Swing roller press type plate spring camber surface strengthening and quenching device

Abstract

The present application relates to plate spring heat treatment technical field, disclose a kind of swing roller press type plate spring camber surface strengthening quenching device, including quenching box, the upper portion of quenching box is slidably connected with lifting platform, the upper portion of lifting platform is provided with rotatable arc-shaped mould platform, the top of quenching box is provided with cross, the bottom of cross is fixedly connected with bearing seat one, motor one is fixedly installed on the side of bearing seat one, the output shaft of motor one is fixedly connected with the axle rod of bearing seat one, the axle rod outer wall of bearing seat one is fixedly connected with rocking frame, the bottom inner wall of rocking frame is rotatably connected with multiple pressure rollers, by the ascending action of cross, using the engagement of wedge-shaped platform and hook plate, automatically drive arc-shaped mould platform to rotate and tilt to make plate spring slide and unload, high-temperature plate spring can be quickly unloaded without manual intervention, avoid operating personnel to carry out pick-up operation in high-temperature quenching environment, reduce labor intensity and safety risk, effectively improve production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of leaf spring heat treatment technology, specifically relating to a swing roller pressing type leaf spring arc surface strengthening quenching device. Background Technology

[0002] The oscillating roller pressing type leaf spring arc surface strengthening quenching device belongs to the field of leaf spring heat treatment and surface strengthening technology. It is mainly used for quenching and surface integrity improvement of leaf spring elastic elements in heavy vehicles, railway locomotives and engineering machinery. The device achieves the synergistic processing of leaf spring contour forming, cooling uniformity and surface structure refinement by applying dynamic oscillating roller pressing to the arc surface of the leaf spring during the quenching and cooling process. It integrates arc surface pressing, quenching and cooling and deformation strengthening functions, and is suitable for the batch heat treatment needs of various variable cross-section or few leaf springs. It can effectively improve the fatigue strength and dimensional stability of the product.

[0003] In actual production operations, existing leaf spring quenching equipment typically involves manually or mechanically transferring the straight leaf spring, heated to the process temperature, to the surface of a forming mold. Then, a hydraulic cylinder or lead screw mechanism drives a pressure head downwards, pressing the leaf spring against the mold's curved surface. Once the contour is fixed, the spring and mold are transferred together to a quenching medium tank for rapid cooling. After the leaf spring is fully immersed in the quenching liquid, some equipment activates a simple oscillating or vibrating mechanism to agitate the medium and improve cooling uniformity. However, the pressure head is mostly in a static pressure-holding state at this stage, unable to apply dynamic force to the leaf spring surface. After quenching and holding, the mold and leaf spring are lifted off the liquid surface. Once the temperature drops to an operable range, the leaf spring is removed from the mold cavity manually or using a simple ejection mechanism, and then transferred to a separate tempering process.

[0004] In existing leaf spring arc surface quenching technology, the leaf spring lacks continuous pressure restraint when plastically immersed in the liquid. It is prone to shaking and displacement due to the buoyancy or flow impact of the quenching liquid, resulting in uneven cooling and exacerbating the risk of deformation and cracking. After quenching, manual removal of parts is required. Operators work in high temperature and quenching liquid splashing environment, which is labor-intensive, has high safety risks, and manual operation restricts production efficiency.

[0005] Therefore, the present invention provides a swing roller pressing type arc surface strengthening quenching device for leaf springs. Summary of the Invention

[0006] To overcome the shortcomings of the prior art: to solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The swing roller pressing type leaf spring arc surface strengthening quenching device of the present invention includes a quenching box, a lifting platform slidably connected above the quenching box, a rotatable arc-shaped mold platform set above the lifting platform, a cross set directly above the quenching box, a bearing seat fixedly connected to the bottom of the cross, a motor fixedly installed on one side of the bearing seat, the output shaft of the motor fixedly connected to the shaft of the bearing seat, a swing frame symmetrically fixedly connected to the outer wall of the shaft of the bearing seat, a plurality of pressure rollers rotatably connected to the bottom inner wall of the swing frame, the pressure rollers being arranged in an arc shape, a power component for driving the cross to move up and down is set on both sides of the cross, a travel restriction component is set on both sides of the lifting platform, the travel restriction component can restrict the lifting platform from moving downward, an anti-rotation component is set on both sides of the arc-shaped mold platform to restrict the rotation of the arc-shaped mold platform, and a lifting component for driving the arc-shaped mold platform to tilt and rotate is set on one side of the cross.

[0008] Preferably, the power assembly includes two support plates, which are fixedly connected to the upper sides of the quenching box. A second motor is fixedly installed at the bottom of the support plate, and a mounting base is fixedly connected to the upper part of each support plate. A threaded rod is rotatably connected to the inner wall of each mounting base. The output shaft of the second motor is fixedly connected to the bottom end of the threaded rod. An internally threaded slider is slidably connected to the inner wall of each mounting base. The inner wall of the internally threaded slider is threadedly connected to the outer wall of the threaded rod. The two ends of the cross are fixedly connected to one side of the two internally threaded sliders respectively.

[0009] Preferably, gear 1 is fixedly connected to both ends of the shaft of multiple pressure rollers, and arc-shaped toothed plates are fixedly connected to the lower ends of both ends of bearing housing 1, and the teeth of multiple gear 1 can simultaneously mesh with the teeth of the arc-shaped toothed plates.

[0010] Preferably, the limiting component includes two movable blocks, which are fixedly connected to both sides of the lifting platform. Side sliding grooves are provided on both inner walls of the quenching box. The movable blocks and the side sliding grooves are slidably connected and adapted to each other. A return spring is fixedly connected between the bottom of the movable block and the bottom side of the side sliding groove. Rotating shafts are symmetrically rotatably connected to both sides of the upper part of the lifting platform. A positioning plate is fixedly connected to the outer wall of each rotating shaft.

[0011] Preferably, the anti-rotation component includes two clamping seats, which are fixedly connected to the upper sides of the lifting platform. The inner walls of the clamping seats are rotatably connected to a main rotating shaft. One end of the main rotating shaft is fixedly connected to the two sides of the arc-shaped mold table, and the outer wall of the other end of the main rotating shaft is fixedly connected to a balance plate. The bottom of both sides of the balance plate is fitted with a locking rod, which is slidably connected to the upper part of the lifting platform. Unlocking components are provided on the upper sides of both sides of the lifting platform. The unlocking components can drive the rotating shaft to rotate and drive the locking rod to move laterally.

[0012] Preferably, the unlocking component includes two synchronous belts. The inner wall of the upper surface of the lifting platform has two sets of movable grooves. Limiting sliders are fixedly connected to the bottom of both sides of the synchronous belts. The limiting sliders are slidably connected to the movable grooves and are mutually adapted. Telescopic rods are fixedly connected inside the movable grooves. One end of the telescopic rod is fixedly connected to one end of one of the limiting sliders. A rack is fixedly connected to one side of the synchronous belts. A second gear is fixedly connected to the bottom outer wall of the rotating shaft. The teeth of the second gear mesh with the teeth of the corresponding rack.

[0013] Preferably, the unlocking assembly also includes two fixed pulleys, both of which are rotatably connected to the upper surface of the lifting platform. The inner side of the timing belt is respectively connected to the outer wall of the fixed pulleys, and the end of the timing belt away from the rack is fixedly connected to the outer wall of the locking rod.

[0014] Preferably, the hook assembly includes a connecting seat, which is fixedly connected to the bottom of the cross. A bearing seat two is fixedly connected to one side of the connecting seat. A hook plate is fixedly connected to the outer wall of the shaft of the bearing seat two. A torsion spring two is fixedly connected between the inner side of the hook plate and one side of the connecting seat. A wedge-shaped platform is fixedly connected to one side of the arc-shaped mold table. The positions and shapes of the hook plate and the wedge-shaped platform are mutually corresponding and adapted. An inclined slide is provided on one side of the quenching box.

[0015] Preferably, the outer walls of both ends of the shaft of the bearing housing 2 are fixedly connected with side connectors, and the two sides of the connecting seat are fixedly connected with resisting members, the top of the resisting members being in contact with the bottom of the side connectors.

[0016] Preferably, a connecting frame plate is fixedly connected to the upper sides of both sides of the lifting platform, and a torsion spring is fixedly connected to the upper side of one side of the balance plate. The end of the torsion spring away from the balance plate is fixedly connected to one side of the connecting frame plate.

[0017] The beneficial effects of this invention are as follows: 1. The swing roller pressing type leaf spring arc surface strengthening quenching device of the present invention forms a double lock on the lifting platform and the arc-shaped mold table during the pressing stage through the limiting component and the anti-rotation component. The limiting component restricts the translational degree of freedom of the lifting platform, and the anti-rotation component restricts the rotational degree of freedom of the arc-shaped mold table. The two work together to ensure that the arc-shaped mold table remains stable and stationary when the pressure roller presses down, providing stable forming support for the leaf spring, thereby ensuring that the leaf spring is accurately pressed and formed along the arc surface of the arc-shaped mold table. After pressing is completed, the restrictions are unlocked, so that the lifting platform and the arc-shaped mold table simultaneously obtain the degree of freedom of movement and smoothly descend into the quenching box to complete the quenching operation. After the quenching is completed and the device rises and resets, the limiting component automatically returns to the locked state, and the anti-rotation component remains in the unlocked state, so that the arc-shaped mold table can rotate and tilt through the hook component to carry out the unloading operation.

[0018] 2. The swing roller-type leaf spring arc surface strengthening quenching device of the present invention, wherein the unlocking component drives the synchronous belt to move through a single retraction action of the telescopic rod, and the rack on one side drives the second gear to rotate, causing the locking plate to flip and disengage from the wall of the quenching box, thereby releasing the limit lock on the lifting platform. At the same time, the other end of the synchronous belt pulls the locking rod to slide laterally, causing its top end to disengage from the balance plate, thereby releasing the rotation restriction on the arc mold table. Thus, the lifting platform and the arc mold table simultaneously obtain the freedom of movement, simplifying the operation process and effectively improving the efficiency of quenching operation.

[0019] 3. The swing roller pressing type leaf spring arc surface strengthening quenching device of the present invention uses the lifting action of the cross to automatically drive the arc mold table to rotate and tilt, so that the leaf spring slides down for unloading, through the engagement of the wedge-shaped platform and the hook plate. Its core function and effect are: to realize the rapid unloading of high temperature leaf springs without manual intervention, avoid operators from performing part handling operations in high temperature quenching environment, reduce labor intensity and safety risks, and shorten the cycle time of a single quenching operation, effectively improving production efficiency. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a schematic diagram of the structure of the pressure roller in this invention; Figure 3 This is a schematic diagram of the structure at the arc-shaped toothed plate in this invention; Figure 4 This is a schematic diagram of the structure at the movable block in this invention; Figure 5 This is a schematic diagram of the structure at the card slot plate in this invention; Figure 6 This is a schematic diagram of the structure at the balance plate in this invention; Figure 7 This is a schematic diagram of the structure at the synchronous belt in this invention; Figure 8 This is a schematic diagram of the structure at the wedge-shaped platform in this invention; Figure 9 This is a schematic diagram of the connecting seat structure in this invention; Figure 10 This is a schematic diagram of the hook plate structure in this invention.

[0022] In the diagram: 1. Quenching box; 2. Lifting platform; 3. Arc-shaped mold table; 4. Bearing seat one; 5. Swing frame; 6. Pressure roller; 7. Cross; 8. Motor one; 9. Internal threaded slider; 10. Mounting base; 11. Threaded rod; 12. Support plate; 13. Motor two; 14. Gear one; 15. Arc-shaped toothed plate; 16. Side slide groove; 17. Movable block; 18. Return spring; 19. Rotating shaft; 20. Positioning plate; 21. Clamp 21. Support; 22. Main shaft; 23. Balance plate; 24. Locking rod; 25. Synchronous belt; 26. Telescopic rod; 27. Movable groove; 28. Limiting slider; 29. ​​Fixed pulley; 30. Rack; 31. Gear II; 32. Connecting frame plate; 33. Torsion spring I; 34. Wedge platform; 35. Connecting seat; 36. Bearing seat II; 37. Hook plate; 38. Torsion spring II; 39. Resistance component; 40. Side connector; 41. Inclined slide. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 10 As shown, the present invention provides a technical solution: a swing roller pressing type leaf spring arc surface strengthening quenching device, including a quenching box 1, a lifting platform 2 slidably connected above the quenching box 1, a rotatable arc-shaped mold platform 3 arranged above the lifting platform 2, a cross 7 arranged directly above the quenching box 1, a bearing seat 4 fixedly connected to the bottom of the cross 7, a motor 8 fixedly installed on one side of the bearing seat 4, the output shaft of the motor 8 fixedly connected to the shaft of the bearing seat 4, a swing frame 5 symmetrically fixedly connected to the outer wall of the shaft of the bearing seat 4, a plurality of pressure rollers 6 rotatably connected to the bottom inner wall of the swing frame 5, the pressure rollers 6 arranged in an arc shape, power components that drive the cross 7 to move up and down are arranged on both sides of the cross 7, a travel restriction component is arranged on both sides of the lifting platform 2, the travel restriction component can restrict the lifting platform 2 from moving downward, anti-rotation components that restrict the arc-shaped mold platform 3 from rotating are arranged on both sides of the arc-shaped mold platform 3, and a lifting component that can drive the arc-shaped mold platform 3 to tilt and rotate is arranged on one side of the cross 7.

[0025] During operation: First, the flat leaf spring workpiece is heated to the austenitizing temperature (900°C-950°C). Then, the high-temperature leaf spring is transferred to the upper surface of the arc-shaped mold 3 and placed flat. Next, quenching fluid is added to the quenching box 1, and the power unit is activated to drive the cross 7 to lower the swing frame 5 and pressure roller 6 as a whole. The pressure roller 6 first contacts the upper surface of the leaf spring and continues to press down. Utilizing the arc-shaped arrangement of the pressure roller 6, the flat leaf spring is gradually pressed into an arc-shaped profile along the arc surface of the arc-shaped mold 3. During the process, the limiting component locks the lifting platform 2, keeping the arc-shaped mold 3 stationary after being pressed by the pressure roller 6, preventing it from sliding down the side wall of the quenching box 1. This ensures that the pressure roller 6 can apply sufficient forming pressure to the leaf spring and press it into an arc shape. At the same time, the anti-rotation component locks the arc-shaped mold 3 circumferentially, keeping the arc-shaped mold 3 stable and non-deflecting during the plastic deformation of the leaf spring under pressure. This ensures that the leaf spring is accurately formed along the arc surface of the arc-shaped mold 3 and avoids pressing deviations caused by mold deflection.

[0026] After pressing and forming, the limiting component releases the limiting lock on the lifting platform 2, and the anti-rotation component simultaneously releases the rotation restriction on the arc-shaped mold 3. Then, driven by the power component, the pressure roller 6 continues to apply downward pressure, pressing the leaf spring and the arc-shaped mold 3 together with the lifting platform 2 to move smoothly downwards, gradually entering the quenching box 1 so that the leaf spring is completely immersed in the quenching liquid. During this descent, the pressure roller 6 always presses the upper surface of the leaf spring, ensuring it is tightly pressed against the arc surface of the arc-shaped mold 3, ensuring a stable immersion process and preventing the leaf spring from shaking or shifting position. After the spring is fully inserted into the quenching box 1, the motor 8 drives the swing frame 5 to move the pressure roller 6 back and forth in the quenching liquid, continuously rolling and strengthening the arc surface of the leaf spring. The back and forth swing of the pressure roller 6 can stir the quenching liquid, enhance the convective heat transfer between the arc surface of the leaf spring and the quenching liquid, and improve the cooling uniformity. On the other hand, the dynamic rolling and pressing can form a compressive stress layer on the surface of the leaf spring and refine the surface grains, significantly improving fatigue strength and surface hardness. At the same time, it can eliminate the internal stress generated by the rapid cooling during quenching and effectively suppress leaf spring deformation and cracking. After quenching, the power component drives the cross 7 to rise and reset, and the lifting platform 2 and the arc-shaped mold platform 3 rise and reset synchronously. During this process, the leaf spring is always positioned in the arc-shaped inner wall of the arc-shaped mold platform 3. When the lifting platform 2 and the arc-shaped mold platform 3 are reset to their initial positions, the cross 7 continues to rise, and the hook component moves accordingly, causing the arc-shaped mold platform 3 to rotate so that one side gradually tilts downward. The formed leaf spring automatically slides down along the inclined arc surface of the arc-shaped mold platform 3 under the action of gravity, completing the unloading.

[0027] like Figures 2 to 3As shown, the power assembly includes two support plates 12, which are fixedly connected to the upper sides of the quenching box 1. A second motor 13 is fixedly installed at the bottom of the support plate 12. A mounting base 10 is fixedly connected to the upper part of each support plate 12. A threaded rod 11 is rotatably connected to the inner wall of each mounting base 10. The output shaft of the second motor 13 is fixedly connected to the bottom end of the threaded rod 11. An internal threaded slider 9 is slidably connected to the inner wall of each mounting base 10. The inner wall of the internal threaded slider 9 is threadedly connected to the outer wall of the threaded rod 11. The two ends of the cross 7 are fixedly connected to one side of the two internal threaded sliders 9 respectively.

[0028] During operation: Two motors 13 are started. The output shaft of motor 13 drives the threaded rod 11 to rotate inside the mounting base 10. Through the threaded engagement between the threaded rod 11 and the internal threaded slider 9, the internal threaded sliders 9 on both sides are driven to slide synchronously along the inner wall of the mounting base 10. The cross 7 between the two internal threaded sliders 9 then drives the swing frame 5 and the pressure roller 6 to rise and fall as a whole. By controlling the forward and reverse rotation of motor 13, the downward pressing and upward reset of the cross 7 are achieved.

[0029] like Figures 2 to 3 As shown, gears 14 are fixedly connected to both ends of the shafts of multiple pressure rollers 6, and arc-shaped toothed plates 15 are fixedly connected to the lower ends of both ends of the bearing housing 4. The teeth of multiple gears 14 can simultaneously mesh with the teeth of the arc-shaped toothed plates 15.

[0030] During operation: When the pressure roller 6 presses down on the leaf spring and drives the leaf spring and the arc-shaped mold 3 into the quenching box 1, the pressure roller 6 remains in a pressed state under the drive of the power component. After the leaf spring is fully immersed in the quenching liquid, the starter motor 8 drives the swing frame 5 to make the pressure roller 6 swing back and forth in the quenching liquid. During the swing, the gears 14 fixed at both ends of the shaft of the pressure roller 6 swing synchronously with the pressure roller 6 and roll along the tooth surface of the arc-shaped tooth plate 15 fixed below both ends of the bearing seat 4, thereby causing the pressure roller 6 to rotate around its own shaft. This rotation causes rolling friction between the roller surface of the pressure roller 6 and the surface of the leaf spring. Compared with sliding friction, rolling friction can effectively reduce resistance, reduce roller surface wear, and make the circumferential surface of the pressure roller 6 participate in the rolling operation evenly, avoiding local fatigue damage caused by long-term pressure in a single area. At the same time, the rotation of the pressure roller 6, combined with the reciprocating swing of the swing frame 5, makes the rolling trajectory more uniform, further improving the arc surface strengthening effect and the consistency of surface quality.

[0031] like Figures 4 to 5As shown, the traffic restriction component includes two movable blocks 17, which are fixedly connected to both sides of the lifting platform 2. The inner walls of both sides of the quenching box 1 are provided with side sliding grooves 16. The movable blocks 17 and the side sliding grooves 16 are slidably connected and adapted to each other. A return spring 18 is fixedly connected between the bottom of the movable blocks 17 and the bottom side of the side sliding groove 16. The upper sides of the lifting platform 2 are symmetrically connected to rotating shafts 19, and the outer walls of the rotating shafts 19 are fixedly connected to positioning plates 20.

[0032] During operation: In the initial state, the lifting platform 2 is located above the top of the quenching box 1 and is not immersed in the quenching liquid. The positioning plate 20 rotates around the rotating shaft 19 so that its bottom end rests against the top wall of the quenching box 1. At this time, the bottom end of the positioning plate 20 is supported by the top wall of the quenching box 1. Because the positioning plate 20 is blocked by the wall of the quenching box 1, it cannot move downward, thus preventing the lifting platform 2 from moving downward and keeping the lifting platform 2 stationary. After the pressure roller 6 presses and forms the shape, the limiting component releases the restriction on the lifting platform 2, and the positioning plate 20 rotates around the rotating shaft 19, so that the bottom end of the positioning plate 20... The lifting platform 2 detaches from the top wall of the quenching box 1 and clears the downward passage. At this time, under the downward pressure of the pressure roller 6, the lifting platform 2 can slide downward along the side slide groove 16 through the movable block 17, and the return spring 18 is compressed and stores energy. When the quenching is completed, the lifting platform 2 rises and resets with the cross 7. The return spring 18 releases elastic potential energy to assist in pushing the movable block 17 to slide upward along the side slide groove 16, so that the lifting platform 2 can smoothly rise back to the initial position. After the lifting platform 2 is reset, the locking plate 20 rotates around the rotating shaft 19 to reset, and its bottom end rests on the top wall of the quenching box 1 again, restoring the limit lock on the lifting platform 2.

[0033] like Figures 5 to 7 As shown, the anti-rotation assembly includes two clamping seats 21, which are fixedly connected to the upper sides of the lifting platform 2. The inner walls of the clamping seats 21 are rotatably connected to a main rotating shaft 22. One end of the main rotating shaft 22 is fixedly connected to the two sides of the arc-shaped mold table 3, and the outer wall of the other end of the main rotating shaft 22 is fixedly connected to a balance plate 23. The bottom of both sides of the balance plate 23 is fitted with a locking rod 24, which is slidably connected to the upper part of the lifting platform 2. Unlocking components are provided on the upper sides of both sides of the lifting platform 2. The unlocking components can drive the rotating shaft 19 to rotate and drive the locking rod 24 to move laterally.

[0034] During operation: In the initial state, the tops of the locking rods 24 abut against the lower sides of the balance plate 23, preventing the balance plate 23 from deflecting around the axis of the main rotating shaft 22. The main rotating shaft 22 is thus locked and cannot rotate, keeping the arc-shaped mold table 3 in a stable, stationary state, preventing deflection. When the pressure roller 6 presses down on the leaf spring for pressing and forming, the anti-rotation assembly uses the locking rods 24 to hold and lock the balance plate 23, ensuring the arc-shaped mold table 3 maintains a stable horizontal posture. This ensures the leaf spring can be accurately formed along the arc surface of the arc-shaped mold table 3, avoiding pressing deviations caused by shaking or deflection of the arc-shaped mold table 3. After pressing and forming, it is necessary to... When the lifting platform 2 moves the arc-shaped mold 3 downward into the quenching box 1, the unlocking components operate synchronously. On one hand, they drive the rotating shaft 19 to rotate, causing the bottom end of the locking plate 20 to disengage from the top wall of the quenching box 1 and clear the downward passage. On the other hand, they drive the locking rods 24 on both sides to slide laterally along the upper direction of the lifting platform 2, causing the top end of the locking rod 24 to disengage from the bottom of the balance plate 23, releasing the restraint and locking of the balance plate 23. At this time, the main rotating shaft 22 returns to a free rotation state, and the rotation restriction of the arc-shaped mold 3 is released synchronously. In this way, the lifting platform 2 and the arc-shaped mold 3 can be smoothly pressed down into the quenching box 1, allowing the leaf spring to perform the quenching operation. During the pressing stage, the lifting platform 2 and the arc-shaped mold 3 are locked in place by the limiting component and the anti-rotation component. The limiting component restricts the translational freedom of the lifting platform 2, while the anti-rotation component restricts the rotational freedom of the arc-shaped mold 3. The two work together to ensure that the arc-shaped mold 3 remains stable and stationary when the pressure roller 6 presses down, providing stable forming support for the leaf spring and ensuring that the leaf spring is accurately pressed and formed along the arc surface of the arc-shaped mold 3. After pressing is completed, the limiting component is unlocked, allowing the lifting platform 2 and the arc-shaped mold 3 to simultaneously gain motion freedom and smoothly descend into the quenching box 1 to complete the quenching operation. After quenching is completed and the platform is raised and reset, the limiting component automatically returns to the locked state, while the anti-rotation component remains unlocked, so that the arc-shaped mold 3 can rotate and tilt through the hook component to complete the unloading.

[0035] like Figures 5 to 7 As shown, the unlocking assembly includes two synchronous belts 25. The inner wall of the upper surface of the lifting platform 2 is provided with two sets of movable grooves 27. Limiting sliders 28 are fixedly connected to the bottom of both sides of the synchronous belts 25. The limiting sliders 28 and the movable grooves 27 are slidably connected and mutually adapted. Telescopic rods 26 are fixedly connected inside the movable grooves 27. One end of the telescopic rod 26 is fixedly connected to one end of one of the limiting sliders 28. A rack 30 is fixedly connected to one side of the synchronous belts 25. A gear 31 is fixedly connected to the bottom outer wall of the rotating shaft 19. The teeth of the gear 31 mesh with the teeth of the corresponding rack 30.

[0036] During operation: In the initial state, the telescopic rod 26 is extended, pressing against the limiting slider 28 to keep the synchronous belt 25 stationary; when it is necessary to release the restriction of the limiting component on the lifting platform 2, the telescopic rod 26 retracts, pulling the limiting slider 28 fixedly connected to it to slide backward along the inner wall of the movable groove 27. The limiting slider 28 drives one side of the synchronous belt 25 to move backward, and the synchronous belt 25 moves as a whole. When the synchronous belt 25 moves, the rack 30 on one side of it moves accordingly. The rack 30 drives the gear 31 meshing with it to rotate. The gear 31 drives the rotating shaft 19 to rotate. The rotating shaft 19 drives the positioning plate 20 to rotate around the axis of the rotating shaft 19, so that the bottom end of the positioning plate 20 is disengaged from the top wall of the quenching box 1 and opens the downward passage, thereby releasing the limiting lock on the lifting platform 2.

[0037] like Figures 6 to 7 As shown, the unlocking assembly also includes two fixed pulleys 29, which are rotatably connected to the upper surface of the lifting platform 2. The inner side of the synchronous belt 25 is respectively connected to the outer wall of the fixed pulleys 29, and the end of the synchronous belt 25 away from the rack 30 is fixedly connected to the outer wall of the locking rod 24.

[0038] During operation: When the synchronous belt 25 moves under the drive of the telescopic rod 26, the inner side of the synchronous belt 25 slides around the outer wall of the fixed pulley 29. The fixed pulley 29 guides and tensions the synchronous belt 25, ensuring that the synchronous belt 25 moves smoothly and steadily. Since the end of the synchronous belt 25 away from the rack 30 is fixedly connected to the outer wall of the locking rod 24, when the synchronous belt 25 moves, this end drives the locking rod 24 to slide laterally along the upper direction of the lifting platform 2, so that the top of the locking rod 24 disengages from the bottom of the balance plate 23, releasing the resistance and locking of the balance plate 23. In summary, through the single retraction action of the telescopic rod 26, the synchronous belt 25 simultaneously drives the rack 30 to drive the gear 21 to rotate, causing the locking plate 20 to flip, and pulls the locking rod 24 laterally through the other end, realizing the synchronous linkage of the release of the travel restriction and the release of the anti-rotation. The unlocking component drives the synchronous belt 25 to move through a single retraction action of the telescopic rod 26. The rack 30 on one side drives the gear 31 to rotate, causing the locking plate 20 to flip and detach from the wall of the quenching box 1, releasing the limit lock on the lifting platform 2. At the same time, the other end of the synchronous belt 25 pulls the locking rod 24 to slide laterally, causing its top end to detach from the balance plate 23, releasing the rotation restriction on the arc-shaped mold 3. Thus, the lifting platform 2 and the arc-shaped mold 3 can simultaneously obtain the freedom of movement, simplifying the operation process and effectively improving the efficiency of quenching operations.

[0039] like Figures 8 to 10As shown, the hook assembly includes a connecting seat 35, which is fixedly connected to the bottom of the cross 7. A bearing seat 2 36 is fixedly connected to one side of the connecting seat 35. A hook plate 37 is fixedly connected to the outer wall of the shaft of the bearing seat 2 36. A torsion spring 2 38 is fixedly connected between the inner side of the hook plate 37 and one side of the connecting seat 35. A wedge-shaped platform 34 is fixedly connected to one side of the arc-shaped mold table 3. The positions and shapes of the hook plate 37 and the wedge-shaped platform 34 are mutually corresponding and adapted. An inclined slide 41 is provided on one side of the quenching box 1.

[0040] During operation: When the cross 7 descends to compress the leaf spring, the connecting seat 35 and the hook plate 37 descend accordingly and gradually approach the wedge-shaped platform 34 on one side of the arc-shaped mold 3. During the process of the hook plate 37 contacting the wedge-shaped platform 34, since the arc-shaped mold 3 is locked by the anti-rotation component and cannot rotate, the wedge-shaped platform 34 remains fixed. Its inclined surface pushes the hook plate 37 to swing inward around the shaft of the bearing seat 36 to avoid it. The torsion spring 38 is torsionally stored during the swing of the hook plate 37. When the hook plate 37 passes over the wedge-shaped platform 34 and moves below it, the thrust of the wedge-shaped platform 34 on the hook plate 37 disappears, and the torsion spring 38 releases its elastic potential energy to drive the hook plate 37 to swing back and reset, so that the hook plate 37... The inner side of 7 is engaged with the lower part of the wedge-shaped platform 34; after the lifting platform 2 and the arc-shaped mold platform 3 are reset to the initial position, the cross 7 continues to rise, so that the pressure roller 6 is completely separated from the arc surface of the arc-shaped mold platform 3 and a certain gap is formed. Then, the connecting seat 35 drives the hook plate 37 to rise synchronously. When the hook plate 37 continues to rise by hooking the lower part of the wedge-shaped platform 34, it will drive the arc-shaped mold platform 3 to rotate and tilt around the axis of the main rotating shaft 22, so that one side of the arc-shaped mold platform 3 gradually tilts downward. The formed leaf spring automatically slides down along the inclined arc surface of the arc-shaped mold platform 3 under the action of gravity, and slides outward through the inclined slide 41 set on one side of the quenching box 1 for unloading. There is no need for manual picking, which improves the picking efficiency.

[0041] like Figures 8 to 10 As shown, side connectors 40 are fixedly connected to the outer walls of both ends of the shaft of bearing housing 2 36, and resistance members 39 are fixedly connected to both sides of the connecting seat 35. The top of the resistance member 39 is in contact with the bottom of the side connector 40.

[0042] During operation: The connecting seat 35 drives the hook plate 37 to rise synchronously. When the hook plate 37 hooks the bottom of the wedge-shaped platform 34, the side connecting piece 40 cannot rotate outward around the shaft of the bearing seat 36 due to the restriction of the resisting piece 39. Therefore, the hook plate 37 is locked in the engaging position and cannot be flipped outward to disengage. This ensures that the hook plate 37 can firmly hook the wedge-shaped platform 34 and drive the arc-shaped mold platform 3 to rotate and tilt reliably. The hook plate 37 and the wedge-shaped platform 34 can maintain a stable engaging and locking state until the arc-shaped mold platform 3 rotates to the tilt angle so that the leaf spring can complete the sliding and unloading.

[0043] like Figures 8 to 10As shown, connecting frame plates 32 are fixedly connected to the upper sides of both sides of the lifting platform 2, and torsion springs 33 are fixedly connected to the upper side of one side of the balance plate 23. The end of the torsion springs 33 away from the balance plate 23 is fixedly connected to one side of the connecting frame plate 32.

[0044] During operation: When the hook plate 37 hooks the bottom end of the wedge platform 34, causing the arc-shaped mold platform 3 to rotate and tilt around the main rotating shaft 22, the balance plate 23 maintains the same rotational posture as the arc-shaped mold platform 3. When the balance plate 23 rotates, it stretches the torsion spring 33 to cause it to undergo elastic deformation and store energy. When the hook plate 37 continues to rise to the limit position with the cross 7, the arc-shaped mold platform 3 tilts to the maximum angle. At this time, because the wedge platform 34 deviates from its original position as the arc-shaped mold platform 3 rotates, the engagement angle between the hook plate 37 and the wedge platform 34 changes. The hook end of the hook plate 37 gradually disengages from the bottom end of the wedge platform 34, and the hooking state is automatically released. Subsequently, the torsion spring 33 pulls the balance plate 23 and the arc-shaped mold platform 3 to rotate in the opposite direction around the main rotating shaft 22 to reset, so that the arc-shaped mold platform 3 returns to the initial horizontal state and waits for the next working cycle.

[0045] In the above embodiments, the hook assembly automatically drives the arc-shaped mold table 3 to rotate and tilt, causing the leaf spring to slide off and be unloaded, through the upward movement of the cross 7 and the engagement of the wedge-shaped platform 34 and the hook plate 37. Its core function and effect is that it can achieve rapid unloading of high-temperature leaf springs without manual intervention, avoiding the need for operators to perform part-picking operations in a high-temperature quenching environment, reducing labor intensity and safety risks, and shortening the cycle time of a single quenching operation, thus effectively improving production efficiency.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A swing roller-type leaf spring arc surface strengthening quenching device, comprising a quenching box (1), characterized in that: A lifting platform (2) is slidably connected above the quenching box (1). A rotatable arc-shaped mold platform (3) is set above the lifting platform (2). A cross (7) is set directly above the quenching box (1). A bearing seat (4) is fixedly connected to the bottom of the cross (7). A motor (8) is fixedly installed on one side of the bearing seat (4). The output shaft of the motor (8) is fixedly connected to the shaft of the bearing seat (4). A swing frame (5) is symmetrically fixedly connected to the outer wall of the shaft of the bearing seat (4). Multiple pressure rollers (6) are rotatably connected to the bottom inner wall of the swing frame (5). The pressure rollers (6) are arranged in an arc. Power components that drive the cross (7) to move up and down are set on both sides. Limiting components are set on both sides of the lifting platform (2). The limiting components can restrict the lifting platform (2) from moving downward. Anti-rotation components that restrict the arc-shaped mold platform (3) from rotating are set on both sides of the arc-shaped mold platform (3). A lifting component that can drive the arc-shaped mold platform (3) to tilt and rotate is set on one side of the cross (7).

2. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 1, characterized in that: The power assembly includes two support plates (12), which are fixedly connected to the upper sides of the quenching box (1). A second motor (13) is fixedly installed at the bottom of the support plate (12). A mounting seat (10) is fixedly connected to the upper part of each support plate (12). A threaded rod (11) is rotatably connected to the inner wall of each mounting seat (10). The output shaft of the second motor (13) is fixedly connected to the bottom end of the threaded rod (11). An internal threaded slider (9) is slidably connected to the inner wall of each mounting seat (10). The inner wall of the internal threaded slider (9) is threadedly connected to the outer wall of the threaded rod (11). The two ends of the cross (7) are fixedly connected to one side of the two internal threaded sliders (9).

3. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 2, characterized in that: Gear 1 (14) is fixedly connected to both ends of the shaft of multiple pressure rollers (6), and arc-shaped toothed plates (15) are fixedly connected to both ends of the bearing seat 1 (4). The teeth of multiple gear 1 (14) can simultaneously mesh with the teeth of the arc-shaped toothed plates (15).

4. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 3, characterized in that: The traffic restriction component includes two movable blocks (17), which are fixedly connected to both sides of the lifting platform (2). The inner walls of both sides of the quenching box (1) are provided with side sliding grooves (16). The movable blocks (17) and the side sliding grooves (16) are slidably connected and adapted to each other. A return spring (18) is fixedly connected between the bottom of the movable blocks (17) and the bottom side of the side sliding grooves (16). The upper sides of the lifting platform (2) are symmetrically connected with rotating shafts (19), and the outer walls of the rotating shafts (19) are fixedly connected with positioning plates (20).

5. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 4, characterized in that: The anti-rotation component includes two clamping seats (21), which are fixedly connected to the upper sides of the lifting platform (2). The inner walls of the clamping seats (21) are rotatably connected to the main rotating shaft (22). One end of the main rotating shaft (22) is fixedly connected to the two sides of the arc-shaped mold table (3). The outer wall of the other end of the main rotating shaft (22) is fixedly connected to the balance plate (23). The bottom of both sides of the balance plate (23) is attached to the locking rod (24). The locking rod (24) is slidably connected to the upper side of the lifting platform (2). The upper sides of both sides of the lifting platform (2) are provided with unlocking components. The unlocking components can drive the rotating shaft (19) to rotate and drive the locking rod (24) to move laterally.

6. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 5, characterized in that: The unlocking assembly includes two synchronous belts (25), and two sets of movable grooves (27) are provided on the inner wall of the upper surface of the lifting platform (2). Limiting sliders (28) are fixedly connected to the bottom of both sides of the synchronous belt (25). The limiting sliders (28) and the movable grooves (27) are slidably connected and adapted to each other. Telescopic rods (26) are fixedly connected inside the movable grooves (27). One end of the telescopic rods (26) is fixedly connected to one end of one of the limiting sliders (28). A rack (30) is fixedly connected to one side of the synchronous belt (25). A gear II (31) is fixedly connected to the bottom outer wall of the rotating shaft (19). The teeth of the gear II (31) mesh with the teeth of the corresponding rack (30).

7. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 6, characterized in that: The unlocking assembly also includes two fixed pulleys (29), which are rotatably connected to the upper surface of the lifting platform (2). The inner side of the timing belt (25) is connected to the outer wall of the fixed pulley (29), and the end of the timing belt (25) away from the rack (30) is fixedly connected to the outer wall of the locking rod (24).

8. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 7, characterized in that: The hook assembly includes a connecting seat (35), which is fixedly connected to the bottom of the cross (7). A bearing seat (36) is fixedly connected to one side of the connecting seat (35). A hook plate (37) is fixedly connected to the outer wall of the shaft of the bearing seat (36). A torsion spring (38) is fixedly connected between the inner side of the hook plate (37) and one side of the connecting seat (35). A wedge platform (34) is fixedly connected to one side of the arc-shaped mold platform (3). The positions and shapes of the hook plate (37) and the wedge platform (34) are mutually corresponding and compatible. An inclined slide (41) is provided on one side of the quenching box (1).

9. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 8, characterized in that: The outer walls of both ends of the shaft of bearing housing 2 (36) are fixedly connected with side connectors (40), and the two sides of the connecting seat (35) are fixedly connected with resisting parts (39). The top of the resisting parts (39) is in contact with the bottom of the side connectors (40).

10. The swing roller pressing type leaf spring arc surface strengthening quenching device according to claim 9, characterized in that: A connecting frame plate (32) is fixedly connected to the upper sides of both sides of the lifting platform (2), and a torsion spring (33) is fixedly connected to the upper side of one side of the balance plate (23). The end of the torsion spring (33) away from the balance plate (23) is fixedly connected to one side of the connecting frame plate (32).

Images