KR20060009990A - A method for making the induction heating-coil and it's equipment - Google Patents

Abstract

The present invention relates to a method of manufacturing an induction heating coil and a manufacturing apparatus thereof, and more particularly, to generate induction electricity to perform high frequency heating to remove the coating of the coil and then to completely remove the foreign material, thereby compressing the terminal, thereby reducing the resistance and conductivity. It produces excellent induction heating coils and automatically repeats the manufacturing process by simply operating the control panel, making the work process simpler, improving productivity, equalizing product quality, and improving and automating harmful processes. And it relates to an environmentally friendly induction heating coil manufacturing method and a manufacturing apparatus thereof.

High Frequency Induction Heater, Presser, Caulking, Mold, Winding, Guide

Description

Induction heating coil manufacturing method and its manufacturing apparatus {A METHOD FOR MAKING THE INDUCTION HEATING-COIL AND IT'S EQUIPMENT}

1 is a flow chart showing a method for manufacturing an induction heating coil, according to an embodiment of the present invention.

Figure 2 is a front view showing an induction heating coil manufacturing apparatus, according to a preferred embodiment of the present invention.

3 is a plan view showing an induction heating coil manufacturing apparatus according to an embodiment of the present invention.

Figure 4 is a plan view showing a caulking portion of the induction heating coil manufacturing apparatus, according to an embodiment of the present invention.

Figure 5 is a side view showing a mold portion of the induction heating coil manufacturing apparatus, according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

10: induction heating coil manufacturing apparatus of the present invention

12: frame 14: motor

16: control panel 18: coil

19: Coil transfer guide 20: High frequency induction heater

22: compressed air injector 24: caulking unit

26: finger 27: cutting machine

28: terminal 30: feeder

32: press 34: caulking cylinder

36: robot 38: guide

40: mold part 42: mold cylinder

44a: upper mold 44b: lower mold

46: groove 48: cooling unit

50a: upper terminal clamp 50b: lower terminal clamp

The present invention relates to a method of manufacturing an induction heating coil and a manufacturing apparatus thereof, and more particularly, to generate induction electricity to perform high frequency heating to remove the coating of the coil and then to completely remove the foreign material, thereby compressing the terminal, thereby reducing the resistance and conductivity. It produces excellent induction heating coils and automatically repeats the manufacturing process by simply operating the control panel, making the work process simpler, improving productivity, equalizing product quality, and improving and automating harmful processes. And it relates to an environmentally friendly induction heating coil manufacturing method and a manufacturing apparatus thereof.

Induction Heating (Induction Heating) is a method in which eddy currents flow when the magnetic force lines generated from the induction heating coil pass through the conductor vessel so that the entire conductor vessel is heated.

The IH method is mainly used for electric rice cookers and IH electric stoves. In the conventional hot plate heating method, heat is applied only at the bottom of the container, but since the product applied with the IH method is evenly transmitted to the stainless oven using an induction current, The IH method of heating the coil by forming a magnetic field is preferred.

The conductors are mainly copper or aluminum with high conductivity. For large electrical equipment, flat ones are used. The most common windings are 0.025 to 3.2 mm round copper wires. Most of the insulation type was initially wound with insulating tape or thread, but with the development of chemical industry, enameled wire increased rapidly.

In order to supply electricity to the coil, it is necessary to remove the coating such as hot melt and enamel in the areas where the terminals are joined at both ends. Conventionally, the terminal is crimped after SOLDERING at the coil end and the terminal is crimped at the coil end. After the bonding, the spot was welded with heat generated by instantaneous sparking to remove hot melt and enamel. However, the coil is formed by twisting several strands of wire and coating it with hot melt and enamel. When using spot welding with heat generated by electric spark, the hot melt and enamel residue are not completely removed. As a result, the electrical resistance becomes high and the current supply becomes unstable, which lowers the efficiency.

Therefore, there is a need for a method of manufacturing an induction heating coil in which a high frequency induction heating method is used to completely remove the hot melt and enamel, and then couple terminals, thereby reducing electric resistance and increasing conductivity of the terminal coupling portion so that current supply is stable. .

The present invention has been made to solve the above problems, and an object of the present invention is to generate induction electricity to perform high frequency heating to remove the coating of the coil and completely remove the foreign material, so that the terminal is crimped, so it has low resistance and excellent conductivity. It is to provide an induction heating coil manufacturing method and a manufacturing apparatus thereof.

Another object of the present invention is to automatically repeat the manufacturing process only by operating the control panel, so the work process is simple, improves productivity, makes product quality uniform, and improves and automates the work process harmful to the human body. It is to provide an induction heating coil manufacturing method and a manufacturing apparatus thereof.

In order to achieve the above object, induction heating coil manufacturing method according to a preferred embodiment of the present invention, after inserting the work start point formed by cutting one end of the coil into the high-frequency induction heater, generating the induction electricity coil Removing the coating of the; Completely removing the coating residue using a compressed air jet; Crimping and coupling the terminals to the starting point of the coil; Fixing the work start point terminal to the lower terminal clamp by the robot, and installing a part of the coil to be caught in the groove formed in the lower mold; Winding the coil after the upper mold is lowered to proceed with the primary and secondary windings; Setting the work end point of the coil and placing it in the high frequency induction heater, and generating induction electricity to remove the coating of the coil; Cutting the work end point of the coil to simultaneously form the current work coil end point and the next work coil start point; Completely removing the coating residue at the current work coil end point and the next work coil start point using a compressed air injector; Placing the stripping portion between the fingers, then cutting the work end point of the coil to simultaneously form the current work coil end point and the next work coil start point; Crimping and coupling the terminals to the current working coil end point and the next working coil start point, respectively; Fixing the end terminal of the coil to the upper terminal clamp, and supplying current to both terminals to melt the hot melt to complete the coil forming; And taking out the product after cooling the coil in which the molding is completed.

Hereinafter, an induction heating coil manufacturing method of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a method of manufacturing an induction heating coil, according to an exemplary embodiment of the present invention. According to Figure 1, when starting the work for the first time by cutting one end of the coil to form a starting point, the starting point is inserted into the high frequency induction heater. When power is supplied to the high frequency induction heater, induction electricity is generated to generate an eddy current, which removes the coating of the coil. Hot melt and enamel are used as the coating of the coil. Since the coil is formed by twisting several strands, even if the coating is burned at a high frequency, the coating is not completely removed and some residue remains in the coil. If the coating residue is not completely removed, the electrical resistance will increase and performance will be degraded when using the product. Therefore, use a compressed air injector to completely remove the coating residue. At this time, a compressor or an air inhaler may be used instead of the compressed air injector.

Once the covering residue at the starting point of the coil has been completely removed, install the starting point at the finger. At this time, the coil moves along the coil transfer guide to move smoothly, and the finger moves so that the starting point of the coil is inserted into the terminal. The press then operates to join the coil and the terminal. The terminal is automatically supplied by an automatic feeder.

After the terminal is connected to the starting point of the coil, the robot grabs the terminal and moves it. First, the work starting point terminal is fixed to the lower terminal clamp, and a part of the coil is inserted into the groove formed in the lower mold. By fixing the starting point of the work and the position of the part of the coil, the coil is not tangled and the work is done densely when the winding work is performed.

If the position of the work start of the coil is fixed, the upper mold descends and rotates, and the winding operation proceeds. After the winding is finished, the high frequency induction heater is activated to remove the covering of the coil located inside. The compressed air injector is then operated to completely remove the coating residue, position the stripping portion between the two fingers and then cut. The front part of the cut coil is the end point of the coil whose winding is finished, and the back part is the start point of the next work after the current work is finished. After pressing both ends of the cut and pressing the terminals at the same time, the starting point of the next work is to be waited and the end terminal of the current work coil is moved by the upper terminal clamp.

This completes the winding and both ends of the coil are joined to the terminal with the sheath completely removed, respectively fixed to the terminal clamp. By the way, although the winding work, but the coil is not coupled, the current is supplied to both terminals to melt the hot melt of the coil coating to complete the molding into one conductor shape.

Since the coil temperature is high due to the electric heat of melting the hot melt, after supplying cooling air or cooling water to lower the coil temperature, when the upper mold is raised and the product is taken out, the coil forming according to the induction heating coil manufacturing method of the present invention is completed. .

If you want to repeat the coil molding continuously, since the terminals are coupled to the start point of the next work, repeat the process of moving the start point terminal to the lower terminal clamp.

Figure 2 is a front view showing an induction heating coil manufacturing apparatus, according to an embodiment of the present invention, Figure 3 is a side view. According to Figures 2 and 3, the induction heating coil manufacturing apparatus of the present invention comprises a frame 12 formed so that each equipment is installed and a motor 14 for supplying power to operate the device; A control panel 16 installed to control the operation of the device; A high frequency induction heater 20 for generating high frequency using induction electricity to remove the coating coated on the surface of the coil 18; A compressed air injector 22 which is installed to reduce the electrical resistance and completely remove the coating residue so as to stably heat transfer; The finger 26 holding the coil 18, the feeder 30 automatically supplying the terminal, and the terminal 28 are crimped so that the start point and the end point of the coil 18 are coupled with the terminal. Caulking unit 24 composed of a pressing machine 32 to be; A robot 36 moving along the guide 38 to automatically transfer the coil 18 according to the working step; And an upper mold 44a and a lower mold 44b formed to wind and coil the coil 18, and a terminal clamp 50 for supplying a current to the terminals at the start and end points to fix the terminal to complete molding. It includes a mold 40 to be.

In plan view, a caulking cylinder 34 is installed at the front and a cutting machine 27 positioned between the two fingers 26 and the fingers 26 is installed at the center, and an automatic feeder for supplying the terminal 28 ( A caulking portion 24 composed of a presser 32 for pressing the terminal 30 and the terminal 28 to be coupled to the coil 18 is installed at the rear side.

A groove 46 may be formed at one side of the lower mold 44b to fix a portion of the coil in the starting point direction so that the winding may proceed smoothly.

In addition, a cooling unit 48 having an air-cooled or water-cooled cooling device may be installed in the lower mold 44b to cool and take out the coil 18 after molding.

Each piece of equipment is installed to be supported by the frame 12. Supplying power to the motor 14 causes each device to start operation. First, the end of the coil 18 is cut and inserted into a hole formed in the coil transfer guide 19 so that the coil is automatically supplied during the working process.

The high frequency induction heater 20 is formed in a cylindrical structure surrounding the coil 18. When the coil 18 is inserted, induction electricity is generated to form an eddy current to burn hot melt and enamel coated on the outside of the coil 18. As a result, the outer coating of the coil 18 is largely removed, but the inside of the coil 18 is formed by twisting a plurality of strands of conductors, so that even after high frequency heating, some residue of the coating is present in the inner conductors. If the coating residue is not removed, the electrical resistance increases when the product is used, thereby degrading performance. Therefore, it is preferable to completely remove the coated residue using the compressed air injector 22.

Conventionally, the coating is removed by a spot welding method in which the coil and the terminal are crimped and then welded with heat generated by generating an electrical spark. However, since the coating residue of the coil is not completely removed, the electrical resistance is large and the current flow is high. There was an unstable disadvantage. According to the manufacturing method of the present invention, after completely removing the coating residue on the terminal coupling part, the terminal is compressed and combined with the coil, thereby reducing electric resistance and stabilizing the current flow.

The uncoated coil 18 is moved to the finger 26. In the initial operation, only the finger 26a located on the left side of the figure is operated and the right finger 26b remains fixed. When the left finger 26a rotates 90 degrees while holding the starting point of the coil 18, the caulking cylinder 34 is pushed to move to the press 32. As shown in FIG. After feeding the terminal from the automatic feeder 30 installed at the back of the press 32 to bit the coil 18, the press 32 operates to couple the coil 18 and the terminal, and the finger 26 is a coil. Return to the original position with (18). The robot 36 then moves the starting point terminal 28 of the coil 18 to secure it to the lower terminal clamp 50b, wherein a portion of the coil 18 connected to the terminal 28 is the lower mold 44b. It is located in the groove 46 formed in the.

When the starting point terminal 28 is fixed to the lower terminal clamp 50b, the upper mold 44a is lowered, coupled with the lower mold 44b, and then rotated to perform the winding operation. As the winding proceeds, the entire coil 18 moves toward the mold 44 by the length of the product. When the winding work is finished, the cutting work is performed to connect the terminal 28 to the end point of the coil 18. Before the cutting, the coating removal work is performed by the high frequency induction heater 20 and the compressed air injector 22. Proceed first. The stripping operation repeats the same operation as for the coil 18 starting point.

After completely removing the coating of the coil 18, the robot 36 is operated to position the removing portion between the two fingers 26, and the cutting machine 27 is operated to cut. Unlike when starting the first work, the two fingers 26 are holding the coil 18. The right finger 26b is the end point of the coil 18 currently working, and the left finger 26a is the next work. The starting point of the coil is taken. The two fingers 26 rotate 90 degrees in the direction of the caulking portion 24 at the same time, and return to their original positions after the terminal 28 is engaged.

Thereafter, the left finger 26a maintains the standby state, and the robot 36 moves the terminal 28 located on the right finger 26b to the upper terminal clamp 50a. When the winding is completed, the hot melt is melted to form the coil 18 sheath by supplying a current to both terminals 28 to melt the sheath to form a single conductor. Unlike high frequency heating, the hot melt is not removed, but the coil 18 wound on the mold 44 while being melted by electric heat is molded into a single mass to complete the induction heating coil fabrication of the present invention.

However, since the product is finally completed by applying electric heat, it is preferable to cool the mold before opening the mold 44 to take out the product. Cooling method can be used both air-cooled and water-cooled, in the present invention, the cooling unit 48 is formed below the lower mold (44b).

Figure 4 is a front view showing a caulking portion of the induction heating coil manufacturing apparatus, according to an embodiment of the present invention. According to FIG. 4, the caulking portion 24 is composed of a feeder 30 for supplying a terminal, and a crimper 32 for crimping the terminal 28 and engaging the coil 18.

The feeder 30 automatically operates such that the terminal 28 is continuously supplied to the press 32. When the finger 26 inserts the coil 18 into the press 32, the press 32 operates to couple the terminal 28 and the coil 18.

Figure 5 is a side view showing a mold portion of the induction heating coil manufacturing apparatus according to an embodiment of the present invention. According to FIG. 5, since the robot 36 moves along the guide 38 installed in three directions of the x, y, and z axes, the terminal 28 coupled to the end of the coil 18 may be moved to a required position. In addition, it is possible to control the operation of the upper mold (44a) in accordance with the operation of the mold cylinder (42).

The induction heating coil of the present invention is manufactured through the above process, and if the product is continuously manufactured after the product is taken out, the coil 18 is left in the state of being coupled with the terminal 28 on the left finger 26. The operation is repeated since the robot 36 moves the terminal 28 fixed to the left finger 26 to the lower terminal clamp 50b.

In the manufacturing process, each device is automatically operated only by operating the control panel 16, so that the operation can be easily performed.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order to better understand the claims of the invention which will be described later. Additional features and advantages constituting the claims of the present invention will be described below. It should be appreciated by those skilled in the art that the conception and specific embodiments of the invention disclosed may be readily used as a basis for designing or modifying other structures for carrying out similar purposes to the invention.

In addition, the inventive concepts and embodiments disclosed herein may be used by those skilled in the art as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. In addition, such modifications or altered equivalent structures by those skilled in the art may be variously changed, substituted and changed without departing from the spirit or scope of the invention described in the claims.

As described above, the present invention has the advantage of producing an induction heating coil having low resistance and excellent conductivity since the induction electricity is generated and the high frequency heating is used to remove the coating of the coil, and then the terminal is crimped after completely removing foreign substances.

In addition, since the manufacturing process is automatically repeated just by operating the control panel, the work process is simple, the productivity is improved, the product quality is uniform, and the work process harmful to the human body is improved and automated, which is harmless to the human body and is environmentally friendly.

Claims (6)

In the induction heating coil manufacturing method, Inserting a work start point formed by cutting one end of the coil into the high frequency induction heater, and then generating an induction electricity to remove the coating of the coil; A second step of completely removing the coating residue by using a compressed air injector; A third step of pressing and coupling the terminal to the starting point of the coil; A fourth step of the robot fixing the work starting point terminal to the lower terminal clamp and installing a part of the coil to be caught in the groove formed in the lower mold; A fifth step in which the upper mold descends to close the mold, and then wound the coil to proceed with the primary and secondary windings; Setting a working end point of the coil and placing the coil at a high frequency induction heater, and generating induction electricity to remove the coating of the coil; A seventh step of completely removing the coating residue of the coil by using a compressed air injector; An eighth step of placing the stripping portion between the fingers and then cutting the work end point of the coil to simultaneously form the current work coil end point and the next work coil start point; A ninth step of crimping and coupling the terminals to the current work coil end point and the next work coil start point, respectively; A tenth step of fixing the end terminal of the coil to the upper terminal clamp and supplying current to both terminals to melt the hot melt to complete coil forming; And Induction heating coil manufacturing method comprising the eleventh step of taking out the product after cooling the completed coil. The method of claim 1, Induction heating coil manufacturing method characterized in that for repeating the operation automatically according to the manufacturing method, starting from the step 4 after the product takeout. The method of claim 1, An induction heating coil manufacturing method comprising using a compressor or an air inhaler instead of a compressed air injector. In induction heating coil manufacturing apparatus, A frame 12 configured to install each piece of equipment and a motor 14 for supplying power to operate the device, A control panel (16) installed to control the operation of the device, Coil transfer guide 19 formed to move the coil 18 smoothly, A high frequency induction heater 20 for inducing electricity to generate a high frequency so as to remove the coating coated on the surface of the coil 18, Compressed air injector 22, which is installed to reduce the electrical resistance and completely remove the coating to ensure stable heat transfer, The finger 26 holding the coil 18, the feeder 30 automatically supplying the terminal, and the terminal 28 are crimped so that the start point and the end point of the coil 18 are coupled with the terminal. Caulking portion 24 consisting of a pressing machine 32 to be, A robot 36 moving along the guide 38 to automatically transfer the coil 18 according to the working step, and An upper mold 44a and a lower mold 44b formed to wind and coil the coil 18, and a terminal clamp 50 for supplying a current to the terminals of the starting point and the ending point to fix the terminal to complete molding. Induction heating coil manufacturing apparatus comprising a mold (40). The method of claim 4, wherein Induction heating coil manufacturing apparatus, characterized in that formed on one side of the lower mold (44b) groove 46 for fixing a portion of the coil in the starting point direction so that the winding proceeds smoothly. The method of claim 4, wherein Induction heating coil manufacturing apparatus, characterized in that the cooling portion (48) is installed in the lower mold (44b) to cool and take out the completed coil (18).

Images