KR102157513B1 - Current Sensor Manufacturing Method Using Wound Cut Core for Current Sensor - Google Patents

Abstract

The present invention relates to a method for manufacturing a current sensor using a wound cut core for the current sensor and, more specifically, to the method for manufacturing the current sensor using a wound cut core for the current sensor which provides a method of manufacturing the current sensor formed by a wound method in which the current sensor is manufactured by winding a material, wherein after winding a coated material through a coating module in form of a multi-layered through a wire jig, placing the coated material on the cut core included in a cutting module, and cutting the coated material, the current sensor is manufactured, and a coating layer is formed by applying a coating solution on the surface of the material, but the thickness of the coating layer can be adjusted according to the material, and the method includes a coating liquid recycling unit which collects and recycles the coating solution separated from a moving material.

Description

Current Sensor Manufacturing Method Using Wound Cut Core for Current Sensor}

The present invention relates to a method for manufacturing a current sensor using a wound-cut core for a current sensor, and more particularly, to provide a method for manufacturing a current sensor formed in a wound method by winding a material, but coated through a coating module. After the material is wound in a multi-layered form through a jig for winding, it is placed on a cut core included in the cutting module and then cut to manufacture, and a coating layer is formed by applying a coating solution to the surface of the material. The present invention relates to a method for manufacturing a current sensor using a wound-cut core for a current sensor equipped with a coating liquid recycling unit that can control the thickness of the material and collect and recycle the coating liquid separated from the moving material.

In general, a current sensor having a ring-shaped core, a magnetic gap formed by cutting a portion of the core to form an open portion, and a hall element disposed in the magnetic gap It is known.

For example, the core and the Hall element are accommodated in a receiving portion formed to be opened on an upper side of a box type body, and a sealant of synthetic resin is filled inside the receiving portion, and the core is cured while the sealant is cured. And the Hall element is sealed while being disposed in the box-shaped body.

In such a current sensor, a current flowing to an electrically conductive member inserted into the ring-shaped core is detected by a Hall element disposed in the magnetic gap.

That is, a magnetic flux is generated in the coater by a current flowing through the electrically conductive member, and the Hall element generates a Hall voltage due to a Hall effect corresponding to the magnetic flux.

The Hall voltage generated by the Hall element not only corresponds to the magnetic flux of the core, but also corresponds to the current flowing to the electrically conductive member generating the magnetic flux. Therefore, the Hall voltage is referred to as a detection signal of an electric current value.

In the above operation relationship, a current sensor is used to detect the current flowing through the electrically conductive member.

Looking at a conventional method of manufacturing the current sensor, a core and a Hall element are attached to a receiving portion formed in the box-shaped body. Then, a liquid or gel-type sealing material having fluidity is poured or dropped into the receiving part to fill the interior of the receiving part with a liquid or sealing material, and then sealed while the core and the Hall element are positioned in the receiving part by hardening of the sealing material. Is fixed.

In this case, the magnetic gap of the core is formed in an open state by cutting a part of the core. Accordingly, a stress generated by hardening of the sealing material is applied to the core, and the ring-shaped core is deformed by the stress, so that the size and shape of the magnetic gap are changed from the set value. Therefore, there is a problem in that the accuracy and sensitivity of current detection using the Hall element are deteriorated.

In addition, when the material used as the sealing material is a thermosetting material, a large stress is generated when the sealing material is thermally cured due to the linear expansion coefficient of the sealing material, and the degree of deformation of the core is severe due to such stress, so that the accuracy and sensitivity of current detection are reduced. There was a problem that occurred severely.

In addition, in order to prevent the deformation of the core caused by the hardening of the sealing material, a sealing material made of a material having low stress generation during curing can be used, but this sealing material is a problem that causes an increase in manufacturing cost because the sealing material is relatively expensive. There was this.

As a conventional technique proposed to solve this problem, there is Korean Patent Application Publication No. 10-2017-0022408.

The prior art relates to a'method of manufacturing a current sensor capable of reducing eddy current loss', comprising: manufacturing a core by winding a ribbon-shaped steel plate in several layers; Forming a gap in a predetermined position of the core; Etching one end and the other end of the opposite core with a gap therebetween to maintain an electrical insulation state between the steel sheets; And placing the Hall sensor in the gap.

In the prior art made as described above, in order to reduce the loss of the eddy current, the steel sheet is formed by winding several layers and a gap is formed therein. However, the loss of eddy current cannot be prevented by simply arranging the steel sheet in several layers, and the gap is closed. It is described that it can be formed by polishing, diamond cutting, laser cutting, etc. during the forming process, but there is a problem in that the defect rate during manufacturing is high because there is no means for preventing the wound steel sheet from being damaged during the gap formation process.

Republic of Korea Patent Publication No. 10-2017-0022408

The present invention has been proposed to solve the above problems, and provides a method for manufacturing a current sensor formed in a wound method in which a material is wound and manufactured, but the coated material through a coating module is laminated in multiple layers through a jig for a wound. After being wound in one form, it is placed on a cut core included in the cutting module, and then cut and manufactured, and a coating layer is formed by applying a coating liquid to the surface of the material, but the thickness of the coating layer can be adjusted according to the material, and the material in motion It is an object of the present invention to provide a method for manufacturing a current sensor using a wound-cut core for a current sensor equipped with a coating liquid recycling unit that collects and recycles the coating liquid separated from the coating liquid.

In order to achieve the above object, the present invention,

A coating step of forming a coating layer on a material for forming a current sensor;

A lamination step of laminating the material on which the coating layer is formed on the wound core in multiple layers;

Including; a gap processing step of processing a gap through a cutting machine on the material stacked in multiple layers,

In the coating step,

A frame in which a drive motor, a driven roller wound with a material, and a drive roller rotating to transfer the material wound on the driven roller by receiving power from the drive motor, are disposed,

A tension control unit that adjusts the tension of the material discharged from the driven roller,

A coating unit including a coating bath in which a coating solution is stored and an upper end is opened to allow the material to enter and exit, and a coating roller disposed in the coating bath to maintain the tension of the material immersed in the coating solution;

A thickness control unit disposed on the coating unit to adjust the thickness of the coating layer formed on the surface of the material;

A coating layer having a certain thickness is formed on the surface of the moving material including a drying unit for drying the coating layer formed on the surface of the material while passing through the coating unit,

A coating liquid recycling part is provided between the thickness control part and the drying part to collect the coating liquid falling from the surface of the material moving toward the drying part and then supply the collected coating liquid to the coating tank.

In addition, the coating liquid recycling unit is disposed along the movement direction of the material moving to the drying unit, and a pair of collection plates disposed to face each other with the material interposed therebetween, and disposed at one end of the collection plate, one end portion And a guide plate arranged diagonally to face the coating tank, and a moving groove formed in a concave surface along the length direction of the collection plate.

In addition, the thickness control unit is coupled to the upper side of the coating bath, a cover formed with an inlet hole through which the material to be coated is introduced, and a discharge hole through which the material to which the coating liquid is applied is discharged, and the discharge hole on the upper surface of the cover. It includes a pair of coating blades arranged so that the pair faces each other to adjust the thickness of the coating liquid applied to the surface of the material discharged through the discharge hole.

In addition, the thickness control portion, characterized in that the air curtain portion for blocking the inflow of outside air into the coating tank.

In addition, the drying unit includes a circulation motor for inhaling outside air, a hot fan for generating hot air by heating the sucked outside air, and an air knife in communication with the hot air for discharging the hot air at a predetermined pressure.

In the present invention made as described above, the moving material maintains a certain tension during the moving process, and a coating layer is formed on the surface of the material, but after immersing the material in the coating bath, the thickness of the coating liquid applied to the surface of the material at an irregular thickness is reduced. By forming to have a uniform thickness through the thickness control unit there is an effect of increasing productivity by minimizing defects in the coating layer.

In addition, by collecting the coating liquid separated from the surface of the material during the movement of the material and transferring it to the coating tank, the coating liquid can be recycled and contamination can be prevented, thereby reducing the cost required for maintenance.

In addition, by first forming a coating layer on the material and then going through the winding and cutting steps, it provides a current sensor with improved accuracy of current detection by removing the phenomenon of adhesion between the multilayered materials during heat treatment and reducing eddy current loss. There is an effect that can be done. In particular, it solves the problem that the yield was as low as 30 to 40% when manufacturing the current sensor molded through the conventional press punching method, and the current sensor molded through materials such as nickel-permalloy and cobalt adheres to the adjacent material during the molding process. There is an effect of solving the problem that the characteristics were reduced due to the phenomenon.

1 is an exemplary view showing an embodiment implementing a method for manufacturing a current sensor using a wound-cut core for a current sensor according to the present invention.
Figure 2 is a flow chart showing a current sensor manufacturing method using a wound cut core for a current sensor according to the present invention.
Figure 3 is an exemplary view showing a coating module constituting the present invention.
Figure 4 is an exemplary view showing a coating liquid recycling unit constituting the present invention.
Figure 5 is an exemplary view showing a tension control unit in the coating module constituting the present invention.
6 is a state diagram showing an operating state of the tension control unit shown in FIG.
Figure 7 is an exemplary view showing a thickness control unit constituting the present invention.
8 is an exemplary view showing a drying unit constituting the present invention.
9 is an exemplary view showing a wound core constituting the present invention.
10 is an exemplary view showing a cutting core constituting the present invention.

Hereinafter, other objects and features of the present invention in addition to the above objects will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, a preferred embodiment of a method for manufacturing a current sensor using a wound-cut core for a current sensor according to the present invention will be described with reference to the accompanying drawings.

First, a method for manufacturing a current sensor using a wound-cut core for a current sensor according to the present invention (1) includes a coating step (S10) of forming a coating layer on a material for molding a current sensor, and a material on which the coating layer is formed is wound. A lamination step (S20) of stacking the core 70 in multiple layers, and a gap processing step (S30) of processing a gap through a cutter 81 of the multilayered material, and in the coating step (S10), Rotation to transfer the material (S) wound around the driven roller (13) by receiving power from the drive motor (11), the driven roller (13), the material (S) wound, and the drive motor (11) The frame 10 on which the driving roller 12 is disposed, the tension control unit 20 for controlling the tension of the material discharged from the driven roller 13, and the upper end is opened to store the coating liquid and allow the material to enter and exit. A coating part 30 including a coated bath 31 and a coating roller 32 disposed in the coating bath 31 to maintain the tension of the material immersed in the coating liquid, and the coating part 30 ) And a drying unit 50 for drying the coating layer formed on the surface of the material while passing through the coating unit 30 and passing through the coating unit 30 to control the thickness of the coating layer formed on the surface of the material. A coating layer of a certain thickness is formed on the surface of the moving material (S), but is disposed between the thickness control unit 40 and the drying unit 50 to collect the coating liquid falling from the surface of the material moving toward the drying unit 50 Then, a coating liquid recycling unit 60 for supplying the collected coating liquid to the coating tank 31 is provided.

The coating step (S10) is a step for forming a coating layer on a material for forming a current sensor, and a frame 10, a tension control unit 20, and a coating unit 30 in a specific configuration for forming a coating layer. ), and a thickness control unit 40, a drying unit 50 and a coating liquid cycle unit 60 are provided.

The frame 10 is a worktable formed by interconnecting a plurality of plates and posts to form a coating layer, and may be formed to be movable by placing a rollable caster in a portion contacting the ground.

In the frame 10, a driving motor 11 operated by a power and a signal applied to one side is disposed, and a driving roller 12 that rotates by receiving a driving force of the driving motor 11 is disposed. In addition, a driven roller 13 on which a material S is wound is disposed in a direction opposite to the driving roller 12.

Here, the driven roller 13 is disposed so as to be rotatable by the moving force of the material S moving by the operation of the driving roller 12, through which the material S drawn from the driven roller 13 The tension is maintained by the rotational force of the drive roller 12.

In addition, a plurality of auxiliary rollers 14 may be disposed on the frame 10 to change the transfer direction in the direction in which each component for forming a coating layer on the transferred material S is disposed. It goes without saying that the number and position of the auxiliary rollers 14 are not limited to the shape shown as being changeable according to the transport direction of the material.

The tension control unit 20, as shown in Fig. 5, is for maintaining a constant tension of the material (S) moving between the driven roller 13 and the driving roller 12, driven roller ( It is to prevent the tension of the material from being maintained according to the distance between 13) and the driving roller 12 or the arranged height.

To this end, the tension control unit 20 includes a base 21, a top plate 22 disposed above the base 21, and a plurality of vertical pillars disposed between the base 21 and the top plate 22. (23), a pair of pressing plates 24 disposed above the base 21, and an elevating means 25 for elevating any one of the pressing plates 24.

The base 21 has a flat plate shape and is disposed on the frame 10, and is detachably coupled to the frame 10 so as to be interchangeable according to the left and right widths of the material S.

The top plate 22 has a shape and size corresponding to the shape and size of the base 21 and is disposed above the base 21,

A plurality of vertical pillars 23 are disposed at positions spaced apart between the base 21 and the upper plate 22 to form a space between the base 21 and the upper plate 22.

The pressing plate 24 is arranged to be symmetrical to each other above the base 21 so that the material (S) moves between them, but the contacting material (S) is not damaged, such as rubber, urethane, or soft synthetic resin material. It is preferably made of the same soft material.

Here, the pressing plate 24 may be implemented as a pair of rollers that rotate by the moving force of the moving material (S).

The lifting means 25 is for lifting any one of the pair of pressing plates 24, because the distance between the pressing plates 24 must be adjusted according to the thickness of the moving material S.

In the present invention, it will be described in an embodiment that the height of the compression plate 24 disposed above the pair of compression plates 24 is varied.

The elevating means 25 includes a lifting plate 251 to which the crimping plate 24 disposed above the pair of crimping plates 24 is coupled, and a plurality of the lifting plates 251 are disposed on the rim of the lifting plate 251, and the vertical An elevating block 252 fitted to the pillar 23 so as to be elevating, a fixing nut 253 disposed on the upper surface of the elevating plate 251, and a long bolt 254 screwed to the fixing nut 253 And a handle 255 for rotating the long bolt 254.

The elevating means 25 made as described above raises or lowers the height of the elevating plate 251 by rotating the handle 255, wherein the operation of the handle is manually performed by the operator or a separate motor and connected to the motor. Automation through power transmission means (chain, gear, belt, etc.) is also possible.

6 shows the operating state of the tension control unit made as described above, wherein the driving roller 12 moves the material while rotating by the rotational force transmitted from the driving motor, and the moving material is a pair of crimping plates 24 ) Pass through.

At this time, since the material (S) passes while in contact with the pressing plate 24, a resistance force against the pulling force of the driving roller 12 is generated, and this resistance force prevents sagging of the material passing through the pressing plate 24 It can maintain the tension of the material.

Here, by adjusting the gap between the pressing plates 24 according to the thickness of the material, the material moves while the material is in contact with the pressing plate, thereby maintaining the tension of the material during movement.

The coating part 30 forms a coating layer on the surface of the material by burying the coating solution on the surface of the transferred material (S), and the coating solution is stored and the material is introduced and immersed in the coating solution, and the material with the coating solution is It includes a coating bath 31 to be discharged, and a coating roller 32 disposed inside the coating bath 31 to support the material to be immersed.

The coating tank 31 is disposed in the frame 10, a storage space for storing the coating liquid is formed, the upper end is made in the form of an open case, and the material is input or discharged through the opened upper end of the case. , It may be formed of a transparent material or provided with a transparent window so that the storage space can be checked from the outside.

And the coating roller 32 is disposed inside the coating tank 31 to support the moving material (S) so that it does not float when immersed in the coating liquid, and at the same time changes the moving direction. It goes without saying that 32 is not limited to the location and number shown in the drawing as the location and number of arrangements can be changed according to the area of the storage space of the coating tank 31 and the direction of inlet and discharge of materials.

In the coating unit 30 made as described above, the coating solution is deposited on the surface as the material introduced into the coating bath is immersed in the coating solution, and then the material is discharged from the coating bath by driving the driving roller.

Here, the coating tank 31 is provided with a thickness control unit 40 for uniformly making the thickness of the coating liquid on the surface of the discharged material.

The thickness control unit 40 includes a cover 41 covering the opened upper end of the coating bath 31 and a coating blade 44 disposed on the cover 41.

The cover 41 is detachably coupled to the open upper end of the coating bath 31, and a lead-in hole 42 formed therethrough so that the material moves into the interior of the coating bath 31, and the material coated with the coating solution is coated. The discharge holes 43 discharged to the outside of the tank 31 are formed side by side at positions spaced apart from each other.

The coating blade 44 is arranged to face a pair with the discharge hole 43 in the center to filter the coating liquid deposited on the surface of the material discharged through the discharge hole 43 by a predetermined thickness to a coating layer having a uniform thickness. To form.

At this time, the coating blade 44 is preferably made in a block shape extending up and down, but is made in a wedge shape whose end is narrowed toward the discharge hole 43 side of the cover 41, and the discharge hole 43 It is more preferable that the coating liquid, which is disposed adjacent to the rim and filtered through the coating blade 44, falls into the coating tank 31 through the discharge hole.

On the other hand, the cover 41 is further provided with an air curtain part 46 for minimizing the inflow of external air, foreign substances, moisture, etc. into the coating tank 31.

Here, the air curtain part 46 is to prevent deterioration of the coating liquid stored in the coating tank 31 due to contact with external air, foreign substances, and moisture, and is connected to an air tank (not shown) in which compressed air is stored, Compressed air is injected at a constant speed and pressure above (42) to block the inflow of outside air, foreign matter, and moisture into the coating tank, and at the same time, compressed air is supplied to the outer surface of the material introduced through the inlet hole (42). You can expect the effect of spraying off water droplets or foreign substances on the surface of the material.

At this time, the air curtain part 46 spraying compressed air only toward the inlet hole 42 is a state in which the coating liquid is embedded on the surface of the material discharged through the discharge hole. Therefore, the coating liquid deposited on the material surface by the sprayed compressed air There is a problem in that the thickness of the coating layer may be formed unevenly as the location scattered outside or buried on the surface is changed.

The drying unit 50 is for drying the coating liquid embedded in the material, a circulation motor 51 that sucks outside air, a hot fan 52 that generates hot air by heating the sucked outside air, and the hot fan 52 It includes an air knife 53 for discharging the generated hot air in communication with the constant speed.

The circulation motor 51 is provided on one side of the frame 10 and sucks outside air while operating through the applied power and signals. Since the operation and driving relationship of the circulation motor 51 is known, a detailed description will be omitted.

The hot air fan 52 receives the external air sucked through the circulation motor 51 and heats it to a constant temperature, and a heating means is provided therein, and the external air supplied while operating through the applied power and signal is operated at a constant temperature. To heat.

Here, the constant temperature can be changed according to the type of coating liquid and the thickness of the coating layer. For example, when the thickness of the coating layer is 2 mm or less, heating is performed at a temperature of 60 to 80°C.

The air knife 53 discharges air heated through a hot air to the outside, and has an inlet 532 through which hot air is introduced, and a fixture 531 fixed to the frame 10 through a fixing bracket 533 ), and a moving body 534 communicating with the fixed body 531 and having an outlet 535 through which hot air is discharged.

The moving body 534 is composed of a cover 536 and a nozzle (not shown) disposed inside the cover 536, and a displacement long hole 537 extending in the longitudinal direction is formed in the cover 536, and , The nozzle () is provided with a displacement screw 538 that is movably inserted into the displacement hole 537, and the position of the moving body 534 is changed according to the tightening and release of the displacement screw 538 and movement. And fix it in the changed position.

This is to adjust the distance between the outlet 535 formed in the moving body 534 and the material (S), and the thickness of the coating solution, such as the type of material (S) and coating solution, and the thickness of the coating layer and the moving speed of the material (S). It is to maximize the drying effect by the discharged hot air by adjusting the position of the outlet 535 according to various conditions that interfere with drying to adjust the distance with the material (S).

The present invention made as described above maintains a certain tension during the process of moving the material conveyed by the roll, and after applying the coating solution by immersing the material in the coating bath in which the coating solution is stored, irregular surface of the material during the immersion process It is possible to form a coating liquid adhered with a thickness to have a uniform thickness through the thickness control unit, and in this process, there is an effect of increasing productivity by minimizing defects in the coating layer by blocking the inflow of external air.

In addition, it is configured to absorb and dry the coating liquid on the material through hot air generated by heating after inhaling outside air, so that a product having a coating layer having a uniform thickness can be produced.

In addition, by first forming a coating layer on the material and then performing the winding and cutting steps, there is an advantage in that the multi-layered material is removed from sticking to each other during heat treatment and improved characteristics by reducing eddy current loss.

This solves the problem that the yield was as low as 30-40% when manufacturing the current sensor molded through the conventional press punching method, and in particular, the current sensor molded from materials such as nickel-permalloy, cobalt, etc. It solved the problem that properties were reduced due to sticking with adjacent materials.

On the other hand, in the present invention, the coating solution is disposed between the coating unit 30 and the drying unit 50 to collect the coating solution that has fallen from the surface of the material due to external vibration, impact, or gravity while the material is transferred. A coating liquid recycling unit 60 is further provided to recycle the coating liquid by supplying it to the coating tank and not pollute the surrounding environment.

The coating liquid recycling unit 60 includes a pair of collection plates 61 disposed along the moving direction of the material moving to the drying unit 50 and facing each other with the material interposed therebetween, and the collection plate ( 61), a guide plate 62 disposed diagonally so that one end faces the coating tank 31, and a moving groove 63 recessed from the surface along the length direction of the collection plate 61 ).

The pair of collection plates 61 are disposed along the moving direction of the moving material, and are formed in the shape of a plate extending in the longitudinal direction, and the pair is disposed facing each other with the material in the center.

At this time, the collection plate 61 is preferably arranged so that the gap between each other gradually decreases as the space between the upper and lower parts is, that is, toward the coating bath, which is collected by the collection plate 61 The resulting coating liquid was made to move along the surface of the collection plate arranged inclined toward the coating tank.

Here, the collection plate 61 may be formed in the form of a flat plate, but may be formed so that the flat cross section forms a gentle arc shape in order to increase the collection area.

The guide plate 62 is disposed at one end of the collection plate 61 to connect the collection plate 61 and the coating tank 31 to inject the coating liquid collected from the collection plate into the coating tank 31, at this time , A collection hole 47 to which the guide plate 62 is coupled is formed in the cover 41 covering the opened upper end of the coating tank 31.

This guide plate 62 has the advantage of being easy to change the collection plate compared to the direct coupling of the collection plate 61 to the coating tank. In a state in which the guide plate 62 is coupled to the cover 41, the collection plate 61 Is detachably coupled to the guide plate 62.

Subsequently, the guide plate 62 is formed to have the same angle as the inclined angle of the collection plate 61 so that the collected coating liquid flows continuously through the collection plate.

The moving groove 63 is concave formed on the surface of the collection plate 61 to improve the moving speed of the collected coating liquid, and the moving speed is lowered by the surface tension and movement resistance generated when moving along a flat surface. It is to solve the problem.

That is, by changing the shape of the surface of the collection plate 61, the reduction in the moving speed of the coating liquid due to the surface tension and the resulting movement resistance is solved.

To this end, a moving groove 63 is formed on the collection plate 61, and a plurality of moving grooves 63 are formed at mutually spaced positions so that the coating solution moves along the moving groove 63 to increase the moving speed of the coating solution. It can be done.

The coating liquid recycling part 60 made as described above collects the coating liquid separated from the material moving to the drying part by being disposed between the coating bath 31 and the drying part 50 through the collection plate 61, and the collected coating liquid is Re-supply to the coating tank for recycling to reduce manufacturing cost and at the same time prevent contamination of other components by the coating liquid away from the material.

Next, in the wound step (S20), the material on which the coating layer is formed through the coating step (S10) is laminated in multiple layers. For this purpose, the material is stacked with a wound core 70 and the material is wound. It includes a winding unit 71 for winding to the de-core (70).

The wound core 70 has a shape corresponding to the shape of the designed current sensor and is not limited to the shape shown in the drawings.

The wound core 70 is wound in a form in which materials are stacked in multiple layers through the winding unit 71, and the position is fixed through a separate fixing jig in order to maintain a fixed state during such a winding operation. It is preferable to be arranged in a state of being.

On the other hand, the winding unit 71 is to wrap the supplied material in the wound core 70, to be movable through the winding driving means 711 and the winding driving means 711 It consists of a winding module 712 that is arranged, wherein the winding driving means 711 is composed of a three-way (3-way) driving means for moving the winding module 712 in the X-axis, Y-axis, and Z-axis. As an example, it may be made of a gantry.

In addition, the winding unit 71 is further provided with a holder (not shown) for holding the material (S), and the operation of the winding unit 71 is controlled through a control unit.

Next, the cutting step (S30) is for processing the gap in the material wound on the wound core 70, and is a step of processing the gap essentially present in the non-contact current sensor.

To this end, the cutting step (S30) includes a cutting core 80, a cutting means 80B, and a cutting oil supply means 82.

The cutting core 80 receives and fixes the molded material S through the wound core 70, and a gap forming hole 80A for forming a gap required for the current sensor is formed.

The cutting core 80 and the gap forming hole 80A can be variously changed according to the shape of the current sensor to be manufactured, and are not limited to the shape shown in the drawings.

The cutting means (80B) is to form a gap by cutting a part of the material (S) fixed to the cutting core (80), the cutting drive means 811 and a cutting machine connected to the cutting drive means 811 ( 81).

Here, the cutting means 80B may be implemented in various forms such as a rotary grinder, a high voltage discharge, a diamond cutting machine, and the like, and the cutting means used in the present invention can be changed according to the type of material forming the current sensor. .

In the present invention, a cutting means composed of a grinder rotating through the cutting driving means 811 is illustrated, but is not limited thereto.

The cutting oil supply means 82 cleans dust and flying products generated in the process of forming a gap in the material S by the cutting means 80B, and at the same time prevents friction between the cutting means 80B and the material S. It is to cool the heat generated by it.

To this end, the coolant supply means 82 includes a coolant tank 821 in which the coolant is stored, a coolant supply pump 822 that pumps and supplies the stored coolant, and a cutting oil transfer line 823 and the front end of the coolant transfer line 823 It includes a cutting oil discharge nozzle 824 provided in.

Further, a recycling unit 83 for recovering and reusing the discharged cutting oil may be further provided, wherein the recycling unit 83 is provided with a filter for filtering out foreign substances such as debris of material included during cutting, and the filter And a recovery pipe 831 for transferring the cutting oil that has passed through to the cutting oil tank 821.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. .

Claims (5)

Coating step (S10) of forming a coating layer on the material for molding the current sensor;
Lamination step (S20) of laminating the material on which the coating layer is formed in multiple layers on the wound core 70;
Including; a gap processing step (S30) of processing a gap through a cutting machine 81 on the multilayered material,
In the coating step (S10),
Rotation to transfer the material (S) wound on the driven roller (13) by receiving power from the drive motor (11), the driven roller (13), the material (S) wound, and the drive motor (11) The frame 10 in which the driving roller 12 is disposed,
A tension control unit 20 for adjusting the tension of the material discharged from the driven roller 13,
Including a coating bath 31 in which the coating solution is stored and the top is opened to allow the material to enter and exit, and a coating roller 32 disposed in the coating bath 31 to maintain the tension of the material immersed in the coating solution. A coating part 30,
A thickness control unit 40 disposed on the coating unit 30 to adjust the thickness of the coating layer formed on the surface of the material;
A coating layer having a certain thickness is formed on the surface of the moving material (S), including a drying unit 50 for drying the coating layer formed on the surface of the material while passing through the coating unit 30,
The coating liquid recycling is disposed between the thickness control part 40 and the drying part 50 to collect the coating liquid falling from the surface of the material moving toward the drying part 50 and then supply the collected coating liquid to the coating tank 31 A method of manufacturing a current sensor using a wound-cut core for a current sensor, characterized in that the unit 60 is provided.
The method according to claim 1, wherein the coating liquid recycling unit 60,
A pair of collection plates 61 disposed along the moving direction of the material moving to the drying unit 50 and disposed to face each other with the material interposed therebetween,
A guide plate 62 which is disposed at one end of the collection plate 61 and is disposed diagonally so that one end thereof faces the coating tank 31,
A method for manufacturing a current sensor using a wound-cut core for a current sensor, characterized in that it comprises a moving groove (63) concavely formed on the surface along the length direction of the collection plate (61).
The method according to claim 1, wherein the thickness control unit 40,
A cover 41 coupled to the upper side of the coating tank 31 and having an inlet hole 42 through which the material to be coated is introduced, and a discharge hole 43 through which the material coated with the coating liquid is discharged,
A pair of coating blades arranged to face each other on the upper surface of the cover 41 with the discharge hole 43 interposed therebetween to adjust the thickness of the coating liquid applied to the surface of the material discharged through the discharge hole 43 A method for manufacturing a current sensor using a wound-cut core for a current sensor, comprising (44).
The method according to claim 1, wherein the thickness control part 40,
A method for manufacturing a current sensor using a wound-cut core for a current sensor, characterized in that an air curtain part 46 for blocking external air from flowing into the coating tank 31 is further provided.
The method of claim 1, wherein the drying unit 50,
A circulation motor 51 that sucks outside air,
A hot fan 52 that generates hot air by heating the inhaled outside air,
A method of manufacturing a current sensor using a wound-cut core for a current sensor, characterized in that it includes an air knife (53) in communication with the hot air fan (52) to discharge hot air at a predetermined pressure.

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