JPS6137654A - Web winder - Google Patents

Abstract

PURPOSE:To suppress fluctuation of winding density and to stabilize the hardness and dencity of winding roll uniformly by producing predetermined speed difference in the rotation of plural winder drum rolls upon fluctuation of the winding density. CONSTITUTION:The acceleration/deceleration pattern of the winding speed of first winder drum roll to be set in a setter 64 is varied to coordinate the rotary speeds of first winder drum roll and winding roll at anytime thus to make the winding density constant and to eliminate the fluctuation of the rewinding tensile force. During acceleration/deceleration of winding roll, second winder drum roll motor speed control circuit 73 and second winder drum roll motor current control circuit 70 will control the rotary speed of second winder drum roll 39 to produce predetermined speed difference against the rotary speed of first winder drum roll 38 thus to suppress fluctuation of the winding density.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention particularly relates to a web winding device characterized by a control means when winding a web for paper making or the like.

[Conventional technology]

It is a well-known fact that it is important for quality control to monitor the hardness of one take-up roll in a web take-up machine. FIG. 6 shows the configuration of a conventional web winding machine, in which 1 is a rewind roll, and a web 12 of paper or the like wound around this rewind roll 1 is a paper p-runo 3. The passageway is regulated by the two rotating rolls 15 and 16 and the first winder drum roll 7 which pass through the slots 14, leading to the winding roll 18, and being wound up on the winding roll 18. Here, the first winder drum roll 17. The three rolls, the second winder drum roll 9 and the rider roll 2o, which are close to the first winder drum roll 17, are arranged so that their curved portions are in contact with the take-up multi-roll 18. It is. In such a web winding machine.

As mentioned above, in order to compensate for the hardness of the winding multi-roll 18, the operating tension, the ratio of the driving torque of the first and second winder drum rolls 1'; Roll 17.19 and take-up roll 1
The nip pressure applied by the rider roll 20 to the contact portion of the roller 8 is narrowed down. Namely.

Increasing the number of these three elements increases the winding hardness of the web 12.

Therefore, in recent years, various devices have been developed in which the above-mentioned trifold is made to correspond to the winding diameter of the web 12 on the winding roll 18, and is automatically assisted by the microcombeater. Figure 2 mainly shows the configuration of the control parts of such a device, and shows the unwinding tension, nip pressure, tensile torque load sharing ratio and one-winding ratio corresponding to the winding diameter of the multi-roll 18 for one winding. The operator sets each of the winding 1c speeds corresponding to the winding length of the multi-roll J8 on the setting devices 21 to 24. The data set in these setting devices 21 to 24 are stored in the rewinding tension adjustment system 25. Rider roll load adjustment system 26. Second winder drum roll motor torque adjustment system (represented as "second drum motor torque adjustment system" in the figure) 27. The first winder drum roll motor torque adjustment system (in the figure [first
Each of these adjustment systems 25 to 28 adjusts the winding tension T and Nino pressure N that are appropriate at that time, depending on the input data.

Rotational speed ω2 of the second winder drum roll 19. 1st
The rotational speed ω of the winder drum roll 17 is calculated, and the web winding machine is assisted, and the calculated data is sent to the winding multi-roller setter 29. and,
This multi-turn slag sensor 29 leaks inputs T and N.

ω7. The winding hardness is calculated according to each data of ω1 and output as display data.

[Problem that the invention seeks to solve]

In the case of the above-mentioned 9 web winding machines, the unwinding tension, nip pressure, tension torque load sharing ratio and winding speed against the winding diameter of the 7 winding multiple rolls 18 are determined. When setting each characteristic curve in the setting devices 21 to 24.

The operator judges each condition from the appearance of the rolled up product and makes settings according to the judgment results.

Therefore, the winding density ρ with respect to the winding diameter shown in FIG. 8, the rotational speed ω of the first winder drum roll 7,
As shown in the graph, in the part where the diameter of one winding is small.

The rotational speed ω of the take-up roll 18 and the above ω.

If the winding density becomes extremely high due to reasons such as not coordinating with the

It is difficult to judge based on the appearance of the product, and operators require experience and a high level of skill.

It was never possible to obtain the optimum winding condition.

This invention was made in view of the above-mentioned circumstances.
It is an object of the present invention to provide a web winding device that detects information such as the winding density inside the winding roll that cannot be directly detected from the outside, and that can always obtain an appropriate state of the number of windings. shall be.

[Means and effects for solving the problems] This invention has the following features:
For example, in a web winding device having two winder drum rolls, the characteristics of the acceleration/deceleration rotation of the first winder drum roll with respect to the diameter of the multiple winding rolls at the time of acceleration/deceleration rotation of the first winder drum roll are changed as appropriate.

The hardness of the first take-up roll is set so that a specific difference is created between the rotation speeds of the first and second winder drum rolls when the rotation speed of the take-up roll is not constant during the acceleration/deceleration or other times; This makes the density uniform and stable.

〔Example〕

An embodiment of the present invention will be described with reference to the following. Fig. 1 shows the structure of the winding device of the present invention, in which 3 is a winding roll, 2 is operated and both ends are pressed against the core of the roll 31 with a small number of windings. A core chuck 32 is provided. This core chuck 32 rotates integrally with one take-up roll 3, and there is a reflective tape 3 around the shaft end on the operation side.
3 can be added in one place Jl).

The rotation line of this reflective tape 33 is detected by the proximity switch 34, and the detection signal of this proximity switch 34 is amplified as the rotation speed data of 2 rolls and 3 rolls through an amplifier 35, and then 1 roll. It is sent to the hardness control calculator 36. This winding hardness control calculator 36 performs the calculation □ based on the data input of hN in order to control the winding hardness of the web in a few rolls 3 per roll.
It outputs each control data according to this calculation result.
As one of the control data, data is also output to the rider roll pressure controller 37. The rider roll pressure controller 37 applies pressure to the take-up roll 3 of the rider roll 40 in order to adjust the nip pressure to the first and second winder drum rolls 3B and 39 in accordance with input data. The output signal is the rider roll 4
It is sent to the rider roll pressure cylinder 4 which pressurizes 0, and is also sent to the rider roll pressure cylinder pressure detector 42.

The rider roll pressurizing cylinder pressure detector 42 detects the pressure at which the rider roll pressurizing cylinder 41 drives the rider roll 40, that is, the nip pressure, based on the signal input from the rider roll pressurizing abrasive device 37. The hardness control computer 36 is sent to perform feedback control.

Calculation for winding hardness control @36 is also available. Thyristor power source 45 for each DC drive motor 43, 44 that drives the rotation of the first and second winder drum rolls 3B, 39.
It also outputs a signal to control the power supply voltage of 46. In particular, the drive motor 43 for the first winder drum roll 38 is connected to a No. 9 generator (rPLGJ in the figure) 42, and this No. 9 generator 47 is connected to the rotation of the drive motor 43. At the same time, the mother pulse is sent to the Cyrisk power supply 45. Also, on the operating sides of the first and second winder drum rolls 3g and 39, high-output type winder generators 4g are installed, respectively.
, 49 can be attached, roll 3g, 39
Occurs with the rotation of. -e Lus are both sent to the winding hardness control calculator 36. Rolling hardness control calculator 36
Furthermore, a detection signal is input from the load cell 5 for detecting the unwinding tension T of the web 50 sent to the first winder drum roll 38. And the one-roll hardness control calculator 36 has more information. CRT s outside
2 h key? - A card 53 and a printer 54 are connected.

Of these, the CRT 52 and printer 54 are only for displaying the status of each button, and the operator operates the keypad 53 according to the displayed contents to specify settings, changes, etc. of collateral contents. .

The circuit configuration inside the winding hardness control calculator 36 will be explained with reference to FIG. 2 that follows. 61 to 64 are setting devices, respectively, and these setting devices 61 to 64 indicate the unwinding tension, nip pressure, tensile torque load sharing ratio for the winding diameter of one winding roll 31, and the winding length of the roll 31 with a small number of windings. Respective characteristic curves of winding number and speed versus speed are established. Of these, the rewind tension setting value data TS set in the setting device 6 and the nip pressure setting value data NS set in the setting device 62 are each one of the rewind tension adjustment system 65. Rider roll load adjustment system 66
sent to. These adjustment systems 6s, 6ts
The tension T of the web 50 and the load amount of the rider roll 40 are adjusted according to the set value data 'l's and Ns inputted, and the data of the unwinding tension T & Nitsuzo pressure N after the adjustment are both 2 turns. It is input to a roll processor 67. [The winding increase speed setting value data v, s set in the winding setting device 64 are the first winding shim roll motor speed adjustment system (indicated as "first drum motor speed adjustment system" in the figure) 68 and is sent to Alco 9 Rhythm 69 for the winding hardness system. The first winder drum roll motor speed regulation system 68 adjusts the speed of the first winder drum roll 38 according to the input data V,S.
The rotation speed after adjustment is ω
, is sent to the above-mentioned roll ID roll processor 67, and the data of the electric current flowing to the drive motor 43 at the rotation speed of 08 is sent to the second winder drum roll motor current control circuit (in the figure, the data of the electric current flowing to the drive motor 43 is The motor is sent to the flow control circuit (70). This second winder drum roll motor current control subcircuit 70 also includes: From the setting device 63 to the first and second winder drum rolls 3
The data Its of the tension torque load sharing ratio which is the ratio of the rotational speed of 8.39 is input, and the current value signal determined by these two data It is input to a motor characteristic circuit (denoted as "second drum motor '1 circuit" in the figure) 72. and.

Also in this second winder roll motor characteristic circuit 72. A switch 74 interlocked with the switch 7 from the second winder drum roll motor speed side subcircuit (represented as "second drum motor speed control subcircuit" in the figure) 73
The motor speed side image signal is inputted through the motor speed side image signal, and the second winder drum roll 3
The rotational speed data ω of 9 is sent to the above-mentioned small number of rolls Zorose +j67. Take-up roll Procera”)-6
7 is data T from the 1 rewind tension adjustment system 65;
Data N from rider roll load adjustment stem 66
, data ω1 from the first winder drum roll motor speed adjustment system 68, data ω from the second winder drum roll motor characteristic circuit 72, and the winding roll 310 angular velocity data ωR are used to control the winding hardness. Among these data, ω is input to the button algorithm 69.

and ωR are sent to the winding density calculation circuit 75.

This winding density calculation circuit 75 calculates the number of windings ρ for opening one winding part roll 3 from the two input data, and the data of the calculation result is used in the winding hardness setting algorithm 0 rhythm 69 and to the outside of these circuits. This winding hardness control al prism 69 receives T, N, ω1. ω2. With ω.

ρ inputted from the winding number/low density calculation circuit 75, the setting device 6
By each data of vI8 input from 4, the setting device 6
4, the data of the first winder drum roll motor speed control (
The rotational speed set value data V, 8 of the drive motor 44 of the second winder drum roll 39 is output to the circuit 73, and the switches 71 and 74 are opened and closed.

Next, the operation of the above embodiment will be explained. First, when measuring the length of the first winder drum roll 31 as a reference in the setting device 64, this is the length of the first winder drum roll 3.
A small number of output-type noggle screw generators 48 attached to the operating side of the winder 8 send one turn of the pulse signal generated as the first winder drum roll 38 rotates to the hardness sterilization calculator S.
6 is counted by a counter provided therein, and the drum diameter of the first winder drum roll 38 and the knobs generator 48 are added to the counted value by the counter provided inside the first winder drum roll 3.
It is obtained by multiplying the number of pulses generated per revolution of 8 by the number of pulses generated per revolution.

Next, when measuring the winding diameter of the winding roll 3, which serves as a reference in the setting devices 61 to 63, the measuring machine J6 for controlling the hardness of one roll is integrated with the winding roll 31 by the proximity switch 34. It is detected that the reflective tape 33 rotates once, and while the reflective tape 33 rotates once.

By calculating the winding length mentioned in the previous E.

The outer circumference length of the take-up flow 3 is known. 7 Therefore,
The winding diameter of the take-up roll 31 is calculated by dividing this outer circumferential length by the pi ratio π.

Next, when detecting the rotational speed of the winding part roll 31, the time required for one rotation of the reflective tape 33 attached to the core chuck 32 is determined by the proximity switch 34 for winding hardness control calculation method: j6. To measure time. Since this time measurement result becomes the period of the winding roll 3, the rotational speed 'ff of the 1 winding roll 3 is calculated by calculating the reciprocal of this period.

When detecting the rotational speed of the first and second winder drum rolls 38 and 39, as the respective rolls 38 and 39 rotate, output-type noggle generators 48 and 49 provided on the operation side of the rolls are activated. The generated pulse signal is 5
It is obtained by detecting the winding hardness control calculator 36 and performing arithmetic processing.

The above variables can be expressed as follows. however.

D(k) Diameter of second layer winding wheel 3 (sm) L
(k): Winding length of the second layer [see] t(k): Period of the second layer [see] ωR(k): Angular velocity of the winding section roll 3 of the kth layer [
: l/5ec) ωt(k): Angular velocity (1/sec) of the first winder drum roll 38 of the second layer ωt(k): Angular velocity of the second winder drum roll 39 of the second layer (17sec) ) Dd: #, 1 and 2nd winder drum roll 3
8゜39 diameter (same diameter) [Same diameter] Q: Number of pulses nl (k) per revolution of the pulse generator 48゜49 attached to the first and second winder drum rolls 38゜39, 1.n2(k): When the number of pulses from each pulse generator 48.49 is taken to generate a layer.

L(k)=+r−Ddsnl(k)/Q=(υD(
k)=Dd-ni(k)/Q ・・・・・・・・・・・・
・・・・・・■)ωR(k)=2π/1(k) ・・・
・・・・・・・・・・・・・・・・・・(3) ω+ (
k)=g・nx(k)/(Q・1(k))=i4ω2(
k)-π-nz(k,)/(Q-t(k)) ・---
--<5).

And wind it up! To detect lll density.

The paper thickness of each layer of the web taken up by the take-up υ roll 3, for example, paper, can be determined from the diameter of the take-up roll, and if the basis weight of the paper is given as information, it can be determined from the quintic equation.

however.

h(k): Paper thickness of the second layer [μm] m: Basis weight [y/m2] ρ(k): Density of the second layer (U/mJ, h(k)=CD(k)− D(k −1) )/z
・・・・・・・・・(6)ρ(k)=m/h(k)
・・・・・・・・・・・・・・・・・・・・・・・・
(7) Therefore, from one or more equations, the equation ρ(k) ccl/(change in take-up roll diameter) is obtained.

When the cylindrical take-up roll 3 rotates, if the density distribution of the roll 3 is not uniform, the circumferential speed will fluctuate greatly and the unwinding tension T will fluctuate greatly. and.

In the above equation (8), the influence degree ω on the fluctuation of the winding density
This is the ratio with R. Therefore, in order to prevent sudden changes in the one-winding density, it is sufficient to ensure that the above-mentioned ω and ω are always in a coordinated state. From this, depending on the above embodiment.

The first winder drum roll 38 to be set on the setting device 64
The accelerating range of the speed of the winding section is changed.

In addition, the force and the rotational speed ω of the winding roll 3 are h1
and the model number of the ratio of the rotational speeds ω1 and ω of the second winder drum rolls 3B and 39.

It is particularly heavily affected during acceleration and deceleration periods. Once upon a time.

2nd CI'7 (with respect to the second winder drum roll 39, during the acceleration/deceleration period and until the circumferential speed ωR of the winding port 31 becomes stable, the speed is maintained constant with respect to the first winder drum roll 38). So that.

Second winder drum roll motor speed control circuit 7
3. The winder drum roll motor current control circuit 70 of ffL2 also controls the one-rotation speed ω2.

FIG. 3 shows the first winder P as described in the above embodiment.
The rotational speed ω when the setting device 64 is set to change the acceleration/deceleration/turn of the rotational speed of the ram roll 38.
, and the winding increase density ρ were actually measured, and it is found that the one winding density ρ does not change abruptly and is uniform with respect to one rotational speed ω.

FIG. 4 and FIG. 5 are for the above embodiment.

CRT 52, f connected to the winding hardness open side calculator 36
Each adjustment system 65 is connected to an external output device such as a lifter 54.
, 66, 68 and the data T, N, ω1, ω2 and 1 obtained from the second winder drum roll motor characteristic circuit 72.
This is a display of the winding increase density data ρ obtained from the winding number density calculation circuit 75. In this way.

Since it is possible to observe the increase in winding density in each state, it is very advantageous in terms of management in the one winding nine system (2).

In addition, in order to increase the winding force density in one roll with a large number of turns and increase the winding hardness, and to make a stable roll with a large number of turns, a thinner web should be used. Advantageously, the use of a thinner web in the above embodiments provides a more stable winding with a uniform density distribution.

〔Effect of the invention〕

As described above, according to the present invention, it is possible not only to obtain rolls with a high quality and a large number of windings with a uniform winding density and no unevenness depending on the situation, but also to obtain various information related to the winding density. Since it is possible to display and store information, it is possible to provide a web winding device that is extremely advantageous in terms of quality control.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention,
Fig. 1 is a diagram showing the configuration of the device, Fig. 2 is a block diagram showing the circuit configuration of the sieve control section, and Figs. 3 to 5 are graphs showing each recognizability curve corresponding to the state of the take-up roll. , FIG. 6 is a diagram showing the configuration of a conventional web winding machine, FIG. 7 is a block diagram showing the circuit configuration of the restraining section in FIG. 6, and FIG. 8 is a graph showing the damage curve in FIG. 6. It is. 11... Rewind roll, ノ2I50... Web. 13... Vapor roll, 14... Slitter, J5゜16... Rotating roll, 17.38... First winder drum roll, 18.31... Roll with many turns. 19.39...Second winder drum p-rule. 20.40... Rider roll, 21-24, 61-6
4... Setting device, 25.65... Rewind tension piece system, 26.66... Rider roll load adjustment system, 27... Second winder drum roll motor torque adjustment system f M&28, 68...first winder drum roll motor speed i/fj adjustment system, 29.6
7... Winding @ take-up roll processor, 32... Core chuck, 33... Reflection chi f. 34... Proximity switch, 35... Amplifier, 36...
- Rolling hardness collateral calculator, 37... Rider roll pressure accessory, 41... Rider roll pressure cylinder. 42... Rider roll pressure cylinder pressure detector. 43.44... Drive motor, 45.46... Thyristor power supply, 4y-49... Pulse generator. 5...Load cell, 52...CRT&ss...
·Key? 54...Printer, 69...Rolling hardness algorithm h 70...Second winder drum roll motor current side circuit, 77.74...Switch, 72...Second winder Drum roll motor characteristic circuit 73... Second winder drum roll motor speed control circuit 775... Winding number multidensity calculation circuit. Applicant's sub-agent Patent attorney Takehiko Suzue Figure 4 Diameter of flea holder (mm) Figure 5 (mm)

Claims (1)

[Claims] In a web winding device having a winding roll for winding a web and a plurality of winder drum rolls driven in circumferential contact with the winding roll, a detection means for detecting an outer diameter of the winding roll over time; a calculating means for calculating the winding density of the winding roll from the detection contents of the means; and a calculating means for calculating the winding density of the winding roll from the detection contents of the winding drum roller, and a calculating means for calculating the winding density of the winding roll so that the winding density calculated by the calculating means remains constant during acceleration/deceleration rotation of the winding roll. a setting means for adjusting and setting the acceleration/deceleration time of the winder; and a control means for suppressing fluctuations in the winding density by creating a fixed speed difference in the rotation of the plurality of winder drum rolls when the winding density fluctuates. A web winding device characterized by: