JPH1111749A - Mill roll stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten base paper replacing time by eliminating useless motion of arms so as to save extra moving time of the arms. SOLUTION: A mill roll stand is provided with rotatable arms 15, 16 releasing support of old roll base paper carried out upon completion of use and supporting new roll base paper 19 carried in for use. A photoelectric tube 20 serving as a detecting means for detecting the outer diameter of the new roll base paper at the stand-by is provided on the tip part 35 side of the arm 15. A control device is provided in a control panel 23 to control the motion of the arms 15, 16 so as to be the minimum moving quantity required to take refuge to the outside of an area corresponding to the larger outer diameter between the outer diameter of the new roll base paper 19 and old roll base paper on the basis of the detected result of the photoelectric tube 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mill roll stand for supplying a roll base paper to a corrugating machine.

[0002]

2. Description of the Related Art FIG. 4 is a side view showing a mill roll stand of a conventional corrugating machine, and FIG. 5 is a plan view thereof.
The roll base paper 1 is carried into the machine from outside the mill roll stand 4 by a carriage 3 guided and moved by a guide rail 2 buried underground. At this time, the left and right arms 5 and 6 of the mill roll stand 4 are connected by a chain line in FIG. 4 so that the roll base paper 1 having the maximum diameter indicated by the chain line does not become an obstacle for carrying in the roll base paper 1. Raise to the highest position shown. When the roll base paper 1 reaches a fixed position near the center of the mill roll stand 4, the arms 5, 6 are lowered to such a height that the chucks 7, 8 at the ends thereof can be inserted into the core tube 1 a of the roll base paper 1. 6 is moved inward in the axial direction, the chucks 7 and 8 are inserted into the core tube 1a, and the roll base paper 1 is gripped. Next, the roll base paper 1 is lifted from the carriage 3 to a height convenient for the base paper feeding operation, and the base paper feeding operation is completed.

By the way, in a corrugated machine,
Due to the recent shortening of order, the length of the base paper to be rewound and used at one time is shortened, and the roll base paper 1 is replaced with the next roll base paper 1 only by using a rewound base paper of several hundred meters, or in extreme cases, tens of meters. That happens frequently. The roll base paper 1 that has been removed from the machine without being used up is supplied to the mill roll stand 4 again when needed next time. For this reason, the diameter of the roll base paper 1 supplied to the mill roll stand 4 fluctuates irregularly from large to small.

[0004]

However, the arms 5 and 6 of the conventional mill roll stand 4 allow the roll paper 1 having the maximum diameter indicated by a chain line in FIG. When the roll paper 1 having a small diameter indicated by a solid line is carried in, the arms 5 and 6 have to move a long distance from the highest position to the lowest position in order to grip the roll paper 1 having a small diameter. Must. Therefore, there is a problem that time is wasted correspondingly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has been made in consideration of the following problems.
A detection means is provided to measure the diameter of the new roll base paper that is carried in for replacement, and based on the measurement results, the arm movement position is controlled, eliminating unnecessary movement of the arm and reducing the extra movement time of the arm. It is an object of the present invention to provide a mill roll stand that can save time and reduce the time for changing the roll base paper.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention releases the support of an old roll base paper which is finished to be used and carried out, and supports a new roll base paper which is carried in for use. In a mill roll stand having a rotatable arm, a detecting means for detecting the outer diameter of the new roll base paper in a standby state is provided on the arm, and based on a result detected by the detecting means, the new roll base paper and It is characterized by comprising a control means for controlling the movement of the arm to a minimum amount of movement necessary for retreating out of the area corresponding to the larger outer diameter of the old roll base paper.

[0007]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a fragmentary front view showing a mill roll stand according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating measurement of an outer diameter of a roll base paper and movement of an arm in the mill roll stand according to the embodiment of the present invention. It is a side view. The mill roll stand 9 according to this embodiment includes a rotating shaft 12 supported by frames 10 and 11.
And a rotation driving device 13 disposed at one end of the rotation shaft 12.
And left and right arms 1 slidably supported on a rotating shaft 12
5, a screw shaft 17 for moving the arms 15 and 16 in the axial direction, and a screw shaft driving device 18 disposed at one end of the screw shaft 17 are provided. Arm 1
A photoelectric tube 20 as a detecting means for detecting the outer diameter of the new roll base paper 19 in a standby state is provided at the leading end side of 5 and 16.
On one frame 10, a control panel 23 for controlling the movement of the arms 15, 16 is provided.

The rotating shaft 12 is rotatably supported at both ends by left and right frames 10 and 11 erected on the ground.
It is driven by a rotation drive device 13 provided at the shaft end.
The rotary shaft 12 is provided with a key 14 in the axial direction, and the bearing 2 is located at a position different from the key 14 in the circumferential direction.
5 and 26 are provided, and the screw shaft 17 is attached to the bearing 2.
It is rotatably supported at 5, 26.

Further, the rotary shaft 12 has a screw shaft driving device 18 fixedly provided at a position between one bearing 25 and the frame 10. The screw shaft 17 is provided with male screws 28 and 29 in opposite directions engraved left and right symmetrically.
The gear 30 and the screw shaft driving device 18
The rotational force is transmitted by meshing with a small gear 32 provided at the shaft end of the drive shaft 31. The rotating shaft 12 slidably supports the left and right arms 15 and 16, and integrally rotates the left and right arms 15 and 16 via the key 14.

The left and right arms 15 and 16 have a base portion 34 and a tip portion 35. A large-diameter hole 36 and respective small-diameter screw holes 37 and 38 are provided in the base 34 in parallel with each other. 36 is fitted to the outer periphery of the rotary shaft 12, and the small-diameter screw holes 37 and 38 are formed in the corresponding male screws 28 and 2 of the screw shaft 17.
9 is screwed. The small diameter screw holes 37 and 38 of the left and right arms 15 and 16 are provided with female threads in opposite directions. Further, the arms 15 and 16 have chucks 41 and 42 fitted in through holes 39 formed in the distal end portion 35, respectively.
The light projector 21 and the light receiver 22 are mounted via respective mounting members 44 and 45 fixed at positions closer to the distal ends than the chucks 41 and 42.

The left and right arms 15, 16 are prevented from rotating with respect to the rotary shaft 12 by the key 14, and the base 34 is slidably supported along the key 14 with respect to the rotary shaft 12. The rotation of the screw shaft 17 with the rotation shaft 12 by the operation of the device 13 and the forward and reverse rotation of the screw shaft 17 by the operation of the screw shaft driving device 18 make it possible to approach and move away from each other. The chucks 41 and 42 provided on the left and right arms 15 and 16 integrally have a tapered and tapered chuck main body 47 and a parallel cylindrical portion 48, and a central hole 4 extending between the chuck main body 47 and the parallel cylindrical portion 48.
9 are arranged on the same axis with each other, and each arm 1
The parallel tubular portion 48 is inserted into the through holes 39 of the distal end portions 35 of the fifth and the 16th portions and fitted to the arms 15 and 16.

The detecting means is provided via a light emitter 21 mounted via a mounting member 44 fixed to the outer surface on the distal end side of one arm 15 and a mounting member 45 fixed on an outer surface on the distal side of the other arm 16. An attached light receiver 22 is provided. The light projector 21 and the light receiver 22 are arranged concentrically in the center holes 49 of the corresponding chucks 41 and 42. For example, a reflection-type photoelectric tube 20 is arranged toward one of the arms 15 and 16 toward the side where the roll base paper 19 is carried in, that is, toward the side where the new roll base paper 19 is waiting to be carried next. .

A control panel 23 provided on the frame 10
Inside, there is a control device 51 (see FIG. 3) as control means. As shown in FIG. 3, the control device 51 includes an old paper diameter calculation unit 52 that receives a base paper travel length detection signal and a base paper rotation speed detection signal to calculate the diameter of the old roll paper, and an arm that receives the arm position detection signal. An arm position calculating unit 53 for calculating the positions of the positions 15 and 16, a comparing unit 54 for comparing the arm position calculating unit 53 with the calculation result of the old base paper diameter calculating unit 52,
An arm raising / lowering operation unit 55 for controlling the raising / lowering operation of the arms 15 and 16 is provided. The comparison unit 54 receives a new base paper end face detection signal as a detection result regarding the diameter of the new roll base paper 19 to be carried in.

Based on the result detected by the detecting means, the control device 51 sends the new roll base paper 19 and the old roll base paper out of the larger one through the rotary drive device 13 and the screw shaft drive device 18. The rotation angle of the rotary shaft 12 and the positions of the arms 15 and 16 are controlled so that the minimum amount of movement required to retreat outside the area corresponding to the diameter is obtained.

The operation of the mill roll stand according to the embodiment of the present invention will be described. When the work on the old roll base paper is completed and the new roll base paper 19 is to be replaced, the old roll base paper carry-out arm angle A is determined based on the paper speed and the base paper rotation speed.
Is calculated, and the operation of changing the roll base paper is started. The diameter at which the old roll base paper is lowered can be determined by a known technique, for example, by measuring the speed of the paper and the number of rotations of the chucks 41 and 42, and calculating from these values.
When the old roll base paper is lowered from the diameter obtained in this way until it comes into contact with the conveyor, the screw shaft 17 is then rotated to slide the arms 15 and 16 in the axial direction.
The interval is increased until the first and second rolls come out of the same core tube as the core tube 1a of the old roll base paper shown in FIG.

Next, the arms 15 and 16 are raised to carry out the old roll base paper and carry in the new roll base paper 19.
At this time, since the diameter of the old roll base paper is known as described above, it is possible to calculate the arm angle A as to how far the arms 15 and 16 should be raised so as not to hinder unloading. However, the diameter of the new roll base paper 19 is still unknown at this time. While raising the arms 15 and 16, the end face of the new roll base paper 19 waiting is scanned by the photoelectric tube 20, the diameter of the new roll base paper 19 is detected, and the arm angle A and the new roll base paper waiting are detected. 19 diameter detection result B
In contrast, if the diameter of the new roll base paper 19 is larger, the arm angle A is reached quickly, and at this time, the following operation is performed.

Even if the arms 15 and 16 are raised to a position where they do not hinder the transfer of the old roll base paper, since the phototube 20 is still at the end surface scanning position of the new roll base paper 19, the arm 1
5 and 16 are continued to rise, and in parallel with this, the old roll base paper is carried out. When the photoelectric tube 20 detects the outer diameter of the new roll base paper 19 by continuing to raise the arms 15 and 16, the rotation shaft 12 is further rotated by a predetermined evacuation angle θ shown in FIG. When the arm 15 and 16 are rotated by the evacuation angle θ and raised, the arms 15 and 16 stop, carry in the waiting new roll base paper 19, replace the new roll base paper 19, and complete the operation.

The arm angle A is compared with the detection result B of the diameter of the new roll base paper 19 which is waiting, and when the detection result B is reached quickly, the following operation is performed. Before reaching the position where the old roll base paper is released, the photoelectric tube 20 detects the outer diameter of the new roll base paper 19, and in this case, the arm 1 is moved to the position where the old roll base paper is released.
The ascent of the arms 15 and 16 is stopped when the arm angle A is reached. Next, the unloading of the old roll base paper, the loading of the new roll base paper 19 in a standby state, and the gripping by the chucks 41 and 42 are performed in parallel, and the operation is completed.

According to the mill roll stand 9 according to the embodiment of the present invention, the photoelectric tube 20 is provided on the tip end 35 side of the arms 15 and 16 and is arranged concentrically with the chucks 41 and 42, and Since it passes through the diameter portion substantially, it is measured at the place where the roll base paper diameter is the largest, and there is an advantage that a measurement error is reduced as compared with the case where the photoelectric tube 20 is provided at a position apart from the diameter of the roll base paper 19.

It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible.

[0021]

According to the present invention, the outer diameter of the new roll base paper can be accurately detected by providing the arm with a detecting means for detecting the outer diameter of the new roll base paper in a standby state. A control means for controlling the movement of the arm to a minimum amount of movement required to retreat outside the area corresponding to the larger outer diameter of the new roll base paper and the old roll base paper based on the result Thus, the amount of movement of the arm can be suppressed to the necessary minimum, the unnecessary movement of the arm can be eliminated, the extra movement time of the arm can be omitted, and the time for changing the base paper can be shortened.

[Brief description of the drawings]

FIG. 1 is a fragmentary front view showing a mill roll stand according to an embodiment of the present invention.

FIG. 2 is a side view showing the measurement of the outer diameter of the roll base paper and the movement of the arm in the mill roll stand according to the embodiment of the present invention.

FIG. 3 is a block diagram of a mill roll stand according to the embodiment of the present invention.

FIG. 4 is a side view showing a mill roll stand of a conventional corrugating machine.

FIG. 5 is a plan view showing a mill roll stand of a conventional corrugating machine.

[Explanation of symbols]

 9 Mill Roll Stand 10, 11 Frame 12 Rotary Shaft 13 Rotary Drive 14 Key 15, 16 Arm 17 Screw Shaft 18 Screw Shaft Drive 20 Photoelectric Tube 21 Floodlight 22 Receiver 23 Control Board 25, 26 Bearing 28, 29 Male Screw 30 Gear 31 Drive shaft 32 Small gear 34 Base 35 Tip 36 Large diameter hole 37, 38 Small diameter screw hole 39 Through hole 41, 42 Chuck 44, 45 Mounting member 47 Chuck body 48 Parallel cylinder part 49 Center hole 51 Controller 52 Old paper diameter calculation Unit 53 arm position calculation unit 54 comparison unit 55 arm lifting / lowering operation unit

Claims (1)

[Claims] 1. A mill roll stand having a rotatable arm for supporting a new roll base paper to be carried in for use by releasing the support of an old roll base paper to be conveyed after being used is waiting. Detecting means for detecting an outer diameter of the new roll base paper is provided on the arm, and an area corresponding to a larger outer diameter of the new roll base paper and the old roll base paper based on a result detected by the detecting means. A mill roll stand comprising a control means for controlling the movement of the arm to a minimum amount of movement required for retreating outside.