Induction heating device

Abstract

The utility model provides a kind of induction annealing device, comprising: belt conveyor;Two metal pipes, are set in the opposite sides of the conveyor belt of belt conveyor, with the conveyor belt same direction extension, one end of two the metal pipe is connected with each other by wire, the other end is connected power supply by wire respectively, two the metal pipe and the wire of two ends constitute induction coil;Two supports, with the conveyor belt same direction extension, one the support is connected with one the metal pipe;Two horizontal moving assemblies, are erected above the support, interval setting along the extension direction of the conveyor belt, each the horizontal moving assembly is driven connection with two the support, for driving two the support move towards each other or move away from each other.This induction annealing device has good versatility, can be adapted to workpiece of different structure size, without different annealing device for different workpiece configuration, it is favorable to reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of induction tempering technology, specifically to an induction tempering device. Background Technology

[0002] Induction tempering is a metal heat treatment process that generates eddy currents within a workpiece using electromagnetic induction, and then utilizes the energy of these eddy currents for heating. Currently, different specialized induction tempering devices with matching structures are required for different workpiece structures, thus limiting the applicability of existing induction tempering devices to different workpiece structures. Furthermore, manufacturing specialized induction tempering devices for different workpiece structures increases production costs. Utility Model Content

[0003] In view of this, the present invention provides an induction tempering device to solve the above-mentioned technical problems.

[0004] The induction tempering device provided by this utility model includes:

[0005] Belt conveyor;

[0006] Two metal tubes are arranged on opposite sides of the conveyor belt of the belt conveyor and extend in the same direction as the conveyor belt. One end of the two metal tubes is connected to each other by a wire, and the other end is connected to a power source by a wire. The two metal tubes and the wires at both ends form an induction coil.

[0007] Two supports extend in the same direction as the conveyor belt, and one support is connected to a metal pipe.

[0008] Two horizontal moving components are mounted above the support and spaced apart along the extension direction of the conveyor belt. Each horizontal moving component is driven to be connected to the two supports and is used to drive the two supports to move towards each other or away from each other.

[0009] Optionally, each of the horizontal movement components includes:

[0010] Two support blocks are mounted on both sides of the conveyor belt;

[0011] The first screw has two opposite ends that are rotatably connected to the two support blocks respectively. The first screw has a first thread on its outer wall near its first end and a second thread on its outer wall near its second end. The first thread and the second thread have opposite directions of rotation.

[0012] Two horizontal sliders are threadedly connected to the first screw at the first thread and the second thread, respectively, and one horizontal slider is fixedly connected to one bracket.

[0013] Optionally, the horizontal movement component further includes:

[0014] A horizontal guide rod, the two ends of which are respectively fixedly connected to the two support blocks;

[0015] Two connecting plates are provided. One connecting plate is fixedly connected to one horizontal slider and to the bracket located on the same side of the conveyor belt. The two connecting plates are respectively fitted with the horizontal guide rod and are movably connected to the horizontal guide rod.

[0016] Optionally, the induction tempering device further includes a horizontal transmission assembly for driving the two horizontal moving components to move synchronously. The horizontal transmission assembly includes:

[0017] Two first transmission rods are vertically arranged, and the first ends of the two first transmission rods are respectively connected to the first screws in the two horizontal moving components through bevel gear pairs;

[0018] Two second transmission rods are parallel to the first screw, and the two second transmission rods are respectively connected to the second ends of the two first transmission rods through a bevel gear pair;

[0019] The third transmission rod is parallel to the conveyor belt and is mounted above the two horizontal moving components. The two ends of the third transmission rod are respectively connected to the two second transmission rods through bevel gear pairs.

[0020] Optionally, the induction tempering device further includes two lifting groups, which are spaced apart along the extension direction of the conveyor belt. Each lifting group corresponds to one horizontal moving component. Each lifting group includes two lifting components, which are respectively located on opposite sides of the conveyor belt. Each lifting component includes:

[0021] A support column, which is vertically arranged and fixedly connected to the frame of the belt conveyor;

[0022] Two fixing blocks are spaced apart in the extension direction of the support column and are fixedly connected to the support column respectively.

[0023] The second screw, with its opposite ends respectively rotatably connected to the two fixed blocks;

[0024] A lifting block is fitted with the second screw, is threadedly connected to the second screw, and is fixedly connected to the support block located on the same side of the conveyor belt.

[0025] Optionally, each of the lifting components further includes: a longitudinal guide rod, the first end of which is fixedly connected to the support column, and the second end of which passes through the support block located on the same side of the conveyor belt and is movably connected to the support block.

[0026] Optionally, the induction tempering device further includes a lifting transmission assembly, which drives each of the lifting assemblies to move synchronously. The lifting transmission assembly includes:

[0027] Two fourth transmission rods, the two opposite ends of the two fourth transmission rods are respectively connected to the second screw of the two lifting components of the lifting group through a bevel gear pair;

[0028] The fifth transmission rod is parallel to the conveyor belt, and its opposite ends are respectively connected to the two fourth transmission rods through bevel gear pairs.

[0029] Optionally, the induction tempering device further includes:

[0030] An inductance monitoring device, wherein the inductance monitoring device is used to monitor the inductance data in the induction coil;

[0031] A voltmeter, used to detect the voltage value across the power supply;

[0032] An ammeter, used to detect the current flowing through the metal tube;

[0033] The controller has its input terminal communicatively connected to the output terminal of the inductance monitoring device, the output terminal of the voltmeter, and the output terminal of the ammeter, and its output terminal communicatively connected to the control terminal of the power supply.

[0034] Optionally, the induction tempering device further includes:

[0035] An infrared temperature detector is provided, which is located at the output end of the conveyor belt and is communicatively connected to the input end of the controller.

[0036] The display screen has its input terminal communicatively connected to the output terminal of the controller.

[0037] Optionally, the induction tempering device further includes: a heat-insulating furnace body, which covers the belt conveyor and the horizontal moving component.

[0038] The technical solution provided by this utility model has at least the following beneficial effects compared with the prior art:

[0039] This novel induction tempering device utilizes a conveyor belt to transport workpieces. Metal tubes are arranged along the length of both sides of the conveyor belt, connected to wires and a power source to form an induction coil. This coil creates a changing magnetic field within the conveyor belt area, heating workpieces of any structural form placed on the belt under electromagnetic induction. A horizontal moving component drives the support and metal tubes to move towards or away from the conveyor belt, allowing adjustment of the induction coil range to suit workpieces of different sizes. This induction tempering device offers excellent versatility, adapting to workpieces of varying sizes and structures, eliminating the need for different tempering devices for different workpieces and thus reducing production costs. Attached Figure Description

[0040] Figure 1 This is a perspective structural diagram of the induction tempering device according to an embodiment of the present invention;

[0041] Figure 2 for Figure 1 A partially enlarged view of the induction tempering device shown;

[0042] Figure 3 for Figure 1 Front view of the induction tempering device shown;

[0043] Figure 4 for Figure 1 Left view of the induction tempering device shown;

[0044] Figure 5 for Figure 1 Top view of the induction tempering device shown;

[0045] Figure 6 This is a cross-sectional view of the wheel hub bearing cut along direction A.

[0046] Figure 7 This is a cross-sectional view of the wheel hub bearing cut in direction B.

[0047] Figure label:

[0048] 1: Belt conveyor; 101: Conveyor belt; 102: Frame; 2: Metal pipe; 3: Support; 31: Horizontal bar; 32: Vertical bar; 4: Horizontal moving assembly; 41: Support block; 42: First screw; 43: Horizontal slider; 44: Horizontal guide rod; 45: Connecting plate; 5: Horizontal transmission assembly; 51: First transmission rod; 52: Second transmission rod; 53: Third transmission rod; 6: Lifting assembly; 61: Support column; 62: Fixed block; 63: Second screw; 64: Lifting block; 65: Longitudinal guide rod; 7: Lifting transmission assembly; 71: Fourth transmission rod; 72: Fifth transmission rod; 8: Infrared temperature detector; 9: Bevel gear pair; 10: Handwheel. Detailed Implementation

[0049] The embodiments of this utility model will be further described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description of this utility model. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0050] Figure 1 This is a perspective structural diagram of the induction tempering device according to an embodiment of the present invention; Figure 2 for Figure 1 A partially enlarged view of the induction tempering device shown; Figure 3 for Figure 1 Front view of the induction tempering device shown; Figure 4 for Figure 1 Left view of the induction tempering device shown; Figure 5 for Figure 1 Top view of the induction tempering device shown.

[0051] like Figures 1-5As shown, the induction tempering device includes a belt conveyor 1, two metal pipes 2, two supports 3, and two horizontal moving components 4. The two metal pipes 2 are located on opposite sides of the conveyor belt 101 of the belt conveyor 1, extending in the same direction as the conveyor belt 101. One end of the two metal pipes 2 is connected to each other by a wire, and the other end is connected to a power source by a wire. The two metal pipes 2 and the wires at both ends form an induction coil. The two supports 3 extend in the same direction as the conveyor belt 101, and one support 3 is connected to one metal pipe 2. The two horizontal moving components 4 are mounted above the supports 3 and are spaced apart along the extension direction of the conveyor belt 101. Each horizontal moving component 4 is driven by two supports 3 and is used to drive the two supports 3 to move towards each other or away from each other.

[0052] When tempering the workpiece, the belt conveyor 1 is started, causing the conveyor belt 101 to run. The power is turned on, and an alternating current is passed through the induction coil formed by the metal tube 2 and the wire. The changing electric field generates a changing magnetic field in the space around the induction coil. Since the metal tube 2 extends in the same direction as the conveyor belt 101, its length can be equal to or close to the length of the conveyor belt 101. Therefore, a changing magnetic field exists almost throughout the length of the conveyor belt 101. Workpieces are placed at intervals on the conveyor belt 101 at the input end. The workpieces on the conveyor belt 101 enter the changing magnetic field and generate eddy currents inside due to electromagnetic induction. These eddy currents generate heat during their flow, causing the workpieces to reach the tempering temperature. Thus, the workpieces are heated during the conveying process on the conveyor belt 101 until they are transported to the output end of the conveyor belt 101. When the workpiece to be heated is too wide, the two horizontal moving components 4 are activated, causing the two supports 3 to move away from each other simultaneously. This, in turn, causes the two metal tubes 2 connected to the supports 3 to move away from each other, thus widening the range of the induction coil. When the workpiece is placed on the conveyor belt 101, the portion exceeding the width of the conveyor belt 101 will not interfere with the metal tubes 2 and supports 3 on both sides, ensuring that the entire workpiece is completely within the range of the induction coil and can be successfully heated under electromagnetic induction. When the workpiece to be heated is relatively small, the two horizontal moving components 4 can simultaneously drive the two supports 3 and metal tubes 2 to move towards each other, reducing the distance between the two metal tubes 2 and the conveyor belt 101 and improving the induction tempering effect.

[0053] This novel induction tempering device utilizes a conveyor belt 101 to transport workpieces. Metal tubes 2 are arranged along the length of both sides of the conveyor belt 101, connected to wires and a power source to form an induction coil. This coil creates a changing magnetic field within the conveyor belt 101, heating any workpiece placed on it under electromagnetic induction. The horizontal moving component 4 drives the support 3 and metal tubes 2 to move towards or away from the conveyor belt 101, adjusting the range of the induction coil to suit workpieces of different sizes. This induction tempering device offers excellent versatility, adapting to workpieces of varying sizes without requiring different tempering devices for different workpieces, thus reducing production costs.

[0054] like Figure 1 As shown, in this embodiment, the conveyor belt 101 extends horizontally, and a metal pipe 2 is arranged on each side of the conveyor belt 101. Copper pipes are used in this design. The metal pipes 2 extend in the same direction as the conveyor belt 101 and are approximately the same length as the conveyor belt 101. Two supports 3 also extend along the direction of the conveyor belt 101, each including a horizontal bar 31 parallel to the metal pipe 2 and of equal length, and multiple vertical bars 32 perpendicularly connected to the horizontal bar 31. The multiple vertical bars 32 are evenly spaced along the extension direction of the horizontal bar 31, and the end of each vertical bar 32 away from the horizontal bar 31 is fixedly connected to the metal pipe 2 on the same side. Two horizontal moving components 4 are spaced apart along the direction of the supports 3 to drive the two sides of the two supports 3 to move simultaneously towards each other or away from each other, that is, to move towards or away from the conveyor belt 101. Figure 1 Taking the conveyor belt 101 moving from left to right as an example, the left end of the conveyor belt 101 is the input end, and the right end is the output end. The workpiece is placed on the conveyor belt 101 at the input end, and moves synchronously with the conveyor belt 101. During the rightward movement, due to the changing current in the induction coil formed by the metal tube 2 and the wire, a changing magnetic field exists within approximately the entire extension range of the conveyor belt 101, thereby generating eddy currents inside the workpiece and heating it until the workpiece is moved to the right end of the conveyor belt 101 and removed. Depending on the actual application, the horizontal moving component 4 can be composed of any structure, as long as it can drive the two supports 3 on both sides of the conveyor belt 101 and the metal tube 2 connected to the supports 3 to move towards or away from each other, thereby adjusting the distance between the metal tube 2 and the conveyor belt 101. The supports 3 can be any structure extending along the metal tube 2, as long as they can connect the metal tube 2 and the horizontal moving component 4, and can drive the two metal tubes 2 to move towards or away from each other under the drive of the horizontal moving component 4. Both induction coils and induction heating are mature existing technologies, and their specific structures and principles will not be elaborated here.

[0055] Optionally, each horizontal moving component 4 includes two support blocks 41, a first screw 42, and two horizontal sliders 43. The two support blocks 41 are mounted on both sides of the conveyor belt 101; the opposite ends of the first screw 42 are rotatably connected to the two support blocks 41 respectively. A first thread is provided on the outer wall of the first screw 42 near its first end, and a second thread is provided on the outer wall near its second end. The first and second threads rotate in opposite directions. The two horizontal sliders 43 are threadedly connected to the first screw 42 at the first thread and the second thread respectively, and one horizontal slider 43 is fixedly connected to a bracket 3. This configuration simplifies the structural composition of the horizontal moving component 4, making operation convenient and movement stable.

[0056] like Figure 2 As shown, in this embodiment, two support blocks 41 are mounted above both sides of the conveyor belt 101. The first screw 42 is horizontally positioned and perpendicular to the extension direction of the conveyor belt 101, mounted above the conveyor belt 101. Its two ends are rotatably connected to the support blocks 41 on both sides via bearings. The first screw 42 has a first thread and a second thread with opposite directions on its outer walls, with the center as the boundary. Two horizontal sliders 43 are respectively fitted onto the first screw 42. One horizontal slider 43 is threaded to the first screw 42 at the first thread, and the other horizontal slider 43 is threaded to the second screw 63 at the second thread. The horizontal sliders 43 are fixedly connected to the bracket 3 located on the same side of the conveyor belt 101. When it is necessary to move the two metal pipes 2 away from the conveyor belt 101, the first screw 42 is rotated along the first direction. Because the first thread and the second thread have opposite directions, the two horizontal sliders 43 move away from each other along the first screw 42, thereby causing the two brackets 3 and the metal pipes 2 connected to the two horizontal sliders 43 to move away from each other, ultimately moving the metal pipes 2 away from the conveyor belt 101. When it is necessary to move the two metal tubes 2 closer to the conveyor belt 101, the first screw 42 is rotated in the second direction opposite to the first direction. Then the two horizontal sliders 43 move towards each other along the first screw 42, which in turn drives the two supports 3 and the metal tubes 2 connected to the two horizontal sliders 43 to move towards each other, and finally makes the metal tubes 2 closer to the conveyor belt 101.

[0057] Optionally, the horizontal moving assembly 4 further includes a horizontal guide rod 44 and two connecting plates 45. The two ends of the horizontal guide rod 44 are fixedly connected to two support blocks 41 respectively; one connecting plate 45 is fixedly connected to a horizontal slider 43 and to a bracket 3 located on the same side of the conveyor belt 101. The two connecting plates 45 are respectively fitted with the horizontal guide rod 44 and are movably connected to it. This arrangement limits the movement of the horizontal slider 43 by means of the horizontal guide rod, ensuring the stability of the horizontal slider 43's linear movement along the first screw 42, thereby ensuring the stability of the movement of the bracket 3 and the metal tube 2.

[0058] like Figure 2As shown, in this embodiment, two horizontal guide rods 44 are provided on both sides of the first screw 42. They are horizontally arranged and parallel to the first screw 42. The two ends of the horizontal guide rods 44 are fixedly connected to the support blocks 41 on both sides. The connecting plate 45 is a cuboid plate. A horizontal slider 43 is fitted at the center of the connecting plate 45 and fixedly connected to the horizontal slider 43. Two horizontal guide rods 44 are fitted on both sides of the connecting plate 45 and can slide along the horizontal guide rods 44. The lower end of the connecting plate 45 is fixedly connected to the bracket 3. Figure 2 To clearly distinguish between the horizontal slider 43 and the connecting plate 45, they are shown separately. In actual application, the connecting plate 45 is fitted around the horizontal slider 43, and the two are fixedly connected. When the first screw 42 is rotated, the two horizontal sliders 43 move towards each other or away from each other along the first screw 42, thereby driving the two connecting plates 45 to move towards each other or away from each other, and further driving the bracket 3 and metal tube 2, which are directly or indirectly connected to the connecting plates 45, to move towards each other or away from each other. Moreover, during the movement of the two horizontal sliders 43 and the two connecting plates 45, the two connecting plates 45, because they are fitted with horizontal guide rods 44, can only move along the horizontal guide rods 44 and will not deviate from their path. According to the actual application, the specific shape and size of the connecting plate 45 and the specific connection method with the horizontal slider 43 can be adjusted, and the number of horizontal guide rods 44 can also be adjusted.

[0059] Optionally, the induction tempering device further includes a horizontal transmission assembly 5, which drives the two horizontal moving assemblies 4 to move synchronously. The horizontal transmission assembly 5 includes two first transmission rods 51, two second transmission rods 52, and a third transmission rod 53. The two first transmission rods 51 are vertically arranged, and their first ends are respectively connected to the first screws 42 in the two horizontal moving assemblies 4 via bevel gear pairs 9. The two second transmission rods 52 are parallel to the first screws 42, and their second ends are respectively connected to the second ends of the two first transmission rods 51 via bevel gear pairs 9. The third transmission rod 53 is parallel to the conveyor belt 101 and is mounted above the two horizontal moving assemblies 4. The opposite ends of the third transmission rod 53 are respectively connected to the two second transmission rods 52 via bevel gear pairs 9. By setting up the horizontal transmission assembly 5, it is possible to ensure that the two horizontal moving assemblies 4 move simultaneously, thereby ensuring the overall synchronous movement of the two supports 3 and the metal tube 2 in the extension direction, and preventing the two supports 3 at corresponding positions of the two horizontal moving assemblies 4 from having different widths.

[0060] like Figure 2As shown, in this embodiment, the first transmission rod 51, the second transmission rod 52, and the third transmission rod 53 are all mounted above the support 3. The two first transmission rods 51 are vertically arranged, the two second transmission rods 52 are horizontally arranged and parallel to the first screw 42, and the third transmission rod 53 is horizontally arranged and extends along the conveyor belt 101. The same end of the first screw 42 in the two horizontal moving components 4, protruding from the support block 41, is connected to the lower end of one of the first transmission rods 51 via a bevel gear pair 9. The upper end of one of the first transmission rods 51 is connected to one end of one of the second transmission rods 52 via a bevel gear pair 9. The two second transmission rods 52 are also connected to both ends of the third transmission rod 53 via bevel gear pairs 9. When it is necessary to adjust the distance between the two supports 3, one of the first transmission rods 51, the second transmission rod 52, or the third transmission rod 53 can be rotated arbitrarily. Because the transmission connection is achieved by multiple bevel gear pairs 9, the synchronous rotation of the two first screws 42 can be realized. Figure 2 Taking the second transmission rod 52 on the left as an example, rotating the second transmission rod 52 on the left causes the first transmission rod 51 on the left, which is connected to it, to rotate. This, in turn, causes the first screw 42, which is connected to the first transmission rod 51 on the left, to rotate. Simultaneously, the third transmission rod 53, which is connected to the second transmission rod 52 on the left, rotates, causing the second transmission rod 52 on the right, which is connected to the right end of the third transmission rod 53, to rotate. This, in turn, causes the first transmission rod 51 on the right, which is connected to the second transmission rod 52 on the right, to rotate. Finally, the first screw 42 on the right, which is connected to the first transmission rod 51 on the right, rotates synchronously with the first screw 42 on the left. To facilitate rotating the transmission rods, as... Figure 2 As shown, in this embodiment, a handwheel 10 is installed at the end of the second transmission rod 52 on the left side. Using a bevel gear pair 9 to achieve the transmission connection between the transmission rods is a mature existing technology; the connection relationship between the bevel gear and each transmission rod will not be described further here.

[0061] Optionally, the induction tempering device also includes two lifting groups, which are spaced apart along the extension direction of the conveyor belt 101. Each lifting group corresponds to one horizontal moving component 4. Each lifting group includes two lifting components 6, which are respectively located on opposite sides of the conveyor belt 101. Each lifting component 6 includes a support column 61, two fixing blocks 62, a second screw 63, and a lifting block 64. The support column 61 is vertically arranged and fixedly connected to the frame 102 of the belt conveyor 1. The two fixing blocks 62 are spaced apart along the extension direction of the support column 61 and are fixedly connected to the support column 61 respectively. The opposite ends of the second screw 63 are rotatably connected to the two fixing blocks 62 respectively. The lifting block 64 is fitted with the second screw 63, threadedly connected to the second screw 63, and fixedly connected to the support block 41 located on the same side of the conveyor belt 101. The height position for intensive heating of different batches of workpieces may be different. The lifting group can be used to move the metal tube 2 to the height position for intensive heating of the workpiece, which is beneficial for sufficient heating.

[0062] like Figure 1 and Figure 2 As shown, in this embodiment, two lifting groups are provided, located on the left and right sides of the center of the conveyor belt 101. Each lifting group includes two lifting components 6 located on opposite sides of the conveyor belt 101. The support column 61 is a rectangular column, vertically arranged, and vertically fixedly connected to the frame 102 of the belt conveyor 1. The second screw 63 is also vertically arranged, with both ends rotatably connected to the fixing blocks 62 fixed on the support column 61, and both ends of the second screw 63 penetrate through and protrude from the corresponding fixing blocks 62. When it is necessary to lift the metal pipe 2, the second screw 63 in the four lifting components 6 is rotated simultaneously, causing the four lifting blocks 64 fitted with the four second screws 63 to move up or down relative to the second screws 63 at the same time. This drives the support block 41 fixedly connected to the lifting block 64 to rise or fall simultaneously, thereby driving the entire horizontal moving component 4 to rise or fall, and finally driving the bracket 3 and the metal pipe 2 connected to the horizontal moving component 4 to rise or fall. Because the two lifting groups located at different positions along the length of the metal pipe 2 operate simultaneously, the overall stable lifting of the metal pipe 2 is achieved.

[0063] Optionally, each lifting assembly 6 further includes a longitudinal guide rod 65. The first end of the longitudinal guide rod 65 is fixedly connected to the support column 61, and the second end of the longitudinal guide rod 65 passes through the support block 41 located on the same side of the conveyor belt 101 and is movably connected to the support block 41. With the help of the longitudinal guide rod 65, the lifting path of the lifting block 64 and the horizontal moving assembly 4 can be limited to prevent movement deviation and ensure the stability of lifting.

[0064] like Figure 2As shown, in this embodiment, the upper end of the longitudinal guide rod 65 is fixedly connected to the support column 61 via a mounting plate. The support block 41 has a through-hole, and the lower end of the longitudinal guide rod 65 passes through the corresponding through-hole. The support block 41 can move along the longitudinal guide rod 65. When the second screw 63 is rotated, causing the lifting block 64 to move linearly along the second screw 63, the support block 41, which is fixedly connected to the lifting block 64, moves linearly along the longitudinal guide rod 65 simultaneously, further ensuring the stability of the lifting block 64's linear movement along the second screw 63.

[0065] Optionally, the induction tempering device further includes a lifting transmission assembly 7, which drives each lifting assembly 6 to move synchronously. The lifting transmission assembly 7 includes two fourth transmission rods 71 ​​and a fifth transmission rod 72. The opposite ends of the two fourth transmission rods 71 ​​are respectively connected to the second screws 63 of the two lifting assemblies 6 in a set of lifting groups through bevel gear pairs 9; the fifth transmission rod 72 is parallel to the conveyor belt 101, and the opposite ends of the fifth transmission rod 72 are respectively connected to the two fourth transmission rods 71 ​​through bevel gear pairs 9. By setting up the lifting transmission assembly 7, it is possible to ensure that the second screws 63 in the four lifting assemblies 6 rotate simultaneously, thereby ensuring that the four lifting blocks 64 drive the horizontal moving assembly 4 to rise and fall simultaneously, and ensuring that the bracket 3 and the metal tube 2 rise and fall smoothly as a whole.

[0066] like Figure 2 As shown, in this embodiment, both fourth transmission rods 71 ​​are horizontally arranged and perpendicular to the extension direction of the conveyor belt 101, and parallel to the two first screws 42. The two ends of the two fourth transmission rods 71 ​​are respectively connected to the top ends of the second screws 63 in the corresponding two lifting assemblies 6 via bevel gear pairs 9. The fifth transmission rod 72 is horizontally arranged and parallel to the extension direction of the conveyor belt 101, and its two ends are respectively connected to the two fourth transmission rods 71 ​​via bevel gear pairs 9. When it is necessary to lift the metal pipe 2, it is rotated... Figure 2 Taking the fourth transmission rod 71 on the left as an example, its rotation drives the second screws 63 in the lifting assemblies 6 on both sides to rotate simultaneously via the bevel gear pairs 9 at both ends. Furthermore, the bevel gear pair 9 in the middle drives the fifth transmission rod 72 to rotate. The rotation of the fifth transmission rod 72 drives the fourth transmission rod 71 on the right, which is connected to it via the bevel gear pair 9, to rotate. The rotation of the fourth transmission rod 71 on the right drives the second screws 63 in the two lifting assemblies 6 connected to it via the bevel gear pairs 9 to rotate simultaneously. Therefore, all four second screws 63 in the four lifting assemblies 6 rotate simultaneously. Consequently, the four lifting blocks 64, threadedly connected to the second screws 63, drive the two horizontal moving assemblies 4, the bracket 3, and the metal tube 2 to rise and fall simultaneously via the support block 41. When all four lifting assemblies 6 need to operate simultaneously, this can be achieved by rotating any one of the two fourth transmission rods 71 ​​or the fifth transmission rod 72.

[0067] Optionally, the induction tempering device also includes an inductance monitoring device (not shown), a voltmeter (not shown), an ammeter (not shown), and a controller (not shown). The inductance monitoring device is used to monitor the inductance data in the induction coil; the voltmeter is used to detect the voltage value across the power supply; the ammeter is used to detect the current value flowing through the metal tube 2; the input terminal of the controller is communicatively connected to the output terminals of the inductance monitoring device, the voltmeter, and the ammeter, and the output terminal of the controller is communicatively connected to the control terminal of the power supply. When the output frequency of the power supply is at the resonant frequency, the induction tempering device is in its optimal operating state. The output power of the power supply is matched with the no-load or heavy-load state of the conveyor belt 101 to ensure the stability of workpiece heating. The above settings allow the controller to adjust the output frequency and output power of the power supply according to the change in the number of workpieces on the conveyor belt 101, i.e., when the load changes.

[0068] The number of workpieces in the induction coil changes its equivalent inductance L. As the number of workpieces increases, the equivalent inductance L increases. To maintain resonance and achieve optimal energy transfer and heating, the output frequency f needs to be reduced. Conversely, as the number of workpieces decreases, the equivalent inductance L decreases, requiring an increase in the output frequency f. An inductance monitoring device monitors the inductance data of the induction coil and transmits it to the controller. The controller has a pre-stored correspondence between different inductance data and the output frequency f to maintain resonance. The controller then adjusts the output frequency f based on this correspondence. The inductance monitoring device can be any device capable of monitoring the inductance data in the induction coil. It can be a standalone device, such as an inductance sensor, or integrated into the controller, such as a FIPR electronic card. Inductance monitoring devices are mature existing technology, and their specific structures and working principles will not be elaborated here. The controller's control logic for adjusting the power output frequency based on the inductance data can be implemented using existing mature algorithms, and its specific principles will not be elaborated here.

[0069] The voltmeter detects the voltage across the power supply and transmits the value to the controller. The ammeter detects the current flowing through the metal tube 2 (i.e., through the induction coil) and transmits the value to the controller. The controller receives the voltage, current, and inductance data and has pre-stored the correspondence between different voltage, current, and inductance values ​​and their corresponding output power. In constant current mode, the output current remains constant regardless of external factors, and the output power is adjusted by regulating the output voltage. In constant voltage mode, the output voltage remains constant regardless of external factors, and the output power is adjusted by regulating the output current. Regulating the output power of AC power supplies in constant current or constant voltage modes is a mature existing technology, and its specific adjustment principles and processes will not be elaborated here.

[0070] Optionally, the induction tempering device also includes an infrared temperature detector 8 and a display screen (not shown). The infrared temperature detector 8 is located at the output end of the conveyor belt 101, and its output end is communicatively connected to the input end of the controller; the input end of the display screen is communicatively connected to the output end of the controller. The infrared temperature detector 8 can be used to detect the temperature of the workpiece conveyed to the output end of the conveyor belt 101. If the workpiece temperature is below standard, the workpiece can be returned to the input end of the conveyor belt 101 for repeated induction tempering.

[0071] like Figure 1 As shown, in this embodiment, the left end of the conveyor belt 101 is the input end, and the right end is the output end. Infrared temperature detectors 8 are respectively installed at the input and output ends of the conveyor belt 101 to detect the initial temperature and the temperature after tempering heating of the workpiece. The infrared temperature detectors 8 detect the temperature data of the workpiece and transmit the temperature data to the controller. The controller receives the temperature data and transmits it to the display screen for easy observation by the operator. A speed sensor can also be installed to monitor the movement speed of the conveyor belt 101 and transmit the movement speed to the controller. The controller then transmits the movement speed to the display screen for display. Different workpieces require different heating times, and the time it takes for the workpiece to move from the input end to the output end of the conveyor belt 101 can be adjusted by regulating the movement speed of the conveyor belt 101.

[0072] Optionally, the induction tempering device also includes a heat-insulating furnace body (not shown), which covers the belt conveyor 1 and the horizontal moving assembly 4. To prevent heat loss, the heat-insulating furnace body is provided, completely enclosing the belt conveyor 1 and the horizontal moving assembly 4. If a lifting assembly 6 is present, it is also enclosed within the furnace body. The heat-insulating furnace body only serves to prevent heat loss and does not require additional heating functionality.

[0073] Figure 6 This is a cross-sectional view of the wheel hub bearing cut along direction A. Figure 7 This is a cross-sectional view of the wheel hub bearing cut along direction B. (Example:) Figure 6 and Figure 7 As shown, cutting directions A and B of the wheel hub bearing are two different cutting directions. Cutting direction A cuts the thick edge of the wheel hub bearing and the flange lug, while cutting direction B cuts the thin edge of the wheel hub bearing but does not cut the flange lug. The wheel hub bearing is heated using the induction tempering device of this invention. Table 1 shows the hardness measurement results of the heated wheel hub bearing. Figure 6 , Figure 7As shown in Table 1, six positions were selected on both cutting directions A and B of the wheel bearing for hardness measurement, including the thin edge, thick edge, raceway groove, raceway contact angle, and raceway sharp angle of the wheel bearing workpiece. The measurement results in Table 1 show that the hardness of the wheel bearing is relatively uniform across different positions on different cutting directions. Since hardness is closely related to the heating effect of induction tempering, the uniformity of the hardness of the wheel bearing indicates that the temperature of the wheel bearing after being heated by the induction tempering device of this invention is uniform.

[0074] Table 1. Hardness Measurement Results of Wheel Hub Bearings After Heating

[0075]

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An induction tempering device, characterized in that, include: Belt conveyor; Two metal tubes are arranged on opposite sides of the conveyor belt of the belt conveyor and extend in the same direction as the conveyor belt. One end of the two metal tubes is connected to each other by a wire, and the other end is connected to a power source by a wire. The two metal tubes and the wires at both ends form an induction coil. Two supports extend in the same direction as the conveyor belt, and one support is connected to a metal pipe. Two horizontal moving components are mounted above the support and spaced apart along the extension direction of the conveyor belt. Each horizontal moving component is driven to be connected to the two supports and is used to drive the two supports to move towards each other or away from each other.

2. The induction tempering device according to claim 1, characterized in that, Each of the horizontal movement components includes: Two support blocks are mounted on both sides of the conveyor belt; The first screw has two opposite ends that are rotatably connected to the two support blocks respectively. The first screw has a first thread on its outer wall near its first end and a second thread on its outer wall near its second end. The first thread and the second thread have opposite directions of rotation. Two horizontal sliders are threadedly connected to the first screw at the first thread and the second thread, respectively, and one horizontal slider is fixedly connected to one bracket.

3. The induction tempering device according to claim 2, characterized in that, The horizontal movement component also includes: A horizontal guide rod, the two ends of which are respectively fixedly connected to the two support blocks; Two connecting plates are provided. One connecting plate is fixedly connected to one horizontal slider and to the bracket located on the same side of the conveyor belt. The two connecting plates are respectively fitted with the horizontal guide rod and are movably connected to the horizontal guide rod.

4. The induction tempering device according to claim 2 or 3, characterized in that, It also includes a horizontal transmission assembly, which drives the two horizontal moving components to move synchronously. The horizontal transmission assembly includes: Two first transmission rods are vertically arranged, and the first ends of the two first transmission rods are respectively connected to the first screws in the two horizontal moving components through bevel gear pairs; Two second transmission rods are parallel to the first screw, and the two second transmission rods are respectively connected to the second ends of the two first transmission rods through a bevel gear pair; The third transmission rod is parallel to the conveyor belt and is mounted above the two horizontal moving components. The two ends of the third transmission rod are respectively connected to the two second transmission rods through bevel gear pairs.

5. The induction tempering device according to claim 2 or 3, characterized in that, It also includes two lifting groups, which are spaced apart along the extension direction of the conveyor belt. Each lifting group corresponds to one horizontal moving component. Each lifting group includes two lifting components, which are respectively located on opposite sides of the conveyor belt. Each lifting component includes: A support column, which is vertically arranged and fixedly connected to the frame of the belt conveyor; Two fixing blocks are spaced apart in the extension direction of the support column and are fixedly connected to the support column respectively. The second screw, with its opposite ends respectively rotatably connected to the two fixed blocks; A lifting block is fitted with the second screw, is threadedly connected to the second screw, and is fixedly connected to the support block located on the same side of the conveyor belt.

6. The induction tempering device according to claim 5, characterized in that, Each of the lifting components further includes: A longitudinal guide rod, the first end of which is fixedly connected to the support column, and the second end of which passes through the support block located on the same side of the conveyor belt and is movably connected to the support block.

7. The induction tempering device according to claim 5, characterized in that, It also includes a lifting transmission assembly, which is used to drive each of the lifting components to move synchronously. The lifting transmission assembly includes: Two fourth transmission rods, the two opposite ends of the two fourth transmission rods are respectively connected to the second screw of the two lifting components of the lifting group through a bevel gear pair; The fifth transmission rod is parallel to the conveyor belt, and its opposite ends are respectively connected to the two fourth transmission rods through bevel gear pairs.

8. The induction tempering device according to claim 2 or 3, characterized in that, Also includes: An inductance monitoring device, wherein the inductance monitoring device is used to monitor the inductance data in the induction coil; A voltmeter, used to detect the voltage value across the power supply; An ammeter, used to detect the current flowing through the metal tube; The controller has its input terminal communicatively connected to the output terminal of the inductance monitoring device, the output terminal of the voltmeter, and the output terminal of the ammeter, and its output terminal communicatively connected to the control terminal of the power supply.

9. The induction tempering device according to claim 8, characterized in that, Also includes: An infrared temperature detector is provided, which is located at the output end of the conveyor belt and is communicatively connected to the input end of the controller. The display screen has its input terminal communicatively connected to the output terminal of the controller.

10. The induction tempering device according to claim 2 or 3, characterized in that, Also includes: The insulated furnace body is covered by the belt conveyor and the horizontal moving assembly.

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