A quenching device for processing special spring steel wire for automobile seat

Abstract

The application discloses a quenching device for processing special spring steel wires for automobile seats and particularly relates to the technical field of spring steel wire quenching, which comprises a quenching pool, a spraying component, an extraction component and an adjusting assembly. A plurality of spraying holes are formed in the middle of the spraying component, and the spraying holes are used for spraying the quenching medium in the spraying component to the surface of the spring steel wire. The extraction component can generate negative pressure to extract the quenching medium in the quenching pool. The quenching medium extracted by the extraction component can enter the spraying component through the adjusting assembly, so that the temperature of the quenching medium in the spraying component is adjusted. The quenching device sprays the cooled quenching medium through the spraying component to destroy the steam film on the surface of the steel wire. The extraction component extracts the quenching medium in the quenching pool which is heated after being in contact with the high-temperature steel wire, so that the quenching pool forms a turbulent flow, and the formation of the steam film is further prevented. Therefore, the problem that the steam film hinders the cooling of the spring steel wire and the cooling capacity of the quenching medium is reduced due to the temperature rise of the quenching medium is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of spring steel wire quenching technology, and more specifically, to a quenching device for processing special spring steel wire for automobile seats. Background Technology

[0002] Quenching of spring steel wire is a key heat treatment process. This process rapidly cools the austenitized spring steel wire, transforming it into a high-strength martensitic structure, thereby significantly improving the hardness, tensile strength, and elastic limit of the spring steel wire. Its core mechanism is phase transformation strengthening, which enables the spring steel wire to withstand repeated alternating loads, exhibiting excellent fatigue resistance and durability.

[0003] However, when the hot spring steel wire enters the quenching medium, the medium in contact with it vaporizes instantly, forming a vapor film on the surface of the spring steel wire. This vapor film severely hinders the cooling of the spring steel wire, resulting in a slower cooling rate and a longer residence time in the high-temperature zone. This increases the risk of surface decarburization and grain coarsening, and may cause the optimal cooling time to be missed. Furthermore, in continuous quenching operations, the large amount of heat introduced by the spring steel wire causes the temperature of the quenching medium in the quenching tank to rise continuously. The increased temperature of the quenching medium reduces its cooling capacity, resulting in a slower cooling rate for subsequently entering spring steel wires and a longer duration of the vapor film stage. This not only exacerbates the aforementioned cooling defects but also leads to asynchronous microstructural transformation on the cross-section of the spring steel wire, causing problems such as uneven microstructure and insufficient hardened layer depth, ultimately affecting the uniformity and stability of the quenching quality. Therefore, this invention proposes a quenching device for processing special spring steel wire for automotive seats to solve the above problems. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a quenching device for processing special spring steel wire for automobile seats, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a quenching device for processing special spring steel wire for automotive seats, comprising: a quenching pool, a spraying component, an extractor, and an adjusting component. The spraying component has multiple spray holes in its center, which are used to spray the quenching medium inside the spraying component onto the surface of the spring steel wire. The extractor is disposed in the quenching pool, and a negative pressure is generated inside the extractor to extract the quenching medium from the quenching pool. The adjusting component is disposed at one end of the extractor, and the quenching medium extracted by the extractor can enter the interior of the spraying component through the adjusting component, thereby adjusting the temperature of the quenching medium inside the spraying component.

[0006] Preferably, the spraying component has a first through hole inside, and a mounting groove inside, with an impeller rotatably connected inside the mounting groove, and the first through hole communicating with the mounting groove.

[0007] Preferably, the extractor has a second through hole inside, a turbine is rotatably connected inside the second through hole, the second through hole is connected to the quenching pool, and the position of the second through hole is lower than the liquid level of the quenching medium inside the quenching pool.

[0008] Preferably, the adjustment assembly includes an adjustment cylinder disposed at one end of the extraction component, the adjustment cylinder having a third through hole inside, and a sealing element slidably connected inside the adjustment cylinder, the sealing element being able to adjust the opening degree of the third through hole by sliding.

[0009] Preferably, the extraction component has a pipe inside, the regulating cylinder is connected to the pipe, the extraction component has a fourth through hole inside, the fourth through hole is connected to the second through hole through a pipe, and a one-way valve is provided at the third through hole.

[0010] Preferably, an elastic element is provided inside the adjusting cylinder, one end of which is fixedly connected to the sealing element, and the other end of which is fixedly connected to the inner wall of the adjusting cylinder. An electromagnetic element is fixedly connected inside the adjusting cylinder, and the electromagnetic element drives the sealing element to move by generating magnetic force.

[0011] Preferably, the two ends of the impeller are fixedly connected to a connecting shaft, one end of the connecting shaft passes through the injection component and the extraction component, and one end of the turbine is fixedly connected to the end of the connecting shaft away from the impeller.

[0012] Preferably, the circumferential array of spray holes is arranged in the middle of the spraying component, the spraying component has a spraying cavity inside, the spray holes are connected to the spraying cavity, the spraying cavity is connected to the mounting groove, and a temperature sensor is arranged inside the spraying cavity.

[0013] Preferably, a fixing block is fixedly connected to the side wall of the spraying component, the fixing block is fixedly connected to the inner wall of the quenching pool, a drive pump is fixedly connected to one end of the first through hole, the drive pump is provided with two liquid inlets and one liquid outlet, one of the liquid inlets is connected to the external quenching medium cooling system, and the other liquid inlet is connected to the third through hole.

[0014] Preferably, there are two extraction components, which are respectively fixedly connected to both ends of the injection component, and there are multiple injection components arranged in an array along the axis of the spring steel wire.

[0015] The technical effects and advantages of this invention are as follows:

[0016] This invention uses a spraying component to directly spray cooled quenching medium onto the surface of spring steel wire for quenching. The spraying pressure effectively breaks the vapor film on the wire surface. Simultaneously, an extraction component continuously extracts the quenching medium from the quenching tank, causing it to heat up upon contact with the high-temperature steel wire. This creates turbulence within the quenching tank, further suppressing vapor film formation and improving the heat exchange efficiency of the quenching medium. This solves the problems of vapor film hindering cooling and the decrease in cooling capacity due to medium temperature rise. Furthermore, an adjustment component controls the temperature of the quenching medium within the spraying component, preventing cracking caused by excessively low medium temperature leading to rapid cooling of the steel wire. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the spraying and extraction components of the present invention.

[0019] Figure 3 This is a cross-sectional view of the spray component structure of the present invention.

[0020] Figure 4 This is a cross-sectional view of the extraction component structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the turbine and impeller structure of the present invention.

[0022] The attached figures are labeled as follows: 1. Quenching pool; 2. Spraying component; 21. Spraying hole; 22. First through hole; 23. Impeller; 24. Spraying chamber; 25. Drive pump; 3. Extraction component; 31. Second through hole; 32. Turbine; 33. Pipe; 34. Fourth through hole; 4. Adjustment component; 41. Adjustment cylinder; 42. Third through hole; 43. Sealing component; 44. Elastic component; 45. Electromagnetic component. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] In actual production, when the spring steel wire enters the quenching medium, the quenching medium in contact with it will instantly vaporize, forming a vapor film on the surface of the spring steel wire. In continuous quenching operations, the large amount of heat introduced by the spring steel wire will cause the temperature of the quenching medium in the quenching pool to rise continuously, and the vapor film stage will last longer. To solve the above problems, this embodiment is invented.

[0026] Please see Figures 1 to 5 As shown, a quenching device for processing special spring steel wire for automobile seats according to an embodiment of the present invention includes a quenching pool 1, a spraying component 2, an extraction component 3, and an adjustment component 4. The spraying component 2 has multiple spray holes 21 in its middle, which are used to spray the quenching medium inside the spraying component 2 onto the surface of the spring steel wire. The extraction component 3 is disposed in the quenching pool 1, and a negative pressure is generated inside the extraction component 3 to extract the quenching medium inside the quenching pool 1. The adjustment component 4 is disposed at one end of the extraction component 3, and the quenching medium extracted by the extraction component 3 can enter the interior of the spraying component 2 through the adjustment component 4, thereby adjusting the temperature of the quenching medium inside the spraying component 2. Both the spraying component 2 and the extraction component 3 have channels in their middle for the spring steel wire to pass through.

[0027] Please see Figure 2 and Figure 3 As shown, the spraying component 2 has a first through hole 22 inside and an installation groove inside. An impeller 23 is rotatably connected inside the installation groove. The first through hole 22 is connected to the installation groove. When the quenching medium passes through the first through hole 22 and the installation groove, the flow of the quenching medium can drive the impeller 23 to rotate.

[0028] Please see Figure 2 and Figure 4 As shown, the extractor 3 has a second through hole 31 inside, and a turbine 32 is rotatably connected inside the second through hole 31. The second through hole 31 is connected to the quenching pool 1, and the position of the second through hole 31 is lower than the liquid level of the quenching medium inside the quenching pool 1.

[0029] Please see Figure 2 and Figure 4 As shown, the adjustment component 4 includes an adjustment cylinder 41 disposed at one end of the extraction component 3. A third through hole 42 is provided inside the adjustment cylinder 41. A sealing component 43 is slidably connected inside the adjustment cylinder 41. The sealing component 43 can adjust the opening degree of the third through hole 42 by sliding.

[0030] Please see Figure 4 As shown, the extraction component 3 has a pipe 33 inside, and the regulating cylinder 41 is connected to the pipe 33. The extraction component 3 has a fourth through hole 34 inside, which is connected to the second through hole 31 through the pipe 33. A one-way valve is installed at the third through hole 42. The fourth through hole 34 is connected to the external quenching medium cooling system through a hose. The quenching medium cooling system is existing technology and will not be described in detail here.

[0031] Please see Figure 4As shown, an elastic element 44 is provided inside the regulating cylinder 41. One end of the elastic element 44 is fixedly connected to the sealing element 43, and the other end of the elastic element 44 is fixedly connected to the inner wall of the regulating cylinder 41. An electromagnetic element 45 is fixedly connected inside the regulating cylinder 41. The electromagnetic element 45 drives the sealing element 43 to move by generating magnetic force. The electromagnetic element 45 is an electromagnet. The electromagnetic element 45 is connected to the external control system by electrical signal. The external control system is existing technology and will not be described in detail here.

[0032] Please see Figure 5 As shown, the impeller 23 is fixedly connected to both ends of a connecting shaft. One end of the connecting shaft passes through the jetting component 2 and the extraction component 3. One end of the turbine 32 is fixedly connected to the end of the connecting shaft away from the impeller 23. When the impeller 23 rotates, it can drive the turbine 32 to rotate through the connecting shaft.

[0033] Please see Figure 3 As shown, the spray holes 21 are arranged in a circumferential array in the middle of the spray component 2. The spray component 2 has a spray cavity 24 inside. The spray holes 21 are connected to the spray cavity 24. The spray cavity 24 is connected to the mounting groove. A temperature sensor is installed inside the spray cavity 24. The temperature sensor is connected to the external control system via electrical signals.

[0034] Please see Figure 1 and Figure 3 As shown, a fixing block is fixedly connected to the side wall of the spray component 2, and the fixing block is fixedly connected to the inner wall of the quenching pool 1. A drive pump 25 is fixedly connected to one end of the first through hole 22. The drive pump 25 is provided with two liquid inlets and one liquid outlet. One liquid inlet is connected to the external quenching medium cooling system through a hose, and the other liquid inlet is connected to the third through hole 42 through a hose. The liquid outlet is connected to the first through hole 22. The drive pump 25 is existing technology and will not be described in detail here. There are two extraction components 3, which are fixedly connected to the two ends of the spray component 2 respectively. The operator can arrange multiple spray components 2 in an array along the axis of the spring steel wire according to the actual production situation.

[0035] During use, after the spring steel wire enters the quenching tank 1, it passes through the middle of the spraying component 2 and the extraction component 3. The drive pump 25 is activated, causing it to pump the cooled quenching medium through the first through-hole 22 into the spraying chamber 24 and spray it onto the surface of the spring steel wire through the spraying hole 21. The spray pressure through the spraying hole 21 breaks the vapor film formed on the surface of the spring steel wire. Simultaneously, the cooled quenching medium directly acts on the surface of the spring steel wire to quench and cool it. When the cooled quenching medium enters the spraying chamber 24 through the first through-hole 22, the flow of the cooled quenching medium drives the impeller 23 to rotate, which in turn drives the turbine 32 to rotate via the connecting shaft. This creates a negative pressure at the second through-hole 31, thus quenching the spring steel wire. The internal quenching medium enters the extraction component 3 through the second through hole 31 and returns to the external quenching medium cooling system through the fourth through hole 34 via the pipe 33. The cooled quenching medium is sprayed out through the spray component 2 and acts directly on the surface of the spring steel wire to quench the spring steel wire. At the same time, the pressure of the sprayed quenching medium breaks the vapor film on the surface of the steel wire. During the spraying of the quenching medium, the extraction component 3 extracts the quenching medium that has heated up after contacting the high-temperature steel wire inside the quenching pool 1, so that turbulence is formed inside the quenching pool 1, which further prevents the formation of vapor film and increases the heat exchange rate of the quenching medium inside the quenching pool 1. This effectively prevents the vapor film from hindering the cooling of the spring steel wire and the problem of the cooling capacity of the quenching medium decreasing due to the increase in temperature.

[0036] Example 2

[0037] In actual use, it was found that the temperature of the quenching medium after cooling was too low. Direct application to the surface of the steel wire could easily cause the spring steel wire to cool down too quickly, resulting in cracking of the steel wire. Further improvements were made based on the above embodiments.

[0038] Based on the above embodiments, during use, the temperature of the quenching medium inside the spray chamber 24 is detected by a temperature sensor inside the spray chamber 24. The electromagnetic component 45 is energized, causing it to attract the sealing component 43, which then slides inside the regulating cylinder 41. This removes the seal from the third through hole 42. Part of the quenching medium extracted by the extraction component 3 returns to the external quenching medium cooling system through the fourth through hole 34, while another part enters the regulating cylinder 41 through the pipe 33 and then through the third through hole 42 and the drive pump 25 into the first through hole 22. The quenching medium inside the quenching chamber 24 mixes with the cooled quenching medium, thus regulating the temperature of the quenching medium entering the spray chamber 24. The magnetic force of the electromagnetic component 45 is changed according to the temperature of the quenching medium inside the spray chamber 24. When the temperature of the quenching medium is too low, increasing the magnetic force of the electromagnetic component 45 increases the attraction of the electromagnetic component 45 to the sealing component 43, compressing the elastic component 44, thereby increasing the opening of the third through hole 42 and increasing the amount of quenching medium flowing into the first through hole 22 through the third through hole 42. Conversely, when the temperature of the quenching medium inside the spray chamber 24 is too high, decreasing the magnetic force of the electromagnetic component 45 reduces the attraction of the electromagnetic component 45 to the sealing component 43, restoring the elastic component 44, thereby reducing the opening of the third through hole 42 and reducing the amount of quenching medium flowing into the first through hole 22 through the third through hole 42. By adjusting the component 4, some of the quenching medium inside the extraction component 3 enters the spray component 2, adjusting the temperature of the quenching medium sprayed out by the spray component 2, preventing the quenching medium temperature directly acting on the surface of the steel wire from being too low, which would cause the spring steel wire to cool down too quickly and crack.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quenching device for processing special spring steel wire for automobile seats, comprising a quenching tank, characterized in that, Also includes: The spraying component has multiple spray holes in its middle section, which are used to spray the quenching medium inside the spraying component onto the surface of the spring steel wire. An extractor is provided in the quenching tank, and the extractor is capable of generating negative pressure to extract the quenching medium from inside the quenching tank. An adjustment component is provided at one end of the extractor. The quenching medium extracted by the extractor can enter the interior of the spraying component through the adjustment component, thereby adjusting the temperature of the quenching medium inside the spraying component.

2. The quenching device for processing special spring steel wire for automobile seats according to claim 1, characterized in that: The spraying component has a first through hole inside and a mounting groove inside. An impeller is rotatably connected inside the mounting groove. The first through hole is connected to the mounting groove.

3. The quenching device for processing special spring steel wire for automobile seats according to claim 2, characterized in that: The extractor has a second through hole inside, and a turbine is rotatably connected inside the second through hole. The second through hole is connected to the quenching pool, and the position of the second through hole is lower than the liquid level of the quenching medium inside the quenching pool.

4. The quenching device for processing special spring steel wire for automobile seats according to claim 1, characterized in that: The adjustment assembly includes an adjustment cylinder disposed at one end of the extraction component. The adjustment cylinder has a third through hole inside and a sealing element is slidably connected inside the adjustment cylinder. The sealing element can adjust the opening degree of the third through hole by sliding.

5. The quenching device for processing special spring steel wire for automobile seats according to claim 4, characterized in that: The extraction component has a pipe inside, the regulating cylinder is connected to the pipe, the extraction component has a fourth through hole inside, the fourth through hole is connected to the second through hole through a pipe, and a one-way valve is provided at the third through hole.

6. The quenching device for processing special spring steel wire for automobile seats according to claim 5, characterized in that: An elastic element is provided inside the adjusting cylinder. One end of the elastic element is fixedly connected to the sealing element, and the other end of the elastic element is fixedly connected to the inner wall of the adjusting cylinder. An electromagnetic element is fixedly connected inside the adjusting cylinder, and the electromagnetic element drives the sealing element to move by generating magnetic force.

7. The quenching device for processing special spring steel wire for automobile seats according to claim 3, characterized in that: The impeller is fixedly connected to both ends by a connecting shaft. One end of the connecting shaft passes through the injection component and the extraction component. One end of the turbine is fixedly connected to the end of the connecting shaft away from the impeller.

8. The quenching device for processing special spring steel wire for automobile seats according to claim 7, characterized in that: The circumferential array of spray holes is arranged in the middle of the spraying component. The spraying component has a spraying cavity inside. The spray holes are connected to the spraying cavity. The spraying cavity is connected to the mounting groove. A temperature sensor is installed inside the spraying cavity.

9. A quenching device for processing special spring steel wire for automobile seats according to claim 8, characterized in that: A fixing block is fixedly connected to the side wall of the spraying component. The fixing block is fixedly connected to the inner wall of the quenching pool. A drive pump is fixedly connected to one end of the first through hole. The drive pump is provided with two liquid inlets and one liquid outlet. One liquid inlet is connected to the external quenching medium cooling system, and the other liquid inlet is connected to the third through hole.

10. A quenching device for processing special spring steel wire for automobile seats according to claim 9, characterized in that: There are two extraction components, which are fixedly connected to both ends of the injection component. There are multiple injection components, which are arranged in an array along the axis of the spring steel wire.

Images