Surface heat treatment device for corrugation roller production

Abstract

The utility model discloses a surface heat treatment device for corrugated roller production, including coaxial arrangement's inductive heating subassembly and cooling subassembly, the heating ring main part of inductive heating subassembly is by two coaxial, same diameter and inner ring surface is located the same circumference open ring annular body interval combination and is formed, and two annular body open ring place electricity is connected and is connected electrode connecting rod respectively, the hollow upper ring body of cooling subassembly sets up the inclined inner ring surface, and the inner ring surface array has first water spray hole and hole axis is perpendicular to the inner ring surface. The structural design of heating ring main part ensures its with corrugated roller surface distance everywhere is consistent, improves heating homogeneity, and the first water spray hole of upper ring body is inclined setting, has avoided the short circuit, magnetic field disorder problem that horizontal water spray is easy to splash to heating ring to initiate, has overcome the defect that vertical water spray covers insufficiently. Both coaxial synergistic effect, effectively promote the homogeneity of corrugated roller heating and cooling, guarantee its hardness is consistent, reduces equipment failure and maintenance frequency, improves production efficiency and product pass rate.

Description

Technical Field

[0001] This utility model relates to the technical field of surface heat treatment equipment, and in particular to a surface heat treatment equipment for corrugated roll production. Background Technology

[0002] In the surface heat treatment of corrugated rolls, the uniformity of induction heating and the rationality of cooling directly determine the hardness, wear resistance, and service life of the teeth. Existing induction heating coils mostly use concave-convex surfaces, which cannot be well adapted to the tooth shape of the corrugated roll. This results in uneven distances between the heating coil and the tooth tip and root, significant differences in magnetic field distribution, causing eddy current disturbances and uneven heating in the tooth area, increasing product defect rates and rework costs. The accompanying cooling water rings have design flaws in their spray nozzles: horizontal sprays easily splash onto the upper induction heating coil, causing short circuits, insulation damage, and magnetic field disturbances; vertical sprays result in insufficient cooling coverage, leading to large differences in cooling rates between the upper and lower parts of the corrugated roll, further exacerbating uneven hardness. Although the industry has attempted to add shielding components to reduce water splashing, these easily interfere with the cooling water flow, negatively impacting the cooling effect. They also increase equipment maintenance frequency, reduce production efficiency, and can even cause heat treatment interruptions due to heating coil malfunctions, resulting in the scrapping of the corrugated roll.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a surface heat treatment device for corrugated roll production, which aims to solve the technical problems in the prior art where the concave-convex induction heating coil heats the corrugated roll unevenly, and the water droplets from the cooling water ring easily splash onto the induction heating coil, affecting the processing quality and damaging the induction heating coil.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A surface heat treatment apparatus for corrugated roll production, comprising an induction heating component and a cooling component, wherein the induction heating component and the cooling component are coaxially arranged;

[0007] The induction heating assembly includes a heating coil body and two electrode connecting rods. The heating coil body is formed by two open-ring bodies spaced apart. The two ring bodies are electrically connected at their open rings and are respectively electrically connected to the two electrode connecting rods. The two ring bodies are coaxially arranged and have the same diameter. The inner ring surfaces of the ring bodies are located on the same circumference to ensure that the distance between the inner ring surface of the heating coil body and the workpiece surface is the same everywhere.

[0008] The cooling assembly includes a hollow upper ring body. At least two first copper pipe joints are connected to the outer side of the upper ring body. The inner diameter of the upper ring body gradually increases from top to bottom along its axis, making its inner ring surface inclined. A plurality of first water spray holes are arrayed on the inner ring surface of the upper ring body, and the axis of the first water spray holes is perpendicular to the inner ring surface of the upper ring body.

[0009] The surface heat treatment device for corrugated roll production, wherein the induction heating component comprises two annular bodies and two electrode connecting rods, all of which are tubular structures. The two annular bodies are electrically connected by a conductive metal plate, and the conductive metal plate seals the inner tube ends of the two annular bodies. The two electrode connecting rods are respectively connected to the ends of the two annular bodies.

[0010] The surface heat treatment device for corrugated roll production includes an induction heating component that further comprises two mounting brackets, which are fixedly connected to two electrode rods respectively. The mounting brackets are provided with through holes, through which the inner tubes of the electrode rods are connected to an external circulating water supply device. An insulating partition is provided between the two mounting brackets, and the insulating partition extends to the opening of the two annular bodies.

[0011] The surface heat treatment device for corrugated roll production, wherein the induction heating component further includes a plurality of insulating connectors and at least two fourth mounting plates, the plurality of insulating connectors being evenly distributed along the outer side of the heating coil body and used to fix and connect two annular bodies; at least two fourth mounting plates are symmetrically arranged on the outer side of the heating coil body, and the fourth mounting plates are provided with connecting grooves for accommodating connecting screws.

[0012] The surface heat treatment device for corrugated roll production includes two circular tubes connected to the outer sides of the two circular rings. The circular tubes are connected to the inner tubes of the circular rings, and the ends of the circular tubes are provided with quick connectors for connecting to external circulating water supply equipment.

[0013] The surface heat treatment device for corrugated roll production includes an upper ring body with an open-ring structure, both ends of which are sealed. At least two first copper pipe joints are symmetrically distributed along the line connecting the open ring of the upper ring body to the center of the circle. Two first mounting plates are provided on the outer side of the upper ring body, and the two first mounting plates are symmetrically arranged along the line connecting the open ring of the upper ring body to the center of the circle. The first mounting plates are provided with first screw holes.

[0014] The surface heat treatment device for corrugated roll production includes at least two baffles inside the upper ring of the cooling assembly, each baffle corresponding to a first copper pipe joint, and water passage holes are provided on the baffles.

[0015] The surface heat treatment device for corrugated roll production includes a cooling assembly that further includes a lower ring body coaxially arranged with the upper ring body. The lower ring body is a tubular structure with a square cross-section. The outer diameter of the lower ring body is equal to the outer diameter of the upper ring body, and the inner diameter of the lower ring body is equal to the minimum inner diameter of the upper ring body.

[0016] The surface heat treatment device for corrugated roll production includes a lower ring body with an open-ring structure and both ends sealed. The lower ring body has two second mounting plates symmetrically arranged around the line connecting its open ring and the center. Each second mounting plate has a second screw hole. The upper and lower ring bodies are fixedly connected by screws passing through the first and second screw holes. Two third mounting plates are also provided on the outer side of the lower ring body, corresponding to the two second mounting plates. Each third mounting plate has a third screw hole for fixing the cooling assembly to external equipment using screws.

[0017] The surface heat treatment device for corrugated roll production includes a lower ring body whose inner ring surface and its upper and lower end faces are both perpendicularly arranged. The inner ring surface of the lower ring body is arrayed with a plurality of second water spray holes, the axis of which is perpendicular to the inner ring surface of the lower ring body so that the water sprayed is a transverse water flow. At least two second copper pipe joints are connected to the outer side of the lower ring body. The second copper pipe joints are used to connect to external water supply equipment, and the at least two second copper pipe joints are symmetrically distributed along the line connecting the opening of the lower ring body and the center.

[0018] Beneficial effects:

[0019] This invention provides a surface heat treatment device for corrugated roll production, comprising a coaxially arranged induction heating component and a cooling component. The heating coil of the induction heating component is composed of two coaxial, open-ring bodies of the same diameter with their inner ring surfaces located on the same circumference, spaced apart. The two ring bodies are electrically connected at their open rings and respectively connected to electrode connecting rods. The hollow upper ring of the cooling component has an inner ring surface with its inner diameter gradually increasing from top to bottom, forming an inclined inner ring surface. At least two first copper pipe joints are connected to its outer side. The inner ring surface has an array of first water spray holes with the hole axes perpendicular to the inner ring surface. This surface heat treatment device for corrugated roll production ensures that the distance between the heating coil body and the surface of the corrugated roll is consistent throughout through the structural design of the heating coil body, solving the problem of uneven heating caused by poor adaptability of traditional concave-convex heating coils. The inclined inner ring surface and corresponding water spray hole design of the cooling component not only avoid the short circuit and magnetic field disturbance problems caused by splashing water onto the heating coil in traditional horizontal water spraying, but also overcome the defect of insufficient coverage by vertical water spraying, achieving full coverage of the corrugated roll surface by the cooling water flow. The coaxial synergistic effect of the two effectively improves the uniformity of heating and cooling of the corrugated roll teeth, ensures consistent hardness, reduces equipment failure and maintenance frequency, and improves production efficiency and product qualification rate. Attached Figure Description

[0020] Figure 1A three-dimensional structural diagram of the surface heat treatment device provided by this utility model;

[0021] Figure 2 A three-dimensional structural diagram of the induction heating component provided by this utility model;

[0022] Figure 3 A top view of the induction heating assembly provided by this utility model;

[0023] Figure 4 A three-dimensional structural diagram of the cooling component provided by this utility model;

[0024] Figure 5 An exploded view of the cooling assembly provided by this utility model;

[0025] Figure 6 A cross-sectional structural diagram of the cooling component provided by this utility model;

[0026] Figure 7 Provided by this utility model Figure 6 A schematic diagram of the partial structure of A in the middle.

[0027] Figure label:

[0028] 1—Induction heating component; 11—Heating coil body; 12—Electrode connecting rod

[0029] 13—Conductive metal plate 14—Mounting bracket 15—Insulating partition

[0030] 16—Insulating connector; 17—Fourth mounting plate; 18—Round tube

[0031] 19—Quick connector; 141—Through hole; 171—Connecting groove

[0032] 2—Cooling assembly 21—Upper ring body 22—First copper pipe connector

[0033] 23—First mounting plate; 24—Water baffle; 25—Lower ring body

[0034] 26—Second mounting plate; 27—Third mounting plate; 28—Second copper pipe connector

[0035] 211—First water spray hole; 231—First screw hole; 241—Water passage hole

[0036] 251—Second water spray hole; 261—Second screw hole; 271—Third screw hole. Detailed Implementation

[0037] This utility model provides a surface heat treatment device for corrugated roll production. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0038] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0039] Please see Figure 1 As shown, this utility model provides a surface heat treatment device for corrugated roll production, which includes an induction heating component 1 and a cooling component 2, wherein the induction heating component 1 and the cooling component 2 are coaxially arranged.

[0040] The induction heating assembly 1 includes a heating coil body 11 and two electrode connecting rods 12. The heating coil body 11 is formed by two open-ringed circular bodies arranged at intervals. The two circular bodies are electrically connected at their open rings and are respectively electrically connected to the two electrode connecting rods 12. The two circular bodies are coaxially arranged and have the same diameter. The inner ring surfaces of the circular bodies are located on the same circumference to ensure that the distance between the inner ring surface of the heating coil body 11 and the workpiece surface is the same everywhere.

[0041] The cooling assembly 2 includes a hollow upper ring body 21. At least two first copper pipe joints 22 are connected to the outer side of the upper ring body 21. The inner diameter of the upper ring body 21 gradually increases from top to bottom along its axis, so that its inner ring surface is inclined. A plurality of first water spray holes 211 are arrayed on the inner ring surface of the upper ring body 21. The axis of the first water spray holes 211 is perpendicular to the inner ring surface of the upper ring body 21.

[0042] During surface heat treatment of the corrugated roll, the induction heating component 1 is suspended outside the corrugated roll, and the two electrode connecting rods 12 are respectively connected to the positive and negative terminals of the power supply, energizing the heating coil body 11. After energization, the two coaxial rings with the same diameter form a closed current loop. Because the inner ring surfaces are flush and the distance from the corrugated roll surface is consistent throughout, the current is evenly distributed on the two rings, thereby generating a uniform alternating magnetic field. When the corrugated roll is placed in this uniform magnetic field, eddy currents of uniform density are induced at the tooth tips, tooth roots, and tooth surfaces. The Joule heating effect of the eddy currents achieves overall heating of the corrugated roll surface. This induction heating component 1 effectively avoids the problems of local overheating or underheating caused by traditional concave-convex ring surfaces, making the hardness distribution of the corrugated roll teeth uniform, significantly improving its wear resistance and service life; at the same time, uniform heating reduces heat treatment defects, improves the production qualification rate of corrugated rolls, and reduces rework costs; and it eliminates the need for repeated adjustment of heating parameters, simplifying the operation process and improving the production efficiency of corrugated roll heat treatment.

[0043] The cooling assembly 2, through the engagement of the inclined inner ring surface of the upper ring body 21 with the first water spray hole 211 perpendicular to the inner ring surface, sprays cooling water in an inclined downward direction, fundamentally solving the problems of horizontal water spraying and uneven cooling in traditional cooling water rings. On the one hand, it effectively prevents cooling water from splashing onto the upper induction heating ring, avoiding short circuits and insulation damage caused by water, thus ensuring the stable operation of the heating process. On the other hand, the inclined water flow can evenly cover the surface of the corrugated roller, avoiding differences in cooling speed between the upper and lower parts, ensuring the formation of a uniform martensitic structure in the teeth, improving hardness consistency, and reducing the risk of product scrap. At the same time, no additional shielding components are needed, simplifying the equipment structure, reducing the frequency of heating ring replacement and equipment maintenance, lowering maintenance costs, and improving production continuity and efficiency. Furthermore, the design of the first copper pipe connector 22 facilitates stable connection to the water supply equipment, and the overall structure is compact, highly adaptable, and has good practicality and promotional value.

[0044] The surface heat treatment device for corrugated roll production ensures a consistent distance between the heating coil body 11 and the corrugated roll surface through its structural design, solving the problem of uneven heating caused by poor adaptability of traditional concave-convex heating coils. The inclined inner ring surface and corresponding water spray hole design of the cooling component 2 avoid the short circuit and magnetic field disturbance problems caused by splashing water onto the heating coil, which is common with traditional horizontal water spraying, and overcomes the defect of insufficient coverage by vertical water spraying, achieving full coverage of the corrugated roll surface by cooling water. The coaxial synergistic effect of the two effectively improves the uniformity of heating and cooling of the corrugated roll teeth, ensures consistent hardness, reduces equipment failure and maintenance frequency, and improves production efficiency and product qualification rate.

[0045] In this embodiment, the induction heating component 1 and the cooling component 2 are respectively installed at designated clamping positions on the external equipment. The coaxiality error between the induction heating component 1 and the cooling component 2 does not exceed 0.1mm. They are assembled to the designated clamping positions on the external equipment through the screw holes of the fourth mounting plate 17 and the third mounting plate 27 to achieve concentric positioning. The axial distance between the two is 30-50mm, and the actual distance can be adjusted according to the speed of the corrugated roller to ensure immediate cooling after heating. The two annular bodies and the two electrode connecting rods 12 are all made of copper tubing. The inner diameter of the annular body is larger than the outer diameter of the corrugated roller to be processed. The opening angle of the annular body does not exceed 10°. The opening of the two annular bodies is electrically connected by welding with brass plates. The two electrode connecting rods 12 are also fixed to both ends of the annular bodies by welding. The connection method between the electrode connecting rods 12 and the power supply is existing technology and will not be described in detail here. The upper ring body 21 is made of copper tubing. The cross-section of the upper ring body 21 is a trapezoidal tubular structure. The first copper tube connector 22 is fixed to the outside of the upper ring body 21 by welding and is connected to the upper ring body 21. The upper and lower end faces of the upper ring body 21 are parallel horizontal planes. The outer ring surface of the upper ring body 21 is perpendicular to the upper and lower end faces, respectively. The inclination angle of the inner ring surface of the upper ring body 21 relative to the outer ring surface is 15°, that is, the axis of the first water spray hole 211 is inclined downwards at 15° relative to the upper end face. There are four first copper pipe joints 22, which are equidistantly distributed on the outside of the upper ring body 21 and are respectively connected to the outlet pipe of the external water supply equipment.

[0046] Please see Figures 1 to 3 As shown, in the induction heating assembly 1, both the two annular bodies and the two electrode connecting rods 12 are tubular structures. The two annular bodies are electrically connected by a conductive metal plate 13, which seals the inner tube ends of the two annular bodies. The two electrode connecting rods 12 are respectively connected to the ends of the two annular bodies. In this embodiment, the cross-section of the electrode connecting rod 12 is also a square tube. The electrode connecting rod 12 is fixed to the ends of the annular bodies by welding and is interconnected. The cross-section of the annular body is a square tube. The conductive metal plate 13 is a brass plate, and two annular bodies are welded to both ends of the brass plate along its length. The ends of the two annular bodies connected to it are located on opposite sides of the brass plate.

[0047] Please see Figures 1 to 3As shown, the induction heating assembly 1 also includes two mounting brackets 14, which are fixedly connected to two electrode rods 12 respectively. Each mounting bracket 14 has a through hole 141 through which the inner tube of the electrode rod 12 communicates with an external circulating water supply device. An insulating partition 15 is provided between the two mounting brackets 14, extending to the opening of the two annular bodies. In this embodiment, the mounting bracket 14 has an "L"-shaped structure. Its upper end is fixedly connected to the outer side of the electrode rod 12 by welding, and its lower end has a through hole 141. The ends of the electrode rods 12 are welded to the periphery of the through hole 141. By mounting the lower end of the mounting bracket 14 onto the mounting fixture on the outside of the circulating water supply device, the heating coil body 11 can be installed onto the outer wall of the circulating water supply device, saving on the layout of the cooling water circulation pipeline. The insulating partition 15 is clamped between the two mounting brackets 14 and fixed by insulating screws to prevent short circuit faults from occurring between the two electrode connecting rods 12 due to contact between the two mounting brackets 14.

[0048] Please see Figures 1 to 3 As shown, the induction heating assembly 1 further includes several insulating connectors 16 and at least two fourth mounting plates 17. The insulating connectors 16 are evenly distributed along the outer side of the heating coil body 11 and are used to fix and connect the two annular bodies. The at least two fourth mounting plates 17 are symmetrically arranged on the outer side of the heating coil body 11, and the fourth mounting plates 17 are provided with connecting grooves 171 for accommodating connecting screws. In this embodiment, there are four fourth mounting plates 17. The four fourth mounting plates 17 are symmetrically welded to the outer side of the heating coil body 11 in pairs. The fourth mounting plates 17 are placed on the clamping fixture of the external equipment, and then locked and fixed by screws into the connecting grooves 171 to ensure that the heating coil body 11 can be stably clamped during operation, thereby improving processing stability and safety. The induction heating assembly 1 is provided with a total of five insulating connectors 16. One of them is located on one side symmetrically with respect to the center of the annular body at the opening of the annular body, forming a straight line through the center of the annular body and the opening of the annular body. The other four insulating connectors 16 are symmetrically arranged on both sides in pairs with respect to this straight line as the axis, and are spaced a certain distance apart. The insulating connector 16 is a polytetrafluoroethylene nut with two screw holes. Matching bolts are welded to the outer sides of the two rings according to the distribution of the insulating connector 16. The connection and fixation of the two rings by the insulating connector 16 through the engagement of the bolts and screw holes is achieved.

[0049] Please see Figures 1 to 3As shown, both annular bodies are connected to circular pipes 18 on their outer sides. These circular pipes 18 are connected to the inner pipes of the annular bodies, and their ends are equipped with quick-connect fittings 19 for connecting to an external circulating water supply device. In this embodiment, because the connection between the two annular bodies is blocked by a conductive metal plate 13, cooling water cannot circulate between them. Therefore, a circular pipe 18 is installed on the outer side of each annular body to form a cooling water flow loop of "circulating water supply device—electrode connecting rod 12—annular body—circular pipe 18—circulating water supply device" to cool the annular body and prevent it from overheating and melting during heating. The induction heating component 1 adopts a dual-circulation design: one path allows water to enter through the electrode connecting rod 12, flow through the inner pipe of the annular body, and then return through the quick-connect fitting 19 of the circular pipe 18; the other path is symmetrically arranged to ensure uniform heat dissipation between the two annular bodies. The circular tube 18 is made of copper and is fixed to the outside of the circular ring by welding. For ease of pipe installation, the circular tube 18 is positioned close to the electrode connecting rod 12 but does not contact it to avoid short circuits. The quick connector 19 can be a standard threaded quick connector 19 for easy and quick connection to the circulating water supply equipment.

[0050] Please see Figure 1 , Figures 4 to 7 As shown, the upper ring 21 has an open-ring structure, with both ends of the open ring sealed. At least two first copper pipe joints 22 are symmetrically distributed along the line connecting the open ring of the upper ring 21 to the center. Two first mounting plates 23 are provided on the outer side of the upper ring 21, and the two first mounting plates 23 are symmetrically arranged along the line connecting the open ring of the upper ring 21 to the center. The first mounting plates 23 are provided with first screw holes 231. In this embodiment, the opening angle of the upper ring 21 does not exceed 10°. Both ends of the open ring of the upper ring 21 are sealed by welding copper plates. The four first copper pipe joints 22 are symmetrically arranged in pairs, allowing the cooling water supplied by the external water supply equipment to enter the inner pipe of the upper ring 21 simultaneously from a symmetrical direction. This effectively avoids the problem of uneven water flow impact and pressure distribution imbalance caused by unilateral water supply, ensuring that the water pressure in all parts of the inner pipe of the upper ring 21 is stable and consistent. Stable water pressure ensures uniform cooling water flow from each first spray hole 211, and the guide effect of the inclined inner ring further improves the uniformity of cooling on the corrugated roller surface, preventing tooth hardness deviations caused by insufficient or excessive local cooling. Two first mounting plates 23 are welded to the outer side of the upper ring body 21 and are located near the lower end face of the upper ring body 21. Each first mounting plate 23 has two first screw holes 231 for fixing the upper ring body 21 and the lower ring body 25 together with screws.

[0051] Please see Figure 1 , Figures 4 to 7As shown, the upper ring 21 of the cooling assembly 2 is provided with at least two baffles 24, each baffle 24 corresponding to a first copper pipe joint 22. Each baffle 24 has a water passage hole 241. In this embodiment, there are four baffles 24, just like the first copper pipe joints 22. The height of the baffles 24 is equal to the height of the inner tube of the upper ring 21. The baffles 24 are engaged by their upper and lower end faces respectively abutting against the upper and lower surfaces of the inner tube of the upper ring 21, and are fixed by laser welding to ensure they do not shift during water flow impact. The diameter of the water passage hole 241 is larger than the diameter of the first spray hole 211. There are several water passage holes 241, and the distance between each water passage hole 241 is greater than the distance between each first spray hole 211. A baffle plate 24 is provided corresponding to the first copper pipe joint 22 to temporarily block and divert the water flow entering from the first copper pipe joint 22. This allows most of the water flow to flow along the inner pipe of the upper ring body 21 to both ends. The water passage hole 241 allows a small portion of the water flow to pass through the baffle plate 24 and reach the first spray hole 211 corresponding to the first copper pipe joint 22. This effectively avoids the problems of uneven water flow impact and unbalanced pressure distribution, ensuring that the water pressure at all points in the inner pipe of the upper ring body 21 is stable and consistent. As a result, the cooling water sprayed from the first spray hole 211 at all points in the upper ring body 21 is uniform in volume and flow rate.

[0052] Please see Figure 1 , Figures 4 to 7 As shown, the cooling assembly 2 also includes a lower ring 25 coaxially arranged with the upper ring 21. The lower ring 25 is a tubular structure with a square cross-section. The outer diameter of the lower ring 25 is equal to the outer diameter of the upper ring 21, and the inner diameter of the lower ring 25 is equal to the minimum inner diameter of the upper ring 21. In this embodiment, the material of the lower ring 25 is the same as that of the upper ring 21. The lower ring 25 and the upper ring 21 are coaxially arranged and matched in size to ensure that their relative positions with the corrugated roller are stable. The water flow sprayed from the lower ring 25 is a traditional transverse water flow, which can form a synergistic cooling system with the upper ring 21, improving the cooling coverage of the water flow on the corrugated roller.

[0053] Please see Figure 1 , Figures 4 to 7As shown, the lower ring body 25 has an open-ring structure, with both ends of the open ring sealed. The lower ring body 25 is symmetrically provided with two second mounting plates 26 with the line connecting the open ring and the center of the circle as the axis. The second mounting plates 26 are provided with second screw holes 261. The upper ring body 21 and the lower ring body 25 are fixedly connected by screws passing through the first screw hole 231 and the second screw hole 261. The outer side of the lower ring body 25 is also provided with two third mounting plates 27, which are respectively provided with the two second mounting plates 26. The third mounting plates 27 are provided with third screw holes 271 for fixing the cooling component 2 to the external equipment with screws. In this embodiment, the opening angle of the lower ring body 25 does not exceed 10°. Both ends of the opening of the lower ring body 25 are sealed with copper plates. Two second mounting plates 26 are welded to the outside of the lower ring body 25, close to its upper surface. Each second mounting plate 26 has two second screw holes 261, corresponding to the positions of the first screw holes 231. When the upper ring body 21 is fixedly connected to the lower ring body 25, the lower surface of the upper ring body 21 is in contact with the upper surface of the lower ring body 25, the bottom surface of the first mounting plate 23 is in contact with the top surface of the second mounting plate 26, and the first screw holes 231 correspond one-to-one with the second screw holes 261. Then, screws and nuts are used for locking and fixing. A third mounting plate 27 is welded to the outside of the lower ring body 25, close to its lower surface. Each third mounting plate 27 has two third screw holes 271, used for installing screws to connect external equipment.

[0054] Please see Figure 1 , Figures 4 to 7As shown, the inner ring surface of the lower ring body 25 is perpendicular to its upper and lower end faces. A plurality of second water spray holes 251 are arrayed on the inner ring surface of the lower ring body 25. The axes of the second water spray holes 251 are perpendicular to the inner ring surface of the lower ring body 25, making the sprayed water flow transverse. At least two second copper pipe joints 28 are connected to the outer side of the lower ring body 25. The second copper pipe joints 28 are used to connect to external water supply equipment, and at least two second copper pipe joints 28 are symmetrically distributed along the line connecting the opening of the lower ring body 25 to the center. In this embodiment, the arrangement of the second water spray holes 251 ensures that the sprayed water flow is transverse, accurately covering the lower part of the corrugated roller and the tooth root, areas that the inclined water flow of the upper ring body 21 cannot fully reach. This effectively fills the blind spots in the cooling range of a single upper ring body 21, achieving full-surface cooling of the corrugated roller from top to bottom without dead angles, avoiding the problem of insufficient local cooling caused by incomplete coverage in traditional single cooling rings. The second copper pipe joint 28 is connected to the lower ring body 25 by welding. There are eight second copper pipe joints 28. The eight second copper pipe joints 28 are divided into two groups of four. The two groups of second copper pipe joints 28 are symmetrically arranged. The second copper pipe joints 28 in each group are evenly spaced. This allows the cooling water supplied by the external water supply equipment to enter the inner pipe of the lower ring body 25 from the symmetrical direction at the same time. This effectively avoids the problem of uneven water flow impact and unbalanced pressure distribution caused by unilateral water supply and ensures that the water pressure in the inner pipe of the lower ring body 25 is stable and consistent.

[0055] In summary, this utility model ensures that the distance between the heating coil body 11 and the surface of the corrugated roller is consistent throughout through the structural design of the heating coil body 11. The inclined inner ring surface of the cooling component 2 and the corresponding water spray hole design work together in a coaxial manner to effectively improve the uniformity of heating and cooling of the corrugated roller teeth, ensure consistent hardness, reduce equipment failure and maintenance frequency, and improve production efficiency and product qualification rate.

[0056] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A surface heat treatment apparatus for corrugated roll production, characterized in that, It includes an induction heating component (1) and a cooling component (2), wherein the induction heating component (1) and the cooling component (2) are coaxially arranged; The induction heating assembly (1) includes a heating coil body (11) and two electrode connecting rods (12). The heating coil body (11) is formed by two open-ringed circular bodies spaced apart. The two circular bodies are electrically connected at their open rings and are respectively electrically connected to the two electrode connecting rods (12). The two circular bodies are coaxially arranged and have the same diameter. The inner ring surfaces of the circular bodies are located on the same circumference to ensure that the distance between the inner ring surface of the heating coil body (11) and the workpiece surface is the same everywhere. The cooling assembly (2) includes a hollow upper ring body (21). At least two first copper pipe joints (22) are connected to the outer side of the upper ring body (21). The inner diameter of the upper ring body (21) gradually increases from top to bottom along its axis, making its inner ring surface inclined. A plurality of first water spray holes (211) are arrayed on the inner ring surface of the upper ring body (21). The axis of the first water spray holes (211) is perpendicular to the inner ring surface of the upper ring body (21).

2. The surface heat treatment apparatus for corrugated roll production according to claim 1, characterized in that, In the induction heating assembly (1), the two annular bodies and the two electrode connecting rods (12) are all tubular structures. The two annular bodies are electrically connected through a conductive metal plate (13), and the conductive metal plate (13) seals the inner tube ends of the two annular bodies. The two electrode connecting rods (12) are respectively connected to the ends of the two annular bodies.

3. The surface heat treatment apparatus for corrugated roll production according to claim 2, characterized in that, The induction heating assembly (1) also includes two mounting brackets (14), which are fixedly connected to two electrode rods (12) respectively. The mounting brackets (14) are provided with through holes (141), and the inner tubes of the electrode rods (12) are connected to the external circulating water supply equipment through the through holes (141). An insulating partition (15) is provided between the two mounting brackets (14), and the insulating partition (15) extends to the opening of the two annular bodies.

4. The surface heat treatment apparatus for corrugated roll production according to claim 2, characterized in that, The induction heating assembly (1) further includes a plurality of insulating connectors (16) and at least two fourth mounting plates (17). The plurality of insulating connectors (16) are evenly distributed along the outer side of the heating coil body (11) and are used to fix the two ring bodies. The at least two fourth mounting plates (17) are symmetrically arranged on the outer side of the heating coil body (11), and the fourth mounting plates (17) are provided with connecting grooves (171) for accommodating connecting screws.

5. The surface heat treatment apparatus for corrugated roll production according to claim 3, characterized in that, Both of the two annular bodies are connected to a circular tube (18) on their outer sides. The circular tube (18) is connected to the inner tube of the annular body. The end of the circular tube (18) is provided with a quick connector (19) for connecting to an external circulating water supply device.

6. The surface heat treatment apparatus for corrugated roll production according to claim 1, characterized in that, The upper ring (21) is an open ring structure, and both ends of the open ring are sealed. At least two first copper pipe joints (22) are symmetrically distributed on the line connecting the open ring of the upper ring (21) to the center. Two first mounting plates (23) are provided on the outer side of the upper ring (21). The two first mounting plates (23) are symmetrically arranged on the line connecting the open ring of the upper ring (21) to the center. The first mounting plate (23) is provided with a first screw hole (231).

7. The surface heat treatment apparatus for corrugated roll production according to claim 6, characterized in that, The upper ring (21) of the cooling component (2) is provided with at least two baffles (24), each baffle (24) is provided with a first copper pipe joint (22), and the baffle (24) has a water passage hole (241).

8. The surface heat treatment apparatus for corrugated roll production according to claim 6, characterized in that, The cooling assembly (2) also includes a lower ring (25) coaxially arranged with the upper ring (21). The lower ring (25) is a tubular structure with a square cross-section. The outer diameter of the lower ring (25) is equal to the outer diameter of the upper ring (21), and the inner diameter of the lower ring (25) is equal to the minimum inner diameter of the upper ring (21).

9. The surface heat treatment apparatus for corrugated roll production according to claim 8, characterized in that, The lower ring body (25) is an open-ring structure, and both ends of the open ring are sealed. The lower ring body (25) is symmetrically provided with two second mounting plates (26) with the line connecting the open ring and the center as the axis. The second mounting plates (26) are provided with second screw holes (261). The upper ring body (21) and the lower ring body (25) are fixedly connected by screws passing through the first screw hole (231) and the second screw hole (261). The lower ring body (25) is also provided with two third mounting plates (27) on the outside. The two third mounting plates (27) are respectively provided with the two second mounting plates (26). The third mounting plates (27) are provided with third screw holes (271) for fixing the cooling component (2) to the external equipment by screws.

10. The surface heat treatment apparatus for corrugated roll production according to claim 9, characterized in that, The inner ring surface of the lower ring body (25) is perpendicular to its upper and lower end surfaces. The inner ring surface of the lower ring body (25) is arrayed with a number of second water spray holes (251). The axis of the second water spray holes (251) is perpendicular to the inner ring surface of the lower ring body (25) so that the water sprayed is a transverse water flow. At least two second copper pipe joints (28) are connected to the outside of the lower ring body (25). The second copper pipe joints (28) are used to connect to external water supply equipment, and at least two second copper pipe joints (28) are symmetrically distributed along the line connecting the opening of the lower ring body (25) and the center.

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