JP2000109267A - Defective take-up detector for take-up roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loose take-up detector for take-up rolls that determines whether cylindrically taken-up rolls of paper, sheet plastics and the like have proper taken-up hardness or not. SOLUTION: The detector comprises a pressure means or core support 3 for applying axial pressure to the center of a take-up roll 6 to establish relative axial stress between the center and periphery thereof, and measuring means 4 and 5 for measuring the variation of an end face 6a of the take-up roll 6 under the pressure, or that deformation of the roll end face 6a which results from the relative axial stress.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detecting device for detecting a winding failure of a winding roll formed by winding a paper or a plastic sheet into a column.

[0002]

2. Description of the Related Art When quality assurance is performed when shipping a take-up roll, it is sometimes necessary to determine whether or not the winding hardness of the take-up roll is appropriate.
However, in such a case, conventionally, the sound and the visual and experience of the worker were hit by hitting the take-up roll with an appropriate tool to hear the sound or visually observing the disturbance of the end face of the take-up roll. Only a very qualitative method was used which relied on. Therefore, it is not only costly because a dedicated worker is required, but also it is difficult to stably perform highly accurate determination.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems by quantitatively grasping the winding hardness of the winding roll and improving the quality control of the winding roll. It is an object of the present invention to provide an apparatus for detecting a winding failure of a winding roll that can contribute to the winding roll.
Pressing means (winding core support 3) for pressing the central portion of the roller in the axial direction to generate relative stress in the axial direction between the central portion and the outer peripheral portion;
Measuring means 4 for measuring the amount of change in the end face 6a of the roll, that is, the amount of deformation of the roll end face 6a due to the relative stress in the axial direction.
And a configuration including

In carrying out the apparatus of the present invention, the change amount of the winding roll end face 6a measured by the measuring means 4 is determined by the deflection of the end face 6a with respect to the winding roll axis (the axis 7a of the winding core 7). At least one of the following: an amount, a deviation amount of the entire end face in the axial direction of the take-up roll, and a partial protrusion amount of the end face.

[0005] Further, the measuring means comprises a first measuring means 4 for measuring at least one of the three variations,
A second measuring means 5 for measuring at least one of the three variations.

The measuring means 4 and 5 scan between the central portion of the winding roll 6 and the outer peripheral edge of the roll, and
And a device that measures a change in the distance between them.

The take-up roll 6 is arranged so that its axis (the axis 7a of the winding core 7) is in a vertical direction, and the pressing means (wind-core support 3) is The central portion may be lifted from below to above. In this case, specifically, the conveyor 1 which supports and conveys one end surface 6a of the winding roll 6, a lower limit position below the roll supporting surface of the conveyor 1, and an ascent above the roll supporting surface. A core supporter 3 having a conical positioning projection 20 that can be moved up and down between the limit position and the core 7 of the take-up roll 6 and a conveyor width direction of the core 7 of the take-up roll 6 A centering means 2 for centering the take-up roll 6 on the conveyor 1 so that the position of the take-up roll coincides with the core support 3, and a lateral side of the core support 3 below the roll support surface of the conveyor 1. And a measuring means 4 attached to the traversing table 28 so as to be able to reciprocate in the width direction of the conveyor at one side position, and the measuring means 4 is controlled by the core supporting table 3. Lifted The lower end surface of the winding roll 6 6
The amount of change of “a” can be measured via the gap of the conveyor 1.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a roller conveyor for conveying a take-up roll to a packaging device not shown; The centering means 2, the core support 3, the first measuring means 4, and the second measuring means 5 are provided side by side.

As shown in FIGS. 4 and 5, a take-up roll 6 conveyed by the roller conveyor 1 is provided with a paper or plastic sheet of a predetermined length on a cylindrical core 7 of a standard size such as a paper tube. And FIGS. 1 and 2
As shown by an imaginary line, the core 7 is horizontally placed on the roller conveyor 1 and transported so that the axis 7a of the core 7 is vertical.

The centering means 2 includes three parallel detectors 8a to 8c for detecting the take-up roll 6, and a pair of left and right roll shift plates 9a and 9b. The three parallel detectors 8a to 8c are arranged below the roll supporting surface of the roller conveyor 1, and are turned on by facing the lower end surface 6a of the take-up roll 6, and the winding core 7 is turned on. When the take-up roll 6 is displaced in the width direction of the conveyor 1 in the horizontal direction, the off-operation is performed by facing the central space, and among the three parallel detectors 8a to 8c,
At least one of the detectors is juxtaposed at appropriate intervals in the left-right lateral direction so that it can be turned off when facing the central space of the winding core 7. Therefore, after the three parallel detectors 8a to 8c are turned on and at least one of them is turned off, the driving of the roller conveyor 1 is stopped, so that the take-up roll 6 is turned into a pair of left and right. Centering position P1 between roll shift plates 9a and 9b
Can be stopped.

A pair of left and right roll moving plates 9a and 9b are attached to inner ends of a pair of left and right horizontal moving bodies 11a and 11b supported by slide guides 10a and 10b so as to be able to move horizontally in the left and right directions. Outer end portions of a pair of left and right rack gears 12a, 12b disposed below the roller conveyor 1 in parallel with the horizontal moving bodies 11a, 11b and the horizontal moving bodies 11a, 11b.
and b are connected by connecting members 13a and 13b.
The two rack gears 12a and 12b are arranged in parallel in the conveying direction of the roller conveyor 1, and mesh with a pinion gear 14 disposed therebetween, and the pinion gear 14 is driven to rotate forward and reverse by a rotary actuator 15 such as a hydraulic motor. The horizontal moving bodies 11a and 11b
The pair of right and left roll pulling plates 9a and 9b are moved symmetrically toward and away from each other via.

Incidentally, as shown in FIG.
Are arranged not at the center in the width direction of the roller conveyor 1 but at a position closer to one roll pulling plate 9b, so that the rack gear 12b on the same side is short and the rack gear 12a on the opposite side is long. ing. 16a, 1
6b is a pinion gear 1 of each rack gear 12a, 12b.
4 is a rack gear guide member that guides a portion that meshes with the pinion 4 from being separated from the pinion gear 14.

The winding core support 3 is arranged at the center position in the width direction of the roller conveyor 1 at a winding defect detection position P2 slightly lower than the centering position P1 with respect to the winding roll 6, and is located below the roller conveyor 1. 2 is supported by an upper end of an elevating rod 18 supported by an elevating guide 17 disposed on the side, and the elevating rod 18 is driven up and down by a cylinder unit 19, so that the roller supporting surface of the roller conveyor 1 shown in FIG. It moves up and down between a lower lower limit position and an upper limit position above the roll supporting surface of the roller conveyor 1 shown in FIG.

The winding core support 3 is a disk having substantially the same diameter as the outer diameter of the cylindrical winding core 7 of the take-up roll 6, and is fitted into the winding core 7 on the upper side thereof. A conical positioning projection 20 is provided so as to protrude, and is further turned on by facing a lower end surface 6a of the take-up roll 6 in a recess provided at the center of the upper end of the projection 20. A detector 21 that is turned off by facing the central space is attached.

Among the rollers of the roller conveyor 1, the two front and rear rollers located at a position overlapping with the elevating path of the core support table 3 as shown in the figure are divided into two right and left parts, and a lower two-part roller. Reference numerals 22a and 22b denote common support shafts 2 located at positions deviated from the elevating path of the core support 3.
3 and the other two split rollers 24a, 24
b, the inner ends thereof are bearings 25a and 25b, respectively, because the position of the support shaft overlaps with the elevating path of the core support 3.
Each is supported separately. Of course, each roller constituting the roller conveyor 1 including these two-part rollers 22a, 22b, 24a, 24b is driven by a motor (not shown) at the same peripheral speed in the same direction by a conventionally known method. is there.

The first measuring means 4 and the second measuring means 5 are arranged below the roller of the roller
And first and second detectors 32 and 33 attached via brackets 30 and 31 to horizontal slides 28 and 29 reciprocally driven by rodless cylinder units 26 and 27, respectively. Two detectors 3
4, 35. Detector 3 of each measuring means 4 and 5
Reference numerals 2 to 35 denote the inter-roller gaps 3 closest to the winding failure detection position P2 that matches the axis of the core support 3 among the inter-roller gaps adjacent to each other in the roller conveyor 1.
6 (see FIG. 1), the gap 36 between the rollers is formed by the rodless cylinder units 26 and 27 at a position directly below the center.
And reciprocate in parallel.

Thus, as shown in FIG.
When the position 8 is at the stroke start end position adjacent to the core support 3, the first detector 32 of the first measuring means 4 as shown in FIG.
Faces near the inner end of the lower end surface 6a of the take-up roll 6 supported by the core support 3, and the second detector 34 of the first measuring means 4 is located outside the first detector 32. They are arranged adjacently. When the horizontal motion table 29 is at the stroke start position adjacent to the core support 3, the first detector 33 of the second measuring means 5 is supported by the core support 3 as shown in FIG. Right below the end surface of the winding core 7 of the winding roll 6
A notch 37 (see FIG. 3) is provided on the core support base 3 and the conical positioning projection 20 on the upper side thereof so as to face the end face of the core 7. And the second detector 35 of the second measuring means 5 is provided with the first detector 33.
Is located adjacent to the outside of the.

First detectors 32, 33 of measuring means 4, 5
Is for measuring the distance between the lower end face of the winding roll 6 and the second detector 3 of the measuring means 4 and 5.
The first and third detectors 4 and 35 are turned on by facing the lower end surface 6a of the winding roll 6 and turned off by coming off the outside of the winding roll 6.
2, 33 measurement areas are detected.

Next, the method of use will be described. If the parallel detectors 8a to 8c detect that the take-up roll 6 conveyed by the roller conveyor 1 has reached the centering position P1, the parallel detectors 8a to 8c interlock with this detection operation. The roller conveyor 1 is stopped, and then the pinion gear 14 is driven to rotate forward by the rotary actuator 15, and a pair of left and right roll pulling plates 9a, 9a, 12b is connected via the rack gears 12a, 12b, the connecting members 13a, 13b, and the horizontal moving members 11a, 11b.
The take-up roll 6 stopped at the centering position P1 is centered at the center position in the width direction of the roller conveyor 1 by moving the rolls 9b closer to each other symmetrically from the separation standby position shown in FIG.

After the centering of the take-up roll 6, the pinion gear 14 is driven to rotate in the reverse direction by the rotary actuator 15 to return the pair of left and right roll shift plates 9a, 9b to the original separation standby position, and then the roller conveyor 1 is driven again. Then, the winding roll 6 at the centering position P1 is transported to the next winding failure detection position P2. Thus, the detector 2 at the center of the core support 3 waiting at the lower limit position
1 is turned on once by facing the lower end surface 6a of the take-up roll 6, and then turned off by facing the central space of the winding core 7 of the take-up roll 6. By stopping the conveyor 1, the winding roll 6 can be stopped at a state where the winding core 7 is located almost directly above the winding core support 3, that is, at the winding failure detection position P2.

At the winding failure detection position P2, the winding roll 6
Is stopped, as shown in FIG. 3, the core support 3 is moved by the cylinder unit 19 through the elevating rod 18.
Is raised from the lower limit position, the conical positioning projection 20 is fitted to the winding core 7 of the winding roll 6, the winding roll 6 is concentrically positioned with respect to the winding core support 3, and the winding is performed. The lower end surface of the core 7 is supported by the core support 3, and the take-up roll 6 is raised to a predetermined height from the roll support surface of the roller conveyor 1.

Next, the first measuring means 4 and the second measuring means 5 are separated from the stroke starting end position shown in FIGS. 3 and 5 by the rodless cylinders 26 and 27 via the horizontal motion tables 28 and 29. And the first detectors 32 and 33 of the measuring means 4 and 5, respectively, and the lower end surface 6a of the take-up roll 6 whose central portion (core 7) is lifted by the core support base 3. The distance between them is measured by scanning in a substantially radial direction. The measuring action of the first detectors 32 and 33 is as follows.
The second detectors 34 and 35 are connected to the lower end surface 6 a of the winding roll 6.
When the first measuring means 4 and the second measuring means 4 are turned off by the rodless cylinders 26 and 27 via the laterally movable tables 28 and 29, the operation is terminated at the time when the motor is turned off from the outside or when the set time elapses from the time of the off operation. By returning the measuring means 5 to the stroke start end position shown in FIGS. 3 and 5,
The winding failure detection operation ends.

More specifically, the specific change that occurs on the end face 6a of the winding roll 6 when the winding roll 6 is in a soft winding state, that is, when the winding hardness is softer than an appropriate value, is illustrated in FIG. As shown in FIG. 6A, the bending change in which the lower end surface 6a is inclined so as to be lowered toward the outer periphery, as shown in FIG. 6B, a stepwise change in which a certain area in the radial direction of the lower end surface 6a is stepped down, FIG. As shown in FIG.
6D, there is a change in misalignment that lowers the whole with respect to the winding core 7, and a protrusion change in which a partial protrusion is formed on the lower end surface 6a as shown in FIG. 6D. Of course, the protrusion change shown in FIG. 6D, for example, is not caused by the soft winding state in which the winding hardness of the winding roll 6 is softer than an appropriate value, but also by the meandering phenomenon of the sheet in the winding process on the winding core 7. Is what happens.

In other words, the winding failure detected by the apparatus of the present invention is caused by lifting the winding roll 6 to a predetermined height by supporting the lower end surface of the winding core 7 by the winding core support 3. This includes a change in the take-up roll end face 6a and a change in the take-up roll end face 6a occurring before lifting. Specifically, the amount of change in the take-up roll end face 6a as shown in FIGS.
6B, the step difference d2 of the step change shown in FIG. 6B, and the misalignment d of the misalignment change shown in FIG. 6C.
3, and the protrusion amount d4 of the protrusion change shown in FIG.
By measuring whether or not the allowable value is exceeded, it is possible to determine whether or not the winding roll 6 is in a winding failure state that does not conform to the shipping quality. Here, in particular, FIG.
Is often a winding failure that has occurred before the center of the winding roll 6 is lifted.
Since the change in the protrusion is conspicuous in appearance of the take-up roll 6, the allowable protrusion amount d4 is different from the other allowable deflection amount d.
1, the allowable step difference amount d2, the allowable misalignment amount d3, and the like are set smaller. For example, if the allowable deflection amount d1, the allowable step difference amount d2, and the allowable misalignment amount d3 are about 3 mm or less, the allowable protrusion amount d4 is set to about 1 mm or less.

In this embodiment, however, the first detector 32 of the first measuring means 4 changes the deflection shown in FIG.
The amount of change of the end face 6a due to the step change shown in FIG. 6B and the misalignment change shown in FIG. 6C is measured, and the first detector 33 of the second measuring means 5 calculates the change amount of the protrusion change shown in FIG. I am measuring. That is, the data of the distance in the take-up roll radial direction between the take-up roll end face 6a and the take-up roll end face 6a measured by the first detector 32 of the first measuring means 4 is a reference value (end face 6a
Is the distance from the detector 32 when is a horizontal flat surface)
When a state in which the measured distance data is smaller than the set value continues for a set time, a deflection change exceeding the allowable deflection amount d1 or a allowable change amount is calculated. An abnormality detection signal is output assuming that there is a step change exceeding the step difference d2 or a misalignment change exceeding the allowable misalignment d3. The data of the distance in the take-up roll radial direction between the take-up roll end surface 6a and the take-up roll end face 6a measured by the first detector 33 of the other second measuring means 5 is an allowable maximum change amount (for example, 1 m) from the reference value.
A comparison calculation is performed with the set value obtained by subtracting m). If there is a state where the measured distance data is smaller than the set value, it is determined that there is a protrusion change exceeding the allowable protrusion amount d4, and an abnormality detection signal is output.

A notch 37 (see FIG. 3) is provided in the core support 3 and the conical positioning projection 20 on the upper side thereof, so that the first detector 33 of the second measuring means 5 can be used. The change in the lower end surface 6a of the take-up roll 6 near the end surface of the take-up roll 7 supported by the take-up roll 6 can be measured because the change in protrusion shown in FIG.
This is because it may occur near the minimum diameter of the take-up roll 6 adjacent to.

The abnormality detection signal output based on the measurement data of the first detectors 32 and 33 of the first measurement means 4 and the second measurement means 5 is an abnormality detection signal based on the measurement result of the first measurement means 4. Or the abnormality detection signal based on the measurement result of the second measuring means 5 may be simply treated as an abnormality detection signal without discrimination, or a winding failure detection signal based on the measurement result of the first measuring means 4 may be used. It may be handled separately from the protrusion detection signal based on the measurement result of the second measuring means 5. In any case, when these abnormality detection signals are output, the operator is notified of this by a buzzer or a warning light, and the winding roll 6 at the winding failure detection position P2 is removed from the roller conveyor 1, and It can be transported to another suitable location. Needless to say, an automatic sorting device is disposed below the roller conveyor 1, and the automatic sorting device is operated based on an abnormality detection signal, so that the winding roll carried out by the roller conveyor 1 from the winding failure detection position P2. It is also possible to sort 6 into another route.

Further, depending on the arithmetic processing device for arithmetically processing the measurement data of the detector of the measuring means, one detector,
For example, only the measurement data of the first detector 33 of the second measuring means 5 is used to distinguish and detect the end face changes of FIGS. 6A to 6C and the end face changes (projection changes) shown in FIG. It is also possible. In other words, all the end surface changes shown in FIGS. 6A to 6D can be detected by one measuring unit. Of course, the deflection change shown in FIG.
The configuration may be such that any one or more of the end face changes can be detected among the step change shown in B, the misalignment change shown in FIG. 6C, and the protrusion change shown in FIG. 6D.

In the above embodiment, the centering position P1
Although the winding failure detection position P2 is set at a position distant to the lower side from, the centering and the winding failure detection may be performed at the same position. Further, measuring means 4 and 5 are disposed above the winding roll 6 lifted from above the roller conveyor 1 by the winding core support 3 so as to measure a change in the upper end surface of the winding roll 6. Is also good. Further, the winding failure detecting device of the present invention can be provided in a path for transporting the winding roll 6 in a state where the axis of the winding roll 6 (the axis 7a of the winding core 7) is oriented horizontally. In this case, in a state where the take-up roll 6 is stopped at a fixed position on the transport surface that supports the outer peripheral surface, or in a state where the take-up roll 6 is supported and lifted from the transport surface by the outer peripheral surface, (Core 7) pressing means from one side to the opposite side (core support 3 in the above embodiment)
And the change of the end face of the winding roll 6 at this time is measured by the measuring means.

[0030]

According to the apparatus of the present invention which can be implemented as described above, the central portion of the take-up roll 6 is pressed in the axial direction by a pressing means (in the embodiment, the core support 3). By measuring the amount of change in the end surface of the take-up roll that has occurred by measuring means, not only the take-up hardness of the take-up roll, but also the partial protrusion that has occurred on the end surface of the take-up roll before the pressing operation is performed. It is possible to quantitatively measure winding failures involving changes in the end surface of the winding roll, including high-precision determinations without relying on the hearing, vision, and experience of workers. Thus, it has been possible to streamline the detection of winding defects and to contribute to improving the accuracy of the quality control of the winding roll.

According to the configuration of the second aspect, the measurement of the amount of change in the end face of the take-up roll after pressing is performed by measuring the amount of deflection of the end face of the take-up roll with respect to the axis of the take-up roll and the entire end face. Alternatively, it can be easily implemented by measuring at least one of a partial shift amount in the axial direction of the take-up roll and a partial protrusion amount of the end face.

According to the third aspect of the present invention, at least two types of change amounts of the three types of roll end surfaces are used by using the first and second measuring means. Since the amounts can be measured separately, it is possible to easily and reliably measure changes in the roll end surface having different allowable changes.

Further, according to the structure of the fourth aspect,
The change in the roll end surface can be easily measured by using a reflection regression type photoelectric sensor, for example, a laser sensor. Further, according to the configuration of the fifth aspect, the change in the end surface of the winding roll in the soft winding state can be made to appear by using gravity, and the outer peripheral surface of the winding roll slides with another object. There is no need to create imprints.

[0034] Further, according to the structure of claim 6,
With respect to a winding roll conveyed while being laid horizontally on a roller conveyor or the like, it is possible to easily and reliably detect a winding failure state by relatively simple means.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the device of the present invention.

FIG. 2 is a vertical sectional front view showing a centering means and a core support of FIG. 1;

FIG. 3 is a longitudinal sectional front view showing a winding core support and a measuring means in a state at the start of a winding failure detection operation.

FIG. 4 is a perspective view showing a winding roll.

FIG. 5 is a vertical sectional front view showing a take-up roll lifted by a core support and measuring means;

FIGS. 6A to 6D are longitudinal sectional front views of a main part illustrating a change in a lower end surface of a take-up roll lifted by a core support.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller conveyor 2 Centering means 3 Winding core support stand (pressing means) 4 First measuring means 5 Second measuring means 6 Winding roll 6a Lower end face of a winding roll 7 Winding roll cores 9a, 9b Rolling plate 12a, 12b Rack gear 14 Pinion gear 15 Rotary actuator 18 Elevating rod 19 Elevating drive cylinder unit 20 Conical positioning projection 26, 27 Rodless cylinder unit 28, 29 Transverse table 32, 33 First detector 34, 35 Second detection Container 36 Air gap between rollers

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minoru Nakanishi 4-3-1 Jokoji Temple, Amagasaki-shi, Hyogo Oji Paper Co., Ltd. Kanzaki Mill (72) Inventor Nobuo Omohara 4-3-1 Jokoji Temple, Amagasaki-shi, Hyogo Prefecture No. Oji Paper Co., Ltd. Kanzaki Mill (72) Inventor Masanori Yoshii 2-20-13 Yuyamadai, Kawanishi-shi, Hyogo F-term in Nakajima Inter Co., Ltd. 3F048 AB01 AB05 CB00 DC01 3F055 AA01 AA05 CA12

Claims (6)

[Claims] 1. A take-up roll winding device comprising: a pressing device for pressing a central portion of the take-up roll in an axial direction thereof; and a measuring device for measuring a change amount of an end surface of the take-up roll after pressing. Defect detection device. 2. The amount of change in the end surface of the take-up roll measured by the measuring means includes the amount of deflection of the end surface with respect to the center of the take-up roll, the amount of deviation of the entire end surface or a portion in the direction of the take-up roll axis, The winding failure detecting device for a winding roll according to claim 1, wherein the winding roll is at least one of partial protrusion amounts of the end face. 3. The first measuring means for measuring at least one of the three change amounts, and the second measuring means for measuring at least one of the three change amounts. The winding failure detecting device for a winding roll according to claim 2, further comprising a measuring unit. 4. The apparatus according to claim 1, wherein said measuring means scans a portion between a central portion of the winding roll and an outer peripheral end of the roll to measure a change in a distance between the end surface and the roll. A winding-up defect detection device for a winding roll according to any one of the above. 5. The winding roll is arranged so that its axis is in a vertical direction, and the pressing means lifts a central portion of the winding roll from below to above. 5. The winding defect detection device for a winding roll according to any one of 4. 6. A conveyor for supporting and transporting one end surface of the take-up roll, and moving up and down between a lower limit position below the roll support surface of the conveyor and an upper limit position above the roll support surface. A winding core support having a conical positioning projection that is possible and fits into the winding core of the winding roll, and a position of the winding core of the winding roll in the conveyor width direction matches the winding core support. A centering means for centering the take-up roll on the conveyor, and a horizontal table provided reciprocally in the width direction of the conveyor at a position laterally below the roll support surface below the roll support surface of the conveyor, Measuring means attached to the traversing table, and the measuring means measures the amount of change in the lower end surface of the winding roll lifted by the core support via the gap of the conveyor. It was to measure, winding fault detection apparatus of the take-up roll according to claim 5.