A fork-shaped end local induction hardening device

Abstract

This invention discloses a device for local induction hardening of fork-shaped ends, used for local induction heating of fork-shaped ends. It is characterized by comprising a base frame, and further comprising a moving component, a clamping component, a heat exchange component, an induction heating component, and a gripping component mounted on the base frame. The clamping component is mounted on the moving component, and the heat exchange component, induction heating component, and gripping component are distributed on the base frame. This invention belongs to the field of fork-shaped end processing technology, specifically referring to a device for local induction hardening of fork-shaped ends. This invention improves the hardness and performance of localized areas of the fork-shaped end by utilizing local induction hardening, thereby enhancing the wear resistance of the fork-shaped end surface.

Description

Technical Field

[0001] This invention belongs to the field of fork-shaped end processing technology, specifically referring to a fork-shaped end local induction hardening device. Background Technology

[0002] When it comes to electrical connections, fork-shaped terminals typically refer to a connector design where the ends are forked. This design aims to provide better electrical contact and connection stability. Fork-shaped terminals are commonly used in receptacle or connector designs to accommodate and securely connect wires. The advantages of this design include: 1. Good electrical contact: The fork-shaped terminal design allows for a larger contact surface area, thus providing a better electrical connection. This helps reduce resistance and minimizes energy loss as current flows. 2. Compatibility with different wire sizes: Due to their design, fork-shaped terminals can typically accommodate wires of different sizes and specifications, providing greater flexibility. 3. Connection stability: Because fork-shaped terminals form a strong physical connection when inserted into a receptacle or connector, they are more stable than other connectors and can withstand a certain amount of physical stress and vibration.

[0003] However, fork-type terminals currently have the following problems in use: In electrical connectors, especially fork-type terminals, frequent use of plugging, unplugging, contacting and disconnecting connections may cause wear on the terminal surface. As wear increases, the electrical contact on the terminal surface may deteriorate, leading to increased resistance and affecting the current conduction efficiency. Wear may also cause changes in the shape of the terminal, making the connection between the socket and the connector less secure, or even causing poor connection or disconnection. Long-term wear may reduce the durability of the fork-type terminals, thereby shortening their service life. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a local induction hardening device for fork-shaped ends. By using local induction hardening, the hardness and performance of local areas of the fork-shaped ends are improved, thereby enhancing the wear resistance of the fork-shaped ends surface.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a fork-shaped end local induction hardening device for local induction heating of electrical connector pins, including a base frame and a moving component mounted on the base frame. The moving component includes a linear motor mounted on the base frame, and a moving plate is mounted on the linear motor.

[0006] A clamping assembly is mounted on the movable assembly. The clamping assembly includes an air jet groove mounted on the movable plate. The inner wall of the air jet groove is provided with air jet holes. The air jet groove is provided with mounting holes, and an electrical connector pin is installed in the mounting holes.

[0007] A heat exchange assembly is mounted on the base frame. The heat exchange assembly includes a gas heat exchange tank mounted on the base frame. The output end of the gas heat exchange tank is connected to the jet duct, and the input end of the gas heat exchange tank is connected to a gas pump.

[0008] An induction heating assembly is mounted on the base frame. The induction heating assembly includes a first support frame on the base frame. An induction power supply is mounted on one side of the first support frame. The induction power supply is a high-frequency AC power supply. An induction heating rod is mounted on the output end of the induction power supply.

[0009] A clamping assembly is mounted on the base frame. The clamping assembly includes a second support frame mounted on the base frame, a first fixing plate mounted on the second support frame, a clamping device mounted on the first fixing plate, and a first sliding cylinder mounted on the fixing plate. A second fixing plate is mounted on the first sliding cylinder, a first sliding shaft is slidably mounted inside the first sliding cylinder, and a clamping frame is rotatably mounted on the first sliding shaft. A clamping head is mounted at one end of the clamping frame, and a first water pump is connected to the input end of the clamping head. A second air pump is also mounted on the first fixing plate, and the output end of the second air pump is connected to the clamping frame.

[0010] Furthermore, the jet trough is equipped with a gas flow channel for circulating hot gas, and a connecting pipe is installed on one side of the jet trough. The connecting pipe is connected to the gas flow channel, and a first gas delivery pipe is connected between the connecting pipe and the heat exchange tube for transmitting the hot gas output from the gas heat exchange tank.

[0011] Furthermore, the induction heating rod includes a rod body installed at the output end of the induction power supply, and a protective sleeve is installed on the outside of the rod body.

[0012] Furthermore, the clamping head has a water channel inside, one end of which is connected to an inlet channel, and the other end of which is connected to a jet hole for spraying water to locally cool the connector pins.

[0013] Furthermore, the heat exchange tank is equipped with an air inlet and an air outlet, and a heat exchange tube is installed inside the heat exchange tank for heating the incoming hot air.

[0014] Furthermore, a second gas delivery pipe is provided between the gas pump and the heat exchange tank for transmitting the gas output by the gas pump into the heat exchange tank.

[0015] Furthermore, a magnetic conductor is installed at the end of the rod to concentrate and guide the direction of magnetic flux.

[0016] Furthermore, the end of the rod is U-shaped, the rod is made of a single-turn copper tube, and the magnetic conductor is made of ferrite material.

[0017] The beneficial effects achieved by the present invention using the above structure are as follows:

[0018] (1) The fork-shaped end local induction hardening device provided in this solution is designed with a moving component and a moving motor to quickly process the parts that need to be processed, thus saving efficiency.

[0019] (2) The fork-shaped end local induction hardening device provided in this solution is designed with clamping components to quickly clamp the fork-shaped end through the mounting holes, thereby ensuring the clamping quality and making installation convenient.

[0020] (3) The fork-shaped end local induction hardening device provided in this solution can quickly and efficiently heat the gas by designing heat exchange components and heat exchange tubes, and ensure heating efficiency.

[0021] (4) The fork-shaped end local induction hardening device provided in this solution can quickly clamp the workpiece by designing the clamping components, and at the same time use pneumatic means to achieve efficient output and ensure clamping quality.

[0022] (5) The fork-shaped end local induction quenching device provided in this solution, by designing an induction heating component, and then by combining an induction heating rod and a magnetic conductor, can efficiently perform local induction heating on the fork-shaped end, while rapidly cooling the fork-shaped end by spraying water through the clamping head, thus ensuring the quenching quality. Attached Figure Description

[0023] Figure 1 A schematic diagram of the main structure of a fork-shaped end local induction hardening device provided by the present invention;

[0024] Figure 2 This invention provides a moving component for a fork-shaped end local induction hardening device.

[0025] Figure 3 A schematic diagram of the air jet groove structure of a fork-shaped end local induction hardening device provided by the present invention;

[0026] Figure 4 A schematic diagram of the internal structure of the jet groove in a fork-shaped end local induction hardening device provided by the present invention;

[0027] Figure 5 A structural diagram of the induction heating rod of a fork-shaped end local induction hardening device provided by the present invention;

[0028] Figure 6 for Figure 5 A magnified view of part A in the image;

[0029] Figure 7 A schematic diagram of the main structure of the magnetic conductor provided by this invention;

[0030] Figure 8 A structural diagram of the clamping assembly provided by the present invention;

[0031] Figure 9 This is a structural diagram of the clamping head provided by the present invention;

[0032] Figure 10 A schematic diagram of the first water pump installation structure of a fork-shaped end local induction hardening device provided by the present invention;

[0033] Figure 11 Internal structure diagram of the clamping assembly of the fork-shaped end local induction hardening device provided by the present invention;

[0034] Figure 12 This is a structural diagram of the internal structure of the gas heat exchanger provided by the present invention;

[0035] Figure 13 This is a top view of a fork-shaped end local induction hardening device provided by the present invention.

[0036] Among them, 1. Base frame, 2. Linear motor, 201. Moving plate, 3. Jet duct, 301. Jet hole, 302. Mounting hole, 303. Gas flow channel, 304. Connecting pipe, 4. Fork-shaped end, 5. Heat exchange assembly, 501. Gas heat exchange tank, 5011. Inlet, 5012. Outlet, 5013. Heat exchange tube, 502. Air pump, 503. Second gas supply pipe, 6. Induction heating assembly, 601. First support frame, 602. Induction power supply, 603. Induction heating element. Heating rod, 6031, rod body, 6032, protective sleeve, 6033, magnetic conductor, 7, clamping assembly, 701, second support frame, 702, first fixing plate, 703, clamp, 7031, first sliding cylinder, 7032, second fixing plate, 7033, first sliding shaft, 7034, clamping frame, 7035, clamping head, 70351, water channel, 70352, inlet channel, 70353, jet hole, 704, first water pump, 705, second air pump.

[0037] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Specific implementation examples:

[0041] Overall structure:

[0042] like Figures 1-13 As shown, the present invention provides a fork-shaped end local induction hardening device for local induction heating of a fork-shaped end 4. It includes a base frame 1 and a moving assembly mounted on the base frame 1. The moving assembly includes a linear motor 2 mounted on the base frame 1, and a moving plate 201 mounted on the linear motor 2. A clamping assembly is mounted on the moving assembly, and the clamping assembly includes an air jet groove 3 mounted on the moving plate 201. The inner wall of the air jet groove 3 is provided with air jet holes 301, and an air jet groove 3 is equipped with... There is a mounting hole 302, in which a fork-shaped end 4 is installed; a heat exchange assembly 5 is mounted on the base frame 1, the heat exchange assembly 5 includes a gas heat exchange tank 501 mounted on the base frame 1, the output end of the gas heat exchange tank 501 is connected to the jet duct 3, and the input end of the gas heat exchange tank 501 is connected to an air pump 502; an induction heating assembly 6 is mounted on the base frame 1, the induction heating assembly 6 includes a first support frame 601 on the base frame 1, the first support frame 601... An inductive power supply 602 is mounted on the side. The inductive power supply 602 is a high-frequency AC power supply, and the inductive power supply 602 is electrically connected to an inductive heating rod 603. A clamping assembly 7 is mounted on the base frame 1. The clamping assembly 7 includes a second support frame 701 mounted on the base frame 1. A first fixing plate 702 is mounted on the second support frame 701. A clamp 703 is mounted on the first fixing plate 702. The clamp 703 includes a first... A sliding cylinder 7031 is provided, and a second fixing plate 7032 is mounted on the first sliding cylinder 7031. A first sliding shaft 7033 is slidably disposed inside the first sliding cylinder 7031. A clamping frame 7034 is provided on the first sliding shaft 7033. A clamping head 7035 is mounted on one end of the clamping frame 7034. A first water pump 704 is connected to the input end of the clamping head 7035. A second air pump 705 is also mounted on the first fixing plate 702. The output end of the second air pump 705 is connected to the clamping frame 7034.

[0043] Jet Trough 3:

[0044] like Figure 3 , Figure 4 and Figure 12 As shown, the jet trough 3 is equipped with a gas flow channel 303, which is connected to the jet hole 301 for the flow of hot gas. A connecting pipe 304 is installed on one side of the jet trough 3, which is connected to the gas flow channel 303. A first gas delivery pipe is connected between the connecting pipe 304 and the heat exchange tube 5013 for the transmission of hot gas output from the gas heat exchange tank 501.

[0045] Induction heating rod 603:

[0046] like Figures 5-7 As shown, the induction heating rod 603 includes a rod body 6031 installed at the output end of the induction power supply 602. A protective sleeve 6032 is installed on the outside of the rod body 6031. A magnetic conductor 6033 is installed at the end of the rod body 6031 for concentrating and guiding the direction of magnetic flux. The end of the rod body 6031 has a U-shaped design. The rod body 6031 is made of a single-turn copper tube, and the magnetic conductor 6033 is made of ferrite material.

[0047] The magnetic conductor 6033 has an open design, and the current density will change under the action of the slot of the magnetic material, showing a hyperbolic decay towards the bottom of the slot. The current density is the largest at the slot opening. Secondly, after the magnetic conductor 6033 is installed on the rod 6031, most of the magnetic flux will be concentrated inside the magnetic conductor 6033, thereby locally induction heating the fork-shaped end 4.

[0048] Quenched structure:

[0049] like Figure 8 and Figure 9 As shown, the clamping head 7035 has a water channel 70351 inside. One end of the water channel 70351 is connected to an inlet channel 70352, and the other end of the water channel 70351 is connected to a jet hole 70353, which is used to spray water to locally cool the fork-shaped end head 4, thereby completing the quenching.

[0050] Other structures:

[0051] like Figure 12 and Figure 13 As shown, the gas heat exchange tank 501 is equipped with an air inlet 5011 and an air outlet 5012. The gas heat exchange tank 501 is equipped with a heat exchange tube 5013 for heating the incoming hot gas. A second gas delivery pipe 503 is connected between the gas pump 502 and the gas heat exchange tank 501 for transmitting the gas output by the gas pump 502 into the gas heat exchange tank 501.

[0052] In practical use:

[0053] The linear motor 2 drives the jet chute 3 to move via the moving plate 201, fixing the fork-shaped end 4 onto the mounting hole 302.

[0054] Gas is pumped by air pump 502 and delivered to the inlet duct 5011 through the second gas delivery pipe 503, and then enters the gas heat exchange tank 501. The heat exchange pipe 5013 is equipped with heat flow, which heats the incoming gas, turning it into high-temperature gas with a temperature of 450°C. The hot gas is then output through the outlet duct 5012.

[0055] The hot gas is delivered into the connecting pipe 304 and then into the gas flow channel 303. The hot gas is output through the jet hole 301. The hot gas preheats the fork end 4, which can reduce the thermal stress inside the fork end 4.

[0056] Subsequently, the fork-shaped end 4 is locally induction heated by the induction heating component 6. The induction power supply 602 outputs alternating current to the induction heating rod 603. The rod body 6031 is made of a single-turn copper tube, and the magnetic conductor 6033 is made of ferrite material. When high-frequency alternating current is passed through the rod body 6031, a changing magnetic field is generated around it. According to Faraday's law of electromagnetic induction, eddy currents will be generated on the surface of the workpiece. The magnetic conductor 6033 has a certain opening, which concentrates the current passing through the copper tube on the side close to the workpiece. The intensity of the eddy currents generated on the surface of the workpiece will be greatly improved compared with the case where no magnetic conductor is added. Due to the resistance of the workpiece itself, according to Joule's law, the workpiece will be heated due to the Joule heating effect. At the same time, according to the skin effect, the eddy currents will be concentrated on the surface of the workpiece, thereby heating the workpiece.

[0057] Subsequently, the heated fork-shaped end 4 is clamped and cooled using the clamping assembly 7. The second air pump 705 drives the first sliding shaft 7033 to move within the first sliding cylinder 7031, thereby causing the clamping frame 7034 to rotate on the second fixed plate 7032 and the first sliding shaft 7033. Then, the symmetrical clamping heads 7035 on both sides clamp the fork-shaped end 4.

[0058] While being clamped, the first water pump 704 operates, inputting water into the inlet channel 70352 through the water pipe. At the same time, the water enters the water channel 70351 and is output through the jet hole 70353. The water then contacts the surface of the high-temperature fork-shaped end 4 to cool it down and complete the quenching.

[0059] The specific principle is as follows: the surface of the workpiece is rapidly heated to a temperature above the critical temperature of austenite. After the surface structure completes the austenitic transformation, the workpiece is rapidly cooled, thereby obtaining a martensitic structure with high hardness and high wear resistance on the surface, achieving the purpose of surface strengthening.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0062] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for local induction hardening of fork-shaped ends, used for local induction heating and hardening of fork-shaped ends, characterized in that, Including the base frame, and also A moving component is mounted on the base frame, the moving component including a linear motor mounted on the base frame, and a moving plate mounted on the linear motor; A clamping assembly is mounted on the movable assembly. The clamping assembly includes an air jet groove mounted on the movable plate. The inner wall of the air jet groove is provided with air jet holes. The air jet groove is provided with mounting holes. A fork-shaped end is installed in the mounting holes. A heat exchange assembly is mounted on the base frame. The heat exchange assembly includes a gas heat exchange tank mounted on the base frame. The output end of the gas heat exchange tank is connected to the jet duct, and the input end of the gas heat exchange tank is connected to a gas pump. An induction heating assembly is mounted on the base frame. The induction heating assembly includes a first support frame mounted on the base frame. An induction power supply is mounted on one side of the first support frame. The induction power supply is a high-frequency AC power supply. The induction power supply is electrically connected to an induction heating rod. A clamping assembly is mounted on the base frame. The clamping assembly includes a second support frame mounted on the base frame, a first fixing plate mounted on the second support frame, a clamping device mounted on the first fixing plate, and a first sliding cylinder mounted on the first fixing plate. A second fixing plate is mounted on the first sliding cylinder, a first sliding shaft is slidably mounted inside the first sliding cylinder, and a clamping frame is rotatably mounted on the first sliding shaft. A clamping head is mounted at one end of the clamping frame, and a first water pump is connected to the input end of the clamping head. A second air pump is also mounted on the first fixing plate, and the output end of the second air pump is connected to the clamping frame. A water channel is provided inside the clamping head, one end of which is connected to an inlet channel, and the other end of which is connected to a jet hole for spraying water to locally cool the fork-shaped end. A water pipe is connected between the first water pump and the inlet channel.

2. The fork-shaped end local induction hardening device according to claim 1, characterized in that, The jet trough is equipped with a gas flow channel, which is connected to the jet hole for the flow of hot gas. A connecting pipe is installed on one side of the jet trough, which is connected to the gas flow channel. A first gas delivery pipe is connected between the connecting pipe and the gas heat exchange tank for the transmission of hot gas output from the gas heat exchange tank.

3. The fork-shaped end local induction hardening device according to claim 2, characterized in that, The induction heating rod includes a rod body installed at the output end of the induction power supply, and a protective sleeve is installed on the outside of the rod body.

4. The fork-shaped end local induction hardening device according to claim 3, characterized in that, The gas heat exchange tank is equipped with an air inlet and an air outlet, and a heat exchange tube is installed inside the gas heat exchange tank for heating the incoming hot gas.

5. The fork-shaped end local induction hardening device according to claim 4, characterized in that, A second gas delivery pipe is provided between the gas pump and the gas heat exchange tank for transmitting the gas output from the gas pump into the gas heat exchange tank.

6. The fork-shaped end local induction hardening device according to claim 5, characterized in that, The end of the rod is equipped with a magnetic conductor for concentrating and guiding the direction of magnetic flux.

7. The fork-shaped end local induction hardening device according to claim 6, characterized in that, The end of the rod is U-shaped.

8. The fork-shaped end local induction hardening device according to claim 7, characterized in that, The rod is made of a single-turn copper tube.

9. A fork-shaped end local induction hardening device according to claim 8, characterized in that, The magnetic conductor is made of ferrite material.

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