Quenching and carburizing device for steel wire for high-stress suspension spring and using method of quenching and carburizing device

Abstract

The invention relates to the technical field of metal material heat treatment, in particular to a quenching carburizing device for a steel wire for a high-stress suspension spring and a using method thereof.The quenching carburizing device comprises a carburizing furnace and a control panel, a sealing cover plate is arranged on one side of the carburizing furnace, a jacking column is arranged on one side of the carburizing furnace, and the jacking column is fixedly connected with the sealing cover plate; supporting frames are arranged on the side, close to the carburizing furnace, of the sealing cover plate in an array mode, carrying assemblies are arranged on the supporting frames in an array mode, and the carrying assemblies are used for carrying the placed steel wires. The surfaces of the steel wires can make uniform contact with carbon molecules during carburizing, so that it is guaranteed that the thicknesses of carburized layers on the surfaces of the steel wires are consistent, and meanwhile in the whole carburizing process, the carburizing efficiency is improved. The arc-shaped grating plates can also rotate in a reciprocating mode, under the action of rotation, the steel wires can effectively roll in the arc-shaped grating plates, it can be guaranteed that the surfaces of the rolling steel wires can be in uniform and effective contact with carbon molecules, and therefore the uniformity of carburized layers on the surfaces of the steel wires is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment of metal materials, in particular to a quenching and carburizing device for steel wire for high-stress suspension springs and a use method thereof. Background Art

[0002] As the core load-bearing component of the automobile chassis system, high-stress suspension springs usually need to be used for a long time under high-frequency alternating stress and complex working conditions. Such high-stress suspension springs often rely on the surface hardness and core toughness of the spring material itself. Therefore, when preparing high-stress suspension springs, the steel wire used needs to be carburized and quenched to improve the surface hardness and core toughness of the steel wire to meet its material usage requirements as a high-stress suspension spring.

[0003] The quenching and carburizing process of steel wire for high-stress suspension springs is a key technology to improve its fatigue resistance and load-bearing capacity. Its core lies in strengthening the surface hardness, optimizing the core toughness, and regulating the residual stress distribution through carburizing. By placing the steel wire in a gas carburizing furnace and introducing a carbon-rich atmosphere (such as propane or methane), carbon atoms are diffused to the surface of the steel wire at a high temperature of 900 to 950°C, so that the surface of the steel wire can adhere to the carbon atoms, thereby increasing the overall surface hardness of the steel wire.

[0004] However, in existing devices, when carburizing steel wires for high-stress suspension springs, a large number of steel wires are usually placed on a support plate at a time, resulting in stacking between the steel wires. When the temperature inside the carburizing furnace begins to rise to meet the carburizing requirements, the contact surface between the stacked steel wires and the diffused carbon atoms will be hindered by other steel wires, resulting in the steel wires in the contact area being unable to fully form contact with the carbon atoms, causing inconsistent thickness of the carburized layer on the surface of the steel wires and insufficient carburization uniformity on the surface of the steel wires, thereby affecting product quality. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a quenching and carburizing device for steel wire for high-stress suspension springs and a preparation method thereof, which can enable the surface of the steel wire to be evenly contacted with carbon molecules during carburizing, thereby ensuring the consistent thickness of the carburized layer on the surface of the steel wire and improving the quality of the entire product.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a quenching and carburizing device for high-stress suspension spring steel wire and a method for using the same, comprising a carburizing furnace and a control panel, a cover plate provided on one side of the carburizing furnace, a lifting column provided on one side of the carburizing furnace, and a fixed connection between the lifting column and the cover plate, a support frame provided in an array on the cover plate near the carburizing furnace, and a supporting assembly provided in an array on the supporting frame, the supporting assembly being used to support the placed steel wire;

[0009] The supporting assembly includes a carrier frame movably arranged in an array on a support frame, and the carrier frame has a cavity structure inside. The carrier frame is provided with an array of arc-shaped grid plates on the side close to the cover plate, and the arc-shaped grid plates are symmetrically provided with arc grooves. The cavity inside the carrier frame is provided with a U-shaped support plate, and the U-shaped support plate is provided with a T-shaped block. The arc-shaped grid plates are engaged and rotated with the T-shaped blocks on the U-shaped support plates through the arc grooves. The arc-shaped grid plates are symmetrically provided with swing assemblies, and the swing assemblies are used to drive the arc-shaped grid plates to rotate back and forth.

[0010] The swing assembly includes a fixed support rod symmetrically arranged on the curved grille plate, and telescopic sleeves are symmetrically arranged at both ends of the fixed support rod, the telescopic sleeves are fixedly connected to the carrier frame, a movable guide rail is arranged in an array on the fixed support rod, a limit rod is arranged in an array on the curved grille plate, and the limit rod is engaged and slidably engaged with the movable guide rail, a driving plate is symmetrically arranged at both ends of the fixed support rod, a matching rod is symmetrically arranged on one side of the driving plate, a triangular push plate is movably arranged on the side of the driving plate close to the matching rod, and a driving assembly is provided on the side of the triangular push plate close to the covering plate, and the driving assembly is used to drive the triangular push plate to rotate;

[0011] The driving assembly drives the triangular push plate to rotate, drives the driving plate to move back and forth, drives the arc grille plate placed on the carrier to rotate, and makes the steel wire inside the arc grille plate rotate to form uniform contact with the carbon-rich atmosphere.

[0012] Preferably, a vibration assembly is provided on the U-shaped support plate, which is used to knock and vibrate the arc-shaped grille plate to vibrate the surface of the placed steel wire. A matching clamping wheel is provided on the side of the triangular push plate close to the covering plate, and the matching clamping wheel is fixedly connected to the triangular push plate through a fixed rod.

[0013] Preferably, the driving assembly includes a driving motor arranged on one side of the covering plate, a rotating shaft is provided on the side of the driving motor close to the covering plate, a driving sprocket is provided on the end of the rotating shaft away from the driving motor, a chain is provided on the outside of the driving sprocket, and matching sprockets are symmetrically provided on the side of the chain away from the driving sprocket, and the two matching sprockets and the driving sprocket are arranged in a triangular shape as a whole.

[0014] Preferably, the driving assembly also includes a rotating square shaft arranged on the side of the mating sprocket close to the carrier frame, and a conveying roller is movably arranged on the end of the rotating square shaft away from the mating sprocket, and the conveying roller has a cavity inside, and a driving chuck is arranged in an array on the conveying roller, and the driving chuck is engaged and driven with the mating chuck during operation.

[0015] Preferably, the vibration assembly includes a rotating plate arranged in an array on a U-shaped support plate, a knocking block is provided at one end of the rotating plate, a push-up block is movably provided at one end of the rotating plate away from the knocking block, and the overall weight of the push-up block is greater than the knocking block.

[0016] Preferably, the vibration assembly also includes a sliding seat movably provided on the ejection block, and the sliding seat and the ejection block are engaged and slidable, an L-shaped hook plate is movably engaged and provided on the sliding seat, and one end of the L-shaped hook plate is engaged and locked with the side wall of the arc-shaped grid plate, and an elastic element is provided in an array inside the sliding seat, and the elastic element is made of SiC fiber reinforced ceramic material.

[0017] Preferably, a T-shaped plug-in block is provided on the side of the carrier frame close to the support frame, a matching through groove is opened on the side of the support frame close to the T-shaped plug-in block, and the T-shaped plug-in block and the matching through groove are engaged and slid. An intercepting block is movably provided inside the support frame, and a lifting push plate is movably provided on the support frame, and an engaging and sliding relationship is formed between the lifting push plate and the support frame. A conveying component is provided on the side of the support frame away from the intercepting block, and the conveying component is used to convey the carbon-rich atmosphere.

[0018] Preferably, the delivery component includes a gas delivery channel arranged on one side of the support frame, a Tesla valve channel is arranged in an array inside the gas delivery channel, a gas diversion pipe is arranged at one end of the gas delivery channel away from the entrance end of the Tesla valve channel, and a sealing plate is arranged on the side of the gas delivery channel close to the covering plate.

[0019] Preferably, the conveying assembly further comprises an annular conveying pipe arranged inside the carburizing furnace, and an array of through holes are provided on the annular conveying pipe, and a matching sealing plate is provided on the side of the annular conveying pipe close to the sealing plate.

[0020] The present invention also provides a method for using a quenching and carburizing device for steel wire for high-stress suspension springs, the purpose of which is to: in the existing technology, enable the surface of the steel wire to be evenly exposed to carbon molecules during carburizing, thereby ensuring the uniform thickness of the carburized layer on the surface of the steel wire, improving the surface hardness of the entire steel wire, and improving the quality of the entire product.

[0021] To achieve the above-mentioned object, the present invention provides the following technical solution: a method for using a quenching and carburizing device for a high-stress suspension spring steel wire, comprising the following steps:

[0022] First, place the steel wires to be carburized one by one on the curved grid plates on the entire carrier. After the curved grid plates on the carrier are filled with steel wires, push the lifting push plate on the support frame to lift the conveying roller a certain distance. Then, insert the entire carrier into the support frame. After the insertion is completed, move the interception block to lock the carrier on the support frame. Then repeat the operation to insert each carrier into the corresponding support frame until all carriers are installed.

[0023] Then, the lifting push plate is reset to complete the engagement between the driving chuck and the matching chuck wheel. Then, by starting the control panel, the lifting column is driven to move the cover plate, and finally it falls into the carburizing furnace. Under the action of the carburizing furnace, the temperature is raised to between 900℃ and 950℃, which is convenient for subsequent carburizing operations.

[0024] When the temperature reaches the requirement, after a carbon-rich atmosphere is introduced into the carburizing furnace, under the control of the control panel, the driving motor starts to work to drive the rotating shaft to rotate, and the driving sprocket is rotated synchronously under the action of the rotating shaft. Under the action of the driving sprocket and the chain, the matching sprocket is rotated synchronously. Under the rotation of the two matching sprockets, the two conveying rollers have a synchronous speed, thereby driving the fixed support rod to move back and forth. Under the action of the fixed support rod, the arc grille plate can rotate back and forth, and the rotating arc grille plate can drive the steel wire to rotate synchronously;

[0025] Finally, with the rotation of the curved grille plate, the L-shaped hook plate can rise, and the sliding seat and the push block can rise synchronously with the rise of the L-shaped hook plate. At the extreme rising position, the L-shaped hook plate will break away from the contact with the curved grille plate, so that the knocking block at the other end of the rotating plate will instantly reset and knock the surface of the curved grille plate, causing vibration.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention places the steel wires to be carburized by using the curved grid plates and the supporting frames provided on the supporting frames. During the entire placement process, each steel wire is placed independently, so that the steel wires to be carburized will not be piled up, resulting in some steel wires being unable to form contact with the decomposed carbon molecules. At the same time, during the entire carburizing process, the curved grid plates can also rotate back and forth. Under the action of this rotation, the steel wires can form effective rolling inside the curved grid plates. The rolling steel wires can ensure that the surface can form effective contact with the carbon molecules evenly, thereby ensuring the uniformity of the carburized layer on the surface of the steel wires.

[0028] 2. During the entire carburizing process, the rotation of the curved grid plate can drive the set knocking block to perform continuous knocking. This knocking will cause the curved grid plate to vibrate, thereby causing the steel wire to vibrate slightly indirectly under the vibration generated by the curved grid plate. When the vibration is transmitted through the curved grid plate as a medium, it can effectively avoid direct knocking on the steel wire, causing deformation of the steel wire, and further improve the uniformity of the carburized layer formed on the entire steel wire and the density formed after the carbon molecules are attached;

[0029] 3. At the same time, during the entire process of the carbon-rich atmosphere being introduced, a part of the carbon-rich atmosphere will be transported to the inside of each carrier through the gas delivery channel. Through the different flow channels formed, a certain turbulence effect will be formed inside the entire carburizing furnace. Under this turbulence effect, the carbon molecules will move irregularly, preventing the carbon molecules from always contacting the steel wire in one direction, resulting in an uneven carburized layer of the steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an overall schematic diagram of the device of the present invention.

[0031] Figure 2 It is a schematic diagram of the overall half-section structure of the device of the present invention.

[0032] Figure 3 This is a schematic diagram of the overall internal structure of the carburizing furnace of the device of the present invention.

[0033] Figure 4 It is a schematic diagram of the exploded structure of the support frame and the bearing frame of the device of the present invention.

[0034] Figure 5 This is a schematic diagram of the overall placement structure of the device support frame and the curved grid plate of the present invention.

[0035] Figure 6 This is a schematic diagram of the connection between the curved grid plate and the vibration component of the device of the present invention.

[0036] Figure 7 This is a schematic diagram of the bottom structure of the curved grid plate of the device of the present invention.

[0037] Figure 8 The device of the present invention Figure 4 A partial enlarged schematic diagram of point A in the middle.

[0038] Figure 9 The device of the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0039] Figure 10 The device of the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0040] Figure 11This is a schematic diagram of the internal structure of the carburizing furnace of the device of the present invention.

[0041] Figure 12 It is a schematic diagram of the structure of the driving component of the device of the present invention.

[0042] Figure 13 It is a schematic diagram of the overall structure of the vibration component and the arc-shaped grid plate of the device of the present invention.

[0043] Figure 14 This is an enlarged schematic diagram of the partial explosion structure of the conveying component of the device of the present invention.

[0044] In the figure: 1. Carburizing furnace; 11. Control panel; 12. Lifting column; 2. Covering plate; 21. Support frame; 22. Matching slot; 23. Intercepting block; 24. Lifting push plate; 3. Support assembly; 31. Carrier; 311. T-shaped plug-in block; 32. Curved grid plate; 321. Limiting rod; 33. U-shaped support plate; 4. Swing assembly; 41. Fixed support rod; 42. Moving guide rail; 43. Drive plate; 44. Matching rod; 45. Triangular push plate; 451. Matching card wheel; 5. Drive assembly; 5 1. Driving motor; 52. Rotating shaft; 53. Driving sprocket; 54. Chain; 55. Matching sprocket; 56. Rotating square shaft; 57. Conveying roller; 58. Driving chuck; 6. Vibrating assembly; 61. Rotating plate; 62. Knocking block; 63. Ejecting block; 64. Sliding seat; 65. L-shaped hook plate; 66. Elastic element; 7. Conveying assembly; 71. Gas conveying channel; 72. Tesla valve channel; 73. Gas diverter pipe; 74. Sealing plate; 75. Annular conveying pipe; 76. Matching sealing plate. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example 1

[0047] See also Figures 1 to 10, which is the first embodiment of the present invention, provides a technical solution: a quenching and carburizing device for steel wire for high-stress suspension springs, including a carburizing furnace 1 and a control panel 11. The carburizing furnace 1 is used to heat the interior of the furnace body, so that after being filled with a carbon-rich atmosphere, it can be decomposed into carbon molecules in a high-temperature environment and eventually adhere to the surface of the steel wire to improve the hardness of the steel wire surface. A sealing plate 2 is provided on one side of the carburizing furnace 1. The sealing plate 2 is used to seal the entrance end of the carburizing furnace 1. The supporting frame 31 provided below the sealing plate 2 moves with the sealing plate 2. When entering the interior of the carburizing furnace 1, the sealing plate 2 as a whole will fit into the opening of the carburizing furnace 1. A lifting column 12 is provided on one side of the carburizing furnace 1, and the top The lifting column 12 is fixedly connected to the cover plate 2. The cover plate 2 is arranged in an array with a support frame 21 on one side close to the carburizing furnace 1. The support frame 21 is composed of two symmetrical frames and a square carrier plate. The support frame 21 supports the arrayed carrier 31, so that when the steel wire is placed, the placed carrier 31 can be driven into the carburizing furnace 1 by the cover plate 2 under the action of the support frame 21. A supporting assembly 3 is arranged in an array on the support frame 21. The supporting assembly 3 is used to support the placed steel wires. When the staff places the steel wires on the carrier 31, each steel wire is placed in an independent arc-shaped grid plate 32, so that the steel wires do not contact each other, thereby increasing the contact area between the steel wires and the carbon molecules.

[0048] The supporting assembly 3 includes a supporting frame 31 movably arranged in an array on the supporting frame 21, and the supporting frame 31 has a cavity structure inside. The supporting frame 31 is provided with an array of arc-shaped grid plates 32 on one side close to the cover plate 2, and the arc-shaped grid plates 32 are symmetrically provided with arc grooves. There are several through-notches in the array on the arc-shaped grid plates 32, so that when the carbon-rich atmosphere is introduced, the steel wire placed on the arc-shaped grid plates 32 can form contact with the carbon-rich atmosphere through the notches, thereby increasing the contact area between the carbon-rich atmosphere and the steel wire. A U-shaped support plate 33 is provided in the internal cavity of the supporting frame 31, and a T-shaped block is provided on the U-shaped support plate 33. The U-shaped support plate 33 is connected to the arc-shaped grid plate 32 through the provided T-shaped block. The annular grooves provided on the grid plates 32 form a locking rotation relationship, and the T-shaped blocks of the U-shaped support plates 33 engage with the curved grid plates 32 to prevent the curved grid plates 32 from being offset during rotation. The curved grid plates 32 are locked and rotated by the arc grooves and the T-shaped blocks on the U-shaped support plates 33. The curved grid plates 32 are symmetrically provided with swing assemblies 4, which are used to drive the curved grid plates 32 to rotate back and forth. Driven by the swing assemblies 4, the curved grid plates 32 rotate, thereby driving the entire steel wire to rotate at a small angle. During this rotation process, the surface of the steel wire can be evenly exposed to the carbon-rich atmosphere.

[0049] The swing assembly 4 includes a fixed support rod 41 symmetrically arranged on the curved grille plate 32, and telescopic sleeves are symmetrically arranged at both ends of the fixed support rod 41, and the telescopic sleeves are fixedly connected to the carrier frame 31. A movable guide rail 42 is arranged in an array on the fixed support rod 41, and the upper end of the movable guide rail 42 has a certain arc shape, so that when the fixed support rod 41 drives the movable guide rail 42 to displace, the limit rod 321 fixed on the curved grille plate 32 will move along the movable guide rail 42 under the action of the curved surface of the movable guide rail 42. During the entire movement process, the curved grille plate 32 will rotate, and a limit rod 321 is arranged in an array on the curved grille plate 32, and the limit rod 321 is engaged and slid with the movable guide rail 42, and the fixed support rod A driving plate 43 is symmetrically provided at both ends of 41. The driving plate 43 is used to form a fixed connection between the two fixed support rods 41, so that when the entire curved grille plate 32 rotates, the driving force received is relatively stable. A matching rod 44 is symmetrically provided on one side of the driving plate 43. A triangular push plate 45 is movably provided on the side of the driving plate 43 close to the matching rod 44. The two triangular push plates 45 are placed in the same posture as a whole, so that when the two triangular push plates 45 are driven by the driving assembly 5 to move, the fixed support rod 41 will not be unable to move normally due to the inconsistent thrust generated by the triangular push plates 45. A driving assembly 5 is provided on the side of the triangular push plate 45 close to the covering plate 2, and the driving assembly 5 is used to drive the triangular push plate 45 to rotate;

[0050] The driving assembly 5 drives the triangular push plate 45 to rotate, driving the driving plate 43 to move back and forth, driving the arc grid plate 32 placed on the carrier 31 to rotate, so that the steel wire inside the arc grid plate 32 rotates and evenly contacts the carbon-rich atmosphere.

[0051] A vibration assembly 6 is provided on the U-shaped support plate 33, and the vibration assembly 6 is used to knock and vibrate the arc-shaped grille plate 32, thereby vibrating the surface of the placed steel wire. A matching clamping wheel 451 is provided on the side of the triangular push plate 45 close to the covering plate 2, and the matching clamping wheel 451 is fixedly connected to the triangular push plate 45 through a fixed rod. The matching clamping wheel 451 is located outside the carrier 31. Through the clamping action between the matching clamping wheel 451 and the driving chuck 58, when the driving chuck 58 starts to rotate, the matching clamping wheel 451 will synchronously drive the triangular push plate 45 to rotate, thereby causing the fixed support rod 41 to move back and forth, thereby driving the arc-shaped grille plate 32 to rotate back and forth.

[0052] The driving assembly 5 includes a driving motor 51 arranged on one side of the covering plate 2. The driving motor 51 is provided with a rotating shaft 52 on the side close to the covering plate 2. A driving sprocket 53 is provided on the end of the rotating shaft 52 away from the driving motor 51. When the driving motor 51 drives the driving sprocket 53 to rotate, the power is transmitted through the action of a chain 54 arranged outside the driving sprocket 53. During the entire power transmission process, the two mating sprockets 55 can be driven to have the same speed, avoiding the speed inconsistency of the mating sprockets 55, which will eventually cause the triangular pusher to rotate. The driving force formed by the plate 45 causes interference, affecting the reciprocating rotation of the entire curved grid plate 32. A chain 54 is provided on the outside of the driving sprocket 53. A matching sprocket 55 is symmetrically provided on the side of the chain 54 away from the driving sprocket 53, and the two matching sprockets 55 and the driving sprocket 53 are arranged in a triangular shape as a whole. Under the action of the driving sprocket 53, the chain 54 and the matching sprocket 55, the two matching sprockets 55 can have the same speed when rotating, and the fixed plate provided on the matching sprocket 55 is rotatably engaged with the matching sprocket 55.

[0053] The driving assembly 5 also includes a rotating square shaft 56 arranged on the side of the mating sprocket 55 close to the carrier 31. A conveying roller 57 is movably arranged on the end of the rotating square shaft 56 away from the mating sprocket 55, and the conveying roller 57 has a cavity inside. The end of the rotating square shaft 56 close to the conveying roller 57 is engaged and arranged inside the conveying roller 57. At the same time, the distance of the cavity inside the conveying roller 57 is much larger than the distance that the rotating square shaft 56 extends into the interior, so that the conveying roller 57 has a certain lifting and lowering displacement distance, and at the same time will not affect the engaging relationship between the rotating square shaft 56 and the conveying roller 57. A driving chuck 58 is arranged in an array on the conveying roller 57, and the driving chuck 58 is engaged and driven between the mating chuck 451 during operation.

[0054] During use, the steel wire is placed on the curved grid plate 32 on the carrier 31. After the curved grid plate 32 is fully placed, the lifting push plate 24 is pushed to lift the conveying roller 57. The lifted conveying roller 57 can drive the driving chuck 58 to form an interlaced relationship with the matching card wheel 451 provided on the carrier 31. Then, the entire carrier 31 is inserted into the matching through groove 22 inside the support frame 21 through the provided T-shaped plug-in block 311. The intercepting block 23 is displaced to intercept the entrance of the matching through groove 22, completing the entire carrier 31. After installation, under the control of the control panel 11, the jacking column 12 is driven to be lifted first, and then rotated around the axis of the jacking column 12, and then the cover plate 2 and the support frame 21 below are all dropped into the carburizing furnace 1 to complete the preliminary work of the entire carburizing process. Subsequently, under the action of the carburizing furnace 1, the internal temperature is increased. After the temperature reaches the requirement, the steel wire is carburized by starting the drive component 5 and the conveying component 7. During the entire carburizing process, the steel wire can synchronously achieve slight vibration while rotating, thereby forming a uniform carburized layer on the surface of the steel wire and improving the surface hardness of the steel wire.

[0055] Example 2

[0056] See also Figures 1 to 12 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that:

[0057] The vibration assembly 6 includes a rotating plate 61 arranged in an array on the U-shaped support plate 33, and a knocking block 62 is provided at one end of the rotating plate 61. The knocking block 62 is used to knock on the surface of the curved grid plate 32. Under the action of the knocking, the vibration force is transmitted to the placed steel wire, causing the steel wire to vibrate slightly. Under this slight vibration, the steel wire can form a slight bouncing effect in the curved grid plate 32. Under this bouncing effect, the steel wire is temporarily suspended, thereby further increasing the direct contact area between the steel wire and the carbon molecules, so that the steel wire can be fully wrapped by the carbon molecules during the carburizing process, thereby improving the carburizing effect on the steel wire. The rotating plate 61 moves away from one end of the knocking block 62. A pushing block 63 is provided, and the overall weight of the pushing block 63 is greater than the knocking block 62. The pushing block 63 is used to be driven to move upward when the curved grille plate 32 rotates. When the pushing block 63 rises, the rotation of the rotating plate 61 will extend the horizontal displacement distance of the rotating plate 61, thereby squeezing the L-shaped hook plate 65 provided on the sliding seat 64, so that the L-shaped hook plate 65 moves outward a certain distance and eventually breaks away from the fitting effect with the curved grille plate 32. When the L-shaped hook plate 65 breaks away, the entire sliding seat 64 and the pushing block 63 will instantly fall down under the action of their own gravity. As the pushing block 63 falls, the knocking block 62 on the other side of the rotating plate 61 is driven to knock on the curved grille plate 32.

[0058] The vibration assembly 6 also includes a sliding seat 64 movably arranged on the push-out block 63, and the sliding seat 64 and the push-out block 63 are engaged and slidable. One side of the sliding seat 64 has a cavity structure. Through the engagement between the sliding seat 64 and the push-out block 63, when the push-out block 63 is driven to rise, the sliding seat 64 will rise synchronously. An L-shaped hook plate 65 is movably arranged on the sliding seat 64, and one end of the L-shaped hook plate 65 is engaged and locked with the side wall of the arc grille plate 32. The L-shaped hook plate 65 and the sliding seat 64 are engaged and locked. The L-shaped hook plate 65 passes through the support plate provided on the sliding seat 64 to form a block, so that the L-shaped hook plate 65 and the sliding seat 64 are engaged. At the same time, a slot is also opened on the sliding seat 64 to facilitate the entire L-shaped hook plate 65 to slide a certain distance on the sliding seat 64. The internal array of the sliding seat 64 is provided with an elastic element 66, and the elastic element 66 is made of SiC fiber reinforced ceramic material. Through this material, the entire elastic element 66 has a certain elasticity on the basis of high temperature resistance.

[0059] The support frame 21 is provided with a T-shaped plug-in block 311 on the side of the carrier frame 31 close to the support frame 21, and the support frame 21 is provided with a matching through-slot 22 on the side close to the T-shaped plug-in block 311, and the T-shaped plug-in block 311 is engaged and slidably engaged with the matching through-slot 22. An interception block 23 is movably provided inside the support frame 21. The interception block 23 is used to slide the interception block 23 after the carrier frame 31 and the support frame 21 form a plug-in relationship. The sliding interception block 23 closes the entrance of the matching through-slot 22 to prevent the carrier frame 31 from falling off the support frame 21 again. A lifting push plate 24 is movably provided on the support frame 21, and the lifting push plate 24 is engaged with the lifting push plate 24. An engaging and sliding relationship is formed between the support frames 21, and the lifting push plate 24 as a whole has a certain inclined surface, which is in contact with the conveying roller 57. When the lifting push plate 24 is pushed to move, the provided conveying roller 57 will be lifted a certain distance, thereby driving the provided driving chuck 58 to rise synchronously. After rising, the driving chuck 58 and the placed carrier frame 31 form a certain staggered effect. Under this staggered effect, the carrier frame 31 can be normally inserted into the interior of the support frame 21. A conveying component 7 is provided on the side of the support frame 21 away from the interception block 23. The conveying component 7 is used to convey the carbon-rich atmosphere.

[0060] During use, after the carburizing requirements are met, the two conveying rollers 57 are driven by the driving motor 51 to have the same speed, and the triangular push plate 45 is driven to push the fixed support rod 41 to move back and forth at the same speed. Under the reciprocating movement of the fixed support rod 41, the movable guide rail 42 is driven to drive the curved grid plate 32 to rotate. Under the rotation of the curved grid plate 32, the placed steel wire can be rolled. At the same time, under the rotation of the curved grid plate 32, the L-shaped hook plate 65 can be lifted, and the rotating plate 61 is rotated at the same time. During the rotation process, the push block 63 is driven to move outward to a certain position. During the movement, the L-shaped hook plate 65 will break away from the contact relationship with the curved grid plate 32 and eventually break away from the curved grid plate 32. The sliding seat 64 and the pushing block 63 set at this moment will fall instantly under the action of their own gravity after being lifted a certain distance. The falling process will drive the knocking block 62 at the other end of the rotating plate 61 to knock on the surface of the curved grid plate 32, and the vibration generated by the knocking will be transmitted to the steel wire through the curved grid plate 32, so that the steel wire has a rotating and vibrating state during the entire carburizing process, and in this state, a uniform carburized layer can be formed on the surface of the steel wire.

[0061] The remaining structures are the same as those of Example 1.

[0062] Example 3

[0063] See also Figures 1 to 14 , which is the third embodiment of the present invention. This embodiment is different from the first and second embodiments in that:

[0064] The conveying assembly 7 includes a gas conveying channel 71 arranged on one side of the support frame 21. The gas conveying channel 71 has an array of Tesla valve channels 72 inside. The Tesla valve channels 72 are used to form a one-way conveying channel through a specific conveying pipeline, so that when the carbon-rich atmosphere is conveyed from the upper end of the carburizing furnace 1, part of the atmosphere can be conveyed to the internal cavity of each support frame 31 through the Tesla valve channel 72 inside the gas conveying channel 71, and finally form contact with the steel wire from the notch provided on the arc-shaped grid plate 32, and fully wrap the steel wire. At the same time, the carbon-rich atmosphere conveyed in the gas conveying channel 71 can also fully wrap the entire carburizing furnace 1 A certain disturbance is formed inside, and under this disturbance, the contact between the decomposed carbon molecules and the steel wire is strengthened, so that the steel wire forms a uniform carburized layer. A gas diversion pipe 73 is provided at one end of the gas delivery channel 71 away from the entrance end of the Tesla valve channel 72. The gas diversion pipe 73 is used to divert the transported carbon-rich atmosphere and transport the steel wire on each layer of the support frame 31. A sealing plate 74 is provided on the side of the gas delivery channel 71 close to the cover plate 2. The sealing plate 74 is used to form a seal with the annular delivery pipe 75, and transport a part of the carbon-rich atmosphere to the inside of the gas delivery channel 71 in a sealed state.

[0065] The conveying assembly 7 also includes an annular conveying pipe 75 arranged inside the carburizing furnace 1, and an array of through holes are opened on the annular conveying pipe 75. A matching sealing plate 76 is provided on the side of the annular conveying pipe 75 close to the sealing plate 74. The matching sealing plate 76 is used to form a plug-in relationship with the matching sealing plate 76 when the gas conveying channel 71 is driven by the covering plate 2 to descend. In this plug-in relationship, the channel between the annular conveying pipe 75 and the sealing plate 74 is sealed, so that the gas therein can enter the interior of the gas conveying channel 71.

[0066] During use, the carbon-rich atmosphere is introduced into the entire carburizing furnace 1 through the provided external pipe. When the carbon-rich atmosphere is introduced, the carbon-rich atmosphere will enter the entire carburizing furnace 1 through the through hole opened on the annular conveying pipe 75. A part of the carbon-rich atmosphere will form another conveying channel under the sealing effect of the sealing plate 74 and the matching sealing plate 76. Then a part of the carbon-rich atmosphere will enter the gas conveying channel 71, thereby forming a one-way flow channel under the action of the Tesla valve channel 72. Then this part of the gas will enter the interior of each layer of the support frame 31 through the gas diversion pipe 73, and finally pass through the arc-shaped gasket on the support frame 31. The slots opened on the grid plate 32 form contact with the steel wire. Under the action of the two conveying pipes, a turbulent flow is formed on the conveying gas inside the carburizing furnace 1, so that the steel wire can form effective and uniform contact with the decomposed carbon molecules under the action of rotation and vibration, thereby making the carburized layer on the surface of the steel wire more uniform and dense. After completing the entire carburizing process, the steel wire is cooled to room temperature, and the quality of the entire steel wire after the carburizing process is checked. Subsequently, the carburized steel wire is heated to the quenching temperature and then quenched to complete the preparation of the steel wire for the entire high-stress suspension spring. At the same time, the materials used in the above-mentioned structure are all high-temperature resistant materials.

[0067] The remaining structures are the same as those of Examples 1 and 2.

[0068] Example 4

[0069] See also Figures 1 to 14 , which is the fourth embodiment of the present invention, provides: a method for using a quenching and carburizing device for a high-stress suspension spring steel wire, comprising the following steps:

[0070] S1, first place the steel wires to be carburized one by one on the curved grid plates 32 on the entire carrier 31. After the curved grid plates 32 on the carrier 31 are fully filled with steel wires, then push the lifting push plate 24 on the support frame 21 to lift the conveying roller 57 a certain distance, then insert the entire carrier 31 into the support frame 21. After the insertion is completed, move the interception block 23 to lock the carrier 31 on the support frame 21. Then repeat the operation to insert each carrier 31 into the corresponding support frame 21 until all carriers 31 are installed;

[0071] S2, then reset the lifting push plate 24 to complete the engagement between the driving chuck 58 and the matching chuck wheel 451, and then activate the control panel 11 to drive the lifting column 12 to move the cover plate 2, and finally drop it into the carburizing furnace 1. Under the action of the carburizing furnace 1, the temperature is raised to between 900°C and 950°C, which facilitates the subsequent carburizing operation;

[0072] S3, when the temperature reaches the required level, after a carbon-rich atmosphere is introduced into the carburizing furnace 1, under the control of the control panel 11, the drive motor 51 starts to work and drives the rotating shaft 52 to rotate. Under the action of the rotating shaft 52, the driving sprocket 53 rotates synchronously. Under the action of the driving sprocket 53 and the chain 54, the matching sprocket 55 rotates synchronously. Under the rotation of the two matching sprockets 55, the two conveying rollers 57 have a synchronous speed, thereby driving the fixed support rod 41 to reciprocate. Under the action of the fixed support rod 41, the curved grid plate 32 can rotate back and forth. The rotating curved grid plate 32 can drive the steel wire to rotate synchronously;

[0073] S4. Finally, with the rotation of the curved grille plate 32, the L-shaped hook plate 65 can be raised. With the rise of the L-shaped hook plate 65, the sliding seat 64 and the push-up block 63 are synchronously raised. When it reaches the limit position of the rise, the L-shaped hook plate 65 will be out of contact with the curved grille plate 32, so that the knocking block 62 at the other end of the rotating plate 61 will instantly reset and knock the surface of the curved grille plate 32, causing vibration.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A quenching and carburizing device for steel wire for high-stress suspension springs, comprising a carburizing furnace (1) and a control panel (11), characterized in that: A cover plate (2) is provided on one side of the carburizing furnace (1), a lifting column (12) is provided on one side of the carburizing furnace (1), and the lifting column (12) and the cover plate (2) are fixedly connected, a support frame (21) is provided in an array on the side of the cover plate (2) close to the carburizing furnace (1), and a supporting assembly (3) is provided in an array on the supporting frame (21), and the supporting assembly (3) is used to support the placed steel wire; The supporting assembly (3) includes a carrier frame (31) movably arranged in an array on the support frame (21), and the carrier frame (31) has a cavity structure inside. The carrier frame (31) is provided with an array of arc-shaped grid plates (32) on one side close to the cover plate (2), and the arc-shaped grid plates (32) are symmetrically provided with arc-shaped grooves. The cavity inside the carrier frame (31) is provided with a U-shaped support plate (33), and the U-shaped support plate (33) is provided with a T-shaped block. The arc-shaped grid plates (32) are engaged and rotated with the T-shaped block on the U-shaped support plate (33) through the arc-shaped groove. The arc-shaped grid plates (32) are symmetrically provided with a swing assembly (4), and the swing assembly (4) is used to drive the arc-shaped grid plates (32) to rotate back and forth. The swing assembly (4) comprises a fixed support rod (41) symmetrically arranged on the arc-shaped grid plate (32), and telescopic sleeves are symmetrically arranged at both ends of the fixed support rod (41), and the telescopic sleeves are fixedly connected to the carrier (31), and a movable guide rail (42) is arranged in an array on the fixed support rod (41), and a limit rod (321) is arranged in an array on the arc-shaped grid plate (32), and the limit rod (321) and the movable guide rail (42) are engaged and slid. A driving plate (43) is symmetrically arranged at both ends of the fixed support rod (41), and a matching rod (44) is symmetrically arranged on one side of the driving plate (43), and a triangular push plate (45) is movably arranged on the side of the driving plate (43) close to the matching rod (44), and a driving assembly (5) is provided on the side of the triangular push plate (45) close to the covering plate (2), and the driving assembly (5) is used to drive the triangular push plate (45) to rotate.

2. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 1, characterized in that: The U-shaped support plate (33) is provided with a vibration assembly (6), which is used to knock and vibrate the arc-shaped grid plate (32) to vibrate the surface of the placed steel wire. The triangular push plate (45) is provided with a matching clamping wheel (451) on the side close to the cover plate (2), and the matching clamping wheel (451) is fixedly connected to the triangular push plate (45) through a fixed rod.

3. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 2, characterized in that: The driving assembly (5) comprises a driving motor (51) arranged on one side of the cover plate (2); a rotating shaft (52) is arranged on the side of the driving motor (51) close to the cover plate (2); a driving sprocket (53) is arranged on the end of the rotating shaft (52) away from the driving motor (51); a chain (54) is arranged outside the driving sprocket (53); a matching sprocket (55) is symmetrically arranged on the side of the chain (54) away from the driving sprocket (53); and the two matching sprockets (55) and the driving sprocket (53) are arranged in a triangular shape as a whole.

4. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 3, characterized in that: The driving assembly (5) further comprises a rotating square shaft (56) arranged on a side of the matching sprocket (55) close to the carrier (31); a conveying roller (57) is movably arranged at one end of the rotating square shaft (56) away from the matching sprocket (55); a cavity is provided inside the conveying roller (57); a driving chuck (58) is arranged in an array on the conveying roller (57); and the driving chuck (58) engages with the matching chuck wheel (451) for driving during operation.

5. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 2, characterized in that: The vibration assembly (6) comprises a rotating plate (61) arranged in an array on a U-shaped support plate (33), a knocking block (62) being arranged at one end of the rotating plate (61), and a pushing block (63) being movably arranged at one end of the rotating plate (61) away from the knocking block (62), and the overall weight of the pushing block (63) is greater than that of the knocking block (62).

6. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 5, characterized in that: The vibration assembly (6) further comprises a sliding seat (64) movably arranged on the ejection block (63), and the sliding seat (64) and the ejection block (63) are engaged and slidable, an L-shaped hook plate (65) is movably arranged on the sliding seat (64), and one end of the L-shaped hook plate (65) is engaged and locked with the side wall of the arc-shaped grid plate (32), and an elastic element (66) is arranged in an array inside the sliding seat (64), and the elastic element (66) is made of SiC fiber reinforced ceramic material.

7. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 6, characterized in that: The carrier frame (31) is provided with a T-shaped plug-in block (311) on the side close to the support frame (21), and the support frame (21) is provided with a matching through groove (22) on the side close to the T-shaped plug-in block (311), and the T-shaped plug-in block (311) and the matching through groove (22) are engaged and slid. An intercepting block (23) is movably provided inside the support frame (21), and a lifting push plate (24) is movably provided on the support frame (21), and an engaging and sliding relationship is formed between the lifting push plate (24) and the support frame (21). A conveying component (7) is provided on the side of the support frame (21) away from the intercepting block (23), and the conveying component (7) is used to convey the carbon-rich atmosphere.

8. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 7, characterized in that: The delivery assembly (7) includes a gas delivery channel (71) arranged on one side of the support frame (21), a Tesla valve channel (72) is arranged in an array inside the gas delivery channel (71), a gas diversion pipe (73) is arranged at one end of the gas delivery channel (71) away from the entrance end of the Tesla valve channel (72), and a sealing plate (74) is arranged on the side of the gas delivery channel (71) close to the cover plate (2).

9. The quenching and carburizing device for high-stress suspension spring steel wire according to claim 8, characterized in that: The conveying assembly (7) further comprises an annular conveying pipe (75) arranged inside the carburizing furnace (1), and an array of through holes is provided on the annular conveying pipe (75), and a matching sealing plate (76) is provided on one side of the annular conveying pipe (75) close to the sealing plate (74).

10. The method for preparing a quenching and carburizing device for a high-stress suspension spring steel wire according to any one of claims 1 to 9, characterized in that: First, the steel wires to be carburized are placed one by one on the arc-shaped grid plate (32) on the entire carrier (31). After the arc-shaped grid plate (32) on the carrier (31) is filled with steel wires, the lifting push plate (24) on the support frame (21) is then pushed to lift the conveying roller (57) a certain distance. Then, the entire carrier (31) is inserted into the support frame (21). After the insertion is completed, the interception block (23) is moved to lock the carrier (31) on the support frame (21). Then, the operation is repeated to insert each carrier (31) into the corresponding support frame (21) until all carriers (31) are installed. Then, the lifting push plate (24) is reset to complete the engagement between the driving chuck (58) and the matching chuck wheel (451), and then the control panel (11) is activated to drive the lifting column (12) to drive the cover plate (2) to move, and finally fall into the carburizing furnace (1). Under the action of the carburizing furnace (1), the temperature is raised to between 900°C and 950°C, which is convenient for the subsequent carburizing operation; When the temperature reaches the required level, a carbon-rich atmosphere is introduced into the carburizing furnace (1). Under the control of the control panel (11), the driving motor (51) starts to work and drives the rotating shaft (52) to rotate. Under the action of the rotating shaft (52), the driving sprocket (53) rotates synchronously. Under the action of the driving sprocket (53) and the chain (54), the matching sprocket (55) rotates synchronously. Under the rotation of the two matching sprockets (55), the two conveying rollers (57) have a synchronous speed, thereby driving the fixed support rod (41) to move back and forth. Under the action of the fixed support rod (41), the arc-shaped grid plate (32) can rotate back and forth, and the rotating arc-shaped grid plate (32) can drive the steel wire to rotate synchronously. Finally, under the rotation of the arc-shaped grid plate (32), the L-shaped hook plate (65) can be raised, and the sliding seat (64) and the push-up block (63) are raised synchronously under the rising of the L-shaped hook plate (65). When the rising limit position is reached, the L-shaped hook plate (65) is out of contact with the arc-shaped grid plate (32), so that the knocking block (62) at the other end of the rotating plate (61) is instantly reset to knock the surface of the arc-shaped grid plate (32), forming a vibration.

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