Induction heating equipment capable of simultaneously heating flat anvil die and inner hole die

Abstract

The invention relates to the technical field of mold heating, and discloses induction heating equipment capable of simultaneously heating a flat anvil mold and an inner hole mold, which comprises a hoisting bracket and a flat anvil mold induction heating mechanism and an inner hole mold induction heating mechanism, an upper flat anvil heating disc and a lower flat anvil heating disc are installed at the two ends of the round pipe, the inner hole mold induction heating mechanism comprises a cylinder, a threaded adjusting rod is in threaded connection with the interior of the cylinder, and a hole wall heating barrel and a hole bottom heating disc are installed at the bottom of the threaded adjusting rod; a water circulation cooling mechanism is further arranged outside the hoisting support and comprises a water inlet loop beam. A one-driving-three mode is adopted, induction heating can be safely and efficiently conducted on the flat anvil mold and the inner hole mold, and the problems brought by a traditional method are solved; and cold water can continuously enter the hoisting support and take away heat, so that the working condition can be improved, and the safety of the production environment can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of die heating, and particularly to an induction heating device capable of simultaneously heating a flat anvil die and an inner hole die. Background Art

[0002] High-end forgings not only require accurate temperature of the forgings, but also require accurate initial forging temperature of the forging dies. During forging, the temperature of the dies is required not to be lower than 400 °C. During the forging process of high-end forgings, if the temperature of the flat anvil die and the inner hole die is too low, the temperature of the contact part between the forging and the die will drop rapidly, resulting in a large temperature difference between the inside and outside during the forging process and generating stress, thus causing cracks on the surface of the forging.

[0003] Traditional heating modes for forging dies mainly include the box-type electric heating furnace method and the natural gas flame spraying method. For the box-type electric heating furnace method, the forging die needs to be placed inside the heating furnace. After the forging die is heated to the process requirement temperature, it is then hoisted onto the equipment and installed for forging the forging. For the natural gas flame spraying method, the flame needs to be sprayed on the forging die by manually holding a spray gun for heating.

[0004] However, after the forging die is heated by the above box-type electric heating furnace method, there are huge safety hazards in assembling the forging die in a hot state. Moreover, the above natural gas flame spraying method is difficult to uniformly heat the forging die, and the personnel cost involved is relatively large. Therefore, an induction heating device that can safely and efficiently simultaneously heat a flat anvil die and an inner hole die is needed. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages of huge safety hazards, difficult uniform heating, and large personnel cost in the prior art, and to propose an induction heating device capable of simultaneously heating a flat anvil die and an inner hole die.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An induction heating device capable of simultaneously heating a flat anvil die and an inner hole die, including a lifting bracket and a flat anvil die induction heating mechanism and an inner hole die induction heating mechanism arranged on the lifting bracket. The flat anvil die induction heating mechanism includes a circular tube fixedly connected to the outside of the lifting bracket. Both ends of the circular tube are provided with an upper flat anvil heating plate and a lower flat anvil heating plate formed by winding an induction coil through a fixed beam. The inner hole die induction heating mechanism includes a cylinder fixedly connected to the outside of the lifting bracket. A threaded adjusting rod is threadedly connected inside the cylinder. The bottom of the threaded adjusting rod is provided with a hole wall heating cylinder and a hole bottom heating plate formed by winding an induction coil through a mounting beam;

[0008] An external water circulation cooling mechanism for improving the working environment is also provided on the lifting bracket. The water circulation cooling mechanism includes a water inlet circuit beam fixedly connected to the middle of the lifting bracket.

[0009] The above technical solution further includes:

[0010] A counterweight for maintaining the weight balance on both sides is installed at the top of the lifting bracket. The flat anvil die induction heating mechanism and the inner hole die induction heating mechanism are respectively located on both sides of the lifting bracket. The lifting bracket is integrally lifted and placed by a balance crane.

[0011] An infrared temperature measurement system for monitoring the surface temperature of the flat anvil die and the depth temperature of the inner hole die is installed outside the lifting bracket. The flat anvil die induction heating mechanism and the inner hole die induction heating mechanism both provide alternating current through an IGBTkW power system. The infrared temperature measurement system and the IGBTkW power system are both electrically connected to the PLC automatic control system. The PLC automatic control system can monitor the heating temperature of the die and the operation of the intermediate frequency power supply in real time. When the infrared temperature measurement system senses that the temperature of the die reaches the required heating temperature, it will transmit information through the PLC automatic control system, causing the IGBT600kW power system to reduce power for heat preservation of the die.

[0012] Radial openings are provided on the outer part of the circular tube, and insulating plates are installed on both inner walls of the radial openings. The radial openings and the insulating plates can cut off the magnetic field of the circular tube to prevent the lifting bracket from heating during the heating process.

[0013] The fixed beam includes mounting strips installed at the ends of the circular tube and axially symmetrically distributed. A metal plate is commonly installed on the side of the axially symmetrically distributed mounting strips away from the circular tube. The metal plates at both ends are respectively in close contact with the upper flat anvil heating plate and the lower flat anvil heating plate. The metal plate can quickly transfer the heat of the upper flat anvil heating plate and the lower flat anvil heating plate.

[0014] Two limiting rods slidably connected to the lifting bracket are provided on the outer part of the cylinder. By rotating the threaded adjusting rod, the heights of the hole wall heating cylinder and the hole bottom heating plate can be adjusted according to the depth of the inner hole die.

[0015] The installation beam includes a connecting plate rotatably connected to the bottom of the cylinder and fixedly connected to the bottoms of two limit rods. The bottom of the connecting plate is fixedly connected with an upper metal ring through a connecting rod. The upper metal ring is in close contact with the hole wall heating cylinder. A bottom metal plate is installed at the bottom of the hole wall heating cylinder. The bottom of the bottom metal plate is in close contact with the hole bottom heating plate. A bottom surface sensor for sensing distance is embedded in the middle of the bottom metal plate. The upper metal ring and the bottom metal plate can quickly transfer the heat of the hole wall heating cylinder and the hole bottom heating plate, and the bottom surface sensor can assist the threaded adjusting rod to adjust the heights of the hole wall heating cylinder and the hole bottom heating plate.

[0016] The hoisting bracket includes four support feet for supporting the contact flat anvil die and the inner hole die. A connecting beam A is fixedly connected to a round tube between two of the support feet on one side, and a connecting beam B is fixedly connected to the cylinder between the two support feet on the other side. Return water cavities are provided inside the round tube, the connecting beam A, the connecting beam B, and the four support feet.

[0017] One end of the water inlet circuit beam is communicated with the return water cavity inside the round tube, and the other end of the water inlet circuit beam is communicated with the return water cavities inside the two support feet on this side through two connecting beams. That is, cold water can enter the four support feet through the water inlet circuit beam, the connecting beam A, the round tube, and the connecting beam, so as to prevent the hoisting bracket from heating up, thereby improving the working conditions and ensuring the safety of the production environment.

[0018] The water circulation cooling mechanism further includes two support columns fixedly connected inside the hoisting bracket. The water inlet circuit beam is fixedly connected to the tops of the two support columns. A waterway quick connector connected to the water supply system is installed outside the water inlet circuit beam. The waterway quick connector includes a cold water inlet connector and a hot water outlet connector to realize the circulation use of cold water and hot water inside the hoisting bracket.

[0019] The water circulation cooling mechanism further includes a bottom connecting plate fixedly connected to the bottom of the hoisting bracket. A lower connecting plate is installed below the bottom connecting plate through mounting bolts. A perforation for the water circulation cable to pass through and connect to the waterway quick connector is provided between the bottom connecting plate and the lower connecting plate. The water circulation cable is clamped in the perforation between the bottom connecting plate and the lower connecting plate, and can stably circulate cold and hot water to ensure the stable operation of the water circulation cooling mechanism.

[0020] The present invention has the following beneficial effects:

[0021] 1. By integrating the induction heating mechanism for the flat anvil die and the induction heating mechanism for the inner hole die on both sides of the lifting bracket, the present invention realizes the synchronous heating of the upper flat anvil die, the lower flat anvil die, and the inner hole die in the forging press, overcoming the problems of potential safety hazards in the traditional box-type electric heating furnace method, difficulty in uniform heating with the natural gas flame spraying method, and relatively high personnel costs involved. That is, the present invention adopts a one-drag-three mode, which can safely and efficiently perform induction heating on the flat anvil die and the inner hole die.

[0022] 2. In the present invention, cold water can enter the interiors of the four support feet through the cold water cable, the water inlet circuit beam, the round tube, the connecting beam A, and the communicating beam, and the hot water can be recovered through the hot water cable. That is, cold water can continuously enter the interior of the lifting bracket and carry away heat to improve the working conditions and ensure the safety of the production environment. Moreover, cold water can enter the interior of the connecting beam B through the water inlet circuit beam and the communicating beam to cool the cylinder, so as to prevent the cylinder from being heated and causing damage to the threaded structure on its inner side, which may affect the heating effect of the induction heating mechanism for the inner hole die. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic structural diagram of an induction heating device capable of simultaneously heating a flat anvil die and an inner hole die proposed by the present invention;

[0024] Figure 2 is Figure 1 the front view structural diagram of;

[0025] Figure 3 FIG. is a system connection diagram of an induction heating device capable of simultaneously heating a flat anvil die and an inner hole die proposed by the present invention;

[0026] Figure 4 FIG. is a schematic structural diagram of the lifting bracket in the present invention;

[0027] Figure 5 is Figure 4 the top view structural diagram of;

[0028] Figure 6 FIG. is a schematic structural diagram of the lower flat anvil heating plate in the present invention;

[0029] Figure 7 FIG. is a schematic structural diagram of the hole bottom heating plate in the present invention;

[0030] Figure 8 FIG. is a schematic structural diagram of the bottom surface inductor in the present invention.

[0031] In the figure: 10, lifting bracket; 11, supporting foot; 12, connecting beam A; 13, connecting beam B; 14, communicating beam; 20, flat anvil die induction heating mechanism; 21, round tube; 22, fixed beam; 2a, mounting strip; 2b, metal plate; 23, upper flat anvil heating plate; 24, lower flat anvil heating plate; 25, insulating plate; 30, inner hole die induction heating mechanism; 31, cylinder; 32, threaded adjusting rod; 33, mounting beam; 3a, connecting plate; 3b, connecting rod; 3c, upper metal ring; 3d, bottom metal plate; 3e, bottom surface inductor; 34, hole wall heating cylinder; 35, hole bottom heating plate; limiting rod; 40, water circulation cooling mechanism; 41, water inlet circuit beam; 42, support column; 43, waterway quick connector; 44, bottom connecting plate; 45, lower connecting plate; 46, perforation; 50, counterweight block. Detailed implementation mode

[0032] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] As Figures 1 to 8 shown, an induction heating device capable of simultaneously heating a flat anvil die and an inner hole die proposed by the present invention includes a lifting bracket 10 and a flat anvil die induction heating mechanism 20 and an inner hole die induction heating mechanism 30 provided on the lifting bracket 10. A counterweight block 50 for maintaining the weight balance on both sides is installed at the top of the lifting bracket 10. The flat anvil die induction heating mechanism 20 and the inner hole die induction heating mechanism 30 are respectively located on both sides of the lifting bracket 10. The lifting bracket 10 is integrally lifted and placed by a balance crane. An infrared temperature measurement system for monitoring the surface temperature of the flat anvil die and the depth temperature of the inner hole die is installed outside the lifting bracket 10. The flat anvil die induction heating mechanism 20 and the inner hole die induction heating mechanism 30 both provide alternating current through an IGBT 600kW power system. The infrared temperature measurement system and the IGBT 600kW power system are both electrically connected to the PLC automatic control system. The PLC automatic control system can monitor the heating temperature of the die and the operation of the intermediate frequency power supply in real time;

[0035] The specific structures and connection methods of the balance crane, far-infrared temperature measurement system, IGBT 600kW power supply system, and PLC automatic control system all adopt existing technologies. Therefore, they are not elaborated in this embodiment. When the far-infrared temperature measurement system senses that the temperature of the mold reaches the required heating temperature, it will transmit information through the PLC automatic control system, causing the IGBT 600kW power supply system to reduce power for mold heat preservation. The heating principle of the flat anvil mold induction heating mechanism 20 and the inner hole mold induction heating mechanism 30 is to apply an alternating current to the induction coil, generating an alternating magnetic field in the induction coil. When the mold is placed in the magnetic field, eddy currents will be generated inside it, and the eddy currents are converted into heat energy relying on the resistance of the material, thus achieving the heating effect;

[0036] The flat anvil mold induction heating mechanism 20 includes a circular tube 21 fixedly connected to the outside of the lifting bracket 10. Radial openings are provided on the outside of the circular tube 21, and insulating plates 25 are installed on both inner walls of the radial openings. The radial openings and the insulating plates 25 can block the magnetic field of the circular tube 21 to prevent the lifting bracket 10 from heating during the heating process. Upper flat anvil heating plates 23 and lower flat anvil heating plates 24 formed by winding induction coils are installed at both ends of the circular tube 21 through fixed beams 22. The fixed beam 22 includes mounting strips 2a installed at the ends of the circular tube 21 and axially symmetrically distributed. A metal plate 2b is commonly installed on the side of the axially symmetrically distributed mounting strips 2a away from the circular tube 21. The metal plates 2b at both ends are in close contact with the upper flat anvil heating plate 23 and the lower flat anvil heating plate 24 respectively. The metal plate 2b can quickly transfer the heat of the upper flat anvil heating plate 23 and the lower flat anvil heating plate 24;

[0037] The inner hole mold induction heating mechanism 30 includes a cylinder 31 fixedly connected to the outside of the lifting bracket 10. A threaded adjusting rod 32 is threadedly connected inside the cylinder 31. Two limiting rods 36 slidably connected to the lifting bracket 10 are provided outside the cylinder 31. By rotating the threaded adjusting rod 32, the heights of the hole wall heating cylinder 34 and the hole bottom heating plate 35 can be adjusted according to the depth of the inner hole mold. The bottom of the threaded adjusting rod 32 is provided with a hole wall heating cylinder 34 and a hole bottom heating plate 35 formed by winding induction coils through a mounting beam 33. The mounting beam 33 includes a connecting plate 3a rotatably connected to the bottom of the cylinder 31 and fixedly connected to the bottoms of the two limiting rods 36. A upper metal ring 3c is fixedly connected to the bottom of the connecting plate 3a through a connecting rod 3b. The upper metal ring 3c is in close contact with the hole wall heating cylinder 34. A bottom metal plate 3d is installed at the bottom of the hole wall heating cylinder 34. The bottom of the bottom metal plate 3d is in close contact with the hole bottom heating plate 35. The upper metal ring 3c and the bottom metal plate 3d can quickly transfer the heat of the hole wall heating cylinder 34 and the hole bottom heating plate 35. A bottom surface inductor 3e for sensing distance is embedded in the middle of the bottom metal plate 3d to assist the threaded adjusting rod 32 in adjusting the heights of the hole wall heating cylinder 34 and the hole bottom heating plate 35.

[0038] Working principle of this embodiment: After the hoisting bracket 10 is hoisted and placed at the heating station by the balance crane, ensure that the lower anvil heating plate 24 in the flat anvil die induction heating mechanism 20 is in close contact with the lower anvil die. Subsequently, the bottom surface inductor 3e in the inner hole die induction heating mechanism 30 senses the height of the hole bottom heating plate 35 from the inner hole die, and rotates the threaded adjusting rod 32 so that the mounting beam 33 can drive the hole wall heating cylinder 34 to be located inside the inner hole die and the hole bottom heating plate 35 contacts the inner bottom of the inner hole die. Then, control the forging press to lower the upper anvil die to be in close contact with the upper anvil heating plate 23;

[0039] Subsequently, the PLC automatic control system controls the IGBT 600kW power supply system to apply an alternating current to the induction coils in the upper anvil heating plate 23, the lower anvil heating plate 24, the hole wall heating cylinder 34, and the hole bottom heating plate 35, so that an alternating magnetic field is generated in the induction coils, and the upper anvil die, the lower anvil die, and the inner hole die placed in the magnetic field are heated. During the heating process of the upper anvil die, the lower anvil die, and the inner hole die, the far-infrared temperature measurement system can monitor the surface temperature of the flat anvil die and the depth temperature of the inner hole die;

[0040] When the far-infrared temperature measurement system senses that the die temperature reaches the required heating temperature, it will transmit information through the PLC automatic control system, so that the IGBT 600kW power supply system reduces the power to keep the die warm. Subsequently, the balance crane hoists the entire hoisting bracket 10 away from the heating station, and then the hot forging of the forgings can be carried out.

[0041] The main difference between this embodiment and the prior art is that this embodiment integrates the flat anvil die induction heating mechanism 20 and the inner hole die induction heating mechanism 30 on both sides of the hoisting bracket 10 to achieve synchronous heating of the upper anvil die, the lower anvil die, and the inner hole die in the forging press, overcoming the problems of potential safety hazards in the traditional box-type electric heating furnace method, difficult uniform heating in the natural gas spraying method, and relatively high personnel costs involved. That is, this embodiment adopts a one-drag-three mode, which can safely and efficiently perform induction heating on the flat anvil die and the inner hole die.

[0042] Embodiment Two

[0043] As Figures 1 to 5As shown in the figure, based on the first embodiment, the lifting bracket 10 includes four support feet 11 for supporting the contact flat anvil die and the inner hole die. A connecting beam A12 is fixedly connected to the round tube 21 between the two support feet 11 on one side, and a connecting beam B13 is fixedly connected to the cylinder 31 between the two support feet 11 on the other side. Return water cavities are provided inside the round tube 21, the connecting beam A12, the connecting beam B13 and the four support feet 11. One end of the water inlet circuit beam 41 is communicated with the return water cavity inside the round tube 21, and the other end of the water inlet circuit beam 41 is communicated with the return water cavities inside the two support feet 11 on this side through two connecting beams 14. That is, cold water can enter the four support feet 11 through the water inlet circuit beam 41, the connecting beam A12, the round tube 21 and the connecting beam 14, so as to prevent the lifting bracket 10 from heating up, thereby improving the working conditions and ensuring the safety of the production environment;

[0044] A water circulation cooling mechanism 40 for improving the working environment is further provided outside the lifting bracket 10. The water circulation cooling mechanism 40 includes a water inlet circuit beam 41 fixedly connected to the middle of the lifting bracket 10. The water circulation cooling mechanism 40 further includes two support columns 42 fixedly connected inside the lifting bracket 10. The water inlet circuit beam 41 is fixedly connected to the tops of the two support columns 42. A waterway quick connector 43 connected to the water supply system is installed outside the water inlet circuit beam 41. The specific structure and connection method of the water supply system both adopt the prior art. Therefore, they are not described in detail in this embodiment. The waterway quick connector 43 includes a cold water inlet connector and a hot water outlet connector to realize the circulation use of cold water and hot water inside the lifting bracket 10;

[0045] The water circulation cooling mechanism 40 further includes a bottom connecting plate 44 fixedly connected to the bottom of the lifting bracket 10. A lower connecting plate 45 is installed below the bottom connecting plate 44 through mounting bolts. A perforation 46 for the water circulation cable to pass through and connect to the waterway quick connector 43 is provided between the bottom connecting plate 44 and the lower connecting plate 45. The water circulation cable is clamped in the perforation 46 between the bottom connecting plate 44 and the lower connecting plate 45, and the cold and hot water can circulate stably to ensure the stable operation of the water circulation cooling mechanism 40.

[0046] The working principle of this embodiment: Based on the first embodiment, by passing the cold water cable and the hot water cable in the water supply system through the perforation 46 between the bottom connecting plate 44 and the lower connecting plate 45 and connecting them to the cold water inlet connector and the hot water outlet connector in the waterway quick connector 43 respectively, cold water can enter the inside of the four support feet 11 through the cold water cable, the water inlet circuit beam 41, the round tube 21, the connecting beam A12 and the connecting beam 14, hot water can be recovered through the hot water cable, and cold water can enter the inside of the connecting beam B13 through the water inlet circuit beam 41 and the connecting beam 14 to cool the cylinder 31, so as to prevent the inner thread structure of the cylinder 31 from being damaged due to heat and affecting the heating effect of the inner hole die induction heating mechanism 30.

[0047] The main difference between this embodiment and the prior art is that: in this embodiment, cold water can enter the inside of the four support feet 11 through the cold water cable, the water inlet return beam 41, the round tube 21, the connecting beam A12 and the connecting beam 14, and the hot water can be recovered through the hot water cable. That is, cold water can continuously enter the inside of the lifting bracket 10 and take away heat to improve the working conditions and ensure the safety of the production environment. Moreover, cold water can enter the inside of the connecting beam B13 through the water inlet return beam 41 and the connecting beam 14 to cool the cylinder 31, so as to prevent the cylinder 31 from being damaged due to heat and affecting the heating effect of the inner hole mold induction heating mechanism 30 on its inner side.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An induction heating device capable of simultaneously heating a flat anvil mold and an inner hole mold, comprising a hanging bracket (10) and a flat anvil mold induction heating mechanism (20) and an inner hole mold induction heating mechanism (30) arranged on the hanging bracket (10), characterized in that: The flat anvil mold induction heating mechanism (20) comprises a round tube (21) fixedly connected to the outside of the hanging bracket (10), and an upper flat anvil heating plate (23) and a lower flat anvil heating plate (24) formed by an induction coil are installed at both ends of the round tube (21) through a fixed beam (22); the inner hole mold induction heating mechanism (30) comprises a cylinder (31) fixedly connected to the outside of the hanging bracket (10), a threaded adjustment rod (32) is connected to the inner thread of the cylinder (31), and a hole wall heating cylinder (34) and a hole bottom heating plate (35) formed by an induction coil are installed at the bottom of the threaded adjustment rod (32) through a mounting beam (33); A water circulation cooling mechanism (40) for improving the working environment is also provided outside the hanging bracket (10), and the water circulation cooling mechanism (40) comprises a water inlet circuit beam (41) fixedly connected to the middle part of the hanging bracket (10).

2. The induction heating device capable of simultaneously heating the flat anvil mold and the inner hole mold according to claim 1, characterized in that: A counterweight (50) for maintaining weight balance on both sides is installed on the top of the hanging bracket (10); the flat anvil mold induction heating mechanism (20) and the inner hole mold induction heating mechanism (30) are respectively located on both sides of the hanging bracket (10); and the hanging bracket (10) is hoisted and placed as a whole by a balancing crane; The outside of the lifting bracket (10) is equipped with a far-infrared temperature measurement system for monitoring the surface temperature of the flat anvil mold and the depth temperature of the inner hole mold. The flat anvil mold induction heating mechanism (20) and the inner hole mold induction heating mechanism (30) are both provided with alternating current through the IGBT600kW power supply system. The far-infrared temperature measurement system and the IGBT600kW power supply system are both electrically connected to the PLC automatic control system. The PLC automatic control system can monitor the heating temperature of the mold and the operation of the medium frequency power supply in real time.

3. The induction heating device capable of simultaneously heating the flat anvil mold and the inner hole mold according to claim 1, characterized in that: The outer portion of the circular tube (21) is provided with a radial opening, and both inner walls of the radial opening are provided with insulating plates (25); The fixed beam (22) comprises an axisymmetrically distributed mounting bar (2a) mounted at the end of the circular tube (21); a metal plate (2b) is mounted on the side of the axisymmetrically distributed mounting bar (2a) away from the circular tube (21); the metal plates (2b) at both ends are respectively tightly fitted with an upper flat anvil heating plate (23) and a lower flat anvil heating plate (24).

4. The induction heating device capable of simultaneously heating a flat anvil mold and an inner hole mold according to claim 1, characterized in that: Two limit rods (36) slidably connected to the hanging bracket (10) are arranged outside the cylinder (31); The mounting beam (33) comprises a connecting plate (3a) rotatably connected to the bottom of the cylinder (31) and fixedly connected to the bottoms of two limit rods (36); the bottom of the connecting plate (3a) is fixedly connected to an upper metal ring (3c) via a connecting rod (3b); the upper metal ring (3c) is tightly fitted with a hole wall heating cylinder (34); a bottom metal plate (3d) is installed at the bottom of the hole wall heating cylinder (34); the bottom of the bottom metal plate (3d) is tightly fitted with a hole bottom heating disk (35); and a bottom surface sensor (3e) for sensing distance is embedded in the middle of the bottom metal plate (3d).

5. The induction heating device capable of simultaneously heating a flat anvil mold and an inner hole mold according to claim 1, characterized in that: The hanging bracket (10) comprises four supporting legs (11) for supporting the contact flat anvil mold and the inner hole mold; two supporting legs (11) on one side are fixedly connected to the round tube (21) via a connecting beam A (12); two supporting legs (11) on the other side are fixedly connected to the cylinder (31) via a connecting beam B (13); and a water return chamber is provided inside the round tube (21), the connecting beam A (12), the connecting beam B (13) and the four supporting legs (11).

6. The induction heating device capable of simultaneously heating the flat anvil mold and the inner hole mold according to claim 5, characterized in that: One end of the water inlet return beam (41) is connected to the return water chamber inside the circular tube (21), and the other end of the water inlet return beam (41) is connected to the return water chambers inside the two supporting legs (11) on this side through two connecting beams (14).

7. The induction heating device capable of simultaneously heating a flat anvil mold and an inner hole mold according to claim 1, characterized in that: The water circulation cooling mechanism (40) further comprises two support columns (42) fixedly connected to the inside of the hanging bracket (10), the water inlet return beam (41) fixedly connected to the top of the two support columns (42), and a water quick plug connector (43) connected to a water supply system is installed outside the water inlet return beam (41).

8. The induction heating device capable of simultaneously heating the flat anvil mold and the inner hole mold according to claim 7, characterized in that: The water circulation cooling mechanism (40) further comprises a bottom connecting plate (44) fixedly connected to the bottom of the hanging bracket (10), a lower connecting plate (45) being installed below the bottom connecting plate (44) by means of mounting bolts, and a through hole (46) for the water circulation cable to pass through and connect to the waterway quick plug connector (43) is provided between the bottom connecting plate (44) and the lower connecting plate (45).

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