Induction heating device with workpiece lifting structure

Abstract

The utility model discloses an induction heating device with a workpiece lifting structure, which comprises a fixed base, a top plate arranged at the top end of the fixed base, a lifting platform arranged in the middle of the bottom end of the top plate, an induction coil fixedly mounted at the bottom end of the lifting platform, and a lifting mechanism fixedly mounted in the middle of the top end of the fixed base. According to the induction heating device with the workpiece lifting structure, the lifting mechanism and the lifting air cylinder are arranged, the lifting air cylinder pushes the lifting table from the top, the height of an induction coil installed on the lifting table is adjusted in real time, the lifting mechanism is arranged on the lifting air cylinder, and the lifting mechanism is arranged on the lifting air cylinder and comprises four vertical rods and a sliding table, and pushing shells are connected to the top ends of the four vertical rods in a sliding mode. After the workpiece is clamped and fixed from the two sides by the two clamping plates on the fixing mechanism, the pushing shell slides along the vertical rod and pushes the sliding table from the bottom to adjust the height of the workpiece, the phenomenon that the bottommost part or the bottom of the workpiece is not heated is avoided, and the heating efficiency of the induction heating device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to an induction heating device with a workpiece lifting structure. Background Art

[0002] The induction heating device uses the principle of electromagnetic induction. The high-density magnetic lines of force generated by the induction coil cut the metal material placed in the induction coil, causing eddy currents inside the induction coil, thereby converting electrical energy into thermal energy to achieve heating of the metal material. This heating method has the advantages of high efficiency, energy saving, and environmental protection. It is widely used in metal hot processing, heat treatment, welding, and melting. The basic components of the induction heating device include an induction coil, an AC power supply, and a workpiece. Depending on the different heating objects, the coil can be made into different shapes, and the AC power supply provides the coil with alternating current. The generated alternating magnetic field causes the workpiece to generate eddy currents for heating.

[0003] However, traditional induction heating devices have the following disadvantages:

[0004] A conventional induction heating device heats a workpiece by sliding an induction coil mounted thereon up and down. The up and down sliding range of the induction coil is limited, and it is easy for the very bottom of the workpiece to not be heated, thereby reducing the heating efficiency of the induction heating device. Utility Model Content

[0005] The purpose of the utility model is to provide an induction heating device with a workpiece lifting structure to solve the problem that the traditional induction heating device proposed in the above background technology heats the workpiece by sliding the induction coil installed thereon up and down, and the range of the induction coil sliding up and down is limited, and it is easy for the bottom of the workpiece or the bottom to not be heated, thereby reducing the heating efficiency of the induction heating device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an induction heating device with a workpiece lifting structure, comprising a fixed base, a top plate is provided at the top of the fixed base, a lifting platform is provided in the middle of the bottom end of the top plate, an induction coil is fixedly installed at the bottom end of the lifting platform, and a lifting mechanism is fixedly installed in the middle of the top end of the fixed base, the lifting mechanism comprises four vertical poles and a sliding platform, the top ends of the four vertical poles are slidably connected with a pushing shell, the top ends of the four pushing shells are respectively fixedly connected to the four corners of the bottom end of the sliding platform, the top end of the sliding platform is fixedly installed with a fixing mechanism, the fixing mechanism comprises two limit frames and four displacement rods, the four corners on the opposite sides of the two limit frames are respectively fixedly connected to the two ends of the four displacement rods, the surfaces of the four displacement rods are slidably connected with two displacement blocks, and the top ends of the two displacement blocks are fixedly installed with clamps.

[0007] Preferably, a positioning plate is fixedly installed at the bottom ends between the four vertical rods. Both sides of the top end of the positioning plate are rotatably connected with connecting shells. The top ends of the two connecting shells are both threadedly connected with screw rods. The top ends of the two screw rods are respectively rotatably connected with both sides of the bottom end of the sliding table. A stepping motor is fixedly installed in the middle of the bottom end of the positioning plate. The output end of the stepping motor passes through the positioning plate and is fixedly installed with a rotating shaft. A driving gear is fixedly installed in the middle of the rotating shaft. Driven gears are fixedly installed on the surfaces of the two connecting shells. The outer sides of the two driven gears are both meshed with the outer side of the driving gear. After the stepping motor is powered on and starts, the stepping motor drives the driving gear to rotate. The driving gear contacts the driven gear, and the driven gear rotates due to the frictional force. The driven gear drives the connecting shell to move synchronously. The thread on the inner wall of the connecting shell matches the thread on the surface of the screw rod. Therefore, the connecting shell rotates and lifts relative to the screw rod. And the connecting shell is limited by the positioning plate. So the screw rod pushes the sliding table from the bottom. During the lifting process of the sliding table, it drives the pushing shell to slide along the vertical rod, so as to adjust the height of the workpiece.

[0008] Preferably, assembly plates are fixedly installed at the bottom ends of the four vertical rods. The bottom ends of the four assembly plates are all fixedly connected with the fixed base. The lifting mechanism is installed on the fixed base through the assembly plates.

[0009] Preferably, a plurality of friction pads are fixedly installed on the opposite sides of the two clamping plates. Displacement cylinders are fixedly installed in the middle of the two limiting frames. The movable ends of the two displacement cylinders are respectively fixedly connected with the opposite sides of the two displacement blocks. The displacement cylinder performs telescopic movement. The displacement cylinder pushes the displacement block from one side. The displacement block slides along the displacement rod to improve the stability of the displacement block during sliding. After the displacement block slides, it drives the clamping plate to move synchronously. The clamping plate clamps and fixes the workpiece from both sides. The friction pad is made of rubber material. The setting of the friction pad increases the frictional force between the clamping plate and the workpiece.

[0010] Preferably, the bottom ends of the two limiting frames are both fixedly connected with the side of the sliding table facing it. The fixing mechanism is installed on the sliding table through the limiting frames.

[0011] Preferably, lifting cylinders are fixedly installed on both sides of the top end of the top plate. The movable ends of the two lifting cylinders are respectively fixedly connected with both sides of the top end of the lifting table. The lifting cylinder performs telescopic movement. The lifting cylinder pushes the lifting table from the top to adjust the use height of the induction coil.

[0012] Preferably, height rods are fixedly installed on both sides of the top end of the fixed base. The top ends of the two height rods are respectively fixedly connected to both sides of the bottom end of the top plate. A height block is slidably connected to the middle of each of the two height rods. The opposite sides of the two height blocks are respectively fixedly connected to both sides of the lifting platform. The fixed base is connected to the top plate through the height rods. During the lifting process of the lifting platform, the height block is driven to slide along the height rod, improving the stability of the lifting of the lifting platform.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing a lifting mechanism and a lifting cylinder, the lifting cylinder pushes the lifting platform from the top to adjust the height of the induction coil installed on the lifting platform in real time. After the workpiece is clamped and fixed from both sides by the two clamping plates on the fixing mechanism, the pushing shell slides along the vertical rod and the pushing shell pushes the sliding platform from the bottom to adjust the height of the workpiece, avoiding the phenomenon that the bottom or the lowest part of the workpiece is not heated, and improving the heating efficiency of the induction heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a side view of the present utility model;

[0015] Figure 2 is a side view of the lifting mechanism of the present utility model;

[0016] Figure 3 is a side view of the fixing mechanism of the present utility model;

[0017] Figure 4 is a three-dimensional view of the fixing mechanism of the present utility model.

[0018] In the figure: 1, fixed base; 2, height rod; 3, height block; 4, top plate; 5, lifting cylinder; 6, lifting platform; 7, induction coil; 8, fixing mechanism; 81, limiting frame; 82, displacement cylinder; 83, displacement block; 84, clamping plate; 85, friction pad; 86, displacement rod; 9, lifting mechanism; 901, assembly plate; 902, vertical rod; 903, pushing shell; 904, sliding platform; 905, screw; 906, connecting shell; 907, driven gear; 908, positioning plate; 909, stepping motor; 910, driving gear; 911, rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0020] Please refer to Figures 1-4, the present utility model provides an induction heating device with a workpiece lifting structure, including a fixed base 1. A top plate 4 is provided at the top end of the fixed base 1. A lifting table 6 is provided in the middle of the bottom end of the top plate 4. An induction coil 7 is fixedly installed at the bottom end of the lifting table 6. A lifting mechanism 9 is fixedly installed in the middle of the top end of the fixed base 1. The lifting mechanism 9 includes four vertical rods 902 and a sliding table 904. The top ends of the four vertical rods 902 are all slidably connected with a pushing shell 903. The top ends of the four pushing shells 903 are respectively fixedly connected with the four corners at the bottom end of the sliding table 904. A fixing mechanism 8 is fixedly installed at the top end of the sliding table 904. The fixing mechanism 8 includes two limiting frames 81 and four displacement rods 86. The four corners on the opposite sides of the two limiting frames 81 are respectively fixedly connected with the two ends of the four displacement rods 86. Two displacement blocks 83 are slidably connected to the surfaces of the four displacement rods 86. Clamping plates 84 are fixedly installed at the top ends of the two displacement blocks 83.

[0021] A positioning plate 908 is fixedly installed at the bottom ends between the four vertical rods 902. Both sides of the top end of the positioning plate 908 are rotatably connected with connecting shells 906. Screw rods 905 are threadedly connected to the top ends of the two connecting shells 906. The top ends of the two screw rods 905 are respectively rotatably connected with the two sides at the bottom end of the sliding table 904. A stepping motor 909 is fixedly installed in the middle of the bottom end of the positioning plate 908. The output end of the stepping motor 909 passes through the positioning plate 908 and is fixedly installed with a rotating shaft 911. A driving gear 910 is fixedly installed in the middle of the rotating shaft 911. Driven gears 907 are fixedly installed on the surfaces of the two connecting shells 906. The outer sides of the two driven gears 907 are meshed with the outer side of the driving gear 910. After the stepping motor 909 is powered on and starts, the stepping motor 909 drives the driving gear 910 to rotate. The driving gear 910 contacts the driven gear 907, and the driven gear 907 rotates due to the frictional force. The driven gear 907 drives the connecting shell 906 to perform synchronous movement. The threads on the inner wall of the connecting shell 906 match the threads on the surface of the screw rod 905. Therefore, the connecting shell 906 rotates and lifts relative to the screw rod 905. And the connecting shell 906 is limited by the positioning plate 908. So the screw rod 905 pushes the sliding table 904 from the bottom. During the lifting process of the sliding table 904, it drives the pushing shell 903 to slide along the vertical rod 902, so as to adjust the height of the workpiece.

[0022] Assembly plates 901 are fixedly installed at the bottom ends of the four vertical rods 902. The bottom ends of the four assembly plates 901 are all fixedly connected with the fixed base 1. The lifting mechanism 9 is installed on the fixed base 1 through the assembly plates 901.

[0023] On the opposite sides of the two clamping plates 84, a number of friction pads 85 are fixedly installed. In the middle of the two limiting frames 81, displacement cylinders 82 are fixedly installed. The movable ends of the two displacement cylinders 82 are respectively fixedly connected to the opposite sides of the two displacement blocks 83. The displacement cylinders 82 perform telescopic movements. The displacement cylinders 82 push the displacement blocks 83 from one side. The displacement blocks 83 slide along the displacement rods 86, improving the stability of the sliding of the displacement blocks 83. After the displacement blocks 83 slide, they drive the clamping plates 84 to perform synchronous movements. The clamping plates 84 clamp and fix the workpiece from both sides. The friction pads 85 are made of rubber materials. The establishment of the friction pads 85 increases the friction force between the clamping plates 84 and the workpiece.

[0024] The bottom ends of the two limiting frames 81 are respectively fixedly connected to the opposite sides of the sliding table 904. The fixing mechanism 8 is installed on the sliding table 904 through the limiting frames 81.

[0025] On both sides of the top end of the top plate 4, lifting cylinders 5 are fixedly installed. The movable ends of the two lifting cylinders 5 are respectively fixedly connected to both sides of the top end of the lifting table 6. The lifting cylinders 5 perform telescopic movements. The lifting cylinders 5 push the lifting table 6 from the top to adjust the use height of the induction coil 7.

[0026] On both sides of the top end of the fixed base 1, height rods 2 are fixedly installed. The top ends of the two height rods 2 are respectively fixedly connected to both sides of the bottom end of the top plate 4. In the middle of the two height rods 2, height blocks 3 are slidably connected. The opposite sides of the two height blocks 3 are respectively fixedly connected to both sides of the lifting table 6. The fixed base 1 is connected to the top plate 4 through the height rods 2. During the lifting process of the lifting table 6, the height blocks 3 are driven to slide along the height rods 2, improving the stability of the lifting of the lifting table 6.

[0027] In the use of the embodiment of the present application: The workpiece is placed on the sliding table 904, and the displacement cylinder 82 performs telescopic movement. The displacement cylinder 82 pushes the displacement block 83 from one side, and the displacement block 83 slides along the displacement rod 86 to improve the stability of the displacement block 83 during sliding. After the displacement block 83 slides, it drives the clamping plate 84 to perform synchronous movement. The clamping plate 84 clamps and fixes the workpiece from both sides. The friction pad 85 is made of rubber material, and the setting of the friction pad 85 increases the friction force between the clamping plate 84 and the workpiece. After the stepping motor 909 is powered on, it starts. The stepping motor 909 drives the driving gear 910 to rotate. The driving gear 910 contacts the driven gear 907, and the driven gear 907 rotates due to the friction force. The driven gear 907 drives the connection shell 906 to perform synchronous movement. The thread on the inner wall of the connection shell 906 matches the thread on the surface of the screw rod 905. Therefore, the connection shell 906 rotates and lifts relative to the screw rod 905, and the connection shell 906 is limited by the positioning plate 908. So the screw rod 905 pushes the sliding table 904 from the bottom, and the sliding table 904 drives the pushing shell 903 to slide along the vertical rod 902 during the lifting process to adjust the height of the workpiece. The lifting cylinder 5 performs telescopic movement. The lifting cylinder 5 pushes the lifting table 6 from the top to adjust the use height of the induction coil 7. The induction coil 7 and the workpiece cooperate with each other to complete the heating of the workpiece.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An induction heating device with a workpiece lifting structure, comprising a fixed base (1), characterized in that: The top of the fixed base (1) is provided with a top plate (4), the middle of the bottom of the top plate (4) is provided with a lifting platform (6), the bottom of the lifting platform (6) is fixedly installed with an induction coil (7), the middle of the top of the fixed base (1) is fixedly installed with a lifting mechanism (9), the lifting mechanism (9) comprises four vertical rods (902) and a sliding platform (904), the tops of the four vertical rods (902) are all slidably connected with a driving shell (903), the tops of the four driving shells (903) are respectively connected with the sliding platform (904) and the lifting mechanism (9) is fixedly installed with a lifting mechanism (9) and a sliding platform (904). The four corners at the bottom of the platform (904) are fixedly connected, and a fixing mechanism (8) is fixedly installed at the top of the sliding platform (904). The fixing mechanism (8) includes two limit frames (81) and four displacement rods (86). The four corners on the opposite side of the two limit frames (81) are respectively fixedly connected to the two ends of the four displacement rods (86). The surfaces of the four displacement rods (86) are slidably connected to two displacement blocks (83), and the tops of the two displacement blocks (83) are fixedly installed with clamping plates (84).

2. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: A positioning plate (908) is fixedly installed at the bottom end between the four uprights (902), and both sides of the top end of the positioning plate (908) are rotatably connected with a connecting shell (906), and the top ends of the two connecting shells (906) are threadedly connected with screw rods (905), and the top ends of the two screw rods (905) are respectively rotatably connected to the two sides of the bottom end of the slide platform (904), and a stepping motor (909) is fixedly installed in the middle of the bottom end of the positioning plate (908), and the output end of the stepping motor (909) passes through the positioning plate (908) and is fixedly installed with a rotating shaft (911), and the middle part of the rotating shaft (911) is fixedly installed with a driving gear (910), and the surfaces of the two connecting shells (906) are fixedly installed with driven gears (907), and the outer sides of the two driven gears (907) are meshed and connected with the outer sides of the driving gear (910).

3. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: The bottom ends of the four vertical poles (902) are all fixedly mounted with assembly plates (901), and the bottom ends of the four assembly plates (901) are all fixedly connected to the fixed base (1).

4. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: A plurality of friction pads (85) are fixedly mounted on opposite sides of the two clamping plates (84), a displacement cylinder (82) is fixedly mounted in the middle of the two limit frames (81), and the movable ends of the two displacement cylinders (82) are respectively fixedly connected to opposite sides of the two displacement blocks (83).

5. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: The bottom ends of the two limiting frames (81) are fixedly connected to the side directly opposite to the sliding platform (904).

6. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: Lifting cylinders (5) are fixedly mounted on both sides of the top of the top plate (4), and the movable ends of the two lifting cylinders (5) are respectively fixedly connected to both sides of the top of the lifting platform (6).

7. The induction heating device with a workpiece lifting structure according to claim 1, characterized in that: Height rods (2) are fixedly mounted on both sides of the top of the fixed base (1); the tops of the two height rods (2) are respectively fixedly connected to the two sides of the bottom of the top plate (4); the middle parts of the two height rods (2) are slidably connected to height blocks (3); and the opposite sides of the two height blocks (3) are respectively fixedly connected to the two sides of the lifting platform (6).

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