JP2010085267A - Apparatus for measuring roller form, and clearance adjustment method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus capable of measuring a roller form with a roller surface coated with a curing film and to enable quick clearance adjustment without damaging the roller surface by off-line dummy clearance adjustment, using the apparatus. <P>SOLUTION: A roller form measurement apparatus 40 capable of measuring a form of a cooling roller 14 having a diameter of 1 m or more and with the roller surface coated with the resin curing film 30 includes: an eddy current type displacement gauge 42 for measuring a distance to the roller surface by reacting only to metals; move means 46 for slidably supporting the displacement gauge 42 to a slide bar 44 and moving the displacement gauge in the width direction of the cooling roller 14; and correction means for having calibration curve data containing previously obtained relationship between a measured value with the displacement gauge 42 and an actual measured distance to the roller surface and correcting the measured value with the displacement gauge 42 based on the calibration curve data. A clearance between the cooling roller 14 and a wind shielding plate 22 is adjusted off-line based on results of the roller form measured on-line by the roller form measurement apparatus 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roller shape measuring apparatus and a clearance adjusting method using the same, and in particular, a mirror-processed metal roller (including a drum) like a film forming apparatus for producing a functional film base film. The present invention relates to a roller shape measuring apparatus and a clearance adjustment technique used when a proximity member such as a windshield plate is disposed on a roller surface with a predetermined clearance.

  Base films for producing functional films (for example, optical compensation films, antireflection films, etc.) used for liquid crystal displays, etc., are manufactured by a solution film forming method or a melt film forming method, and have a good surface shape. It is required to be a film.

  When a base film is formed by a solution casting method or a melt casting method, a resin is cast in a thin film from a die onto a cooling roller surface, and the cooled thin film resin is peeled from the roller. The roller used in the film forming apparatus has a mirror finish on the roller surface.

  In addition, in the film forming apparatus, on the upstream side of the casting die, the casting film cast on the roller surface from the casting die does not deteriorate the film surface shape by shaking with the accompanying air accompanying the roller rotation. There is a case where a wind shielding plate is arranged to be supported by the device frame. In order to increase the wind shielding effect of this wind shield plate, it is necessary to arrange the wind shield plate so that the clearance between the wind shield plate and the roller surface is close to each other.

  In this case, the clearance adjustment is performed by covering the roller surface with a resin curing film made of a certain thickness so that the roller surface is not damaged, and the clearance between the wind shield and the curing film on the roller surface. Clearance adjustment is performed by inserting a gauge plate between them and extending the expansion / contraction part of the wind shielding plate in this state to approach the roller surface. However, when adjusting the clearance, the windshield plate may hit the curing film surface and damage the roller surface, or the tool used when extending the windshield plate may be strongly applied to the curing film surface and damage the roller surface. In some cases, the mirror surface of the roller surface must be redone. Furthermore, since there is a concern about the adhesion of dust etc. to the gap between the roller surface and the wind shield plate, periodic cleaning is required, and the wind shield plate is frequently detached, and this clearance adjustment is required each time. is necessary. The clearance adjustment work not only burdens the operator, but also requires a covering and peeling work for the curing film, which takes a long time. In particular, in recent years, since a wide base film is manufactured, the time required for the adjustment work is getting longer and longer.

  In addition, the proximity member that requires high-precision clearance adjustment because it is disposed close to the roller surface is not limited to the above-described wind shielding plate, but includes, for example, a casting die, a decompression chamber, a coating die, a jet nozzle, and the like. The clearance between the member and the roller surface greatly affects the processing performance.

  From such a background, there is a demand for a method that allows the operator to adjust the clearance without directly working on the roller surface. With this method, the roller surface is not damaged and the burden on the operator is also reduced. Not only can it be reduced, but the work of covering and peeling the curing film in the clearance adjustment is not required, and the adjustment time can be greatly shortened.

  However, in order to eliminate the clearance adjustment work by the worker on the roller surface, it is necessary to grasp the shape of the roller surface (profile) in advance. This is necessary only when the roller is removed when it is remodeled. In this case, the roller is covered with a curing film. For this purpose, the shape of the roller surface must be measured from above the curing film. However, in this case, the thickness of the curing film varies and the influence of the covering state (floating, wrinkles, etc.), etc., makes it impossible to measure accurately.

There was also no suitable roller shape measuring device for measurement. For example, Patent Document 1 discloses a profile measuring apparatus for a rolling roller, but it measures the distance to the roller surface with an ultrasonic sensor and cannot be used if the roller film is covered with a curing film. .
JP-A-63-195512

  Thus, the actual situation is that a method for adjusting the clearance without peeling the curing film from the roller surface has not been realized, and a roller shape measuring apparatus for that purpose has not been developed.

  The present invention has been made in view of such circumstances, and provides a measuring device capable of measuring a roller shape with a roller film covered with a curing film, and using the measuring device to adjust clearance by a dummy offline. It is an object of the present invention to provide a clearance adjustment method that can quickly adjust the clearance without damaging the roller surface.

  In order to achieve the above object, Claim 1 of the present invention is a roller shape measuring apparatus for measuring the shape of a metal roller with a resin curing film covered on the roller surface of the metal roller having a diameter of 1 m or more. An eddy current displacement meter that measures the distance to the roller surface by reacting only with metal, and the eddy current displacement meter is slidably supported on a slide bar and moved in the width direction of the metal roller. And calibration curve data obtained in advance for the relationship between the measured value of the moving means and the measured value with the eddy current displacement meter and the actual distance to the roller surface, and the measured value measured with the eddy current displacement meter is the calibration value. There is provided a roller shape measuring apparatus comprising a correcting means for correcting based on line data.

  According to the roller shape measuring apparatus of claim 1, since the roller shape of the metal roller is measured while moving the eddy current displacement meter in the roller width direction by the moving means, the resin curing film on the roller surface The shape of the roller can be measured even if it is still covered.

  In addition, the eddy current displacement meter using eddy current is less accurate than other displacement meters using laser, ultrasonic waves, etc., but in the present invention, the diameter of the metal roller to be measured is 1 m or more. In addition, the measurement value measured with the eddy current displacement meter was corrected based on the calibration curve data obtained in advance for the relationship between the measured value with the eddy current displacement meter and the actual distance to the roller surface. Measurement accuracy can be improved. In this case, the actually measured distance is a distance obtained by directly measuring the distance to the roller surface. For example, a block gauge or a contact sensor can be used.

  For example, as an example of the application of the roller shape measuring apparatus of the present invention, there is an application of adjusting a clearance between a roller surface and a proximity member such as a wind shield while the roller surface is covered with a resin curing film. . In this case, measurement accuracy of 10 μm or less is required, but it can be sufficiently cleared.

  According to a further aspect of the roller shape measuring device of the present invention, the roller shape measuring device further comprises a deflection measuring means for measuring the deflection of the slide bar, and the measurement data measured by the deflection measuring means is corrected. It is preferable to take into account the correction of the means. Thereby, since the bending of the slide bar is canceled from the measured value, the measurement accuracy can be further improved. As the deflection measuring means, for example, a level, a collimator, a strain gauge attached to the apparatus frame, or the like can be suitably used.

  Moreover, according to the further aspect of the roller shape measuring apparatus of this invention, it is preferable that the said roller shape measuring apparatus was equipped with the angle adjustment means which adjusts the attachment angle of the said eddy current type displacement meter with respect to the said roller surface. For a measurement object having a curvature on the roller surface, such as a metal roller, it is important to arrange the mounting angle of the eddy current displacement meter perpendicular to the roller surface. In the present invention, an angle adjusting means is provided. Therefore, the mounting angle can be set optimally. Thereby, the measurement accuracy can be further improved.

  According to a further aspect of the roller shape measuring apparatus of the present invention, the roller shape measuring apparatus is configured such that the measuring head that slides the slide bar and holds the eddy current displacement meter is made of a material other than metal. It is preferable. In the eddy current displacement meter, when a metal is used for the measurement head, the measurement accuracy is adversely affected. However, in the present invention, since the measurement head is made of a material other than metal, the measurement accuracy can be further improved.

  According to a fifth aspect of the present invention, in order to achieve the above object, a metal roller having a mirror surface processed with a mirror surface and having a diameter of 1 m or more, and a proximity member which is disposed close to the roller surface and has an expansion / contraction portion are supported by the apparatus frame In the method for adjusting the clearance between the roller surface and the proximity member, the roller shape measuring device according to any one of claims 1 to 4 is attached to an attachment position of the proximity member in the device frame. A first step of measuring the shape in the width direction of the metal roller on-line with the curing surface coated on the roller surface, and a real model in which the dummy roller of the metal roller is provided on the dummy frame of the apparatus frame Attach the roller shape measuring device used in the online measurement to the attachment position of the proximity member in the real model device using the device A second step of measuring the shape in the width direction of the dummy roller off-line, and a third step of detecting an error of the roller shape measurement value in the off-line measurement with respect to the roller shape measurement value in the on-line measurement; The roller shape measuring device is removed from the real model device and the proximity member is attached, and the clearance with the dummy roller is adjusted to a set value by expanding and contracting the expansion and contraction portion of the proximity member in consideration of the detected error. And a fifth step of removing the proximity member adjusted to the set value from the real model device and attaching the proximity member to the device frame on-line, and is covered with the metal roller The curing film is peeled off at any time from after the first step to after the fifth step. To provide an integer method.

  According to the clearance adjustment method of the present invention, on-line, a curing film is coated on a roller surface, and the shape of the metal roller in the width direction (profile) is measured by an eddy current displacement meter, and the proximity to the roller surface is measured. The clearance of the member was adjusted off-line using a real model device. Then, the proximity member is mounted on-line without covering the mirror roller with the curing film. As a result, the clearance can be adjusted quickly without damaging the roller surface. The curing film coated on the metal roller may be peeled off at any time after the first step to after the fifth step. The expansion / contraction of the expansion / contraction part may be manual or automatic.

  According to the roller shape measuring device of the present invention, the roller shape can be measured while the roller surface is covered with the curing film. Therefore, by performing the clearance adjustment with the dummy offline using the roller shape measuring apparatus of the present invention, the clearance adjustment can be quickly performed without damaging the roller surface.

  Accordingly, it is possible to reduce the burden on the operator who performs the clearance adjustment, and it is not necessary to cover the curing film for the clearance adjustment and to peel off after the adjustment, so that the adjustment time can be greatly shortened. Furthermore, since the clearance can be adjusted off-line, it is possible to reduce the time for stopping the on-run operation, thereby improving the operation efficiency and ensuring the safety of the operator.

  Hereinafter, preferred embodiments of a roller shape measuring device and a clearance adjusting method using the same according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a film forming apparatus 10 in a solution film forming method or a melt film forming method as an example of an apparatus for carrying out the clearance adjustment method of the present invention.

  As shown in FIG. 1, a thermoplastic resin (for example, cellulose resin) is cast from a die 12 onto a metal cooling roller (also referred to as a cooling drum) 14 to be cooled, and is peeled off by a peeling roller 16. Thus, the film 18 is formed. In the solution casting method, thereafter, the solvent is removed by a drying device or the like. In forming the film 18, a wind shielding plate 22 is provided on the upstream side of the die 12 so as to be close to the roller surface so that the resin film 20 discharged from the die 12 is not shaken by the accompanying air accompanying the rotation of the cooling roller 14. Provided.

  As shown in FIG. 2, the cooling roller 14 is rotatably supported by bearings 28, 28 on the left and right support columns 26, 26 of the device frame 24 formed in a portal shape, and is illustrated by a rotation driving unit (not shown). 1 in the direction of the arrow. The cooling roller 14 is a large-diameter roller having a diameter of 1 m or more (usually 1 m to 4 m) and a width of 1 m or more (usually 1 m to 4 m). Further, the cooling roller 14 is mirror-finished on the roller surface, and is coated with a transparent resin curing film 30 so that the roller surface is not damaged until the film forming apparatus 10 is operated. (See FIG. 3).

  Further, support portions 32 and 32 protrude from the upper portions of the left and right support columns 26 and 26 in the horizontal direction, respectively, and a pin 34 is erected on the upper surface of the support portion 32. On the other hand, L-shaped arms 36, 36 are formed on the left and right upper portions of the wind shield plate 22, and holes 38, 38 are formed in the horizontal portion corresponding to the pins 34. The wind shield plate 22 is detachably supported by the apparatus frame 24 by fitting the hole 38 to the pin 34. The lower end of the wind shield plate 22 is provided with an expansion / contraction portion 22A for adjusting the clearance with the roller surface of the cooling roller 14 by expanding and contracting at the time of clearance adjustment. The stretchable part 22A is formed of a resin sheet such as a silicone plate, and is formed in a nested structure with respect to the main body part 22B of the windshield plate 22. The clearance is adjusted so that the clearance (gap) with respect to the roller surface of the cooling roller 14 becomes a set value C (for example, 5 mm) by adjusting the amount of protrusion that causes the expansion / contraction part 22A to protrude from the main body part 22B.

  Conventionally, this clearance adjustment work has problems such as damaging the roller surface and spending a long time on adjustment work such as covering and peeling of the curing film 30. Therefore, in the present invention, the clearance adjustment described below is performed, so that damage to the roller surface can be avoided and the clearance adjustment can be performed in a short time.

  Hereinafter, the work process of the clearance adjustment method of the present invention will be described. In the description, the roller shape measuring device 40 of the present invention will also be described.

[First step]
First, as shown in FIG. 3, the eddy current displacement meter 42 of the roller shape measuring device 40 of the present invention is attached to the support portion 32 of the device frame 24 to which the windshield plate 22 is not yet attached, and the displacement meter 42 is attached. By sliding in the width direction of the cooling roller 14, the shape in the width direction of the cooling roller is measured on-line while the curing film 30 is covered on the roller surface. After this measurement, the curing film 30 is peeled off. In addition, in this Embodiment, although the curing film 30 was peeled after the measurement, what is necessary is just to peel at any time from after the 1st process to after the 5th process mentioned later.

  The roller shape measuring device 40 mainly includes an eddy current type displacement meter 42 (hereinafter simply referred to as a displacement meter 42) that measures the distance to the roller surface by reacting only with metal, and the displacement meter 42 is slid onto a slide bar 44. A moving unit 46 that freely supports and moves in the width direction of the cooling roller 14 and a correcting unit 48 that corrects a measurement value by the displacement meter 42 are configured. In addition, when the film forming apparatus 10 uses the roller shape measuring device 40 in an explosion-proof environment like the solution film forming method, the explosion-proof roller shape measuring device 40 is used.

  The displacement meter 42 generates a high-frequency magnetic field by applying a high-frequency current to the coil. When a metallic cooling roller 14 is present in the magnetic field, the displacement gauge 42 is perpendicular to the passage of magnetic flux on the roller surface of the cooling roller 14 by electromagnetic induction. Eddy current flows, and the impedance of the coil changes. The distance to the roller surface is measured by converting this impedance change into a distance. The measured distance is sent to the computer 50 for recording and necessary calculations, and is corrected by the correction means 48 built in the computer 50. The correction means 48 has calibration curve data obtained in advance for the relationship between the measured value of the displacement meter 42 and the actual distance to the roller surface, and corrects the measured value measured by the displacement meter 42 based on the calibration curve data. To do. As can be seen from FIG. 4, the relationship between the measured value and the actually measured distance is a substantially straight line, but a calibration curve is formed by a high-order curve for improving accuracy, and the measured value measured by the displacement meter 42 is used as the calibration curve. By correcting based on the data, the displacement meter 42 can be corrected to an accurate distance and used as a distance meter for measuring an absolute distance.

  As shown in FIGS. 3 and 5, the moving means 46 mainly includes a slide bar 44 that bridges a pair of support portions of the apparatus frame 24, a slide bar 44 that is slidably supported, and a displacement meter 42. The measurement head 52 is held, an LM (linear motion) guide 54 that slidably supports the measurement head 52 on the slide bar 44, and a drive unit (not shown) that slides the measurement head 52. The drive unit may be built in the measurement head 52 so as to be self-propelled. In FIG. 5, in order to show that the displacement meter 42 measures the distance to the metal roller surface without being affected by the curing film 30, the thickness of the curing film 30 is drawn much thicker than the actual thickness. .

  At both ends of the slide bar 44, holes 56 corresponding to the pins 34 erected on the support portion 32 of the apparatus frame 24 are formed. By fitting the holes 56 into the pins 34, the slide bar 44 is paired with the pair of pins 34. It is bridged between the posts 26. As a result, by moving the displacement meter 42 in the width direction of the cooling roller 14, the roller surface shape (profile) in the roller width direction is measured. Normally, there is no problem even if the shape (profile) of the entire roller surface is calculated by calculation from one measurement in the roller width direction. However, as shown in FIG. 6, for example, a plurality of displacement shapes 42, 42,... It is preferable to be able to measure simultaneously. Further, even with one displacement meter 42, when the displacement meter 42 is moved once in the roller width direction, the cooling roller 14 is rotated by a predetermined amount and moved again in the roller width direction. By repeating this operation a plurality of times, the shape (profile) of the entire surface of the cooling roller 14 can be obtained.

  The roller shape measuring device 40 preferably includes a deflection measuring unit (not shown) that measures the deflection of the slide bar 44, and the measurement data measured by the deflection measuring unit is preferably added to the correction of the correcting unit 48. . When the width dimension of the cooling roller 14 becomes long, it is necessary to use a long slide bar 44 corresponding to the width, and in order to increase the measurement accuracy of the displacement meter 42, it is necessary to consider the bending of the slide bar 44.

  FIG. 7 shows the deflection of the slide bar 44 when the displacement gauge 42 held by the measuring head 52 is slid using the 1500 mm long slide bar 44 for measuring the cooling roller 14 having a width of 1500 mm. It was measured as the slope of. An inclination in the cooling roller width direction (inclination relative to the horizontal) was measured using a level as a deflection measuring means. That is, an operation of placing a level on the upper surface (reference surface) of the slide bar 44 at the position where the displacement gauge 42 was slid and measuring the inclination of the reference surface was sequentially performed from one end side to the other end side of the slide bar 44. In FIG. 7, the horizontal axis indicates the position (mm) of the displacement meter 42 in the cooling roller width direction, and the vertical axis indicates the inclination (mm) of the reference surface of the slide bar 44.

  FIG. 8 is an integration of the tilt result of FIG. 7, the horizontal axis indicates the position (mm) of the displacement meter 42 in the cooling roller width direction, and the vertical axis is downward from the horizontal state where the displacement meter is not bent. It shows how many millimeters (down) in the (roller surface direction) deflection. As can be seen from FIG. 8, the displacement meter 42 has a deflection amount of about 2.5 mm at the center position (position 0) in the cooling roller width direction and bends closest to the roller surface.

  FIG. 9 is obtained from the output value of the sensor and the calibration curve, and represents the distance from the tip of the displacement meter 42 to the cooling roller 14. FIG. 10 shows the virtual clearance amount when FIG. 8 is added to FIG. 9, that is, when the amount of deflection of the slide bar 44 is zero.

  The roller shape measuring device 40 preferably includes an angle adjusting means (not shown) for adjusting the mounting angle of the displacement meter 42 with respect to the roller surface. For a measurement object having a curvature on the roller surface like the cooling roller 14, it is important to improve the measurement accuracy that the mounting angle of the displacement meter 42 is arranged perpendicular to the roller surface.

  In the roller shape measuring device 40, the measuring head 52 is preferably formed of a resin material. If a metal is used for the measurement head 52, the measurement accuracy is adversely affected. However, the measurement accuracy can be further improved by using a material other than metal, such as a resin, for the measurement head 52.

[Second step]
Next, as shown in FIG. 11A, a real model apparatus 62 is prepared in which a dummy frame 58 imitating the apparatus frame 24 is provided with a dummy roller 60 imitating the cooling roller 14. The dummy roller 60 is made of the same metal as the cooling roller 14.

  As can be seen from FIG. 11A, the actual device 10 and the actual model device 62 do not have to be completely coincident with each other, and the dummy roller when the displacement gauge 42 and the wind shielding plate 22 are attached to the dummy frame 58. 60 and a distance should just be the same as the distance with the cooling roller 14 when the displacement meter 42 and the windshield 22 are attached to the apparatus frame 24. FIG. Therefore, in the present invention, as shown in FIG. 11B, a dummy roller 60 having a semicircular cross section in which the cooling roller 14 is divided in half in the axial direction is used. Further, the dummy frame 58 is not a gate shape like the device frame 24, but imitates a pair of column portions 58A, a support portion 58B that bridges the slide bar 44, and a pin 58C.

  Then, as shown in FIG. 12, the same roller shape measuring device 40 as used in the on-line measurement is attached to the dummy frame 58 of the actual model device 62, and the shape of the dummy roller 60 in the width direction is measured off-line. The measured distance is sent to the computer 50 for recording and necessary calculations, as well as on-line measurement, and is corrected by the correction means 48.

[Third step]
Next, the error of the dummy roller 60 in the real model device 62 with respect to the cooling roller 14 in the real device 10 is calculated by comparing the roller shape measurement value in the first measurement with the real shape device 10 in the first step. It detects from the difference with the roller shape measurement value in the off-line measurement performed using the real model apparatus 60 in the second step.

  The error detection is automatically calculated by the computer 50 and is shown as an error curve in the roller width direction as shown in FIG.

[Fourth step]
Next, as shown in FIG. 14, the roller shape measuring device 40 is removed from the real model device 62 and the wind shield plate 22 is attached. Then, considering the error detected in the third step, the expansion / contraction part 22A of the wind shielding plate 22 is manually expanded / contracted, and the clearance from the roller surface of the dummy roller 60 is adjusted to the set value C.

[Fifth step]
Next, the wind shield plate 22 with the clearance adjusted to the set value C is removed from the actual model device 62 and attached to the on-line device frame 24 as shown in FIG.

  As a result, the clearance between the wind shield plate 22 and the roller surface of the cooling roller 14 becomes the set value C without adjusting the clearance of the wind shield plate 22 with respect to the roller surface of the cooling roller 14 on-line as in the prior art. .

  As described above, by performing the first to fifth steps, the roller shape (profile) in the width direction of the cooling roller 14 with the eddy current displacement meter 42 with the curing film 30 covered on the roller surface online. The clearance adjustment of the wind shielding plate 22 with respect to the roller surface was performed off-line using the actual model device 62. And by installing the wind shield 22 on-line, the clearance can be adjusted quickly without damaging the roller surface.

  In the fourth step, as a method of manually expanding and contracting the expansion / contraction part 22A of the wind shield plate 22 and adjusting the clearance with the roller surface of the dummy roller 60 to the set value C, for example, as shown in FIG. Can do.

  As shown in FIG. 16, the main body portion 22 </ b> B and the stretchable portion 22 </ b> A of the windshield plate 22 are connected by a plurality of connecting members 23 in the windshield plate width direction. As shown in the enlarged view, in the connecting member 23, a through hole 23B is formed in a horizontal plate 23A of an L-shaped member fixed to the main body portion 22B, and a bolt 23C extending from the upper surface of the extendable portion 22A is inserted. The bolt 23C is supported on the horizontal plate 23A by a pair of nuts 23D and 23D fitted to the bolt 23C. As a result, the distance by which the bolt 23C is pushed and pulled with respect to the horizontal plate 23A is changed by changing the amount of rotation for rotating the nuts 23D and 23D of the plurality of connecting members 23 arranged in the windshield width direction. The elastic part 22A can be bent and deformed. Thereby, the clearance in the expansion / contraction portion width direction can be adjusted to the set value C in accordance with the measured surface shape in the roller width direction.

  In addition, in this Embodiment, although the example of the windshield 22 was demonstrated as a proximity member, it is not limited to this. For example, the present invention can be applied to all members such as a casting die, a decompression chamber, a coating die, a jet nozzle, and the like that require clearance adjustment in order to be disposed close to the roller surface.

The perspective view which showed the melt film forming apparatus as an example of the apparatus which applies the clearance adjustment method of this invention Conceptual diagram showing the relationship between the cooling roller and wind shield of the melt film-forming device Explanatory drawing explaining the 1st process (online roller shape measurement) of the clearance adjustment method of this invention. Explanatory drawing of the calibration curve mounted on the correction means of the roller shape measuring device Explanatory drawing mainly explaining a moving means of a roller shape measuring apparatus The perspective view which shows another aspect of a roller shape measuring apparatus It is a figure explaining deflection correction of a roller shape measuring device, and an explanatory figure explaining inclination of a slide bar It is a figure explaining deflection correction of a roller shape measuring device, and an explanatory figure explaining a fall amount of a displacement meter It is a figure explaining deflection correction of a roller shape measuring device, and an explanatory figure explaining an output value of a displacement meter It is a figure explaining deflection correction of a roller shape measuring device, and an explanatory figure explaining error influence of a clearance amount Explanatory drawing explaining a real model device Explanatory drawing explaining the 2nd process (offline roller shape measurement) of the clearance adjustment method of this invention. Explanatory drawing explaining the 3rd process of the clearance adjustment method of this invention Explanatory drawing explaining the 4th process of the clearance adjustment method of this invention Explanatory drawing explaining the 5th process of the clearance adjustment method of this invention Explanatory drawing explaining the 4th process of the clearance adjustment method of this invention in detail

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Melt film forming apparatus, 12 ... Die, 14 ... Cooling roller, 16 ... Peeling roller, 18 ... Film, 20 ... Resin film, 22 ... Wind shielding plate, 24 ... Device frame, 26 ... Strut, 28 ... Bearing, 30 ... Curing film, 32 ... Supporting part, 34 ... Pin, 36 ... L-shaped arm, 38 ... Hole, 40 ... Roller shape measuring device, 42 ... Displacement meter, 44 ... Slide bar, 46 ... Moving means, 48 ... Correction means 50 ... Computer, 52 ... Measurement head, 54 ... LM guide, 56 ... Hole, 58 ... Dummy frame, 60 ... Dummy roller, 62 ... Real model apparatus,

Claims (5)

A roller shape measuring device for measuring the shape of a metal roller with a resin curing film coated on the roller surface of the metal roller having a diameter of 1 m or more,
An eddy current displacement meter that measures the distance to the roller surface by reacting only with metal;
Moving means for slidably supporting the eddy current displacement meter on a slide bar and moving in the width direction of the metal roller;
It has calibration curve data obtained in advance for the relationship between the measured value with the eddy current displacement meter and the actual distance to the roller surface, and the measured value measured with the eddy current displacement meter is based on the calibration curve data. A roller shape measuring apparatus comprising: a correcting means for correcting The roller shape measuring device is
2. The roller shape measuring apparatus according to claim 1, further comprising a deflection measuring unit for measuring the deflection of the slide bar, wherein the measurement data measured by the deflection measuring unit is added to the correction of the correcting unit. The roller shape measuring device is
3. The roller shape measuring apparatus according to claim 1, further comprising angle adjusting means for adjusting an attachment angle of the eddy current displacement meter with respect to the roller surface. The roller shape measuring device is
The roller shape measuring apparatus according to claim 1, wherein a measuring head that slides the slide bar and holds the eddy current displacement meter is formed of a material other than metal. An apparatus in which a roller surface is mirror-finished and a metal roller having a diameter of 1 m or more, and a proximity member that is disposed close to the roller surface and has a telescopic portion, are supported by an apparatus frame, and the roller surface and the proximity member In the method of adjusting the clearance of
The roller shape measuring device according to any one of claims 1 to 4 is attached to the attachment position of the proximity member in the device frame, and the shape in the width direction of the metal roller is on-line with the roller surface covered with the curing film. A first step of measuring;
Using a real model device in which the dummy roller of the metal roller is provided on the dummy frame of the device frame, the roller shape measuring device used in the online measurement is attached to the mounting position of the proximity member in the real model device. A second step of measuring the shape in the width direction of the dummy roller off-line;
A third step of detecting an error of the roller shape measurement value in the offline measurement with respect to the roller shape measurement value in the online measurement;
The roller shape measuring device is removed from the real model device and the proximity member is attached, and the clearance with the dummy roller is adjusted to a set value by expanding and contracting the expansion and contraction portion of the proximity member in consideration of the detected error. A fourth step;
And a fifth step of removing the proximity member adjusted to the set value from the real model device and attaching it to the device frame on-line, and
The clearance adjustment method according to claim 1, wherein the curing film coated on the metal roller is peeled off at any time after the first step to after the fifth step.

Images