Induction coil applied to quenching heating

Abstract

The utility model relates to the technical field of heat treatment, in particular to an induction coil applied to quenching heating, which comprises a quenching mechanism, and the quenching mechanism can perform surrounding type water spray quenching on a metal workpiece after induction heating. According to the utility model, the output end of the driving motor drives the straight gear to rotate, then the straight gear drives the gear ring and the cavity ring on one side to rotate around the metal workpiece on the supporting circular ring, and the heating position on the surface of the metal workpiece rotates to spray cooling water, so that the workpiece can be immediately cooled and quenched after being heated; the quenching effect on a workpiece is improved, part of cooling water can flow onto the bottom plate along the surface of the workpiece, cooling water obtained after heat treatment is guided into the recycling box through the drainage holes, then water is recycled through the drainage pipe, and the quenching mechanism can conduct surrounding type movable water spraying cooling on the heating position of the workpiece. And the waste of water resources can be reduced while cooling is conducted in the first time, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically an induction coil used for quenching heating. Background Technology

[0002] Induction heating surface hardening utilizes the principle of electromagnetic induction. A part is placed in an alternating magnetic field, cutting magnetic lines of force to induce a current on its surface. Based on the skin effect of alternating current, eddy currents rapidly heat the surface of the part, followed by rapid cooling. The basic principle is as follows: The workpiece is placed inside an inductor made of copper tubing. An alternating current of a certain frequency is passed through the inductor, generating an alternating magnetic field of the same frequency around it. This induces a current of the same frequency within the workpiece, forming a loop called an eddy current. This eddy current converts electrical energy into heat energy, heating the workpiece. The eddy currents are unevenly distributed within the workpiece, with a high density at the surface and a low density at the core. The higher the frequency of the current flowing through the inductor, the thinner the layer of concentrated eddy currents becomes; this phenomenon is called the skin effect. Due to the skin effect, the workpiece surface is rapidly heated to the hardening temperature, followed by water cooling, thus hardening the surface.

[0003] In practical applications, the two ends of the induction hardening coil are connected to the electrodes of the circuit via busbars to form a loop. The workpiece is then placed inside the induction hardening coil for induction heating and hardening. Currently, after the induction coil used for hardening has finished heating the metal workpiece, it needs to be manually transferred to a cooling container. This not only easily causes workers to be burned, but the heated section of the workpiece cannot be cooled immediately. Since the austenite inside the metal may not be completely transformed into martensite, the hardening effect will be poor, resulting in a decrease in the hardness of the workpiece and a reduction in the production quality of the metal workpiece. Utility Model Content

[0004] The purpose of this invention is to provide an induction coil for quenching heating to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An induction coil for use in quenching heating includes:

[0007] A quenching mechanism is provided, which can perform surrounding water spray quenching after induction heating of metal workpieces. The quenching mechanism includes a support plate, a lifting seat is slidably embedded in the support plate, a fixed plate is fixedly connected to the end of the lifting seat, an induction coil is fixedly installed on the side wall of the fixed plate, a support ring is provided on the top of the induction coil, a cavity ring is fixedly connected to the top of the support ring, a sealing ring is rotatably sleeved in the cavity ring, a water inlet pipe is fixedly connected to the top of the sealing ring, a water valve is fixedly installed outside the water inlet pipe, a connecting seat communicating with the cavity ring is fixedly connected to the inner wall of the cavity ring, two nozzles are fixedly connected to the side wall of the connecting seat, and a protective cover is fixedly sleeved on the outside of the support ring, and the protective cover is fixedly connected to the support plate.

[0008] A support mechanism that supports a metal workpiece when it is heated.

[0009] Furthermore, a servo motor is fixedly connected to the side wall of the support plate, and a lead screw that is rotatably connected to the output end of the servo motor is fixedly connected to the support plate. The lead screw is screwed into the lifting seat.

[0010] Furthermore, the nozzle is angled downwards.

[0011] Furthermore, a toothed ring is fixedly sleeved on the outer wall of the cavity ring, a spur gear is meshed with one side of the toothed ring, and the output end of a drive motor is fixedly connected at the center of the spur gear. The drive motor is fixedly connected to the inner wall of the protective cover.

[0012] Furthermore, the support mechanism includes a base plate fixedly connected to the support plate, and two circular baffles are symmetrically fixedly connected to the top of the base plate. Each of the two circular baffles is slidably connected to a sliding frame, and a clamping plate is fixedly connected to the end of the sliding frame.

[0013] Furthermore, an adjusting screw that is screwed into the circular baffle is rotatably connected to the side wall of the clamping plate.

[0014] Furthermore, the base plate is provided with a plurality of drainage holes at equal intervals in a ring, a recycling box is fixedly connected to the bottom of the base plate, and a discharge pipe is fixedly connected to the side wall of the recycling box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By placing the metal workpiece on the bottom plate and then rotating the adjusting screw, the two clamping plates can be moved closer together. This makes it easier to keep the bottom of the metal workpiece clamped and positioned by the two clamping plates, preventing the workpiece from tipping over during heating and quenching. Then, the output of the servo motor drives the lead screw to rotate, thereby driving the lifting seat and the fixed plate to rise and fall along the side of the support plate. This can drive the induction coil to rise and fall to the heating section of the metal workpiece, thus improving the mobility of the induction coil to a certain extent. After that, when the induction coil is energized, eddy currents are generated inside the workpiece and it is rapidly heated to perform heat treatment on the metal part.

[0017] 2. After the metal workpiece is heated, the water valve can be opened, and cooling water from the inlet pipe is introduced into the cavity ring. Simultaneously, the output of the drive motor drives the spur gear to rotate. The spur gear then drives a toothed ring on one side to rotate around the metal workpiece on the support ring. The cavity ring also drives the nozzles on the connecting seat and side wall to rotate with the cavity ring, and the nozzles are aimed at the surface of the heating section at the coil position. Therefore, cooling water can be sprayed onto the heated area of ​​the metal workpiece surface. This allows for immediate cooling and quenching of the workpiece after heating, improving the quenching effect. Some of the cooling water will flow along the workpiece surface to the bottom plate and be drained through the drain hole into the recovery box. The water is then recycled through the discharge pipe. The quenching mechanism can spray water around the heated area of ​​the workpiece for immediate cooling while reducing water waste and improving the practicality of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall side view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the support mechanism structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the top structure of the induction coil in this utility model;

[0022] Figure 5 This is a schematic diagram of the supporting ring connection structure in this utility model.

[0023] In the diagram: 100, quenching mechanism; 101, support plate; 102, lifting seat; 103, fixing plate; 104, induction coil; 105, lead screw; 106, servo motor; 107, protective cover; 108, support ring; 109, cavity ring; 110, sealing ring; 111, water inlet pipe; 112, water valve; 113, gear ring; 114, spur gear; 115, drive motor; 116, connecting seat; 117, nozzle; 200, support mechanism; 201, base plate; 202, recycling box; 203, discharge pipe; 204, drain hole; 205, circular baffle; 206, clamping plate; 207, sliding frame; 208, adjusting screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5In this embodiment of the present invention, an induction coil for quenching heating includes: a quenching mechanism 100 and a support mechanism 200. The quenching mechanism 100 is capable of performing surrounding water spray quenching after induction heating of a metal workpiece. The quenching mechanism 100 includes a support plate 101, a lifting seat 102 slidably embedded in the support plate 101, a fixing plate 103 fixedly connected to the end of the lifting seat 102, an induction coil 104 fixedly disposed on the side wall of the fixing plate 103, a support ring 108 disposed on the top of the induction coil 104, a cavity ring 109 fixedly connected to the top of the support ring 108, a sealing ring 110 rotatably sleeved in the cavity ring 109, and a water inlet pipe 111 fixedly connected to the top of the sealing ring 110. A water valve 112 is fixedly installed on the outside of the 111. A connecting seat 116 communicating with the inside is fixedly connected to the inner wall of the cavity ring 109. Two nozzles 117 are fixedly connected to the side wall of the connecting seat 116. The output end of the drive motor 115 drives the spur gear 114 to rotate. Then, the spur gear 114 drives the toothed ring 113 on one side and the cavity ring 109 to rotate around the metal workpiece on the support ring 108. The cavity ring 109 will drive the connecting seat 116 and the nozzles 117 on the side wall to rotate with the cavity ring 109. A protective cover 107 is fixedly sleeved on the outside of the support ring 108. The protective cover 107 is fixedly connected to the support plate 101. The support mechanism 200 can support the metal workpiece when it is heated. The nozzles 117 are tilted downwards and are aimed at the heating section surface of the coil. Therefore, they can rotate and spray cooling water on the heating position of the metal workpiece surface. This allows the workpiece to be cooled and quenched immediately after heating, improving the quenching effect of the workpiece. A toothed ring 113 is fixedly sleeved on the outer wall of the cavity ring 109. A spur gear 114 is meshed with one side of the toothed ring 113. The output end of the drive motor 115 is fixedly connected at the center of the spur gear 114. The drive motor 115 is fixedly connected to the inner wall of the protective cover 107.

[0026] Specifically, after the metal workpiece is heated, the water valve 112 is opened, and cooling water in the water inlet pipe 111 is introduced into the cavity ring 109. Simultaneously, the output of the drive motor 115 drives the spur gear 114 to rotate. The spur gear 114 then drives the toothed ring 113 on one side to rotate around the metal workpiece on the support ring 108, along with the cavity ring 109. The cavity ring 109 also drives the connecting seat 116 and the nozzle 117 on the side wall to rotate with the cavity ring 109. The nozzle 117 is aligned with the heating section surface at the coil position, thus heating the metal workpiece. The workpiece surface is rotated and sprayed with cooling water, which allows for immediate cooling and quenching of the workpiece after heating, improving the quenching effect. Some of the cooling water flows along the workpiece surface onto the bottom plate 201, and is then guided into the recovery box 202 through the drain hole 204. The water is then recycled through the discharge pipe 203. The quenching mechanism 100 can spray water around the workpiece heating position, which can cool it immediately while reducing water waste and improving the practicality of the equipment.

[0027] Example 1

[0028] like Figure 2-3 As shown, in this embodiment, a servo motor 106 is fixedly connected to the side wall of the support plate 101. A lead screw 105, rotatably connected to the support plate 101, is fixedly connected to the output end of the servo motor 106. The lead screw 105 is screwed into the lifting seat 102. The support mechanism 200 includes a base plate 201 fixedly connected to the support plate 101. Two circular baffles 205 are symmetrically fixedly connected to the top of the base plate 201. A sliding frame 207 is slidably connected to each of the two circular baffles 205. A clamping plate 206 is fixedly connected to the end of the sliding frame 207. By rotating the adjusting screw 208, the two clamping plates 206 can be moved closer together, thus facilitating the clamping and positioning of the bottom end of the metal workpiece through the two clamping plates 206, preventing the workpiece from tipping over during heating and quenching. An adjusting screw 208, screwed into the circular baffle 205, is rotatably connected to the side wall of the clamping plate 206. Multiple drainage holes 204 are equidistantly arranged in a ring on the base plate 201. A recycling box 202 is fixedly connected to the bottom of the base plate 201, and a discharge pipe 203 is fixedly connected to the side wall of the recycling box 202.

[0029] In this embodiment, by placing the metal workpiece on the base plate 201 and then rotating the adjusting screw 208, the two clamping plates 206 are moved closer together. This facilitates the clamping and positioning of the bottom end of the metal workpiece by the two clamping plates 206, preventing the workpiece from tipping over during heating and quenching. Then, the output end of the servo motor 106 drives the lead screw 105 to rotate, thereby driving the lifting seat 102 and the fixing plate 103 to be raised and lowered along the side of the support plate 101. This can drive the induction coil 104 to be raised and lowered to the heating section of the metal workpiece, thus improving the mobility of the induction coil 104 to a certain extent. After that, the induction coil 104 is energized, and eddy currents are generated inside the workpiece, which are rapidly heated to heat the metal part.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An induction coil for quenching heating, characterized by, Include: Quenching mechanism (100), quenching mechanism (100) can be around the induction heating of metal workpiece after water spray quenching, quenching mechanism (100) includes support plate (101), support plate (101) on the sliding embedded with lifting seat (102), the end of lifting seat (102) is fixedly connected with fixed plate (103), the side wall of fixed plate (103) is fixedly provided with induction coil (104), the top of induction coil (104) is provided with support ring (108), the top of support ring (108) is fixedly connected with cavity ring (109), cavity ring (109) is rotatably sleeved with sealing ring (110), the top of sealing ring (110) is fixedly connected with water inlet pipe (111), the outside of water inlet pipe (111) is fixedly provided with water valve (112), the inner wall of cavity ring (109) is fixedly connected with communication seat (116) communicated with its inside, the side wall of communication seat (116) is fixedly connected with two spray heads (117), the outside of support ring (108) is fixedly sleeved with protective cover (107), the protective cover (107) is fixedly connected with support plate (101); Support mechanism (200), support mechanism (200) can support the metal workpiece when it is heated.

2. An induction coil for quenching heating according to claim 1, characterized in that, The side wall of support plate (101) is fixedly connected with servo motor (106), the output end of servo motor (106) is fixedly connected with screw rod (105) rotatably connected with support plate (101), screw rod (105) is screw connected with lifting seat (102).

3. The induction coil for quenching heating according to claim 1, wherein The angle of spray head (117) is inclined downward.

4. The induction coil for quenching heating according to claim 1, wherein The outer wall of cavity ring (109) is fixedly sleeved with gear ring (113), one side of gear ring (113) is meshed with spur gear (114), the output end of driving motor (115) is fixedly connected with spur gear (114) at the center position, driving motor (115) is fixedly connected with the inner wall of protective cover (107).

5. An induction coil for quenching heating according to claim 4, characterized in that Support mechanism (200) includes bottom plate (201) fixedly connected with support plate (101), two circular baffles (205) are fixedly connected on the top of bottom plate (201), two circular baffles (205) are slidably connected with sliding frame (207), the end of sliding frame (207) is fixedly connected with clamping plate (206).

6. An induction coil for quenching heating according to claim 5, characterized in that The side wall of clamping plate (206) is rotatably connected with adjusting screw (208) screw connected with circular baffle (205).

7. An induction coil for quenching heating according to claim 5, wherein A plurality of drainage holes (204) are arranged on the bottom plate (201) in a circular and equidistant manner, the bottom plate (201) is fixedly connected with recovery box (202), the side wall of recovery box (202) is fixedly connected with discharge pipe (203).

Images