KR102603790B1 - wire drawing machine - Google Patents

Abstract

The present invention discloses a drawing device for wire, comprising a winder on which a wire is wound, a first rolling section installed on a base frame and through which the wire leading from the winder passes, and whose cross-section is primarily processed into a square shape; A tension maintaining roller section in which a plurality of rollers are disposed to maintain the tension of the wire drawn from the first rolling section, and a second rolling section so that the cross section becomes square while passing the wire connected from the tension maintaining roller section once more. It includes a second rolling unit for processing, wherein the first rolling unit and the second rolling unit include a rolling roller frame installed perpendicularly on the base frame, installed on the front of the rolling roller frame, and having a certain thickness. It includes a rolling roller plate provided with criss-cross grooves, and a rolling roller unit installed on the top, bottom, left, and right of the criss-cross grooves to press the wire from all directions and process it into a square cross-section.

Description

Drawing device for wire {wire drawing machine}

Embodiments of the present disclosure relate to a drawing device for a wire in which the wire cross section of a round bar is drawn in a rectangular shape.

In general, a drawing machine passes semi-finished products such as rods, pipes, and wires through a drawing die with a tapered hole and draws them to the minimum cross-sectional size of the hole.

Drawing is usually performed at room temperature, and a lot of heat is generated due to deformation during processing. In drawing, rods and wires are mainly obtained, and there are cases where the diameter and wall thickness of the pipe are adjusted using a mandrel, etc., and there are cases where only the diameter of the pipe is adjusted without a mandrel.

Looking at a conventional drawing machine, as shown in FIG. 1, a rolling roller 10, a clamp 20, and a drawing mold 30 are installed on the frame 50 to perform a rolling process using a rolling roller and a drawing mold. The drawing process is performed, and the clamp 20 clamps one end of the metal material and is installed to enable reciprocating movement, so that it is pulled out from the drawing mold and formed.

In recent years, many products have been produced by drawing the wire so that its cross-section is square using the above-described drawing machine.

In the case of square cross-sections, they are produced in large quantities because they have a high spring coefficient and can be used efficiently in narrow spaces such as cell phones.

Precision technology is required to draw the cross section of the wire into a square shape.

Figure 2 schematically shows a rolling roller for drawing wire into a square shape. The upper and lower rolling rollers 12 and 14 are pressed with the left and right rolling rollers 16 and 18 to form a round bar wire. It is drawn and processed so that the cross section is square.

However, it is difficult to align the centers of the opposing rolling rollers, and if the rolling rollers are slightly off center, the rolling rollers may be damaged, causing errors in wire drawing.

Republic of Korea Patent Publication No. 10-2009-0056845

Embodiments of the present disclosure are intended to provide a wire drawing device that improves the problems described above, and draws the wire of a round bar into a square cross-section in a manner in which the upper and lower roller parts and the left and right roller parts are joined in the up, down, left, and right directions. The purpose is to provide a drawing device for wire that can be processed.

The technical problems to be achieved in the embodiments of the present disclosure are not limited to the matters mentioned above, and other technical problems not mentioned can be explained to those skilled in the art from the various embodiments described below. can be considered.

In the drawing device for wire according to the spirit of the present invention, a winder in which a wire is wound, a first rolling part installed on a base frame and primary processed into a square cross-section as the wire leading from the winder passes through; , a tension maintaining roller unit in which a plurality of rollers are arranged to maintain the tension of the wire drawn from the first rolling unit, and the wire leading from the tension maintaining roller unit is passed once more so that the cross section becomes square. It includes a second rolling unit for secondary processing, wherein the first rolling unit and the second rolling unit include a rolling roller frame installed perpendicularly on the base frame, installed on the front of the rolling roller frame, and having a certain thickness. It includes a rolling roller plate provided with criss-cross grooves, and a rolling roller unit installed on the top, bottom, left, and right of the criss-cross grooves to press the wire from all directions and process it into a square cross-section.

According to an embodiment of the present invention, the rolling roller unit is installed on the vertical upper side of the criss-cross groove to be movable in the center direction of the rolling roller plate, and includes an upper roller moving body that rotates idle, and the upper A lower roller moving body installed to be movable in the center direction of the rolling roller plate on the vertical lower side of the criss-cross groove facing the roller moving body and including a lower roller that rotates idle, and a lower roller moving body horizontally inside the criss-cross groove. A right roller moving body installed to be movable in the direction of the center of the rolling roller plate and including a right roller that rotates idle, and a right roller moving body facing the right roller moving body on the horizontal inner side of the criss-cross groove in the direction of the center of the rolling roller plate. It may be composed of a left roller moving body that is movably installed and includes a left roller that rotates idle.

According to an embodiment of the present invention, the upper roller, the lower roller, the right roller, and the left roller are formed to be gathered in the center direction of the rolling roller plate so that the wire passes while being pressed, and the roller body of the disk, It includes a roller tip extending from the roller body in a circumferential direction, wherein the roller tip includes a vertical surface extending from the roller body, a horizontal surface extending in a right angle direction from the vertical surface, an inclined surface extending obliquely from the horizontal surface, and an end side of the inclined surface. It may include a drawn surface that is formed and in contact with the wire.

According to another embodiment of the present invention, the roller tip may be replaceably installed from the roller body.

In the wire drawing device according to the present invention, the upper and lower roller parts and the left and right roller parts are aligned in the up, down, left, and right directions, so that the metal wire can be drawn into a square cross section using a drawing mold.

In addition, according to the embodiments of the present disclosure, it is possible to stably draw a metal wire using upper, lower, left, and right rolling rollers, which has the effect of improving productivity.

1 schematically shows a conventional drawing device;
Figure 2 schematically shows a rolling roller for drawing wire into a square;
3 is a configuration diagram showing the schematic configuration of a wire drawing device according to an embodiment of the present disclosure;
4 is a front view of a rolling roller plate in a wire drawing device according to an embodiment of the present disclosure;
Figure 5 is an enlarged view of the upper roller in the wire drawing device according to an embodiment of the present disclosure;
Figure 6 is an enlarged view of the roller tips of the upper roller, lower roller, right roller, and left roller in the wire drawing device according to an embodiment of the present disclosure;
7 is an enlarged view of the roller tips of the upper roller, lower roller, right roller, and left roller in the wire drawing device according to another embodiment of the present disclosure;
Figure 8 is a front view of the upper roller in the wire drawing device according to another embodiment of the present disclosure;
FIG. 9 is a partially enlarged cross-sectional view taken along line AA in FIG. 8.
FIG. 10 is a partially enlarged cross-sectional view taken along line BB in FIG. 8.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

The same reference numbers or symbols shown in each drawing of this specification indicate parts or components that perform substantially the same function. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

Terms used herein are used to describe embodiments and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. The existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

Terms containing ordinal numbers, such as “first,” “second,” etc., used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms refer to one It is used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related stated items or any of a plurality of related stated items.

Terms such as "... unit", "... unit", and "module" used in the specification refer to a unit that processes at least one function or operation, which is implemented as hardware, software, or a combination of hardware and software. It can be. Additionally, the terms “a or an,” “one,” “the,” and similar related terms are used herein in the context of describing various embodiments (particularly in the context of the claims below). Unless otherwise indicated or clearly contradicted by context, it may be used in both singular and plural terms.

The terms “top”, “bottom”, “front”, “rear”, etc. used below are defined based on the drawings, and the shape and location of each component are not limited by these terms.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

Here, FIG. 3 is a configuration diagram showing the schematic configuration of a wire drawing device according to an embodiment of the present disclosure, and FIG. 4 is a front view of a rolling roller plate in the wire drawing device according to an embodiment of the present disclosure. 5 is an enlarged view of the upper roller in the wire drawing device according to an embodiment of the present disclosure, and Figure 6 is an enlarged view of the upper roller, lower roller, right roller, and left roller in the wire drawing device according to an embodiment of the present disclosure. This is an enlarged view of the roller tip.

As shown in FIG. 3, the drawing device 1 for wire in the present invention includes a winder 110 in which the wire 2 is largely wound, and a first rolling section ( 200-1), a tension maintaining roller unit 400 arranged to maintain the tension of the wire 2, and a second rolling unit 200-2 for secondary processing of the wire 2. .

First, the winder 110 is rotatably installed on the floor, and a plurality of vertical bars 114 installed on the disk 112 are arranged along the circumferential direction, and the outer periphery of the plurality of vertical bars 114 The wire 2 is wound in this way.

As the disk 112 rotates, the wire 2 wound around the plurality of vertical rods 114 is released.

A base frame 100 having a certain area is installed at the rear end of the winder 110, and the base frame 100 is supported and installed on the floor.

Here, the first rolling unit 200-1, the tension maintaining roller unit 400, and the second rolling unit 200-2 may be installed on the base frame 100.

And at the rear end of the base frame 100, a drum winch 120 is installed on the bottom surface to wind the wire 2 to be drawn and serve to pull the wire 2 so that it is drawn.

The drum winch 120 forcibly winds the wire 2 in one-way rotation by a driving means such as a motor (not shown).

First, the tension maintaining roller unit 400 installed on the base frame 100 will be described. First, the wire 2 that passes through the first rolling unit 200-1 and undergoes primary processing is transferred to the second rolling unit 200-2. ) is handed over while maintaining tension.

Therefore, the tension maintaining roller unit 400 has a plurality of rollers arranged and can be installed in a zigzag manner in the up and down directions.

Here, the arrangement of the plurality of rollers is not limited.

And the first rolling section 200-1 and the second rolling section 200-2 are installed on the base frame 100 with the tension maintaining roller section 400 in between.

As the wire 2 passes through the first rolling section 200-1, the cross section of the round bar is first processed to have a square cross section, and then as it passes through the second rolling section 200-2, the wire 2 is Through secondary processing, the cross section can be drawn into a perfect square.

Before describing the first rolling unit 200-1 and the second rolling unit 200-2 in detail, the first rolling unit 200-1 and the second rolling unit 200-2 have the same configuration. Therefore, the first rolling unit 200-1 will be described as an example.

Again, as shown in FIG. 3, the first rolling unit 200-1 is installed on the rolling roller frame 210, which is installed vertically on the base frame 100, and on the front of the rolling roller frame 210, and is installed at a certain level. A rolling roller plate 220 that has a thickness and is provided with criss-cross grooves, and a rolling roller unit installed on the top, bottom, left, and right of the criss-cross grooves to press the wire 2 from all directions and process it into a square cross-section. It may include (300).

The rolling roller frame 210 is installed vertically on the base frame 100, and the rolling roller plate 220 may be installed on one side of the rolling roller frame 210, that is, one side facing the winder 110.

The rolling roller plate 220 will be described with reference to FIG. 4.

The overall frontal shape of the rolling roller plate 220 is polygonal, and as shown, it is octagonal, but is not limited thereto.

It may be circular or polygonal with a certain thickness.

In addition, criss-cross grooves extending from the center may be formed through the rolling roller plate 220.

It includes rolling roller units 300 that are installed on the top, bottom, left, and right of the criss-cross grooves to press the wire 2 from all directions and process it into a square cross-section.

For convenience of explanation, the criss-cross grooves, when viewed in FIG. 4, have an upper groove 222 at the center, a lower groove 224 extending perpendicularly from the upper groove 222, and a right groove 226 to the right. and a left groove 228 extending horizontally from the right groove 226.

Here, the rolling roller unit 300 includes an upper roller moving body 302 installed on the upper groove 222 side, a lower roller moving body 304 installed on the lower groove 224 side, and a lower roller moving body 304 installed on the right groove 226 side. It may be composed of a right roller moving body 306 and a left roller moving body 307 installed on the left groove 228 side.

The upper roller moving body 302 is installed inside the upper groove 222 and is movable along the upper groove 222 toward the center of the rolling roller plate 220.

The movement of the upper roller moving body 302 is possible by the knob 308 installed on the top of the rolling roller plate 220, and the bolt shaft 309 is connected to the knob 308 to raise and lower the upper roller moving body 302. It can be moved.

In this way, the lower roller moving body 304 can also be moved toward the center of the rolling roller plate 220 along the lower groove 224 by the knob 308 installed on the lower surface of the rolling roller plate 220, and the knob 308 A bolt shaft 309 is connected to the lower roller moving body 304 to move it up and down.

In addition, the right roller moving body 306 and the left roller moving body 307 are installed to be movable in the center direction of the rolling roller plate 220 along the right groove 226 and the left groove 228, and are installed on the right and left sides. It can be moved in the left and right directions by the protruding knob 308 and the bolt shaft 309.

The upper roller moving body 302, the lower roller moving body 304, the right roller moving body 306, and the left roller moving body 307 are formed in a row of the rolling roller plate 220 according to the thickness of the supplied wire 2. It can be moved toward the center of the cross groove.

In the present invention, they are each moved by knobs 308 connected to the moving body, but they can also be simultaneously linked like a chuck of a lathe.

Meanwhile, each of the upper roller moving body 302, the lower roller moving body 304, the right roller moving body 306, and the left roller moving body 307 is contacted with a wire 2 that substantially penetrates the round bar into a square cross-section. For processing, the upper roller 310 is installed in the upper roller movable body 302, the lower roller 304a is installed in the lower roller movable body 304, the right roller 306a is installed in the right roller movable body 306, and the left roller movable body 307 is installed. Left rollers 307a may be installed, respectively.

These upper rollers 310, lower rollers 304a, right rollers 306a, and left rollers 307a can each be rotated idle on the moving body.

In other words, it rotates due to rolling contact with the penetrating wire (2).

The upper roller 310, lower roller 304a, right roller 306a, and left roller 307a have the same shape, and the upper roller 310 will be described here as an example.

As shown in FIG. 5, the upper roller 310 may be composed of a circular roller body 311 and a roller tip 333 extending from the roller body 311 in the circumferential direction.

A rotating shaft 312 is integrally installed on the roller body 311 and installed on the upper roller moving body 302.

And the roller tip 333 is installed along the outer periphery of the roller body 311, and as shown in the enlarged view, a vertical surface 333a extending from the roller body 311 and a horizontal surface extending at a right angle from the vertical surface 333a ( It may include 333b), an inclined surface 333c extending obliquely from the horizontal surface 333b, and a drawing surface 333d formed on an end side of the inclined surface 333c and in contact with the wire 2.

Preferably, the internal angle between the inclined surface 333c and the inclined surface 333c is formed to be 90°, and the height of the drawn surface 333d from the inclined surface 333c may be approximately 0.6 mm.

The drawing surface 333d forms the upper surface of the square cross-section of the wire 2, and a processed straight surface is preferable.

Like the roller tip 333 of the upper roller 310, the roller tip 333 is installed to face the lower roller 304a, and the right roller 306a and the left roller 307a have different directions only. A roller tip 333 of the same shape is installed.

In Figure 6, the roller tip 333 of the upper roller 310 and the roller tip 333 of the lower roller 304a face each other, and the right roller (right roller) is located between the left and right sides of the upper roller 310 and the lower roller 304a. The roller tip 333 of 306a) and the roller tip 333 of the left roller 307a are joined to form a square space, and the wire 2 of the round bar passes through the square space and is processed into a square cross-section. You can lose.

The operation of the wire drawing device according to the present invention configured as described above will be described in detail again with reference to FIGS. 3 to 5.

First, the wire 2 around which the winder 110 is wound penetrates the first rolling part 200-1, the tension maintaining roller part 400, and the second rolling part 200-2 to the drum winch 120. Install it so that it is connected to .

Subsequently, in the first rolling unit 200-1, each upper roller moving body 302 is moved from the rolling roller plate 220 according to the thickness of the wire 2 toward the center along the upper groove 222 with the knob 308. It is moved using the bolt shaft 309, and in this way, the lower roller moving body 304, the right roller moving body 306, and the left roller moving body 307 are also moved by a preset amount according to the thickness of the wire 2.

Therefore, the drawing surface 333d of the roller tip 333 of the upper roller 310 is in contact with the upper surface of the passing wire 2, and the roller tip 333 of the lower roller 304a is in contact with the lower surface of the wire 2. do.

And between the upper roller 310 and the lower roller 304a, the right roller 306a and the left roller 307a are in contact with the wire 2 as the center.

The vertical surfaces 333a of each roller tip 333 and 304b of the upper roller 310 and the lower roller 304a are in close contact with the horizontal surfaces of the right roller 306a and the left roller 307a, and the inclined surface 333c is also in close contact with the right roller tip 333a. The inclined surfaces of the roller 306a and the left roller 307a are in close contact with each other in a square shape from all directions around the wire 2.

Subsequently, in the second rolling unit 200-2, like the first rolling unit 200-1, each roller moving body is moved toward the wire 2 for secondary processing of the wire 2.

When preparations for the drawing process of the wire 2 are completed, the drum winch 120 is operated to pull the wire 2, and the wire 2 passes through the first rolling section 200-1 and the roller tip ( It is drawn by the drawing surface 333d of 333), flows into the second rolling unit 200-2 with appropriate tension maintained through the tension maintaining roller unit 400, and flows into the second rolling unit 200-2. As it passes through 2), the cross section of the wire (2) can be pulled out to be perfectly square.

And Figure 7 according to another embodiment of the present invention is an enlarged view of the roller tips of the upper roller, lower roller, right roller, and left roller.

In Figure 7, rolling grooves 334 are formed at a certain depth on the vertical surface 333a of the roller tip 333 and the roller tip 304b of the lower roller 304a, respectively, and the right roller 306a and the left roller 307a. ) A rolling roller 335 corresponding to the rolling groove 334 may be installed on the horizontal surface 333b of the roller tip 333.

The roller tip 333 of the upper roller 310 and the roller tip 304b of the lower roller 304a face each other, and the right roller 306a is positioned between the left and right sides of the upper roller 310 and the lower roller 304a. When the roller tip (306b) and the roller tip (307b) of the left roller (307a) are joined to form a square space, the rolling roller is in the rolling groove (334) of the roller tips (333) (304b) facing in the vertical direction. (335) is located so that the coupling force between the roller tips 333 can be increased, and the friction force can be reduced through rolling contact.

Additionally, according to another embodiment of the present invention, the roller tip may be replaceably installed from the roller body.

The roller tip 333 is a part that contacts the wire 2 and is damaged or worn, requiring frequent maintenance.

FIG. 8 is a front view of an upper roller in a wire drawing device according to another embodiment of the present disclosure, FIG. 9 is a partially enlarged cross-sectional view taken along line A-A in FIG. 8, and FIG. 10 is a partially enlarged cross-sectional view taken along line B-B in FIG. 8.

Figure 8 is a front view of the upper roller 310 including the roller tip 333, and is a cross-section along line A-A.

Guide protrusions 336 are formed on both ends of the roller tip 333, and a guide groove 338 may be formed in the roller body 311 so that the guide protrusions 336 can be positioned.

A plurality of guide protrusions 336 and guide grooves 338 can be formed spaced apart along the circumferential direction, and the coupling force between the rotating roller tip 333 and the roller body 311 can be increased.

10 is a cross-sectional view taken along the line B-B. The roller body 311 is composed of a pair of separable facing bodies, and has a receiving groove 339 on the facing outer periphery that can accommodate the roller tip 333. It can be formed at a certain depth.

The receiving groove 339 may further have protruding grooves 339a formed at both ends.

The roller tip 333 includes a vertical surface 333a, a horizontal surface 333b extending in a right angle direction from the vertical surface 333a, an inclined surface 333c extending obliquely from the horizontal surface 333b, and an inclined surface 333c so as to be the same as the configuration of the example. It may be composed of a drawing surface (333d) formed on the end side and in contact with the wire 2, and a protrusion 337 on which a protruding groove 339a is located is formed integrally with the drawing surface (333d) at the other end. It can be.

Therefore, the roller tip 333 is placed in the inner receiving groove 339 of the roller body 311, which is opened as a pair, and the roller body 311 is placed oppositely on the other side, using fastening means 340 such as bolts. It is fixed.

The protruding jaw 337 of the roller tip 333 is located in the protruding groove 339a of the receiving groove 339.

Furthermore, an elastic buffer member 350 may be further installed between the receiving groove 339 of the roller body 311 and the roller tip 333.

As described above, the upper and lower roller parts and the left and right roller parts are aligned in the up, down, left and right directions, so that the metal wire can be drawn into a square cross-section using a drawing mold.

In addition, metal wire can be drawn stably using upper, lower, left, and right rolling rollers, thereby improving productivity.

In the above, specific embodiments are shown and described. However, it is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

1: Drawing device 2: Wire
100: base frame 110: winder
112: disc 114: vertical bar
120: drum winch 200-1, 200-2: first rolling section, second rolling section
210: rolling roller frame 220: rolling roller plate
222: upper groove 224: lower groove
226: Right groove 228: Left groove
300: Rolling roller unit 302: Upper roller moving body
304: lower roller moving body 304a: lower roller
304b: Roller tip 306: Right roller moving body
306a: Right roller 306b: Roller tip
307: Left roller moving body 307a: Left roller
307b: roller tip 308: knob
309: bolt axis
310: upper roller 311: roller body
312: rotation axis 333: roller tip
333a: vertical plane 333b: horizontal plane
333c: Inclined surface 333d: Drawn surface
334: Cloud groove 335: Cloud roller
336: Guide projection 337: Protrusion jaw
338: Guide groove 339: Accommodation groove
339a: Protrusion groove 340: Fastening means
350: Buffering member 400: Tension maintenance roller part

Claims (4)

A winder on which a wire is wound,
A first rolling section installed on a base frame and primarily processed into a square cross-section as the wire leading from the winder passes through it,
A tension maintaining roller unit in which a plurality of rollers are arranged to maintain the tension of the wire drawn from the first rolling unit, and
It includes a second rolling section that performs secondary processing so that the cross-section becomes square while passing the wire connected from the tension maintaining roller section once more,
The first rolling unit and the second rolling unit,
A rolling roller frame installed vertically on the base frame,
A rolling roller plate installed on the front of the rolling roller frame and having a certain thickness and provided with criss-cross grooves,
It includes rolling roller units installed on the top, bottom, left, and right sides of the criss-cross grooves to press the wire from all directions and process it into a square cross-section,
The rolling roller part,
An upper roller moving body installed on the vertical upper side of the criss-cross groove to be movable in the center direction of the rolling roller plate and including an upper roller that rotates idle,
A lower roller moving body installed on a vertical lower side of the criss-cross groove facing the upper roller moving body to be movable in the direction of the center of the rolling roller plate, and including a lower roller that rotates idle,
A right roller moving body that is installed horizontally inside the criss-cross grooves to be movable in the center direction of the rolling roller plate and includes a right roller that rotates idle;
It is installed on a horizontal inner side of the criss-cross groove facing the right roller moving body to be movable in the direction of the center of the rolling roller plate, and consists of a left roller moving body including a left roller that rotates idle,
The upper roller, the lower roller, the right roller, and the left roller are aligned to be gathered toward the center of the rolling roller plate so that the wire passes while being pressed,
A circular roller body,
It includes a roller tip extending from the roller body in a circumferential direction,
The roller tip is,
A vertical plane extending from the roller body,
a horizontal plane extending in a direction perpendicular to the vertical plane;
a slope extending obliquely from the horizontal plane, and
It includes a drawing surface formed on an end side of the inclined surface and in contact with the wire,
A rolling groove is formed at a certain depth on each vertical surface of the upper roller and the lower roller,
A drawing device for wire, wherein rolling rollers corresponding to the rolling grooves are installed on the horizontal surfaces of the roller tips of the right roller and the left roller.
delete delete According to paragraph 1,
A drawing device for wire, wherein the roller tip is replaceably installed from the roller body.