A heat treatment apparatus and method for high strength wire

Abstract

This invention discloses a heat treatment device and method for high-strength wire, belonging to the field of heat treatment technology. It includes: a U-shaped base, a heat treatment furnace mounted on the top of the U-shaped base, a PLC controller mounted on the heat treatment furnace, a furnace door on one side of the PLC controller, a moving assembly for driving the furnace door on the U-shaped base, an energy-saving heat recovery mechanism on the furnace door, two connecting frames on the heat recovery mechanism, a main shaft rotatably mounted at the top center of the connecting frames, a turntable at the bottom of the main shaft, and several secondary shafts rotatably mounted around the turntable. An exhaust fan filters the hot air from the furnace through a circular hole in an annular box and stores it in an insulated box. Before the next heat treatment, an exhaust fan returns the hot air from the insulated box to the furnace, cooperating with an exhaust pump to expel cold air, reducing energy consumption for reheating the furnace and preventing burns to workers caused by a sudden surge of hot air when the furnace door is opened.

Description

Technical Field

[0001] This invention relates to a heat treatment apparatus and method for high-strength wire, belonging to the field of heat treatment technology. Background Technology

[0002] High-strength filaments, as a class of filamentous materials with high mechanical strength (especially tensile strength), are typically strengthened through material composition optimization, precision smelting and processing, or subsequent treatments (such as heat treatment and cold working). They are widely used in aerospace, high-end equipment manufacturing, bridge engineering, and other scenarios with stringent requirements for material load-bearing capacity and fracture resistance. Heat treatment, as the core step in optimizing the performance of high-strength filaments, aims to fully release the mechanical potential of the original filament by precisely controlling its internal microstructure (such as grain morphology, precipitate distribution, and internal stress state), ultimately achieving a balance between "high strength" and supporting properties (such as toughness and dimensional stability).

[0003] In existing technologies, for short and thick high-strength filaments, a suspension method is typically used for heat treatment: multiple filaments are fixed at equal intervals on the suspension frame and then sent into the heat treatment furnace. After heat treatment and heat preservation, the furnace door is opened and the suspension frame is removed for cooling. However, this method has significant drawbacks.

[0004] When the furnace door is opened, a large amount of high-temperature hot air inside the furnace is directly lost, and there is a lack of heat recovery and reuse mechanism, resulting in high energy consumption. Moreover, the hot air rushing out when the furnace door is opened can easily cause burns to the surrounding staff. In addition, the hanging parts are fixed inside the furnace, and the wire is in a static state. It is easy to cause uneven heating due to differences in the temperature field distribution inside the furnace (such as high temperature near the heat source and low temperature far away), which in turn affects the consistency of the microstructure and ultimately causes fluctuations in the mechanical properties of the wire. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a heat treatment apparatus and method for high-strength wire.

[0006] The technical solution adopted by this invention to solve its technical problem is: A heat treatment apparatus and method for high-strength wire includes: a U-shaped base, a heat treatment furnace mounted on the top of the U-shaped base, a PLC controller mounted on the heat treatment furnace, a furnace door mounted on one side of the PLC controller, a moving component for driving the furnace door to move on the U-shaped base, an energy-saving heat recovery mechanism mounted on the furnace door, two connecting frames mounted on the heat recovery mechanism, a main shaft rotatably mounted at the top center of the connecting frames, a turntable mounted at the bottom of the main shaft, several secondary shafts rotatably mounted around the turntable, a clamping component mounted at the bottom of the secondary shafts, and a rotating component mounted on the main shaft for causing the clamping component to revolve and rotate.

[0007] Preferably, the movable component includes two mounting slots, which are respectively opened at both ends of one side of the U-shaped seat. A multi-stage electric cylinder is installed in the mounting slot. The output end of the multi-stage electric cylinder is fixedly connected to one side of the connecting plate. The top of the connecting plate and the bottom of the furnace door are fixedly installed. Several rollers are installed at the bottom of the connecting plate.

[0008] Preferably, the heat recovery mechanism includes an insulated box, which is fixed below the side of the furnace door away from the heat treatment furnace. An exhaust fan and an exhaust fan are respectively installed at both ends of the top of the insulated box. A main pipe is installed in the middle of the upper part of the furnace door. A filter assembly is provided at one end of the main pipe. The filter assembly and the exhaust fan are connected through an air inlet pipe, and a solenoid valve is installed on the air inlet pipe. The other end of the main pipe is connected to the exhaust fan through an air outlet pipe, and a solenoid valve is installed on the air outlet pipe. An annular box is connected to one side of the main pipe, and an annular box is connected to one side of the annular box through a secondary pipe. Several circular holes are opened at the bottom of both the annular box and the annular box. An air pump is provided at the top of the heat treatment furnace. Two connecting brackets are respectively fixedly installed on the top of the annular box and the annular box.

[0009] Preferably, the filter assembly includes a filter box, which is fixed between the air inlet pipe and the main pipe. Three sets of slots are installed between the upper and lower ends of the filter box, and a filter plate is inserted between each set of slots. A cover is hinged to one bottom side of the filter box.

[0010] Preferably, a fixing block is installed at the top center of the cover, and circular grooves are opened at both ends of the fixing block. A rod is slidably installed in the circular groove. One end of the rod is connected to the fixing block by a spring. A top rod is installed on the top of the rod. A top groove communicating with the circular groove is opened on the top of the fixing block. The top rod is slidably connected to the top groove. Two vertical plates are installed on one side of the top of the filter box. Through holes are opened on the vertical plates that are slidably connected to the rod.

[0011] Preferably, the clamping assembly includes a mounting plate, which is fixedly mounted on the bottom of the sub-shaft. A fixed clamping block is fixedly mounted on one side of the bottom of the mounting plate, and a groove is provided on the other side of the bottom of the mounting plate. A screw is rotatably mounted in the groove, and a screw block is provided on the outer side wall of the screw through threads. A movable clamping plate is mounted on the bottom of the screw block.

[0012] Preferably, the rotating assembly includes two worm gears, which are respectively mounted on the top of two main shafts. A worm gear meshing with the worm gears is rotatably mounted on the furnace door. One side of the worm gear is connected to the output end of a servo motor. A gear is installed below the outer side wall of the secondary shaft. Annular tooth grooves meshing with the gears are installed below the inner walls of both annular box one and annular box two.

[0013] Preferably, in step one: place the top of the aluminum alloy wire between the fixed clamping block and the movable clamping plate, and then rotate the screw to make the screw block drive the movable clamping plate closer to the fixed clamping block, so that the aluminum alloy wire can be clamped and fixed. After all the aluminum alloy wires are clamped, the multi-stage electric cylinder drives the connecting plate to retract, so that the furnace door is close to the heat treatment furnace and the aluminum alloy wire can be sent into the heat treatment furnace for heat treatment. Step 2: During heat treatment, the servo motor drives the worm gear to rotate, which in turn drives the turntable to rotate. As the turntable rotates, several aluminum alloy wires revolve. At the same time, as several gears revolve, they mesh with the annular tooth groove, causing the secondary shaft to rotate and drive several aluminum alloy wires to rotate. By rotating the aluminum alloy wires inside the heat treatment furnace, the heat treatment can be made more uniform.

[0014] Step 3: After heat treatment and heat preservation, start the exhaust fan. The hot air in the PLC controller enters the second annular box through the round hole, then enters the first annular box through the auxiliary pipe, and then enters the heat preservation box through the main pipe, filter assembly and air inlet pipe for storage. The hot air passes through the filter box, where the filter plate filters the impurities in the hot air, which protects the exhaust fan. Then, the multi-stage electric cylinder drives the connecting plate to extend and open the furnace door, which can then take out the aluminum alloy wire for cooling. Step 4: After cooling, remove the heat-treated aluminum alloy wire, clamp the aluminum alloy wire to be heat-treated, move the furnace door to send the aluminum alloy wire into the heat treatment furnace, the air pump extracts the cold air from the heat treatment furnace, and then start the second solenoid valve to send the hot air stored in the heat preservation box into the main pipeline through the air outlet pipe, and then discharge it into the exhaust fan through the round hole. Then start the heat treatment furnace to carry out heat treatment, which saves energy. Step 5: When the filter plate needs to be cleaned or replaced, bring the two push rods close together, drive the insert rod into the circular groove and squeeze the spring. The insert rod will leave the through hole, and then the box cover can be rotated downwards. Then the filter plate can be pulled out of the slot. During installation, first insert the filter plate into the slot, then press the two push rods and rotate the box cover upwards. After the box cover is closed, it will hold the filter plate in place, thus limiting the filter plate. Then release the push rods, and the spring's restoring force will cause the insert rod to spring into the through hole, thus limiting the filter box and box cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. After heat treatment, the exhaust fan filters the hot air from the furnace through the circular holes of the annular box and stores it in the insulation box. Before the next heat treatment, the exhaust fan returns the hot air from the insulation box to the furnace, and the exhaust pump discharges cold air, reducing the energy consumption for reheating the furnace and preventing workers from being scalded by the sudden outflow of hot air when the furnace door is opened. The filter assembly (filter box, filter plates, slots, and box cover) filters impurities (such as scale and dust) in the recovered hot air through three sets of filter plates, preventing impurities from entering the exhaust fan, exhaust fan, and other equipment and causing wear or blockage, significantly extending the service life of the equipment. In addition, the filter plates are connected by slots, and the quick-opening and closing structure of the box cover (insertion rod, spring, and top rod) facilitates regular cleaning or replacement, reducing maintenance costs. 2. The servo motor of the rotating component drives the worm gear to rotate, causing the turntable to rotate the wire. At the same time, the gear on the secondary shaft meshes with the annular tooth groove, causing the wire to rotate synchronously. This dual motion ensures that all parts of the wire can be evenly contacted with the temperature field inside the furnace, effectively avoiding local overheating or underheating, significantly improving the consistency of the microstructure, and ensuring the stability of the wire's mechanical properties. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the heat recovery mechanism of the present invention; Figure 3 This is a schematic diagram of the filter assembly structure of the present invention; Figure 4 This is a schematic diagram of the clamping component structure of the present invention; Figure 5 This is a schematic diagram of the rotating component structure of the present invention; Figure 6 This is a schematic diagram of the rotating component structure of the present invention.

[0018] In the diagram: 1. U-shaped base; 2. Heat treatment furnace; 3. PLC controller; 4. Furnace door; 5. Moving assembly; 6. Heat recovery mechanism; 7. Connecting frame; 8. Main shaft; 9. Turntable; 10. Sub-shaft; 11. Clamping assembly; 12. Rotating assembly; 501. Mounting slot; 502. Multi-stage electric cylinder; 503. Connecting plate; 504. Roller; 601. Insulation box; 602. Exhaust fan; 603. Exhaust fan; 604. Main pipe; 605. Filter assembly; 606. Inlet pipe; 607. Solenoid valve one; 608. Exhaust pipe; 609. Solenoid valve two; 6010. Annular box one; 6011. Sub-pipe; 60 12. Annular box II; 6013. Circular hole; 6014. Air pump; 6051. Filter box; 6052. Slot; 6053. Filter plate; 6054. Box cover; 6055. Fixing block; 6056. Circular groove; 6057. Insert rod; 6058. Spring; 6059. Top rod; 60510. Top groove; 60511. Vertical plate; 60512. Through hole; 111. Mounting plate; 112. Fixing clamping block; 113. Groove; 114. Screw; 115. Screw block; 116. Movable clamping plate; 121. Worm gear; 122. Worm; 123. Servo motor; 124. Gear; 125. Annular tooth groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 The present invention provides a technical solution: A heat treatment apparatus and method for high-strength wire includes: a U-shaped base 1, a heat treatment chamber 2 mounted on the top of the U-shaped base 1, a PLC controller 3 mounted on the heat treatment chamber 2, a chamber door 4 mounted on one side of the PLC controller 3, a moving component 5 mounted on the U-shaped base 1 to drive the chamber door 4 to move, an energy-saving heat recovery mechanism 6 mounted on the chamber door 4, two connecting frames 7 mounted on the heat recovery mechanism 6, a main shaft 8 rotatably mounted at the top center of the connecting frame 7, a turntable 9 mounted at the bottom of the main shaft 8, several secondary shafts 10 rotatably mounted around the turntable 9, a clamping component 11 mounted at the bottom of the secondary shafts 10, and a rotating component 12 mounted on the main shaft 8 to cause the clamping component 11 to revolve and rotate.

[0021] Furthermore, the PLC controller has a built-in touch screen and preset program modules, which can set parameters such as heating temperature, holding time, and rotation speed of rotating components according to the heat treatment process requirements of different wire materials (such as aluminum alloy wire and high-strength steel wire), and automatically coordinate the linkage operation of moving components, heat recovery mechanism and rotating components to achieve full-process automated control.

[0022] In this embodiment: the moving component 5 includes two mounting slots 501, which are respectively opened at both ends of one side of the U-shaped seat 1. A multi-stage electric cylinder 502 is installed in the mounting slot 501. The output end of the multi-stage electric cylinder 502 is fixedly connected to one side of the connecting plate 503. The top of the connecting plate 503 and the bottom of the door 4 are fixedly installed. Several rollers 504 are installed on the bottom of the connecting plate 503.

[0023] Furthermore, the moving component is driven by a multi-stage electric cylinder, which moves the connecting plate and furnace door along the U-shaped seat to achieve automatic opening and closing of the furnace door. The multi-stage electric cylinder in the mounting slot can flexibly adjust its extension and retraction length to adapt to different opening and closing requirements; the rollers at the bottom of the connecting plate contact the ground, converting sliding friction into rolling friction, significantly reducing motion resistance, making the furnace door move more smoothly and effortlessly, while also reducing component wear and extending equipment life. This design eliminates the need for manual pushing and pulling of the furnace door, improving operational safety and automation, and is especially suitable for high-frequency heat treatment operations.

[0024] In this embodiment: the heat recovery mechanism 6 includes an insulated box 601, which is fixed below the side of the door 4 away from the heat treatment box 2. An exhaust fan 602 and an exhaust fan 603 are respectively installed at both ends of the top of the insulated box 601. A main pipe 604 is installed in the middle of the upper part of the door 4. A filter assembly 605 is provided at one end of the main pipe 604. The filter assembly 605 and the exhaust fan 602 are connected through an air inlet pipe 606. A solenoid valve 607 is provided on the air inlet pipe 606. The other end of the main pipe 604 is connected to the air outlet... Machine 603 is connected through an exhaust pipe 608, and an electromagnetic valve 609 is installed on the exhaust pipe 608. One side of the main pipe 604 is connected to an annular box 6010, and one side of the annular box 6010 is connected to an annular box 6012 through a secondary pipe 6011. Several round holes 6013 are opened at the bottom of both the annular box 6010 and the annular box 6012. An air pump 6014 is installed on the top of the heat treatment box 2. Two connecting brackets 7 are respectively fixedly installed on the top of the annular box 6010 and the annular box 6012.

[0025] Furthermore, after heat treatment, the exhaust fan is started, and solenoid valve one is opened. Hot air from the furnace enters the main pipeline through the round holes of annular box two and annular box one. After being purified by the filter assembly, it is stored in the insulation box through the air inlet pipe. Before the next heat treatment, the exhaust pump first expels the cold air from the furnace, then the exhaust fan is started, and solenoid valve two is opened. Hot air from the insulation box is sent back into the furnace through the air outlet pipe, the main pipeline, and the round holes of the annular box. Annular box one and annular box two are connected by a secondary pipe, and with the evenly distributed round holes at the bottom, the furnace space can be fully covered, ensuring more uniform heat collection and release. The insulation box effectively reduces heat loss, and the coordinated operation of the exhaust fan and exhaust fan reduces the energy consumption for reheating the furnace.

[0026] In this embodiment: the filter assembly 605 includes a filter box 6051, which is fixed between the air inlet pipe 606 and the main pipe 604. Three sets of slots 6052 are installed between the upper and lower ends of the filter box 6051, and a filter plate 6053 is inserted between each set of slots 6052. A box cover 6054 is hinged to the bottom of one side of the filter box 6051.

[0027] Furthermore, the filtration system enhances hot air purification through a three-stage filtration structure. The filter plates in the three slots can respectively employ metal mesh (to filter large oxide particles), activated carbon mesh (to adsorb oil fumes and odors), and HEPA mesh (to filter fine dust), achieving layered filtration. This ensures the cleanliness of the hot air entering the insulation chamber, preventing impurities from adhering to the inner wall of the chamber and affecting the insulation effect, or from entering the exhaust fan or outlet fan and causing impeller wear or pipe blockage.

[0028] In this embodiment: a fixing block 6055 is installed at the top center of the cover 6054. Both ends of the fixing block 6055 are provided with circular grooves 6056. A rod 6057 is slidably installed in the circular grooves 6056. One end of the rod 6057 is connected to the fixing block 6055 by a spring 6058. A top rod 6059 is installed on the top of the rod 6057. A top groove 60510 communicating with the circular grooves 6056 is provided on the top of the fixing block 6055. The top rod 6059 is slidably connected to the top groove 60510. Two vertical plates 60511 are installed on one side of the top of the filter box 6051. A through hole 60512 is provided on the vertical plate 60511 that is slidably connected to the rod 6057.

[0029] Furthermore, the door on one side of the filter box is designed with hinges for quick opening and closing. Combined with the snap-fit ​​structure between the insert rod and the vertical plate through hole, the filter plate can be replaced or cleaned without tools, improving maintenance efficiency. The spring-driven insert rod can automatically reset, ensuring the airtightness of the box cover after it is closed and preventing hot air leakage.

[0030] In this embodiment: the clamping assembly 11 includes a mounting plate 111, which is fixedly mounted on the bottom of the sub-shaft 10. A fixed clamping block 112 is fixedly mounted on one side of the bottom of the mounting plate 111, and a groove 113 is provided on the other side of the bottom of the mounting plate 111. A screw 114 is rotatably mounted in the groove 113. A screw block 115 is provided on the outer side wall of the screw 114 through a thread, and a movable clamping plate 116 is installed at the bottom of the screw block 115.

[0031] Furthermore, the clamping assembly employs an adjustable structure to accommodate wires of different specifications. The relative arrangement of the fixed clamping block and the movable clamping plate forms a clamping space. When the screw is rotated, the screw block moves linearly along the groove, causing the movable clamping plate to move closer to or away from the fixed clamping block, thus clamping high-strength wires of different diameters. The self-locking characteristic of the threaded drive ensures that the clamping will not loosen due to vibration after clamping, preventing the wire from falling off during revolution or rotation. The fixed connection between the mounting plate and the secondary shaft ensures that the clamping assembly moves synchronously with the secondary shaft, keeping the wire always within the effective heat treatment zone.

[0032] In this embodiment: the rotating assembly 12 includes two worm gears 121, which are respectively mounted on the top of the two main shafts 8. A worm 122 that meshes with the worm gears 121 is rotatably mounted on the door 4. One side of the worm 122 is connected to the output end of the servo motor 123. A gear 124 is mounted on the lower side of the outer wall of the sub-shaft 10. Annular tooth grooves 125 that mesh with the gear 124 are mounted on the lower side of the inner walls of both the first annular box 6010 and the second annular box 6012.

[0033] Furthermore, the rotating assembly achieves uniform heating of the filament through a composite motion of "revolution + rotation". A servo motor drives the worm gear to rotate, which in turn drives the main shaft and turntable to rotate. This causes several secondary shafts and the filament to revolve around the main shaft (the revolution speed can be adjusted by a PLC controller, ranging from 5-15 r / min). Simultaneously, the gears on the secondary shafts continuously mesh with the annular toothed grooves on the inner wall of the annular box. The gears rotate during the revolution, thereby driving the filament to rotate around its own axis (the rotation speed is related to the revolution radius; the rotation speed of the edge filament can reach 20-30 r / min). This dual motion ensures that all surfaces of the filament alternately contact the temperature fields of different areas within the furnace, effectively eliminating the problem of "overheating near the heat source and underheating far from the heat source" in traditional static heat treatment. Testing shows that the hardness deviation of various parts of the filament can be controlled within ±1 HRC, significantly improving product performance consistency. The worm gear drive features precise transmission ratio and a self-locking function, preventing accidental rotation of the turntable during power outages and ensuring operational safety.

[0034] In this implementation: Step 1: Place the top of the aluminum alloy wire between the fixed clamping block 112 and the movable clamping plate 116, and then rotate the screw 114 so that the screw block 115 drives the movable clamping plate 116 to approach the fixed clamping block 112, thereby clamping and fixing the aluminum alloy wire. After clamping all the aluminum alloy wires, the multi-stage electric cylinder 502 drives the connecting plate 503 to retract, so that the furnace door 4 approaches the heat treatment furnace 2, and the aluminum alloy wire can be sent into the heat treatment furnace 2 for heat treatment. Step 2: During heat treatment, the servo motor 123 drives the worm gear 122 to rotate, which in turn drives the worm wheel 121 to rotate. The worm wheel 121 drives the turntable 9 to rotate. When the turntable 9 rotates, it causes several aluminum alloy wires to revolve. At the same time, when several gears 124 revolve, they mesh with the annular tooth groove 125, causing the secondary shaft 10 to rotate and drive several aluminum alloy wires to rotate. By rotating the aluminum alloy wires in the heat treatment furnace 2, the heat treatment can be made more uniform.

[0035] Step 3: After heat treatment and heat preservation, start the exhaust fan 602. The hot air in the PLC controller 3 enters the second annular box 6012 through the round hole 6013, then enters the first annular box 6010 through the auxiliary pipe 6011, and then enters the heat preservation box 601 through the main pipe 604, filter assembly 605 and air inlet pipe 606 for storage. The hot air passes through the filter box 6051, where the filter plate 6053 filters the impurities in the hot air, which protects the exhaust fan 602. Then, the multi-stage electric cylinder 502 drives the connecting plate 503 to extend, opening the furnace door 4. The furnace door 4 can then take out the aluminum alloy wire for cooling. Step 4: After cooling, remove the heat-treated aluminum alloy wire, clamp the aluminum alloy wire to be heat-treated, move the furnace door 4 to send the aluminum alloy wire into the heat treatment furnace 2, the air pump 6014 extracts the cold air from the heat treatment furnace 2, and then start the solenoid valve 609 to send the hot air stored in the heat preservation box 601 into the main pipe 604 through the air outlet pipe 608, and then discharge it into the exhaust fan 602 through the round hole 6013. Then start the heat treatment furnace 2 to carry out heat treatment, which saves energy. Step 5: When cleaning or replacing filter plate 6053, bring the two push rods 6059 closer together, causing the insertion rod 6057 to enter the circular groove 6056 and compress the spring 6058. The insertion rod 6057 will then leave the through hole 60512, allowing the cover 6054 to rotate downwards. Then, the filter plate 6053 can be pulled out of the slot 6052. For installation, first insert the filter plate 6053 into the slot 6052, then press the two push rods 6059 and rotate the cover 6054 upwards. After the cover 6054 is closed, it will press against the filter plate 6053, limiting its movement. Then, release the push rods 6059. The restoring force of the spring 6058 will cause the insertion rod 6057 to spring into the through hole 60512, limiting the movement of the filter box 6051 and the cover 6054.

[0036] The workflow of this embodiment is as follows: Step 1: Place the top of the aluminum alloy wire between the fixed clamping block 112 and the movable clamping plate 116, and then rotate the screw 114 so that the screw block 115 drives the movable clamping plate 116 to approach the fixed clamping block 112, thereby clamping and fixing the aluminum alloy wire. After clamping all the aluminum alloy wires, the multi-stage electric cylinder 502 drives the connecting plate 503 to retract, so that the furnace door 4 approaches the heat treatment furnace 2, and the aluminum alloy wire can be sent into the heat treatment furnace 2 for heat treatment. Step 2: During heat treatment, the servo motor 123 drives the worm gear 122 to rotate, which in turn drives the worm wheel 121 to rotate. The worm wheel 121 drives the turntable 9 to rotate. When the turntable 9 rotates, it causes several aluminum alloy wires to revolve. At the same time, when several gears 124 revolve, they mesh with the annular tooth groove 125, causing the secondary shaft 10 to rotate and drive several aluminum alloy wires to rotate. By rotating the aluminum alloy wires in the heat treatment furnace 2, the heat treatment can be made more uniform.

[0037] Step 3: After heat treatment and heat preservation, start the exhaust fan 602. The hot air in the PLC controller 3 enters the second annular box 6012 through the round hole 6013, then enters the first annular box 6010 through the auxiliary pipe 6011, and then enters the heat preservation box 601 through the main pipe 604, filter assembly 605 and air inlet pipe 606 for storage. The hot air passes through the filter box 6051, where the filter plate 6053 filters the impurities in the hot air, which protects the exhaust fan 602. Then, the multi-stage electric cylinder 502 drives the connecting plate 503 to extend, opening the furnace door 4. The furnace door 4 can then take out the aluminum alloy wire for cooling. Step 4: After cooling, remove the heat-treated aluminum alloy wire, clamp the aluminum alloy wire to be heat-treated, move the furnace door 4 to send the aluminum alloy wire into the heat treatment furnace 2, the air pump 6014 extracts the cold air from the heat treatment furnace 2, and then start the solenoid valve 609 to send the hot air stored in the heat preservation box 601 into the main pipe 604 through the air outlet pipe 608, and then discharge it into the exhaust fan 602 through the round hole 6013. Then start the heat treatment furnace 2 to carry out heat treatment, which saves energy. Step 5: When cleaning or replacing filter plate 6053, bring the two push rods 6059 closer together, causing the insertion rod 6057 to enter the circular groove 6056 and compress the spring 6058. The insertion rod 6057 will then leave the through hole 60512, allowing the cover 6054 to rotate downwards. Then, the filter plate 6053 can be pulled out of the slot 6052. For installation, first insert the filter plate 6053 into the slot 6052, then press the two push rods 6059 and rotate the cover 6054 upwards. After the cover 6054 is closed, it will press against the filter plate 6053, limiting its movement. Then, release the push rods 6059. The restoring force of the spring 6058 will cause the insertion rod 6057 to spring into the through hole 60512, limiting the movement of the filter box 6051 and the cover 6054.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat treatment apparatus for high-strength wire, characterized in that, include: A U-shaped base is provided, with a heat treatment furnace mounted on top. A PLC controller is mounted on the heat treatment furnace, and a furnace door is located on one side of the PLC controller. A moving assembly that drives the furnace door is mounted on the U-shaped base. An energy-saving heat recovery mechanism is mounted on the furnace door, and two connecting frames are mounted on the heat recovery mechanism. A main shaft is rotatably mounted at the top center of each connecting frame. A turntable is located at the bottom of the main shaft, and several secondary shafts are rotatably mounted around the turntable. A clamping assembly is located at the bottom of each secondary shaft. A rotating assembly that causes the clamping assembly to revolve and rotate is mounted on the main shaft.

2. The heat treatment apparatus for high-strength wire according to claim 1, characterized in that, The moving component includes two mounting slots, which are respectively opened at both ends of one side of the U-shaped seat. A multi-stage electric cylinder is installed in the mounting slot. The output end of the multi-stage electric cylinder is fixedly connected to one side of the connecting plate. The top of the connecting plate and the bottom of the furnace door are fixedly installed. Several rollers are installed on the bottom of the connecting plate.

3. The heat treatment apparatus for high-strength wire according to claim 1, characterized in that, The heat recovery mechanism includes an insulated box, which is fixed below the furnace door on the side away from the heat treatment furnace. An exhaust fan and an exhaust fan are respectively installed at both ends of the top of the insulated box. A main pipe is installed in the middle of the upper part of the furnace door. A filter assembly is installed at one end of the main pipe. The filter assembly and the exhaust fan are connected through an air inlet pipe, which is equipped with a solenoid valve. The other end of the main pipe is connected to the exhaust fan through an air outlet pipe, which is equipped with a solenoid valve. A first annular box is connected to one side of the main pipe, and a second annular box is connected to one side of the first annular box through a secondary pipe. Both the first and second annular boxes have several circular holes at their bottoms. An air pump is installed at the top of the heat treatment furnace. Two connecting brackets are respectively fixedly installed on the tops of the first and second annular boxes.

4. The heat treatment apparatus for high-strength wire according to claim 3, characterized in that, The filter assembly includes a filter box, which is fixed between the air inlet pipe and the main pipe. Three sets of slots are installed between the upper and lower ends of the filter box, and a filter plate is inserted between each set of slots. A box cover is hinged to the bottom of one side of the filter box.

5. The heat treatment apparatus for high-strength wire according to claim 4, characterized in that, A fixing block is installed at the top center of the cover. Both ends of the fixing block have circular grooves. A rod is slidably installed in the circular groove. One end of the rod is connected to the fixing block by a spring. A top rod is installed on the top of the rod. The top of the fixing block has a top groove that communicates with the circular groove. The top rod is slidably connected to the top groove. Two vertical plates are installed on one side of the top of the filter box. The vertical plates have through holes that are slidably connected to the rod.

6. The heat treatment apparatus for high-strength wire according to claim 1, characterized in that, The clamping assembly includes a mounting plate, which is fixedly mounted on the bottom of the sub-shaft. A fixed clamping block is fixedly mounted on one side of the bottom of the mounting plate, and a groove is provided on the other side of the bottom of the mounting plate. A screw is rotatably mounted in the groove, and a screw block is provided on the outer side wall of the screw through threads. A movable clamping plate is mounted on the bottom of the screw block.

7. The heat treatment apparatus for high-strength wire according to claim 3, characterized in that, The rotating assembly includes two worm gears, which are respectively mounted on the top of two main shafts. A worm gear meshing with the worm gears is rotatably mounted on the furnace door. One side of the worm gear is connected to the output end of a servo motor. A gear is installed below the outer side wall of the secondary shaft. Annular tooth grooves meshing with gears are installed below the inner walls of both annular box one and annular box two.

8. A heat treatment method for high-strength wire according to any one of claims 1-7, characterized in that, Step 1: Place the top of the aluminum alloy wire between the fixed clamping block and the movable clamping plate, then rotate the screw to make the screw block move the movable clamping plate closer to the fixed clamping block, thus clamping and fixing the aluminum alloy wire. After clamping all the aluminum alloy wires, the multi-stage electric cylinder drives the connecting plate to retract, so that the furnace door is close to the heat treatment furnace, and the aluminum alloy wire can be sent into the heat treatment furnace for heat treatment. Step 2: During heat treatment, the servo motor drives the worm gear to rotate, which in turn drives the turntable to rotate. As the turntable rotates, several aluminum alloy wires revolve. At the same time, as several gears revolve, they mesh with the annular tooth groove, causing the secondary shaft to rotate and drive several aluminum alloy wires to rotate. By rotating the aluminum alloy wires inside the heat treatment furnace, the heat treatment can be made more uniform. Step 3: After heat treatment and heat preservation, start the exhaust fan. The hot air in the PLC controller enters the second annular box through the round hole, then enters the first annular box through the auxiliary pipe, and then enters the heat preservation box through the main pipe, filter assembly and air inlet pipe for storage. The hot air passes through the filter box, where the filter plate filters the impurities in the hot air, which protects the exhaust fan. Then, the multi-stage electric cylinder drives the connecting plate to extend and open the furnace door, which can then take out the aluminum alloy wire for cooling. Step 4: After cooling, remove the heat-treated aluminum alloy wire, clamp the aluminum alloy wire to be heat-treated, move the furnace door to send the aluminum alloy wire into the heat treatment furnace, the air pump extracts the cold air from the heat treatment furnace, and then start the second solenoid valve to send the hot air stored in the heat preservation box into the main pipeline through the air outlet pipe, and then discharge it into the exhaust fan through the round hole. Then start the heat treatment furnace to carry out heat treatment, which saves energy. Step 5: When the filter plate needs to be cleaned or replaced, bring the two push rods close together, drive the insert rod into the circular groove and squeeze the spring. The insert rod will leave the through hole, and then the box cover can be rotated downwards. Then the filter plate can be pulled out of the slot. During installation, first insert the filter plate into the slot, then press the two push rods and rotate the box cover upwards. After the box cover is closed, it will hold the filter plate in place, thus limiting the filter plate. Then release the push rods, and the spring's restoring force will cause the insert rod to spring into the through hole, thus limiting the filter box and box cover.

Images