Coil spring production device

Abstract

The utility model discloses a coil spring production device, and relates to the field of mattress manufacturing. A coil spring production device comprises a cooling pool and further comprises supports symmetrically and fixedly connected to the two sides of the upper end of the cooling pool. The quenching shell is rotationally connected between the two brackets through a rotating shaft; the driving mechanism is used for driving the quenching shell to rotate and is mounted on one side of the cooling pond; according to the utility model, a plurality of coil springs can be simultaneously quenched, so that the production efficiency is greatly improved, the requirements of large-scale coil spring production are met, for enterprises for batch production of the coil springs for mattresses, the productivity can be remarkably improved, the market competitiveness can be enhanced, and meanwhile, when the coil springs need to be conveyed into a cooling pool for cooling and quenching after heating is completed, the production cost is reduced. The high-temperature coil spring can rapidly enter the cooling liquid, the time needed for transferring the coil spring to a place is shortened, and the problem that the quenching quality is affected due to the fact that the temperature of the coil spring is greatly reduced in the process of transferring the coil spring to the place is solved.

Description

Technical Field

[0001] This utility model belongs to the field of mattress manufacturing technology, specifically, it relates to a spring production device. Background Technology

[0002] In the manufacturing of products such as mattresses, coil springs are a key support component, and their quality and production efficiency are of great significance to the development of the entire industry. In the production process of coil springs, quenching is one of the key steps. Its purpose is to improve the hardness and strength of the spring, enhance its elasticity and fatigue resistance, thereby ensuring that the mattress can provide stable support during long-term use.

[0003] Traditional methods of quenching round springs mostly employ open flame heating, which has significant drawbacks. On the one hand, open flame heating has relatively low thermal efficiency, with heat transfer relying mainly on thermal radiation and conduction. This results in slow heating and a long quenching time. In large-scale production, a large amount of time is consumed in the heating process, severely limiting the improvement of production efficiency and failing to meet the ever-increasing market demand. On the other hand, after heating the round spring, it needs to be removed from the heating furnace and sent to a cooling pool for rapid cooling. During the transfer process, the round spring may experience a significant temperature drop, affecting the quality of subsequent quenching. Therefore, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a spring production device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a coil spring production device, including a cooling pool, and further including: supports, symmetrically fixedly connected to the upper two sides of the cooling pool; a quenching shell, rotatably connected between the two supports via a rotating shaft; a driving mechanism for driving the quenching shell to rotate, installed on one side of the cooling pool; high-frequency induction heating coils, equidistantly arranged inside the quenching shell; a high-frequency power supply, fixedly installed at the bottom of the quenching shell near the high-frequency induction heating coils, with multiple high-frequency induction heating coils electrically connected to adjacent high-frequency power supplies; and support rods, equidistantly installed inside the quenching shell, with the high-frequency induction heating coils sleeved on the outside of adjacent support rods.

[0006] Furthermore, the driving mechanism includes a stepper motor and a transmission assembly. The stepper motor is fixedly installed on one side of the cooling pool, and the output end of the stepper motor is connected to a rotating shaft on the same side through the transmission assembly.

[0007] To facilitate the placement of the coil spring inside the high-frequency induction heating coil and ensure the heating effect of the outermost coil spring, a limiting ring is further fixedly connected to the side of the support rod away from the opening of the quenching shell, and the limiting ring is located inside the high-frequency induction heating coil.

[0008] To facilitate the fitting of the coil spring and improve the uniformity of heating, a groove is provided on the side of the quenching shell away from the opening end. A lifting plate is slidably connected in the groove. A through groove is opened in the groove near the support rod, which is interconnected with the interior of the quenching shell. The end of the support rod near the groove passes through the through groove and is fixedly connected to the lifting plate. A lifting part for controlling the lifting of the lifting plate is provided in the groove.

[0009] Furthermore, the lifting part is a lead screw, which is vertically rotatably connected in a groove and threadedly connected to the lifting plate.

[0010] To further reduce the amount of water vapor entering the quenching shell, a guide plate is fixedly connected to the upper end of the cooling pool near the opening of the quenching shell, a protective shell is fixedly connected to the bottom of the quenching shell, and the high-frequency power supply is installed inside the protective shell.

[0011] To further reduce the amount of water vapor entering the quenching shell, the cooling pool has multiple openings on the upper side away from the guide plate, and a suction fan is fixedly installed at each opening.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By installing the quenching shell above the cooling pool and setting multiple sets of high-frequency power supplies, high-frequency induction heating coils and support rods inside the quenching shell, multiple coil springs can be quenched simultaneously during the quenching operation, which greatly improves production efficiency and meets the needs of large-scale coil spring production. For enterprises that mass-produce mattress coil springs, it can significantly increase production capacity and enhance market competitiveness. At the same time, when the coil springs need to be transported into the cooling pool for cooling and quenching after heating, the high-temperature coil springs can quickly enter the coolant, reducing the time required for transfer and avoiding the problem of excessive temperature drop of the coil springs during the transfer process, which affects the quenching quality.

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the internal structure of the quenching shell and protective shell of this utility model.

[0018] In the diagram: 1. Cooling pool; 101. Support; 102. Rotating shaft; 103. Guide plate; 104. Fan; 2. Quenching shell; 201. Protective shell; 202. High-frequency power supply; 203. High-frequency induction heating coil; 204. Support rod; 205. Limiting ring; 206. Groove; 207. Through slot; 208. Lifting plate; 209. Lead screw; 3. Stepper motor; 301. Transmission assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] Example 1:

[0021] Reference Figures 1-3 A coil spring production apparatus includes a cooling pool 1, and further includes: brackets 101 symmetrically fixedly connected to the upper two sides of the cooling pool 1; a quenching shell 2 rotatably connected between the two brackets 101 via a rotating shaft 102; a drive mechanism for driving the quenching shell 2 to rotate, installed on one side of the cooling pool 1; high-frequency induction heating coils 203 equidistantly arranged inside the quenching shell 2; a high-frequency power supply 202 fixedly installed at the bottom of the quenching shell 2 near the high-frequency induction heating coils 203, with multiple high-frequency induction heating coils 203 electrically connected to adjacent high-frequency power supplies 202; and support rods 204 equidistantly installed inside the quenching shell 2, with the high-frequency induction heating coils 203 sleeved on the outer side of adjacent support rods 204.

[0022] The drive mechanism includes a stepper motor 3 and a transmission assembly 301. The stepper motor 3 is fixedly installed on one side of the cooling pool 1, and the output end of the stepper motor 3 is connected to the rotating shaft 102 on the same side through the transmission assembly 301.

[0023] In the production and processing of springs for spring mattresses, when it is necessary to quench the shaped springs to improve their hardness and strength, enhance their elasticity and fatigue resistance, and thus ensure that the mattress can provide stable support during long-term use, firstly, the springs to be quenched are placed in batches on the support rods 204 inside the quenching shell 2, so that the springs are located inside the high-frequency induction heating coil 203. Then, the high-frequency power supply 202 is turned on, providing high-frequency alternating current to the high-frequency induction heating coil 203. According to the principle of electromagnetic induction, a high-frequency alternating magnetic field is generated around the high-frequency induction heating coil 203, causing an induced current to be generated inside the springs sleeved on the support rods 204. Then, due to the Joule heating effect, the temperature rises rapidly, thereby achieving rapid heating of the springs to reach the temperature required for quenching.

[0024] Once the coil spring is heated to the predetermined temperature, the drive mechanism is activated, and the stepper motor 3 starts working. Its output end drives the rotating shaft 102 to rotate through the transmission component 301, thereby causing the quenching shell 2 to rotate around the rotating shaft 102. The open end of the quenching shell 2 faces downward, and the heated coil spring is flipped over and poured into the cooling pool 1. The coolant in the cooling pool 1 quickly removes the heat from the coil spring, allowing it to cool down rapidly, thus completing the quenching process. After the temperature of the coil spring drops to room temperature, the workers can take the quenched coil spring out of the cooling pool 1 for further processing.

[0025] It should be noted that when placing the coil springs onto the support rod 204 in sequence, a spacer can be placed between every two coil springs to prevent adjacent coil springs from sticking together due to temperature rise.

[0026] The device is designed to allow for the simultaneous quenching of multiple coil springs. By equidistantly placing support rods 204 inside the quenching shell 2, a large number of coil springs can be placed in an orderly manner inside the high-frequency induction heating coil 203 for heating. When the coil springs need to be transferred to the cooling pool 1 for cooling and quenching after heating, the high-temperature coil springs can be quickly immersed in the coolant, reducing the time required for transfer and avoiding the problem of excessive temperature drop of the coil springs during the transfer process, which would affect the quenching quality. Furthermore, by completing the heating and quenching operations in one go, production efficiency is greatly improved, meeting the needs of large-scale coil spring production. Compared with the traditional method of quenching one spring at a time, processing time and labor costs are greatly reduced. For companies that mass-produce mattress coil springs, this can significantly increase production capacity and enhance market competitiveness.

[0027] High-frequency induction heating technology offers significant advantages over traditional open-flame heating. It enables springs to reach quenching temperature in an extremely short time because it directly generates induced current within the spring, resulting in high heat transfer efficiency. Unlike open-flame heating, it doesn't rely on gradual heat conduction for temperature increase, thus greatly shortening the quenching process time. Simultaneously, the significantly reduced heating time also lowers energy consumption, achieving high efficiency and energy saving. This not only reduces production costs for enterprises but also meets the requirements of modern manufacturing for energy conservation and emission reduction, creating better economic and environmental benefits for businesses.

[0028] Each high-frequency induction heating coil 203 is powered by an independent high-frequency power supply 202, which allows for precise control of the heating temperature of each spring. The parameters of the high-frequency power supply 202 can be flexibly adjusted according to the material, specifications, and quenching process requirements of different springs, ensuring that each spring is heated to the most suitable quenching temperature. This avoids the impact of uneven or excessively high or low temperatures on the quality of the springs. Springs that have undergone precise quenching have more stable and consistent properties such as hardness, strength, and elasticity, improving the overall quality of the springs and thus enhancing the quality and lifespan of the mattress, providing consumers with a better product experience.

[0029] Example 2:

[0030] Reference Figures 1-3 A spring production device is basically the same as that in Embodiment 1, but with the following additional feature: a limiting ring 205 is fixedly connected to the side of the support rod 204 away from the opening of the quenching shell 2, and the limiting ring 205 is located inside the high-frequency induction heating coil 203.

[0031] With the setting of the limiting ring 205, when the worker puts the coil spring on the support rod 204, the innermost coil spring can be positioned under the action of the limiting ring 205, thus.

[0032] Example 3:

[0033] Reference Figures 1-3 A spring production apparatus is basically the same as in Embodiment 2, but further: a groove 206 is provided on the side of the quenched shell 2 away from the opening end, a lifting plate 208 is slidably connected in the groove 206, a through groove 207 is opened in the groove 206 near the support rod 204 and communicates with the interior of the quenched shell 2, one end of the support rod 204 near the groove 206 passes through the through groove 207 and is fixedly connected to the lifting plate 208, and a lifting part for controlling the lifting of the lifting plate 208 is provided in the groove 206.

[0034] The lifting part is a lead screw 209, which is vertically rotatably connected in the groove 206 and threadedly connected to the lifting plate 208.

[0035] To ensure the coil spring is positioned relatively centrally within the high-frequency induction heating coil 203, after the coil spring is fitted onto the support rod 204, the lead screw 209 can be rotated. The lead screw 209, through its thread, causes the lifting plate 208 to move up and down. The lifting plate 208, in turn, moves the coil spring up and down within the high-frequency induction heating coil 203 via the support rod 204. This allows for adjustment of the coil spring's position within the high-frequency induction heating coil 203, ensuring it is positioned relatively centrally. This guarantees uniform heating of the coil spring, ensuring the quality of the quenching process. Furthermore, the device is applicable to coil springs of different diameters, effectively improving its versatility.

[0036] Example 4:

[0037] Reference Figures 1-3 A coil spring production device, basically the same as in Embodiment 3, but with a further improvement: a guide plate 103 is fixedly connected to the upper end of the cooling pool 1 near the opening of the quenching shell 2, and a protective shell 201 is fixedly connected to the bottom of the quenching shell 2. A high-frequency power supply 202 is installed inside the protective shell 201. When the coil spring needs to be heated to a specified temperature and transported into the cooling pool 1 for rapid cooling and quenching, the stepper motor 3 can be started to control the opening end of the quenching shell 2 to rotate downward by a certain angle. At this time, the support rod 204 will be in an inclined state, and then the support rod... The high-temperature coil spring on 204 will slide diagonally downward along the support rod 204. After falling onto the guide plate 103, it will enter the coolant in the cooling pool 1 under the guidance of the guide plate 103, thereby cooling and quenching the coil spring. By tilting the quenching shell 2 downward at a small angle, when the high-temperature coil spring enters the coolant, the large amount of water vapor generated can flow diagonally upward along the lower surface of the protective shell 201, thereby reducing the amount of water vapor entering the quenching shell 2 and reducing the problem of corrosion affecting the performance of the high-frequency induction heating coil 203 due to excessive water droplets on the surface.

[0038] Multiple openings are provided on the upper end of the side of the cooling pool 1 away from the guide plate 103. A suction fan 104 is fixedly installed at the opening of the cooling pool 1. With the setting of the suction fan 104, when the coil spring enters the coolant and generates a large amount of water vapor that floats upward, the suction fan 104 can suck the water vapor away from the opening end of the quenching shell 2, further reducing the amount of water vapor entering the quenching shell 2.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A round spring production device characterized by comprising: The utility model relates to a quenching device, including cooling pool (1), still including: Support (101) symmetry fixedly connected in the upper end both sides of cooling pool (1), Quenching shell (2) rotationally connected between two support (101) through pivot (102), Driving mechanism for driving quenching shell (2) to rotate is installed in one side of cooling pool (1), High frequency induction heating coil (203) equidistantly set in quenching shell (2), High frequency power supply (202) fixedly installed in the position of quenching shell (2) bottom near high frequency induction heating coil (203), and multiple high frequency induction heating coil (203) respectively with adjacent high frequency power supply (202) electrically connected, Supporting rod (204) equidistantly installed in quenching shell (2), and high frequency induction heating coil (203) is sleeved on the outside of adjacent supporting rod (204).

2. The round spring production device according to claim 1, wherein Driving mechanism includes stepper motor (3) and transmission assembly (301), and stepper motor (3) is fixedly installed in one side of cooling pool (1), and the output end of stepper motor (3) is connected with the same side pivot (102) through transmission assembly (301).

3. The round spring production device according to claim 1, wherein The side of supporting rod (204) away from the opening of quenching shell (2) is fixedly connected with limit ring (205), and limit ring (205) is located in high frequency induction heating coil (203).

4. The round spring production apparatus according to claim 1, wherein The side away from the opening of quenching shell (2) is provided with recess (206), and lifting plate (208) is slidably connected in recess (206), recess (206) is provided with through groove (207) near supporting rod (204) in recess (206) and is in communication with the inside of quenching shell (2), and the end of supporting rod (204) near recess (206) penetrates through through groove (207) and is fixedly connected with lifting plate (208), and recess (206) is provided with lifting portion for controlling the lifting of lifting plate (208).

5. The round spring production apparatus according to claim 4, wherein The lifting portion is screw rod (209), and screw rod (209) is vertically rotatably connected in recess (206) and is threadedly connected with lifting plate (208).

6. The round spring production apparatus according to claim 1, wherein The side of cooling pool (1) away from guide plate (103) is provided with multiple through holes, and suction fan (104) is fixedly installed in the through hole of cooling pool (1).

7. The round spring production apparatus according to claim 6, wherein ​

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