Online monomer turnover coiling annealing furnace device

Abstract

The utility model provides a full-function energy-saving online monomer turnover coiling annealing furnace device. The device comprises a transmission part, a ship-shaped base, a roll core assembly, a heat preservation shell assembly, a hot air circulation part, a feeding guide roller and a furnace shell brake. The transmission part is matched with a spline shaft assembled on the roll core through a spline housing to realize power transmission, and axial sliding is allowed through spline connection; the heat preservation shell assembly rotates around the roll core assembly along with increase of the roll diameter, and a heating component and a hot air circulation component are arranged in the heat preservation shell assembly. The feeding guide roller comprises two cylindrical friction rollers arranged oppositely, the surfaces of the cylindrical friction rollers are coated with wear-resistant and high-temperature-resistant silicon rubber layers, roller shafts are fixed to the outer side of the heat preservation shell, and oval small holes are formed in the two sides of a guide roller cavity to be matched with the width of a plate. Tension sensors are arranged at a plate inlet and a plate outlet, and the double sensors are linked to judge belt breakage and trigger clamping of the friction roller. According to the device, efficient power transmission, dynamic belt breakage response and high-temperature environment stability are achieved through integrated coiling and annealing design, and the device is suitable for a continuous plate machining scene.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing equipment, specifically to an online single-unit turnover coiling annealing furnace device. Background Technology

[0002] Currently, annealing of metal strip mainly employs bogie-type or continuous annealing furnaces. Bogie-type wire rod aging annealing furnaces typically include a bogie, furnace shell, lining, heating unit, and hot air circulation device. The hot air circulation device includes a fan unit and a guide hood. By sealing the air inlet to the outlet of the guide hood, all air is ensured to be heated, improving the efficiency of the thermal circulation system and maximizing the tempering performance of the wire. This type of annealing furnace can effectively heat-treat wire, but it is not suitable for continuous online processing of strip. For continuous annealing furnaces, by adjusting the eccentric guide rollers, the eccentric effect causes different forces at different positions along the width of the strip, thereby controlling the tension at different locations and straightening the strip. While this device solves the strip shape problem during annealing, it fails to address the issue of simultaneous annealing of certain special materials during rolling.

[0003] However, in actual production, certain special materials cannot be continuously rolled due to their inherent properties and require online heating and holding annealing during the rolling process. Existing rolling equipment typically separates the coiler from the annealing furnace. The coiler lacks a heating and holding function, leading to temperature fluctuations between rolling and annealing, affecting the consistency of material properties. Furthermore, existing equipment lacks an effective handling mechanism when strip breaks during rolling, easily causing production interruptions and material waste.

[0004] Therefore, there is an urgent need for a device that can achieve online coiling and annealing during the rolling process, which can not only ensure the temperature stability of the strip during the rolling process, but also effectively handle strip breakage, thereby improving production efficiency and material properties. Summary of the Invention

[0005] The present invention aims to solve the technical problems mentioned above. Therefore, this application proposes an online single-unit turnover coiling annealing furnace device.

[0006] The technical solution of this utility model is: an online single-unit turnover coiling annealing furnace device, comprising: a coiling annealing single-unit furnace, a transmission structure, and a feeding guide roller. The coiling annealing single-unit furnace includes an insulation shell, a hot air circulation component, and a heating component. The hot air circulation component and the heating component are disposed in the insulation shell. A strip is threaded through the feeding guide roller, and the strip is clamped when the strip breaks.

[0007] Furthermore, it includes a furnace shell brake, which employs hydraulic braking to achieve connection and separation from the insulation shell.

[0008] Furthermore, the brake pads are pushed by the hydraulic cylinder to contact the rotating parts of the insulation shell, generating friction to restrict the rotation of the insulation shell.

[0009] Furthermore, the feeding guide roller is two cylindrical friction rollers arranged opposite each other, and the feeding guide roller is housed in a guide roller cavity. Small holes are opened on both sides of the guide roller cavity, and the strip extends into the heat insulation shell through the small holes.

[0010] Furthermore, the cylindrical friction rollers rotate around their respective roller shafts, which are fixed outside the insulation shell.

[0011] Furthermore, the transmission component further includes a spline sleeve and a core, wherein the spline sleeve and the spline shaft of the core are connected by an axial sliding fit to achieve a transmission connection.

[0012] Furthermore, after the strip is wound up, the hydraulic cylinder releases the heat insulation shell, the spline sleeve of the transmission component disengages from the spline shaft of the core, and the power is disconnected.

[0013] Furthermore, the feed guide roller is configured to provide guidance during strip winding and to clamp the strip tail by relatively arranged cylindrical friction rollers when the strip breaks; a tension sensor is arranged on the strip path, and a strip break is determined when the tension is lower than a threshold.

[0014] Furthermore, the hot air circulation component includes a fan and a flow guide channel, which is distributed circumferentially along the top of the insulation shell.

[0015] The beneficial effects of this utility model are as follows: By designing the coiling annealing furnace as a single unit and placing it on a boat-shaped base, and fixing it with a hydraulic cylinder, the online heating and heat preservation annealing function of the coil is realized; the heating components in the heat preservation shell assembly ensure a constant temperature of the coil, while the hot air circulation components at the top ensure uniform heat distribution, improving energy utilization efficiency; the design of the additional guide rollers ensures that the tail of the coil can be quickly clamped when the coil breaks, and at the same time plays a guiding role during the coiling process, improving the stability of operation; the furnace shell brake can adjust the angle of the heat preservation shell assembly, so that the heat preservation shell assembly rotates with the coiling process, adapting to changes in the coil diameter of the coil, and enhancing the adaptability of the equipment; when coiling is completed, the entire single coiling annealing furnace can be rotated to the heat preservation annealing station, significantly improving the equipment utilization rate and achieving the technical effects of flexible operation, energy saving and high efficiency.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by means of the embodiments thereof. Attached Figure Description

[0017] Figure 1 A three-dimensional schematic diagram of the coiling annealing furnace structure;

[0018] Figure 2 This is a schematic diagram of the main structure of a coiling annealing furnace;

[0019] Figure 3 This is a schematic cross-sectional view of the longitudinal structure of the coiling annealing furnace;

[0020] Figure 4 A schematic cross-sectional view of the transverse structure of a coiling annealing furnace;

[0021] In the figure: 1-Strip; 2-Spline sleeve of transmission component; 3-Boat-shaped base; 4-Core; 5-Insulation shell; 6-Hot air circulation component; 7-Feeding guide roller; 8-Furnace shell brake; 9-Heating component; 10-Guide roller cavity; 11-Small hole; 12-Fan; 13-Guide channel. Detailed Implementation

[0022] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0023] Example 1:

[0024] This utility model describes an online single-unit turnover coiling annealing furnace device, including a coiling annealing single-unit furnace, a transmission structure, and a feeding guide roller 7. Figure 1 It records the overall three-dimensional diagram of the plan. Figure 2-4 From different perspectives Figure 1 The three-dimensional view further defines the structure. The annealing furnace includes an insulating shell 5, a hot air circulation component 6, and a heating component 9, which are housed within the insulating shell 5. The insulating shell 5 is made of high-temperature resistant material and covered with an insulation layer to maintain a stable furnace temperature. The insulating shell 5 is cylindrical in shape, with one end open for the entry and exit of the strip 1. The hot air circulation component 6 includes a fan 13 and a guide channel 14. The fan 13 is mounted on top of the insulating shell 5, and the guide channel 14 is distributed circumferentially along the top of the insulating shell 5. The fan 13 is driven by a motor and generates forced convection, causing hot air to circulate within the furnace. The guide channel 14 is made of high-temperature resistant alloy material and forms a ring structure to ensure that the hot air is evenly distributed inside the furnace cavity. The heating component 9 is a resistance wire heating element, evenly distributed on the inner wall of the insulating shell 5, which converts electrical energy into heat energy to provide a heat source for the annealing process. The power of heating element 9 can be adjusted according to actual needs to meet the annealing requirements of different strips 1. The function of the annealing furnace and its heating mechanism.

[0025] This online, single-unit annealing unit, designed with heating and insulation in mind, performs annealing directly during strip winding, eliminating internal stresses generated during rolling, improving the material's microstructure, and enhancing its plasticity, toughness, and mechanical properties. Constant temperature control ensures the stability of the annealing process, preventing uneven material performance due to temperature fluctuations. As an independent unit design, the annealing furnace can be quickly hoisted from the winding station to the insulation annealing station, adapting to multi-process production needs and reducing equipment footprint.

[0026] Heating component 9 (such as a resistance heating module or electromagnetic induction coil) directly radiates or inducts heat the strip coil to quickly reach the target annealing temperature (such as 600-800℃). Hot air circulation component 6 blows heat evenly onto the surface of the strip coil through a top fan and guide channel, eliminating local temperature differences and ensuring consistent annealing effect in all parts of the strip.

[0027] The power of the transmission structure comes from the cooperation of the spline sleeve 2 and the core 4. The spline sleeve 2 and the spline shaft of the core 4 are connected by axial sliding contact to achieve the transmission connection. The spline sleeve 2 is fixed on the output shaft of the drive motor, and the core 4 is rotatably connected to the insulation shell 5, with power transmission achieved through the spline connection. The core 4 is wound with strip 1. As the core 4 rotates continuously, the winding radius of the strip 4 continuously increases, and the spring force of the strip 1 also increases. The spline connection adopts a standard spline structure to ensure stable and reliable transmission, while allowing axial movement for easy loading and unloading.

[0028] The transmission structure also includes a furnace shell brake 8, which uses hydraulic braking to achieve connection and separation with the insulation shell 5. The furnace shell brake 8 uses a hydraulic cylinder to push the brake pads into contact with the rotating parts of the insulation shell 5, generating friction to limit the rotation of the insulation shell 5. The working pressure of the hydraulic cylinder can be adjusted within the range of 0.5-2MPa to adapt to different braking requirements. The brake pads are made of wear-resistant alloy material to ensure long-term stability and reliability. During the winding process, the brake is released, allowing the insulation shell (5) to rotate freely as the winding diameter increases; after winding is completed, the hydraulic cylinder pressurizes and pushes the brake pads to clamp and fix the position of the shell.

[0029] In this embodiment, after the strip 1 is wound up, the hydraulic cylinder releases the insulation shell 5, the spline sleeve 2 of the transmission component disengages from the spline shaft of the core 4, and the power is disconnected. This design allows the wound strip 1 to undergo annealing within the insulation shell 5 without requiring an additional transfer process, improving production efficiency and realizing integrated winding and annealing operations.

[0030] The feed guide roller 7 carries the strip 1, which clamps the strip 1 in case of breakage. The feed guide roller 7 consists of two opposing cylindrical friction rollers housed within a guide roller cavity 10. Small holes 11 are opened on both sides of the guide roller cavity 10, through which the strip 1 extends into the insulation shell 5. The cylindrical friction rollers rotate around their respective roller shafts, which are fixed outside the insulation shell 5. The surfaces of the cylindrical friction rollers are covered with wear-resistant and high-temperature resistant rubber material to increase friction with the strip 1, ensuring effective clamping of the strip 1 in case of breakage. A high-precision tension sensor is installed at the entrance of the strip 1 before entering the guide roller cavity 10 and at the exit of the core 4, forming dual detection points. The sensors communicate with the control system in real time, monitoring changes in strip tension and setting thresholds. A breakage signal is triggered when the tension drops below 20% of the normal value. After the tension sensor detects the breakage signal, the control system immediately performs the following actions: power is cut off to the transmission component 2, stopping the rotation of the core 4. Friction roller clamping: Two cylindrical friction rollers are pressed towards the center by an electromagnetic clutch or pneumatic drive, clamping the broken section of strip 1. Heating component 9 power reduction: Switches to heat preservation mode (power reduced to 30%) to avoid energy waste.

[0031] Example 2:

[0032] Example 1 describes the structure of an online single-unit turnover coiling and annealing furnace device. This example provides a detailed description of how the device achieves online coiling and annealing. The operation of the entire device includes four steps: the initial preparation stage, the coiling and annealing stage, the strip breakage detection and emergency handling stage, and the coiling completion and turnover stage.

[0033] The working process of the device will be described in detail below:

[0034] 1. Initial Preparation Phase

[0035] Strip threading and securing: The operator draws strip 1 from the mill exit, passes it through the guide groove of the feed roller 7, and secures it to the splined shaft of the core 4. Ensure the strip path is straight and free from twisting or offset.

[0036] Device positioning: Place the single-unit coiling annealing furnace on the boat-shaped base 3, and fix the heat-insulating shell 5 to the boat-shaped base 3 by hydraulic cylinder to ensure device stability.

[0037] System startup: Connect the power supply, start the transmission component 2, heating component 9 and hot air circulation component 6, preheat to the set temperature (e.g. 600-800℃), and prepare to enter the winding mode.

[0038] 2. Winding and Annealing Stage

[0039] Transmission and winding: The transmission component 2 drives the spline sleeve to rotate via a motor, which meshes with the spline shaft of the core assembly 4, causing the core assembly to rotate at high speed. The strip 1 is wound at a uniform speed under the traction of the core assembly to form a coil.

[0040] Heating and Insulation: The heating element 9, with its resistance heating modules or electromagnetic induction coils distributed circumferentially along the inner wall of the insulation shell 5, begins operation, directly radiating heat to the strip coil. The top fan of the hot air circulation element 6 starts, evenly distributing the heat generated by the heating element to the strip coil surface through the guide channel, ensuring uniform temperature across all parts of the strip. Temperature Control: A temperature sensor monitors the strip coil surface temperature in real time, and a PID controller adjusts the heating power and airflow to maintain a constant temperature (e.g., ±5℃ error).

[0041] Dynamic adjustment of roll diameter: As the strip is wound up, the roll diameter gradually increases, and the rotation angle of the insulation shell assembly 5 is controlled by the furnace shell brake 8.

[0042] Furnace shell brake 8: It is in a released state during the winding process, allowing the heat insulation shell assembly to rotate synchronously around the core assembly 4 as the roll diameter increases, thus avoiding excessive heat loss due to an excessively large opening in the shell.

[0043] 3. Belt breakage detection and emergency handling

[0044] Strip breakage detection: A tension sensor is installed at the strip inlet to monitor the strip tension in real time. If the tension suddenly drops below a set threshold, it is determined that the strip has broken.

[0045] Clamping action: After the belt break signal is triggered, the clamping mechanism (spring or hydraulic drive) of the feed guide roller 7 immediately closes to clamp the belt tail and prevent the belt from slipping or unwinding.

[0046] The power supply to the transmission component 2 is simultaneously cut off to stop winding; the heating component 9 switches to low power mode, and the hot air circulation component 6 reduces the wind speed to reduce energy consumption.

[0047] 4. Winding Completion and Turnover Stage

[0048] End of winding: When the strip is wound to the set length or thickness, the control system sends a completion signal. The transmission component 2 stops rotating, and the spline sleeve 2 and the spline shaft of the core assembly 4 are disengaged through the axial sliding mechanism, disconnecting the power transmission.

[0049] Insulation shell release: The hydraulic cylinder on the boat-shaped base 3 releases the insulation shell assembly 5, the furnace shell brake 8 is activated, and the shell position is fixed.

[0050] Transfer to the annealing station: Operators use hoisting equipment to lift the entire single coil annealing furnace (including the coil) from the ship-shaped base and transfer it to the heat preservation annealing station for subsequent processing.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An online single-unit turnover coiling annealing furnace device, comprising: The coiling annealing unit furnace, transmission structure, and feeding guide roller (7) are characterized in that the coiling annealing unit furnace includes an insulation shell (5), a hot air circulation component (6), and a heating component (9), wherein the hot air circulation component (6) and the heating component (9) are disposed inside the insulation shell (5); a strip (1) is threaded through the feeding guide roller (7), and the strip (1) is clamped when the strip (1) breaks.

2. The online single-unit turnover coiling annealing furnace device according to claim 1, characterized in that: The transmission structure further includes a furnace shell brake (8), which uses hydraulic braking to achieve connection and separation with the heat insulation shell (5).

3. The online single-unit turnover coiling annealing furnace device according to claim 2, characterized in that: The brake pads are pushed by the hydraulic cylinder to contact the rotating parts of the insulation shell (5), generating friction to limit the rotation of the insulation shell (5).

4. The online single-unit turnover coiling annealing furnace device according to claim 1, characterized in that: The feeding guide roller (7) consists of two cylindrical friction rollers arranged opposite each other. The feeding guide roller (7) is housed in a guide roller cavity (10). Small holes (11) are opened on both sides of the guide roller cavity. The strip (1) extends into the heat insulation shell (5) through the small holes (11).

5. The online single-unit turnover coiling annealing furnace device according to claim 4, characterized in that: The cylindrical friction rollers rotate around their respective roller shafts, which are fixed outside the insulation shell (5).

6. The online single-unit turnover coiling annealing furnace device according to claim 1, characterized in that: The transmission component further includes a spline sleeve (2) and a core (4), wherein the spline sleeve (2) and the spline shaft of the core (4) are connected by axial sliding fit.

7. The online single-unit turnover coiling annealing furnace device according to claim 3 or 6, characterized in that: After the strip (1) is wound up, the hydraulic cylinder releases the heat insulation shell (5), the spline sleeve (2) of the transmission component disengages from the spline shaft of the core (4), and the power supply is disconnected.

8. The online single-unit turnover coiling annealing furnace device according to claim 4, characterized in that: The feed guide roller (7) is configured to provide guidance when the strip (1) is wound up, and to clamp the tail of the strip by relatively arranged cylindrical friction rollers when the strip breaks; the tension sensor is arranged on the path of the strip (1), and the tension is judged to be broken when it is below the threshold.

9. The online single-unit turnover coiling annealing furnace device according to claim 1, characterized in that: The hot air circulation component (6) includes a fan (12) and a flow channel (13), which is distributed circumferentially along the top of the heat-insulating shell (5).

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