WO2010044165A1 - ストリップ表裏面の検査装置及び検査方法 - Google Patents
ストリップ表裏面の検査装置及び検査方法 Download PDFInfo
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- WO2010044165A1 WO2010044165A1 PCT/JP2008/068840 JP2008068840W WO2010044165A1 WO 2010044165 A1 WO2010044165 A1 WO 2010044165A1 JP 2008068840 W JP2008068840 W JP 2008068840W WO 2010044165 A1 WO2010044165 A1 WO 2010044165A1
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- Prior art keywords
- strip
- gripping
- sets
- gripping devices
- tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
Definitions
- the present invention relates to an inspection apparatus and inspection method for strip front and back surfaces.
- the upper and lower work rolls of the rolling mill continuously press the strip to perform plastic processing, so the surface state of the upper and lower work rolls is transferred to the front and back of the strip.
- this rolling operation for example, if there are wrinkles on the surface of the work roll, a harmful wrinkle or pattern as a product is transferred over the entire length of the coil on the front and back surfaces of the strip in synchronization with the rotation cycle of the rolling work roll.
- the ridges or patterns are transferred to the front and back surfaces of the rolled strip, it can not be removed in various steps after the rolling operation, which causes a reduction in the product yield.
- honing is performed to grind the front and back surfaces of the strip with a grinding stone.
- this inspection method a method in which a strip immediately after rolling is cut out and inspected in-line by an inspection device disposed at the rear of a rolling mill, and a rolled strip is wound into a coil and then the coil remains as it is There is a method of carrying out, cutting out a strip unwound from a coil and inspecting it off-line.
- Patent Document 2 an inspection method is disclosed in which two sets of strip gripping devices are separated, tension is generated, and rotated 180 degrees, and the front and back surfaces of the rolled strip are inspected.
- Patent Document 2 An inspection method is disclosed in which two sets of strip gripping devices are separated, tension is generated, and rotated 180 degrees, and the front and back surfaces of the rolled strip are inspected.
- Patent Document 2 An inspection method is disclosed in which two sets of strip gripping devices are separated, tension is generated, and rotated 180 degrees, and the front and back surfaces of the rolled strip are inspected.
- Patent Document 2 An inspection method is disclosed in which two sets of strip gripping devices are separated, tension is generated, and rotated 180 degrees, and the front and back surfaces of the rolled strip are inspected.
- Patent Document 2 An inspection method is disclosed in which two sets of strip gripping devices are separated, tension is generated, and rotated 180 degrees, and the front and back surfaces of the rolled strip are inspected.
- Patent Document 2 An inspection method is disclosed in which two sets of strip gripping devices are separated
- the tension generating device (tension station) can maintain the absence of contact between the strip and the inspection table at any position of the two sets of gripping devices, but in this inspection system honing and There is a problem that the surface that can be inspected is only the upper surface.
- Patent Document 2 in order to separate the two sets of gripping devices and rotate them 180 degrees while maintaining the tension applied to the strip, in order to provide the two sets of gripping devices with the separation function and the rotation function There is a problem that the structure is double structure and complicated, and the equipment is enlarged.
- the tension generated in the strip is determined by the amount of separation between the two sets of gripping devices. For example, when a distance of 10 m between gripping devices is separated by 1 mm, a stress of about 20 N / mm 2 is generated.
- the strip tension at the time of inspection is set to a tension value in the range of about 10 N / mm 2 to 50 N / mm 2 according to the thickness of the strip. That is, the distance between gripping devices is set in the range of 0.5 mm to 2.5 mm.
- the set tension of the strip becomes excessive and breakage of the strip should be avoided.
- the positioning accuracy for separating the two sets of holding devices is about 0.1 mm, that is, the tension
- the amount of fluctuation should be about 2 N / mm 2 .
- the tip end of the strip may stick to the rear surface table of the inspection apparatus and it may become impossible to pass through.
- An object of the present invention is to provide an inspection apparatus for the front and back of the strip which is excellent in economy because the structure of the inspection apparatus can be simplified and the pressing apparatus can be miniaturized. Furthermore, the tension can be set with high accuracy, and by minimizing the tension fluctuation with respect to the set tension at the time of strip front and back inspection, the risk of strip breakage is reduced, and the safety and reliability of the strip front and back are high. It is providing a test apparatus.
- Another object of the present invention is to provide a strip front and back surface inspection apparatus in which the reliability of the threading operation after the inspection is improved.
- Another object of the present invention is to provide a strip front / back surface inspection apparatus for correcting warpage in the strip width direction and suppressing wrinkles generated when held by the holding device.
- An inspection apparatus for solving the above-mentioned problems is an inspection apparatus for strip front and back surfaces rolled by a rolling mill, comprising two sets of gripping devices for gripping both sides in the longitudinal direction of the strip; It is characterized by having at least two pressing devices for pressing the front surface or the back surface of the strip at any position between the gripping devices.
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to the first aspect, wherein the two sets of gripping devices hold the griped strips in the strip width direction gripping center position of the gripping devices.
- the at least two pressing devices are configured to rotate at an arbitrary angle with the vicinity as an axis, and the surface of the strip rotated at an arbitrary angle by the gripping devices at any position between the two sets of gripping devices. Alternatively, it is characterized in that the back side is pressed.
- An inspection apparatus for solving the above-mentioned problems is an inspection apparatus for strip front and back rolled by a rolling mill, which grips both sides in the longitudinal direction of the strip and The front or back surface of a strip rotated to an arbitrary angle by an arbitrary position between the two sets of holding devices, and two sets of holding devices configured to rotate to an arbitrary angle with the vicinity as an axis. And at least one pressing device for pressing the
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to any one of the second through third aspects of the present invention, wherein the holding device and the pressing device are the holding device It is characterized in that the strip gripped in the above is attached to a rotating frame which rotates at an arbitrary angle with the strip centering position in the strip width direction of the gripping device or the vicinity thereof as an axis.
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to any one of the first through fourth aspects of the present invention, wherein the holding device is disposed between the two sets of holding devices.
- a strip transport device for transporting the strip longitudinally at the height held by the
- An inspection method for solving the above-mentioned problems is characterized in that, in the inspection device according to the fifth aspect of the present invention, the strip conveying device has a structure capable of moving up and down.
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to any one of the first through sixth aspects of the present invention, wherein at least one of the two sets of gripping devices measures tension. It has a device, and it has a control device which controls the amount of pressing of the above-mentioned pressing device so that the strip tension measured with this tension measuring device may become set tension.
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to any one of the first through seventh aspects, wherein the strip is conveyed from between the two sets of gripping devices.
- the pressing device disposed on the outlet side is characterized by giving a desired warp shape to the tip end of the strip.
- An inspection apparatus for solving the above-mentioned problems is the inspection apparatus according to any one of the first aspect through the eighth aspect, wherein the two sets of gripping devices And a tension generating device for applying tension to the strips respectively gripped.
- An inspection method for solving the above-mentioned problems is characterized in that the strip is held at any position between the gripping devices by at least two pressing devices while both sides in the longitudinal direction of the strip are gripped by two sets of gripping devices.
- the front or back surface of the strip is pressed, and the front or back surface of the strip is inspected.
- An inspection method for solving the above-mentioned problems is the inspection method according to the tenth aspect, wherein the strip gripped by the two sets of gripping devices The core is rotated at an arbitrary angle, and at least two pressing devices press the front or back surface of the rotated strip at an arbitrary angle by the holding device, and inspect the front or back surface of the strip at an arbitrary angle. I assume.
- An inspection apparatus for solving the above-mentioned problems is an inspection method for strip front and back rolled by a rolling mill, in a state of being gripped by two sets of gripping devices gripping both sides in the strip longitudinal direction
- the strip width direction gripping center position or the vicinity of the gripping device gripped by the two gripping devices by pressing the front or back surface of the strip at any position between the two gripping devices with at least one pressing device As an axial center, it is characterized in that it is rotated to an arbitrary angle and the front surface or the back surface of the strip is inspected.
- An inspection method for solving the above-mentioned problems is the strip conveyance disposed between the two sets of gripping devices according to the inspection method according to any of the tenth aspect through the twelfth aspect
- the device is characterized in that the strip is conveyed longitudinally at the level at which it is gripped by the gripping device.
- An inspection method according to a fourteenth aspect of the present invention for solving the above-mentioned problems is the inspection method according to the thirteenth aspect, wherein when the two sets of gripping devices and the strip rotate, the strip conveying device is outside the rotation radius. It is characterized by raising and lowering for retraction.
- An inspection method according to a fifteenth invention for solving the above-mentioned problems is provided in at least one of the two sets of gripping devices in the inspection method according to any one of the tenth invention to the fourteenth invention.
- the pressing amount of the pressing device is controlled so that the strip tension measured by the tension measuring device becomes the set tension.
- An inspection method according to a sixteenth invention for solving the above-mentioned problems is the inspection method according to any one of the tenth to fifteenth inventions, wherein the strip is conveyed from between the two sets of gripping devices to the outlet side. A desired warping shape is given to the tip end of the strip by the pressing device arranged.
- An inspection method according to a seventeenth aspect of the present invention for solving the above-mentioned problems is the inspection method according to any one of the tenth aspect through the sixteenth aspect of the present invention, wherein the two sets of gripping devices To apply tension to the strips prior to each gripping.
- the structure of the inspection device can be simplified, and the pressing device can be miniaturized, so that the inspection device for the strip front and back surface with excellent economy can be provided.
- the tension can be set with high accuracy, and by minimizing the tension fluctuation with respect to the set tension at the time of strip front and back inspection, the risk of strip breakage is reduced, and the safety and reliability of the strip front and back are high.
- An inspection device can be provided. Furthermore, it is possible to provide an inspection device for correcting the warp in the width direction of the strip and an inspection device for the front and back of the strip which suppresses the wrinkles generated when being held by the holding device.
- FIG. It is the schematic which shows the state which raised the strip conveying apparatus to holding
- the schematic of the strip inspection apparatus which concerns on the Example which concerns on the best embodiment of this invention it is the schematic which arrange
- any position between the two sets of gripping devices by at least one pressing device The strip is gripped by pressing the front or back surface of the strip and rotating it at an arbitrary angle with the gripping device in the width direction of the strip gripped by the two sets of gripping devices or in the vicinity of the strip width direction.
- the inspection apparatus can be simplified by setting the two sets of gripping devices so as not to displace in the longitudinal direction of the strip and separating the tension setting and the gripping function.
- the honing operation and the optical inspection at an arbitrary angle make it easy to identify harmful wrinkles or patterns on the front and back surfaces of the strip.
- the elevating and lowering strip conveying device is disposed in the two sets of holding devices, and the elevating and lowering strip conveying device is configured to hold the strip in the two holding devices before holding the strip in the longitudinal direction.
- the gripping height By setting the gripping height, the strip length between the gripping devices can be minimized, the amount of slack of the strip can be suppressed, and the fluctuation of the strip during rotation of the two sets of gripping devices can be reduced. it can.
- the sheet passing function and the rotating function at the time of inspection can be provided with a small occupied space.
- At least one of the two sets of gripping devices has a tension measuring device, and the pressing amount of at least one pressing device that presses the front or back surface of the strip is set so that the tension of the strip measured by the tension measuring device becomes the set tension.
- the pressing device disposed on the outlet side imparts a desired warped shape to the tip end of the strip, it is possible to ensure sheet passing stability after the end of the inspection.
- the strip length between the gripping devices at the time of gripping the strip is set by applying tension to the strip before gripping the both sides in the longitudinal direction of the strip set at the gripping heights of the two sets of gripping devices by the gripping device. It is possible to minimize and suppress the fluctuation of the strip when rotating the two sets of gripping devices.
- FIG. 1 is a schematic view of a rolled strip inspection apparatus according to the present embodiment.
- the upstream stand 100 and the downstream stand 200 are installed with the same distance as the strip 1 which is rolled by a rolling mill and cut out with a predetermined length, and the upstream stand 100 and Between the downstream side stand 200 and the strip transport device 8 having an elevating function is disposed. Further, an inlet conveyance table 9 is disposed on the upstream side of the upstream stand 100, and an outlet conveyance table 10 is disposed on the downstream side of the downstream stand 200.
- a disk-like entrance side rotary frame 5 having a slit 5a having an opening through which the strip 1 can pass is rotatably supported on two support rollers 40.
- a plurality of regulating rollers 30 are interposed between the upstream side stand 100 and the entrance side rotation frame 5 in order to prevent the movement of the entrance side rotation frame 5 in the longitudinal direction while allowing the rotation of the entrance side rotation frame 5. It is disguised.
- a pair of inlet gripping devices 3a and 3b are attached to the inlet side of the inlet rotational frame 5 so as to be positioned above and below the slit 5a. .
- the entrance gripping devices 3a and 3b are gripped by holding the both ends of the strip 1 up and down. Both may be movable up and down with respect to the entrance rotation frame 5, at least one of which is inserted.
- the structure may be such that it is movable up and down with respect to the side rotation frame 5 and the other is fixed to the entry side rotation frame 5.
- the entrance side pressing device 7a is attached to the upper side of the slit 5a on the exit side of the entrance side rotation frame 5.
- the entry side pressing device 7 a has a structure that can move up and down with respect to the entry side rotation frame 5, and generates tension in the strip 1 by pressing the strip 1 from above.
- a disc-like delivery side rotary frame 6 having a slit 6a having an opening to which the strip 1 can pass is rotatably supported on two support rollers 40. It is done.
- a plurality of regulating rollers 30 are interposed between the downstream side stand 200 and the outlet side rotary frame 6 in order to prevent the movement of the inlet side rotary frame 6 in the longitudinal direction while allowing the rotation of the outlet side rotary frame 6. It is disguised.
- a pair of exit gripping devices 4a and 4b are attached to the exit side of the exit rotation frame 6 so as to be positioned above and below the slit 6a.
- the entrance side gripping devices 4a and 4b are gripped by holding the both ends of the strip 1 up and down. Both may be movable up and down with respect to the exit side rotation frame 6, and at least one side is exposed.
- the structure may be such that it is movable up and down with respect to the side rotation frame 6 and the other is fixed to the delivery side rotation frame 6.
- an outlet side pressing device 7 b is attached to the inlet side of the outlet side rotating frame 6 above the slit 6 a.
- the delivery side pressing device 7 b has a structure capable of moving up and down with respect to the delivery side rotation frame 6, and generates tension in the strip 1 by pressing the strip 1 from above.
- the inlet-side rotary frame 5 and the outlet-side rotary frame 6 rotate with electrical synchronization, but as shown in FIG. 6, they may be connected by a separator 11 in order to achieve mechanical synchronization during rotation. Furthermore, as shown in FIG. 6, the separator 11 connecting the input / output side rotating frames 5 and 6 may be provided with a pressing device 7 having the same function as the pressing devices 7 a and 7 b.
- the separator 11 not only takes mechanical synchronization when the input and output side rotating frames 5 and 6 rotate, but also serves as a frame to which the pressing device 7 is attached.
- the pressing device 7 is disposed at an arbitrary position between the input and output side gripping devices 3a, 3b, 4a and 4b.
- the rolled strip 1 is divided into lengths from several meters to about 15 m, which is necessary and sufficient, by a shear on the outlet side of the cold rolling mill (not shown), for optical inspection of the front and back of the strip.
- the leading end of the strip 1 passes through the inlet side gripping devices 3a and 3b which are transported on the inlet side transport table 9 and opened, and the inlet and outlet side gripping devices 3a, 3b, 4a and 4b.
- the strip transport device 8 raised to a grip height 2 (indicated by a dot-and-dash line in the drawing) passes over and is transported until it reaches the open-side outlet gripping devices 4a and 4b.
- the rear end of the strip 1 After the rear end of the strip 1 reaches the open input side gripping devices 3a and 3b, the rear end of the strip 1 is gripped by the input side gripping devices 3a and 3b. Thereafter, the leading end of the strip 1 is gripped by the output gripping devices 4a and 4b. At this time, the strip conveying device 8 is raised to the gripping height 2 of the entry and exit gripping devices 3a, 3b, 4a and 4b before the leading edge of the strip in the longitudinal direction is gripped by the exit gripping devices 4a and 4b.
- FIG. 1 is a schematic view showing a point in time when the gripping of the strip 1 is completed by the two sets of entry and exit side gripping devices 3a, 3b, 4a and 4b.
- the strip conveying device After completion of gripping of the strip 1 by the two sets of inlet and outlet gripping devices 3a, 3b, 4a, 4b, the strip conveying device is set to the gripping height 2 of the inlet and outlet gripping devices 3a, 3b, 4a, 4b 8, as shown in FIG. As a result, the strip 1 is not pressed against the strip conveying device 8 by the in / out side pressing devices 7a, 7b, and interference between the in / out side pressing devices 7a, 7b and the strip conveying device 8 can be avoided. After the lowering of the strip conveying device 8 is completed, the strip 1 is pressed by the entry and exit side pressing devices 7a and 7b so that the tension generated in the strip 1 becomes the desired tension, and the tension is generated in the strip 1.
- the first inspection surface of the strip 1 is subjected to a honing operation to perform an optical inspection.
- the entry and exit side pressing devices 7a and 7b for pressing the strip surface may have a roller structure in contact with the strip surface to prevent the strip surface from being wrinkled.
- FIG. 2 is a schematic view showing a state in which the strip conveying device 8 is lowered to the lowered position and the strip 1 is pressed by the in / out side pressing devices 7a and 7b such that the tension generated in the strip 1 is a desired tension. .
- the gripping center position of the gripping devices 3a, 3b, 4a and 4b in the strip width direction the electrically synchronized input / output rotary frames 5 and 6 are rotated 180 degrees with the vicinity as an axis, and the second inspection surface of the strip 1 is subjected to a honing operation to perform an optical inspection.
- the inspection surface by tilting the inspection surface to an arbitrary angle, it becomes easy to detect harmful wrinkles or patterns on the front and back of the strip.
- FIG. 3 shows the central position of the gripping devices 3a, 3b, 4a, 4b in the width direction of the strip and the vicinity of the gripping axis while maintaining the desired tension generated in the strip 1 by the entry / exit side pressing devices 7a, 7b. It is the schematic which shows the state which rotated 180 degrees the input-output side rotational frames 5 and 6 which took the electrical synchronization as a core.
- the inspection apparatus in the inspection method for strip front and back rolled by a rolling mill, two sets of gripping devices 3a, 3b, 4a, 4b gripping both sides in the longitudinal direction of the strip After gripping each, the strip surface or back surface at any position between the two sets of gripping devices 3a, 3b, 4a, 4b is pressed by at least one pressing device 7, 7a, 7b, and the two sets of gripping devices 3a , 3b, 4a, 4b by rotating the gripping device in the strip width direction gripping center position or the vicinity of the gripping device at an arbitrary angle, the two sets of input / output gripping devices 3a, 3b, 4a , 4b are not displaced in the longitudinal direction of the strip 1 after gripping the strip, and by separating the tension setting and the gripping function, the inspection apparatus can be simplified and the pressing devices 7, 7 , 7b and it is possible to provide an inspection apparatus of the strip front and back surfaces with excellent economy for can be miniaturized.
- the strip transport device 8 is raised to the gripping height 2 of the input / output gripping devices 3a, 3b, 4a, 4b, and the strip between the two sets of input / output gripping devices 3a, 3b, 4a, 4b.
- the safety during one rotation of the strip can be improved. Furthermore, by disposing the pressing devices 7, 7a, 7b on the upper side of the holding height 2 of the input / output side gripping devices 3a, 3b, 4a, 4b, that is, on the opposite side to the arrangement of the strip conveying device 8, the strip conveying device Since there is no interference between the pressing device 7 and the pressing devices 7, 7a and 7b, the strip transport device 8 installed between the two sets of input and output gripping devices 3a, 3b, 4a and 4b can secure a sufficient length. Stability can be improved and work efficiency is improved.
- FIG. 5 shows a prior art method of tensioning the strip by separating the two sets of gripping devices (US Pat. No. 5,648,859) and at least one pressing device at any position between the two sets of gripping devices of the present invention It compares the stress ⁇ (unit tension applied to the strip) generated by the strain of the strip with the method of the present invention for applying tension to the strip by pressing the surface.
- the tension due to its own weight is excluded, and the stress acting on each, that is, the unit tension, is calculated from the elongation of the strip by separation of the two sets of gripping devices and the elongation of the strip by pressing by the pressing device did.
- the equation of stress ⁇ ( ⁇ L / L) ⁇ E.
- E indicates the longitudinal elastic modulus
- ⁇ L indicates the strip elongation amount
- L indicates the distance between the strip gripping devices.
- the strip elongation amount ⁇ L is calculated from the amount of separation of two sets of gripping devices, and in the case of the present invention in which the strip surface is pressed by a pressing device. Calculated from the amount of pressure.
- Strip tension during inspection of the rolled strip front and back surfaces may be presented in unit tension ranges from 10 N / mm 2 of about 50 N / mm 2, to set the tension value according to the thickness of the strip.
- a stress (unit tension) of about 10 N / mm 2 is generated when the distance between the gripping devices of 10 m is separated by 0.5 mm. .
- the gripping positioning accuracy of the method of separating the two sets of gripping devices must be about 0.1 mm, that is, about 2 N / mm 2 as the unit tension fluctuation amount.
- high precision parts In order to maintain an accuracy of 0.1 mm in a dual structure having a distance between gripping devices of 10 m and having a separation function and a rotation function, high precision parts must be widely used and furthermore rigidity must be increased.
- the in / out side pressing devices 7a and 7b which are the best embodiments of the present invention, are attached to the in / out side rotating frames 5 and 6, respectively, to press between two sets of gripping devices
- the pressing amount is set in the range of about 20 mm to about 50 mm in the range of about 10 N / mm 2 to 50 N / mm 2
- the maximum fluctuation of 2 N / mm 2 can be accommodated, so the risk of strip breakage during inspection can be reduced, and the positioning accuracy of the amount of pressing can be sufficiently secured. It can be set.
- FIGS. 1 to 3 since the separator 11 is not necessary, the workability of the visual inspection of the strip can be improved, and the weight and cost of equipment can be reduced.
- the pressing amount is about 50 mm to about 110 mm in the range of about 10 N / mm 2 to 50 N / mm 2. It becomes a setting range of degree, and the setting range can be relatively enlarged. Even if the amount of pressure change is 1 mm, it is only a maximum fluctuation of 1 N / mm 2 , and the positioning accuracy of the amount of pressure can be sufficiently secured. A highly robust tension setting device capable of setting tension with high accuracy be able to. In addition, the distance between the fulcrums becomes about half, and the correction effect of the warp in the strip width direction can also be improved.
- the two sets of input / output side gripping devices 3a, 3b, 4a, 4b are not displaced in the longitudinal direction of the strip, and tension setting and gripping functions are separated to set tension with high accuracy.
- Strip it is possible to reduce the risk of strip breakage and simplify the inspection device, and it is possible to reduce the cost and safety and reliability of the strip front and back. Can be provided.
- the strip tension set when the strip front and back surfaces test as described above, the unit tension ranges from 10 N / mm 2 of about 50 N / mm 2, the strip thickness, the tension value in accordance with the plate width Set
- FIG. 7 arranges the ingress pressing device 7a and the egress pressing device 7b between the ingress gripping devices 3a and 3b and the egress gripping devices 4a and 4b as a pressing device for pressing the strip surface, and the egress gripping device Attach the tension measuring device 12 to 4a and 4b, and output the pressing amount control command to the entry side pressing device 7a and the exit side pressing device 7b so that the strip tension measured by the tension measurement device 12 becomes the set tension.
- the method of measuring the tension of the strip 1 may be a method of measuring with the tension measuring device 12 attached to the outlet side gripping devices 4a and 4b, or a method of calculating from the pressing force and the pressing amount of the pressing device 7.
- the tension of the strip 1 is controlled according to the flow chart described in FIG. First, both sides in the longitudinal direction of the strip 1 are gripped by the entry side gripping devices 3a and 3b and the exit side gripping devices 4a and 4b, respectively, and when lowering of the strip conveying device 8 is completed (step S1), the pressing device 7a, 7b is lowered to the holding height 2 of the in / out side holding devices 3a, 3b, 4a, 4b (step S2), setting of the in / out side holding devices 3a, 3b, 4a, 4b in the holding height 2 is completed (ie, in / out After gripping the strip 1 by raising and lowering the side gripping devices 3a, 3b, 4a, 4b) (step S3), the pressing devices 7a, 7b are lowered until tension is detected by the tension measuring device 12 based on pressing force control.
- step S4 And the strip 1 is pressed (step S4).
- the pressing devices 7a and 7b control the amount of pressing so as to hold the desired strip tension setting value (steps S7 and S8), and until the strip front and back surface inspection is completed ( Step S10), operate under pressure control (step S6).
- the strip tension measurement value measured by the tension measuring device 12 in the process of pressing amount control after the pressing devices 7a and 7b are set to the holding height 2 position of the entry and exit side gripping devices 3a, 3b, 4a and 4b Since the pressing amount control device 13 is constantly fed back to control the pressing amount, the tension can be set with high accuracy, and the tension fluctuation with respect to the setting tension at the time of the strip front and back surface inspection is minimized to visually Since the tension setting conditions at the time of inspection can be made constant, it is possible to provide a highly reliable inspection apparatus for the front and back of the strip. Also, by keeping the tension value constant, the risk of strip breakage can be reduced and safety can be improved.
- the strip tension measurement value of the tension measuring device 12 detects zero in the process of setting the strip tension of the pressing devices 7a, 7b, the gripping failure of the gripping devices 3a, 3b, 4a, 4b or the strip 1 It is immediately determined that the pressing by the pressing devices 7a and 7b is stopped, and a warning is issued from the pressing amount control device 13 (step S11). As a result, protection of the inspection apparatus and abnormality detection can be performed, so that it is possible to provide a safe and reliable inspection apparatus for the front and back of the strip.
- FIG. 9 is a schematic view of the case where the outlet pressing device 7 b is attached to the outlet rotation frame 6 and the inlet pressing device 7 a is attached to the separator 11.
- FIG. 10 shows a state in which a desired plate warpage shape (shape in which the tip end of the strip is slightly curved upward) is given by the exit side pressing device 7b, and a desired tension is given by the entrance side pressing device 7a.
- the tip end of the strip 1 is disposed on the rear surface of the inspection apparatus at the time of dispensation of the strip 1 after the inspection is completed (conveying the strip 1 from between the input and output holding devices 3a, 3b, 4a, 4b).
- the operation efficiency is lowered due to a problem that sticking occurs with the delivery side conveyance table 10 and the sheet can not be passed.
- the pressing amount control device 13 controls the exit side pressing device from the holding height 2 so that the tip of the strip 1 has a desired plate warp shape.
- the pressing amount of 7b is calculated, and the strip 1 is pressed by the delivery side pressing device 7b disposed in the vicinity of the delivery side gripping devices 4a and 4b based on the computed value to give a plate warp shape.
- the pressing amount of the outlet pressing device 7b for giving a desired plate warp shape is the distance between the outlet pressing device 7b and the outlet gripping devices 4a and 4b, the mechanical property of the strip 1, the plate thickness, the plate width, etc. It is calculated and determined based on FIG. 11 is a schematic view showing a state in which a desired plate warp shape is given to the tip of the strip 1.
- the exit pressing device 7 b is retracted to the upper standby position, and then the strip conveying device 8 is brought into contact with the strip 1 at a high level.
- the height is raised to a position (lower than the gripping height 2), and then the exit gripping devices 4a and 4b are opened.
- the strip conveying device 8 is raised to the gripping height 2, the entry side gripping devices 3 a and 3 b are opened, and the discharge of the strip 1 is started.
- FIG. 13 is a schematic view showing the state immediately before the start of dispensing of the strip 1.
- the outlet pressing device 7b is retracted to the upper standby position before releasing the outlet gripping devices 4a and 4b, and then the strip conveying device 8 is raised to the gripping height 2, the leading end of the strip 1 is Such a situation needs to be avoided since the warped shape of the is bent back.
- the exit-side pressing device 7b imparts a desired plate warp shape to the strip 1
- the entry-side pressing device 7a imparts a desired strip tension to set tension and warp shape.
- Function can be divided. Since the functions of tension setting and plate warping are divided by the entry side pressing device 7a and the exit side pressing device 7b, the amount of each pressing differs depending on the desired amount of warping and tension.
- the entrance side pressing device 7a is attached to the separator 11, it may be attached to the entrance side rotation frame 5.
- the outlet pressing device 7 b is attached to the outlet rotation frame 6, but may be attached to the separator 11.
- a tension generating device 14 is provided on the entry side of the input gripping devices 3a, 3b. Place.
- the tension generation device 14 can select various methods such as a method of applying a tension by a tangential force of a pinch roller, a method of gripping with a plate and separating the plate from the gripping devices 4a and 4b.
- the arrangement position of the tension generating device 14 may be on the outlet side of the outlet side gripping devices 4a and 4b, or one each may be disposed on the inlet and outlet sides.
- the rolled strip 1 is divided into lengths from several meters to about 15 m, which is necessary and sufficient, by a shear on the outlet side of the cold rolling mill (not shown), for optical inspection of the front and back of the strip.
- a shear on the outlet side of the cold rolling mill (not shown), for optical inspection of the front and back of the strip.
- the tension generating device 14 and the input gripping devices 3a and 3b which are open, and the strip 1 passes through the strip transporting device 8 raised to the gripping height 2 It is transported until it reaches the open-side outlet gripping devices 4a and 4b. After the leading end of the strip 1 reaches the opened outlet gripping devices 4a and 4b, the leading edge of the strip 1 is gripped by the outlet gripping devices 4a and 4b.
- a tension generating device 14 disposed on the entry side of the entrance side gripping devices 3a and 3b, tension is applied to the strip 1 and tension is applied, and the rear end portion of the strip 1 is input by the entrance side gripping devices 3a and 3b.
- the two sets of gripping by at least one pressing device Pressing the front or back surface of the strip at any position between the devices and rotating it at an arbitrary centering position in or around the strip width direction of the gripping device gripped by the two sets of gripping devices ,
- the two sets of gripping devices are structured so as not to be displaced in the longitudinal direction of the strip, and the tension setting and the gripping function can be separated and the inspection apparatus can be simplified and the two sets of gripping By pressing the strip between the devices, at least one pressing device can be miniaturized, which is economical.
- a strip transport device is disposed between the two sets of gripping devices, and the liftable strip transport device is used to grip the two sets of gripping devices on both sides in the longitudinal direction of the strip.
- At least one of the two sets of gripping devices has a tension measuring device, and the pressing amount of at least one pressing device that presses the front or back surface of the strip is set so that the tension of the strip measured by the tension measuring device becomes the set tension.
- At least two pressing devices are disposed on the entry / exit side with respect to the center between the two sets of gripping devices, and the pressing devices disposed on the exit side are calculated to have a desired warpage shape
- the control is performed to control the pressing amount from the gripping height of the gripping device, and the pressing device disposed on the entry side controls the pressing amount so that the tension measuring device has a desired strip tension, thereby completing the inspection.
- the amount of warpage of the tip in the strip traveling direction can be adjusted by the exit side pressing device for the purpose of subsequent sheeting stability, the reliability of the sheeting is improved, work efficiency is improved, and desired during inspection Since the strip tension of the belt can be set with high accuracy, the risk of strip breakage during the honing inspection is reduced and the safety is improved.
- the strip is gripped when the strip is gripped by applying tension to the strip before each gripping side of the strip set in the gripping height of the two sets of gripping devices by the grip device.
- the strip length between the devices can be minimized, the fluctuation of the strip can be suppressed when rotating the two sets of gripping devices, and the stable rotation can be performed, thereby improving the safety.
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Abstract
Description
圧延後のストリップ表裏面に、該疵または模様が転写された場合、圧延作業後の各種工程において、取り除くことができず、製品歩留まりを低下させる要因となる。
欠陥の発生ピッチから作業ロールに疵が発生している冷間タンデム圧延機の該当スタンドを特定するために、圧延後のストリップを数mから15m程度切り出し、表裏面を光学的に検査する。
更に、高精度に張力を設定することができ、ストリップ表裏面検査時の設定張力に対する張力変動を最小化することで、ストリップ破断のリスクを低減し、安全性ならびに信頼性の高いストリップ表裏面の検査装置を提供することである。
更に、高精度に張力を設定することができ、ストリップ表裏面検査時の設定張力に対する張力変動を最小化することで、ストリップ破断のリスクを低減し、安全性ならびに信頼性の高いストリップ表裏面の検査装置を提供することができる。
更に、ストリップ幅方向の反りの修正及び該把持装置で把持した際に発生するシワを抑制するストリップ表裏面の検査装置を提供することができる。
圧延機で圧延されたストリップ表裏面の検査装置において、ストリップ長手方向の両側をそれぞれ把持する2組の把持装置と前記2組の把持装置間の任意の位置でストリップの表面あるいは裏面を押圧することで、ストリップ幅方向の反りの修正及び該把持装置で把持した際に発生するシワを抑制することができる。
更には、任意の角度において、ホーニング作業及び光学的検査を行なうことで、ストリップ表裏面の有害な疵または模様を判別しやすくなる。
図1は、本実施の形態に係わる圧延されたストリップの検査装置の概略図である。
上流側スタンド100と入側回転フレーム5との間には、入側回転フレーム5の回転を許容しつつ、入側回転フレーム5の長手方向の移動を阻止するべく、複数の規制ローラ30が介装されている。
入側回転フレーム5の入側面には、図4(A)に示すように、スリット5aに対し、その上方、下方に位置するよう、1組の入側把持装置3a,3bが取り付けられている。
以下の説明においては、上側の入側把持装置3aが可動な構造であり、下側の入側把持装置3bが固定された構造であるものとする。
また、入側回転フレーム5の出側面には、図4(B)に示すように、スリット5aの上方に、入側押圧装置7aが取り付けられている。
入側押圧装置7aは、入側回転フレーム5に対して上下動可能な構造であり、ストリップ1に対して上方から押し付けることにより、ストリップ1に張力を発生させるものである。
下流側スタンド200と出側回転フレーム6との間には、出側回転フレーム6の回転を許容しつつ、入側回転フレーム6の長手方向の移動を阻止するべく、複数の規制ローラ30が介装されている。
出側回転フレーム6の出側面には、スリット6aに対して、その上方、下方に位置するよう、1組の出側把持装置4a,4bが取り付けられている。
以下の説明においては、上側の出側把持装置4aが可動な構造であり、下側の出側把持装置4bが固定された構造であるものとする。
また、出側回転フレーム6の入側面には、スリット6aの上方に、出側押圧装置7bが取り付けられている。出側押圧装置7bは、出側回転フレーム6に対して上下動可能な構造であり、ストリップ1に対して上方から押し付けることにより、ストリップ1に張力を発生させるものである。
更に、図6に示すように、入出側回転フレーム5,6をつなぐセパレータ11には、押圧装置7a,7bと同様な機能を持つ押圧装置7を設けても良い。セパレータ11は入出側回転フレーム5,6の回転時の機械的な同期を取るだけでなく、押圧装置7を取り付けるフレームも兼ねるのである。押圧装置7は、入出側把持装置3a,3b,4a,4b間の任意の位置に配置される。
ストリップ1の後端が、開放してある入側把持装置3a,3b上に到達後、ストリップ1の後端を入側把持装置3a,3bで把持する。その後、ストリップ1の先端を出側把持装置4a,4bで把持する。
このとき、出側把持装置4a,4bでストリップ長手方向先端部を把持する前にストリップ搬送装置8を入出側把持装置3a,3b,4a,4bの把持高さ2に上昇させておくことで、ストリップ1のたるみ量を最小化することができ、該2組の入出側把持装置3a,3b,4a,4bの回転時のストリップたわみ量を低減することで、ストリップ1の回転時のストリップのゆらぎ量を低減することで、安全性を向上させることができる。
図1は、該2組の入出側把持装置3a,3b,4a,4bでストリップ1の把持が完了した時点を示した概略図である。
ストリップ搬送装置8の下降完了後、ストリップ1に生成させる張力が所望の張力となるように、入出側押圧装置7a,7bでストリップ1を押圧し、ストリップ1に張力を生成させる。
ストリップ1に生成させる張力が所望の張力となり、入出側押圧装置7a,7bでの押圧作業が完了した後、ストリップ1の第1検査面にホーニング作業を施し、光学的検査を行なう。
ストリップ表面を押圧する入出側押圧装置7a,7bは、ストリップ表面との接触部をローラ構造とし、ストリップ表面への疵付きを防止しても良い。
ストリップ1に幅方向の反りまたは該入出側把持装置3a,3b,4a,4bの把持部を起点としたシワが発生している場合には、ストリップ1に所望の張力を付与することで、幅反りの修正及びシワが抑制でき、ストリップ1の検査面の光学的検査に支障をきたすことが無い。
図2は、ストリップ搬送装置8を下降位置まで下降させ、ストリップ1に生成させる張力が所望の張力となるように、入出側押圧装置7a,7bでストリップ1を押圧した状態を示す概略図である。
また、検査面を任意の角度に傾けることで、ストリップ表裏面の有害な疵または模様が検知しやすくなる。
図3は、入出側押圧装置7a,7bでストリップ1に生成させた所望の張力を維持した状態で、該把持装置3a,3b,4a,4bのストリップ幅方向把持中心位置乃至は該近傍を軸芯として、電気的に同期を取った入出側回転フレーム5,6を180度回転させた状態を示す概略図である。
また、ストリップ幅方向の反りの修正及び該把持装置3a,3b,4a,4bで把持した際に発生するシワを抑制することができるため、ストリップ1の検査面の光学的検査が容易になる。
前述した効果に加え、ストリップ搬送装置8を概ね入出側把持装置3a,3b,4a,4bの把持高さ2に上昇させ、該2組の入出側把持装置3a,3b,4a,4b間のストリップ1の長さを最小化させることで、ストリップ1のたるみ量を最小化することができ、該2組の入出側把持装置3a,3b,4a,4bの回転時のストリップ1のたわみ量を低減することで、ストリップ1回転時の安全性を向上させることができる。
更には、押圧装置7,7a,7bを入出側把持装置3a,3b,4a,4bの把持高さ2の上側、即ち、ストリップ搬送装置8の配置と反対側に配置することで、ストリップ搬送装置8と押圧装置7,7a,7bの干渉がないため、該2組の入出側把持装置3a,3b,4a,4b間に設置するストリップ搬送装置8は十分な長さを確保できるので、通板安定性を向上させることができ、作業効率が向上する。
図5は、2組の把持装置を離隔させることでストリップに張力を付与する従来方式(特許文献2)と、本発明の2組の把持装置間の任意の位置で少なくとも1つの押圧装置でストリップ表面を押圧することでストリップに張力を付与する本発明の方式とを、ストリップのひずみにより発生する応力σ(ストリップに掛かる単位張力)で比較したものである。
違いを明確化するため、自重による張力を除外し、2組の把持装置の離隔によるストリップの伸びと押圧装置での押圧によるストリップの伸びから、それぞれに作用する応力すなわち単位張力を算出し、比較した。
比較に使用した応力σ(ストリップに掛かる単位張力)の式は、σ=(ΔL/L)×Eである。ここで、Eは縦弾性係数、ΔLはストリップ伸び量、Lはストリップ把持装置間距離を示す。ストリップ伸び量ΔLの算出は、2組の把持装置を離隔する従来方式の場合には、2組の把持装置の離隔量から算出し、押圧装置でストリップ表面を押圧する本発明の場合には、押圧量から算出した。
圧延されたストリップ表裏面の検査時のストリップ張力は、単位張力で、10N/mm2から50N/mm2程度の範囲であり、ストリップの厚みに応じて張力値を設定する。
従来の2組の把持装置を離隔させることでストリップに張力を付与する方式では、例えば、10mの把持装置間距離を0.5mm離隔させると約10N/mm2の応力(単位張力)が発生する。すなわち10N/mm2から50N/mm2程度の範囲に設定しようとすると、把持装置間離隔量0.5mmから2.5mm程度の非常に狭い設定範囲となる。したがって、2組の把持装置を離隔させる方式の把持位置決め精度は0.1mm程度、すなわち単位張力変動量としては、約2N/mm2程度としなければならない。
把持装置間距離が10mあり、且つ離隔機能及び回転機能を有する二重構造物で0.1mmの精度を維持するためには、高精度部品を多用し、更には剛性を高くしなければならない。また、経年変化により機械系にガタが生じると、設定張力を確保することが困難となり、ストリップがたるみ、たるみを修正するため手動で把持装置を離隔させた場合、ホーニング検査時に過大な張力設定となって、ストリップ破断のリスクが高まり安全性に課題がある。
また、図1~図3では、セパレータ11が不要であるため、ストリップ目視検査の作業性が向上すると共に、設備重量ならびに設備費を低減することができる。
また支点間距離が約半分となり、ストリップ幅方向の反りの修正効果も向上することができる。
ここで、ストリップ表裏面の検査時に設定するストリップ張力は、前述した如く、単位張力で、10N/mm2から50N/mm2程度の範囲であり、ストリップの厚み、板幅に応じて張力値を設定する。
まず、ストリップ1長手方向の両側を入側把持装置3a,3b、出側把持装置4a,4bでそれぞれ把持し、ストリップ搬送装置8の下降が完了した時点で(ステップS1)、該押圧装置7a、7bを入出側把持装置3a,3b,4a,4bの把持高さ2へと下降させ(ステップS2)、入出側把持装置3a,3b,4a,4bを把持高さ2に設定完了(即ち、入出側把持装置3a,3b,4a,4bを昇降させることによりストリップ1を把持した)後(ステップS3)、押圧力制御に基づき張力測定装置12で張力を検出するまで該押圧装置7a、7bを下降させてストリップ1を押圧する(ステップS4)。張力を検出した後(ステップS5)、該押圧装置7a、7bは、所望のストリップ張力設定値を保持するように押圧量を制御し(ステップS7,S8)、ストリップ表裏面検査が完了するまで(ステップS10)、押圧力制御下で作動させる(ステップS6)。
該押圧装置7a,7bが、入出側把持装置3a,3b,4a,4bの把持高さ2位置に設定した後の押圧量制御のプロセスにおいて、該張力測定装置12で測定したストリップ張力測定値は、絶えず押圧量制御装置13にフィードバックさせ、押圧量を制御しているので、高精度に張力を設定することができ、ストリップ表裏面検査時の設定張力に対する張力変動を最小化することで、目視検査時の張力設定条件を一定とすることができるため、信頼性の高いストリップ表裏面の検査装置を提供することができる。
また、一定の張力値に保持することで、ストリップ破断のリスクを低減でき、安全性を向上させることができる。
図9は、出側押圧装置7bを出側回転フレーム6に、入側押圧装置7aをセパレータ11にそれぞれ取り付けた場合の概略図を示す。
図10は、出側押圧装置7bで所望の板反り形状(ストリップ先端部が僅かに上向きに湾曲している形状)を付与し、入側押圧装置7aで所望の張力を付与している状態を示す概略図である。
所望の板反り形状を付与するための出側押圧装置7bの押圧量は、出側押圧装置7bと出側把持装置4a,4b間の距離、ストリップ1の機械的性質、板厚、板幅などに基づき演算し、決定される。
図11は、ストリップ1先端に所望の板反り形状を付与している状態を示す概略図である。
図13は、ストリップ1の払い出し開始直前の状態を示す概略図である。
なお、出側把持装置4a,4bを開放する前に、出側押圧装置7bを上方の待機位置まで退避させ、その後、ストリップ搬送装置8を把持高さ2まで上昇させると、ストリップ1の先端部の反り形状が曲げ戻されるので、そのような事態は回避する必要がある。
また、張力生成装置14の配置箇所は、出側把持装置4a,4bの出側でも良いし、入出側に各々1台配置しても良い。
まず、圧延されたストリップ1は、ストリップ表裏面の光学的検査を行なうために、図示していない冷間圧延機出側のシャーによって、必要十分な数mから約15m程度までの長さに分割され、入側搬送テーブル9上を搬送され、開放してある張力生成装置14及び入側把持装置3a,3bを通り、ストリップ1の先端が把持高さ2に上昇させたストリップ搬送装置8を通過し、開放してある出側把持装置4a,4b上に到達するまで搬送される。ストリップ1の先端が、開放してある出側把持装置4a,4b上に到達後、ストリップ1の先端を出側把持装置4a,4bで把持する。その後、入側把持装置3a,3bの入側に配置した張力生成装置14において、ストリップ1に張力を付与し、張力を付与した状態で、入側把持装置3a,3bでストリップ1の後端部を把持し、ストリップ搬送装置8を下降させ、入出側押圧装置7a,7bで押圧することで、ストリップ1を押圧する前のたわみ量を最小化でき、該2組の入出側把持装置3a,3b,4a,4bが回転する際にストリップの揺らぎを抑制することができ、任意の回転角度の目視検査が可能となる。
Claims (17)
- 圧延機で圧延されたストリップ表裏面の検査装置において、ストリップ長手方向の両側をそれぞれ把持する2組の把持装置と、前記2組の把持装置間の任意の位置でストリップの表面あるいは裏面を押圧する少なくとも2つの押圧装置とを有することを特徴とするストリップ表裏面の検査装置。
- 請求項1に記載の検査装置において、前記2組の把持装置は、把持したストリップを該把持装置のストリップ幅方向把持中心位置乃至は該近傍を軸芯として、任意の角度に回転する構造とし、前記少なくとも2つの押圧装置は、該2組の把持装置間の任意の位置で、該把持装置により任意の角度に回転したストリップの表面あるいは裏面を押圧する構造としたことを特徴とするストリップ表裏面の検査装置。
- 圧延機で圧延されたストリップ表裏面の検査装置において、ストリップの長手方向の両側をそれぞれ把持し、ストリップ幅方向把持中心位置乃至は該近傍を軸芯として、任意の角度に回転する構造とした2組の把持装置と、前記2組の把持装置間の任意の位置で、該把持装置により任意の角度に回転したストリップの表面あるいは裏面を押圧する少なくとも1つの押圧装置を有することを特徴とするストリップ表裏面の検査装置。
- 請求項2乃至請求項3の何れか1項に記載の検査装置において、前記把持装置と前記押圧装置は、該把持装置で把持したストリップを該把持装置のストリップ幅方向把持中心位置乃至は該近傍を軸芯として、任意の角度に回転する回転フレームに取り付けられたことを特徴とするストリップ表裏面の検査装置。
- 請求項1乃至請求項4の何れか1項に記載の検査装置において、前記2組の把持装置間に、該把持装置で把持される高さにおいてストリップを長手方向に搬送するストリップ搬送装置を配置することを特徴とするストリップ表裏面の検査装置。
- 請求項5に記載の検査装置において、前記ストリップ搬送装置は、昇降可能な構造としたことを特徴とするストリップ表裏面の検査装置。
- 請求項1乃至請求項6の何れか1項に記載の検査装置において、前記2組の把持装置は少なくとも一方に張力測定装置を有し、該張力測定装置で測定されるストリップ張力が設定張力となるように、前記押圧装置の押圧量を制御する制御装置を有することを特徴とするストリップ表裏面の検査装置。
- 請求項1乃至請求項7の何れか1項に記載の検査装置において、前記2組の把持装置間からストリップが搬送される出側に配置される前記押圧装置は、ストリップ先端部に対して所望の反り形状を付与することを特徴とするストリップ表裏面の検査装置。
- 請求項1乃至請求項8の何れか1項に記載の検査装置において、前記2組の把持装置でストリップ長手方向の両側をそれぞれ把持されるストリップに張力を付与する張力生成装置を有することを特徴とするストリップ表裏面の検査装置。
- 圧延機で圧延されたストリップ表裏面の検査方法において、ストリップ長手方向の両側を2組の把持装置でそれぞれ把持した状態で、少なくとも2つの押圧装置で該把持装置間の任意の位置でストリップの表面あるいは裏面を押圧し、ストリップ表面あるいは裏面を検査することを特徴とするストリップ表裏面の検査方法。
- 請求項10に記載の検査方法において、前記2組の把持装置で把持したストリップを、ストリップ幅方向把持中心位置乃至は該近傍を軸芯として、任意の角度に回転させ、少なくとも2つの押圧装置で、前記把持装置により任意の角度に回転したストリップの表面あるいは裏面を押圧し、任意の角度でストリップ表面あるいは裏面を検査することを特徴とするストリップ表裏面の検査方法。
- 圧延機で圧延されたストリップ表裏面の検査方法において、ストリップ長手方向の両側を把持する2組の把持装置でそれぞれ把持した状態で、少なくとも1つの押圧装置で該2組の把持装置間の任意の位置のストリップ表面あるいは裏面を押圧し、該2組の把持装置で把持した該把持装置のストリップ幅方向把持中心位置乃至は該近傍を軸芯として、任意の角度に回転させ、ストリップの表面あるいは裏面を検査することを特徴とするストリップ表裏面の検査方法。
- 請求項10乃至請求項12の何れか1項に記載の検査方法において、前記2組の把持装置間に配置したストリップ搬送装置により、該把持装置で把持される高さにおいてストリップを長手方向に搬送することを特徴とするストリップ表裏面の検査方法。
- 請求項13に記載の検査方法において、前記2組の把持装置及びストリップが回転する際に、該回転半径外に前記ストリップ搬送装置を昇降して退避させることを特徴とするストリップ表裏面の検査方法。
- 請求項10乃至請求項14の何れか1項に記載の検査方法において、前記2組の把持装置の少なくとも一方に備えられた張力測定装置により測定されたストリップ張力が設定張力となるように、前記押圧装置の押圧量を制御することを特徴とするストリップ表裏面の検査方法。
- 請求項10乃至請求項15の何れか1項に記載の検査方法において、前記2組の把持装置間からストリップが搬送される出側に配置される前記押圧装置によりストリップ先端部に対して所望の反り形状を付与することを特徴とするストリップ表裏面の検査方法。
- 請求項10乃至請求項16の何れか1項に記載の検査方法において、前記2組の把持装置でストリップ長手方向の両側をそれぞれ把持する前のストリップに張力を付与することを特徴とするストリップ表裏面の検査方法。
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US12/740,665 US8613225B2 (en) | 2008-10-17 | 2008-10-17 | Device for inspecting front and back surfaces of a strip material and method thereof |
CN200880114362.6A CN102123802B (zh) | 2008-10-17 | 2008-10-17 | 用于检查条带状材料的前表面和后表面的装置及其方法 |
PCT/JP2008/068840 WO2010044165A1 (ja) | 2008-10-17 | 2008-10-17 | ストリップ表裏面の検査装置及び検査方法 |
EP08877423.7A EP2335839B2 (en) | 2008-10-17 | 2008-10-17 | Equipment and method for inspecting front and back sides of strip |
BRPI0818748-7A BRPI0818748A2 (pt) | 2008-10-17 | 2008-10-17 | Dispositivo e método de inspeção para inspecionar uma superfície dianteira e uma superfície traseira de um material em tira laminado por uma máquina de laminação |
JP2009546589A JP5028496B2 (ja) | 2008-10-17 | 2008-10-17 | ストリップ表裏面の検査装置及び検査方法 |
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JPS59113916A (ja) * | 1982-12-21 | 1984-06-30 | Kawasaki Steel Corp | シ−ト反転装置 |
WO2004069441A1 (de) | 2003-02-05 | 2004-08-19 | Sms Demag Aktiengesellschaft | Inspektionssystem für walzprodukte einer walzanlage |
WO2006051239A1 (fr) | 2004-11-10 | 2006-05-18 | Siemens Vai Metals Technologies Sas | Procede et dispositif d'inspection d'une bande laminee |
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US2023904A (en) * | 1932-06-06 | 1935-12-10 | Schulte Grinding And Polishing | Process of finishing metallic sheets |
US3461718A (en) * | 1967-01-05 | 1969-08-19 | Du Pont | Thread tensioning apparatus |
JP3555751B2 (ja) * | 1999-11-26 | 2004-08-18 | 本田技研工業株式会社 | 圧延装置 |
CN100370243C (zh) * | 2001-09-21 | 2008-02-20 | 奥林巴斯株式会社 | 缺陷检查装置 |
FR2888763B1 (fr) * | 2005-07-22 | 2008-10-03 | Vai Clecim Sa | Procede d'inspection et installation associee |
KR100776288B1 (ko) * | 2007-07-16 | 2007-11-13 | (주)삼우기계 | 냉연강판용 턴 오버장치 |
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JPS59113916A (ja) * | 1982-12-21 | 1984-06-30 | Kawasaki Steel Corp | シ−ト反転装置 |
WO2004069441A1 (de) | 2003-02-05 | 2004-08-19 | Sms Demag Aktiengesellschaft | Inspektionssystem für walzprodukte einer walzanlage |
JP2006516484A (ja) | 2003-02-05 | 2006-07-06 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | 圧延設備の圧延製品のための検査システム |
WO2006051239A1 (fr) | 2004-11-10 | 2006-05-18 | Siemens Vai Metals Technologies Sas | Procede et dispositif d'inspection d'une bande laminee |
JP2008519693A (ja) | 2004-11-10 | 2008-06-12 | シーメンス ヴェ メタルス テクノロジーズ エスアーエス | 圧延ストリップの検査の方法及び装置 |
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EP2335839B2 (en) | 2020-07-01 |
BRPI0818748A2 (pt) | 2015-06-16 |
EP2335839A4 (en) | 2016-06-01 |
EP2335839A1 (en) | 2011-06-22 |
CN102123802B (zh) | 2014-01-01 |
JP5028496B2 (ja) | 2012-09-19 |
JPWO2010044165A1 (ja) | 2012-03-08 |
CN102123802A (zh) | 2011-07-13 |
US20100257939A1 (en) | 2010-10-14 |
US8613225B2 (en) | 2013-12-24 |
EP2335839B1 (en) | 2017-03-01 |
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