Production method of stainless steel strip for constant force spring

Abstract

The present invention relates to a production method of stainless steel strip for constant force springs, which comprises the following steps: first, select a 301B type stainless steel strip blank with a tensile strength of more than 900 N / mm2 and a hardness of more than HV200, then perform a primary rolling using a precision rolling mill, after the rolling is completed, wind it up through a winding device, and then remove the rolling oil on the stainless steel strip through a degreasing and cleaning device; the present invention has the advantage of improving the production efficiency of stainless steel coils.

Description

Technical Field

[0001] The present invention belongs to the technical field of stainless steel strip production, and particularly relates to a production method of stainless steel strip for constant force springs. Background Art

[0002] Precision stainless steel strips are widely used in various electronic products, sanitary wares, conveyor belts, vehicle bolts, etc., and can also be used to produce ordinary precision springs. Through cold deformation processing, the strength and hardness of the stainless steel strip can be improved, and sufficient plasticity and toughness can be retained. Coupled with the good rust resistance of the stainless steel strip under atmospheric conditions, the service life of the spring is relatively long.

[0003] In the prior art, the production of stainless steel strips requires degreasing and cleaning of the stainless steel strips through a degreasing and cleaning unit. During degreasing and cleaning, the unwinding device and the rewinding device need to be placed at both ends of the degreasing and cleaning unit respectively. Then, the stainless steel coil is placed on the unwinding device, and one end of the stainless steel coil is passed through the degreasing and cleaning unit and connected to the rewinding device. During the rewinding process of the rewinding device, the degreasing and cleaning of the stainless steel strip is realized through the degreasing and cleaning unit. The degreasing and cleaning speed of the degreasing and cleaning unit needs to be confirmed according to the length of the stainless steel strip. When there is a long stainless steel strip, it takes a long time to clean, which affects the production speed of the stainless steel strip. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a production method of stainless steel strip for constant force springs with improved production efficiency of stainless steel coils.

[0005] The technical solution of the present invention is as follows:

[0006] A production method of stainless steel strip for constant force springs includes the following steps:

[0007] S1: First, select a 301B type stainless steel strip blank with a tensile strength of more than 900 N / mm2 and a hardness of more than HV200. Then, perform primary rolling using a precision rolling mill. After rolling is completed, wind it up through a winding device, and then remove the rolling oil on the stainless steel strip through a degreasing and cleaning device;

[0008] S2: Anneal the stainless steel strip with the rolling oil removed in S1 through a bright annealing line at 1040 - 1150 °C. After annealing is completed, when the temperature drops to the range of 425 - 815 °C, rapidly cool it through a cooling medium. After cooling is completed, perform secondary rolling using a precision rolling mill. The rolled stainless steel strip is wound up through a winding device, and then cleaned twice through a degreasing and cleaning device;

[0009] S3: Subject the stainless steel strip that has been secondarily cleaned in S2 to tension leveling by a tension leveling machine. After the tension leveling is completed, place the stainless steel strip in a continuous furnace for medium- and high-temperature stress annealing. When the temperature reaches 480°C - 650°C, move it at a speed of 2 - 3 meters per minute.

[0010] S4: Subject the stainless steel strip that has undergone medium- and high-temperature stress annealing in S3 to reverse tension leveling by a tension leveling machine, and then obtain the stainless steel strip for constant force springs.

[0011] Furthermore, the cooling medium is ammonia decomposition gas; using ammonia decomposition gas to cool the stainless steel strip can protect the stainless steel strip and achieve good bright and non-oxidized effects.

[0012] Furthermore, the stainless steel strip in step S4 is polished by a polishing device and then subjected to reverse tension leveling by a tension leveling machine; the polishing of the stainless steel strip is achieved by the polishing device, so that an oxide film is formed on the surface of the stainless steel strip to protect the stainless steel strip from further oxidation and corrosion.

[0013] Furthermore, the winding device includes a winding plate, supporting feet located on the lower side of the winding plate, a turntable rotatably connected to the winding plate, two fixed shafts located on the side of the turntable away from the winding plate, a strip-shaped winding cylinder for winding the stainless steel strip, and an auxiliary device located on one side of the winding plate. The winding plate is provided with a winding motor for driving the turntable to rotate;

[0014] The strip-shaped winding cylinder is inserted on the fixed shaft, and a limiting cylinder threadedly connected to the fixed shaft is provided on the side of the strip-shaped winding cylinder away from the turntable;

[0015] The auxiliary device includes a fixing plate located on the winding plate, a driving shaft and a driven shaft rotatably connected to the fixing plate, and a power motor for driving the driving shaft to rotate. The driving shaft and the driven shaft clamp the stainless steel strip, and the speed at which the driving shaft and the driven shaft convey the stainless steel strip is greater than the winding speed of the strip-shaped winding cylinder, so that there are gaps between the stainless steel strips wound by the strip-shaped winding cylinder;

[0016] The winding of the stainless steel strip is achieved by the winding device, so that there are still gaps between the wound stainless steel strips, which is convenient for degreasing and cleaning.

[0017] Furthermore, the degreasing and cleaning equipment includes a cleaning tank, a liquid storage tank located in the cleaning tank, an ultrasonic generator located on the outer side of the liquid storage tank, a cleaning frame located in the liquid storage tank, at least two steel cables hung on the cleaning frame, a lifting device connected to the other ends of the steel cables, a transverse movement device connected to the lifting device, and a threaded column for the transverse movement device to move horizontally. A plurality of limiting steel cables are provided on the front, rear, left, and right four sides of the cleaning frame;

[0018] The cleaning frame is composed of an upper frame, a lower frame, and four connecting rods. One or more placement frames connected to the connecting rods are arranged above the lower frame. The upper side of the placement frame and the upper side of the lower frame are both provided with perforated plates with limiting frames. The limiting frames can be inserted into the placement frame and the lower frame. When there are two or more placement frames arranged vertically, the upper side area of the perforated plate above is larger than the upper side area of the perforated plate below, so that the perforated plate passes through the upper placement frame and is fixed on the lower placement frame;

[0019] The perforated plate is provided with limiting columns for inserting strip-shaped winding drums;

[0020] The lifting and horizontal movement adjustment of the stainless steel belt are realized through a lifting device and a horizontal movement device, and the placement of the stainless steel belt is realized through the cleaning frame and the perforated plate, which is convenient for the degreasing cleaning of the stainless steel belt.

[0021] Furthermore, hooks for hanging steel cables are arranged at the centers of both ends of the perforated plate and at the centers of both sides of the cleaning frame; the connection between the lifting device and the perforated plate and the cleaning frame is facilitated through the hooks, which is convenient for connection.

[0022] Furthermore, the lifting device includes a fixed frame located on the lower side of the horizontal movement device, a steel cable winding wheel located inside the fixed frame, and a lifting motor for driving the steel cable winding wheel to rotate. The steel cable passes through the fixed frame and is connected to the steel cable winding wheel; the winding of the steel cable is realized through the steel cable winding wheel, so as to facilitate the lifting adjustment of the cleaning frame.

[0023] Furthermore, an auxiliary wheel located on the fixed frame is arranged on one side of the steel cable winding wheel. The center of the auxiliary wheel is horizontal with the center of the steel cable winding wheel. The steel cable passes through the auxiliary wheel and is connected to the steel cable winding wheel; the friction between the steel cable and the fixed frame is avoided through the auxiliary wheel, reducing noise.

[0024] Furthermore, the horizontal movement device includes a moving cylinder sleeved on a threaded column, two moving motors located on the side of the moving cylinder, two threaded cylinders threadedly connected to the threaded column, a guiding cylinder fixed on the moving cylinder, and a guiding column passing through the guiding cylinder. The moving cylinder is connected to the fixed frame. The threaded cylinder is rotatably connected to the moving cylinder, and a sprocket is arranged on the rotating shaft of the moving motor. The sprocket is provided with a chain for driving the threaded cylinder to rotate; the horizontal movement of the cleaning frame is realized through the cooperation of the threaded cylinder and the threaded column, and the guiding of the horizontal movement is realized through the cooperation of the guiding cylinder and the guiding column, ensuring the stability of the movement.

[0025] Furthermore, the guiding column is placed parallel to the threaded column; the guiding of the moving cylinder is realized through the guiding column placed parallel to the threaded column, avoiding the situation that the moving cylinder cannot move due to an included angle between the guiding column and the threaded column during horizontal movement.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The present invention uses an auxiliary device to drive the movement of the stainless steel strip and realizes the winding of the stainless steel strip through a strip winding drum, so that there are gaps between the stainless steel strips wound by the strip winding drum, facilitating the entry of the cleaning solution between the stainless steel strips and facilitating the cleaning of the stainless steel strip.

[0028] 2. The present invention first realizes the cleaning of the stainless steel coil through a degreasing and cleaning device, which speeds up the cleaning speed of the stainless steel strip and improves the production efficiency of the stainless steel coil.

[0029] 3. The present invention uses an orifice plate and a cleaning frame to place the stainless steel strip, and realizes the lifting and horizontal movement adjustment of the stainless steel strip through a lifting device and a horizontal movement device, thus facilitating the cleaning of the stainless steel strip.

[0030] In summary, the present invention has the advantage of improving the production efficiency of the stainless steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the degreasing and cleaning device of the present invention;

[0032] Figure 2 is of the present invention Figure 1 schematic structural diagram of the cleaning frame;

[0033] Figure 3 is of the present invention Figure 2 schematic structural diagram of the moving device;

[0034] Figure 4 is of the present invention Figure 1 schematic position diagram of the limiting frame;

[0035] Figure 5 is a schematic structural diagram of the winding device of the present invention;

[0036] Figure 6 is of the present invention Figure 5 schematic sectional structural diagram of the winding plate;

[0037] Figure 7 is of the present invention Figure 5 schematic sectional structural diagram of the auxiliary device.

[0038] In the figure, 1. winding plate, 2. turntable, 3. strip winding drum, 4. support feet, 5. driven shaft, 6. driving shaft, 7. fixing plate, 8. limiting cylinder, 9. fixed shaft, 10. winding motor, 11. power motor, 12. guiding cylinder, 13. moving motor, 14. sprocket, 15. hook, 16. orifice plate, 17. cleaning frame, 18. cleaning tank, 20. limiting post, 21. steel cable, 23. guiding post, 24. threaded post, 25. moving cylinder, 26. limiting steel cable, 27. fixed ring, 28. threaded cylinder, 29. auxiliary wheel, 30. lifting motor, 31. steel cable winding wheel, 32. limiting frame, 33. placing frame. Detailed implementation mode

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1

[0041] As Figures 1-7 shown, a production method of stainless steel strip for constant force spring includes the following steps:

[0042] S1: First, select a 301B type stainless steel strip blank with a tensile strength of more than 900 N / mm2 and a hardness of more than HV200. Then, perform primary rolling using a precision rolling mill. After the rolling is completed, wind it through a winding device, and then remove the rolling oil on the stainless steel strip through a degreasing and cleaning device.

[0043] S2: Anneal the stainless steel strip from which the rolling oil has been removed in S1 through a bright annealing line at 1040 °C. After the annealing is completed, when the temperature drops to the 425 °C range, rapidly cool it with ammonia decomposition gas. After the cooling is completed, perform secondary rolling using a precision rolling mill. The rolled stainless steel strip is wound through a winding device, and then cleaned twice through a degreasing and cleaning device.

[0044] S3: Straighten the stainless steel strip that has been cleaned twice in S2 through a straightening machine. After the straightening is completed, put the stainless steel strip into a continuous furnace for medium and high temperature stress annealing. When the temperature reaches 480 °C, move at a speed of 2 meters per minute.

[0045] S4: Reverse straighten the stainless steel strip that has undergone medium and high temperature stress annealing in S3 through a straightening machine, and then obtain the stainless steel strip for constant force spring.

[0046] The above-mentioned stainless steel strip for constant force springs uses a degreasing and cleaning device and a winding device to clean and wind the stainless steel coil, which speeds up the cleaning speed of the stainless steel strip and improves the production efficiency of the stainless steel strip.

[0047] In this embodiment, the stainless steel strip in step S4 is reverse tension straightened by a tension leveling machine after being polished by a polishing device; a layer of oxide film is generated on the stainless steel strip by polishing to protect the stainless steel strip from further oxidation and corrosion.

[0048] In this embodiment, the winding device includes a winding plate 1, support feet 4 fixed to the lower side of the winding plate 1 by bolts, a turntable 2 connected to the winding plate 1 by bearings, two fixed shafts 9 fixed to the side of the turntable 2 away from the winding plate 1 by bolts, a strip-shaped winding drum 3 for winding the stainless steel strip, and an auxiliary device located on one side of the winding plate 1. The winding plate 1 is fixed with a winding motor 10 by bolts. The turntable 2 is fixed with a rotating shaft by bolts. The rotating shaft is connected to the winding plate 1 by bearings. The rotating shaft of the winding motor 10 is key-connected to the rotating shaft. The strip-shaped winding drum 3 is inserted on the fixed shaft 9, and a limiting cylinder 8 threadedly connected to the fixed shaft 9 is provided on the side of the strip-shaped winding drum 3 away from the turntable 2. The auxiliary device includes a fixing plate 7 fixed to the winding plate 1 by bolts, a driving shaft 6 and a driven shaft 5 connected to the fixing plate 7 by bearings, and a power motor 11. The driving shaft 6 and the driven shaft 5 are both fixed with rotating shafts by bolts. The rotating shafts are connected to the fixing plate 7 by bearings. The rotating shafts are key-connected to the rotating shaft of the power motor 11. The driving shaft 6 and the driven shaft 5 clamp the stainless steel strip. The conveying speed of the driving shaft 6 and the driven shaft 5 for the stainless steel strip is greater than the winding speed of the strip-shaped winding drum 3, so that there are gaps between the stainless steel strips wound on the strip-shaped winding drum 3;

[0049] During winding, the stainless steel strip is passed through the gap between the driving shaft 6 and the driven shaft 5, then the turntable 2 is rotated so that the stainless steel coil is wound on the strip-shaped winding drum 3. Then the power motor 11 drives the driving shaft 6 to rotate. The driving shaft 6 drives the stainless steel strip to move. The movement of the stainless steel strip drives the driven shaft 5 to rotate. The winding motor 10 drives the turntable 2 to rotate. The strip-shaped winding drum 3 on the turntable 2 winds the stainless steel strip. Because the conveying speed of the driving shaft 6 and the driven shaft 5 for the stainless steel strip is greater than the winding speed of the strip-shaped winding drum 3, the stainless steel strip wound on the strip-shaped winding drum 3 is wound loosely, so that there are gaps between the stainless steel strips on the strip-shaped winding drum 3. When the winding is completed, the limiting cylinder 8 is rotated counterclockwise to remove the limiting cylinder 8 from the fixed shaft 9. At this time, the strip-shaped winding drum 3 is no longer limited. Then the wound strip-shaped winding drum 3 is removed. After replacing it with a new strip-shaped winding drum 3, the limiting cylinder 8 is rotated clockwise and fixed on the fixed shaft 9.

[0050] In this embodiment, the degreasing and cleaning device includes a cleaning pool 18, a liquid storage pool 34 located inside the cleaning pool 18, an ultrasonic generator located on the outer side of the liquid storage pool 34, a cleaning frame 17 located inside the liquid storage pool 34, two steel cables 21 hung on the cleaning frame 17, a lifting device connected to the other ends of the steel cables 21, a transverse movement device connected to the lifting device, and a threaded column 24 for the transverse movement device to move horizontally. The ultrasonic generator is fixed on the cleaning pool 18 by bolts. A plurality of limiting steel cables 26 are fixed on the front, rear, left, and right sides of the cleaning frame 17 by bolts. The cleaning frame 17 is composed of an upper frame, a lower frame, and four connecting rods. Two placement frames 33 connected to the connecting rods by bolts are arranged above the lower frame. Orifice plates 16 with limiting frames 32 are placed on the upper side surfaces of the placement frames 33 and the upper side surface of the lower frame. The limiting frames 32 are integrally formed on the orifice plates 16. The limiting frames 32 can be inserted into the placement frames 33 and the lower frame. The upper side surface area of the upper orifice plate 16 is larger than the upper side surface area of the lower orifice plate 16, so that the orifice plate 16 passes through the upper placement frame 33 and is fixed on the lower placement frame 33. Limiting columns 20 for inserting strip winding drums 3 are fixed on the orifice plates 16 by bolts;

[0051] When cleaning is required, the orifice plate 16 with the smallest upper side surface area is inserted into the lower frame through the limiting frame 32, and then the strip winding drum 3 wound with the stainless steel strip is inserted onto the limiting column 20 on the orifice plate 16 at the bottommost position. Then, the orifice plates 16 and the strip winding drums 3 are fixed one by one according to the above process. After the fixing is completed, the lifting device drives the cleaning frame 17 to move upward through the steel cable 21 and stops when the lower side surface of the cleaning frame 17 is higher than the upper side surface of the cleaning pool 18. Then, the transverse movement device drives the cleaning frame 17 to move horizontally above the liquid storage pool 34 through the lifting device and the steel cable 21. Then, the lifting device drives the cleaning frame 17 to descend into the liquid storage pool 34 through the steel cable 21. The ultrasonic generator works, and the cleaning solution in the liquid storage pool 34 performs degreasing cleaning on the stainless steel coil. When the degreasing cleaning is completed, the lifting device drives the cleaning frame 17 to move upward above the cleaning pool 18, and then the transverse movement device moves the cleaning frame 17 to one side of the cleaning pool 18, and then the lifting device drives the cleaning frame 17 to descend, and the stainless steel coil in the cleaning frame 17 can be taken out.

[0052] In this embodiment, hooks 15 for hanging the steel cable 21 are fixed at the centers of both ends of the orifice plate 16 and at the centers of both sides of the cleaning frame 17 by bolts; when it is necessary to hang the cleaning frame 17, the steel cable 21 is hung on the hook 15, and then the lifting and left-right adjustment can be carried out. When it is necessary to take out the stainless steel strip from the cleaning frame 17, the steel cable 21 is removed from the hook 15 of the cleaning frame 17 and then hung on the hook 15 of the orifice plate 16, and the orifice plate 16 can be taken out of the cleaning frame 17 through the lifting device and the transverse movement device.

[0053] In this embodiment, the lifting device includes a fixed frame located on the lower side of the transverse movement device, a steel cable winding wheel 31 fixed in the fixed frame by bolts, and a lifting motor 30 for driving the steel cable winding wheel 31 to rotate. A sprocket is key-connected to the rotating shaft of the lifting motor 30 and one side of the steel cable winding wheel 31. The sprocket of the lifting motor 30 is connected to the sprocket of the steel cable winding wheel 31 through a chain. The steel cable 21 passes through the fixed frame and is tied to the steel cable winding wheel 31. When the cleaning frame 17 needs to rise, the rotating shaft of the lifting motor 30 rotates clockwise to drive the steel cable winding wheel 31 to rotate clockwise. The steel cable winding wheel 31 rotates to wind the steel cable 21. At this time, the cleaning frame 17 rises. When it needs to descend, the rotating shaft of the lifting motor 30 rotates counterclockwise.

[0054] In this embodiment, an auxiliary wheel 29 fixed to the fixed frame by bolts is provided on one side of the steel cable winding wheel 31. The center of the auxiliary wheel 29 is horizontal with the center of the steel cable winding wheel 31. The steel cable 21 passes through the auxiliary wheel 29 and is connected to the steel cable winding wheel 31. When the steel cable winding wheel 31 rotates, the steel cable 21 passes through the auxiliary wheel 29 and is wound on the steel cable winding wheel 31, avoiding friction between the steel cable 21 and the fixed frame.

[0055] In this embodiment, the transverse movement device includes a moving cylinder 25 sleeved on a threaded column 24, two moving motors 13 fixed to the side surface of the moving cylinder 25 by bolts, two threaded cylinders 28 threadedly connected to the threaded column 24, a guiding cylinder 12 fixed to the moving cylinder 25 by bolts, and a guiding column 23 sleeved on the guiding cylinder 12. The guiding column 23 is placed parallel to the threaded column 24. The moving cylinder 25 is connected to the fixed frame. Fixed rings 27 are integrally formed on both sides of the threaded cylinder 28. The fixed rings 27 are connected to the moving cylinder 25 through bearings. A sprocket 14 is provided on the rotating shaft of the moving motor 13. An opening is provided on the moving cylinder 25. The sprocket 14 is provided with a chain passing through the opening and connected to the threaded cylinder 28. Chain teeth for connecting the chain are provided on the outer side surface of the threaded cylinder 28, so that the sprocket can drive the threaded cylinder 28 to rotate. When it needs to move to the left, both the threaded column 24 and the guiding column 23 are fixed to the wall by bolts. The moving motor 13 rotates to drive the threaded cylinder 28 to rotate clockwise through the sprocket and the chain. The threaded cylinder 28 rotates and moves along the threaded column 24. The threaded cylinder 28 drives the moving cylinder 25 to move. At this time, the guiding cylinder 12 moves along the guiding column 23. The moving cylinder 25 drives the cleaning frame 17 to move through the lifting device and the steel cable 21, thereby realizing the transverse movement of the cleaning frame 17. When reaching the specified position, the output shaft of the moving motor 13 stops rotating. When it needs to move to the right, the moving motor 13 drives the threaded cylinder 28 to rotate counterclockwise.

[0056] Embodiment 2:

[0057] A production method of stainless steel strip for constant force spring, comprising the following steps:

[0058] S1: First, select a 301B type stainless steel strip blank with a tensile strength of more than 900 N / mm2 and a hardness of more than HV200. Then, perform a primary rolling using a precision rolling mill. After the rolling is completed, wind it through a winding device, and then remove the rolling oil on the stainless steel strip through a degreasing and cleaning device;

[0059] S2: Anneal the stainless steel strip with the rolling oil removed in S1 through a bright annealing line at 1150 °C. After the annealing is completed, when the temperature drops to the range of 815 °C, rapidly cool it through ammonia decomposition gas. After the cooling is completed, perform a secondary rolling using a precision rolling mill. The rolled stainless steel strip is wound through a winding device, and then cleaned twice through a degreasing and cleaning device;

[0060] S3: Straighten the stainless steel strip that has been cleaned twice in S2 through a straightening machine. After the straightening is completed, put the stainless steel strip into a continuous furnace for medium and high temperature stress annealing. When the temperature reaches 650 °C, move at a speed of 3 meters per minute;

[0061] S4: Reverse straighten the stainless steel strip that has undergone medium and high temperature stress annealing in S3 through a straightening machine, and then obtain the stainless steel strip for constant force spring.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A production method of stainless steel strip for constant force spring, characterized in that: It includes the following steps: S1: First, select a 301B type stainless steel strip blank with a tensile strength of 900 N / mm 2 or more and a hardness of HV200 or more. Then, perform a single rolling using a precision rolling mill. After the rolling is completed, wind it up through a winding device, and then remove the rolling oil on the stainless steel strip through a degreasing and cleaning device; S2: Anneal the stainless steel strip with rolling oil removed in S1 through a bright annealing line at 1040 - 1150 °C. After annealing is completed, when the temperature drops to the range of 425 - 815 °C, rapidly cool it through a cooling medium. After cooling is completed, perform secondary rolling through a precision rolling mill. The rolled stainless steel strip is wound through a winding device, and then cleaned twice through a degreasing and cleaning device; S3: Straighten the stainless steel strip that has been cleaned twice in S2 through a straightening machine. After straightening is completed, put the stainless steel strip into a continuous furnace for medium and high temperature stress annealing. When the temperature reaches 480 °C - 650 °C, move at a speed of 2 - 3 meters per minute; S4: Reverse straighten the stainless steel strip that has undergone medium and high temperature stress annealing in S3 through a straightening machine, and then obtain the stainless steel strip for constant force springs; The winding device includes a winding plate, supporting feet located on the lower side of the winding plate, a turntable rotatably connected to the winding plate, two fixed shafts located on the side of the turntable away from the winding plate, a strip-shaped winding cylinder for winding the stainless steel strip, and an auxiliary device located on one side of the winding plate. The winding plate is provided with a winding motor for driving the turntable to rotate; The strip-shaped winding cylinder is inserted into the fixed shaft, and a limiting cylinder threadedly connected to the fixed shaft is provided on the side of the strip-shaped winding cylinder away from the turntable; The auxiliary device includes a fixing plate located on the winding plate, a driving shaft and a driven shaft rotatably connected to the fixing plate, and a power motor for driving the driving shaft to rotate. The driving shaft and the driven shaft clamp the stainless steel strip, and the conveying speed of the driving shaft and the driven shaft for the stainless steel strip is greater than the winding speed of the strip-shaped winding cylinder, so that there are gaps between the stainless steel strips wound by the strip-shaped winding cylinder.

2. The production method of the stainless steel strip for constant force springs according to claim 1, characterized in that: The cooling medium is ammonia decomposition gas.

3. The production method of the stainless steel strip for constant force springs according to claim 1, characterized in that: The stainless steel strip in step S4 is polished by a polishing device and then reverse straightened by a straightening machine.

4. The production method of the stainless steel strip for constant force springs according to claim 1, characterized in that: The degreasing and cleaning device includes a cleaning pool, a liquid storage pool located inside the cleaning pool, an ultrasonic generator located on the outer side of the liquid storage pool, a cleaning frame located inside the liquid storage pool, at least two steel cables hung on the cleaning frame, a lifting device connected to the other ends of the steel cables, a transverse movement device connected to the lifting device, and a threaded column for the transverse movement device to move horizontally. A plurality of limiting steel cables are provided on the front, back, left, and right sides of the cleaning frame; The cleaning frame is composed of an upper frame, a lower frame, and four connecting rods. A placing frame connected to the connecting rods is provided above the lower frame. Perforated plates with limiting frames are placed on the upper side of the placing frame and the upper side of the lower frame. The limiting frames can be inserted into the placing frame and the lower frame. When there are two or more placing frames arranged vertically, the upper side area of the perforated plate above is larger than the upper side area of the perforated plate below, so that the perforated plate passes through the upper placing frame and is fixed to the lower placing frame; Limiting columns for inserting the strip-shaped winding cylinder are provided on the perforated plate.

5. The production method of the stainless steel strip for constant force springs according to claim 4, characterized in that: Hooks for hanging the steel cables are provided at the centers of both ends of the perforated plate and at the centers of both sides of the cleaning frame.

6. The production method of the stainless steel strip for constant force springs according to claim 5, characterized in that: The lifting device includes a fixed frame located on the lower side of the transverse movement device, a steel cable winding wheel located inside the fixed frame, and a lifting motor for driving the steel cable winding wheel to rotate. The steel cable passes through the fixed frame and is connected to the steel cable winding wheel.

7. The production method of the stainless steel strip for constant force springs according to claim 6, characterized in that: An auxiliary wheel located on the fixed frame is arranged on one side of the steel cable winding wheel. The center of the auxiliary wheel is horizontal with the center of the steel cable winding wheel. The steel cable passes through the auxiliary wheel and is connected to the steel cable winding wheel.

8. The production method of the stainless steel strip for constant force springs according to claim 7, characterized in that: The transverse movement device includes a moving cylinder sleeved on a threaded column, two moving motors located on the side surfaces of the moving cylinder, two threaded cylinders threadedly connected to the threaded column, a guiding cylinder fixed on the moving cylinder, and a guiding column sleeved on the guiding cylinder. The moving cylinder is connected to the fixed frame. The threaded cylinder is rotatably connected to the moving cylinder, and a sprocket is arranged on the rotating shaft of the moving motor. The sprocket is provided with a chain for driving the threaded cylinder to rotate.

9. The production method of the stainless steel strip for constant force springs according to claim 8, characterized in that: The guiding column is placed parallel to the threaded column.

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