JP3991153B2 - Strip measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strip measuring apparatus.
[0002]
[Prior art]
An example of a conventional twin roll casting machine is shown in Patent Document 1.
[0003]
[Patent Document 1]
JP-A-9-174204 [0004]
The twin roll casting machine shown in Patent Document 1 is shown in FIGS. 6 and 7, and includes a pair of cooling rolls 1, and a dundish 3 for forming a molten metal pool 2 of molten metal between the cooling rolls 1. The threading table 5 that can guide the strip 4 fed downward from between the cooling rolls 1 in the lateral direction, and the strip transporting direction upstream so as to sandwich the strip 4 that has passed through the threading table 5 in the plate thickness direction. An upper and lower catch roll 6, an upper and lower pinch roll 7, a rolling mill 8, an upper and lower pinch roll 9, and a coiler 10 that sequentially winds the strip 4 that has passed through the pinch roll 9. I have.
[0005]
The rolling mill 8 is composed of upper and lower work rolls 11 and upper and lower backup rolls 12.
[0006]
The strip conveyance path between the cooling roll 1 and the pinch roll 7 is surrounded by the surrounding casing 13.
[0007]
The enclosure 13 is provided with a seal member 14 that contacts the outer peripheral surface of the cooling roll 1 and a seal member 15 that contacts the outer peripheral surface of the pinch roll 7.
[0008]
The strip conveyance path from the pinch roll 7 to the work roll 11 of the rolling mill 8 is surrounded by the surrounding casing 16.
[0009]
The surrounding housing 16 is provided with a seal member 17 that contacts the outer peripheral surface of the pinch roll 7 and a seal member 18 that contacts the outer peripheral surface of the work roll 11.
[0010]
The strip conveyance path from the work roll 11 to the front of the pinch roll 9 is surrounded by an enclosing casing 19.
[0011]
The enclosure case 19 is provided with a seal member 20 that contacts the outer peripheral surface of the work roll 11.
[0012]
For these seal members 14, 15, 17, 18, and 20, a labyrinth seal or a wire seal formed by a number of metal strands is applied.
[0013]
A shutter 21 is provided at the downstream end of the surrounding casing 19 in the strip conveyance direction.
[0014]
The shutter 21 is fixed to the end portion of the surrounding casing 19 so as to be positioned below the strip 4, and the shutter 21 is positioned above the lower shielding plate 22 and along the end portion of the surrounding casing 19. An upper shielding plate 23 that can be moved up and down, a pair of side shielding plates 24 that can be moved toward and away from each other along the shielding plates 22 and 23, a cylinder 25 that moves the upper shielding plate 23 up and down, A cylinder 26 for moving the side shielding plate 24 to the left and right is provided. By operating the cylinders 25 and 26, the upper edge of the lower shielding plate 22, the lower edge of the upper shielding plate 23, and each side shielding plate 24. The area of the opening surrounded by the opposite edges can be adjusted according to the cross-sectional shape of the strip 4 (see FIG. 7).
[0015]
Inside the enclosure 13 described above, a pair of nozzles 27 facing the upper and lower surfaces of the strip 4 between the cooling roll 1 and the catch roll 6, and the strip 4 between the catch roll 6 and the pinch roll 7. A pair of nozzle groups 28 facing each other are provided.
[0016]
The nozzle group 27 is configured to be movable in the lateral direction so that the threading table 5 can rotate between a position indicated by a solid line and a position indicated by a two-dot chain line in FIG.
[0017]
A pair of nozzle groups 29 facing the upper and lower surfaces of the strip 4 between the pinch roll 7 and the work roll 11 of the rolling mill 8 is provided inside the enclosure 16.
[0018]
A pair of nozzle groups 30 facing the upper and lower surfaces of the strip 4 between the work roll 11 of the rolling mill 8 and the sealing member 15 are provided inside the enclosure 19.
[0019]
Further, a nitrogen gas supply source (not shown) is connected to the surrounding casings 13, 16, 19 and the nozzle groups 27, 28, 29, 30.
[0020]
That is, before starting the casting of the strip 4, an inert gas such as nitrogen is supplied to each surrounding casing 13, 16, 19, and the inside of these surrounding casings 13, 16, 19 is in an oxygen-free atmosphere. In addition, when the strip 4 is continuously cast, an inert gas is supplied to each of the nozzle groups 27, 28, 29, and 30 to suppress oxidation of the strip 4.
[0021]
In the twin roll casting machine as described above, in actual operation, a non-contact measuring device such as a plate thickness distribution measuring device for measuring the horizontal plate thickness distribution of the strip 4 is used for the cooling roll 1 and the rolling mill 8. It is necessary to install between the work roll 11.
[0022]
FIG. 8 shows an example of a plate thickness distribution measuring apparatus. The plate thickness distribution measuring apparatus includes an X-ray irradiator 31 that irradiates X-rays toward the upper surface of the strip 4 to be measured, and the strip 4. An X-ray reflector 32 arranged so as to face the lower surface and reflecting X-rays transmitted through the strip 4 and the intensity of the X-rays emitted from the X-ray reflector 32 and transmitted again through the strip 4 are detected. The X-ray intensity meter 33 and a moving frame 35 having wheels 34 for running in the lateral direction with respect to the strip moving path.
[0023]
The moving frame 35 has an upper arm 36 that faces the upper surface of the strip 4 and a lower arm 37 that faces the lower surface of the strip 4.
[0024]
The X-ray irradiator 31 and the X-ray intensity meter 33 are attached to the upper arm 36, and the X-ray reflector 32 is attached to the lower arm 37, and irradiates X-rays from the X-ray irradiator 31 toward the strip 4. However, the thickness distribution of the strip 4 is measured by traversing the moving frame 35.
[0025]
[Problems to be solved by the invention]
However, for example, when the strip measuring device shown in FIG. 8 is arranged between the pinch roll 7 and the work roll 11 in FIG. 6, the shape of the surrounding casing 16 must be increased, and the inert gas The amount used will also increase.
[0026]
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a strip measuring apparatus that can avoid an increase in the size of the surrounding housing.
[0027]
[Means for Solving the Problems]
To achieve the above object, in the strip measuring apparatus according to claim 1 of the present invention, a chamber formed so as to surround the strip conveyance path and having an opening facing one surface of the strip, and a peripheral edge of the opening A sealing member mounted on the sealing member, a sealing panel that is movable in the lateral direction of the strip while being in contact with the entire periphery of the sealing member on the outer side of the chamber, and a sealing panel that is positioned inside the opening. A non-contact detector mounted and opposed to one side of the strip.
[0028]
In the strip measuring device according to the second aspect of the present invention, the first oblong opening that is formed so as to surround the strip conveyance path and is opposed to one surface of the strip, and the oblong surface that is opposed to the other surface of the strip. A chamber having a second opening, a first seal member attached to the periphery of the first opening, a second seal member attached to the periphery of the second opening, and the first outside the chamber. A first sealing panel that can move in the lateral direction of the strip while maintaining a state of being in contact with the entire circumference of the first seal member and facing the second opening on the outer side of the chamber. A second sealing panel that is in contact with the entire circumference of the two sealing members and is movable in the lateral direction of the strip; and a strip mounted on the first sealing panel so as to be located inside the first opening Non-contact inspection relative to one side of the A transceiver vessels, and a reflective portion opposing the non-contact detector on the other side of and the strip is attached to the second sealed panel to be positioned inside the second opening.
[0029]
In the strip measuring apparatus according to the third aspect of the present invention, the gas flow path capable of discharging the seal gas from the inside toward the sealing panel is formed in the seal member.
[0030]
In the strip measuring apparatus according to claim 4 of the present invention, a double wall structure capable of circulating a cooling fluid is applied to the chamber and the sealing panel.
[0031]
In the strip measuring apparatus according to the first aspect of the present invention, the sealing member mounted on the entire periphery of the peripheral portion of the opening of the chamber is always in contact with the sealing panel, and the strip side of the sealing panel on which the non-contact detector is mounted. The airtightness of the chamber is maintained while allowing movement in the direction.
[0032]
In the strip measuring apparatus according to the second aspect of the present invention, the first and second sealing members are attached to the first and second sealing panels over the entire circumference of the peripheral portions of the first and second openings of the chamber. The first sealing panel that is always in contact and the non-contact detector transmitting / receiving unit is mounted and the second sealing panel that is mounted with the non-contact detector reflecting unit are allowed to move in the strip lateral direction. While maintaining the airtightness of the chamber.
[0033]
In the strip measuring apparatus according to the third aspect of the present invention, the hermeticity of the chamber is improved by the sealing gas discharged from the gas flow path of the sealing member toward the sealing panel.
[0034]
In the strip measuring apparatus according to claim 4 of the present invention, a cooling fluid is circulated inside the double-walled chamber and the sealing panel to cool these members, and the airtightness of the chamber due to thermal deformation is reduced. Prevent decline.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0036]
1 to 5 show an example of an embodiment of a strip measuring device of the present invention. This strip measuring device includes a chamber 40 formed so as to surround a strip conveying path in the circumferential direction, and the chamber 40. A first sealing panel 41a and a second sealing panel 41b that are arranged in parallel to the upper and lower surfaces and extend in the lateral direction of the strip 4, and a non-contact type strip measurement that measures the thickness distribution in the lateral direction of the strip 4 Means 42 and a carriage 43 that includes the strip measuring means 42 and is movable in the lateral direction of the strip 4 while holding the sealing panels 41a and 41b.
[0037]
The carriage 43 is a combination of the first carriage 43a and the second carriage 43b.
[0038]
These carriages 43a and 43b are arranged on two parallel rails 44 that are laid horizontally and perpendicular to the strip transport path below a predetermined position of the strip transport path on which the strip measuring means 42 is to be placed. Each has four rollable wheels 45.
[0039]
The first carriage 43a includes a lower member 46 having a wheel 45 attached to the lower portion and extending along the rail 44, an upper member 47 extending in parallel with the lower member 46 and positioned above the strip conveyance path, and these members. It is comprised with the vertical member 48 which connects the edge part by the side of the anti-strip conveyance path | route of 46,47.
[0040]
The vertical member 48 includes a traversing drive device 49 for rotating the wheel 45 positioned below the vertical member 48.
[0041]
The upper member 47 includes an X-ray irradiator 50 of the strip measuring means 42 and an X-ray intensity meter 51 in a portion near the tip.
[0042]
The lower member 46 incorporates an X-ray reflector 52 of the strip measuring means 42 at a portion near the tip.
[0043]
The second carriage 43b includes a lower member 53 having wheels 45 attached to the lower portion and extending along the rail 44, an upper member 54 extending in parallel with the lower member 53 and positioned above the strip conveyance path, and these members. It is comprised with the vertical member 55 which connects the edge part by the side of the anti-strip conveyance path | route of 53,54.
[0044]
The second carriage 43b is disposed so as to face the first carriage 43a, and the tip portions of the upper member 54 and the lower member 53 are located at the tip portions of the upper member 47 and the lower member 46 of the first carriage 43a. Are connected via pins 56, respectively.
[0045]
The chamber 40 is incorporated at a predetermined position in the longitudinal direction of the enclosure 16 (see FIG. 6) surrounding the strip conveyance path.
[0046]
The chamber 40 has a horizontally long first opening 57 facing the upper surface of the strip 4 and a horizontally long second opening 58 facing the lower surface of the strip 4.
[0047]
A first seal member 59 is attached to the upper surface of the chamber 40 over the entire peripheral portion of the first opening 57, and a second seal member 59 is attached to the lower surface of the chamber 40 over the entire peripheral portion of the second opening 58. The seal member 60 is attached.
[0048]
These seal members 59 and 60 are fitted in grooves 66 of seal mounting members 64 and 65 provided around the openings 57 and 58 (see FIGS. 4 and 5).
[0049]
A large number of springs 67 are arranged in the groove 66 to urge the seal members 59 and 60 so as to be separated from the strip 4.
[0050]
A dust keeper 68 is attached to each of the seal attaching members 64 and 65 over the entire outer periphery.
[0051]
Each of the seal members 59 and 60 is formed of a metal material having excellent wear resistance, and the dust keeper 68 is formed of a polymer material having excellent heat resistance and high elasticity.
[0052]
Each seal member 59, 60 is provided with a gas passage 69 penetrating in the vertical direction, and is fed from a seal gas supply source (not shown) to the gap between the groove 66 and the seal members 59, 60. The seal gas is discharged to the outside through the gas flow path 69.
[0053]
As the sealing gas, the same kind of inert gas that should be filled in the enclosure 16 is used.
[0054]
The first sealing panel 41a is suspended from the upper members 47 and 54 of the carriages 43a and 43b so as to maintain a state in which the first sealing member 59 is in contact with the entire circumference of the first sealing member 59 and covers the first opening 57. It is suspended through the members 38 and 39 for use.
[0055]
The second sealing panel 41b is bolted to the lower members 46 and 53 of the carriages 43a and 43b so that the second sealing panel 41b is in contact with the entire circumference of the second sealing member 60 and covers the second opening 58. Yes.
[0056]
As a result, the sealing panels 41a and 41b move laterally while maintaining a state where they are in contact with the sealing members 59 and 60 as the two carriages 43a and 43b move.
[0057]
Further, a double wall structure (not shown) through which a cooling fluid can flow is applied to the chamber 40 and the sealing panels 41a and 41b.
[0058]
The X-ray irradiator 50 attached to the upper member 47 of the first carriage 43 a emits X-rays toward the upper surface of the strip 4, and the X-ray intensity meter 51 attached to the upper member 47 transmits the strip 4. The intensity of the X-ray reflected from the X-ray reflector 52 attached to the lower member 46 and transmitted again through the strip 4 is detected.
[0059]
Between the upper member 47 and the first sealing panel 41a, there are an X-ray traveling path that passes through these members and is emitted from the X-ray irradiator 50, and an X-ray traveling path toward the X-ray intensity meter 51. Tubular X-ray shielding members 61 and 62 are provided so as to individually surround them.
[0060]
Between the lower member 46 and the first sealing panel 41b, the X-rays passing through these members and traveling toward the X-ray reflector 52 and the traveling path of the X-rays reflected by the X-ray reflector 52 are surrounded. A short tubular X-ray shielding member 63 is provided.
[0061]
The X-ray shielding members 61, 62, 63 are also constituent elements of the strip measuring means 42.
[0062]
In the strip measuring apparatus shown in FIGS. 1 to 5, when the plate thickness distribution of the strip 4 is measured by the strip measuring means 42, if the traversing drive device 49 is operated to traverse the carriage 43, The first sealing member 41 and the dust keeper 68 attached to the entire periphery of the peripheral portion of the first opening 57 are laterally moved while always in contact with the first sealing member 41 and the peripheral portion of the second opening 58 of the chamber 40. The second sealing panel 41b moves laterally while always in contact with the second sealing member 60 and the dust keeper 68 mounted over the entire circumference, and thereby the airtightness of the chamber 40 is maintained.
[0063]
Further, the seal gas supplied from the seal gas supply source to the gap between the groove 66 and the seal members 59 and 60 is discharged from the gas flow path 69 toward the sealing panels 41a and 41b, and the air to the chamber 40 is discharged. Deter inflow.
[0064]
In addition, the cooling fluid is circulated inside the double-walled chamber 40 and the sealing panels 41a and 41b to cool them and prevent deterioration in airtightness due to thermal deformation of the chamber 40 and the sealing panels 41a and 41b. To do.
[0065]
As described above, in the strip measuring apparatus shown in FIGS. 1 to 5, since the strip measuring means 42 can be installed outside the chamber 40 surrounding the strip conveyance path, it is possible to avoid an increase in the size of the enclosure 16 and to provide an inert gas. The amount of use can be reduced.
[0066]
It should be noted that the strip measuring apparatus of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the gist of the present invention.
[0067]
【The invention's effect】
As described above, according to the strip measuring apparatus of the present invention, various excellent effects as described below can be obtained.
[0068]
(1) In the strip measuring apparatus according to the first aspect of the present invention, the sealing panel in which the sealing member mounted over the entire periphery of the peripheral portion of the opening of the chamber is always in contact with the sealing panel and the non-contact detector is mounted. Since the airtightness of the chamber is maintained while allowing the movement of the strip, it is possible to dispose the strip measuring device outside the surrounding casing, and to avoid an increase in the size of the surrounding casing.
[0069]
(2) In the strip measuring apparatus according to the second aspect of the present invention, the first and second sealing members mounted on the entire peripheral portion of the first and second openings of the chamber are the first and second seal members. While allowing the movement of the first sealing panel that is always in contact with the sealing panel and is equipped with the transmission / reception part of the non-contact detector and the second sealing panel that is equipped with the reflection part of the non-contact detector, Since the airtightness of the chamber is maintained, the strip measuring device can be disposed outside the surrounding casing, and the enlargement of the surrounding casing can be avoided.
[0070]
(3) In the strip measuring apparatus according to claim 3 of the present invention, the sealing gas is discharged from the gas flow path of the sealing member toward the sealing panel, whereby the airtightness of the chamber can be improved.
[0071]
(4) In the strip measuring apparatus according to claim 4 of the present invention, the cooling fluid is circulated inside the double-walled chamber and the sealing panel, and these members are cooled. A decrease in the hermeticity of the chamber can be prevented.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an example of an embodiment of a strip measuring apparatus according to the present invention.
FIG. 2 is a view taken in the direction of arrows II-II in FIG.
FIG. 3 is a view taken in the direction of arrows III-III in FIG.
4 is a view taken along arrow IV-IV in FIG. 1;
FIG. 5 is an enlarged view of a seal member mounting portion related to FIG. 4;
FIG. 6 is a conceptual diagram showing an example of a conventional twin roll casting machine.
7 is a front view of a shutter related to FIG. 6. FIG.
FIG. 8 is a conceptual diagram showing an example of a conventional plate thickness distribution measuring apparatus.
[Explanation of symbols]
40 Chamber 41a First sealing panel 41b Second sealing panel 42 Strip measuring means (non-contact detector)
50 X-ray irradiator (transceiver)
51 X-ray intensity meter (transceiver)
52 X-ray reflector (reflection part)
57 1st opening 58 2nd opening 59 1st sealing member 60 2nd sealing member 69 Gas flow path

Claims (4)

A chamber formed so as to surround the strip conveyance path and provided with an opening corresponding to one surface of the strip, a seal member mounted on a peripheral edge of the opening, and a seal member facing the opening on the outer side of the chamber A sealing panel that can move in the lateral direction of the strip while being in contact with the periphery, and a non-contact detector that is mounted on the sealing panel so as to be positioned inside the opening and that is opposed to one surface of the strip. A strip measuring device. A chamber formed so as to surround the strip conveying path and having a horizontally long first opening facing one side of the strip and a horizontally long second opening facing the other surface of the strip; A first seal member attached to the periphery of the opening, a second seal member attached to the periphery of the second opening, and opposite the first opening on the outer side of the chamber and on the entire circumference of the first seal member A first sealing panel that maintains the contact state and is movable in the lateral direction of the strip, and maintains a state of contact with the entire circumference of the second seal member, facing the second opening on the outer side of the chamber. A second sealing panel movable laterally of the strip, and a transmitter / receiver of a non-contact detector mounted on the first sealing panel so as to be located inside the first opening and facing one side of the strip And to be located inside the second opening Strip measuring apparatus characterized by comprising a reflecting portion opposing non-contact detector on the other side of and the strip is attached to the second blockade panel. The strip measuring apparatus according to claim 1, wherein a gas flow path capable of discharging a sealing gas from the inside toward the sealing panel is formed in the sealing member. The strip measuring device according to any one of claims 1 to 3, wherein a double wall structure capable of circulating a cooling fluid is applied to the chamber and the sealing panel.

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