KR20220082476A - Wire winding apparatus - Google Patents

Abstract

The device according to the present invention includes a first bobbin in which a wire is wound, a second bobbin in which the wire is unwound and rewound, a first motor driven by an electrical signal, and a second motor , An actuator connected to one shaft of the first motor to linearly move by driving of the first motor, and a wire for transferring the wire from the first bobbin to the second bobbin based on the linear motion of the actuator a guide frame, wherein the wire guide frame is fixed to the actuator, and the second bobbin is connected to one shaft of the second motor to rotate by driving the second motor.

Description

Wire winding device {WIRE WINDING APPARATUS}

The present invention relates to a wire winding device, and more particularly, to a winding device capable of automatically winding a wire on a bobbin.

In general, the wire is supplied in a wound state on the bobbin, and the supply may be made while the wire is sequentially unwound from the bobbin. In this case, it may be necessary to supply the wire wound in the electric discharge machining to another bobbin.

Electrical Discharge Machining (EDM) is a processing method that removes conductive materials using sparks and processes them. Among electric discharge machining, wire electric discharge machining (Wire EDG, WEDG) using a brass wire is a method of processing a material with a wire after an electric current flows through the wire. Wire electric discharge machining using brass wire is the most widely used machining method.

The wire bobbin (skein) for electric discharge machining, which is usually sold, is quite large and heavy in units of 5 kg, so it can be applied to industrial electric discharge machines, but it is not easy to use immediately for research or micro-processing machines. Therefore, for wire electric discharge machining, it is necessary to wind a large-capacity large wire bobbin around a small wire bobbin.

Currently, these operations are being performed manually. If the operation of winding a brass wire bobbin on a small-sized wire bobbin is performed manually, the following problems may occur.

First, the gap between the wires may be wound inconsistently, which may adversely affect the product's performance. In micro-unit machining, it is important that the fineness of the wire wound on the bobbin and a constant tension act when it is wound.

Second, it can take a considerable amount of time to work. When the above-described operation is performed manually, it may take several hours or more, and thus efficiency may be significantly lowered. Therefore, there is a need for a method that can automate this and put it into practical use at a low price.

An object of the present invention for solving the above problems is to provide a device capable of safely and effectively supplying a wire. Another object of the present invention for solving the above problems is to provide an apparatus capable of automatically winding a wire on a bobbin.

The device according to the present invention for achieving the above object is a first bobbin in which a wire is wound, a second bobbin in which the wire is unwound and rewound, a first motor driven by an electrical signal ( motor) and a second motor, an actuator connected to one shaft of the first motor and linearly moved by driving of the first motor, and the wire from the first bobbin based on the linear motion of the actuator and a wire guide frame for transporting two bobbins, wherein the wire guide frame is fixed to the actuator, and the second bobbin is connected to one shaft of the second motor to rotate by driving the second motor do it with

Here, the wire guide frame includes a first pulley, a second pulley, and a third pulley positioned to be spaced apart from each other, and the wire unwound from the first bobbin is the first pulley and the second pulley. and sequentially wound around the third pulley.

Here, it characterized in that it further comprises a tensioner (Tensioner) connected to the second pulley.

Here, the ratio of the first tension acting between the first pulley and the second pulley, the second tension acting between the second pulley and the third pulley, and the third tension acting on the tensioner is 1:1:( 1.5 to 1.6).

Here, it is characterized in that the rotation ratio of the first motor and the second motor is 1: (19 to 21).

Here, it characterized in that it further comprises a stand for fixing one shaft of the first bobbin.

Here, it characterized in that it further comprises a body frame for accommodating and supporting the components included in the device.

According to the present invention, it is possible to increase the efficiency of the electric discharge machining by allowing the wire sold as a prototype in the electric discharge machining to be wound on the bobbin by the required amount.

In addition, the device according to the present invention can be effectively used in various fields such as manufacturing inductors and solenoid coils. When the device according to the present invention is used for an inductor, it is possible to make the coils are tightly wound at regular intervals. In addition, when the device according to the present invention is used for manufacturing a solenoid coil, it is possible to easily produce a solenoid coil having a required amount of current.

However, the effects that can be achieved by the wire winding device according to the embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned are common knowledge in the art to which the present invention belongs from the description below. It will be clearly understood by those who have

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included as a part of the detailed description to help the understanding of the present invention, provide embodiments of the present invention, and together with the detailed description, explain the technical spirit of the present invention.
1 is a block diagram illustrating a wire winding device.
2 and 3 show a wire winding device.
4 shows a body frame.
5 shows a first bobbin and a bobbin stand.
6 shows an actuator and a second motor.
7 shows a wire guide frame.
8 illustrates a structure in which a wire is transported.
9 is a diagram illustrating the amount of wire transferred to the second bobbin.
10 illustrates an operation process of the wire winding device.
11 shows motor control information.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, 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 this 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 art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate the overall understanding, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

1 is a block diagram illustrating a wire winding device, and FIGS. 2 and 3 are diagrams illustrating a wire winding device.

1 to 3 , the wire winding device 1000 includes a body frame 100 , a first bobbin 200 , a second bobbin 300 , a first motor 400 , a second motor 500 , It may include a bobbin stand 600 , an actuator 700 , and a wire guide frame 800 . The wire winding device 1000 may be a device for unwinding the wire wound on the first bobbin 200 and rewinding the wire on the second bobbin 300 . The wire winding device 1000 is wound around the first bobbin 200 by the linear motion of the actuator 700 connected to the first motor 400 and the rotational motion of the second bobbin 300 connected to the second motor 500 . It may be a device for rewinding the wire to the second bobbin 300 . Hereinafter, each component constituting the wire winding device 1000 will be described in detail.

4 shows a body frame.

Referring to FIG. 4 , the body frame 100 may be formed of an aluminum profile 110 , an acrylic plate 120 , and a die-casting bracket 130 . The body frame 100 may be a box-shaped structure formed by combining an aluminum profile 110 , an acrylic plate material 120 , and a die-casting bracket 130 . The body frame 100 may be configured with an interior capable of accommodating a power supply accessory and an exterior capable of supporting the driving accessory.

A control unit (not shown) capable of controlling the motors 400 and 500 may be provided inside the body frame 100 . The control unit may mean a wiring set, and the wiring set may include a power supply (not shown), a Mach board (not shown), and a motor driver (not shown). The acrylic plate 120 may be formed of an opaque material. Accordingly, the control unit located inside the body frame 100 may not be visually exposed when viewed from the outside.

The acrylic plate 120 positioned on the upper surface of the body frame 100 may be formed to facilitate opening and closing. Accordingly, repair and inspection can be easily performed. The body frame 100 may have a strength that can withstand the impact caused by the load and motion of the driving accessories positioned on the body frame 100 . As an embodiment, the number of the aluminum profile 110 may be 12, the number of the acrylic plate 120 may be 6, and the number of the die-casting bracket 130 may be 16.

On the other hand, the first bobbin 200 , the second bobbin 300 , the first motor 400 , the second motor 500 , and the bobbin stand 600 which are driving accessories are located outside (ie, on the upper side) of the body frame 100 . ), the actuator 700 and the wire guide frame 800 may be located.

5 shows a first bobbin and a bobbin stand.

Referring to FIG. 5 , the bobbin stand 600 may include a round bar 610 , a shaft holder 620 , and a plate material 630 . The first bobbin 200 may be a bobbin in which a wire is wound. The first bobbin 200 may be fixed to the bobbin stand 600 . The bobbin stand 600 may be configured to mount the first bobbin 200 .

The first bobbin 200 may be vertically coupled to the round bar 610 . The first bobbin 200 may be vertically coupled to the round bar 610, and may rotate about an axis. The first bobbin 200 may unwind the wound wire through a rotational motion. The rotational motion of the first bobbin 200 may be a discontinuous rotational motion due to a moment due to the weight of the first bobbin 200 , but may be offset by friction due to the weight of the first bobbin 200 .

6 shows an actuator and a first motor.

Referring to FIG. 6 , the actuator 700 may include a screw 710 , a coupling 720 , and a linear motion (LM) guide 730 . The actuator 700 may be connected to the first motor 400 . The first motor 400 may be driven by an electrical signal transmitted from the control unit. The actuator 700 may perform a linear motion by driving the first motor 400 based on an electrical signal. The rotational motion of the first motor 400 may be converted into a linear motion (linear reciprocating motion) of the actuator 700 .

The axis of the screw 710 included in the actuator 700 may be aligned with the axis of the first motor 400 . Power may be transmitted by the screw 710 , the coupling 720 , and the LM (Linear Motion) guide 730 , and the rotational force may be limited at the same time. Meanwhile, the first motor 400 may be connected to the actuator 700 through a bracket.

7 shows a wire guide frame.

Referring to FIG. 7 , the wire guide frame 800 may include a first pulley 810 , a second pulley 820 , a third pulley 830 , and a tensioner 840 . The wire guide frame 800 may be fixed to the actuator 700 . For example, the wire guide frame 800 may be mounted and fixed on the actuator 700 . The first pulley 810 , the second pulley 820 , and the third pulley 830 may be positioned with a predetermined interval therebetween. The wire may be sequentially wound around the first pulley 810 , the second pulley 820 , and the third pulley 830 .

On the other hand, based on the linear motion of the actuator 700 by the wire guide frame 800 and the rotational motion by the second bobbin 300 , the wire can be transferred from the first bobbin 200 to the second bobbin 300 . have. A structure in which a wire is transferred to the second bobbin 300 will be described with reference to FIGS. 8 and 9 .

8 illustrates a structure in which a wire is transferred, and FIG. 9 illustrates a transfer amount of a wire transferred to the second bobbin.

8 and 9 , the wire guide frame 800 may have a structure such that a constant tension is applied to the wire from the first bobbin 200 to the second bobbin 300 . The linear motion of the actuator 700 by the wire guide frame 800 may be due to the first motor 400 moving in the X-axis direction as the wire is rewound. The linear motion of the actuator 700 may be due to the linear reciprocating motion of the first motor 400 .

The tension T may mean a tension in which the wire from the first bobbin 300 constantly acts between the pulleys of the wire guide frame 800 . The super tension F of the tensioner 840 may be a force acting on the rod. T and F can be estimated by calculating the moment of the rod, and F can be equal to about 1.5T. As an embodiment, the first tension acting between the first pulley 810 and the second pulley 820 , the second tension acting between the second pulley 820 and the third pulley 830 , and the tensioner 840 . The ratio of the acting third tension may be 1:1:(1.5 to 1.6). More preferably, F may be 90 N, and tension T may be 60 Nm. In this case, the ratio of the first tension, the second tension, and the third tension may be 1:1:1.5.

The rotational motion by the second bobbin 300 may be due to the second motor 500 moving in the Y-axis direction in the process of rewinding the wire. The rotational motion by the second bobbin 300 may be due to the constant-speed rotational motion of the second motor 500 .

The first motor 400 may perform a linear reciprocating motion, and the second motor 500 may perform a constant speed rotational motion. Therefore, when the optimal rotation ratio of both motors 400 and 500 is set, the second An optimal transfer amount of the wire rewound on the bobbin 300 may be determined. For example, if the thickness of the wire is 0.25 mm, X during one rotation of the first motor 400 because the feed amount of the second motor 500 should be 0.25 mm during one rotation of the second motor 500 It may be desirable for the axial feed length to be 5 mm. Accordingly, the rotation ratio of the first motor 400 and the second motor 500 may preferably be 1: (19 to 21), more preferably the first motor 400 and the second motor 500 It may be more preferable that the optimal rotation ratio is 1:20. In this case, the wire may be tightly rewound on the second bobbin 300 at regular intervals.

10 is a diagram illustrating an operation process of the wire winding device, and FIG. 11 is a diagram illustrating motor control information.

Referring to (a), (b), (c) and (d) of FIG. 10 in order, the linear motion of the actuator 700 by the wire guide frame 800 and the rotational motion by the second bobbin 300 It can be seen that the wire is efficiently wound from the first bobbin 200 to the second bobbin 300 based on . 11, G-code, which is control information of specific motors 400 and 500, is shown.

The methods according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the computer-readable medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software.

Examples of computer-readable media include hardware devices specially configured to store and carry out program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as at least one software module to perform the operations of the present invention, and vice versa.

Although it has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. will be able

Claims (7)

A first bobbin (Bobbin) in which the wire (Wire) is wound;
a second bobbin from which the wire is unwound and rewound;
a first motor and a second motor driven by an electrical signal;
an actuator connected to one shaft of the first motor to linearly move by driving the first motor; and
and a wire guide frame for transferring the wire from the first bobbin to the second bobbin based on the linear motion of the actuator;
The wire guide frame is fixed to the actuator, and the second bobbin is connected to one shaft of the second motor to rotate by driving the second motor. The method according to claim 1,
The wire guide frame includes a first pulley, a second pulley, and a third pulley positioned to be spaced apart from each other, and the wire unwound from the first bobbin includes the first pulley, the second pulley, and the The device, characterized in that it is wound sequentially on the third pulley. 3. The method according to claim 2,
Device, characterized in that it further comprises a tensioner (Tensioner) connected to the second pulley. 4. The method according to claim 3,
a first tension acting between the first pulley and the second pulley;
a second tension acting between the second pulley and the third pulley;
The device, characterized in that the ratio of the third tension acting on the tensioner is 1:1: (1.5 to 1.6). The method according to claim 1,
The device, characterized in that the rotation ratio of the first motor and the second motor is 1: (19 to 21). The method according to claim 1,
The device, characterized in that it further comprises a stand for fixing one shaft of the first bobbin. The method according to claim 1,
The device of claim 1, further comprising a body frame for receiving and supporting components included in the device.

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