KR20000037637A - Wound core type core cutting device - Google Patents

Abstract

PURPOSE: A wound core type core cutting device is provided to shorten the manufacturing time of a wound core type by continuously cutting the wound core. CONSTITUTION: A base(100) includes a positioning portion(110) in which a core is positioned to cut the core(10). A feeding device feeds the core so that the core is positioned in the positioning portion(110) which forms the base(100). A support member supports the core through a space portion(11) in the core positioned in the positioning portion(110). A cutter(118) cuts a portion of the core which is supported by the support member. A microprocessor controls the operations of the devices.

Description

Core core cutting device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wound core core used in various transformers such as transformers, ballasts, and the like, and more particularly, to a cutting device for simultaneously cutting a designated portion of a wound core core wound a certain number of times by a cutter.

In general, the transformer is used for the purpose of appropriately transforming the voltage of each state as necessary for the user, and the ballast is an alternating current or high frequency component using the principle that the coil has a large resistance (reactance) with respect to the alternating current. It is used for the purpose of interception.

These transformers and ballasts are provided with iron cores and windings as their main parts, and are divided into inner and outer iron types according to the method of disposing the two parts.

The side and the iron core are inside, and the winding is wound around both core cores is called core type, and the winding is inside and the iron core surrounds the winding is called shell type.

Recently, unlike a conventional method of assembling iron cores by stacking single-plate iron sheets, a wound core type made of circumferentially wound steel coils that have been rolled into a spiral shape is a compact power distribution transformer. It is mainly used for chokes such as ballasts and ballasts.

This is because iron loss and excitation currents flow smaller in the wound core than the inner core.

However, the core-core core as described above is excellent in performance, but due to its high production cost, it is mainly used only for expensive equipment.

Hereinafter, the manufacturing process of the wound core core as described above in more detail.

First, the rolled silicon steel strip (硅 素 鋼帶) a certain number of times so that each rolled edge has a rounded roughly rectangular shape, and then unwinded, put it in an adhesive, and then take out and solidify it so that it becomes a mass.

The reason for the solidification by putting the coiled silicon strip into the adhesive is to prevent the wound silicon strips from being separated when the middle portion of the silicon strip is cut in a later step.

Thereafter, the center of the long side of the wound silicon steel strip is cut using a wire saw or a thin grinding stone to obtain a core having an “U” shape as a whole. Thus, two cores divided by cutting the long side center are obtained.

The two cores thus obtained are used according to their needs. Generally, in order to make a choke, the cores obtained as described above are provided in two pairs, and the cores are simultaneously wrapped around the inner and outer sides of the bobbin wound on the outer circumferential surface. The choke is made by inserting one side into an insertion hole formed at the center of the bobbin.

At this time, an insulating paper is inserted into a portion where the cut surfaces of the core abut each other to form an air gap, which prevents the core from tending to saturate and at the same time the magnetic flux is proportional to magnetization. To make it possible.

However, as described above, the choke of the structure is impregnated with the core during the cutting process, that is, the process of adhering to the adhesive, etc., so that the cutting takes a long time when cutting with a wire saw or thin grinding machine. It was a waste of production time.

In addition, as the cutting surface of the core becomes rough due to the cutting method as described above, a separate polishing process is performed to even the surface, resulting in a change in the structure of the cutting surface, thereby degrading core performance (reduction of iron loss). .

In view of the above problems, the inventors have developed a core-core core having the same structure as that of FIG. 1 filed by the applicant as patent 98-16199.

The core of the above structure has the advantage of reducing the loss of iron loss by cutting only one core, which has been conventionally divided by dividing two places, and at the same time, the manufacturing process is considerably simplified, thereby reducing the manufacturing cost.

Also, in the cutting process, cutting is performed immediately after annealing the core core core wound around the silicon steel strip in the shape of a circumferential shape rather than impregnating the core as in the prior art, so that the cutting can be performed with a simple cutter. Has the advantage of being.

This is because, as in the prior art, the core core is not impregnated with the adhesive, so that the cutting can be easily performed with a general cutter.

However, the cutting operation of the core as described above can be easily cut by a general cutter, but the time required for cutting is reduced. However, since the automation is not performed according to the operation, the entire process of manufacturing the choke is continuously performed. Each step had to be done by hand only by hand.

Accordingly, the manufacturing time (core cutting time) is changed only by the ability of the operator, so that the operator can continuously perform simple work without interruption, and thus, continuous work cannot be performed for a long time.

In addition, as the cutting operation is performed solely by the operator, the defective rate of the product is increased, resulting in an increase in the overall manufacturing cost.

In order to solve the conventional problems as described above of the present invention, by providing a cutter to continuously cut the core core having a single cutting site by reducing the manufacturing time according to the cutting process of the core core core The purpose of this is to improve the working efficiency and to ensure stable cutting.

According to an aspect of the present invention for achieving the above object, the core having a seating portion on which the core is seated for cutting the core, and the core so that the core can be seated on the seating portion constituting the base. Transfer means for transferring, support means for supporting the core through the inner space of the core seated on the seating portion, cutting means for cutting by a cutter for lifting and lowering the cut portion of the core supported by the support means, and There is provided a core-core core cutting device comprising a micom for controlling the operation of each means.

1 is a perspective view showing a core core core produced by the present invention

2 is a perspective view showing a core cutting device according to the present invention

3 is a state diagram of operating the first driving force transmission means as the core is injected into the seat inlet side of the base;

Figure 4 is a state diagram showing the process of moving the core to the cutting position by the transfer member

FIG. 5 is an enlarged state diagram of part “A” of FIG. 4;

FIG. 6 is a cross-sectional view illustrating the line II of FIG. 5. FIG.

7 is an enlarged view showing a state in which a core is cut.

Explanation of symbols for main parts of the drawings

100. Base 110. Seating part

111. Seating part inlet side 112. Seating part outlet side

113. First limit switch 114. Second limit switch

115. First guide hole 116. Second guide hole

117. Third limit switch 118. Cutter

119. Guide groove 200. Guide rail

300. First driving force transmission means 310. Transfer member

311. Extension rod 400. Second driving force transmission means

410. Supporting member 411. Inclined surface

Hereinafter, the present invention will be described in more detail with reference to FIGS.

Figure 2 is a perspective view showing a core cutting device according to the invention, Figure 3 is a state diagram of operating the first driving force transmission means as the core is inserted into the seat inlet side of the base, Figure 4 is the core by the transfer member This is a state diagram showing the process of moving to the cutting position.

FIG. 5 is an enlarged view showing a portion “A” of FIG. 4, and FIG. 6 is a cross-sectional view showing a line I-I of FIG. 5, and FIG. 7 is an enlarged view showing a state where a core is cut. Referring to the configuration of the present invention in detail as follows.

First, the present invention is to install a guide rail 200 inclined downward so as to pass through the inlet side 111 of the mounting portion on one side of the base 100 having a seating portion 110 by the self-weight core core (hereinafter referred to as 10) can be continuously inserted.

At this time, the first limit switch 113 is installed at the inlet side 111 of the seating part so that the circuit can be turned on by contact with the core 10 introduced through the guide rail 200.

In addition, one side of the base transfers the core 10 introduced into the inlet side 111 of the seating unit 110 through the guide rail to the outlet side 112 of the seating unit by one pitch (total length of the core). The transfer member 310 is installed to receive the driving force by the first driving force transmission means 300 so as to be forward or return to the original state.

At this time, the transfer member is controlled by a microcomputer (not shown) to move forward when the first limit switch 113 is turned on (ON).

And, the inlet side 111 of the seating portion 110 constituting the base and the extension rod 311 formed on one side of the transfer member in accordance with the advancing of the transfer member 310 separately from the first limit switch and The second limit switch 114 is installed so that the circuit can be turned on while being in contact.

In addition, a first portion formed on one side of the seat by the second driving force transmission means 400 on one side of the base where the inner space 11 of the core seated in the seat 110 of the base 100 is located. The support member 410 is installed to be able to move forward and backward through the guide hole 115 and the second guide hole 116 formed on the other side, and is elevated by a ram 120 on the upper side of the seating portion of the base. The cutter 118 may be installed to cut the cut portion of the core supported by the support means.

At this time, the support member is controlled by the microcomputer to move forward when the contact of the second limit switch 114 is turned on (ON), the second guide hole of the mounting portion 110 constituting the base 100 ( 116) On one side, a third limit switch 117 is installed in contact with the tip of the support member 410 as the support member moves forward.

When the contact point of the third limit switch 117 is turned on, the signal is sent to the microcomputer to drive the ram 120, so that the cutter 118 is lowered.

Referring to the operation of the present invention configured as described in more detail as follows.

First, the cutting material is buried in the cutting position of the core 10 to be cut while power is applied to the device.

This is because the cutter blade may be damaged by self-resistance of the core 10 while the cutter 118 cuts the core, and the cutter may be subjected to iron loss due to a poor cutting surface. This is to minimize the resistance.

The cutting material is most effective as the use of water is short in terms of cost or time required for drying in the process.

When the core 10 soaked in water is placed on the guide rails 200 in turn, the cores are guided to the guide rails 200 by their own weight to the seating part 110 inlet side 111 of the base 100. Is committed.

As described above, the core injected into the inlet side 111 of the seating unit 110 turns on the contact point of the first limit switch 113 as soon as it reaches the inlet side of the seating unit as shown in FIG. 4.

This, the core is sliding on the guide rail according to its own weight and the inclination angle of the guide rail 200 during the process of being put into the inlet side 111 of the mounting portion 110 of the base 100, wherein Due to the sliding acceleration, the contact of the first limit switch 113 installed on the opposite side of the side where the guide rail is located, that is, the direction in which the core 10 slides, turns on the contact of the first limit switch. It will be possible.

In addition, when the contact point of the first limit switch is turned on as described above, the signal is input to the microcomputer (not shown), and the first driving force transmitting means 300 is driven as shown in FIG. 6 under the control of the microcomputer. The member 310 is advanced.

Accordingly, the core 10 located at the inlet side 111 of the seating unit 110 is transferred to the cutting position in the seating unit 100 while being pushed by one pitch by the transfer member.

At this time, since the extension rod 311 is formed at one side of the transfer member, the extension rod moves in the same direction along with the movement of the transfer member, and thus pushes the contact of the second limit switch 114. The circuit of the switch is turned ON.

As described above, when the second limit switch 114 is turned on, the microcomputer (not shown) receiving the signal drives the second driving force transmitting means 400 installed at one side of the base 100, thereby transmitting the driving force. The receiving support member 410 is advanced as shown by the solid line in FIG. 6.

At this time, the front end of the support member in the process of advancing through the first guide hole 115 formed on one side of the base and the one side of the first guide hole, that is, the first guide hole and the second guide It penetrates the inner space 11 of the core 10 positioned between the balls 116.

This means that the guide member 115 and 116 and the core 10 formed in the seating portion are formed by precisely specifying the position of the core by moving only one pitch when the transfer member 310 moves the core 10. The inner space portions 11 of are coincident with each other.

Accordingly, the flow of the core 10 is supported by the support member.

The reason for supporting the core 10 in the above is that when the core is cut afterwards, only the core is properly supported so that the desired part of the core can be cut accurately, even if the core 10 is not properly supported. As indicated by the dashed-dotted line of 5, the iron loss is increased due to the slanted cutting to the left or the right.

In addition, as the inclined surface 411 is formed at the front end of the support member 410, it can be understood that the first guide hole 115 and the inner space 11 of the core can be penetrated smoothly.

When the support member 410 moves through the inner space part 11 of the core 10, the second guide hole 116 of the seating part 110 continues to penetrate therein. As the third limit switch 117 is installed at one side of the two guide hole, the front end of the supporting member 410 pushes the contact of the third limit switch to turn on the circuit of the third limit switch 117.

In this way, when the third limit switch 117 is turned ON, power is supplied to the cutter driving unit (not shown) under the control of the microcomputer receiving the signal, so that the cutter located directly above the cutting portion of the core ( 118) descends.

Accordingly, the cutter 118 having strong strength descends to the lower side thereof while applying instantaneous pressure (F) to the cut portion of the core 10, so that the core wound a certain number of times is cut from the cut portion while receiving the initial impact. Sequentially cut simultaneously.

At this time, the guide groove 119 is formed in the seating portion 110 of the base. The guide groove 119 is such that both sides of the cutter come into contact with the seating portion 110 when the cutter 118 is lowered. It is one of the configurations for preventing the cutter from being damaged by being formed to prevent damage.

In addition, the reason why the core 10 is not fixed to the direction side (vertical direction in the drawing) where the cutting is performed by the cutter 118 is as described above. This is to open the pressure distribution.

As a result, when the core is cut as described above, the cutter is returned to the original position (raised) under the control of the microcomputer (not shown).

At this time, whether the core is cut or not is determined according to the falling distance of the cutter 118 previously input to the microcomputer.

The descending distance of the cutter 118 input to the microcomputer in accordance with the last cut portion of the core 10 that the cutter cuts, that is, the overall surface according to the last surface of the core 10 in contact with the upper surface of the support member 410 The cutting depth (h) of the cutter must be properly adjusted.

This means that if the cutter sets its cutting depth to reach a part of the support member 410 in order to completely cut the core, the blade portion of the cutter 118 is cut in the support member 410 during the cutting operation of the core 10. This is because there is a risk of damaging the top surface.

Therefore, the lowering depth h of the cutter is set to be cut only to a position 2/3 of the thickness of the last surface a of the core to be cut to prevent damage to the supporting member and after the cutting operation of the core 10 is completed. It is most desirable to be able to easily remove the final cut by the operator.

In addition, the blade end of the cutter 118 is to be made symmetrically as a whole, which is, in the process of cutting the core by the cutter to make an even pressure distribution to both sides on the basis of the cut portion of the core by This is to minimize the resistance generated in the cutter during the cutting so that the cutting can be made smoothly.

Meanwhile, in the process of returning the cutter 118 as described above, the transferred support member 410 and the transfer member 310 are also returned to their original positions under the control of the microcomputer.

At this time, as the core 10 is continuously being fed into the inlet side 111 of the seating part 110 through the guide rail 200, the transfer member is clogged by the seating member as described above. Injected to the inlet side, the driving of each part (transfer member, support member, cutter) as described above is made again sequentially.

Accordingly, the continuous cutting of the core can be made.

As described above, the present invention simply maximizes the working efficiency because the operator simply feeds water or cutting oil to the cutting part of the core for cutting and then places it on the guide rail to be cut and transported sequentially to the cutting part. In addition, as the user does not have to cut the core directly, the work is made more stable.

In addition, it is possible to significantly reduce the time required for cutting as in the prior art can achieve a shortening of the overall manufacturing time, it is possible to achieve a continuous operation, it is possible to mass production.

Claims (6)

A base having a seating portion on which the core is seated for cutting the core; Transfer means for transferring the core so that the core can be seated in a seating portion constituting the base; Support means for supporting the core through the inner space of the core seated on the seating portion; Cutting means for cutting by a cutter for elevating a cutting portion of the core supported by the support means; A core-core core cutting device, characterized in that it comprises a micom for controlling the operation of each means. The method of claim 1, The transfer means is a detection unit for confirming that the core is input from the input unit and delivers the result to the microcomputer, A pusher for returning to the original position after transferring the core by one pitch while advancing when it is confirmed that the core is input by the sensing unit; The core-core cutting device, characterized in that the first drive force transmission means for moving the pusher forward and backward in response to the signal of the microcomputer. The method of claim 1, The support means is installed to be retractable on one side of the base, the support member is inserted into the inner space of the core through the guide hole formed on the side of the base during the cutting operation of the core and acts as a support, A core core cutting device, comprising: a second driving force transmission means for advancing and supporting a support member in response to a signal of a micom; The method of claim 3, wherein The core core cutting device, characterized in that the inclined surface for guiding the insertion and at the same time re-determining the position of the core at the tip of the support member. The method of claim 1, The core core cutting device, characterized in that it further comprises a feeder to enable continuous feeding of the core to the transfer means on one side of the base. The method of claim 5, The core part cutting device of the core type core, characterized in that the guide rail is inclined downward so as to pass through the seating portion of the base.