JP2000000901A - Method for adjusting parallelism between rolls - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for adjusting a first roll and a second roll to be positioned exactly in parallel by actuating both rolls to get close to and recede from each other, in a device for fabricating a work between two parallel rolls. SOLUTION: One of the sides of a pasting roll 5 arranged at an optical position with the lower roll 2 of a single facer for manufacturing a single corrugated board is brought into contact with the lower roll 2 which is moved forward by a distance (α1). Then the one side is moved to a position distanced by a1 by a signal which detects the contact and stopped. After that, the other side of the pasting roll 5 is moved over a distance (β1), while the one side is fixed at its position as it is. Further the other side is moved to a position distanced by a1 by the signal which detects the contact and stopped to complete the parallel adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-roll parallel adjustment method for adjusting one roll to be parallel to the other roll.

[0002]

2. Description of the Related Art For example, in a single facer for producing a single-sided corrugated cardboard, a core paper is supplied between a pair of upper and lower corrugated rolls to form a corrugated corrugated paper. During the transfer, glue is applied to the top of the step from a sizing roll provided opposite to the lower roll, and is bonded to liner paper supplied from downstream of the lower roll to produce single-sided cardboard.

In such a manufacturing process, the lower roll and the sizing roll need to be adjusted in parallel, and if both rolls are not adjusted in parallel, the width of the top of the core paper in the width direction of the paper is not adjusted. There are areas where glue is not applied and areas where the amount of glue is applied, and defective products are manufactured as single-sided corrugated cardboard. The unit is moved, and parallel adjustment is performed visually and manually.

[0004]

However, even if the sizing roll is initially adjusted to be parallel to the lower roll, the parallelism is often impaired due to the following reasons. . That is, the sizing unit provided with the sizing roll is moved to a position away from the lower roll during the suspension of the single facer, and is brought closer to the lower roll when the next operation is resumed. Due to the structure, the glued roll does not always remain in the state of maintaining the original parallelism with the lower roll.

[0005] In addition, when the single facer is operated or stopped, steam is introduced into the lower roll and heated, or the steam is removed and cooled, but the thermal expansion coefficient and the thermal expansion coefficient in the width direction of the lower roll each time. Shrinkage is not always constant. Therefore, even in such a case, the parallelism of the sizing roll with respect to the lower roll is adjusted, but in the conventional case, the operator has to rely on the visual and manual work of a worker in a narrow environment at high temperature. Such a conventional method for adjusting the parallelism of rolls requires labor and time, and further involves dangers, making it difficult to perform parallel adjustment with high accuracy.

Japanese Patent Application Laid-Open No. 8-57992 discloses that
Only a method is disclosed in which the gap between the lower roll and the glued roll is adjusted while the core paper is held between the two rolls.

It is an object of the present invention to solve these problems and to provide a method for automatically adjusting the parallelism between rolls.

[0008]

According to the present invention, there is provided a method for adjusting a second roll in parallel with a first roll, wherein the second roll is separated from the first roll. A first step of fixing one side of the second roll, a second step of contacting the other side with the first roll, and then separating the second roll by a fixed distance, and a second step of fixing the other side of the second roll. Is brought into contact with the first roll, and then the third step of separating the same by the same constant distance as described above is a method for adjusting the parallelism between the rolls.

According to the inter-roll parallel adjustment method of the present invention, one side of the second roll placed at a position distant from the first roll in the first step is fixed in the second step, and the other side is fixed in the second step. When the first roll is brought into contact with one roll and the contact is detected, the second roll is returned by a certain distance therefrom. Conversely, in the third step, the other side is fixed, and one side is returned by the same fixed distance therefrom by moving contact. Both sides of the second roll are placed exactly parallel to the equidistant position from the first roll to perform the parallel adjustment.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in the schematic side view of the single facer in FIG. 1, an upper roll 3 and a lower roll 2 are provided between left and right machine frames 1, 1, and a gluing roll 5 rotating in a glue tank 4 is a doctor roll 6. Also, it is provided so as to be able to freely contact and separate from the lower roll 2. Reference numeral 7 denotes a pressure bonding means comprising an endless belt 8 which is in pressure contact with the lower roll 2, and the endless belt 8 is wound around rollers 7a, 7b, 7c. Reference numeral 10 denotes a gluing unit having a glue tank 4, and 11 denotes a frame. The glue tank 4, the gluing roll 5, and the doctor roll 6 are mounted between the left and right frames 11, 11.

A stopper 12 is provided below the frame 11 of the gluing unit 10 between the glue unit 10 and the machine frame 1, and an adjusting rod 13 is provided on the machine frame 1 correspondingly. The adjustment rod 13 is provided to be able to move forward and backward with respect to the stopper 12. Then, as shown in FIG. 3, a gear (worm) 15 provided in a gear box 14 attached to the machine frame 1.
Is rotatably supported by a bearing 17, and a threaded portion 13 a formed in a shaft portion of the adjusting rod 13 engages with a central screw hole of the boss 16, and a small gear 18 a engaged with the gear 15. Shaft 18 is connected to a motor 19 provided outside the machine frame 1, and the motor 19
Is rotated, the adjustment rod 13 moves forward and backward.
The motors 19 are provided independently for the left and right. An encoder 19a is provided for detecting the forward / backward movement distance of the adjustment rod 13 by the pulse signal.

In order to easily show the main structure of the single facer, the upper roll 3, the lower roll 2,
FIG. 2 shows a state of development on a line connecting the centers of the gluing roll 5 and the doctor roll 6. Further, a pressurizing cylinder 21 described later is also shown shifted from the plane.

The gluing unit 10 is provided movably from a position shown by a two-dot chain line in FIG. 1 to a position shown by a solid line by traveling on rails 32 of a base 30 by wheels 31 provided at the bottom of the frame 11. ing. When the gluing unit 10 is moved to the position shown by the solid line in FIG.
The sizing roll 5 provided on the sizing unit 10 can be pressed or retracted in the direction of the lower roll 2 by the movement adjusting mechanism 20 having the pressurizing cylinder 21 provided on the machine frame 1. As shown in FIG. 2, the pressurizing cylinder 21
1, the piston head 23 of the pressurizing cylinder 21 is fixed to the machine frame 1 by the shaft 24 when the gluing unit 10 is at the solid line position in FIG. You. Gluing unit 1
When retracting 0 to the position indicated by the two-dot chain line, the shaft 24 is pulled out and retracted.

At the time of the initial setting, the sizing roll 5 which is parallel to the lower roll 2 is moved to the lower roll 2 as described above due to a structural problem of the moving mechanism of the sizing unit 10. As a result of the approaching and separating operations, the parallelism is impaired, and the parallelism is not always maintained.

The lower roll 2 is connected to a motor 25 via a speed reducer.
Driven synchronously by the 25a is a pulse transmitter. The gluing roll 5 is driven by a motor 26 via a speed reducer. 26a is a pulse transmitter.

FIG. 4 is a schematic block diagram of a control circuit of the single facer. Pulse transmitters 25a, 26a,
The signals of the encoders 19a, 19a are sent to the control unit 40, and the control signals from the control unit 40 are transmitted to the motors 19, 25, 2,
6 to control the rotation of each motor.
In addition, a control signal is sent from the control unit 40 to the solenoid valve 27, and the opening and closing of the solenoid valve 27 is controlled based on this signal, whereby the operating state of the pressurizing cylinder 21 is controlled. The pressurizing cylinder 21 is a single-acting type, and the solenoid valve 27 can switch the line between pressurizing, stopping, and discharging.
The rod of the pressure cylinder 21 can be extended, stopped, and retracted.

The rotation speed of the lower roll 2 and the gluing roll 5 is detected by counting the pulse signals from the pulse transmitters 25a and 26a by the control unit 40. The encoders 19a, 19a detect the protruding position of the adjusting rod 13 based on the detected position, and the protruding amount of the adjusting rod 13 is controlled based on the detection result.

Prior to the operation of the single facer, the gluing unit 10 is moved rightward from the position shown by the two-dot chain line in FIG. 1, and then the pressing cylinder 21 is brought into a pressurized state as shown in FIG. Then, the frame 11 is moved rightward by extending the rod, and the stopper 12 attached to the frame 11 is pressed against the adjustment rod 13.
At this time, the projecting amounts of the pair of adjusting rods 13 and 13 are made equal, and the gluing roll 5 that has moved with respect to the lower roll 2 whose position is fixed by the machine frame 1 is
As shown in FIG. 2, the distance is set to a distance.

Hereafter, the lower roll 2 and the sizing roll 5
During the parallel adjustment and the operation of the single facer after the parallel adjustment, the pressurizing cylinder 21 is kept in the pressurized state, and the state in which the stopper 12 is pressed against the adjusting rod 13 is maintained. .

In the case where the lower roll 2 and the sizing roll 5 in such a state are in a non-parallel state as shown in FIG. This will be described below.

A control signal for rotating the lower roll 2 at a higher speed than the sizing roll 5 is transmitted from the control unit 40 to the motors 25 and 2.
6 and rotate the lower roll 2 and the sizing roll 5 (for example, the lower roll 2 is 18 rpm, the sizing roll 5 is 15 rpm
m)

In the state shown in FIG. 5 (a), a drive signal is supplied from the control unit 40 to the pair of motors 19, 19 by a switch (not shown) so that the pair of adjustment rods 13,
13 is moved back in the direction of the lower roll 2 by retreating the glue rolls 13 by equal distances.
As shown in (b), the sizing roll 5 comes into contact with the lower roll 2. When the sizing roll 5 comes into contact with the lower roll 2 rotating at a higher speed, a change in the rotation speed of the sizing roll 5 having a smaller motor capacity is obtained by the pulse transmitter 26a. Is in contact with the lower roll 2. Based on this contact signal,
By providing a control signal from the control unit 40 to the pair of motors 19, 19, the pair of motors 19, 19 are stopped, and then the pair of adjustment rods 13, 13 are controlled to be advanced by a fixed distance at a constant distance. 5 (c) is obtained.

As shown in FIG. 5 (a), if the subsequent parallel adjustment is performed in a state where the sizing roll 5 is relatively far away from the lower roll 2, it is impossible to apply these moving mechanisms. 5C, there is a possibility that the parallel adjustment cannot be performed accurately. Therefore, as shown in FIG. 5C, a preliminary adjustment for keeping the glued roll 5 close to the lower roll 2 is performed. The parallelism between the lower roll 2 and the sizing roll 5 in each of FIGS. 5A and 5C is the same. Therefore, this preliminary adjustment is not always necessary.

FIG. 5 shows the adjustment after the preliminary adjustment.
Next, description will be made with reference to (d) to (g).

From the state shown in FIG. 5C, a control signal is supplied from the control unit 40 to only one of the motors 19 (the motor 19 corresponding to the right side in the example of FIG. 5D). Until a contact signal is obtained, one side (right side) of the sizing roll 5 is brought closer to the lower tier roll 2 to obtain the state shown in FIG. At this time, by a corresponding one of the encoder 19a, the moving distance alpha ₁ of the one glue application roll 5 (right) is obtained, Figure 5 corresponding while the lower glue application roll 5 in the state of (c) Roll 2 It becomes clear that the distance α _{1 was} away from.

Next, as shown in FIG. 5 (e), in order to make one of the sizing rolls 5 away from the lower roll 2 by a distance a ₁ , the corresponding one of the motors 19 has a distance a _1.
Is provided. Note that the distance a ₁ is preferably small, and may be equal to the distance α ₁ .

Next, the control unit 40 is connected to the other motor 19 only.
A further control signal is given, and the other side (left side) of the sizing roll 5 is made to approach the lower roll 2 until a contact signal is obtained in the same manner as described above to obtain the state shown in FIG. At this time, by a corresponding other of the encoder 19a, the moving distance beta ₁ of the other glue application roll 5 (left) is obtained, Figure 5 corresponding the other lower roll 2 of glue application roll 5 in the state of (c) From the distance β ₁ .

Next, in order to be in a state where the other glue roll 5 from the lower roll 2 distance a ₁ away as shown in FIG. 5 (g), the distance a ₁ to the corresponding other motor 19
Is provided.

By separating both of the sizing rolls 5 from the lower roll 2 by the distance a ₁ as described above, the sizing roll 5 becomes parallel to the lower roll 2.

If it is desired to further improve the parallelism between the lower roll 2 and the gluing roll 5, the following adjustment may be made.

In FIGS. 5E and 5G, the sizing roll 5
For one and although each to the motor 19, 19 corresponding to the other to give a reverse drive signal corresponding to the distance a _1, which is not actually in a state both with exactly the distance a ₁ km of glue application roll 5 There can be.

Such a phenomenon occurs when the parallel deviation between the lower roll 2 and the sizing roll 5 is equal to or larger than a predetermined range before the parallel adjustment. This can be particularly caused by movement. Therefore, the distances α ₁ , β as shown in FIG.
₁ and the allowable error value C, the control unit 40 sets | α ₁ −β
₁ | ≦ C or | α ₁ −β ₁ |> C

If a result of | α ₁ −β ₁ | ≦ C is obtained in this determination, no unreasonable movement occurs in the moving mechanism of the gluing roll 5 during the parallel adjustment, and FIG. one and the other of both of the glue roll 5 as shown in, so no problem seeing that from the lower rolls 2 distance a ₁ km, parallel adjustment at the stage shown in FIG. 5 (g) is completed.

However, if the result of | α ₁ −β ₁ |> C is obtained, at the stage of FIG. There is a possibility that it is preferable to further improve the accuracy by performing the parallel adjustment without leaving the distance a ₁ .

Here, at the stage of FIG. 5 (g), it is assumed that the state is actually as shown in FIG. 6 (a), and the same parallel adjustment as described with reference to FIG. 5 is performed in FIG. That is, FIG. 6 (a) corresponds to FIG. 5 (c), and FIGS. 6 (b), (c), (d), and (e) similarly show FIGS. 5 (d), (e), This is a state corresponding to (f) and (g).

Hereinafter, the parallel adjustment based on FIG. 6 will be briefly described. As shown in FIG. 6 (b), one side of the sizing roll 5 is moved from the state of FIG. 6 (a) to make contact with the lower roll 2, and thereafter, as shown in FIG.
Is separated from the lower roll 2 by a distance a ₂ . Next, as shown in FIG. 6D, the other of the sizing rolls 5 is moved to contact the lower roll 2 and then the other of the sizing rolls 5 is connected to the lower tier as shown in FIG. It is separated from the roll 2 by a distance a ₂ . FIG. 6E obtained by such parallel adjustment.
The accuracy in the parallel state between the lower roll 2 and the sizing roll 5 is even better than the state in FIG.

| Α _{2, which} is the same as the previous time, by the distances α ₂ and β ₂ and the allowable error value C as shown in FIG. 6A obtained by the adjustments of FIGS. 6B and 6D, respectively. −β ₂
If | is compared with C and the parallel adjustment is repeated thereafter, the accuracy of the parallelism will improve. Since the value of | α ₂ −β ₂ | is a value after performing the parallel adjustment once, naturally | α ₂ −β ₂ |
₁ −β ₁ |.

In the above embodiment, in either case of FIGS. 5 and 6, one of the right sides of the sizing roll 5 is moved first at the time of the parallel adjustment. It may be adjusted.

In the operation of the single facer, the gap between the lower roll 2 and the glue roll 5 is adjusted to correspond to the thickness of the core paper Wc passed between these rolls 2 and 5. This gap adjustment is performed by driving the pair of motors 19 equally and moving the glued rolls 5 after the parallel adjustment while maintaining the parallelism.

Note that the distances a ₁ and a ₂ may be equal to each other, and if these distances a ₁ and a ₂ are set to values corresponding to the thickness of the core paper Wc, the lower roll 2 and the adhesive It is not necessary to adjust the gap with the attaching roll 5.

Although the above-described embodiment is applied to a single facer, the method for adjusting the parallelism between rolls according to the present invention is as follows.
It can be applied to any other parallel adjustment between rolls.

[0042]

As described above in detail, according to the inter-roll parallel adjustment method of the present invention, one side of the second roll placed at a position distant from the first roll is brought into contact with the first roll. After returning a certain distance after that, and also returning the other side by a certain distance, both sides of the second roll are placed at the same distance from the first roll. Therefore, a sensor for detecting the position of the second roll with respect to the first roll is provided. There is an advantage that the parallel adjustment can be performed easily and accurately without being provided on the side of the roll, and the quality of the processed product can be improved at an economical cost in the processing apparatus.

[Brief description of the drawings]

FIG. 1 is a side view of a main configuration of a single facer.

FIG. 2 is a developed plan view of the above.

FIG. 3 is a detailed view of an adjustment rod.

FIG. 4 is a schematic block diagram of a control circuit.

FIG. 5 is an explanatory view of parallel adjustment of a sizing roll to a lower roll.

FIG. 6 is an explanatory view of parallel adjustment of a sizing roll to a lower roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine frame 2 Lower roll 3 Upper roll 4 Glue tank 5 Glue roll 6 Doctor roll 7 Crimping means 8 Endless belt 10 Glue unit 11 Frame 12 Stopper 13 Adjustment rod 19 Motor 19a Encoder 20 Movement adjustment mechanism 21 Pressure cylinder 22 Pin 24 Axis 25, 26 Motor 25a, 26a Pulse generator

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Ikuo Yoshimoto 2-5-25 Umeda, Kita-ku, Osaka City Inside Rengo Co., Ltd. Head Office (72) Inventor Nobuhiro Ishii 2--15-28 Mitejima, Nishiyodogawa-ku, Osaka-shi Inside Hamada Printing Machinery Co., Ltd. (72) Eiji Konuma, Inventor 2--15-28 Moundoshima, Nishiyodogawa-ku, Osaka-shi Inside Hamada Printing Machinery Co., Ltd. (72) Hidenori Tanabe 2-15-28, Mitejima, Nishiyodogawa-ku, Osaka-shi F-term in Hamada Printing Machine Co., Ltd. (reference) 3E078 BB02 CC06 CC15X CC45 CD10

Claims (2)

[Claims] 1. A method for adjusting a second roll in parallel with a first roll, comprising: a first step of separating the second roll from the first roll; and fixing one side of the second roll. A second step of bringing the other side into contact with the first roll and then leaving a fixed distance, and fixing the other side of the second roll and bringing one side into contact with the first roll and leaving the same constant distance as above A method for adjusting parallelism between rolls, comprising adjusting the parallelism between rolls by the third step. 2. When the degree of parallelism of the second roll with respect to the first roll is out of an allowable range, the parallelism between the rolls is adjusted by repeating the first to third steps according to claim 1. The method for adjusting the parallelism between rolls according to claim 1.