KR20160138711A - Pinch roller apparatus - Google Patents

Pinch roller apparatus Download PDF

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Publication number
KR20160138711A
KR20160138711A KR1020150072906A KR20150072906A KR20160138711A KR 20160138711 A KR20160138711 A KR 20160138711A KR 1020150072906 A KR1020150072906 A KR 1020150072906A KR 20150072906 A KR20150072906 A KR 20150072906A KR 20160138711 A KR20160138711 A KR 20160138711A
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KR
South Korea
Prior art keywords
pinch roller
stand body
unit
inlet groove
stand
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Application number
KR1020150072906A
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Korean (ko)
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KR101685814B1 (en
Inventor
전병준
Original Assignee
현대제철 주식회사
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Priority to KR1020150072906A priority Critical patent/KR101685814B1/en
Publication of KR20160138711A publication Critical patent/KR20160138711A/en
Application granted granted Critical
Publication of KR101685814B1 publication Critical patent/KR101685814B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

Disclosed is a pinch roller apparatus. According to the present invention, the pinch roller apparatus includes: a base; a stand body installed movably on the base; a first pinch roller part which is installed on the stand body, and includes a first pinch having multiple first insertion grooves formed to be arranged on a pass line of a rolling material; a second pinch roller part which is installed to be driven together with the first pinch roller part on the stand body, and includes a second pinch roller having multiple second insertion grooves formed to be arranged on a pass line opposite from the first insertion groove; and a roller elevation part which is installed on the stand body, and elevates the second pinch roller part to adjust the interval between the first insertion groove and the second insertion groove. The pinch roller apparatus can extend a replacement cycle of the pinch roller.

Description

[0002] PINCH ROLLER APPARATUS [0003]

The present invention relates to a pinch roller device, and more particularly, to a pinch roller device capable of extending a replacement period of a pinch roller.

Generally, in the continuous casting process, rolled materials such as slabs, billets, and billets are produced. The rolled material is heated in a furnace and rolled in a rolling mill. The material rolled in the rolling mill is conveyed by cooling by the pinch roller. In the cooling zone, the rolled material is cooled to a suitable temperature. The rolled material cooled in the cooling zone is transported to a post-treatment process or transported to storage.

The background art of the present invention is disclosed in Korean Patent Publication No. 2010-0071512 (published on June 29, 2010, entitled Magnesium Alloy Billet Continuous Casting Apparatus).

According to an embodiment of the present invention, there is provided a pinch roller device capable of extending a replacement cycle of a pinch roller.

A pinch roller device according to the present invention comprises: a base; A stand body movably installed on the base; A first pinch roller unit installed on the stand body and including a first pinch roller having a plurality of first inlet grooves formed on the pass line of the rolled material; And a second pinch roller provided on the stand body so as to be driven together with the first pinch roller portion and having a plurality of second inlet grooves formed on the pass line so as to face the first inlet groove, A pinch roller portion; And a roller elevating part installed on the stand body for elevating and lowering the second pinch roller part to adjust an interval between the first drawing-in groove and the second drawing-in groove.

The lifting and lowering portion includes a lifting piston supported by the stand body and connected to the second pinch roller portion to lift the second pinch roller portion; And a buffer piston which is supported by the stand body and delays the lowering speed of the second pinch roller portion to prevent the second pinch roller from colliding with the first pinch roller when the second pinch roller portion is lowered .

The lifting piston and the buffer piston may be disposed perpendicular to the second pinch roller portion.

Wherein the stand body is disposed on the base so as to move the stand body, and the first inlet groove and the second inlet groove located on the pass line are changed to the other first inlet groove and the second inlet groove, And a stand transporting unit for moving the stand transporting unit.

The stand transfer unit includes: a first rotating shaft installed on the base; A first gear portion provided at an end of the first rotation shaft; And a ball screw rotatably coupled to the base, wherein a second gear portion is formed to be engaged with the first gear portion, and the first gear portion and the second gear portion are engaged and rotated to move the stand body can do.

And a level changing unit installed on the stand body for changing the height of the pass line by moving the first pinch roller unit up and down according to the thickness of the rolled material.

And a lubricant supply unit connected to the first pinch roller unit and the bearing unit of the second pinch roller unit to inject lubricant into the bearing unit.

The lubricating oil supply unit may include: a spray nozzle installed in the bearing portion; A spray nozzle connected to the spray nozzle; And a lubricant pump connected to the injection hose to supply lubricant to the injection hose.

According to the present invention, since the second pinch roller portion is lifted and lowered as the roller elevating portion is driven, when the leading end portion of the rolled material is pinched between the first pinch roller and the second pinch roller, the first pinch roller and the second pinch roller collide with each other Can be prevented. Therefore, the service life and replacement cycle of the first pinch roller and the second pinch roller can be extended.

Further, according to the present invention, when the roller elevating portion lowers the second pinch roller portion, the buffer piston delays the fall of the second pinch roller portion, so that the second pinch roller can be prevented from colliding with the first pinch roller or the rolling material have.

Further, according to the present invention, as the stand transfer section moves the stand body, the other first inlet grooves and the second inlet grooves are located on the pass line, and therefore, until the first inlet groove and the second inlet groove are both worn The first pinch roller and the second pinch roller may not be replaced. Therefore, the replacement time of the first pinch roller and the second pinch roller can be prolonged.

According to the present invention, since the lubricating oil supply portion injects the lubricating oil into the bearing portion in the form of a droplet, the lubricating oil can be prevented from flowing down in the bearing portion. Therefore, the lower structures of the first pinch roller portion and the second pinch roller portion can be prevented from being contaminated by the lubricating oil.

1 is a block diagram showing a state in which a pinch roller device according to an embodiment of the present invention is installed in a rolling line.
2 is a front view showing a pinch roller device according to an embodiment of the present invention.
3 is a front view showing a state in which the second pinch roller portion is elevated before the leading end of the rolling material in the pinch roller device according to the embodiment of the present invention is pulled into the first pinch roller and the second pinch roller.
FIG. 4 is a front view showing a state in which a leading end of a rolling material is drawn into a first pinch roller and a second pinch roller and then the second pinch roller portion is lowered to an original position in a pinch roller device according to an embodiment of the present invention.
5 is a view showing a state in which the stand receiving portion of the pinch roller device according to the embodiment of the present invention is moved to replace the positions of the first inlet groove and the second inlet groove of the first pinch roller and the second pinch roller, It is a front view.

Hereinafter, an embodiment of a pinch roller device according to the present invention will be described with reference to the accompanying drawings. In the course of describing the pinch roller device, the thicknesses of the lines and the sizes of the constituent elements 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 block diagram showing a state in which a pinch roller device according to an embodiment of the present invention is installed in a rolling line, and FIG. 2 is a front view showing a pinch roller device according to an embodiment of the present invention.

1 and 2, a pinch roller device 100 according to an embodiment of the present invention includes a base 110, a stand body 120, a first pinch roller portion 130, a second pinch roller portion 140 and a roller elevating portion 150. [

The rolled material heated in the heating furnace 10 is fed to the pinch roller device 100 after passing through the rolling mill 30. The pinch roller device 100 transfers the rolled material discharged from the rolling mill 30 to the cooling bed 50. Since the cooling stand 50 is formed to have a length of approximately 110 m, the discharge side of the rolling mill 30 and the discharge side of the cooling stand 50 are formed to have a length of approximately 150 m. The pinch roller device 100 is installed between the rolling mill 30 and the cooling stand 50 so that the rolling material discharged from the rolling mill 30 can be conveyed to the cooling stand 50 at a constant line speed. The pinch roller device 100 serves to correct the line speed of the rolled material at a constant speed.

The base 110 of the pinch roller device 100 is located on the inlet side bottom surface of the cooling stand 50. The base 110 has a rail 111 formed thereon. The base 110 may be formed in various shapes as long as the pinch roller device 100 is stably supported.

The stand body 120 is movably installed on the base 110. The stand body 120 includes a moving panel part 121 movably installed on the rail part 111 and a stand part 123 formed on the moving panel part 121 in a standing manner.

The first pinch roller unit 130 is installed on the stand body 120 and includes a first pinch roller 131 having a plurality of first inlet grooves 132 disposed on the pass line P . At this time, one of the plurality of first inlet grooves 132 is disposed on the pass line P of rolling material, and the other first inlet groove 132 is disposed on the pass line P Is disposed at an off position.

On both sides of the first pinch roller portion 130, a bearing portion 135 is provided to rotatably support the first pinch roller portion 130. A first pinch roller 131 is connected to one side (left side in FIG. 1) of the first pinch roller unit 130 and a speed reducer coupling unit 137 is connected to the other side (right side in FIG. 1) . A speed reducer (not shown) is connected to the speed reducer connecting portion 137, and the speed reducer is connected to a driving portion (not shown).

The first pinch roller 131 is detachably attached to the first pinch roller portion 130. Therefore, when the first pinch roller 131 has reached the end of its service life or is damaged, the first pinch roller 131 can be replaced by the first pinch roller unit 130.

The second pinch roller unit 140 is disposed in parallel with the first pinch roller unit 130. The second pinch roller unit 140 is installed on the stand body 120 to be driven together with the first pinch roller unit 130. The second pinch roller portion 140 includes a second pinch roller 141 which is opposed to the first lead-in groove 132 and in which a plurality of second lead-in grooves 142 are formed to be disposed on the pass line P . One of the second inlet grooves 142 is disposed on the pass line P and the other second inlet groove 142 is disposed on the pass line P . At this time, the second lead-in groove 142 surrounds the upper portion of the pass line P, and the first lead-in groove 132 is formed to surround the lower portion of the pass line P.

On both sides of the second pinch roller portion 140, a bearing portion 145 is provided to rotatably support the second pinch roller portion 140. A second pinch roller 141 is connected to one side (left side in FIG. 1) of the second pinch roller unit 140 and a speed reducer coupling unit 147 is connected to the other side (right side in FIG. 1) . A speed reducer (not shown) is connected to the speed reducer connection portion 147, and the speed reducer is connected to a driving portion (not shown).

The second pinch roller 141 is detachably attached to the second pinch roller portion 140. Therefore, the second pinch roller 141 can be replaced by the second pinch roller unit 140 when the second pinch roller 141 has reached the end of its life or is damaged.

The roller elevating unit 150 is installed on the stand body 120 and lifts the second pinch roller unit 140 to adjust the gap between the first inlet groove 132 and the second inlet groove 142. The roller elevating portion 150 adjusts the distance between the first inlet groove 132 and the second inlet groove 142 so that the leading end portion of the rolled material between the first inlet groove 132 and the first inlet groove 132 The gap between the first inlet groove 132 and the second inlet groove 142 can be increased. Therefore, it is possible to prevent an impact from being applied to the first inlet groove 132 and the second inlet groove 142 at the beginning when the tip of the rolled material is drawn between the first inlet groove 132 and the second inlet groove 142 . Further, since the first pinch roller 131 and the second pinch roller 141 can be prevented from being damaged by the leading end of the rolled material at the initial stage of the pulling, The replacement cycle and the life can be prolonged. In addition, since the rolling process is not interrupted to replace the first pinch roller 131 and the second pinch roller 141, the productivity of the product can be improved.

The roller elevating portion 150 includes a lifting piston 151 and a buffer piston 155.

The lifting piston 151 is supported on the stand body 120 and is connected to the second pinch roller portion 140 so as to move the second pinch roller portion 140 up and down. The lifting piston 151 includes a lifting cylinder 152 and a lifting rod 153. As the fluid is supplied to the lifting cylinder 152, the lifting rod 153 is pulled out of the lifting cylinder 152 to raise the second pinch roller unit 140. As the fluid is discharged from the lifting cylinder 152, the lifting rod 153 is pulled into the lifting cylinder 152 to lower the second pinch roller unit 140.

The buffer piston 155 is supported on the stand body 120 and is configured to prevent the second pinch roller 141 from colliding with the first pinch roller 131 when the second pinch roller portion 140 is lowered, Thereby delaying the descending speed of the pinch roller unit 140. [ The buffer piston 155 includes a buffer cylinder 156 and a buffer rod 157. As the fluid is supplied to the buffer cylinder 156, the buffer rod 157 is pulled out of the buffer cylinder 156 to raise the second pinch roller portion 140. As the fluid is discharged from the buffer cylinder 156, the buffer rod 157 is drawn into the buffer cylinder 156 to delay the fall of the second pinch roller unit 140.

At this time, since the buffer piston 155 delays the lowering of the second pinch roller unit 140, the speed at which the lifting piston 151 descends the second pinch roller unit 140 can be reduced. Therefore, it is possible to prevent the second pinch roller portion 140 from colliding with the first pinch roller 131 when the second pinch roller portion 140 descends. In addition, since the second pinch roller 141 and the first pinch roller 131 are prevented from colliding with each other, the service life and replacement period of the second pinch roller 141 and the first pinch roller 131 can be extended.

The lifting piston 151 and the buffer piston 155 are disposed perpendicular to the second pinch roller portion 140. For example, the lifting piston 151 is vertically disposed below the second pinch roller portion 140, and the buffer piston 155 is disposed vertically above the second pinch roller portion 140. Since the lifting piston 151 and the buffer piston 155 are disposed perpendicular to the second pinch roller portion 140, when the second pinch roller portion 140 is moved up and down, The first inlet grooves 132 of the first pinch roller 131 and the first pinch roller 131 can be prevented from being dislocated. Therefore, since the second inlet groove 142 and the first inlet groove 132 are always located opposite to each other, it is possible to prevent the rolling material from being damaged when being transported along the path line P. The first pinch roller 132 and the second pinch groove 142 are prevented from being broken by the rolling material so that the life of the first pinch roller 131 and the second pinch roller 141, Can be extended.

The pinch roller device 100 further includes a stand transferring part 160 installed on the base 110 to move the stand body 120. The stand transfer unit 160 may be configured to change the first and second inlet grooves 132 and 142 located on the pass line P to be different from the first inlet grooves 132 and the second inlet grooves 142 The stand body 120 is moved. The first pinch roller unit 130 and the second pin stand body 120 are moved together with the stand body 120 when the stand body 120 is moved from the base 110 by the stand transfer unit 160. At this time, the stand transfer unit 160 moves the stand body 120 by a distance such that the first and second lead-in grooves 132 and 142 are located on the pass line P, respectively.

The first receiving groove 132 and the second receiving groove 142 are located on the pass line P as the stand transporting unit 160 moves the stand body 120, The first and second inlet grooves 132 and 142 may be positioned on the pass line P by driving the stand feeder 160 when the second inlet groove 142 and the second inlet groove 142 are worn . The first pinch roller 131 and the second pinch roller 141 do not need to be replaced even if the first inlet groove 132 and the second inlet groove 142 located on the pass line P are worn. Therefore, the replacement time of the first pinch roller 131 and the second pinch roller 141 can be extended. In addition, it is possible to reduce the time for stopping the rolling line to replace the first pinch roller 131 and the second pinch roller 141.

The stand transfer unit 160 includes a first rotation shaft 161, a first gear unit 163, and a ball screw 165.

The first rotation shaft 161 is installed on the base 110. The first rotating shaft 161 is disposed substantially perpendicular to the conveying direction of the stand body 120. A rotating wheel (not shown) is formed on the first rotating shaft 161 to rotate the first rotating shaft 161 easily.

The first gear portion 163 is provided at the end of the first rotation shaft 161. The first gear portion 163 is rotated by the first rotation shaft 161. The first gear portion 163 is rotated about the same axis as the first rotation shaft 161.

The ball screw 165 is rotatably coupled to the base 110. The ball screw 165 is provided with the second gear portion 164 to be engaged with the first gear portion 163 and the first gear portion 163 and the second gear portion 164 are engaged with each other, 120 are moved. The ball screw 165 is disposed parallel to the conveyance direction of the stand body 120.

Since the stand transfer unit 160 is transferred by driving the first gear unit 163, the second gear unit 164 and the ball screw 165, the transfer pitch of the stand body 120 can be accurately controlled. Since the feeding pitch of the stand body 120 can be accurately adjusted so that the positions of the first inlet groove 132 and the second inlet groove 142 are changed when the positions of the first inlet groove 132 and the second inlet groove 142 are changed, Can be accurately positioned on the pass line (P).

The pinch roller device 100 is installed in the stand body 120 and has a level changing portion 170 for changing the height of the pass line P by raising and lowering the first pinch roller portion 130 according to the thickness of the rolled material . The level changing portion 170 includes a rotating rod 171 provided on the stand body 120, a pinion gear portion 173 coupled to an end portion of the rotating rod 171, and a pinion gear portion 173 coupled to the pinion gear portion 173, And a rack gear portion 175 fixed to the pinch roller portion 130. The rotating rod 171 is provided with a level changing wheel (not shown) for smoothly rotating the rotating rod 171. When the level changing wheel rotates the rotary rod 171, the pinion gear portion 173 is moved along the rack gear portion 175 to move the first pinch roller portion 130.

As the first pinch roller portion 130 is moved, the height of the first inlet groove 132 of the first pinch roller portion 130 surrounding the lower portion of the pass line P is changed. Therefore, when the thickness of the rolled material is too thick or thin, the height of the first inlet groove 132 can be changed by driving the level changing portion 170, so that the front end of the rolled material is separated from the first inlet groove 132, It is possible to prevent the first pinch roller 131 and the second pinch roller 141 from being damaged by colliding with the two lead-in grooves 142. Further, it is possible to prolong the replacement period and the service life of the first pinch roller 131 and the second pinch roller 141.

The pinch roller device 100 is connected to the bearing portions 135 and 145 of the first pinch roller portion 130 and the second pinch roller portion 140 to supply lubricant to the bearing portions 135 and 145 in the form of droplets. ). Since the lubricating oil supply unit 180 injects lubricating oil into the bearing units 135 and 145 in the form of droplets, it is possible to prevent the lubricating oil from flowing down from the bearing units 135 and 145. Therefore, it is possible to prevent the lower structures of the first pinch roller portion 130 and the second pinch roller portion 140 from being contaminated by the lubricating oil.

The lubricant supply portion 180 includes a spray nozzle 181 provided at the bearing portions 135 and 145, a spray nozzle 183 connected to the spray nozzle 181, a spray nozzle 183 connected to the spray nozzle 183, And a lubricating oil pump 185 for supplying lubricating oil. The lubricating oil pump 185 periodically supplies the lubricating oil to the injection nozzle 181, so that the lubricating oil can be automatically supplied to the bearing portions 135 and 145. Further, since the injection nozzle 181 injects the lubricating oil into the bearing portions 135 and 145 in a droplet form, it is possible to prevent the lubricating oil from flowing down from the bearing portions 135 and 145.

Hereinafter, the operation of the pinch roller device according to the embodiment of the present invention will be described.

3 is a front view showing a state in which the second pinch roller portion is elevated before the leading end of the rolling material in the pinch roller device according to the embodiment of the present invention is pulled into the first pinch roller and the second pinch roller.

Referring to Fig. 3, the rolled material rolled in the rolling mill 30 is conveyed to the pinch roller device 100 side. The second pinch roller portion 140 is lifted as the roller lifting portion 150 is driven. That is, the fluid is supplied to the lifting piston 151, the fluid is discharged from the buffer piston 155, and the second pinch roller unit 140 is lifted.

At this time, since the first pinch roller 131 and the second pinch roller 141 are relatively distanced from each other and the gap G1 between the first inlet groove 132 and the second inlet groove 142 is wider than the thickness of the rolled material All. Therefore, even if the leading end portion of the rolled material is drawn between the first lead-in groove 132 and the second lead-in groove 142, the leading end portion of the rolled material collides with the first lead-in groove 132 and the second lead- .

Since the first pinch roller 131 and the second pinch roller 141 can be prevented from colliding with the first rolling grooves 132 and the second rolling grooves 142, It is possible to prevent damage from being caused. As a result, the service life and replacement cycle of the first pinch roller 131 and the second pinch roller 141 can be extended.

FIG. 4 is a front view showing a state in which a leading end of a rolling material is drawn into a first pinch roller and a second pinch roller and then the second pinch roller portion is lowered to an original position in a pinch roller device according to an embodiment of the present invention.

4, as the leading end of the rolled material passes through the first pinch roller 131 and the second pinch roller 141 and then the roller lifting unit 150 is driven, the second pinch roller unit 140 moves to the home position Lt; / RTI > That is, as the fluid is discharged from the lifting piston 151 and the fluid is supplied to the buffer piston 155, the second pinch roller unit 140 is lowered. At this time, the first pinch roller 131 and the second pinch roller 141 maintain a gap G2 at which the rolling material can pass.

At this time, since the buffer piston 155 delays the lowering of the second pinch roller unit 140, the speed at which the lifting piston 151 descends the second pinch roller unit 140 can be reduced. Therefore, when the second pinch roller portion 140 is lowered, the second pinch roller 141 can be prevented from colliding with the first pinch roller 131 or the rolled material.

Also, since the second pinch roller 141 is prevented from colliding with the first pinch roller 131 or the rolled material, the service life and replacement cycle of the second pinch roller 141 and the first pinch roller 131 are extended . Further, it is possible to prevent the rolled material from being deformed by the impact.

When the second pinch roller portion 140 is lowered to a predetermined height, the gap between the first inlet groove 132 and the second inlet groove 142 is narrowed to about the thickness of the rolled material. Therefore, as the first inlet groove 132 and the second inlet groove 142 are rubbed against the rolling material, the rolling material can be transferred to the cooling table 50 side.

5 is a view showing a state in which the stand receiving portion of the pinch roller device according to the embodiment of the present invention is moved to replace the positions of the first inlet groove and the second inlet groove of the first pinch roller and the second pinch roller, It is a front view.

5, when the first inlet groove 132 and the second inlet groove 142 are worn to a certain extent by the first pinch roller 131 and the second pinch roller 141, And the stand body 120 is moved. The first pinch roller unit 130 and the second pin stand body 120 are moved together with the stand body 120 when the stand body 120 is moved from the base 110 by the stand transfer unit 160. [ At this time, the stand transfer unit 160 moves the stand body 120 by a distance L1 at which the first and second inlet grooves 132 and 142 are positioned on the pass line P.

The first pinch roller 131 and the second pinch roller 142 are positioned on the pass line P as the stand transfer unit 160 moves the stand body 120. Therefore, And the second pinch roller 141 need not be replaced. Therefore, the replacement time of the first pinch roller 131 and the second pinch roller 141 can be extended. In addition, it is possible to reduce the time for stopping the rolling line to replace the first pinch roller 131 and the second pinch roller 141.

The lubricant supply unit 180 is driven at regular intervals while the first pinch roller unit 130 and the second pinch roller unit 140 are driven. The lubricant is injected into the bearing portions 135 and 145 of the first pinch roller portion 130 and the second pinch roller portion 140 in a droplet form as the lubricant supply portion 180 is driven. Accordingly, it is possible to prevent the lubricating oil from flowing down from the bearing portions 135 and 145, so that the lower structures of the first pinch roller portion 130 and the second pinch roller portion 140 can be prevented from being contaminated by the lubricating oil.

Since the second pinch roller portion 140 is lifted and lowered as the roller lifting portion 150 is driven as described above, the leading end of the rolled material is drawn between the first pinch roller 131 and the second pinch roller 141 It is possible to prevent the first pinch roller 131 and the second pinch roller 141 from colliding with each other. Therefore, it is possible to prevent the first pinch roller 131 and the second pinch roller 141 from being damaged by the rolling material. In addition, the service life and replacement period of the first pinch roller 131 and the second pinch roller 141 can be extended.

Since the buffer piston 155 delays the lowering of the second pinch roller unit 140 when the roller elevating unit 150 descends the second pinch roller unit 140, It is possible to prevent the pinch rollers 131 or the rolled material from colliding with each other. Also, since the second pinch roller 141 is prevented from colliding with the first pinch roller 131 or the rolled material, the service life and replacement cycle of the second pinch roller 141 and the first pinch roller 131 are extended .

Since the first receiving groove 132 and the second receiving groove 142 are located on the pass line P as the stand transporting unit 160 moves the stand body 120, The first pinch roller 131 and the second pinch roller 141 may not be replaced until both of the first pinch roller 132 and the second pinch groove 142 are worn. Therefore, the replacement time of the first pinch roller 131 and the second pinch roller 141 can be extended. In addition, it is possible to reduce the time for stopping the rolling line to replace the first pinch roller 131 and the second pinch roller 141.

Since the lubricating oil supply unit 180 injects lubricating oil into the bearing units 135 and 145 in the form of droplets, it is possible to prevent the lubricating oil from flowing down from the bearing units 135 and 145. Therefore, it is possible to prevent the lower structures of the first pinch roller portion 130 and the second pinch roller portion 140 from being contaminated by the lubricating oil.

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 true scope of protection of the present invention should be defined by the claims.

10: heating furnace 30: rolling mill
50: Cooling stand 100: Pinch roller device
110: Base 111:
120: stand body 121: movable rail part
123: stand part 130: first pinch roller part
131: first pinch roller 132: first inlet groove
135: bearing part 137: reducer connection part
140: second pinch roller section 141: second pinch roller
142: second inlet groove 145: bearing portion
147: Reducer connection part 150: Roller elevating part
151: lifting piston 152: lifting cylinder
153: lifting rod 155: buffer piston
156: buffer cylinder 157: buffer rod
160: stand transfer unit 161:
163: first gear portion 165: ball screw
164: second gear portion 170: level changing portion
171: rotating rod 173: pinion gear part
175: rack gear part 180: lubricating oil supply part
181: jet nozzle 183: jet hose
185: Lubricating oil pump

Claims (8)

Base;
A stand body movably installed on the base;
A first pinch roller unit installed on the stand body and including a first pinch roller having a plurality of first inlet grooves formed on the pass line of the rolled material;
And a second pinch roller provided on the stand body so as to be driven together with the first pinch roller portion and having a plurality of second inlet grooves formed on the pass line so as to face the first inlet groove, A pinch roller portion; And
And a roller elevating unit installed on the stand body for elevating and lowering the second pinch roller unit to adjust an interval between the first inlet groove and the second inlet groove.
The method according to claim 1,
The roller elevating portion
A lifting piston supported on the stand body and connected to the second pinch roller portion to lift the second pinch roller portion; And
And a buffer piston which is supported by the stand body and delays the lowering speed of the second pinch roller portion to prevent the second pinch roller from colliding with the first pinch roller when the second pinch roller portion is lowered Wherein the pinch roller device comprises:
3. The method of claim 2,
Wherein the lifting piston and the buffer piston are disposed perpendicularly to the second pinch roller portion.
The method according to claim 1,
Wherein the stand body is disposed on the base so as to move the stand body, and the first inlet groove and the second inlet groove located on the pass line are changed to the other first inlet groove and the second inlet groove, And a stand transferring unit for transferring the pinch roller.
5. The method of claim 4,
The stand transfer part
A first rotating shaft installed on the base;
A first gear portion provided at an end of the first rotation shaft; And
And a ball screw rotatably coupled to the base and having a second gear portion to be engaged with the first gear portion and moving the stand body by rotating the first gear portion and the second gear portion in engagement with each other, And a pinch roller.
5. The method of claim 4,
Further comprising a level changing unit installed on the stand body for changing the height of the pass line by moving the first pinch roller unit up and down according to the thickness of the rolled material.
The method according to claim 1,
Further comprising a lubricant supply unit connected to the first pinch roller unit and the bearing unit of the second pinch roller unit to inject lubricant to the bearing unit.
8. The method of claim 7,
The lubricating oil supply unit includes:
An injection nozzle installed in the bearing portion;
A spray nozzle connected to the spray nozzle; And
And a lubricant pump connected to the injection hose to supply lubricant to the injection hose.
KR1020150072906A 2015-05-26 2015-05-26 Pinch roller apparatus KR101685814B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150072906A KR101685814B1 (en) 2015-05-26 2015-05-26 Pinch roller apparatus

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KR20160138711A true KR20160138711A (en) 2016-12-06
KR101685814B1 KR101685814B1 (en) 2016-12-12

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852514A (en) * 1994-08-12 1996-02-27 Ishikawajima Harima Heavy Ind Co Ltd Pinch roll device
KR100904123B1 (en) * 2007-12-27 2009-06-24 현대제철 주식회사 Roller clearance adjusting structure of pinch roll apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852514A (en) * 1994-08-12 1996-02-27 Ishikawajima Harima Heavy Ind Co Ltd Pinch roll device
KR100904123B1 (en) * 2007-12-27 2009-06-24 현대제철 주식회사 Roller clearance adjusting structure of pinch roll apparatus

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