KR101701611B1

KR101701611B1 - Meterial guide apparatus

Info

Publication number: KR101701611B1
Application number: KR1020150072916A
Authority: KR
Inventors: 황지성; 박민규; 박주일; 박홍기; 백승만; 이황배; 임순묵
Original assignee: 현대제철 주식회사
Priority date: 2015-05-26
Filing date: 2015-05-26
Publication date: 2017-02-02
Also published as: KR20160139096A

Abstract

An invention on a material guide apparatus is disclosed. The material guide device of the present invention comprises: a lower pinch roll; an upper pinch roll provided on the upper side of the lower pinch roll; and a material passing between the lower pinch roll and the upper pinch roll, And a moving device for moving the workpiece guide to the first point and the second point when the workpiece is guided in the horizontal direction and guiding the workpiece in the downward direction when the workpiece is positioned at the second point.

Description

{METERIAL GUIDE APPARATUS}

The present invention relates to a material guide apparatus, and more particularly to a work guide apparatus for guiding a work to a mandrel side.

Typical steelmaking consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a casting process to transform solid iron into solid, and a rolling process to make iron into steel or wire. The rolling process is a series of processes in which the slab is charged into a heating furnace, reheated to a temperature suitable for rolling, extracted, and subjected to a tensile rolling and a thickness rolling through a roughing mill and finally rolled into a product having a thickness desired by a customer in a finishing mill .

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Registered Patent No. 716464 (registered on May 3, 2007, entitled "Winding-up Tip Control Apparatus for Hot Strip").

According to an embodiment of the present invention, there is provided a material guiding apparatus capable of stably guiding a material to a mandrel side located forwardly or downwardly.

The material guide apparatus according to the present invention comprises: a lower pinch roll; An upper pinch roll installed on the upper side of the lower pinch roll; A workpiece guide which contacts the workpiece passed between the lower pinch roll and the upper pinch roll and guides the workpiece in a horizontal direction when positioned at a first point and guides the workpiece downward when positioned at a second point; And a moving device for moving the workpiece guide to the first point and the second point.

Also, the work guide may include: a main body connected to the moving device; A horizontal guide portion formed flat on the upper portion of the main body portion and guiding the workpiece in a horizontal direction; And a downward guide formed to be curved at a lower portion of the main body and guiding the work downward.

The downward guide includes a first contact positioned on a mandrel on which the work is wound and contacting a tangent line connecting the mandrel and the lower pinch roll at the shortest distance; A second contact positioned on the lower pinch roll and contacting a tangent line connecting the mandrel and the lower pinch roll at the shortest distance; And a third contact located on the lower pinch roll and in contact with the workpiece moved in the horizontal direction.

Further, the work guide may include an extension connected to the main body and forming a continuous upper surface with the horizontal guide, And a stretchable moving part connecting the extension part to the main body part and supporting the extension part movably in a horizontal direction.

Further, the stretching and moving part includes a guide bar connected to the main body part and guiding horizontal movement of the extending part; And an elastic pressing member elastically pressing the extension in a direction away from the main body.

The moving device may further comprise: a cylinder member; A pivotal support portion for rotatably supporting the cylinder member; A hinge connection portion for hinge-connecting the cylinder member to the workpiece guide; And a guide moving part connected to the workpiece guide and moved along the guide rail by the expansion and contraction operation of the cylinder member.

Further, it is preferable that the present invention further includes a guide rail for guiding the movement of the work guide to a set path.

The guide rail includes a first point at which the upper portion of the workpiece guide is in contact with the workpiece, a second point at which the lower portion of the workpiece guide is in contact with the workpiece, It is preferable to have a shape connecting three points continuously.

According to the workpiece guide apparatus of the present invention, the workpiece can be guided to the mandrel side located in front of the lower pinch roll and the upper pinch roll while changing the position of the workpiece guide to the first point, the second point, And can be stably guided to the mandrel side located below the roll and the upper pinch roll.

1 is a perspective view schematically showing a work guide apparatus according to an embodiment of the present invention.
2 is a side view schematically showing a work guide apparatus according to an embodiment of the present invention.
3 is a conceptual diagram illustrating an example of using a material guide apparatus according to an embodiment of the present invention to guide a workpiece forward.
4 is a conceptual diagram illustrating an example of using a material guide apparatus according to an embodiment of the present invention to guide a material having a first thickness downward.
5 is a conceptual diagram for explaining an example of using a material guiding apparatus according to an embodiment of the present invention to guide a material having a second thickness downward.
FIG. 6 is a conceptual diagram illustrating an example of using a material guide apparatus according to an embodiment of the present invention to guide a material having a third thickness downward. FIG.
FIG. 7 is a conceptual view illustrating a shape of a guide rail and a guide moving part of a work guide apparatus according to an embodiment of the present invention.
8 is a conceptual view illustrating a change in length of a work guide of a work guide apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a work guide apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a work guide apparatus according to an embodiment of the present invention. FIG. 2 is a side view schematically showing a work guide apparatus according to an embodiment of the present invention. 1 is a conceptual diagram illustrating an example of using a material guide device according to an embodiment to guide a material forward; FIG.

FIG. 4 is a conceptual view for explaining an example of using a material guide apparatus according to an embodiment of the present invention to guide a workpiece having a first thickness downward, FIG. 5 is a schematic view illustrating a workpiece guide apparatus according to an embodiment of the present invention, FIG. 6 is a schematic view illustrating a use example in which a material having a third thickness is guided downward using a material guide apparatus according to an embodiment of the present invention. FIG. FIG.

FIG. 7 is a conceptual view for explaining a shape of a guide rail and a guide moving part of a work guide apparatus according to an embodiment of the present invention, FIG. 8 is a view showing a change in length of a work guide of a work guide apparatus according to an embodiment of the present invention, FIG.

1 and 2, a work guide apparatus 1 according to an embodiment of the present invention includes a lower pinch roll 10, an upper pinch roll 20, a workpiece guide 30, a moving device 40, , And a guide rail (50).

The roller table 4 is arranged along the conveying direction of the blank 2 and the mandrels 3 are arranged on the lower side of the roller table 4 along the traveling direction of the blank 2. The lower pinch roll 10 and the upper pinch roll 20 guide the material 2 on the roller table 4 toward the mandrel 3. The lower pinch roll 10 and the upper pinch roll 20 are set So as to correspond to each of the plurality of mandrels 3.

The upper pinch roll 20 is provided so as to be movable up and down on the front side of the lower pinch roll 10 and the material 2 being conveyed forward on the roller table 4 is supported by the lower pinch roll 10, And passes between the rolls 20. The workpiece 2 having passed between the lower pinch roll 10 and the upper pinch roll 20 is brought into contact with the upper or lower portion of the workpiece guide 30 and is guided forward or downward.

When the work 2 is brought into contact with the lower portion of the workpiece guide 30 formed downward, the workpiece 2 is guided downward toward the mandrel 3 located below the workpiece. The material 2 is guided to the side of the lower pinch roll 10 and the upper pinch roll 20 located in front of the material guide bar 30, that is, toward the other mandrel 3 in front.

The material guide 30 is a device for guiding the material 2 passed between the lower pinch roll 10 and the upper pinch roll 20 forward or downward as required, And is movably installed along the guide rail 50 by operation. 1 and 8, a work guide 30 according to an embodiment of the present invention includes a main body 31, a horizontal guide 32, a downward guide 33, an extension 35, (37).

The body portion 31 is formed as a frame that supports the contact force with the workpiece 2 and extends in the axial direction of the lower pinch roll 10 and the upper pinch roll 20, Lt; / RTI >

The horizontal guide portion 32 is formed flat on the upper portion of the main body portion 31. 3, when the horizontal guide portion 32 is positioned on the horizontal line with the upper end portion of the roller table 4, that is, on the pass line of the work 2, or on the lower side thereof, The material 2 passed between the upper pinch roll 10 and the upper pinch roll 20 is guided in the horizontal direction while being supported at the lower end by the horizontal guide portion 32. [ In the description of the present invention, the position of the workpiece guide 30, which guides the workpiece 2 in the horizontal direction as shown in Fig. 3, is referred to as a first point P1.

The downward guide portion 33 is formed at a lower portion of the main body portion 31 so as to be curved downward toward the front side. The material 2 having passed between the lower pinch roll 10 and the upper pinch roll 20 when the downward guide portion 33 is located so as to obstruct the forward conveying path of the work 2 is guided by the downward guide portion 33, And is guided to the lower mandrel 3 side. Referring to FIG. 2, the downward guide 33 according to an embodiment of the present invention includes a first contact A, a second contact B, a circular arc (arc) passing through the third contact C, ).

The first contact A is a contact tangent to the mandrel 3 among tangential lines T connecting the mandrel 3 and the lower pinch roll 10 at the shortest distance and the second contact B contacts the lower pinch roll 10 ). The third contact C corresponds to an upper end portion of the outer surface portion of the lower pinch roll 10 in contact with the workpiece 2 to be horizontally moved, that is, a contact point between the feed path of the workpiece 2 and the lower pinch roll 10 .

The first contact point A, the second contact point B and the third contact point C are all located on an arc having a radius R and the downward guide part 33 has a curvature corresponding to the radius R . The material 2 that is horizontally moving forward enters the gap between the downward guide portion 33 and the lower pinch roll 10 at the third contact C and then comes into contact with the downward guide portion 33, Can be stably moved toward the mandrel 3 along a path parallel to or overlapping with the arc of Fig. 2 on the curved surface of the part 33. [

An upper interference preventing portion 34a having an upward sloping shape is formed at an upper portion of one end portion of the main body portion 31 facing the lower pinch roll 10. The end portion of the material 2 being guided in the horizontal direction can be moved horizontally smoothly toward the horizontal guide portion 32 side by the upper interference preventing portion 34a when the end portion of the workpiece 2 is in contact with the body portion 31. [

A lower interference preventing portion 34b is formed at a lower portion of one end portion of the main body portion 31 facing the lower pinch roll 10 so as to be inclined downward toward the front side. When the end of the downwardly guiding material 2 contacts the main body 31, it can be moved downward smoothly toward the downward guide portion 33 side by the lower interference preventing portion 34b.

The extension 35 is coupled to the other end of the body 31 to form a continuous upper surface with the horizontal guide 32. The material 2 being conveyed in the horizontal direction is guided forward in a state in which the main body portion 31 and the extending portion 35 are continuously supported at the lower end.

The expansion and contraction portion 37 supports the extension portion 35 in a horizontal direction that is close to or spaced from the body portion 31. That is, It is a device to adjust the length. Referring to FIG. 8, the expansion and contraction portion 37 includes a guide bar 38 and an elastic pressing member 39 according to an embodiment of the present invention.

Both ends of the guide bar 38 are installed so as to extend over the body portion 31 and the extended portion 25 and are provided so as to extend in the forward and backward directions so as to guide the forward and backward movement of the extended portion 35. The elastic pressing member 39 is provided between the main body portion 31 and the extending portion 35 and elastically presses the extending portion 35 in a direction away from the main body portion 31. In the embodiment of the present invention, a coil spring is applied to the elastic pressing member 39 and is fitted around the guide bar 38.

In the description of the present invention, the position of the workpiece guide 30, which guides the workpiece 2 having the first thickness downward as shown in FIG. 4, is referred to as a second point P2. 5, the position of the workpiece guide 30 for guiding the workpiece 2 having the second thickness that is thicker than the first thickness downward is referred to as a third point P3, As shown in the figure, the position of the workpiece guide 30, which guides the workpiece 2 having the third thickness that is thicker than the second thickness, is referred to as a fourth point P4.

When the workpiece guide 30 is positioned at the first point P1, the workpiece guide 30 is positioned close to the front portion of the lower pinch roll 10, and the workpiece 2 is placed on the workpiece table 30 And passes between the upper pinch rolls 20. When the workpiece guide 30 is positioned at the second point P2, the workpiece guide 30 is positioned close to the front portion of the upper pinch roll 20, And passes between the lower pinch rolls 10.

When the thickness of the material 2 gradually increases, the upper pinch roll 20 is moved upward in accordance with the thickness change of the material 2 during forward guidance of the material 2, And when the material 2 is guided downward, the upper pinch roll 20 and the workpiece guide 30 are moved upward together corresponding to the thickness change of the workpiece 2, It can be implemented smoothly.

The upper pinch roll 20 is positioned on the upper side of the front side of the lower pinch roll 10 so that the second point P2 is located on the upper front side of the first point P1. The third point P3 is positioned above the second point P2 and the fourth point P4 is positioned above the third point P3. That is, the third point P3 and the fourth point P4 are located on the same vertical line as the second point P2. The third point P3 is a point at which the extension 35 of the workpiece guide 30 moved in the vertical direction between the second point P2 and the fourth point P4 contacts the roller table 4 It means the position to be released.

The workpiece guide 30 may have a horizontal length corresponding to a spacing distance between the lower pinch roll 10 and the roller table 4. The material 2 is stably guided forward without inflow of the end portion between the lower pinch roll 10 and the workpiece guide 30 and between the workpiece guide 30 and the roller table 4 .

As described above, when the workpiece guide 30 has a horizontal length corresponding to the spacing distance between the lower pinch roll 10 and the roller table 4, it moves from the first point P1 to the second point P2 Or may be interfered with the roller table 4 in the process of being moved in the opposite direction. At this time, the extension portion 35 is pushed against the contact force with the roller table 4 and is elastically moved to the side of the main body portion 31, and the material guide bar 30 is deformed to reduce its length as shown in Fig. 4 .

A roller contact portion 36 is formed at a portion of the extension portion 35 that is in contact with the roller table 4. The roller contact portion 36 is formed to be inclined in the tangential direction of the roller table 4 and can stably contact the roller table 4 without damaging the roller table 4. [ When the workpiece guide 30 moves from the first point P1 to the second point P2 or moves in the opposite direction, the roller contact portion 36 is in sliding contact with the roller table 4 And is moved downward toward the rear.

The moving device 40 moves the workpiece guide 30 to one of the set positions, for example, the first point P1, the second point P2, the third point P3, and the fourth point P4 . 1 to 3, a mobile device 40 according to an embodiment of the present invention includes a cylinder member 41, a rotation support portion 42, a hinge connection portion 43, and a guide moving portion 44.

The cylinder member 41 is provided so as to extend in the up-and-down direction, and is driven so that its length is expanded and contracted. The rotation supporting portion 42 is a portion for rotatably supporting the cylinder member 41, and a rotary shaft for rotatably supporting the upper portion of the cylinder member 41 can be applied. The hinge connection portion 43 hinges the lower portion of the cylinder member 41 to the workpiece guide 30. [ The guide moving part 44 is moved along the guide rail 50 by the expansion and contraction operation of the cylinder member 41 and is connected to the workpiece guide 30.

The guide rail 50 guides the movement of the workpiece guide 30 to the set path. 3 to 7, a guide rail 50 according to an embodiment of the present invention includes a guide rail 50 having a first point P1, a second point P2, a second point P2, The third point P3, and the fourth point P4. Referring to FIG. 7, the guide rail 50 according to an embodiment of the present invention includes an inclined rail portion 51 and a vertical rail portion 52.

The inclined rail portion 51 is formed to extend from the first point P1 to the second point P2 located on the upper front side of the first point P1. The inclined rail portion 51 may extend at a predetermined angle of inclination and may be extended by a curve having a constant curvature. The vertical rail part 52 is connected to the front part of the inclined rail part 51 in a continuous manner and is formed to extend in the vertical direction from the second point P2 to the fourth point P4.

In order to sequentially move the workpiece guide 30 in the order of FIGS. 3, 4, 5, and 6, the guide moving part 44 is moved along the guide rail 50 The first point P1, the second point P2, the third point P3, and the fourth point P4.

7, the upper and lower ends of the guide moving part 44 are supported by the inclined guide part 30 so as not to be rotated in any direction in the state of being fitted in the guide rail 50, And is in surface contact with the upper surface portion and the bottom surface portion of the inclined rail portion 51 in a state where the inclined rail portion 51 is positioned.

The left end portion and the right end portion of the guide moving portion 44 extend in parallel with the vertical rail portion 52 and extend in the left and right side portions of the vertical rail portion 52, Surface contact. The lower end portion of the guide moving portion 44 is in surface contact with the bottom surface portion of the inclined rail portion 51 while the guide moving portion 44 is located at the second point P2, And is in surface contact with the surface.

As described above, the guide moving part 44 has a parallelogram shape and a rhombic cross-sectional shape, and at least two end portions thereof are in surface contact with the guide rail 50, so that any rotation thereof is restrained, The horizontal position of the workpiece guide 30 can be stably maintained and supported by using the eccentric portion 44. [

According to the material guide apparatus 1 of the present invention having the above-described structure, the position of the workpiece guide 30 can be moved to the first point P1, the second point P2, etc. by using the moving device 40 The material 2 is guided to the mandrel 3 side located at the front side of the lower pinch roll 10 and the upper pinch roll 20 while the material 2 is being changed while the lower pinch roll 10 and the upper pinch roll 20, (3).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

1: Material guide device 2: Material
3: Mandrel 4: Roller table
10: lower pinch roll 20: upper pinch roll
30: work guide 31:
32: horizontal guide portion 33: downward guide portion
34a: upper interference preventing portion 34b: lower interference preventing portion
35: extension part 36: roller contact part
37: New Construction East 38: Guide Bar
39: elastic pressing member 40: moving device
41: cylinder member 42:
43: hinge connection part 44: guide moving part
50: guide rail 51: inclined rail part
52: Vertical rail part A: 1st contact
B: second contact point C: third contact point
P1: first point P2: second point
P3: Third point P4: Fourth point
T: Tangent

Claims

Lower pinch roll;
An upper pinch roll installed on the upper side of the lower pinch roll;
A workpiece guide which contacts the workpiece passed between the lower pinch roll and the upper pinch roll and guides the workpiece in a horizontal direction when positioned at a first point and guides the workpiece downward when positioned at a second point;
A moving device for moving the workpiece guide to the first point and the second point; And
And a guide rail for guiding the movement of the work guide to a set path,
The material guide plate
A body coupled to the mobile device;
A horizontal guide portion formed flat on the upper portion of the main body portion and guiding the workpiece in a horizontal direction;
A downward guide formed to be curved at a lower portion of the main body and guiding the material downward;
An extension part connected to the body part and forming a continuous upper surface with the horizontal guide part; And
And a stretchable moving part connecting the extended part to the main body part and supporting the extended part movably in a horizontal direction,
Wherein the expansion and contraction portion is provided between the main body portion and the extension portion and includes a guide bar for guiding the horizontal movement of the extension portion so as to surround the periphery of the guide bar, And an elastic biasing member for biasing the biasing member
The upper portion of the main body portion has an upper interference preventing portion formed on an upper end of the end portion facing the lower pinch roll and inclined upwardly toward the horizontal guide portion. A lower portion of the end portion facing the lower pinch roll is downward A lower interference preventing portion having an inclined shape is formed,
Wherein the guide rail includes a first point at which an upper portion of the workpiece guide is in contact with the workpiece, a second point at which a lower portion of the workpiece guide contacts the workpiece, a third point located on a vertical line with the second point, And a fourth point located on the upper side of the third point,
Wherein the guide rail includes a sloped rail part extending from the first point to the second point at a predetermined angle and connected to the sloped rail part in a continuous manner and extending vertically from the second point to the fourth point And a vertical rail portion which is formed on the upper surface of the guide rail.

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The method according to claim 1,
The downward-
A first contact positioned on a mandrel on which the work is wound and in contact with a tangent line connecting the mandrel and the lower pinch roll at the shortest distance;
A second contact positioned on the lower pinch roll and contacting a tangent line connecting the mandrel and the lower pinch roll at the shortest distance; And
And a third contact located on the lower pinch roll and in contact with the workpiece moved in a horizontal direction, wherein the third contact has a curved shape corresponding to an arc passing through the third contact.

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The method according to claim 1,
The mobile device comprising:
A cylinder member;
A pivotal support portion for rotatably supporting the cylinder member;
A hinge connection portion for hinge-connecting the cylinder member to the workpiece guide; And
And a guide moving unit connected to the workpiece guide and being moved along the guide rail by an expansion and contraction operation of the cylinder member.

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