A rolling mill forming cooling device

Abstract

This utility model discloses a roll forming cooling device, aiming to solve the problems of poor adaptability, non-reusability, uneven cooling effect, and high cost of traditional cooling methods. The device comprises two main parts: a cooling component and a clamping mechanism. The cooling component can be inserted along the roll axial direction and sleeved on the outside of the roll to achieve complete coverage and heat exchange of the roll body. One end of the clamping mechanism is connected to the cooling component, and the other end is detachably connected to the roll body for easy installation, removal, and replacement. The clamping mechanism is equipped with a clamping disc with multiple clamping blades distributed circumferentially. A drive mechanism drives these clamping blades to radially clamp or release the roll neck. This device has a compact structure, is easy to operate, and can be adapted for use without modifying the roll body. It has good versatility and reusability, effectively improving cooling efficiency and reducing operating costs. It is suitable for surface heat treatment and subsequent process control of rolls of various specifications.

Description

Technical Field

[0001] This utility model relates to the technical field of rolling mill production equipment, specifically to a rolling mill forming and cooling device. Background Technology

[0002] A rolling mill roll is a cylindrical or drum-shaped rotating workpiece and a key component in a rolling mill. It is used to extrude and deform metal materials, thinning, stretching, and shaping them during rotation. It is widely used in the processing and manufacturing of sheet, strip, and bar products in industries such as steel, non-ferrous metals, rubber, and plastics.

[0003] To maintain uniform surface hardness, the cooling process of rolls in related technologies needs to be controlled during the post-casting cooling stage to reduce unevenness in microstructure transformation and thermal stress. Existing technologies for controlling surface hardness uniformity through roll cooling typically employ internal cooling, achieved through a fixed spray system. This method is only applicable in specific environments or requires internal channel processing, cannot be reused, has low adaptability, and is costly. Summary of the Invention

[0004] This application provides a roll forming cooling device, which can improve the technical problems of non-reusability, low adaptability, and high internal processing cost in related technologies.

[0005] A roll forming cooling device includes a cooling component that can be inserted into one end along the axial direction of the roll and cover the roll, and a clamping mechanism that is connected to the cooling component at one end and detachably connected to the roll body at the other end; the clamping mechanism includes a clamping plate that can be sleeved with the roll, a plurality of clamping blades distributed along the circumference of the clamping plate, and a driving mechanism that drives each clamping blade to clamp or release the roll neck of the roll.

[0006] The technical solutions described above in this application embodiment have at least the following technical effects: by using an external spiral cooling mechanism, the roll surface can be rapidly cooled without the need for internal channel processing, thus eliminating thermal stress concentration and microstructure transformation differences caused by uneven cooling, extending the service life of the roll, and allowing it to be reused on other rolls of the same specifications after use. The operation is simple and the overall cost is effectively reduced.

[0007] In some embodiments, the clamping disc is provided with guide grooves, sliders and linkage pins at each clamping blade; wherein, the sliders on each clamping blade are embedded in the guide grooves provided on the upper end face of the base, and the linkage pins connect the iris sheet to the bottom drive mechanism of the clamping disc to maintain circumferential symmetry.

[0008] In some embodiments, the roll enters axially through the inlet opening of the clamping mechanism, and the drive mechanism at the bottom of the rotating clamping disc drives each clamping blade to move radially inward, clamping the far end of the roll, which is located on the side opposite to the inlet opening.

[0009] In some embodiments, the cooling assembly includes a sleeve that can be fitted onto the roll body. The sleeve is fixedly connected to the bottom of a clamping device. The sleeve has a spiral cooling channel that wraps around the outer wall of the roll body. The cooling channel tube is connected to the sleeve by welding. The sleeve is made of a thermally conductive material and directly contacts the roll body to form a heat conduction interface, transferring heat to the outer surface and the spiral channel tube. The cooling flow has an air inlet and an air outlet. The cooling channel is configured as a rectangular spiral channel with rounded corners inside.

[0010] In some embodiments, the drive mechanism is activated by a rotational operation, which drives the linkage pin at the bottom of the clamping plate to move; the linkage pin connects to the clamping blades and drives the sliders on each clamping blade to slide in the guide groove, wherein the sliders are radially constrained by the guide groove and move along a predetermined path; the synchronous transmission mechanism of the linkage pin ensures that all clamping blades move radially inward in a circumferentially symmetrical manner, clamping one end of the roll neck.

[0011] In some embodiments, the roll neck is radially clamped by clamping blades, and the roll body is enclosed in the ferrule; the cooling medium is introduced into the rectangular spiral flow channel on the outer wall of the ferrule from the cooling flow channel inlet, and forms an axial composite flow path around the roll body under the guidance of the rounded corner transition structure; wherein, the coaxiality of the roll and the ferrule is radially constrained by the clamping mechanism, and the cooling medium is discharged through the outlet to complete the heat exchange.

[0012] In some embodiments, the clamping device includes a limiting mechanism on the clamping plate. The limiting mechanism includes a limiting pin, a limiting plate, a limiting piece, and a spring. One end of the limiting pin is slidably connected inside the sleeve. The spring is disposed inside the sleeve, with one end of the spring engaged with the limiting pin and the other end abutting against the bottom of the sleeve. A limiting rod is connected to the bottom of the limiting pin, with the end of the limiting rod away from the limiting pin passing through the sleeve, and a limiting piece fitted on the bottom of the limiting rod. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the overall structure of the roll forming cooling device provided in the embodiments of this application. Figure 1 ; Figure 2 A schematic diagram of the overall structure of the roll forming cooling device provided in the embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the roll structure of the roll forming and cooling device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the clamping structure of the roll forming cooling device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the cooling pipes and ferrules of the roll forming cooling device provided in the embodiments of this application; Figure 6 For along Figure 2 Enlarged structural diagram of area A in the middle; Figure 7 A schematic diagram of the structure of area A of the roll forming cooling device provided in this application embodiment; The following are the labeling elements in the figure: 1. Roll; 2. Clamping device; 3. Cooling channel; 4. Sleeve; 11. Roll shaft; 12. Roll neck; 13. Roll body; 21. Limiting plate; 22. Limiting device; 221. Limiting pin; 222. Sleeve; 223. Limiting piece; 23. Linkage pin; 24. Clamping blade; 25. Guide groove; 26. Slider; 27. Clamping disc; 31. Cooling channel. Detailed Implementation

[0015] A rolling mill roll is a cylindrical or drum-shaped rotating workpiece and a key component in a rolling mill. It is used to extrude and deform metal materials, thinning, stretching, and shaping them during rotation. It is widely used in the processing and manufacturing of sheet, strip, and bar products in industries such as steel, non-ferrous metals, rubber, and plastics.

[0016] To maintain uniform surface hardness, the cooling process of rolls in related technologies needs to be controlled during the post-casting cooling stage to reduce unevenness in microstructure transformation and thermal stress. Existing technologies for controlling surface hardness uniformity through roll cooling typically employ internal cooling, achieved through a fixed spray system. This method is only applicable in specific environments or requires internal channel processing, cannot be reused, has low adaptability, and is costly.

[0017] The existing cooling methods are mostly integrated designs of the roll body or fixed equipment installations, which cannot be flexibly deployed and reused, making it difficult to meet the needs of modern manufacturing that require high efficiency, precision control, and versatility.

[0018] Based on this, in order to improve the problems of non-reusability, low adaptability and high internal processing costs in related technologies, the embodiments of this application provide the following solutions.

[0019] Please refer to the following: Figure 1 and Figure 7This application provides a roll forming cooling device. The device includes a cooling component that can be inserted into one end along the axial direction of the roll and cover the roll, and a clamping mechanism that is connected to the cooling component at one end and detachably connected to the roll body at the other end. The clamping mechanism includes a clamping disc that can be sleeved with the roll, a plurality of clamping blades distributed along the circumference of the clamping disc, and a driving mechanism that drives each clamping blade to clamp or release the roll neck of the roll.

[0020] As can be seen from the above, the roll forming cooling device provided in this application embodiment can be understood to be able to slide into the roll 1 from one end along the direction of the roll shaft 11 and be adapted to the outer diameter of the roll; after insertion, the cooling component surrounds and covers the roll body 13 to form an efficient heat conduction path.

[0021] It is understood that the clamping mechanism includes a clamping disc 27 that can be sleeved with the rolling roller. The clamping disc 27 is the core component of the clamping mechanism 2 and is arranged in a ring. The clamping blades 24 on the clamping disc 27 are designed to cooperate with the structure of one end of the rolling roller 1. Several guide grooves 25 are arranged around it to guide the radial movement of the clamping blades 24. It is usually an installation platform for connecting components such as the slider 26, the linkage pin 23, and the clamping blades 24.

[0022] In some examples, the drive source can be a manual handle, a mechanical cam, a motor, etc. The output transmits power to all clamping blades 24 via the linkage pin 23, causing them to move synchronously. The linkage pin 23 ensures that all clamping blades 24 move symmetrically and with equal amplitude around the center; during clamping, the drive mechanism is activated, and the linkage pin 23 drives each slider 26 to slide radially inward along the guide groove 25. The clamping blades 24 are gradually pressed against the roll neck 12, achieving stable clamping.

[0023] In some embodiments, the clamping disc is provided with guide grooves, sliders and linkage pins at each clamping blade; wherein, the sliders on each clamping blade are embedded in the guide grooves provided on the upper end face of the base, and the linkage pins connect the iris sheet to the bottom drive mechanism of the clamping disc to maintain circumferential symmetry.

[0024] It is understood that the guide groove 25 is installed on the surface of the clamping plate 27 or its base, and its function is to limit the movement of the slider 26 to a predetermined direction, generally radially guiding it towards the center of the roll 1. This ensures that the movement trajectory of the clamping blade 24 is accurate when clamping or releasing, and avoids eccentricity or jamming.

[0025] It can be understood that the slider 26, installed at the bottom of each clamping blade 24, is the motion intermediary structure between the clamping blade 24 and the clamping plate 27. It slides within the guide groove 25, and due to the geometric constraints of the groove, the clamping blade 24 can only move radially. The slider is typically made of wear-resistant, low-friction materials such as copper alloy or polytetrafluoroethylene (PTFE) to ensure long-term smooth operation.

[0026] It is understood that each clamping blade 24 is embedded in the guide groove 25 through the slider 26 at its bottom, achieving restricted sliding, and radially clamping or releasing the roll neck 12 as the drive mechanism moves.

[0027] It can be understood that the linkage pin 23 is the power transmission element of the drive mechanism. It synchronously transmits the rotation or pushing action of the bottom drive mechanism to all clamping blades 24. This ensures that each blade moves symmetrically at the same time and with the same amplitude, thereby achieving stable clamping or releasing. It is installed at the bottom of the clamping plate 27 and connects the iris plate, i.e., the clamping blade 24, to the drive device.

[0028] In some examples, the guide groove 25 and slider 26 provided on the clamping plate 27, together with the linkage pin 23, drive the clamping blade 24 to form a controllable iris clamping mechanism, so that the clamping process of the roll 1 is symmetrical, precise and stable, and realizes the high coaxial installation and quick assembly and disassembly of the cooling device and the roll.

[0029] In some embodiments, the roll enters axially through the inlet opening of the clamping mechanism, and the drive mechanism at the bottom of the rotating clamping disc drives each clamping blade to move radially inward, clamping the far end of the roll, which is located on the side opposite to the inlet opening.

[0030] It can be understood that the inlet opening refers to the open section at the front end of the clamping mechanism 2 structure, allowing the roll 1 to be inserted along its axial direction. Its size design needs to be larger than the maximum diameter of the roll neck 12 of the roll 1, and to keep the central axis aligned with the roll axis.

[0031] It can be understood that the far end 12 of the clamping roll refers to the end of the roll 1 closest to the exit after it is inserted from the inlet end, which is usually a roll neck 12 segment. Each clamping blade 24 clamps this far end after being driven to prevent axial or radial displacement of the roll during the cooling process.

[0032] In some embodiments, the cooling assembly includes a sleeve that can be fitted onto the roll body. The sleeve is fixedly connected to the bottom of the clamping device. The sleeve has a spiral cooling channel that wraps around the outer wall of the roll body. The cooling channel tube is connected to the sleeve by welding. The sleeve is made of a thermally conductive material and directly contacts the roll body to form a heat conduction interface, transferring heat to the outer surface and the spiral channel tube. The cooling channel has an air inlet and an air outlet. The cooling channel is configured as a rectangular spiral channel with rounded corners inside.

[0033] It is understandable that the ferrule is a hollow cylindrical structure that can tightly wrap around the outer circumference of the roll body 13 to form surface contact. The material must be a metal with good thermal conductivity, and it is fixedly connected to the bottom of the clamping device 2 to ensure that the ferrule does not slip or shift after the roll is clamped.

[0034] It is understood that the cooling channel 31 is a spirally distributed fluid channel on the outer surface of the sleeve 4, used to introduce cooling media such as nitrogen, coolant, and cooling oil for heat exchange. It has a rectangular cross-section with rounded corners inside, the purpose of which is to reduce fluid eddies and pressure drops at bends, while reducing flow resistance and improving fluid uniformity and heat exchange efficiency.

[0035] It is understandable that the spiral coating refers to the cooling channel 31 being arranged along the axial direction of the ferrule 4 in a spiral path, surrounding the entire roller body 13. The spiral shape can increase the length of the cooling path and the coverage area, ensuring dual heat exchange of the fluid in both the axial and circumferential directions while avoiding cooling dead zones.

[0036] It is understandable that the thermally conductive material used in the ferrule 4 needs to be a material with a high thermal conductivity, such as copper and its alloys, aluminum alloys, graphite-reinforced metal composites, etc. The purpose is to quickly guide the heat from the surface of the roll body 13 to the external cooling channel 31.

[0037] It is understandable that the thermal conductivity interface refers to the contact interface between the inner wall of the ferrule 4 and the roll body 13, which requires a tight fit without gaps. Thermal conductive silicone grease or flexible gaskets can be used to enhance the thermal conductivity contact.

[0038] It can be understood that the rectangular spiral flow channel refers to the cross-sectional shape of the cooling flow channel 31 being rectangular, rather than the traditional circular or elliptical cross-section. This results in a larger heat exchange surface area, extending the flow path and residence time of the cooling medium within the flow channel, and forming a cooling coverage surface that covers the entire roller body 13.

[0039] It is understood that the rounded corner transition inside the flow channel refers to the use of rounded transitions rather than sharp angles at the inner edges and corners of the cooling flow channel 31. This reduces turbulence, eddies, or local pressure loss of the cooling medium during flow; reduces stagnation zones or dead zones at corners, improving heat transfer uniformity; reduces system operating resistance and energy consumption; and helps improve the mechanical strength and durability of the structure after welding or forming. A radius of 2-5 mm is typically used as a structural design parameter for rounded corner transitions.

[0040] In some embodiments, the drive mechanism is activated by a rotational operation, which drives the linkage pin at the bottom of the clamping plate to move; the linkage pin connects to the clamping blades and drives the sliders on each clamping blade to slide in the guide groove, wherein the sliders are radially constrained by the guide groove and move along a predetermined path; the synchronous transmission mechanism of the linkage pin ensures that all clamping blades move radially inward in a circumferentially symmetrical manner, clamping one end of the roll neck.

[0041] It is understood that the manual or drive system rotates the drive mechanism, which drives the linkage pin 23 connected to the bottom of the clamping plate 27 to rotate or move; the linkage pin 23 drives the slider 26 at the rear end of all the clamping blades 24; the slider 26 slides in a restricted manner in the guide groove 25 and can only move along the radial path. All clamping blades 24 retract radially inward at the same time, and their front ends press against the roll neck 12 of the roll 1. In some embodiments, the roll neck is radially clamped by clamping blades, and the roll body is enclosed in the ferrule; the cooling medium is introduced into the rectangular spiral flow channel on the outer wall of the ferrule from the cooling flow channel inlet, and forms an axial composite flow path around the roll body under the guidance of the rounded corner transition structure; wherein, the coaxiality of the roll and the ferrule is radially constrained by the clamping mechanism, and the cooling medium is discharged through the outlet to complete the heat exchange.

[0042] It is understandable that the roll body 13 is stably attached to the inside of the ferrule 4, forming a good thermal interface; The cooling medium is injected through the air inlet of the cooling channel 31 and flows spirally along the rectangular spiral channel on the outer wall of the ferrule; The fluid maintains a steady flow velocity in the rounded transition structure, flows in a combined axial and circumferential direction, and exchanges heat around the roll. The heat-absorbing medium is discharged through the air outlet, completing the cooling cycle.

[0043] In some embodiments, the clamping device includes a limiting mechanism on the clamping plate. The limiting mechanism includes a limiting pin, a limiting plate, a limiting piece, and a spring. One end of the limiting pin is slidably connected inside the sleeve. The spring is disposed inside the sleeve, with one end of the spring engaged with the limiting pin and the other end abutting against the bottom of the sleeve. A limiting rod is connected to the bottom of the limiting pin, with the end of the limiting rod away from the limiting pin passing through the sleeve, and a limiting piece fitted on the bottom of the limiting rod.

[0044] Understandably, when the operator wants to lock the clamped state, they need to press the limit pin 222. The limit pin extends axially and inserts into the positioning hole or notch of the drive mechanism's rotating handle. At this time, the limit pin 222 is released, and it engages the rotating handle under the action of spring force to prevent the rotating handle from backing up due to its own weight or vibration after operation, thus avoiding the risk of the roll coming loose. When it is necessary to release the roll, the limit pin 222 is pressed, and the limit pin 222 retracts axially, disengaging from the rotating handle. At this time, the rotating handle can rotate freely, realizing the release action of the clamped blade. This achieves the purpose of unlocking the clamping mechanism.

[0045] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A roll forming and cooling device, characterized in that: It includes a cooling assembly that can be inserted into one end along the axial direction of the roll and enclose the roll, and a clamping mechanism that is connected to the cooling assembly at one end and detachably connected to the roll body at the other end; the clamping mechanism includes a clamping disc that can be sleeved with the roll, a plurality of clamping blades distributed along the circumference of the clamping disc, and a driving mechanism that drives the clamping blades to clamp or release the roll neck of the roll.

2. The roll forming and cooling device according to claim 1, characterized in that: The clamping disc is provided with guide grooves, sliders and linkage pins at each clamping blade; wherein, the sliders on each clamping blade are embedded in the guide grooves provided on the upper end face of the base, and the linkage pins connect the iris sheet to the bottom drive mechanism of the clamping disc to maintain circumferential symmetry.

3. The roll forming and cooling device according to claim 2, characterized in that: The roll enters axially through the inlet opening of the clamping mechanism. The drive mechanism at the bottom of the clamping disc is rotated to move the clamping blades radially inward, clamping the far end of the roll, which is located on the side opposite to the inlet opening.

4. The roll forming and cooling device according to claim 1, 2, or 3, characterized in that: The cooling assembly includes a sleeve that can be fitted onto the roller body. The sleeve is fixedly connected to the bottom of the clamping device. The sleeve has a spiral cooling channel that wraps around the outer wall of the roller body. The cooling channel tube is connected to the sleeve by welding. The sleeve is made of a thermally conductive material and forms a heat conduction interface with the roller body. The cooling flow has an air inlet and an air outlet. The cooling channel is set as a rectangular spiral channel with rounded corners inside.

5. The roll forming cooling device according to claim 2 or 3, characterized in that: The drive mechanism is activated by rotation, which drives the linkage pin to move. The linkage pin connects to the clamping blade and drives the slider on the clamping blade to slide in the guide groove. The movement of the slider is radially constrained by the guide groove and moves along a predetermined path. The synchronous transmission mechanism of the linkage pin ensures that the clamping blade moves radially symmetrically around the circumference and clamps one end of the roll neck.

6. The roll forming and cooling device according to claim 4, characterized in that: The roller neck is radially clamped by the clamping blades, and the roller body is enclosed within the ferrule; the cooling medium is introduced into the rectangular spiral channel on the outer wall of the ferrule from the air inlet; wherein, the clamping mechanism radially constrains the coaxiality of the roller and the ferrule.

7. The roll forming and cooling device according to claim 3, characterized in that: The clamping disc includes a limiting mechanism, which includes a limiting pin, a limiting plate, a limiting piece, and a spring. One end of the limiting pin is slidably connected to the sleeve. The spring is disposed inside the sleeve, with one end engaged with the limiting pin and the other end abutting against the bottom of the sleeve. A limiting rod is connected to the bottom of the limiting pin, with one end of the limiting rod away from the limiting pin passing through the sleeve, and a limiting piece sleeved on the bottom of the limiting rod.

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