High-frequency induction quenching coil capable of uniformly heating

Abstract

The invention belongs to the technical field of high-frequency quenching coils, and particularly discloses a high-frequency induction quenching coil capable of uniformly heating, which is characterized by comprising a coil diameter self-adaptive mechanism and a coil rotating mechanism, the coil diameter self-adaptive mechanism comprises an elastic induction coil, a centrifugal collecting assembly and a sliding guide mechanism, the elastic induction coil is arranged in the sliding guide mechanism in a sliding mode, and the centrifugal collecting assemblies are evenly distributed in the sliding guide mechanism in an annular mode. According to the scheme, a control scheme based on the rotating speed is adopted, the elastic induction coil is collected in cooperation with the balancing weight and the collecting rope, the technical prejudice that the diameter of a rotating object is increased along with increasing of the rotating speed is overcome, and the technical effect that the higher the rotating speed is, the smaller the diameter of the elastic induction coil is is is achieved; and meanwhile, the electric brush and the two semicircular extension plates are alternately connected in the rotating process, so that the frequency can be automatically regulated and controlled.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-frequency quenching coils, and specifically refers to a high-frequency induction quenching coil capable of uniform heating. Background Art

[0002] Induction heating is to heat the workpiece by generating eddy currents inside the workpiece through the principle of electromagnetic induction. When the alternating current output by the device passes through the inductance coil, an alternating magnetic field will be generated, and then eddy currents will be generated inside the workpiece. These eddy currents generate heat due to resistance, thereby heating the workpiece.

[0003] Generally speaking, in order to ensure the heating effect, the shape of the coil should match the workpiece. For example, for cylindrical parts, a circular coil is preferred, and the inner diameter of the coil is slightly larger than the outer diameter of the workpiece. This results in that in order to achieve the best heating effect, coils of different diameters need to be matched for workpieces of each diameter. Currently, the common practice is to sacrifice a part of the heating efficiency and energy utilization rate, and use one or several universal coils to match different workpieces.

[0004] For different workpieces, not only the coil diameter requirements are different, but also the frequency requirements for current direction conversion are different: for small-diameter workpieces, due to the thin thickness, the frequency can be increased to increase the heating speed; but for large-diameter parts, due to the skin effect, the higher the frequency, the shallower the heating depth of the workpiece. At this time, the heating depth can only be increased by reducing the frequency to adapt to the large wall thickness of the large-diameter workpiece; this kind of frequency adjustment generally needs to be carried out actively. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a high-frequency induction quenching coil capable of uniform heating; in order to realize the adjustment of the coil diameter, this solution adopts a rotation speed control scheme, and cooperates with a counterweight and a retraction rope to realize the retraction of the elastic induction coil, overcoming the technical prejudice that the diameter of a rotating object increases with the increase of the rotation speed, and achieving the technical effect that the faster the rotation speed, the smaller the diameter of the elastic induction coil; at the same time, through the alternating connection of the brush and two semi-circular extension plates during the rotation process, the frequency can be automatically regulated.

[0006] Since the elastic induction coil adopted in this solution is essentially a special-shaped coil, compared with a circular coil, the special-shaped coil has the defect of uneven heating. Therefore, most workpieces need to be equipped with an additional rotating mechanism during heating; while in the present invention, since the coil itself is rotating, relative rotation between the coil and the workpiece can still be achieved without setting a workpiece rotating mechanism, and thus the technical disadvantages brought by the special-shaped coil can be just eliminated.

[0007] The technical solution adopted by the present invention is as follows: The present invention provides a high-frequency induction quenching coil capable of uniform heating, which is characterized in that it includes a coil diameter self-adaptive mechanism and a coil rotation mechanism. The coil diameter self-adaptive mechanism includes an elastic induction coil, a centrifugal converging assembly, and a sliding guiding mechanism. The elastic induction coil is slidably disposed in the sliding guiding mechanism, and the centrifugal converging assembly is annularly and uniformly disposed in the sliding guiding mechanism.

[0008] Further, the coil rotation mechanism includes an electrode, and a semi-circular extension plate is provided on the electrode. Two semi-circular extension plates form a ring, and there is no contact between the two semi-circular extension plates.

[0009] By means of the coil rotation, on the one hand, the inner diameter of the elastic induction coil can be dynamically adjusted, and on the other hand, the current direction inside the elastic induction coil can also be changed by rotation, creating conditions for the change of the magnetic field direction inside the elastic induction coil.

[0010] Preferably, the elastic induction coil has elasticity. The elastic induction coil has a tendency to automatically unfold when at rest. When the elastic induction coil slides along the sliding guiding mechanism, through the folding and unfolding of the elastic induction coil itself, the inner diameter of the elastic induction coil will also change accordingly; Among them, brush contacts slidably contacting the semi-circular extension plates are symmetrically provided on the elastic induction coil.

[0011] The frequency of the current change in the elastic induction coil is proportional to the rotation speed of the elastic induction coil. Through the above rotation adjustment method, the technical effect of automatically and gradually reducing the magnetic field change frequency as the inner diameter of the elastic induction coil increases can also be achieved.

[0012] Compared with a circular coil, the special-shaped coil has the disadvantage of uneven heating at different angles; however, since the special-shaped coil of the present device rotates at a high speed while working, it can just perfectly eliminate the defect of uneven heating of the special-shaped coil and smooth out the technical disadvantages brought by using the special-shaped coil.

[0013] Further, the centrifugal converging assembly is annularly and uniformly arranged. The centrifugal converging assembly includes a converging rope and a weight sliding groove. The weight sliding grooves are annularly and uniformly arranged in the sliding guiding mechanism. One end of the converging rope is provided with a sliding buckle, the converging rope is slidably disposed in the adjacent sliding buckle, and the other end of the converging rope is provided with a weight block, and the weight block is slidably disposed in the weight sliding groove.

[0014] When the rotational speed of the counterweight changes, it can apply different magnitudes of tension to the retracting rope, thereby controlling the retracting force of the retracting rope. For the elastic induction coil that is in an unfolded state under free conditions, by changing the retracting force, the folding degree of the elastic induction coil can be adjusted. Through the weight design of the counterweight, the matching parameter between the retracting force of the retracting rope and the rotational speed can be adjusted to a suitable state.

[0015] Preferably, the sliding guiding mechanism includes a magnetically conductive composite frame and a sliding guiding disk. The sliding guiding disk is symmetrically arranged inside the magnetically conductive composite frame. The sliding guiding disk is annularly and uniformly provided with guiding chutes, and the elastic induction coil is annularly and uniformly provided with guiding sliding columns. The guiding sliding columns are engaged and slidably arranged in the guiding chutes.

[0016] As a further preference of the present invention, the weight of the counterweight is greater than the weight of the elastic induction coil. Therefore, when the coil diameter self-adaptive mechanism rotates as a whole, the counterweight can slide towards the outside and reduce the diameter of the elastic induction coil through the retraction of the retracting rope.

[0017] The movement trajectory of the characteristic points on the elastic induction coil can be restricted through the guiding sliding columns. When the retracting force distribution of the retracting rope is uniform, the elastic induction coil can be evenly unfolded and folded.

[0018] Preferably, the brush and the semi-circular extension plate are electrically connected when they are in contact. The elastic induction coil, the brush, the electrode, and the semi-circular extension plate are made of conductive materials, and the remaining parts located inside the magnetically conductive composite frame are all non-metallic materials. The magnetically conductive composite frame has the function of shielding the magnetic field.

[0019] Except for the elastic induction coil, the brush, the electrode, and the semi-circular extension plate, the parts inside the magnetically conductive composite frame are all high-temperature-resistant non-metallic materials, thereby avoiding the situation that these parts also generate induction heating in the magnetic field.

[0020] Furthermore, the coil rotating mechanism further includes a support assembly and a driving assembly. The coil diameter self-adaptive mechanism is arranged in the support assembly, and the magnetically conductive composite frame is driven by the driving assembly.

[0021] Furthermore, a support cooling mechanism is further included. The support cooling mechanism includes a support column and a tetrafluoroethylene plate base, and the support column is arranged on the tetrafluoroethylene plate base.

[0022] Preferably, the support assembly includes a support housing and a bearing. The support housing is arranged on the support column, and the bearing is arranged between the support housing and the magnetically conductive composite frame.

[0023] As a further preference of the present invention, the driving assembly includes a driving motor, a driving gear and a driven gear. The driving gear is arranged on the output shaft of the driving motor. The driven gear is arranged below the magnetic conductor composite frame. The driving gear and the driven gear are in meshing transmission.

[0024] Preferably, the support and cooling mechanism further includes a cooling assembly. The cooling assembly includes a heat dissipation plate. The heat dissipation plate can export the heat at the coil diameter adaptive mechanism and the coil rotation mechanism. A connector is arranged on the heat dissipation plate. The coolant enters the interior of the heat dissipation plate through the connector.

[0025] Most of the heat in the coil diameter adaptive mechanism and the coil rotation mechanism is exported and dissipated to the outside through the cooling assembly, so that the coil diameter adaptive mechanism and the coil rotation mechanism can be maintained within an ideal working temperature range for a long time.

[0026] The beneficial effects achieved by the present invention with the above structure are as follows: (1) By means of the coil rotation, on the one hand, the inner diameter of the elastic induction coil can be dynamically adjusted. On the other hand, the current direction inside the elastic induction coil can also be changed by rotation, creating conditions for the change of the magnetic field direction inside the elastic induction coil.

[0027] (2) The frequency of the current transformation in the elastic induction coil is proportional to the rotation speed of the elastic induction coil. Through the above rotation adjustment method, the technical effect of automatically and gradually reducing the magnetic field transformation frequency as the inner diameter of the elastic induction coil increases can also be achieved.

[0028] (3) Compared with a circular coil, the special-shaped coil has the disadvantage of uneven heating at different angles. However, since the special-shaped coil of the present device rotates at a high speed while working, it can just perfectly eliminate the defect of uneven heating of the special-shaped coil and smooth out the technical disadvantages brought by the adoption of the special-shaped coil.

[0029] (4) When the rotation speed changes, the counterweight can apply different magnitudes of tension to the converging rope, thereby controlling the converging force of the converging rope. For the elastic induction coil that is in an unfolded state in the free state, the folding degree of the elastic induction coil can be adjusted by changing the converging force. By designing the weight of the counterweight, the matching parameter of the converging force of the converging rope and the rotation speed can be adjusted to a suitable state.

[0030] (5) The movement trajectory of the characteristic points on the elastic induction coil can be restricted by the guiding slide posts. When the converging force distribution of the converging rope is uniform, the elastic induction coil can be evenly unfolded and folded.

[0031] (6) Except for the elastic induction coil, brush, electrode and semicircular extension plate, the inside of the magnetic composite frame is made of high-temperature resistant non-metallic materials, thereby preventing these parts from being inductively heated in the magnetic field.

[0032] (7) Most of the heat in the coil diameter adaptive mechanism and the coil rotation mechanism is extracted and dissipated to the outside through the cooling component, so that the coil diameter adaptive mechanism and the coil rotation mechanism can be maintained within an ideal operating temperature range for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a front view of a high-frequency induction hardening coil capable of uniform heating proposed by the present invention; Figure 2 This is a left view of a high-frequency induction hardening coil capable of uniform heating proposed by the present invention; Figure 3 A top view of a high-frequency induction hardening coil capable of uniform heating proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 1 A cross-sectional view along the cutting line BB; Figure 6 for Figure 2 A cross-sectional view along the cutting line CC; Figure 7 A schematic diagram of a half-section structure of a high-frequency induction hardening coil capable of uniform heating proposed by the present invention; Figure 8 for Figure 4 A partial enlarged view of point Ⅰ in the middle; Figure 9 for Figure 7 A partial enlarged view of the middle II; Figure 10 for Figure 6 A partial enlarged view of the middle part III; Figure 11 Schematic diagram of the force direction and electrical connection of the elastic induction coil.

[0034] Among them, 1. Coil diameter adaptive mechanism, 2. Coil rotation mechanism, 3. Support and cooling mechanism, 4. Elastic induction coil, 5. Centrifugal beam convergence assembly, 6. Sliding guiding mechanism, 7. Brush, 8. Guiding slide post, 9. Beam convergence rope, 10. Counterweight, 11. Counterweight sliding groove, 12. Magnetically conductive composite frame, 13. Sliding guiding disk, 14. Sliding buckle, 15. Guiding sliding groove, 16. Electrode, 17. Support assembly, 18. Driving assembly, 19. Semi-circular extension plate, 20. Support housing, 21. Bearing, 22. Driving motor, 23. Driving gear, 24. Driven gear, 25. Support column, 26. Teflon plate base, 27. Cooling assembly, 28. Heat dissipation plate, 29. Connector.

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the description. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0038] As Figures 1 to 10 shown, the present invention provides a high-frequency induction quenching coil capable of uniform heating, which is characterized in that it includes a coil diameter adaptive mechanism 1 and a coil rotation mechanism 2. The coil diameter adaptive mechanism 1 includes an elastic induction coil 4, a centrifugal beam convergence assembly 5 and a sliding guiding mechanism 6. The elastic induction coil 4 is slidably arranged in the sliding guiding mechanism 6, and the centrifugal beam convergence assembly 5 is annularly and evenly arranged in the sliding guiding mechanism 6.

[0039] The coil rotation mechanism 2 includes an electrode 16, and a semi-circular extension plate 19 is arranged on the electrode 16. Two semi-circular extension plates 19 form a ring, and the two semi-circular extension plates 19 do not contact each other.

[0040] By means of the rotation of the coil, on the one hand, the inner diameter of the elastic induction coil 4 can be dynamically adjusted, and on the other hand, the direction of the current inside the elastic induction coil 4 can also be changed by rotation, creating conditions for the change of the magnetic field direction inside the elastic induction coil 4.

[0041] The elastic induction coil 4 has elasticity. When the elastic induction coil 4 is at rest, it has a tendency to automatically unfold. When the elastic induction coil 4 slides along the sliding guide mechanism 6, through the folding and unfolding of the elastic induction coil 4 itself, the inner diameter of the elastic induction coil 4 will also change accordingly; Brushes 7 that are in sliding contact with the semicircular extension plates 19 are symmetrically arranged on the elastic induction coil 4.

[0042] The frequency of the current transformation in the elastic induction coil 4 is directly proportional to the rotation speed of the elastic induction coil 4. Through the above-mentioned rotation adjustment method, the technical effect of automatically and gradually reducing the magnetic field transformation frequency as the inner diameter of the elastic induction coil 4 increases can also be achieved.

[0043] Compared with a circular coil, the special-shaped coil has the disadvantage of uneven heating at different angles; however, since the special-shaped coil of this device rotates at a high speed while working, it can just perfectly eliminate the defect of uneven heating of the special-shaped coil and smooth out the technical disadvantages brought by using the special-shaped coil.

[0044] The centrifugal convergence assembly 5 is arranged in a circumferential and uniform distribution. The centrifugal convergence assembly 5 includes a convergence rope 9 and a counterweight chute 11. The counterweight chutes 11 are arranged in a circumferential and uniform distribution in the sliding guide mechanism 6. One end of the convergence rope 9 is provided with a sliding buckle 14. The convergence rope 9 slides in the adjacent sliding buckles 14. The other end of the convergence rope 9 is provided with a counterweight 10. The counterweight 10 slides in the counterweight chute 11.

[0045] When the rotation speed changes, the counterweight 10 can apply different magnitudes of tension to the convergence rope 9, thereby controlling the convergence force of the convergence rope 9; for the elastic induction coil 4 that is in an unfolded state in the free state, by changing the convergence force, the folding degree of the elastic induction coil 4 can be adjusted; through the weight design of the counterweight 10, the matching parameter of the convergence force of the convergence rope 9 and the rotation speed can be adjusted to a suitable state.

[0046] The sliding guide mechanism 6 includes a magnetically conductive composite frame 12 and a sliding guide disk 13. The sliding guide disks 13 are symmetrically arranged inside the magnetically conductive composite frame 12. Guide chutes 15 are arranged in a circumferential and uniform distribution on the sliding guide disks 13. Guide sliding columns 8 are arranged in a circumferential and uniform distribution on the elastic induction coil 4. The guide sliding columns 8 are engaged and slide in the guide chutes 15.

[0047] The weight of the counterweight 10 is greater than that of the elastic induction coil 4. Therefore, when the coil diameter adaptive mechanism 1 rotates as a whole, the counterweight 10 can slide towards the outside and reduce the diameter of the elastic induction coil 4 by the contraction of the retracting rope 9.

[0048] The movement trajectory of the characteristic points on the elastic induction coil 4 can be restricted by the guiding slide post 8. When the contraction force distribution of the retracting rope 9 is uniform, the elastic induction coil 4 can be evenly unfolded and folded.

[0049] The brush 7 and the semi-circular extension plate 19 are electrically connected when in contact. The elastic induction coil 4, the brush 7, the electrode 16, and the semi-circular extension plate 19 are made of conductive materials, and the rest of the parts located inside the magneto-conductive composite frame 12 are non-metallic materials. The magneto-conductive composite frame 12 has the function of shielding the magnetic field.

[0050] Except for the elastic induction coil 4, the brush 7, the electrode 16, and the semi-circular extension plate 19, the parts inside the magneto-conductive composite frame 12 are all high-temperature-resistant non-metallic materials, so as to avoid the situation that these parts also generate induction heating in the magnetic field.

[0051] The coil rotating mechanism 2 further includes a support assembly 17 and a driving assembly 18. The coil diameter adaptive mechanism 1 is arranged in the support assembly 17, and the magneto-conductive composite frame 12 is driven by the driving assembly 18.

[0052] It further includes a support cooling mechanism 3. The support cooling mechanism 3 includes a support column 25 and a tetrafluoroethylene plate base 26. The support column 25 is arranged on the tetrafluoroethylene plate base 26.

[0053] The support assembly 17 includes a support housing 20 and a bearing 21. The support housing 20 is arranged on the support column 25, and the bearing 21 is arranged between the support housing 20 and the magneto-conductive composite frame 12.

[0054] The driving assembly 18 includes a driving motor 22, a driving gear 23, and a driven gear 24. The driving gear 23 is arranged on the output shaft of the driving motor 22. The driven gear 24 is arranged below the magneto-conductive composite frame 12, and the driving gear 23 and the driven gear 24 are in meshing transmission.

[0055] The support cooling mechanism 3 further includes a cooling assembly 27. The cooling assembly 27 includes a heat dissipation plate 28. The heat dissipation plate 28 can conduct out the heat at the coil diameter adaptive mechanism 1 and the coil rotating mechanism 2. A joint 29 is arranged on the heat dissipation plate 28, and the coolant enters the inside of the heat dissipation plate 28 through the joint 29.

[0056] Most of the heat in the coil diameter adaptive mechanism 1 and the coil rotating mechanism 2 is conducted out and dissipated to the outside through the cooling assembly 27, so that the coil diameter adaptive mechanism 1 and the coil rotating mechanism 2 can be maintained within an ideal working temperature range for a long time.

[0057] As Figure 11 shown, the two electrodes 16 are respectively connected to the positive and negative poles of a DC power supply. The arrows indicate the pulling directions of the counterweight 10 on the converging rope 9 during rotation. The two dashed concentric circles respectively represent the minimum inner diameter and the maximum inner diameter of the elastic induction coil 4. The elastic induction coil 4 is in an unfolded state in its natural state. At this time, the inner diameter of the elastic induction coil 4 is the largest (but not a standard circle). As the converging rope 9 is converged, the elastic induction coil 4 can contract and fold towards the center. At this time, the inner diameter of the elastic induction coil 4 decreases; The two brushes 7 on the elastic induction coil 4 are symmetrically arranged, and the electrodes 16 and the semi-circular extension plates 19 are also symmetrically arranged. Therefore, the two brushes 7 are respectively in contact with different semi-circular extension plates 19 at the same moment. With the electrodes 16 unchanged, the direction of the current in the elastic induction coil 4 alternates.

[0058] During specific use, first, the user needs to place the metal workpiece above the support housing 20 through an external clamping device. The part of the workpiece to be heated is approximately cylindrical. The workpiece and the support housing 20 are coaxially arranged, and the part to be heated is located inside the elastic induction coil 4. The two electrodes 16 are respectively connected to the positive and negative poles of a DC power supply.

[0059] Then, start the drive motor 22. The rotation speed of the drive motor 22 is set according to the diameter of the part of the workpiece to be heated. The larger the diameter of the workpiece, the relatively slower the rotation speed of the drive motor 22; the smaller the diameter of the workpiece, the relatively faster the rotation speed of the drive motor 22. When the drive motor 22 drives the magnetic conductor composite frame 12 to rotate through the meshing transmission of the drive gear 23 and the driven gear 24, the elastic induction coil 4 and the counterweight 10 also rotate accordingly. The elastic induction coil 4 and the counterweight 10 both have a tendency to move outward during rotation. However, due to the larger mass of the counterweight 10, when the counterweight 10 slides in the counterweight chute 11, it can pull the converging rope 9 to converge and overcome the self-elastic force of the elastic induction coil 4 to reduce the outer diameter of the elastic induction coil 4. Due to the guiding and limiting of the guiding chute 15 on the guiding slide post 8, the elastic induction coil 4 can contract and expand evenly. When the outer diameter of the elastic induction coil 4 decreases, the inner diameter of the elastic induction coil 4 will also decrease accordingly until the inner diameter of the elastic induction coil 4 is slightly larger than the part of the workpiece to be heated.

[0060] During the rotation of the elastic induction coil 4, the brushes 7 will also make sliding contact with the semi-circular extension plates 19. Since the direction of the electrodes 16 remains unchanged, a single brush 7 is alternately electrically connected to the two semi-circular extension plates 19, and the two brushes 7 are respectively in contact with different semi-circular extension plates 19 at the same moment. Therefore, when the elastic induction coil 4 is energized, there will be a current inside the elastic induction coil 4, and the direction of the current changes reciprocally.

[0061] When the direction of the current in the elastic induction coil 4 changes reciprocally, the magnetic field generated by the elastic induction coil 4 also changes reciprocally, so that an induced current appears inside the workpiece to be heated, and thus the induction heating of the part to be heated is realized.

[0062] During the heating process, the magnetic conduction composite frame 12 has the function of shielding the magnetic field. Therefore, the inside of the magnetic conduction composite frame 12 is the induction heating area. Among the parts inside the magnetic conduction composite frame 12, except for the elastic induction coil 4, the brush 7, the electrode 16, and the semi-circular extension plate 19 which are made of conductive materials, other parts are all high-temperature resistant non-metallic materials, so as to avoid the situation that these parts also generate induction heating in the magnetic field.

[0063] The heat dissipation plate 28 can conduct out the heat in the coil diameter adaptive mechanism 1 and the coil rotation mechanism 2, and carry it out through the circulating flow of the coolant. The joint 29 can connect the circulating flow system of the coolant.

[0064] After the heating is completed, the workpiece is placed in the quenching liquid through an external clamping device, and the quenching can be completed.

[0065] During the induction heating process, due to the skin effect, the higher the frequency, the shallower the heating depth of the workpiece. Therefore, the larger the diameter and the thicker the thickness of the workpiece, the lower the heating frequency should be to ensure the heating depth; the smaller the diameter and the thinner the thickness of the workpiece, the higher the heating frequency can be to improve the heating efficiency.

[0066] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0067] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the gist of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A high-frequency induction hardening coil capable of uniform heating, characterized in that: It includes a coil diameter adaptive mechanism (1) and a coil rotation mechanism (2). The coil diameter adaptive mechanism (1) includes an elastic induction coil (4), a centrifugal beam - collecting assembly (5) and a sliding guiding mechanism (6). The elastic induction coil (4) is slidably arranged in the sliding guiding mechanism (6), and the centrifugal beam - collecting assembly (5) is annularly and evenly distributed in the sliding guiding mechanism (6). The coil rotation mechanism (2) includes an electrode (16). A semi - circular extension plate (19) is provided on the electrode (16). Two semi - circular extension plates (19) form a ring, and there is no contact between the two semi - circular extension plates (19). The elastic induction coil (4) is elastic. When at rest, the elastic induction coil (4) has a tendency to automatically unfold. When the elastic induction coil (4) slides along the sliding guiding mechanism (6), through the folding and unfolding of the elastic induction coil (4) itself, the inner diameter of the elastic induction coil (4) will change accordingly. Brushes (7) which are in sliding contact with the semi - circular extension plates (19) are symmetrically provided on the elastic induction coil (4). The centrifugal beam - collecting assembly (5) is arranged in an annular and evenly - distributed manner. The centrifugal beam - collecting assembly (5) includes a beam - collecting rope (9) and a counterweight sliding groove (11). The counterweight sliding grooves (11) are annularly and evenly distributed in the sliding guiding mechanism (6). One end of the beam - collecting rope (9) is provided with a sliding buckle (14). The beam - collecting rope (9) is slidably arranged in adjacent sliding buckles (14). The other end of the beam - collecting rope (9) is provided with a counterweight block (10), and the counterweight block (10) is slidably arranged in the counterweight sliding groove (11).

2. The high-frequency induction hardening coil capable of uniform heating according to claim 1, wherein: The sliding guiding mechanism (6) includes a magneto - conductive composite frame (12) and a sliding guiding disk (13). The sliding guiding disks (13) are symmetrically arranged inside the magneto - conductive composite frame (12). Guide sliding grooves (15) are annularly and evenly distributed on the sliding guiding disk (13). Guide sliding columns (8) are annularly and evenly distributed on the elastic induction coil (4), and the guide sliding columns (8) are snap - fitted and slidably arranged in the guide sliding grooves (15).

3. The high-frequency induction hardening coil capable of uniform heating according to claim 2, wherein: The weight of the counterweight block (10) is greater than the weight of the elastic induction coil (4). Therefore, when the whole coil diameter adaptive mechanism (1) rotates, the counterweight block (10) can slide towards the outside and reduce the diameter of the elastic induction coil (4) through the beam - collecting of the beam - collecting rope (9).

4. A high-frequency induction hardening coil capable of uniform heating according to claim 2, characterized in that: The brushes (7) and the semi - circular extension plates (19) are electrically connected when in contact. The elastic induction coil (4), the brushes (7), the electrode (16) and the semi - circular extension plates (19) are made of conductive materials, and the remaining parts located inside the magneto - conductive composite frame (12) are all made of non - metallic materials. The magneto - conductive composite frame (12) has the function of shielding the magnetic field.

5. A high-frequency induction hardening coil capable of uniformly heating according to claim 2, characterized in that: The coil rotation mechanism (2) further includes a support assembly (17) and a drive assembly (18). The coil diameter adaptive mechanism (1) is arranged in the support assembly (17), and the magneto - conductive composite frame (12) is driven by the drive assembly (18).

6. A high-frequency induction hardening coil capable of uniformly heating according to claim 5, characterized in that: It further includes a support cooling mechanism (3), and the support cooling mechanism (3) includes a support column (25) and a tetrafluoroethylene plate base (26), and the support column (25) is arranged on the tetrafluoroethylene plate base (26).

7. A high-frequency induction hardening coil capable of uniformly heating according to claim 6, characterized in that: The support assembly (17) includes a support housing (20) and a bearing (21), the support housing (20) is arranged on the support column (25), and the bearing (21) is arranged between the support housing (20) and the magnetically conductive composite frame (12).

8. A high-frequency induction hardening coil capable of uniformly heating according to claim 7, characterized in that: The driving assembly (18) includes a driving motor (22), a driving gear (23) and a driven gear (24), the driving gear (23) is arranged on the output shaft of the driving motor (22), the driven gear (24) is arranged below the magnetically conductive composite frame (12), and the driving gear (23) and the driven gear (24) are in meshing transmission.

9. The high-frequency induction quenching coil capable of uniform heating according to claim 8, characterized in that: The support cooling mechanism (3) further includes a cooling assembly (27), and the cooling assembly (27) includes a heat dissipation plate (28), and the heat dissipation plate (28) can conduct out the heat at the coil diameter adaptive mechanism (1) and the coil rotation mechanism (2). A joint (29) is arranged on the heat dissipation plate (28), and the coolant enters the interior of the heat dissipation plate (28) through the joint (29).

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