A continuous heat treatment apparatus and method for spinning pulley

Abstract

The application belongs to the technical field of metal heat treatment, and particularly relates to a continuous heat treatment device and method for a spinning pulley, which is aimed at the oxide scale carried on the workpiece which is easy to fall into the quenching liquid, and is mixed and suspended in the quenching liquid along with the sludge and colloid generated by the oxidation of the quenching oil, so as to cause the rapid accumulation of impurities in the quenching liquid, and thus frequent cleaning treatment of the quenching liquid is required, the heat treatment continuity is affected, and the workpiece heat treatment quality is affected. The following scheme is proposed, including a heat treatment frame. The continuous heat treatment device and method for the spinning pulley disclosed by the application have the effects of improving the heat treatment continuity and the workpiece heat treatment quality, the device can suck the quenching liquid in the sinking area of the workpiece in real time, so as to avoid the mixing and diffusion of the quenching liquid, thereby avoiding the rapid accumulation of impurities in the quenching liquid, and the sucked quenching liquid is rapidly treated and circulated, so as to ensure the long-time use performance of the quenching liquid.

Description

Technical Field

[0001] This invention relates to the field of metal heat treatment technology, and in particular to a continuous heat treatment apparatus and method for spinning pulleys. Background Technology

[0002] Spin pulleys are transmission parts manufactured using a metal spinning forming process. They are widely used in the automotive, machinery and other industries. Compared with cast or machined pulleys, their core feature is that they are formed by the "flow" of metal rather than "cutting". In order to further improve the wear resistance and fatigue strength of the groove surface, some high-performance spin pulleys undergo local or overall heat treatment after forming.

[0003] Heat treatment is a process technology that changes the internal microstructure of a metal or alloy by controlling the heating and cooling process, thereby obtaining the desired properties (such as hardness, strength, toughness, wear resistance, plasticity, etc.), that is, changing the physical structure of the metal.

[0004] In existing spinning pulleys, quenching fluid is used to quench the heated pulley during heat treatment. However, during quenching, the oxide scale carried by the workpiece easily falls into the quenching fluid. As the heat treatment progresses, it mixes with sludge and gum produced by the oxidation of the quenching oil and remains suspended in the quenching fluid. This leads to the rapid accumulation of impurities in the quenching fluid, requiring frequent cleaning of the quenching fluid, which affects the continuity of heat treatment and the quality of the workpiece heat treatment. Summary of the Invention

[0005] This invention discloses a continuous heat treatment apparatus and method for spinning pulleys, aiming to solve the technical problem in the prior art where oxide scale carried on the workpiece easily falls into the quenching liquid and mixes with sludge and colloids produced by the oxidation of the quenching oil during heat treatment, suspending in the quenching liquid. This leads to the rapid accumulation of impurities in the quenching liquid, requiring frequent cleaning of the quenching liquid, affecting the continuity of heat treatment and the quality of workpiece heat treatment.

[0006] The present invention provides a continuous heat treatment apparatus for spinning pulleys, comprising:

[0007] A heat treatment frame is provided with a quenching liquid tank, and a top cover plate is provided on the quenching liquid tank. A quenching port is opened on the top cover plate.

[0008] A fixed bracket is mounted on a heat treatment frame. A servo motor is mounted on the fixed bracket. The output shaft of the servo motor is connected to a processing turntable via a coupling. Multiple telescopic cylinders are mounted on the processing turntable. Each output end of the multiple telescopic cylinders is equipped with a workpiece fixing seat. Each workpiece fixing seat is equipped with a pulley body.

[0009] A heat processor is mounted on a heat treatment frame, and a heat treatment enclosure is provided on the heat processor and the heat treatment frame.

[0010] Two coil connectors are provided on the heat processor, and the same heating coil is provided on both coil connectors;

[0011] The quenching and impurity removal unit is set on the quenching liquid tank. The quenching and impurity removal unit includes an annular ring tube, two magnetic separation chambers and two secondary separation chambers. The two secondary separation chambers are located below the two magnetic separation chambers. The annular ring tube is provided with multiple liquid suction holes.

[0012] The quenching protection module is installed on the quenching liquid tank. The quenching protection module includes a first composite plate, a second composite plate, a negative pressure air pump, and a nitrogen pump.

[0013] In a preferred embodiment, the quenching and impurity removal unit further includes:

[0014] A delivery pump is installed on the quenching liquid tank. The annular ring pipe is installed at the input end of the delivery pump, and a diversion pipe is installed at the output end of the delivery pump. Two magnetic separation chambers are respectively installed at the two output ends of the diversion pipe.

[0015] Two control valves, both of which are located on the shunt pipe;

[0016] Two threaded bases are respectively set on two magnetic separation chambers, and each of the two threaded bases is equipped with a magnetic suction ring roller, which is located inside the two magnetic separation chambers respectively.

[0017] In a preferred embodiment, the quenching and impurity removal unit further includes:

[0018] Two branch pumps are provided, both of which are mounted on a branch pipe, and the output ends of both branch pumps are provided with branch pipes.

[0019] Two inner ring nozzles are respectively installed on two branch pipes. Each inner ring nozzle has multiple spray holes and is installed inside two magnetic separation chambers.

[0020] In a preferred embodiment, the quenching and impurity removal unit further includes:

[0021] Multiple electric telescopic rods are mounted on a heat treatment frame, and the output ends of two adjacent electric telescopic rods are provided with the same mounting bracket.

[0022] Two disassembly motors are mounted on two mounting brackets. Two threaded bases are mounted on the output shafts of the two disassembly motors via couplings. Each threaded base is equipped with a connecting hose. Two secondary separation chambers are mounted on the two connecting hoses and the heat treatment frame, respectively.

[0023] In a preferred embodiment, the quenching and impurity removal unit further includes:

[0024] Two microbubble generators are respectively installed on the two secondary separation chambers;

[0025] Two oil-based adhesive storage chambers are respectively located on two secondary separation chambers, and each of the two oil-based adhesive storage chambers is equipped with a tie rod.

[0026] Two reflux pipes are respectively installed on two secondary separation chambers. One end of each reflux pipe is provided with the same circulation end pipe, and the output end of the circulation end pipe is connected to the interior of the quenching liquid chamber.

[0027] In a preferred embodiment, the quenching and impurity removal unit further includes:

[0028] Two scraping ring frames are located inside the two secondary separation chambers, and the inner walls of the two scraping ring frames are in contact with the outer walls of the two oil and glue storage chambers, respectively.

[0029] Two general-purpose motors are respectively installed on two secondary separation chambers, and the two scraping ring frames are respectively installed on the output shafts of the two general-purpose motors through couplings.

[0030] In a preferred embodiment, the quenching protection module further includes:

[0031] Multiple guide slots are provided on the top cover plate, and the first and second composite plates are respectively disposed on the multiple guide slots;

[0032] A support component is mounted on the top cover plate. Two active motors are mounted on the support component, and the output shafts of the two active motors are connected to double-groove pulleys via couplings.

[0033] In a preferred embodiment, the quenching protection module further includes:

[0034] Two connecting wire harnesses are respectively set on two double-groove wire reels, and one end of each of the two connecting wire harnesses is provided with a connector, and both connectors are set on the first composite plate;

[0035] Two fasteners are provided, both of which are mounted on the top cover plate. Each of the two fasteners is equipped with a pull-back spring rod, one end of which is mounted on the first composite plate.

[0036] In a preferred embodiment, the quenching protection module further includes:

[0037] Two connecting cables are respectively set on two double-groove reels, and one end of each of the two connecting cables is set on the second composite plate;

[0038] Two telescopic springs are respectively set on two fixed parts, and one end of each of the two telescopic springs is set on the second composite plate. The second composite plate and the first composite plate are both located above the quenching port.

[0039] A continuous heat treatment method for spinning pulleys, using a continuous heat treatment apparatus for spinning pulleys as described above, includes the following steps:

[0040] Step 1: Place the workpiece on the workpiece holder, start the servo motor, and drive the processing turntable to move the workpiece to the heating coil for heating.

[0041] Step 2: During heating, the heat processor operates and heats the heating coil through the coil connector. At the same time, the telescopic cylinder in the corresponding part operates to move the workpiece on the workpiece holder into the heating coil for heating.

[0042] Step 3: During heat treatment quenching, the workpiece is moved above the quenching port. At this time, the quenching protection module is activated, causing the first and second plates to unfold, so as to cooperate with the telescopic cylinder to allow the workpiece to enter the quenching chamber. Then, the first and second plates are closed until the quenching heat treatment is completed.

[0043] Step 4: During the quenching process, the quenching and impurity removal unit operates to quickly treat the oxide scale brought in by the workpiece and the sludge and gum produced by the oxidation of the quenching liquid. After treatment, the quenching liquid is circulated back until the quenching heat treatment is completed.

[0044] As can be seen from the above, the continuous heat treatment device for spinning pulleys provided by the present invention has the function of improving the continuity of heat treatment and the quality of workpiece heat treatment. During heat treatment, the device can extract the quenching liquid in the workpiece immersion area in real time, so that the device can quickly treat the oxide scale brought in by the workpiece and the sludge and colloids generated by the oxidation of the quenching liquid, and prevent them from mixing and spreading in the quenching liquid, thereby avoiding the rapid accumulation of impurities in the quenching liquid. At the same time, the extracted quenching liquid is quickly processed and circulated to ensure the long-term performance of the quenching liquid. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0046] Figure 2 This is a schematic diagram of the overall front view of the present invention;

[0047] Figure 3 This is a schematic diagram of the combined structure of the heating coil and heat processor of the present invention;

[0048] Figure 4 This is a schematic diagram of the quenching and impurity removal unit structure of the present invention;

[0049] Figure 5 This is a schematic diagram of the combined structure of the annular ring tube and the magnetic ionization chamber of the present invention;

[0050] Figure 6 This is a schematic diagram of the disassembled structure of the magnetic separation chamber and the threaded base of the present invention;

[0051] Figure 7 This is a schematic diagram of the combined structure of the threaded base and the secondary separation chamber of the present invention;

[0052] Figure 8 This is a schematic diagram of the disassembled structure of the scraping ring frame and the oil storage bin of the present invention;

[0053] Figure 9 This is a schematic diagram of the quenching protection module structure of the present invention;

[0054] Figure 10 This is a schematic diagram of the combined structure of laminate one and laminate two of the present invention.

[0055] In the diagram: 1. Heat treatment frame; 2. Heat processor; 3. Fixed bracket; 4. Servo motor; 5. Processing turntable; 6. Pulley body; 7. Quenching and impurity removal unit; 701. Conveyor pump; 702. Magnetic separation chamber; 703. Electric telescopic rod; 704. Secondary separation chamber; 705. Circulation end pipe; 706. Suction hole; 707. Annular ring pipe; 708. Diverter pipe; 709. Connecting hose; 710. Mounting bracket; 711. Control valve; 712. Branch pump; 713. Branch pipe; 714. Inner ring nozzle; 715. Threaded base; 716. Magnetic suction ring roller; 717. Return pipe; 718. Disassembly motor; 719. General motor 720. Microbubble generator; 721. Tie rod; 722. Oil and glue storage tank; 723. Scraping ring frame; 8. Heat treatment enclosure; 9. Quenching protection module; 901. Negative pressure air pump; 902. Nitrogen pump; 903. Plywood plate one; 904. Plywood plate two; 905. Guide groove; 906. Telescopic spring; 907. Fixing component; 908. Connecting wire harness; 909. Support component; 910. Double grooved reel; 911. Active motor; 912. Connecting component; 913. Return spring rod; 914. Connecting cable; 10. Workpiece fixing seat; 11. Telescopic cylinder; 12. Heating coil; 13. Coil connector; 14. Quenching liquid tank; 15. Top cover plate. Detailed Implementation

[0056] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0057] The continuous heat treatment device for spinning pulleys disclosed in this invention is mainly used in scenarios where the oxide scale carried on the workpiece easily falls into the quenching liquid and mixes with the sludge and colloids produced by the oxidation of the quenching oil during the heat treatment process, resulting in the rapid accumulation of impurities in the quenching liquid. This necessitates frequent cleaning of the quenching liquid, affecting the continuity of heat treatment and the quality of the workpiece heat treatment.

[0058] Reference Figures 1-10 A continuous heat treatment apparatus for spinning pulleys, comprising:

[0059] A heat treatment frame 1 is provided, a quenching liquid tank 14 is provided on the heat treatment frame 1, a top cover plate 15 is provided on the quenching liquid tank 14, and a quenching port is provided on the top cover plate 15.

[0060] Fixed bracket 3 is set on heat treatment frame 1. Servo motor 4 is set on fixed bracket 3. The output shaft of servo motor 4 is connected to processing turntable 5 through coupling. Multiple telescopic cylinders 11 are set on processing turntable 5. Workpiece fixing seat 10 is set at the output end of multiple telescopic cylinders 11. Pulley body 6 is set on multiple workpiece fixing seats 10.

[0061] Heat processor 2 is disposed on heat treatment frame 1, and heat treatment frame 8 is provided on heat processor 2 and heat treatment frame 1.

[0062] Two coil connectors 13 are provided on the heat processor 2, and the same heating coil 12 is provided on the two coil connectors 13.

[0063] Quenching and impurity removal unit 7 is disposed on quenching liquid tank 14. Quenching and impurity removal unit 7 includes an annular ring pipe 707, two magnetic separation chambers 702 and two secondary separation chambers 704. The two secondary separation chambers 704 are located below the two magnetic separation chambers 702. Multiple liquid suction holes 706 are opened on the annular ring pipe 707.

[0064] Quenching protection module 9 is installed on quenching liquid tank 14. Quenching protection module 9 includes composite plate one 903, composite plate two 904, negative pressure air pump 901 and nitrogen pump 902.

[0065] Reference Figure 1 , Figure 2 and Figures 4-8 In a preferred embodiment, the quenching and impurity removal unit 7 further includes:

[0066] A delivery pump 701 is installed on the quenching liquid tank 14. An annular ring pipe 707 is installed at the input end of the delivery pump 701. A diversion pipe 708 is installed at the output end of the delivery pump 701. Two magnetic separation chambers 702 are respectively installed at the two output ends of the diversion pipe 708.

[0067] Two control valves 711 are provided on the diversion pipe 708;

[0068] Two threaded bases 715 are respectively set on two magnetic separation chambers 702. Each of the two threaded bases 715 is equipped with a magnetic suction ring roller 716, and the two magnetic suction ring rollers 716 are respectively located inside the two magnetic separation chambers 702.

[0069] In this invention, the quenching and impurity removal unit 7 further includes:

[0070] Two branch pumps 712 are installed on the branch pipe 708, and the output end of each branch pump 712 is provided with a branch pipe 713.

[0071] Two inner ring nozzles 714 are respectively installed on two branch pipes 713. Each inner ring nozzle 714 has multiple nozzle holes. The two inner ring nozzles 714 are respectively installed inside two magnetic separation chambers 702.

[0072] In this invention, the quenching and impurity removal unit 7 further includes:

[0073] Multiple electric telescopic rods 703 are mounted on the heat treatment frame 1, and the output ends of two adjacent electric telescopic rods 703 are provided with the same mounting bracket 710.

[0074] Two disassembly motors 718 are respectively mounted on two mounting brackets 710. Two threaded bases 715 are respectively mounted on the output shafts of the two disassembly motors 718 via couplings. Each of the two threaded bases 715 is equipped with a connecting hose 709. Two secondary separation chambers 704 are respectively mounted on the two connecting hoses 709 and the heat treatment frame 1.

[0075] In this invention, the quenching and impurity removal unit 7 further includes:

[0076] Two microbubble generators 720 are respectively installed on two secondary separation chambers 704;

[0077] Two oil glue storage chambers 722 are respectively set on two secondary separation chambers 704, and each of the two oil glue storage chambers 722 is equipped with a tie rod 721.

[0078] Two return pipes 717 are respectively installed on two secondary separation chambers 704. One end of the two return pipes 717 is provided with the same circulation end pipe 705. The output end of the circulation end pipe 705 is connected to the interior of the quenching liquid chamber 14.

[0079] In this invention, the quenching and impurity removal unit 7 further includes:

[0080] Two scraping ring frames 723 are located inside the two secondary separation chambers 704 respectively, and the inner walls of the two scraping ring frames 723 are in contact with the outer walls of the two oil and glue storage chambers 722 respectively.

[0081] Two general-purpose motors 719 are respectively installed on two secondary separation chambers 704, and two scraping ring frames 723 are respectively installed on the output shafts of the two general-purpose motors 719 via couplings.

[0082] Specifically, during the quenching process, the delivery pump 701 operates, rapidly drawing quenching fluid from the workpiece submersion area through the annular pipe 707 and its suction hole 706. This allows the oxide scale, sludge, and colloids brought in by the workpiece to enter the distribution pipe 708 and then into the magnetic ionization chamber 702. At the same time, the branch pump 712 operates, transporting the quenching fluid containing impurities from the distribution pipe 708 to the branch pipe 713, and further to the inner annular nozzle 714. This allows the quenching fluid containing impurities sprayed from the inner annular nozzle 714 to interact with the quenching fluid containing impurities entering the magnetic ionization chamber 702 through the distribution pipe 708. The flow direction increases the residence time of the impurity-containing quenching fluid inside the magnetic chamber, which, in conjunction with the magnetic suction roller 716, separates the ferromagnetic oxide scale from the impurities. Then, the quenching fluid enters the secondary separation chamber 704 through the connecting hose 709. At this time, the microbubble generator 720 operates to produce microbubbles, which causes the sludge and colloids produced by the oxidation of the quenching fluid to float up. Then, the general-purpose motor 719 operates, which drives the scraping ring frame 723 to rotate and separate and scrape the sludge and colloids produced by the oxidation of the quenching fluid. As it rotates, it is collected into the oil and colloid storage chamber 722, and then transported back into the quenching fluid chamber 14 through the return pipe 717 and the circulation end pipe 705 to complete the processing.

[0083] When a single path needs to be cleaned, the two control valves 711 switch on and off to complete the path switching. At the same time, the disassembly motor 718 is operated to cooperate with the electric telescopic rod 703 to drive the threaded base 715 to rotate, thereby disassembling and separating the threaded base 715 from the magnetic separation chamber 702, and causing the magnetic suction roller 716 to move out of the magnetic separation chamber 702 to collect the adsorbed ferromagnetic oxide scale. At the same time, the oil and glue storage chamber 722 is disassembled through the pull rod 721 to collect the sludge and glue generated by the oxidation of the quenching liquid.

[0084] In specific application scenarios, the quenching and impurity removal unit 7 is suitable for the quenching impurity treatment process of spinning pulley heat treatment. That is, the quenching and impurity removal unit 7 can extract the quenching liquid in the workpiece sinking area in real time through the annular ring pipe 707, so that the device can quickly and separately treat the oxide scale, sludge and colloids brought in by the workpiece through the magnetic separation chamber 702 and the secondary separation chamber 704, thereby avoiding the mixing and diffusion of impurities in the quenching liquid. In this way, the accumulation rate of impurities in the quenching liquid is not too fast during continuous heat treatment operations, so that the quenching liquid does not need to be treated frequently, improving the continuity of heat treatment. At the same time, the extracted quenching liquid is processed and circulated to ensure the long-term performance of the quenching liquid, avoid impurities from affecting the heat treatment quality of the workpiece, and increase the use effect of the device.

[0085] It should be noted that when treating the oxide scale brought in by the workpiece, the sludge and gum produced by the oxidation of the quenching liquid, the device is equipped with two identical processing paths. The two paths can be switched. When cleaning is required when separating impurities on a single path, the device can be switched with the control valve 711 without stopping the equipment, which further increases the continuity of the heat treatment of the device.

[0086] The oxide scale brought in by the workpiece, the sludge and gum produced by oxidation in the quenching fluid are treated separately, which further enhances the effectiveness of the equipment.

[0087] Reference Figure 2 , Figure 4 , Figure 9 and Figure 10 In a preferred embodiment, the quenching protection module 9 further includes:

[0088] Multiple guide slots 905 are provided on the top cover plate 15, and composite plate one 903 and composite plate two 904 are respectively provided on the multiple guide slots 905;

[0089] The bracket 909 is mounted on the top cover plate 15. The bracket 909 is equipped with two active motors 911. The output shafts of the two active motors 911 are connected to double grooved pulleys 910 through couplings.

[0090] In this invention, the quenching protection module 9 further includes:

[0091] Two connecting wire harnesses 908 are respectively set on two double grooved wire pulleys 910. One end of each of the two connecting wire harnesses 908 is provided with a connector 912. Both connectors 912 are set on the composite plate 903.

[0092] Two fasteners 907 are provided on the top cover plate 15. Each of the two fasteners 907 is provided with a pull-back spring rod 913. One end of each pull-back spring rod 913 is provided on the composite plate 903.

[0093] In this invention, the quenching protection module 9 further includes:

[0094] Two connecting cables 914 are respectively set on two double grooved reels 910, and one end of each connecting cable 914 is set on the composite plate 904.

[0095] Two telescopic springs 906 are respectively set on two fixing parts 907. One end of each of the two telescopic springs 906 is set on the second composite plate 904. The second composite plate 904 and the first composite plate 903 are both located above the quenching port.

[0096] Specifically, during heat treatment quenching, the workpiece moves above the quenching port. At this time, the drive motor 911 operates, driving the double-grooved reel 910 to rotate. This causes the double-grooved reel 910 to tighten and loosen the connecting harness 908 and the connecting cable 914 (the winding directions of the connecting harness 908 and the connecting cable 914 are opposite; tightening the connecting harness 908 loosens the connecting cable 914, and vice versa). When the connecting harness 908 tightens, it pulls the connector 912 and the composite plate 90... 3. The return spring rod 913 is stretched, and the connecting cable 914 is loosened. This is to cooperate with the push of the telescopic spring 906 to move the second plate 904, thereby moving the first plate 903 and the second plate 904 away from each other, so that the quenching port opens. This is to cooperate with the telescopic cylinder 11 to allow the workpiece to enter the quenching chamber. Then the active motor 911 runs in reverse, the connecting harness 908 is loosened, and the connecting cable 914 is tightened, so that the first plate 903 and the second plate 904 merge together to close the quenching chamber 14.

[0097] After closing, the negative pressure air pump 901 runs to expel the residual air inside the quenching liquid tank 14. At the same time, the nitrogen pump 902 fills the inside with inert gas, and the negative pressure air pump 901 continues to run to exhaust the vaporized state of the quenching liquid and the dense smoke generated during subsequent quenching until the quenching heat treatment is completed.

[0098] In specific application scenarios, the quenching protection module 9 is suitable for the quenching protection of spinning pulleys. That is, when the workpiece is heat-treated and quenched, the quenching protection module 9 can close the quenching liquid tank 14 to prevent the quenching liquid from mixing with air and forming an open flame or a large amount of dense smoke after the hot workpiece causes the quenching liquid to vaporize violently. At the same time, when the device is closed to block contact, the device can discharge the residual air and vaporized quenching liquid inside the closed quenching liquid tank 14 through the negative pressure air pump 901, and fill the quenching liquid tank 14 with inert gas through the nitrogen pump 902 to further avoid the possibility of flame generation during quenching, thereby increasing the safety of the device.

[0099] It should be noted that by rapidly treating the oil fumes, the device can prevent impurities such as carbon black in the oil fumes from adhering to the surface of the workpiece before it enters the quenching liquid during quenching, thereby avoiding uneven quenching or the formation of soft spots.

[0100] A continuous heat treatment method for spinning pulleys, using a continuous heat treatment apparatus for spinning pulleys as described above, includes the following steps:

[0101] Step 1: Place the workpiece on the workpiece holder 10, and run the servo motor 4. The servo motor 4 drives the processing turntable 5 to move the workpiece to the heating coil 12 for heating.

[0102] Step 2: During heating, the heat processor 2 operates and heats the heating coil 12 through the connection of the coil connector 13. At the same time, the telescopic cylinder 11 at the corresponding part operates to move the workpiece on the workpiece fixing seat 10 into the heating coil 12 for heating.

[0103] Step 3: During heat treatment quenching, the workpiece is moved above the quenching port. At this time, the active motor 911 runs, driving the double-groove pulley 910 to rotate, so that the double-groove pulley 910 tightens and loosens the connecting harness 908 and the connecting cable 914. When the connecting harness 908 tightens, it pulls the connector 912 and the first plate 903, and stretches the return spring rod 913. At the same time, the connecting cable 914 loosens, which, in conjunction with the push of the telescopic spring 906, moves the second plate 904, so that the first plate 903 and the second plate 904 move away from each other, so that the quenching port opens, and the workpiece enters the quenching chamber in conjunction with the telescopic cylinder 11. Afterwards, the active motor 911 runs in the opposite direction, the connecting harness 908 loosens, and the connecting cable 914 tightens, so that the first plate 903 and the second plate 904 merge, thus closing the quenching chamber 14.

[0104] After closing, the negative pressure air pump 901 runs to expel the residual air inside the quenching liquid tank 14. At the same time, the nitrogen pump 902 fills the inside with inert gas, and the negative pressure air pump 901 continues to run to exhaust the vaporized state of the quenching liquid and the dense smoke generated during subsequent quenching until the quenching heat treatment is completed.

[0105] Step 4: During the quenching process, the delivery pump 701 operates. The delivery pump 701 rapidly draws quenching fluid from the workpiece submersion area through the annular pipe 707 and its suction holes 706. This allows the oxide scale, sludge, and colloids brought in by the workpiece to enter the distribution pipe 708 and then into the magnetic ionization chamber 702. At this time, the branch pump 712 operates, transporting the quenching fluid containing impurities from the distribution pipe 708 to the branch pipe 713, and further to the inner annular nozzle 714. This allows the quenching fluid containing impurities sprayed from the inner annular nozzle 714 to flow in opposite directions to the quenching fluid containing impurities entering the magnetic ionization chamber 702 through the distribution pipe 708. This increases the residence time of the impurity-containing quenching fluid inside the magnetic chamber, allowing the magnetic roller 716 to separate the ferromagnetic oxide scale from the impurities. The quenching fluid then enters the secondary separation chamber 704 through the connecting hose 709. At this time, the microbubble generator 720 operates to produce microbubbles, causing the sludge and colloids produced by the oxidation of the quenching fluid to float to the surface. Then, the general-purpose motor 719 operates, driving the scraping ring frame 723 to rotate and separate and scrape the sludge and colloids produced by the oxidation of the quenching fluid. As it rotates, the sludge and colloids are collected inside the oil and colloid storage chamber 722, and then transported back to the quenching fluid chamber 14 through the return pipe 717 and the circulation end pipe 705 until the quenching heat treatment is completed.

[0106] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous heat treatment apparatus for spinning pulleys, characterized in that, include: A heat treatment frame (1) is provided with a quenching liquid tank (14), and a top cover plate (15) is provided on the quenching liquid tank (14), with a quenching port on the top cover plate (15). A fixed bracket (3) is set on the heat treatment frame (1). A servo motor (4) is set on the fixed bracket (3). The output shaft of the servo motor (4) is connected to the processing turntable (5) through a coupling. Multiple telescopic cylinders (11) are set on the processing turntable (5). Each of the multiple telescopic cylinders (11) has a workpiece fixing seat (10) at its output end. Each of the multiple workpiece fixing seats (10) has a pulley body (6). A heat processor (2) is disposed on a heat treatment frame (1), and a heat treatment enclosure (8) is disposed on the heat processor (2) and the heat treatment frame (1). Two coil connectors (13) are provided on the heat processor (2), and the same heating coil (12) is provided on the two coil connectors (13). Quenching and impurity removal unit (7) is set on quenching liquid tank (14). The quenching and impurity removal unit (7) includes an annular ring pipe (707), two magnetic separation chambers (702) and two secondary separation chambers (704). The two secondary separation chambers (704) are located below the two magnetic separation chambers (702). Multiple liquid suction holes (706) are opened on the annular ring pipe (707). Quenching protection module (9) is set on quenching liquid tank (14). The quenching protection module (9) includes composite plate one (903), composite plate two (904), negative pressure air pump (901) and nitrogen pump (902). The quenching and impurity removal unit (7) further includes: a delivery pump (701), which is installed on the quenching liquid tank (14), the annular ring pipe (707) is installed at the input end of the delivery pump (701), and a diversion pipe (708) is installed at the output end of the delivery pump (701), with two magnetic ionization chambers (702) respectively installed at the two output ends of the diversion pipe (708); and two control valves (711), both of which are installed on the diversion pipe (708). Above; two threaded bases (715), which are respectively disposed on two magnetic separation chambers (702), and each of the two threaded bases (715) is provided with a magnetic suction ring roller (716), which is located inside the two magnetic separation chambers (702); two branch pumps (712), which are respectively disposed on a diversion pipe (708), and the output end of each of the two branch pumps (712) is provided with a branch pipe ( 713); two inner ring nozzles (714), the two inner ring nozzles (714) are respectively set on two branch pipes (713), and multiple nozzle holes are opened on the two inner ring nozzles (714), and the two inner ring nozzles (714) are respectively set inside the two magnetic separation chambers (702); multiple electric telescopic rods (703), the multiple electric telescopic rods (703) are all set on the heat treatment frame (1), and the output ends of two adjacent electric telescopic rods (703) are all set with the same mounting bracket (710); two disassembly motors (718), the two disassembly motors (718) are respectively set on the two mounting brackets (710), the two threaded bases (715) are respectively set on the output shafts of the two disassembly motors (718) through couplings, and connecting hoses (709) are provided on the two threaded bases (715), and two secondary separation chambers (704) are respectively set on the two connecting hoses (709) and the heat treatment frame (1).

2. The continuous heat treatment apparatus for spinning pulleys according to claim 1, characterized in that, The quenching and impurity removal unit (7) further includes: two microbubble generators (720), which are respectively installed on two secondary separation chambers (704); two oil and glue storage chambers (722), which are respectively installed on two secondary separation chambers (704), and each of the two oil and glue storage chambers (722) is provided with a tie rod (721); two return pipes (717), which are respectively installed on two secondary separation chambers (704), and one end of each of the two return pipes (717) is provided with the same circulation end pipe (705), and the output end of the circulation end pipe (705) is connected to the interior of the quenching liquid chamber (14).

3. A continuous heat treatment apparatus for spinning pulleys according to claim 2, characterized in that, The quenching and impurity removal unit (7) further includes: two scraping ring frames (723), which are located inside the two secondary separation chambers (704) respectively, and the inner walls of the two scraping ring frames (723) are in contact with the outer walls of the two oil and glue storage chambers (722); two general-purpose motors (719), which are respectively installed on the two secondary separation chambers (704), and the two scraping ring frames (723) are respectively installed on the output shafts of the two general-purpose motors (719) through couplings.

4. A continuous heat treatment apparatus for spinning pulleys according to claim 3, characterized in that, The quenching protection module (9) further includes: multiple guide slots (905), all of which are opened on the top cover plate (15), and the first composite plate (903) and the second composite plate (904) are respectively set on the multiple guide slots (905); a support member (909), which is set on the top cover plate (15), and the support member (909) is provided with two active motors (911), and the output shafts of the two active motors (911) are connected to double grooved pulleys (910) through couplings.

5. A continuous heat treatment apparatus for spinning pulleys according to claim 4, characterized in that, The quenching protection module (9) further includes: two connecting wire harnesses (908), which are respectively set on two double grooved wire pulleys (910), and each of the two connecting wire harnesses (908) is provided with a connector (912) at one end, and the two connectors (912) are both set on the first composite plate (903); two fixing parts (907), which are both set on the top cover plate (15), and each of the two fixing parts (907) is provided with a pullback spring rod (913), and one end of each pullback spring rod (913) is set on the first composite plate (903).

6. A continuous heat treatment apparatus for spinning pulleys according to claim 5, characterized in that, The quenching protection module (9) further includes: two connecting cables (914), which are respectively set on two double-groove spools (910), and one end of each of the two connecting cables (914) is set on the second composite plate (904); two telescopic springs (906), which are respectively set on two fixing parts (907), and one end of each of the two telescopic springs (906) is set on the second composite plate (904), and the second composite plate (904) and the first composite plate (903) are both located above the quenching port.

7. A continuous heat treatment method for spinning pulleys, using a continuous heat treatment apparatus for spinning pulleys as described in claim 6, characterized in that, Includes the following steps: Step 1: Place the workpiece on the workpiece holder (10), and run the servo motor (4). The servo motor (4) drives the processing turntable (5) to move the workpiece to the heating coil (12) for heating. Step 2: During heating, the heat processor (2) runs and heats the heating coil (12) through the connection of the coil connector (13). At the same time, the telescopic cylinder (11) at the corresponding part runs to move the workpiece on the workpiece fixing seat (10) into the heating coil (12) for heating. Step 3: During heat treatment quenching, the workpiece is moved above the quenching port. At this time, the quenching protection module (9) is activated, which causes the first plate (903) and the second plate (904) to unfold, so as to cooperate with the telescopic cylinder (11) to allow the workpiece to enter the quenching chamber and close the first plate (903) and the second plate (904) until the quenching heat treatment is completed. Step 4: During the quenching process, the quenching and impurity removal unit (7) is in operation to quickly treat the oxide scale brought in by the workpiece and the sludge and colloids generated by the oxidation of the quenching liquid. After treatment, the quenching liquid is circulated back until the quenching heat treatment is completed.

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