JPS6228058B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an automated winder delivery device, for example for a winder in a paper machine. Automation technology for winding machines has developed and become more diverse in recent years, but this is due to the fact that it has become difficult to secure on-site operators, reducing the burden on operators, and reducing product variations due to individual differences among operators. These include prevention of accidents and improvement of operational efficiency. In the case of winding machines where the band material is weak in strength, such as paper, differences in brands,
Due to the wide variety of winding diameters and slitting widths, it was difficult to establish a consistent operating system, and operators had no choice but to rely entirely on their five senses. In particular, paper machines and winders required a large number of operators to send the winding rolls to the next process and prepare for the next winding operation (frame change work). Figure 1 shows the winding method of the winding roll in a paper machine/winding machine.
The paper 12 fed out is wound up via a winding drum 13 and becomes a winding roll 14. Usually, several take-up rolls 14 are made from the delivery roll 11. 15 is a pressure roll that presses the winding roll 4, and 16 is a paper roll. When the winding roll 14 is wound up to a predetermined length, the winding roll 14 is pushed out onto the table 18 by the kick-out arm 17. The table 18 has a slight downward slope, and the take-up roll 14 rolls down on the table 18. Then, it reaches the stopper 19 and stops. When the take-up roll 14 rolls down on the table 18, the delivery roll 11 is rotated by being pulled by the paper 12 by the rolling distance.
At this time, if the speed at which the take-up roll 14 rolls down is fast, the unwind roll 11 is suddenly pulled by the paper and rotates, and even if the take-up roll 14 stops at the stopper 19, it will continue to rotate for a while due to inertia. continues, the winding drum 13 and the delivery roll 1
The paper will sag during 1. This state is shown in FIG. 2a. Normally, when the winding roll 14 rolls down onto the table 18 by the edge removal arm 17, tension is applied on the sending roll 11 side to prevent the winding roll 14 from rolling down suddenly through the paper 12. In other words, the delivery roll 11 performs tension control. However, if the tension on the delivery roll side is made stronger than the rolling force of the take-up roll 14, the take-up roll 14 will stop on the table 18 before reaching the stopper 19 position. Once on table 18,
When the take-up roll 14 stops, the static friction is large, and even if the tension on the sending side is weakened (even if it becomes zero), it may not start rolling again. This state is shown in FIG. 2b. The winding roll 14 has different winding lengths, that is, winding diameters, and therefore has different weights, and the operator visually observes the feed of the winding roll 14 as it rolls down on the table 18, and adjusts the winding roll to the optimum speed. The tension setting of the delivery roll 11 was changed. For this reason, even if automation of other parts of the winding machine becomes possible and labor-saving progresses, it is still difficult to automate the operation of this part. The present invention has been made based on the above reasons, and an object of the present invention is to provide a winder delivery device that automatically sends out a winding roll to the next process. The present invention will be explained below with reference to the drawings. FIG. 3 shows an embodiment of the present invention. Items with the same reference numerals as those in FIG. 22 is a pulse oscillator directly connected to the paper roll 16. 23 is a contact that operates when the kick-out arm 17 operates, 24 is a memory circuit, 25 is a function generator, and 26 is an arithmetic circuit. The present invention is configured as described above and operates as follows. That is, first, when winding is completed, the kick-out arm 17 operates, and when the kick-out arm 17 operates, the winding diameter of the take-up roll 14 is set in the memory circuit 24 by the contact 23. The output of the memory circuit 24, ie, the diameter φ of the take-up roll, is input to a function generator 25 and an arithmetic circuit 26. Next, kick out arm 17
operates, and when the take-up roll 14 rolls down on the table 18, the pulse oscillator 22 directly connected to the paper roll 16 and the take-up roll calculate the rolling length l by the calculation circuit 26, and the function generator 25 is input. The function generator 25 uses φ, l, and θ as parameters along with the slope angle θ of the table 18, calculates the weight of the delivery roll, the rolling force, and calculates and outputs the pulling tension T on the delivery side. This calculation of the tensile tension T is based on the state before being kicked out, and calculates and outputs the tensile tension T such that the force F at which the take-up roll 14 rolls down is equal to the tensile tension T at the rolling down length l point. . FIG. 4 shows the memory circuit 24, in which the signal of the winding diameter detector 21 becomes one input of the amplifier 31,
If the contact 23 is closed, the signal is transmitted to the integrator 32, and the output signal of the integrator 32 becomes the other input of the amplifier 31. In other words, if a deviation occurs between the signal value of the winding diameter detector 21 and the output value of the integrator 32, the integrator 3
2 operates so that the winding diameter detector signal and the output value of the integrator 32 are always equivalent. When the contact 23 becomes "open", the input of the integrator 32 becomes zero,
The output of the integrator 32 will maintain its previous state (value). The output of the integrator 32 is multiplied by 1/2 by a multiplier 33 and outputs a signal r. FIG. 5 is a circuit diagram of the function generator 25 and an explanatory diagram of its construction principle. In FIG. 1A, consider a situation in which the take-up roll 14 is placed on the table 18, and the roll weight (rolling force) and the force pulled by the paper 12 are balanced. ●Roll diameter is φ (radius γ=φ/2) ●Table slope is θ ●Roll weight is Mg (Mg=π・γ ² ×ρ×L×
g, L = roll length, ρ = density) ●The distance (rolling length) from the reference point 0 to the point where the roll touches the table is l (Figure 0-
0') ● The narrow angle between the paper and the table is β ● The length between 0' and 0'' in the figure is φ' ● The force in the direction perpendicular to the line 0' and 0'' with respect to the perpendicular is T'. The condition where the force F that tries to roll and the tension T that is balanced is considered as a moment with the roll contact point 0' as a reference, and the moment of rolling force = F x γ = Mgsinθ x γ = π・γ ²・ρ× L・g・γsinθ =kγ ³ sinθ(k=π・ρ・L・g) Moment of tensile force = φ′×T′=φ′×Tcosβ/2 φ′=2×lsinβ/2 Therefore, roll In order for it to stand still, the following (1) is required.
The formula must hold true. k・γ ³・sinθ=2・T・lsinβ/2・cosβ/2 =T・lsinβ……(1) Here,

【formula】

From [Formula] sinβ=2sinβ/2×cosβ/2=2γl/γ ² +l
² , and equation (1) is k・γ ³・sinθ=T・l・2γl/γ ² +l ² ………(
2) becomes. Calculating T from this, T=1/2・k・γ ²・[1+(γ/l) ² ]・sinθ=k′・γ ²・[1+(γ/l) ² ]……(3 ) (However, k'=1/2・ρ・π・L・g・sinθ) Therefore, the function generator 25 is constructed as shown in FIG. That is, 41 is a divider, 42, 43, 4
5 represents a multiplier, and 44 represents an adder, in which a divider 41 calculates γ/l and a multiplier 42 calculates (γ/l) ² for the inputs γ and l. The input γ is calculated into γ ² by the multiplier 43. On the other hand, 1 is added to the output (γ/l) ² of the multiplier 42 by the adder 44, and the output becomes 1+(γ/l) ² . In the multiplier 45, the output γ ² of the multiplier 43 and the output 1 of the adder 44
+(γ/l) By multiplying by ² , γ ² [1+(γ/
l) ² ], the output is multiplied by k' by the multiplier 46, the desired function T is calculated, and the tension setting value at the time of roll kicking is output. The figure c is this tension T
However, in the relationship diagram with the rolling length l, it can be seen that the tension value T becomes smaller as the rolling length l becomes longer. Figure 6 shows the rolling length l from the feeding length L.
FIG. 2 is a circuit diagram of an arithmetic circuit 26 that calculates , and an explanatory diagram of its configuration principle. In figure a, ● Roll diameter is φ (radius γ = φ/2) ● Thread from reference point 0 to the point where roll 4 rolls on the table and touches the ground is l (Figure 0-
0') ●The narrow angle between the paper and the table is β. ●The amount of feed when the rolling length is l is L, then the following formula holds true at the reference point 0'. 2πγ+L=2×l+2πγ(π+β)/2π...
… (4) 2l−L=γ(π−β) 2l−L/γ=(π−β) where cosβ=γ ² −l ² /γ ² +l ² , so cos2l−L/γ=cos(π -β)=-cosβ=l ² -γ ² /γ ² -l ² cos2l-L/γ=l ² -γ ² /γ ² +l ² cos ^-1 l ² -γ ² /γ ² +l ² =2l- L/
γ 2l−L=γ・cos ⁻¹ l ² −γ ² /γ ² +l ² …
...It can be expressed as (5). In other words, when L=0, l=0 L from β=π
≫When γ, since β≒0, l=πγ/2+L/2. Based on the above, the arithmetic circuit 26 is configured as shown in FIG. That is, inputs γ, l are multiplier 5
1, 52 to calculate γ ² and l ² , adder 53,
The subtracter 54 calculates γ ² +l ² and l ² −γ ² . The divider 55 divides γ ² +l ² by l ² −γ ² to calculate l ² −γ ² /l ² +γ ² , and the function unit 56
Accordingly, (cos ^-1 x) output y = cos ^-1 l ² - γ ² /l ² + γ ² is output. The output of the function unit 56 is converted to γ×cos ⁻¹ by the multiplier 57.
Calculate l ² −γ ² /γ ² +l ² , that is, 2l−L. From this output, the feed length L is calculated by the adder 58 and multiplied by 1/2 by the multiplier 59 to obtain the rolling length l, which becomes the aforementioned input l. In addition, in FIG. 1B, the calculation circuit for the delivery length L [m] indicated by the dotted line is constructed as follows. That is, now the number of pulses of the pulse oscillator 22 is PPulse/REV, the diameter of the paper roll to which the pulse oscillator 22 is attached is D [m], and the unit length is 1.
[cm] In order to set the number of pulses when sending out 1 pulse, the frequency division ratio is x, 1 [m] / π × D [m] × P [pulse] × x = 100 [pulse] x = 100 / It becomes P×π×D. That is, the signal of the pulse oscillator 22 is input to the frequency divider 61 with a frequency division ratio x=100/P×π×D, the output of the frequency divider 61 is input to the counter 62,
The D/A converter 63 outputs the feed length L. Note that FIG. 3c is a diagram showing the relationship between the feed length L and the rolling length l. FIG. 7 shows another embodiment of the present invention, in which the third
Components with the same reference numerals as those in the drawings are the same, so their explanation will be omitted. In the figure, a signal from a pulse oscillator 22 is input to an F/V converter 71 and converted into a speed signal. This signal is input to the differentiator 72,
Calculate the rate of change of speed. The output of the differentiator 72 is input to a comparison integrator 73, which compares it with a reference value 74 and if a deviation occurs, it is integrated and output.
The reference value 74 is the optimum speed change rate (constant value) when the roll rolls down. Further, the output of the comparison integrator 73 is added together with the output of the function generator 25 in FIG. 3 by an adder 75, and serves as a tension reference. Although the roll tension was used as a standard, this is an open-loop setting control. On the other hand, in this embodiment shown in FIG. 7, the rate of change in the actual rolling speed is detected, and when the rolling speed is faster than the set rate of change, the tension reference value T of the delivery roll is increased by △T. On the other hand, when the speed change rate is slow, the tension reference value T of the delivery roll is controlled to be weakened (T-ΔT). This is particularly effective in compensating for differences in the weight of the winding roll due to differences in paper density. From the above explanation, the present invention can be applied to an open-loop system when there are not many types of band materials, and a closed-loop system when there are many types, depending on the application. For example, an open loop method can be applied to a newspaper winder, and a closed loop method can be applied to a top and medium size winder. It can be easily added as additional equipment to existing winding machine equipment. The feeding speed may be detected by any method such as detecting the rotational speed of the feeding roll itself, and there is no need to add any special measures to the equipment. It has many effects such as. Therefore, according to the present invention, in the process of processing the roll after winding, it is possible to prevent the roll from stopping on the table due to excessive tension and from paper breakage due to slack, eliminating the need for tension adjustment operations, and simplifying the operation. Therefore, it is possible to provide an effective winding machine delivery device that facilitates automatic roll changing operations.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a winding method of a take-up roll in a paper machine winder, Figs. 2 a and b are explanatory diagrams of malfunctions in a paper machine winder, and Fig. 3 is an embodiment of the present invention. 4 is a block diagram of the memory circuit, FIG. 5a is a diagram explaining the principle of the function generator of the present invention, FIG. 5b is a block diagram of the function generator, and FIG. Relationship diagram of rolling length l,
FIG. 6a is a diagram explaining the principle of the arithmetic circuit of the present invention, FIG. 6b is a block diagram of the arithmetic circuit, FIG. It is a figure which shows another Example. 11...Feeding roll, 12...Paper, 13...
... Winding drum, 14... Winding roll, 15...
...Pressure roll, 16...Paper roll, 17...
...Kicking arm, 18...Table, 19...
Stopper, 21... Winding diameter detector, 22... Pulse oscillator, 23... Contact, 24... Memory circuit, 25... Function generator, 26... Arithmetic circuit, 2
7... Sending length calculation section, 31... Amplifier, 3
2... Integrator, 41, 55... Divider, 42,
43, 45, 51, 52, 57... Multiplier, 4
4, 53, 58, 75... Adder, 46, 59...
... Multiplier, 54 ... Subtractor, 56 ... Function machine, 6
1... Frequency divider, 62... Counter, 63... D/
A converter, 71...F/V converter, 72...differentiator, 73...comparison integrator, 74...standard device.

Claims (1)

[Scope of Claims] 1. In a winding machine that performs tension control when feeding out a strip material, when winding of the strip material is completed, the strip material winding roll is discharged, and the winding roll winds up the strip material. a detector that detects the winding diameter φ of the take-up roll as it rolls down; a pulse oscillator that detects the distance l that the take-up roll rolls down;
and a function generator that receives the two signals and generates a function (φ, l, θ) from the rolling gradient θ, and uses the output of the function generator to control the tension of the take-up roll after the roll is kicked out. A winding machine feeding device characterized in that the determined value is . 2. In a winding machine that performs tension control to feed out the strip material, when the winding of the strip material is completed and the strip material winding roll is discharged, and the winding roll rolls down while winding up the strip material. a detector that detects the winding diameter φ of the take-up roll; a pulse oscillator that detects the distance l that the take-up roll rolls down;
A function generator that inputs the above two signals and generates a function (φ, l, θ) from the rolling gradient θ, a circuit that detects and calculates the rate of change in the speed at which the take-up roll rolls down, and changes in speed. and a circuit that compares and calculates the rate with respect to a reference value, and when the speed at which the take-up roll is discharged and rolls down is faster than the reference value, the speed at which it rolls down is increased so as to increase the tension control setting value of the delivery roll. A winding machine feed-out device characterized in that the tension control set value is corrected to be weakened when the tension control setting value is too slow.