Rotary spray circulating cooling and quenching machine

Abstract

The present disclosure relates to the technical field of metal workpiece processing, and one embodiment of the present disclosure provides a rotary spray circulating cooling and quenching machine tool, which comprises a main frame, a sub-frame connected to one side of the main frame, a movable heating assembly arranged on the main frame, side frames fixed to two sides of the sub-frame, and a cooling assembly arranged between the side frames and the sub-frame. The movable heating assembly comprises a conveying groove arranged in the main frame, a group of conveying wheels horizontally rotatably connected to both ends of the conveying groove, a high-frequency induction heating coil arranged in the conveying groove, and the high-frequency induction heating coil located between the two groups of conveying wheels. Through the above technical solution, the technical problem that the workpiece naturally cools down during the transfer process, resulting in inconsistent cooling starting temperature and easy occurrence of uneven quenching hardness and incomplete martensite structure is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of metal workpiece processing, and specifically to a rotary spray circulating cooling quenching machine tool. Background Technology

[0002] In the field of metal workpiece heat treatment, quenching is a core process for improving the hardness, strength, and wear resistance of workpieces, and is widely used in the processing of key components such as shafts, gears, and molds. The quenching process requires heating the workpiece to its austenitizing temperature, followed by rapid cooling to achieve microstructural transformation. The cooling rate and uniformity directly determine the mechanical properties and deformation of the workpiece after quenching. With the increasing precision requirements of high-end manufacturing, the technical shortcomings of traditional quenching machine tools are becoming increasingly apparent: they cannot simultaneously complete the workpiece heating and rapid cooling processes, requiring separate equipment and steps, which severely restricts production efficiency and the stability of quenching quality. Traditional quenching processes require the workpiece to first be heated in a furnace until the target temperature is reached. Afterward, the workpiece is manually or mechanically transferred to cooling equipment (such as an oil cooling tank or spray system). During this transfer, the workpiece cools naturally, leading to inconsistent initial cooling temperatures. This can result in uneven quenching hardness and incomplete martensite structure, and some workpieces require secondary quenching, increasing production costs. This process cannot meet the demands of continuous production, especially for quenching small batches of parts, where the inefficiency is particularly pronounced. Therefore, the development of rotary spray circulating cooling quenching machine tools that integrate heating and rapid cooling functions has become an urgent need for the industry to improve quenching efficiency and workpiece quality. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a rotary spray circulation cooling quenching machine tool, which solves the technical problem in the prior art that the workpiece will naturally cool down during the transfer process, resulting in inconsistent cooling start temperature and easy occurrence of uneven quenching hardness and incomplete martensite structure.

[0004] According to one aspect, at least one embodiment of this disclosure provides a rotary spray circulating cooling quenching machine tool, comprising: A main frame and a sub-frame, wherein the sub-frame is connected to one side of the main frame; A movable heating assembly is mounted on the main frame. A pair of side frames and a cooling assembly, wherein the side frames are fixed on both sides of the sub-frame, and the cooling assembly is disposed between the side frames and the sub-frame; The mobile heating assembly includes a conveying trough, which is opened inside the main frame. Both ends of the conveying trough are horizontally rotatably connected to a set of conveying wheels. A high-frequency induction heating coil is installed inside the conveying trough, and the high-frequency induction heating coil is located between the two sets of conveying wheels.

[0005] As a further technical solution, each set of conveyor wheels is connected to a drive wheel at its front and rear ends, one of which is driven to rotate by electricity, and the drive wheels are connected to each other by belt drive.

[0006] According to another aspect, in at least one embodiment of the present invention, the cooling component includes a rotating tube, which is horizontally rotatably connected between the side frames. The rotating tube is driven to rotate by electricity, and an inner pipe is horizontally fixedly connected inside one side frame.

[0007] As a further technical solution, one end of the inner pipe is rotatably fitted inside the rotating pipe, the bottom of the inner pipe is provided with several water spray holes, the surface of the rotating pipe is provided with several elongated holes, and the surface of the rotating pipe is provided with several baffles.

[0008] As a further technical solution, the surface of the sub-frame is an inclined structural surface, and a groove is formed on the surface of the sub-frame. The groove is located directly below the rotating tube, and several drainage outlets are formed at the bottom of the groove.

[0009] As a further technical solution, the inner surface of the groove is provided with several anti-water accumulation protrusions, the bottom of the sub-frame is provided with a return flow collection cover, and a drainage pipe is provided on one side of the return flow collection cover.

[0010] As a further technical solution, a baffle plate is provided at one end of the surface of the subframe.

[0011] As a further technical solution, the surface of the conveyor wheel has an arc-shaped concave structure and a frosted anti-slip surface.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the mobile heating assembly solves the problem of post-heating transfer and cooling through synchronous conveying and induction heating design. The concave arc structure of the conveyor wheel conforms to the workpiece, and the frosted surface prevents slippage, ensuring stable workpiece transport. The high-frequency induction heating coil rapidly and uniformly heats the workpiece, completing the heating process during transport without the need for transfer, thus avoiding inconsistent cooling start temperatures caused by natural cooling. This structure ensures uniform workpiece heating, reduces the impact of temperature fluctuations on quenching quality, and enables continuous heating, improving the efficiency of batch workpiece processing. It also lays the foundation for subsequent uniform cooling and reduces the risk of hardness deviations caused by uneven heating. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Fig. 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Fig. 2 This is an isometric drawing of the present disclosure; Fig. 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Main frame; 2. Sub-frame; 3. Side frame; 4. Moving heating assembly; 4-1. Conveying trough; 4-2. Conveying wheel; 4-3. High-frequency induction heating coil; 4-4. Transmission wheel; 5. Cooling assembly; 5-1. Rotating tube; 5-2. Inner pipe; 5-3. Water spray hole; 5-4. Long hole; 5-5. Partition; 5-6. Groove; 5-7. Drain outlet; 5-8. Anti-water accumulation protrusion; 5-9. Backflow collection cover; 5-10. Drainage pipe; 6. Baffle plate. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0018] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figs. 1-3 As shown, it illustrates a rotary spray circulating cooling quenching machine tool according to an embodiment of the present disclosure, comprising: Main frame 1 and sub-frame 2, wherein the sub-frame 2 is connected to one side of the main frame 1; Movable heating component 4 is mounted on the main frame 1; A pair of side frames 3 and a cooling component 5, wherein the side frames 3 are fixed on both sides of the sub-frame 2, and the cooling component 5 is disposed between the side frames 3 and the sub-frame 2; The mobile heating component 4 includes a conveying trough 4-1, which is opened inside the main frame 1. Both ends of the conveying trough 4-1 are horizontally rotatably connected to a set of conveying wheels 4-2. A high-frequency induction heating coil 4-3 is installed inside the conveying trough 4-1, and the high-frequency induction heating coil 4-3 is located between the two sets of conveying wheels 4-2. Each set of conveying wheels 4-2 has a drive wheel 4-4 connected to its front and rear ends. One of the drive wheels 4-4 is driven to rotate by electricity, and the drive wheels 4-4 are connected to each other by belt drive.

[0022] In some examples, in order to achieve stable conveying and rapid and uniform heating of roller-type workpieces, provide a temperature basis that meets the process requirements for subsequent quenching treatment, and ensure quenching quality, a mobile heating component 4 is designed. This component includes a conveying groove 4-1 in the main frame 1, which is opened along the length of the main frame 1 to provide installation space for the conveying wheel 4-2 and the high-frequency induction heating coil 4-3. At the same time, it plays a limiting role in the conveying path of the roller, preventing the roller from deviating from the preset trajectory during the conveying process.

[0023] Two sets of conveying wheels 4-2, horizontally rotatably connected at both ends within the conveying trough 4-1, are symmetrically distributed. Each set of conveying wheels 4-2 is connected to the side wall of the conveying trough 4-1 via bearings. The top of each set of conveying wheels 4-2 is slightly higher than the bottom of the conveying trough 4-1, which can support both ends of the shaft roller and rotate synchronously with the shaft roller, reducing the frictional resistance between the shaft roller and the conveying wheels 4-2 and preventing scratches on the surface of the shaft roller due to friction. Each set of conveying wheels 4-2 has a drive wheel 4-4 connected to the front and rear ends of the conveying wheels 4-2. The drive wheel 4-4 is connected by belt drive, and one of the drive wheel 4-4 is fixedly connected to the output end of the electric drive component (such as a geared motor). After the motor starts, the drive wheel 4-4 and the belt drive all the conveying wheels 4-2 to rotate synchronously, thereby driving the shaft roller to move stably along the conveying trough 4-1, ensuring uniform shaft roller conveying speed and avoiding the impact of conveying speed fluctuations on heating uniformity.

[0024] The high-frequency induction heating coil 4-3 inside the conveying trough 4-1 is located between the two sets of conveying wheels 4-2 and is fixed to the inner wall of the conveying trough 4-1 by a bracket. The coil axis is parallel to the conveying direction of the roller, and the inner diameter of the coil is adapted to the outer diameter of the roller. When the roller passes through the coil, it can quickly heat the roller using the principle of electromagnetic induction, so that the roller can reach the quenching temperature required in a short time. The coil position design ensures that the roller can completely pass through the coil during the conveying process, so as to achieve uniform heating of the entire length of the roller and avoid local insufficient heating or overheating.

[0025] During operation, the electric drive transmission wheel 4-4 rotates, which in turn drives the conveyor wheel 4-2 to rotate synchronously via a belt. The shaft roller is placed on the conveyor wheel 4-2, and the conveyor wheel 4-2 drives the shaft roller to move towards the high-frequency induction heating coil 4-3. When the shaft roller passes through the coil, the coil is energized to rapidly induct heat the shaft roller. After heating is completed, the conveyor wheel 4-2 continues to drive the shaft roller to move towards the sub-frame 2 and into the cooling assembly 5. Synchronous conveying ensures stable movement of the shaft roller, and induction heating achieves rapid and uniform temperature rise. All components work together to meet the conveying and heating process requirements of the shaft roller before quenching, and are suitable for heating shaft rollers of different lengths and diameters.

[0026] like Figs. 1-3As shown in the figure, the cooling component 5 in this embodiment includes a rotating tube 5-1, which is horizontally rotatably connected between the side frames 3. The rotating tube 5-1 is driven to rotate by electricity. An inner pipe 5-2 is horizontally fixedly connected inside one side frame 3. One end of the inner pipe 5-2 is rotatably fitted inside the rotating tube 5-1. The bottom of the inner pipe 5-2 is provided with several water spray holes 5-3. The surface of the rotating tube 5-1 is provided with several elongated holes 5-4. The surface of the rotating tube 5-1 is provided with several partitions 5-5. The surface of the sub-frame 2 is an inclined structural surface. The surface of the sub-frame 2 is provided with a groove 5-6. The groove 5-6 is located directly below the rotating tube 5-1. The bottom of the groove 5-6 is provided with several drain outlets 5-7. The inner surface of the groove 5-6 is provided with several anti-water accumulation protrusions 5-8. The bottom of the sub-frame 2 is provided with a return flow collection cover 5-9. A drain pipe 5-10 is provided on one side of the return flow collection cover 5-9.

[0027] In some examples, to achieve brief heat preservation and rapid cooling of the roller after heating, while recycling the cooling water source, adapting to the heat preservation and rapid cooling in the quenching process, and ensuring the mechanical properties of the roller after quenching, a cooling component 5 is designed. This component includes side frames 3 vertically fixed on both sides of the sub-frame 2, providing stable support for the rotating tube 5-1; the rotating tube 5-1 is horizontally rotatably connected between the side frames 3, connected to the side frames 3 through bearings, and rotated by electric drive. Several partitions 5-5 on the surface of the rotating tube 5-1 are evenly distributed and extend along the axial direction of the rotating tube 5-1. When the roller is conveyed from the main frame 1 to the sub-frame 2, the rotating partitions 5-5 can gently block the roller, allowing the roller to stay briefly on the surface of the sub-frame 2, achieving heat preservation after heating, avoiding excessive temperature loss before the roller enters the cooling stage, and ensuring that the quenching temperature meets the process requirements.

[0028] One side frame 3 has a horizontally fixed inner pipe 5-2, one end of which is rotatably fitted into a rotating tube 5-1 via a rotating seal. This keeps the rotating tube 5-1 fixed while it rotates, preventing cooling water leakage. Several spray holes 5-3 at the bottom of the inner pipe 5-2 are evenly distributed along the length of the pipe, allowing cooling water to be sprayed evenly into the rotating tube 5-1. Several elongated holes 5-4 on the surface of the rotating tube 5-1 correspond to the spray holes 5-3 of the inner pipe 5-2, enabling the cooling water sprayed from the inner pipe 5-2 to be evenly sprayed onto the surface of the roller through the elongated holes 5-4, achieving rapid cooling of the roller. At the same time, the rotation of the rotating tube 5-1 can cause the cooling water to form a ring spray effect, ensuring uniform cooling in all areas of the roller surface and preventing deformation of the roller due to local differences in cooling speed.

[0029] The surface of the sub-frame 2 is an inclined structure, and the groove 5-6 on the surface is located directly below the rotating tube 5-1, which can guide the cooling water to flow into the groove 5-6. Several drain ports 5-7 at the bottom of the groove 5-6 are connected to the return collection cover 5-9 at the bottom of the sub-frame 2. After the cooling water flows through the shaft roller, it falls into the groove 5-6, flows along the anti-water accumulation protrusion 5-8 (to prevent the cooling water from accumulating locally in the groove 5-6) to the drain port 5-7, and then enters the return collection cover 5-9. The drain pipe 5-10 on one side of the return collection cover 5-9 can transport the collected cooling water to the external water treatment equipment, where it is treated and recycled, thus saving water resources.

[0030] During operation, the shaft roller is kept warm by the partition 5-5 of the rotating tube 5-1. Cooling water is sprayed onto the shaft roller through the inner pipe 5-2 via the spray hole 5-3 and the elongated hole 5-4 of the rotating tube 5-1. The cooled water flows into the groove 5-6 and enters the return collection hood 5-9 through the drain outlet 5-7. After the heat preservation and cooling are completed, the rotating tube 5-1 continues to rotate, and the partition 5-5 drives the shaft roller to move out along the inclined surface of the sub-frame 2. The rotation blocking achieves heat preservation, the annular spray ensures uniform cooling, and the return collection achieves water resource recycling. All components work together to complete the cooling process of shaft roller quenching, ensuring quenching quality and resource utilization.

[0031] For example, such as Fig. 1 As shown, a baffle plate 6 is provided at one end of the surface of the sub-frame 2.

[0032] In some examples, a baffle plate 6 is provided at one end of the surface of the sub-frame 2 to limit the movement of the shaft roller on the sub-frame 2, preventing the shaft roller from slipping off the end of the sub-frame 2 and causing damage due to excessive pushing by the partition 5-5 of the rotating tube 5-1 caused by the tilting of the sub-frame 2 surface. The baffle plate 6 is vertically fixed at the lower end of the tilted surface of the sub-frame 2, and its height is adapted to the diameter of the shaft roller, which can effectively block the shaft roller without excessively compressing the surface of the shaft roller.

[0033] For example, such as Fig. 1 As shown, the surface of the conveyor wheel 4-2 has an arc-shaped concave structure and a frosted anti-slip surface.

[0034] In some examples, the concave arc structure on the surface of the conveyor wheel 4-2 can precisely fit with the circular outer surface of the shaft roller to form a wrap-around support, preventing the shaft roller from shifting laterally during the conveying process. It is especially suitable for shaft rollers of different diameters, ensuring that the shaft roller always moves along the central axis of the conveying groove 4-1 and precisely passes through the high-frequency induction heating coil 4-3, ensuring uniform heating.

[0035] In practical use: The metal workpiece is placed on the conveyor wheel 4-2 of the conveyor trough 4-1 of the main frame 1. The electric drive transmission wheel 4-4 is started to rotate, and all conveyor wheels 4-2 rotate synchronously through the belt. The workpiece moves with the conveyor wheel 4-2 towards the high-frequency induction heating coil 4-3. When the workpiece passes through the coil, the high-frequency induction heating coil 4-3 is energized to quickly and evenly heat the workpiece. After heating is completed, the conveyor wheel 4-2 continues to drive the workpiece into the cooling area of ​​the sub-frame 2. The rotating tube 5-1 rotates under electric drive, and the surface baffle 5-5 gently blocks the workpiece, keeping it briefly warm. At the same time, the inner pipe 5-2 delivers cooling water into the rotating tube 5-1 through the water spray hole 5-3. The cooling water is evenly sprayed onto the surface of the workpiece through the long hole 5-4 of the rotating tube 5-1 to achieve rapid cooling. The cooling water flows to the groove 5-6 on the inclined surface of the sub-frame 2, is guided by the anti-water accumulation protrusion 5-8 to the drain outlet 5-7, enters the return collection hood 5-9, and is discharged and recycled through the drain pipe 5-10. After cooling is complete, the rotating tube 5-1 drives the partition 5-5 to push the workpiece along the inclined surface of the sub-frame 2, and finally it is limited by the blocking plate 6. The workpiece can be removed to complete the quenching process, and the heating and cooling are seamlessly connected throughout the process.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A rotary spray-type circulating cooling quenching machine tool, characterized in that, include: A main frame (1) and a sub-frame (2), wherein the sub-frame (2) is connected to one side of the main frame (1); A movable heating component (4) is mounted on the main frame (1); A pair of side frames (3) and a cooling component (5), wherein the side frames (3) are fixed on both sides of the sub-frame (2), and the cooling component (5) is disposed between the side frames (3) and the sub-frame (2); The mobile heating component (4) includes a conveying trough (4-1), which is opened in the main frame (1). Both ends of the conveying trough (4-1) are horizontally rotatably connected to a set of conveying wheels (4-2). A high-frequency induction heating coil (4-3) is installed in the conveying trough (4-1) and is located between the two sets of conveying wheels (4-2).

2. The rotary spray circulating cooling quenching machine tool according to claim 1, characterized in that, Each set of conveyor wheels (4-2) has a drive wheel (4-4) connected to its front and rear ends. One of the drive wheels (4-4) is driven to rotate by electricity, and the drive wheels (4-4) are connected to each other by belt drive.

3. The rotary spray circulating cooling quenching machine tool according to claim 1, characterized in that, The cooling component (5) includes a rotating tube (5-1), which is horizontally rotatably connected between the side frames (3). The rotating tube (5-1) is driven to rotate by electricity, and an inner pipe (5-2) is horizontally fixedly connected inside one side of the side frame (3).

4. The rotary spray circulating cooling quenching machine tool according to claim 3, characterized in that, One end of the inner pipe (5-2) is rotatably fitted inside the rotating pipe (5-1). The bottom of the inner pipe (5-2) is provided with several water spray holes (5-3). The surface of the rotating pipe (5-1) is provided with several elongated holes (5-4). The surface of the rotating pipe (5-1) is provided with several baffles (5-5).

5. A rotary spray circulating cooling quenching machine tool according to claim 4, characterized in that, The surface of the sub-frame (2) is an inclined structural surface. The surface of the sub-frame (2) is provided with a groove (5-6). The groove (5-6) is located directly below the rotating tube (5-1). Several drainage outlets (5-7) are provided at the bottom of the groove (5-6).

6. A rotary spray circulating cooling quenching machine tool according to claim 5, characterized in that, The inner surface of the groove (5-6) is provided with several anti-water accumulation protrusions (5-8), the bottom of the sub-frame (2) is provided with a return flow collection cover (5-9), and a drainage pipe (5-10) is provided on one side of the return flow collection cover (5-9).

7. A rotary spray circulating cooling quenching machine tool according to claim 1, characterized in that, A baffle plate (6) is provided at one end of the surface of the subframe (2).

8. A rotary spray circulating cooling quenching machine tool according to claim 1, characterized in that, The surface of the conveyor wheel (4-2) has an arc-shaped concave structure, and the surface of the conveyor wheel (4-2) has a frosted anti-slip structure.

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