 are respectively provided with limiting holes 644. The telescopic drive end of the anti-fall cylinder 641 is fixedly connected to the limiting post 645. The anti-fall cylinder 641 can drive the limiting post 645 to telescopically pass through the two sets of limiting holes 644 to intercept or open the limiting slide 646. like Figure 3 As shown, the furnace door anti-fall structure 64 consists of an anti-fall cylinder 641, an outer Z-direction limiting strip 642, an inner Z-direction limiting strip 643, a limiting hole 644, a limiting post 645, and a limiting slide 646. The outer Z-direction limiting strip 642 and the inner Z-direction limiting strip 643 are arranged in parallel and spaced apart to form the limiting slide 646, which allows the guide shaft 614 to slide through. The anti-fall cylinder 641 can drive the limiting post 645 to extend and retract into the limiting hole 644, intercepting the limiting slide 646. When the furnace door 61 is open, it achieves mechanical self-locking, effectively preventing the furnace door 61 from malfunctioning and falling suddenly, avoiding workpiece damage, equipment damage, and safety accidents.

[0047] To further explain, a heating fan 600 is fixedly installed at the center of the top of the furnace body 69. The air outlet of the heating fan 600 is connected to a hot air guiding duct 601, which extends along the inner side wall of the furnace body 69 to the position below the heat treatment conveying mechanism 5. The hot air guide duct 601 has a plurality of air guide ports 602 evenly distributed on the duct wall, and the plurality of air guide ports 602 are evenly arranged below the heat treatment conveying mechanism 5.

[0048] like Figure 7As shown, a heating fan 600 is fixedly mounted at the top center of the furnace body 69. The outlet of the heating fan 600 is connected to the hot air guide duct 601. The hot air guide duct 601 extends along the inner side wall of the furnace body to below the heat treatment conveying mechanism 5. Multiple sets of air guides 602 are evenly distributed on the duct wall to form a top-down, uniform hot air circulation system. Multiple sets of high-precision temperature sensors are evenly distributed throughout the interior of the furnace body 69 to collect the temperature of different areas inside the furnace in real time and feed it back to the main control unit to achieve closed-loop precise temperature control and ensure that the heat treatment process parameters are accurately implemented.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A heat treatment system for a cross-flow fan blade, characterized in that, The system includes a frame transfer machine (3), a palletizer (4), a heat treatment conveying mechanism (5), and a heat treatment furnace (6) arranged sequentially along the workpiece production flow. All electrical actuators of the frame transfer machine (3), the palletizer (4), the heat treatment conveying mechanism (5), and the heat treatment furnace (6) are electrically connected to a main control unit. The frame transfer machine (3) is used to transport a fully loaded buffer frame (7), and the buffer frame (7) is arrayed with multiple buffer positions for placing a single cross-flow fan blade. The palletizer (4) is used to receive the fully loaded cache rack (7), and to lift, align and stack the cache rack (7) to form a duplex cache rack (7) assembly by stacking and fixing at least two fully loaded cache racks (7) together. The palletizer (4) is equipped with a first detection module for detecting the stacking state of the duplex cache rack (7) assembly. Multiple heat treatment conveying mechanisms (5) are arranged in parallel, and each heat treatment conveying mechanism (5) has a reserved positioning transfer position at its input and output ends. The positioning transfer position is equipped with a positioning transfer machine (9). The conveying direction of the multiple positioning transfer machines (9) is perpendicular to the conveying direction of the heat treatment conveying mechanism (5). Each positioning transfer position is equipped with a second detection module for detecting the material placement status. The multiple positioning transfer machines (9) are used to receive the stacked duplex layer buffer rack (7) components and arrange the multiple duplex layer buffer rack (7) components in a single row array structure. Each heat treatment conveying mechanism (5) is provided with several third detection modules at intervals along its conveying direction. The third detection modules are used to detect in real time the number of rows of the duplex layer buffer rack (7) components on the heat treatment conveying mechanism (5), the material in-situ status and the material spacing. The heat treatment furnace (6) is mounted on the middle section of each heat treatment conveying mechanism (5). The heat treatment furnace (6) includes a furnace body (69). The furnace body (69) has two through-holes (60) that are opposite to each other along the conveying direction of the heat treatment conveying mechanism (5). Each of the two through-holes (60) is equipped with a furnace door (61) that can be opened and closed vertically. Multiple temperature detection modules are evenly arranged inside the heat treatment furnace (6). The temperature detection modules are used to detect the furnace temperature inside the heat treatment furnace (6) in real time. The main control unit is connected to each of the first detection module, each of the second detection module, each of the third detection module, and each of the temperature detection modules. The main control unit is used to receive the detection signals from each detection module and perform overall linkage control.

2. The heat treatment system for a cross-flow fan blade according to claim 1, characterized in that, The palletizer (4) includes a palletizer frame (41), a palletizing lifting structure (42), a palletizing centering structure (43), and a palletizing conveying structure (44). The palletizing lifting structure (42), the palletizing centering structure (43), and the palletizing conveying structure (44) are installed on the palletizer frame (41) from top to bottom. The palletizing lifting structure (42) includes a palletizing hoist (421), a palletizing transverse transmission rod (422), a palletizing drive gear (423), a palletizing driven gear (424), and a palletizing closed-loop transmission chain (425). The palletizing hoist (421) is fixedly installed at the middle of the top of the palletizing frame (41). The palletizing hoist (421) is provided with two independent drive ends, and each is fixedly connected to a transversely arranged palletizing transmission rod (422). The end of each palletizing transverse transmission rod (422) is fixedly installed with a palletizing drive gear (423). Multiple palletizing driven gears (424) are rotatably installed on the inner side of the palletizing frame (41) and form a four-way arrangement with the palletizing drive gear (423). The palletizing closed-loop transmission chain (425) is meshed and sleeved on the outer side of the palletizing drive gear (423) and all the palletizing driven gears (424). A clamping seat (426) is fixedly mounted on one of the fixed links of the palletizing closed-loop transmission chain (425). A clamping cylinder (427) is vertically fixedly mounted on the clamping seat (426). An L-shaped clamping member (428) is fixedly mounted on the vertical extension drive end of the clamping cylinder (427). The two sets of symmetrically arranged L-shaped clamping members (428) are flipped under the synchronous drive of the corresponding clamping cylinder (427) to support or release the bottom of the buffer rack (7). The clamping base (426) is also provided with a palletizing lifting guide wheel (429), and a palletizing lifting guide rail (420) is provided along the height direction of the palletizing frame (41). The palletizing lifting guide wheel (429) is slidably installed on the palletizing lifting guide rail (420). Two sets of the palletizing centering structures (43) are symmetrically distributed on both sides of the palletizing frame (41); the palletizing centering structure (43) includes a palletizing centering clamp (431), a palletizing centering cylinder (432) and a palletizing flexible block (433); the palletizing centering clamp (431) is fixedly installed on the side of the palletizing frame (41), the palletizing centering cylinder (432) is horizontally fixedly installed on the palletizing centering clamp (431), and the palletizing flexible block (433) is fixedly installed on the horizontal extension drive end of the palletizing centering cylinder (432); the two symmetrically arranged palletizing flexible blocks (433) can move closer or further away from each other under the synchronous drive of the corresponding palletizing centering cylinder (432) to clamp or release the two sides of the buffer rack (7); The palletizing conveying structure (44) is located at the bottom of the palletizing frame (41). The palletizing conveying structure (44) includes a palletizing conveying base plate (441), a palletizing conveying drive motor (442), a palletizing conveying drive gear (443), a palletizing conveying transmission rod (444), a palletizing conveying intermediate transmission gear (445), and a palletizing conveying linkage chain (446). The palletizing conveyor base plate (441) is fixed to the bottom of the palletizing frame (41), the palletizing conveyor drive motor (442) is fixedly installed on the upper surface of the palletizing conveyor base plate (441), the output end of the palletizing conveyor drive motor (442) is vertically upward and the palletizing conveyor drive gear (443) is fixedly installed thereon; the palletizing conveyor transmission rod (444) is horizontally mounted above the palletizing conveyor base plate (441), the middle transmission gear (445) of the palletizing conveyor is fixedly sleeved in the middle position of the rod body of the palletizing conveyor (444), and the palletizing conveyor linkage chain (446) is meshed and sleeved on the outside of the palletizing conveyor drive gear (443) and the palletizing conveyor middle transmission gear (445); The palletizing conveyor rod (444) has palletizing conveyor components symmetrically installed at both ends. The palletizing conveyor components include a palletizing conveyor support (447), a palletizing conveyor clamp (448), a palletizing clamp end rotating gear (449), and a palletizing workpiece conveyor chain (4410). Two palletizing conveyor supports (447) are symmetrically fixed to the upper surface of the palletizing conveyor base plate (441). The two palletizing conveyor supports (447) together support two parallel palletizing conveyor clamps (448). The palletizing clamp end rotating gears (449) are rotatably installed between the two ends of the two palletizing clamps (448). The palletizing workpiece conveying chain (4410) is meshed between the two palletizing clamp end rotating gears (449) arranged in opposite directions. The two ends of the palletizing conveyor transmission rod (444) pass through the corresponding palletizing clamps (448) and are fixedly connected to the center of the corresponding palletizing clamp end rotating gear (449). The first detection module is a height detection photoelectric sensor, and the first detection module is fixedly installed above the palletizing frame (41).

3. The heat treatment system for a cross-flow fan blade according to claim 1, characterized in that, The positioning transfer machine (9) includes a positioning transfer bracket (91), a positioning lifting structure (92), a positioning conveying structure (93), and a positioning stop structure (94). The positioning and transfer bracket (91) is fixedly mounted on the positioning and transfer position corresponding to the heat treatment conveying mechanism (5). The positioning and lifting structure (92) includes a positioning and lifting cylinder (921), a positioning and lifting plate (922), a positioning auxiliary slide rail (923), and a positioning auxiliary slider (924). The positioning lifting cylinder (921) is vertically fixed at the center of the positioning transfer bracket (91). The telescopic drive end of the positioning lifting cylinder (921) is set upward and fixedly connected to the center of the lower plate surface of the positioning lifting plate (922). The positioning auxiliary sliders (924) are fixedly installed at the four corners of the lower plate surface of the positioning lifting plate (922). The four positioning auxiliary slide rails (923) are vertically fixed at the four corners of the positioning transfer bracket (91). The four positioning auxiliary sliders (924) are slidably installed on the four positioning auxiliary slide rails (923) one by one. The positioning and conveying structure (93) and the positioning and stopping structure (94) are both installed on the upper surface of the positioning and lifting plate (922).

4. The heat treatment system for a cross-flow fan blade according to claim 3, characterized in that, The positioning and conveying structure (93) includes a positioning and conveying drive motor (931), a positioning and conveying drive gear (932), a positioning and conveying transmission rod (933), a positioning and conveying intermediate transmission gear (934), and a positioning and conveying linkage chain (935). The positioning conveying drive motor (931) is fixedly installed on the upper plate of the positioning lifting plate (922), and the positioning conveying drive gear (932) is fixedly installed at the output end of the positioning conveying drive motor (931); the positioning conveying transmission rod (933) is horizontally mounted above the positioning lifting plate (922), and the positioning conveying intermediate transmission gear (934) is fixedly sleeved in the center of the rod body of the positioning conveying transmission rod (933); the positioning conveying linkage chain (935) is meshed and sleeved on the outside of the positioning conveying drive gear (932) and the positioning conveying intermediate transmission gear (934); The positioning conveying transmission rod (933) is symmetrically equipped with positioning conveying components at both ends. The positioning conveying components include a positioning conveying support (936), a positioning conveying clamp (937), a rotating gear (938) at the end of the positioning clamp, and a positioning workpiece conveying chain (939). Two positioning conveying supports (936) are symmetrically fixed to the upper surface of the positioning lifting plate (922), and the two positioning conveying supports (936) together support two parallel positioning conveying clamps (937); the two ends of the positioning clamps (937) are respectively rotatably installed with the end rotating gears (938) of the positioning clamps, and the positioning workpiece conveying chain (939) is meshed between the front and rear opposite end rotating gears (938); the two ends of the positioning conveying transmission rod (933) pass through the corresponding side of the positioning conveying clamps (937) and are fixedly connected to the center of the corresponding end rotating gear (938).

5. The heat treatment system for a cross-flow fan blade according to claim 4, characterized in that, The positioning stop structure (94) is located at the material output end of the positioning conveying structure (93). The positioning stop structure (94) includes a positioning stop cylinder (941), a positioning stop lifting plate (942), a positioning stop auxiliary slide rail (943), and a positioning stop auxiliary slider (944). The positioning stop cylinder (941) is vertically fixed on the positioning lifting plate (922) and located in the center between the two sets of positioning conveying components. The two sets of positioning stop auxiliary slide rails (943) are vertically fixed on both sides of the positioning stop cylinder (941). The vertical drive end of the positioning stop cylinder (941) is fixedly connected to the center of the lower plate surface of the positioning stop lifting plate (942); The positioning stop lifting plate (942) has positioning stop auxiliary sliders (944) installed at both ends of its upper plate surface. The positioning stop auxiliary slider (944) has the positioning flexible block (945) installed on the side facing the material input end of the positioning conveying structure (93). The side of the positioning stop auxiliary slider (944) away from the material input end of the positioning conveying structure (93) is slidably installed with the positioning stop auxiliary slide rail (943). The second detection module is a diffuse reflection photoelectric sensor, and the second detection module is fixedly installed on the positioning and transfer bracket (91).

6. The heat treatment system for a cross-flow fan blade according to claim 1, characterized in that, The heat treatment conveying mechanism (5) includes a conveyor frame (51), an active conveying roller group (52), a driven conveying roller group (53), a heat treatment conveying chain (54), and a heat treatment conveying drive motor (55). The active conveying roller group (52) and the driven conveying roller group (53) are respectively rotatably installed between the conveyor frame (51). The heat treatment conveying chain (54) is closed-loop sleeved on the outside of the active conveying roller group (52) and the driven conveying roller group (53). The heat treatment conveying drive motor (55) is fixedly installed at the end of the conveyor frame (51). The output end of the heat treatment conveying drive motor (55) is coaxially fixedly connected to the active conveying roller group (52). The third detection module is a high-temperature resistant photoelectric sensor, and multiple third detection modules are fixedly installed at intervals along the length direction of the conveyor frame (51).

7. The heat treatment system for a cross-flow fan blade according to claim 1, characterized in that, The heat treatment furnace (6) includes a furnace door lifting structure (62) for driving the furnace door (61) to vertically lift and close. The furnace body (69) is provided with a multi-dimensional support frame, including an X-axis support (65) arranged along the length of the furnace body (69), a Z-axis support (66) arranged along the height of the furnace body (69), and a Y-axis support (67) arranged along the width of the furnace body (69). The X-axis supports (65) are symmetrically distributed on both sides of the furnace body (69), the Z-axis supports (66) are symmetrically distributed on both sides of the through opening (60) of the furnace body (69), and the Y-axis supports (67) are horizontally erected above the through opening (60) of the furnace body (69). The two ends of each X-axis support (65) and the two ends of each Y-axis support (67) are respectively vertically fixedly connected to the top ends of the four Z-axis supports (66). The furnace door (61) is composed of multiple independent plates (611) spliced ​​together in parallel, and the connecting edges of two adjacent plates (611) are fitted with a concave-convex fitting structure. The same side of two adjacent plates (611) is hinged to the same side of an L-shaped hinge plate (613); one of the two adjacent plates (611) is fixed to the L-shaped hinge plate (613), and the other of the two adjacent plates (611) is hinged to the middle of the L-shaped hinge plate (613). A guide shaft (614) is rotatably mounted on the outer end of the L-shaped hinge plate (613). The two sets of furnace door lifting structures (62) are respectively fixedly installed on the top of the furnace body (69) and corresponding to the upper positions of the furnace doors (61) on both sides; the furnace door lifting structure (62) includes a furnace body hoist opening and closing machine (621), a furnace body transverse transmission rod (622), a furnace body drive gear (623), a furnace body end driven gear (624), a furnace body auxiliary driven gear (625), and a furnace body transmission chain (626). The furnace body hoisting and opening mechanism (621) is fixedly installed at the top center of the furnace body (69). The furnace body hoisting and opening mechanism (621) is provided with two independent drive ends, and each is fixedly connected to a transverse transmission rod (622) of the furnace body arranged laterally. The furnace body drive gear (623) is fixedly installed at the outer end of each transverse transmission rod (622). Two arc-shaped guide plates (68) with the same curvature are fixedly installed on the inner side of the support frame of the furnace body (69). The two arc-shaped guide plates (68) are respectively arranged in an arc along the arrangement trajectory of the X-direction support (65) and the Z-direction support (66). The two arc-shaped guide plates (68) are arranged in parallel and spaced apart. Several furnace body auxiliary driven gears (625) are rotatably installed in the arc gap between the two arc-shaped guide plates (68). The furnace body end driven gears (624) are rotatably installed at both ends of the arc gap between the two arc-shaped guide plates (68). The furnace body drive chain (626) on one side is arranged along the arc-shaped trajectory of the arc-shaped guide plate (68) on one side. The inner chain teeth of the furnace body drive chain (626) mesh with the furnace body driving gear (623), the furnace body end driven gear (624), and part of the furnace body auxiliary driven gear (625) on the corresponding side. The outer chain teeth of the furnace body drive chain (626) mesh with part of the furnace body auxiliary driven gear (625) for support. One of the fixed links of the furnace body drive chain (626) is fixedly connected to the side of the L-shaped hinge plate (613) located at the end through the link connector (612). The guide shaft (614) slides against the arc-shaped side between the two arc-shaped guide plates (68). The guide shaft (614) can slide along the arc-shaped trajectory of the arc-shaped guide plate (68) under the drive of the furnace body transmission chain (626).

8. The heat treatment system for a cross-flow fan blade according to claim 7, characterized in that, The outer edge of the plate (611) is surrounded by a plate frame (615), and the edge of the through opening (60) is surrounded by an inflation door seal (616). The plate frame (615) and the inflation door seal (616) abut and seal against each other under the action of the furnace door pressing structure (63). The furnace door clamping structure (63) includes a furnace door clamping cylinder (631), a furnace door clamping strip (632), a hinged connecting rod (633), a furnace door clamping support (634), a furnace door guide support (635), and a furnace door guide column (636). Two furnace door clamping supports (634) are fixedly arranged at intervals along the length of the Z-axis bracket (66). The two furnace door clamping supports (634) are respectively hinged to one end of a set of hinged connecting rods (633). The telescopic drive end of the furnace door clamping cylinder (631) is hinged to the middle hinge point of one set of hinged connecting rods (633). The tail of the cylinder body of the furnace door clamping cylinder (631) is hinged to the middle hinge point of another set of hinged connecting rods (633) through a hinged rod (637). The other ends of the two sets of hinged connecting rods (633) are fixedly hinged to the back of the furnace door clamping strip (632). The furnace door clamping strip (632) abuts against the furnace door (61) under the drive of the furnace door clamping cylinder (631). Two furnace door guide supports (635) are arranged at intervals along the length of the Z-axis bracket (66). A guide hole (638) is provided inside the furnace door guide support (635). One end of the furnace door guide post (636) is fixedly connected to the back of the furnace door pressing strip (632), and the other end of the furnace door guide post (636) is movably inserted into the inside of the guide hole (638).

9. The heat treatment system for a cross-flow fan blade according to claim 7, characterized in that, The heat treatment furnace (6) also includes a furnace door anti-fall structure (64) to prevent the furnace door (61) from falling suddenly due to failure. The furnace door anti-fall structure (64) includes an anti-fall cylinder (641), an outer Z-direction limiting strip (642), and an inner Z-direction limiting strip (643). The outer Z-direction limiting strip (642) and the inner Z-direction limiting strip (643) are arranged parallel to each other along the length direction of the Z-direction bracket (66), and a limiting slide (646) is formed between them for the guide shaft (614) to slide through. The ends of the outer Z-direction limiting strip (642) and the inner Z-direction limiting strip (643) are connected to the two arc-shaped guide plates (68). The end of the corresponding connection is provided; the anti-fall cylinder (641) is fixedly installed on the outer side of the outer Z-direction limiting strip (642), and the outer Z-direction limiting strip (642) and the inner Z-direction limiting strip (643) are respectively provided with limiting holes (644). The telescopic drive end of the anti-fall cylinder (641) is fixedly connected to the limiting post (645). The anti-fall cylinder (641) can drive the limiting post (645) to telescopically pass through the two sets of limiting holes (644) to intercept or open the limiting slide (646).

10. The heat treatment system for a cross-flow fan blade according to claim 7, characterized in that, A heating fan (600) is fixedly installed at the center of the top of the furnace body (69). The air outlet of the heating fan (600) is connected to a hot air guide duct (601). The hot air guide duct (601) extends along the inner side wall of the furnace body (69) to the position below the heat treatment conveying mechanism (5). The hot air guide duct (601) has multiple air guide ports (602) evenly distributed on the duct wall, and the multiple air guide ports (602) are evenly arranged below the heat treatment conveying mechanism (5).

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