JPH08201030A - Method for measuring roll diameter of multiple-spindle roll turret - Google Patents

Abstract

PURPOSE: To accurately measure roll diameter after moving the support shaft of a roll to a fixed position by turning a turret. CONSTITUTION: First, the fixed position of a two-shaft turret 1 is confirmed depending upon whether or not a zero-point tool 5 installed at a supporting frame 11 is detected by a position sensor 6. Then, when the fixed position is confirmed, the diameter of a roll 10 fitted to a first supporting shaft 2 is measured by a distance sensor 7. Also, when the turret 1 is not located at the fixed position, a motor 4 is operated and the turret 1 is rotated until a sensor 6 detects the tool 5 on the basis of the turning command of the operation device. Then, when the tool 5 is detected, the motor 4 is stopped and then the roll diameter is measured by the sensor 7. A roll diameter and the remaining amount of sheet are calculated by an operation device according to the measurement value. When the roll 10 has a remaining amount of sheet material, the measurement of roll diameter is started again. When these is no remaining amount, measurement is completed and the an alarm such as the replacement of the roll 10 is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a roll diameter of a multi-axis roll turret for winding and unwinding a sheet material.

[0002]

2. Description of the Related Art Conventionally, a multi-axis roll turret has been used in order to continuously and efficiently take up and unwind a sheet material.

As this multi-axis roll turret, for example,
There is a biaxial roll turret. As shown in FIG. 4, the biaxial roll turret 1 includes a main shaft 8, a support frame 11 that rotates about the main shaft 8, and the support frame 11.
The drive device 4 for turning the shaft, the first and second support shafts 2 and 3 which are respectively passed through the tip of the support frame 11, and the distance sensor 7.

A method of using the biaxial roll turret having the above structure will be described by taking the case of unwinding a sheet material as an example.

First, the roll 10 in which the sheet material 12 is wound is pivotally attached to the two support shafts 2 and 3. Then, the sheet material 12 is pulled out from the roll 10 axially attached to the first support shaft 2 and used.

The distance sensor 7 for measuring the diameter of the roll 10 is on a line extending from the main shaft 8 and the first support shaft 2 at the position of the support frame 11 where the unwinding starts, as shown in FIG. Then, the measuring shaft 7a is installed so as to be vertical on the surface 20 of the roll 10 axially attached to the first supporting shaft 2.

As the sheet material is continuously used, as shown in FIG.
As shown in (b), the roll 1 axially attached to the first support shaft 2.
The winding diameter of 0 is smaller, and the weight is smaller than the weight of the roll 10 pivotally mounted on the second support shaft 3, and the balance between the first support shaft 2 and the second support shaft 3 can be maintained. It becomes difficult, and the weight of the roll 10 pivotally attached to the second support shaft 3 causes the roll 10a pivotally attached to the first support shaft 2 to pivot upward.

Since the main shaft 8 is connected to the driving device 4 such as a motor through the gears and the timing belt, the above-mentioned turning is caused by the inertia of the driving device 4, and the moving amount is very small.

However, when swiveling as shown in FIG. 5 (b), the measuring axis 7a of the distance sensor 7, which was positioned vertically on the surface 20 of the roll, is not vertical on the surface 20a of the roll 10a, so that it is accurate. The roll diameter could not be measured. In particular, the remaining amount of sheet material wound on the roll becomes small, and it is necessary to accurately measure the remaining amount of the roll to know the replacement timing, and it is not possible to measure the accurate roll diameter. , It was necessary to accelerate the roll replacement timing.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned fact, and an object of the present invention is to accurately measure the value of the diameter of a roll used in a multi-axis roll turret. It is to provide a method for measuring a roll diameter of a multi-axis roll turret.

[0011]

According to a first aspect of the present invention, there is provided a method for measuring a roll diameter of a multi-axis roll turret, in which a plurality of rolls 10 are arranged so as to be parallel to the main shaft 8 about the main shaft 8, In a roll diameter measuring method for a multi-axis roll turret, which measures the diameter of the roll 10 using a distance sensor 7, after rotating the turret 1 to move the support shaft 2 of the roll 10 to a fixed position, the diameter of the roll 10 is changed. It is characterized by measuring.

A method of measuring a roll diameter of a multi-axis roll turret according to a second aspect of the present invention is to detect the fixed position according to the first aspect of the present invention so that the support shaft 2 on which the roll 10 is axially attached by the second distance sensor 6a. It is characterized by measuring and detecting the distance.

[0013]

According to the roll diameter measuring method of the multi-axis roll turret according to the present invention, the turret is swiveled to move the support shaft of the roll to a fixed position before measuring the diameter of the roll, so that the diameter of the roll is measured. It is possible to measure the roll diameter at a position where the distance sensor is perpendicular to the surface of the roll axially attached to the support shaft on a line obtained by extending the line connecting the main shaft and the support shaft.

Further, since the distance of the support shaft on which the roll is pivoted is measured by the second distance sensor and the fixed position is detected by comparing with the reference distance, the turret can be moved to the fixed position more accurately. You can move.

An embodiment will be described in detail below with reference to the accompanying drawings.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a biaxial roll turret which is an embodiment using the method for measuring the roll diameter of a multiaxial roll turret of the present invention, and FIG. 2 is an operation of the biaxial roll turret shown in FIG. It is a flowchart figure which shows.

As shown in FIG. 1, the biaxial roll turret 1 of the present embodiment has a main shaft 8, a support frame 11 that pivots about the main shaft 8, a drive device 4 that pivots the support frame 11, and a support. The frame 11 is composed of first and second support shafts 2 and 3, which are respectively passed through the tip of the frame 11, and a distance sensor 7.

The main shaft 8 is joined to a support frame 11 and is connected to a motor, which is a driving means 4, via a gear and a timing belt. Further, the first and second support shafts 2 and 3 are parallel to the main shaft 8 and can be passed through substantially the tip of the support frame 11 so that the rolls can be respectively attached thereto. Therefore, by operating the motor, the spindle 8
With respect to the center of rotation, the support frame 11 and the first and second
The support shafts 2 and 3 can be rotated.

An origin jig 5 for detecting a fixed position is installed on the support frame 11 with the main axis 8 as the center of symmetry. The origin jig 5 is detected by a position sensor 6 attached to a mount 13 that supports the biaxial roll turret 1, and the biaxial roll turret 1 can be stopped at the same position by turning in the same direction. This position sensor 6
Although it depends on the material and shape of the origin jig 5, it is preferable to use a proximity switch, a photoelectric switch, or the like.

The distance sensor 7 has a measuring axis 7a of the distance sensor 7 on a line extending from a line connecting the main shaft 8 and the first supporting shaft 2 when the biaxial roll turret 1 stops at a fixed position. Are installed so as to be vertical on the surface of the roll 10 axially attached to the first support shaft 2. This distance sensor 7
Is preferably a contact type distance sensor with high accuracy, and it is preferable to use a laser displacement sensor, an ultrasonic displacement sensor, or the like.

A series of operations of the biaxial roll turret configured as described above will be described by taking a case where a sheet material is unwound as an example.

First, the roll 10 having the sheet material 12 wound thereon is axially attached to the first and second support shafts 2 and 3. And
As shown in FIG. 1, the roll 10 axially attached to the first support shaft 2
The sheet material 12 is pulled out and used.

When the sheet material is continuously used, the first
The roll diameter of the roll 10 axially attached to the support shaft 2 becomes smaller, and the weight of the roll 10a axially attached to the first support shaft 2 becomes smaller than that of the second support shaft 3 as shown in FIG. The weight of the attached roll 10 becomes lighter, and the roll 10a pivotally attached to the first support shaft 2 turns upward.

When the roll diameter of the roll 10a is measured by the distance sensor 7 in this state, an accurate value cannot be obtained. Therefore, as shown in the flow chart of FIG. 2, a roll is calculated by an arithmetic unit (not shown). Perform a diameter measurement.

Description will be given with reference to this flowchart.
First, the measurement device is instructed to start measurement (ST1)
Then, the fixed position confirmation of the turret is confirmed by checking whether or not the origin jig 5 installed on the support frame 11 is detected by the position sensor 6 (ST2). Then, when the fixed position of the turret is confirmed (ST3), the roll sensor axially attached to the first support shaft 2 is measured by the distance sensor 7 (ST7). If the position sensor 6 does not detect the origin jig 5 at the time of confirming the fixed position, the arithmetic unit gives a turret turning instruction (ST4). The turning of the turret is determined by the balance of the rolls attached to the support shafts 2 and 3, and the turning direction is determined by the unwinding and winding operations.

In this embodiment, since the unwinding operation is performed by the two-axis roll turret, the motor 4 is operated so that the first support shaft 2 turns downward (ST5).

Then, the motor 4 is operated to rotate the turret until the position sensor 6 detects the origin jig 5. When the position sensor 6 detects the origin jig 5, the motor 4
After stopping the operation of the turret and turning the turret,
6) The distance sensor 7 measures the roll diameter of the roll attached to the first support shaft 2 (ST7). Then, using the value measured by this distance sensor 7, the roll diameter
Also, calculate the remaining amount of sheet material wound on the roll (S
T8). According to the remaining amount of the sheet material 12 wound on the roll 10 (ST9), when there is the remaining amount of the sheet material on the roll 10, the measurement of the roll diameter is started again. However, it is preferable to provide a delay timer for measurement instead of continuously measuring (ST10). If there is no remaining sheet material on the roll 10, the measurement is terminated, and a warning such as the replacement of the roll 10 is output by the arithmetic unit (ST11).

In this way, since the fixed position of the turret is confirmed before measuring the roll diameter, the accurate roll diameter can be measured by the distance sensor.

When the fixed position confirmation (ST3) of the turret is performed, the position sensor 6 detects the origin jig 5 and turns it on.
Even in the state, the distance sensor 7 is not measured (ST7), but the motor 4 is once operated so that the first support shaft 2 turns upward, and the position sensor 6 operates the origin jig 5. Move to a position that is not detected. Then, in ST4, the first
There is also a method in which the support shaft 2 of 1 is turned downward, the turret is moved to the fixed position again, and the subsequent steps are advanced.

According to this method, when measuring the roll diameter,
Since the position sensor 6 detects the origin jig 5 by turning the turret in a fixed direction, the turret can be stopped at a fixed position, and the distance sensor 7 can accurately and accurately measure the roll diameter. it can.

FIG. 3 is an enlarged partial perspective view of a main part of a biaxial roll turret which is another embodiment of the roll diameter measuring method of the multiaxial roll turret of the present invention.

The biaxial roll turret of this embodiment has substantially the same structure as the biaxial roll turret shown in FIG. 1, except that the position sensor 6 is replaced by a second distance sensor 6a. The second distance sensor 6a measures the distance from the first support shaft 2 at a fixed position, stores this distance as a set value, and uses it for confirmation of the fixed position when the turret is out of balance. Is. The basic operation is the same as the operation described above.

The difference is that the second distance sensor 6a confirms the fixed position. Therefore, when the support shaft 2 turns upward, the distance between the second distance sensor 6a and the support shaft 2 becomes larger than the set value, and it can be confirmed that the support shaft 2 has deviated from the fixed position.

In this method, the position of the turret is numerically recognized and the fixed position is determined by using the numerical value, as compared with the method of confirming the fixed position by turning the position sensor 6 ON and OFF using the position sensor 6. Since it can be confirmed, the fixed position can be accurately detected.

In the above embodiment, the biaxial roll turret has been described as an example, but the present invention is not limited to the biaxial roll turret, and can be used for a multiaxial roll turret such as a triaxial or quadriaxial roll turret. it can. Further, in the above embodiment, the unwinding operation is described as an example, but the winding operation can be similarly used.

[0036]

As described above, according to the roll diameter measuring method of the multi-axis roll turret of the present invention, even if the weight of each roll fluctuates and the balance changes, the turret is swung to a fixed position. Since the diameter of the roll is measured, the measuring axis of the distance sensor for measuring the diameter of the roll is perpendicular to the surface of the roll, and accurate and accurate measurement can be performed.

Further, when the fixed position is detected by using the support shaft and the second distance sensor, the fixed position can be confirmed numerically, the turret can be stopped with high accuracy, and the roll diameter can be accurately measured. You can take measurements.

[Brief description of drawings]

FIG. 1 is a perspective view of a biaxial roll turret showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the biaxial roll turret of FIG.

FIG. 3 is an enlarged perspective view of a main part of a biaxial roll turret showing another embodiment of the present invention.

FIG. 4 is a perspective view of a conventional biaxial roll turret.

FIG. 5 is a side view illustrating positions of a distance sensor and a roll.

[Explanation of symbols]

 1 2 axis roll turret 2 1st support axis 4 drive device 6 position sensor 6a 2nd distance sensor 7 distance sensor 8 main axis

Claims (2)

[Claims] 1. A plurality of rolls (10) are arranged so as to be parallel to the main shaft (8) around the main shaft (8), and the diameter of the roll (10) is measured using a distance sensor (7). In the method for measuring the roll diameter of a multi-axis roll turret, the diameter of the roll (10) is measured after rotating the turret (1) to move the support shaft (2) of the roll (10) to a fixed position. Measuring method for roll diameter of multi-axis roll turret. 2. The fixed position detection according to claim 1, wherein the second distance sensor (6a) measures the distance of the support shaft (2) on which the roll (10) is pivoted. A method for measuring a roll diameter of a multi-axis roll turret.