JP2017064733A - Wire feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire feeding device which can approximately vertically enter a wire into a liquid surface of molten metal when using a wire conveyance device that is not positioned immediately above the liquid surface of the molten metal including metal such as pig iron heated to a high temperature to be a liquid state in a wire feeder method.SOLUTION: A wire feeding device comprises: a wire conveyance device 2 which sandwiches a wire W to convey it; a curving guide pipe 3 which is positioned on the downstream side of the wire conveyance device 2 in a feeding direction of the wire W and into which the wire W is inserted; and a wire correction device 1 which is positioned on the downstream side of the guide pipe 3 in the feeding direction of the wire W and in which deformation of the wire W is corrected by a plurality of incorporated correction rollers 11.SELECTED DRAWING: Figure 1

Description

  The present invention is used when a wire is added to a molten metal in a wire injection method in which the wire is heated to a high temperature and added to a molten metal containing a metal such as pig iron that has become liquid by using a feeder that conveys the wire. The present invention relates to a wire transmission device.

  When a wire is added to the molten metal by the wire injection method, if the wire is allowed to penetrate perpendicularly to the surface of the molten metal, it becomes easier for the wire to penetrate deeper toward the bottom of the ladle where the molten metal is stored, and the effect of wire injection It is very important to maintain the straightness of the wire to be sent in terms of the increase of the wire. Furthermore, if the straightness of the wire to be sent can be maintained, the slag will not penetrate by the slag floating on the surface of the molten metal, and will reach the molten metal through this slag. Still important.

  Usually, the wire is wound in a coil shape as a compact shape for convenience of storage and handling, and the conveying device that pulls the wire from the coil and sends it to the molten metal in the ladle is placed between the coil and the molten metal and installed In order to avoid the restrictions of the location and the influence of heat and smoke from the molten metal, it may be placed in a location other than directly above the molten metal. In this case, the wire transmission from the conveying device to the molten metal is performed through a curved hollow member.

  For example, as such a wire sending device, Patent Document 1 discloses a configuration including a pinch roll for sending a wire and a guide pipe positioned downstream of the pinch roll in the sending direction. Patent Document 2 discloses a configuration including a transport device that transports a wire composed of a drive pinch roll and a driven pinch roll, and a curved guide pipe that is positioned downstream of the transport device in the wire feeding direction.

Japanese Patent Laid-Open No. 04-17612 JP 2011-348611 A

  However, in the wire feeder disclosed in Patent Document 1 and Patent Document 2, when the wire passes through the curved guide pipe, the wire that has passed through is bent by the curved guide pipe. Therefore, there is a problem that the wire discharged from the curved guide pipe is thrown in with respect to the molten metal surface.

  Therefore, in the wire feeder method, in the case of using a wire conveying device that is not located directly above the liquid level of the molten metal containing a metal such as pig iron that has been heated to a high temperature in the wire feeder method, the liquid level of the molten metal An object of the present invention is to provide a wire transmission device that can insert a wire substantially vertically.

  [1] That is, the present invention is a wire transport device that sandwiches and transports a wire, a curved guide pipe that is positioned downstream of the wire transport device in the wire feeding direction, and passes through the wire, It is located downstream from the guide pipe in the wire transmission direction, and is provided with a wire straightening device that corrects wrinkles of the wire with a plurality of built-in straightening rollers.

  [2] And the wire straightening device is positioned downstream of the first straightening roller in the wire feeding direction from the first straightening roller, which is in contact with the wire that has been sent and is rotatable. One straightening roller is positioned on the opposite side of the wire and is rotatable, and the second straightening roller is positioned downstream of the second straightening roller in the wire feeding direction, and the second straightening roller. Is a third straightening roller that is positioned on the opposite side of the wire and is rotatable, and at least one of the first straightening roller, the second straightening roller, and the third straightening roller is connected to the wire. The wire transmission device according to [1], further including a driving unit that moves the position in a direction that traverses the transmission line so that the position can be adjusted.

  [3] And the drive means is provided in a support portion that supports at least one shaft core among the first straightening roller, the second straightening roller, and the third straightening roller, and a screw portion is provided on the end side. A first adjusting portion having a second adjusting portion, a second correcting roller, a second correcting roller, a second adjusting roller abutting on a part of a housing housing the third correcting roller, and a second adjusting portion being screwed with the screw portion of the first adjusting portion; It is a wire correction apparatus as described in said [2] characterized by including an adjustment part.

  [4] And the drive means is provided in a support part that supports at least one shaft core of the first straightening roller, the second straightening roller, and the third straightening roller. The wire straightening device according to [2], comprising: a first adjusting unit that moves in a transverse direction; and a drive source that is at least one of an electric type and a fluid type that moves the first adjusting unit. It is.

  [5] The first correction roller, the second correction roller, and the third correction roller are made of a material harder than the wire and have a cylindrical shape. ] Is a wire transmission device according to any one of the above.

  According to the present invention, in the wire feeder method, in the case of using a wire transport device that is not located immediately above the liquid level of the molten metal containing metal such as pig iron that has been heated to a high temperature, the liquid level of the molten metal On the other hand, the wire can be thrown almost vertically.

It is the schematic of the wire transmission apparatus of this invention. It is a perspective view in the wire straightening device contained in the wire sending device of the present invention. It is a center sectional view (AA line sectional view) in the state where the wire is sent in the wire straightening device contained in the wire feeder of the present invention. It is a figure showing the experimental result which shows the arrival point of the wire when not correct | amending with the wire straightening apparatus in the wire sending apparatus of this invention. It is a figure showing the experimental result which shows the arrival point of the wire when it corrects with the wire straightening apparatus in the wire feeder of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments relating to a wire straightening device and a wire sending device according to the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is intended to limit the invention particularly in the following description. Unless specifically stated, the present invention is not limited to this form. Further, the vertical direction in the description is the vertical direction of the paper surface in FIG. 1, and the horizontal direction is the horizontal direction of the paper surface in FIG.

  The wire W used in the present invention is used for adjusting the components of various metals that are melted, such as molten cast iron, and is a long and linear wire that is added for various quality improvements such as improvement of mechanical properties of these metals. It is a molten metal modifier. The wire W is made of various materials in accordance with the purpose of modifying the molten metal.

  For example, as a component of the wire W, for steel, a material containing calcium and silicon for deoxidation and a material containing calcium and aluminum for desulfurization can be used. And in order to stabilize a molten steel component, the material containing carbon can also be used in order to perform the fine adjustment of the material containing a sulfur and a molten ore component. Further, for cast iron, a material containing magnesium, silicon, iron or the like can be used for desulfurization or spheroidization. Note that the wire W is preferably used by covering these materials with a metal such as a thin steel plate. The wire W can also be used 1 type or in combination of 2 or more types according to the objective.

  As shown in FIG. 1, in one embodiment, the wire W is sent to the molten metal 4 above the ladle 4 filled with a molten metal 5 containing a metal such as pig iron that has been heated to a high temperature and becomes liquid. The wire conveyance device 2 and the wire correction device 1 that corrects wrinkles of the wire W are positioned.

  The wire straightening device 1 includes a plurality of straightening rollers 11 that rotate around the shaft core 12 or rotate integrally with the shaft core 12 inside the box-shaped housing 15 that is hollow inside. Yes. As shown in FIGS. 2 and 3, in this embodiment, as the correction roller 1, the first correction roller 11a that rotates about the first correction roller axis 12a and the second correction roller axis 12b rotate. The second correction roller 11b, the third correction roller 11c rotating around the third correction roller axis 12c, the fourth correction roller 11d rotating around the fourth correction roller axis 12d, and the fifth correction roller It is comprised from the 5th correction roller 11e rotated around the shaft core 12e. And the 2nd correction roller 11b is located in the downstream in the sending direction of the wire W from the 1st correction roller 11a, and is located in the other side on both sides of the wire W with the 1st correction roller 11a. And the 3rd correction roller 11c is located in the downstream in the sending direction of the wire W from the 1st correction roller 11a and the 2nd correction roller 11b, and the other side which pinched | interposed the wire W with the 2nd correction roller 11b, ie, It is located on the same side as the first correction roller 11a with respect to the wire W. And the 4th correction roller 11d is located in the upstream in the wire sending direction from the 1st correction roller 11a, and is located in the other side which pinched | interposed the wire W with the 1st correction roller 11a. And the 5th correction roller 11e is located in the downstream in the wire feeding direction from the 1st correction roller 11a and the 2nd correction roller 11b, and the same height in the vertical direction as the 3rd correction roller 11c so that the wire W may be clamped. Is located. The correction rollers 11a to 11e rotate with respect to the shaft cores 12a to 12e through bearings provided around the shaft cores 12a to 12e, and the shaft cores 12a to 12e themselves do not rotate. It is like that.

  Furthermore, the second correction roller 11b and the fourth correction roller 11d are provided with a drive unit 14 that moves the second correction roller 11b and the fourth correction roller 11d so that their positions can be adjusted in a direction crossing the transmission path of the wire W. In the present embodiment, as the driving means 14, a plate that supports the second straightening roller axis 12b that is the rotation axis of the second straightening roller 11b and the fourth straightening roller axis 12d that is the rotation axis of the fourth straightening roller 11d, respectively. A rod-shaped first adjustment portion 141 fixed to the support portion 13 and having a screw portion 141a on the end side opposite to the second correction roller shaft core 12b and the fourth correction roller shaft core 12d; The plate-shaped projecting portion 151 provided so as to protrude outward from the housing 15 that is a part of the housing 15 and a donut-shaped pedestal portion 16 that is a washer are in contact with each other, and the screw portion of the first adjustment portion 141 141 includes a second adjusting portion 142 that is a nut screwed into 141a. In addition, as shown in FIG. 3, a direction in which the long holes 152 through which the second correction roller shaft core 12 b and the fourth correction roller shaft core 12 d are inserted crosses the wire W transmission path, that is, the horizontal direction, is provided in the housing 15. It is drilled so as to be long.

  Thereby, when moving the 2nd correction roller 11b and the 4th correction roller 11d so that it may approach the protrusion part 151 side protruded outside the housing 15 which is a part of the housing 15, it is a 2nd which is a nut. The adjusting unit 142 is rotated manually by a tool or automatically using a motor (not shown) such as a motor as a power source in a direction in which the second adjusting unit 142 is tightened with respect to the first adjusting unit 141. When operated in this way, the second adjusting portion 142 and the projecting portion 151 come into contact with each other, so that the first adjusting portion 141 screwed with the inner screw of the second adjusting portion 142 is moved toward the projecting portion 151 side. Since the second correction roller shaft core 12b and the fourth correction roller shaft core 12d that move together with the first adjustment unit 141 are moved, the second correction roller 11b and the fourth correction roller 11d are moved to the second correction roller. The shaft core 12b and the fourth straightening roller shaft core 12d can be moved until they contact the edges of the long holes 152 and 152, respectively. Moreover, since the screw part 141a of the 1st adjustment part 141 and the 2nd adjustment part 142 are screwing together, it can also adjust so that the 2nd correction roller 11b and the 4th correction roller 11d may respectively become a desired position. . Conversely, when the second correction roller 11b and the fourth correction roller 11d are moved away from the protruding portion 151 side, the second adjustment portion 142 is rotated by rotating the second adjustment portion 142 in the reverse direction. Since the relative distance between the second straightening roller shaft core 12b and the fourth straightening roller shaft core 12d can be increased, the second straightening roller shaft core 12b and the fourth straightening roller that move together with the first adjusting portion 141 can be obtained. The roller core 12d, and the second straightening roller 11b and the fourth straightening roller 11d are moved until the second straightening roller shaft 12b and the fourth straightening roller shaft 12d contact the edges of the long holes 152 and 152, respectively. be able to.

  Thus, even if it is every different wire coil or one wire coil by moving the 2nd correction roller 11b and the 4th correction roller 11d in the direction which crosses the sending path R of the wire W in the wire correction apparatus 1 Since the strength with which each of the wire W and the second straightening roller 11b and the fourth straightening roller 11d abut can be adjusted according to the location where the bending state of the wire W is different, such as the outside and the inside, the wire straightening can be performed. The wire W passing through the device 1 can be corrected so as to be as straight as possible in the vertical direction.

  Moreover, in this embodiment, although the drive means 14 is provided in the 2nd correction roller 11b and the 4th correction roller 11d, in other embodiment, the drive means 14 is the 1st correction roller 11a, the 2nd correction roller. It may be provided on all of the rollers 11b and the third correction roller 11c, or may be provided only on the first correction roller 11a. Furthermore, the fourth straightening roller 11d and the fifth straightening roller 11e are not necessarily provided.

  Furthermore, in this embodiment, the drive means 14 is comprised from the 1st adjustment part 141, the 2nd adjustment part 142 screwed together with the screw part 141a which is a part of the 1st adjustment part 141, etc. In this embodiment, the driving means 14 is rotated by a drive source composed of a plurality of teeth in the longitudinal direction as the first adjusting portion 141 and a drive source consisting of an electric motor, and meshes with the teeth provided on the rod-like member. The first adjustment unit 141 may be a rod-like member that can be expanded and contracted by a fluid such as a hydraulic cylinder or a pneumatic cylinder, an electric drive source, and a hydraulic pump that operates with the drive source. Or a mechanism in which the rod-like member expands and contracts by a fluid supplied from a fluid pump such as an air pump.

  The material of the first straightening roller 11a to the fifth straightening roller 11e is preferably harder than the wire W so as not to be deformed by the wire W, and is preferably a metal such as stainless steel or aluminum alloy.

  Further, the first straightening roller 11a to the fifth straightening roller 11e can have a cylindrical shape, a spindle shape in which the center is swollen, or the like. A cylindrical shape is preferable because it can be easily adjusted at the center or end of ˜11e.

  As shown in FIG. 1, the wire conveyance apparatus 2 which sends the wire W is provided in the upstream in the wire sending direction of the wire correction apparatus 1 so that it can send in the horizontal direction. Inside the wire conveyance device 2, the cylindrical conveyance roller 21 driven via the belt by the electric motor M can rotate around the conveyance roller shaft 22, so that a pair of opposed conveyance rollers 21 and 21 are provided. The wire W can be clamped and the wire W can be sent in a predetermined sending direction.

  The material of the transport roller 21 is preferably harder than the wire W so as not to be deformed by the wire W, like the first straightening roller 11a to the fifth straightening roller 11e, and may be a metal such as stainless steel or aluminum alloy. preferable. Moreover, it is preferable that the shape of the conveyance roller 21 is a cylindrical shape so that it can be pinched reliably also by the bending of the wire W sent.

  In the present embodiment, the wire conveyance device 2 is provided so as to be able to send a wire in the horizontal direction, and the place where the wire transmission device composed of the wire conveyance device 2, the wire straightening device 1 and the like is installed is in the vertical direction. Even when the height is low, it is preferable because a set of wire transmission devices can be easily arranged. Moreover, when the place where the wire feeder is installed is sufficiently high in the vertical direction, the wire feeder 2 can be installed without installing the wire conveyor 2 horizontally so that the wire W can be sent horizontally. Depending on the location, the wire conveying device 2 can be installed so that it can be sent in the up-down direction, or can be installed so that it can be sent in the oblique direction.

  The curved guide pipe 3 is located downstream of the wire conveying device 2 in the wire W transmission direction and upstream of the wire straightening device 1 in the wire W transmission direction. It is a hollow member to be inserted. Since the wire W sent out from the wire conveying device 2 can bend the wire W direction by passing through the inside of the curved guide pipe 3, the wire conveying device 2 should not be positioned directly above the molten metal 4. As a result, the wire transport device 2 is not exposed to the heat generated by the molten metal and the smoke coming into contact with the wire, and the wire transport device 2 is prevented from clogging and deterioration of the parts, thereby extending the life of the wire transport device 2. Can do. And while installing space can be used effectively, when an operator accidentally touches the wire W, the wire W is greatly bent and cannot be sent to the wire straightening device 1 or the operator is involved. Can be prevented from being injured.

  Moreover, the straight guide pipe 4 is located downstream from the wire straightening device 1 in the wire sending direction, and is a hollow and straight member that inserts the wire W therein. Since the wire W is straightened by the wire straightening device 1, the straight guide pipe 4 is not necessarily provided. However, if the worker touches the wire W by mistake, the wire W is bent or the worker is injured. Can be prevented.

  And the effect regarding the presence or absence of the correction | amendment by the drive means 14 was confirmed using the 2nd correction roller 11b of the wire correction apparatus 1, and the 4th correction roller 11d. That is, in FIG. 1, when the ladle 5 containing the molten metal 6 is removed and the distance from the outlet of the straight guide pipe 4 to the floor is 1390 mm, the center lines of the wire straightening device 1 and the straight guide pipe 4 are extended to the floor. The deviation from the origin O of the wire W sent was measured by taking the X axis and the Y axis with reference to the wire straightening device 1 as shown in FIG.

  First, when the wire W is sent by adjusting the second straightening roller 11b and the fourth straightening roller 11d of the wire straightening device 1 so as not to contact the wire W, the wire W is appropriately cut and the test is performed five times. As a result, as indicated by a square symbol in FIG. 4, the arc reached a floor in the range of 400 to 500 mm from the origin O and reached the floor. This is considered to be due to the fact that the wire W has greatly deviated from the origin O due to the bending wrinkle of the wire W.

  Then, when the wire W is sent by moving the second straightening roller 11b and the fourth straightening roller 11d of the wire straightening device 1 by a predetermined length so as to come into contact with the wire W, respectively, the wire W When W was cut and tested seven times, it reached the floor so as to be within a range of 100 mm from the origin O as indicated by the square symbols in FIG. This is considered to be due to the fact that the bending wrinkle of the wire W could be corrected by pressing with the second correction roller 11b and the fourth correction roller 11d.

  In this way, by operating the driving means 14 to move the correction roller 11 in the direction crossing the wire R route of the wire W and bringing it into contact with the wire W that has been sent, the wrinkle of the wire W has. It was found that can be corrected. In addition, when another wire different from the wire W used this time is used, the same correction can be made by operating the driving device 14 according to the bending of the other wire and moving the correction roller 11 to an appropriate position. It becomes.

DESCRIPTION OF SYMBOLS 1 ... Wire straightening device 11 ... Straightening roller 11a ... 1st straightening roller 11b ... 2nd straightening roller 11c ... 3rd straightening roller 11d ... 4th straightening roller 11e ... 4th Five straightening rollers 12 ... shaft core 12a ... first straightening roller shaft core 12b ... second straightening roller shaft core 12c ... third straightening roller shaft core 12d ... fourth straightening roller shaft core 12e ... Fifth straightening roller axis 13 ... Supporting part 14 ... Drive means 141 ... First adjusting part 141a ... Screw part 142 ... Second adjusting part 15 ... Castle 151. ··· Projection portion 152 ··· Long hole 16 ··· Pedestal portion 2 ··· Wire transfer device 21 ······································ ... Ladle 6 ... Molten metal W ... Wire R ··· Ochsen route M ··· electric motor

Claims (5)

A wire conveying device for nipping and conveying the wire;
A curved guide pipe that is positioned downstream in the wire feeding direction of the wire from the wire conveying device, and passes through the wire;
A wire sending device, comprising a wire straightening device that is located downstream of the guide pipe in the wire sending direction and that corrects wrinkles of the wire with a plurality of built-in straightening rollers. The wire straightening device is
A first straightening roller that is in contact with the sent wire and is rotatable;
A second correction roller, which is located downstream from the first correction roller in the wire feeding direction, and is rotatable on the opposite side of the wire from the first correction roller;
A third correction roller, which is located downstream from the second correction roller in the wire feeding direction, and is rotatable on the opposite side of the wire from the second correction roller;
The driving means for moving at least one of the first straightening roller, the second straightening roller, and the third straightening roller so that the position of the first straightening roller, the second straightening roller, and the third straightening roller can be adjusted in a direction crossing a wire transmission path. The wire transmission apparatus according to 1. The drive means
A first adjusting portion provided on a support portion that supports at least one of the first straightening roller, the second straightening roller, and the third straightening roller, and having a screw portion on an end side;
A first adjusting roller, a second adjusting roller, and a second adjusting portion that comes into contact with a part of the housing that houses the third correcting roller and is screwed with the screw portion of the first adjusting portion. The wire transmission device according to claim 2, wherein the wire transmission device is a wire transmission device.   The driving means is provided in a support portion that supports at least one of the first correction roller, the second correction roller, and the third correction roller, and moves in a direction crossing the wire transmission path. The wire feeder according to claim 2, further comprising a first adjusting unit and a drive source that is at least one of an electric type and a fluid type that moves the first adjusting unit. The first correction roller, the second correction roller, and the third correction roller are made of a material harder than the wire and have a cylindrical shape. Wire transmission device.

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