A transverse magnetic induction heater and production line

Abstract

The utility model discloses a transverse magnetic induction heater and production line, the transverse magnetic induction heater includes frame, the upper induction body and lower induction body of being located in the frame and be located on the lifting adjusting mechanism of frame, the lifting adjusting mechanism includes drive unit, transmission mechanism and worm screw rod elevator, the worm screw rod elevator is located the top of frame, and its screw rod is connected with the upper induction body through the top of frame, drive unit is connected with the worm screw rod elevator through transmission mechanism, is used for driving worm screw rod elevator operation, and then drives screw rod and upper induction body to carry out the lifting movement to adjust the heating gap between upper induction body and lower induction body. The utility model ensures the absolute safety and stability of equipment in static and dynamic process, prevents major accident.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic induction heating technology, and in particular relates to a transverse magnetic induction heater and its production line. Background Technology

[0002] Horizontal magnetic induction heating technology is widely used in the heat treatment of metal sheets, strips, and other workpieces due to its high heating efficiency and good temperature uniformity. Traditional horizontal magnetic induction heaters typically consist of a fixed frame and upper and lower induction elements housed within the frame. During operation, the workpiece to be heated is placed in the heating gap between the upper and lower induction elements. Heating is achieved by inducing eddy currents in the workpiece through the alternating magnetic field generated by the induction elements.

[0003] However, existing upper inductor lifting and adjusting mechanisms in transverse magnetic induction heaters often employ simple lead screw or hydraulic drives. These methods have significant shortcomings when dealing with heavy upper inductors and conditions requiring high-precision gap control:

[0004] First, its self-locking performance is often poor. Under long-term operation or power failure, the upper inductor may slowly move down due to vibration or its own weight, which may cause changes in the heating gap, affect process stability, or even damage the workpiece or equipment.

[0005] Secondly, the adjustment precision and stability of conventional mechanisms are difficult to meet the stringent requirements of high-end processes for magnetic field uniformity. Poor adjustment can easily cause shocks and affect the lifespan of the equipment.

[0006] Furthermore, achieving synchronous lifting and lowering of multiple points to ensure the horizontality of the upper sensor results in a complex structure and makes it difficult to control the synchronization accuracy. Utility Model Content

[0007] In view of the above-mentioned defects in the existing technology, the purpose of this utility model is to provide a horizontal magnetic induction heater and production line, which can realize the smooth and precise lifting and lowering adjustment of the upper induction body and has reliable self-locking performance to ensure the long-term stability and safety of the heating gap.

[0008] This utility model solves the above-mentioned technical problems through the following technical solution: a horizontal magnetic induction heater, including a frame, an upper induction body and a lower induction body disposed within the frame, and a lifting adjustment mechanism disposed on the frame; the lower induction body is fixedly installed at the bottom of the frame, and the upper induction body is located above the lower induction body and connected to the lifting adjustment mechanism;

[0009] The lifting and adjusting mechanism includes a drive unit, a transmission mechanism, and at least one set of worm gear screw jacks; the worm gear screw jacks are located at the top of the frame, and their screws pass vertically through the top of the frame and are connected to the upper inductor; the drive unit is connected to the worm gear screw jacks through the transmission mechanism and is used to drive the worm gear screw jacks to operate, thereby driving the screws and the upper inductor to perform lifting and lowering movements, so as to adjust the heating gap between the upper inductor and the lower inductor.

[0010] In this embodiment, the worm gear pair in the worm screw jack has a reverse self-locking function, meaning that only the worm can drive the worm wheel, and the worm wheel cannot drive the worm in the reverse direction. This ensures that after the drive unit stops working, the weight of the upper inductor cannot force the worm wheel to reverse, thus mechanically and reliably locking the heating gap at the target position. This completely solves the problem of heating gap changes caused by vibration or weight, ensuring the absolute stability of the heating gap under long-term operation and power failure conditions, and fundamentally avoiding the risk of damaging the workpiece and equipment.

[0011] Worm gear screw jacks are characterized by their large transmission ratio, smooth operation, and low impact and noise. These characteristics allow the lifting and lowering motion of the upper inductor to be micro-motion at the millimeter level or even higher, rather than abrupt or impact-driven movements. Combined with a precision drive unit (such as a servo motor), precise control of the lifting distance can be achieved. This enables smooth, impact-free, and precise lifting of the upper inductor, ensuring accurate control of the heating gap, thereby optimizing the coupling efficiency between the magnetic field and the workpiece, and improving heating uniformity and process repeatability.

[0012] One drive unit can simultaneously drive multiple worm gear screw jacks through a transmission mechanism. Since all worm gear screw jacks have the same power source, they are mechanically forced to operate synchronously. This mechanical synchronization method is simpler, more reliable, and lower in cost, fundamentally ensuring the consistency of lifting at all points of the upper sensing element and effectively preventing the upper sensing element from tilting, jamming, or deforming during the lifting process.

[0013] Furthermore, the drive unit is a servo motor; the transmission mechanism is a reducer connected to the output end of the servo motor, and the reducer is connected to the worm gear screw jack via a coupling.

[0014] Furthermore, the lifting and adjusting mechanism also includes a manual crank wheel, which is connected to the worm gear screw jack via a transmission shaft.

[0015] Furthermore, the lifting adjustment mechanism also includes a lower stroke limiting structure and an upper stroke limiting structure; the lower stroke limiting structure is disposed on the lead screw and is used to limit the lowest position of the descent of the upper inductor; the lowest position corresponds to the heating gap when heating the thinnest workpiece; the upper stroke limiting structure is disposed on the frame and is used to limit the highest position of the rise of the upper inductor; the highest position is the sum of the heating gap and the safety distance when heating the thickest workpiece.

[0016] Furthermore, the lower stroke limiting structure is a retaining ring disposed on the lead screw; the upper stroke limiting structure is a stiffening plate welded to the frame and located on both sides of the lead screw.

[0017] Furthermore, the lower sensor is fixedly installed at the bottom of the frame via a first connecting seat, and the upper sensor is connected to the end of the screw of the worm gear screw jack via a second connecting seat; the worm gear screw jack is mounted on the top of the frame via a first mounting seat.

[0018] Furthermore, both the upper and lower sensors include a housing and an induction coil disposed within the housing. The induction coil maintains a certain safe electrical distance from the periphery of the housing, and the induction coil is fixed within the housing using a high-temperature resistant material.

[0019] Furthermore, the length of the induction coils in the upper and lower induction bodies is configured to be 4 to 8 times longer than the maximum workpiece width, so that the edge of the workpiece can obtain a higher temperature rise than the middle part through the edge effect, thereby compensating for the temperature loss caused by the rapid heat dissipation at the edge of the workpiece before it enters the heating station.

[0020] The width of the coil refers to the width of a single copper tube in the induction coil.

[0021] Based on the same concept, this utility model also provides a continuous casting and rolling production line, on which the horizontal magnetic induction heaters as described above are arranged.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The transverse magnetic induction heater provided by this utility model utilizes the reverse self-locking characteristic of worm gear transmission to achieve mechanical locking of the heating gap, eliminating the need for additional braking devices and ensuring absolute safety and stability of the equipment in both static and dynamic processes, preventing major accidents. The worm gear screw jack provides smooth transmission and can achieve gap adjustment with micron-level precision, ensuring uniform magnetic field distribution and process consistency, significantly improving heating quality and product quality. By driving multiple jacks with a single power source, the structure is simple and compact, with high synchronization accuracy, effectively avoiding damage to the upper induction element due to asynchrony and extending the life of the core components of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the transverse magnetic induction heater in an embodiment of this utility model;

[0026] Figure 2 This is a partial enlarged view of the worm gear screw jack in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 11-Frame, 12-Upper inductor, 121-Induction coil inside the upper inductor, 13-Lower inductor, 131-Induction coil inside the lower inductor, 14-Worm gear screw jack, 141-First mounting base, 142-Snap ring, 143-Firming plate, 15-Servo motor, 151-Second mounting base, 16-Reducer, 161-Coupling, 17-Second connecting base, 18-Manual crank, 19-First connecting base, 2-Workpiece. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0030] like Figure 1As shown, the transverse magnetic induction heater provided in this embodiment includes a frame 11, an upper inductor 12 and a lower inductor 13 disposed within the frame 11, and a lifting adjustment mechanism disposed on the frame 11. The lower inductor 13 is fixedly installed at the bottom of the frame 11, and the upper inductor 12 is located above the lower inductor 13 and connected to the lifting adjustment mechanism. The lifting adjustment mechanism includes a drive unit, a transmission mechanism, and at least one set of worm gear screw jacks 14. The worm gear screw jacks 14 are disposed at the top of the frame 11, and their screws vertically pass through the top of the frame 11 and are connected to the upper inductor 12. The drive unit is connected to the worm gear screw jacks 14 through the transmission mechanism and is used to drive the worm gear screw jacks 14 to run, thereby driving the screws and the upper inductor 12 to perform lifting movements to adjust the heating gap between the upper inductor 12 and the lower inductor 13.

[0031] In a specific embodiment of this utility model, the driving unit is a servo motor 15; the transmission mechanism is a reducer 16 connected to the output end of the servo motor 15, and the reducer 16 is connected to the worm gear screw jack 14 via a coupling 161. When the servo motor 15 drives the worm gear to rotate through the reducer 16, the screw rotates and moves up and down (or lifts and lowers), driving the upper induction body 12 to move, thereby adjusting the heating gap.

[0032] like Figure 1 As shown, in this embodiment, there are two sets of worm gear screw jacks 14, which are symmetrically arranged on the top of the frame 11. The screw of each worm gear screw jack 14 is connected to the upper sensor 12 through the second connecting seat 17 to ensure that the force on both sides of the top of the upper sensor 12 is balanced. The reducer 16 is installed in the middle position of the top of the frame 11 through the second mounting seat 151, and the reducer 16 is connected to the two sets of worm gear screw jacks 14 arranged symmetrically on the left and right through the coupling 161.

[0033] In this embodiment, the lifting adjustment mechanism also includes a manual crank 18, which is connected to the worm gear screw jack 14 via a transmission shaft. When the manual crank 18 is manually turned, the transmission shaft drives the screws in the two sets of worm gear screw jacks 14 to move up and down, thereby driving the upper induction body 12 to move, so as to control the heating gap during power outages or maintenance.

[0034] In a specific embodiment of this utility model, the lifting adjustment mechanism further includes a lower stroke limiting structure and an upper stroke limiting structure; the lower stroke limiting structure is disposed on the lead screw and is used to limit the lowest position of the descent of the upper inductor 12; the lowest position corresponds to the heating gap when heating the thinnest workpiece 2 (e.g., a slab); the upper stroke limiting structure is disposed on the frame 11 and is used to limit the highest position of the rise of the upper inductor 12; the highest position is the sum of the heating gap when heating the thickest workpiece 2 (e.g., a slab) and the safety distance. In this embodiment, the safety distance is set to 50mm.

[0035] like Figure 2 As shown, the lower stroke limiting structure is a retaining ring 142 installed on the lead screw; the upper stroke limiting structure is a stiffening plate 143 welded to the frame 11 and located on both sides of the lead screw.

[0036] In a specific embodiment of this utility model, the lower sensor 13 is fixedly installed at the bottom of the frame 11 via the first connecting seat 19, and the upper sensor 12 is connected to the end of the screw of the worm gear screw jack 14 via the second connecting seat 17; the worm gear screw jack 14 is located at the top of the frame 11 via the first mounting seat 141.

[0037] In a specific embodiment of this utility model, both the upper sensor 12 and the lower sensor 13 include a housing and an induction coil 121 / 131 disposed inside the housing. The induction coil 121 / 131 maintains a certain safe distance from the periphery of the housing, and the induction coil 121 / 131 is fixed inside the housing using a high-temperature resistant material.

[0038] In a specific embodiment of this utility model, the length of the induction coils 121 / 131 is configured as a row width that is 4 to 8 times longer than the width of the largest workpiece 2, so that the edge of the workpiece 2 can obtain a higher temperature rise than the middle part through the edge effect, thereby compensating for the temperature loss caused by the rapid heat dissipation at the edge of the workpiece 2 before entering the heating station and improving the uniformity of the workpiece temperature; wherein, the row width refers to the width of a single copper tube in the induction coils 121 / 131.

[0039] For example, the induction coils 121 / 131 are made of copper tubing, with a single copper tubing width of 20mm. Therefore, the length of the induction coils 121 / 131 of the upper induction body 12 and lower induction body 13 is greater than the width of the largest workpiece 2 by 80mm to 160mm. For one side, the length of the induction coils 121 / 131 is greater than the width of the largest workpiece 2 by 40mm to 80mm. Figure 1 The value of b in the figure is 40mm to 80mm.

[0040] The above description only discloses specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or modifications that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A horizontal magnetic induction heater, comprising a frame, an upper induction element and a lower induction element disposed within the frame, and a lifting adjustment mechanism disposed on the frame; the lower induction element is fixedly installed at the bottom of the frame, and the upper induction element is located above the lower induction element and connected to the lifting adjustment mechanism; characterized in that: The lifting and adjusting mechanism includes a drive unit, a transmission mechanism, and at least one set of worm gear screw jacks; the worm gear screw jacks are located at the top of the frame, and their screws pass vertically through the top of the frame and are connected to the upper inductor; the drive unit is connected to the worm gear screw jacks through the transmission mechanism and is used to drive the worm gear screw jacks to operate, thereby driving the screws and the upper inductor to perform lifting and lowering movements, so as to adjust the heating gap between the upper inductor and the lower inductor.

2. The transverse magnetic induction heater according to claim 1, characterized in that: The drive unit is a servo motor; the transmission mechanism is a reducer connected to the output end of the servo motor, and the reducer is connected to the worm gear screw jack via a coupling.

3. The transverse magnetic induction heater according to claim 1, characterized in that: The lifting and adjusting mechanism also includes a manual crank wheel, which is connected to the worm gear screw jack via a transmission shaft.

4. The transverse magnetic induction heater according to claim 1, characterized in that: The lifting adjustment mechanism further includes a lower stroke limit structure and an upper stroke limit structure; the lower stroke limit structure is provided on the lead screw and is used to limit the lowest position of the descent of the upper inductor; the lowest position corresponds to the heating gap when heating the thinnest workpiece; the upper stroke limit structure is provided on the frame and is used to limit the highest position of the rise of the upper inductor; the highest position is the sum of the heating gap and the safety distance when heating the thickest workpiece.

5. The transverse magnetic induction heater according to claim 4, characterized in that: The lower stroke limiting structure is a retaining ring provided on the lead screw; the upper stroke limiting structure is a stiffening plate welded to the frame and located on both sides of the lead screw.

6. The transverse magnetic induction heater according to claim 1, characterized in that: The lower sensor is fixedly installed at the bottom of the frame via a first connecting seat, and the upper sensor is connected to the end of the screw of the worm gear screw jack via a second connecting seat; the worm gear screw jack is located at the top of the frame via a first mounting seat.

7. The transverse magnetic induction heater according to claim 1, characterized in that: Both the upper and lower sensors include a housing and an induction coil disposed within the housing. The induction coil maintains a certain safe distance from the periphery of the housing and is fixed within the housing using a high-temperature resistant material.

8. The transverse magnetic induction heater according to any one of claims 1 to 7, characterized in that: The lengths of the induction coils within the upper and lower induction bodies are configured such that they are 4 to 8 times longer than the maximum workpiece width. The width of the coil refers to the width of a single copper tube in the induction coil.

9. A production line, characterized in that: The production line is equipped with a transverse magnetic induction heater as described in any one of claims 1 to 8.

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