JPS6283969A - Winding tension control device - Google Patents

Abstract

PURPOSE:To enable measurement of winding torque by the use of a simple and reliable means, by a method wherein the driving reaction force of a prime mover for driving a winding shaft is determined by means of a road cell, and further, a tension value is determined by dividing winding torque by a winding size for feedback. CONSTITUTION:A prime mover 4 rotates and drives a winding shaft A through a pulley 9 and a belt 10, and when a sheet is rolled, a reaction force, simultaneously, is detected by pressing a road cell 7, mounted to a braking body 6 of a winding shaft retainer 1 body, by means of a prime mover mounting frame 5. The reaction force is determined as winding torque by multiplying it by a distance between a prime mover mounting frame 5P and the road cell 7, and is determined as the tension of the winding sheet by dividing it by a winding size calculated by an electric control part. The electric control part performs feedback control of rotation driving of the prime mover 4 so that the tension is maintained at a constant value. This enables direct measurement of winding torque, i.e., tension, during winding through a simple and reliable means.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to a winding device that winds various sheets such as paper, plastic film, cloth, metal foil, etc. Depends on the inner sheet tension control. Regarding this sheet tension control, the motor is mounted on the winder machine frame or near it so that it can be moved slightly, and the drive reaction force is determined by a load cell to determine the actual winding torque. Measure the torque.

A winding tension control device using this is provided.

(Prior art) The present applicant has disclosed in Japanese Patent Publication No. 59-13414
A tension control technology for a winder was disclosed. The tension control of the conventional apparatus described above is generally called taper control, and as the diameter of the sheet roll increases during the second winding, the winding tension is gradually weakened to prevent the first winding phenomenon.

In order to weaken the winding tension, the winding torque of the winding shaft drive mechanism of the single winder is weakened, so this is also called torque control.

(Problem to be Solved by the Invention) In order to control torque, the conventional technology for measuring torque values includes a belt transmission section in the torque transmission system to the two-wound shaft, and detecting pulleys on the slack side and tension side of the belt. is pressed and the tension difference on the image side is detected to detect the winding torque. This method has many problems, such as excessive growth.

Magnetic powder clutches, which are often used for torque control these days, have the inconvenience of having a slightly complicated transmission mechanism and increasing mechanical loss.

Furthermore, the tension signal of the setting section is converted into a torque signal (Tx
R→τ) Since the actual detected value (torque) is compared with the torque level, 2. Since we originally want to control the tension, it is preferable from the viewpoint of management and 2. to be able to display the tension directly. Therefore, we found that there was an issue in which we wanted to somehow directly control the tension.

(Means for Solving the Problems) Therefore, the present invention replaces the tension control device of the conventional device.

A movable motor mounting frame that can be moved easily by the drive reaction force when the motor drives the winding shaft.

a restraint body provided to restrain movement of the motor mounting frame due to the drive reaction force;

A load cell that is interposed between the stopping body and the motor mounting frame side member and detects the drive reaction force of the motor, a winding amount detection device that sequentially detects the winding amount, and a winding tension control that is set. A winding tension setting section consisting of a diagram or a calculation formula, a detection tension calculation section that calculates the actual torque value detected by the load cell into a tension value, and a winding tension set in the winding tension setting section. and a tension value obtained by calculating the torque value detected by the load cell, and a control section that controls the prime mover based on the tension value obtained by this comparison. This is a tension control device for a winding machine.

(Function) This invention obtains the drive reaction force of the prime mover for driving the single winding shaft using a load cell, and multiplies the detected pressing force by the distance from the common axis to the load cell to obtain the winding torque. The tension value is obtained by dividing by the diameter, and this value is also fed back by 9, so the structure of the torque detection device is simple, which simplifies the transmission mechanism. 1. Reduces mechanical loss. 2.
The songs can also be displayed and are easy to manage.

(Example) Since the present invention determines the drive reaction force of the prime mover for driving the take-up shaft using a load cell as described above, the above-mentioned conventional problems are eliminated.

Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the present invention applied to a winding device for sheet division and distribution, and as will be described later, the torque control relationship is significantly simplified compared to the conventional device shown in FIG. 12. R is a sheet roll, A is a winding shaft, B is a common touch roller that brings both left and right winding shafts A together during winding, 1 is a winding shaft support, la is its winding arm, lb is its moving base, 2 is a fluid pressure cylinder that swings the arm 1a, 3 is a sliding bed, S is a sheet to be wound up, and C is a slitter that divides the sheet.

FIG. 2 shows sheet rolls R lined up on one side of FIG. 1,
The respective winding shaft supports are shown.

Since the number of sheet rows/L/R to be wound at one time is large as described above, it is preferable that the torque control device attached to each winding shaft support 1 be as simple as possible. The present invention is most effective for such a winding device.

A detailed description of the present invention will be directed to a pair of winding shaft supports 1.
All you have to do is follow. FIG. 3 is a basic explanatory diagram of the winding torque measuring device of the present invention, and shows an embodiment in which a prime mover (motor) 4 is directly attached to the winding arm 1a. In this example, a motor mounting frame 5 is movably attached to the winding shaft support 1 so that when the winding shaft A is driven by the motor 4, it can be moved lightly by the drive reaction force. A restraining body 6 provided on the winding shaft support 1 side to restrain movement of the mounting frame 5 due to the drive reaction force. The main part thereof is a rotor self that detects the motor drive reaction force through the opening between the stopper 6 and the mounting frame side member 5a. Figure 4 shows the side view of the part that sandwiched the rotor self. The load cell 7 is attached to its holding member 7a, and the mounting frame 5 side member 5a has an adjustment screw 5b passing through it.

Tightening is Nara) 5c, so that the initial pressing force to Loadset/L/7 can be adjusted.

The motor mounting frame 5 is rotatably mounted by inserting its shaft portion 5p into a ball bearing 8 in a bearing hole provided through the nine-volume shaft support 1. Pulley 9 is attached to the part that passes through the hollow bearing and exits. The pulley 9 rotates the winding shaft A via the belt 10 as in the conventional manner.

Now, FIG. 5 shows an example in which the structure shown in the explanatory diagrams of FIGS. 3 and 4 is commercialized, and is one set of the three sets of winding sections shown in FIG. 2. The point where the prime mover shaft 4a is connected to the coupling 11 is the 1st turn shaft A.
Since this is a winding core, the only difference is that a core holding adapter 12 is attached to the tip of the support arm 1a, and the structure is such that it can be pushed and pulled by a fluid pressure cylinder 13.

Figures 6 and 7 show the main parts of another embodiment, in which the driving motor 4 is of a normal type, and the winding shaft support 1 side is restrained by the driving motor mounting frame 5, its members 5a, and screws 5b. It differs from the previous example in that the body 6 is sandwiched.

Furthermore, in the embodiment shown in Figures 8 and 9, the side surface of the 9-volume shaft support l is slightly recessed.

Here is the restraint body 6. By housing the detection unit such as Load Cell/I/7.

The pulley 9 can be connected directly to this without adding it to the prime mover shaft 4a.
A winding shaft drive bell) 10 can be hung on the winding shaft drive bell.

In all of the above embodiments, the axes of the motor shaft 4a and the motor mounting frame shaft portion 5p are aligned. The torque due to the motor drive reaction force during winding work, that is, the winding torque, is the applied force detected by RotoSelf.

It can be easily obtained by simply multiplying the distance from the common axis line to the rotor self.

However, the prime mover shaft 4a and the prime mover mounting frame shaft portion 5p are not necessarily
The axes do not need to be aligned. An example of this is shown in Figure 10.11.

Since the axes do not need to be aligned, the prime mover 4 is also housed in the hole drilled in the support arm 1a of the first-volume shaft support 1 in line with the prime mover mounting frame shaft portion 5p. Since the hole has some clearance, the prime mover 4 can swing due to the reaction force. However, in reality, the motor mounting frame member 5a to which the load cell 7 is attached is held between two support arm la-side restraints 6, and the reaction force is measured without moving it. By multiplying the measured pressing force of the load cell 7 by the distance from the motor mounting frame shaft portion 5p to the load cell 7, the torque of the reaction force, that is, the winding torque can be determined. Of course, since the calculation is performed by the control unit, it is easy to correct it depending on the conditions.

The reason why the single winding torque measuring device was developed was also to simplify the structure related to the winding tension control device, which will be described in the ninth section.

FIG. 12 shows a conventional, state-of-the-art sorting winding machine similar to that shown in FIG. Only the drive motor 4 and the magnetic particle clutch 14 are shown as tension control related parts. Although the dedicated control device for the magnetic particle clutch 14 is also large, its illustration is omitted.

According to the present invention, the magnetic particle clutch 14 and its control device become unnecessary, and only the simple torque measuring device using the load cell described above is added instead.

Winding tension control using a torque measuring device is significantly different from a conventional method using a magnetic particle clutch in that it directly controls the prime mover output. Conventionally, the output of the prime mover was not changed, and the amount of energy discarded was adjusted through the slip-and-lug transmission of the magnetic particle clutch, thereby adjusting the torque actually applied.

The winding tension control device of this invention directly detects the two-winding torque, calculates this torque into tension, and then compares it with the set tension and amplifies it directly.

Controls prime mover output.

Therefore, the only two mechanical parts are the above-mentioned torque measuring device, which is mainly the prime mover mounting frame 5 movably attached to the winding shaft support 1, and the rest is an electric control section. The electric control section consists of an electronic circuit that sequentially detects the winding amount of the winding machine and calculates the required drive tension from a given winding tension control diagram or calculation formula, as in the past, and the output of this circuit. With a certain tension value.

Calculate the actual torque value obtained from the load cell output above,
This is a control unit that determines a tension value, compares the two tension values, amplifies them, and controls the prime mover 4.

The winding tension control diagram shows the growth of sheet roll R after 9 rolls.

For example, in order to weaken the winding tension and prevent the phenomenon of single winding, etc., the sheet tension-winding amount diagram is made to be an appropriate straight line or curve. It is a control diagram. Also, such tension -
For example, a tension control diagram may be set to suppress the increasing tendency of the winding tension, which naturally increases as the winding diameter or the winding length increases, so as to form a winding amount diagram.

In any case, the winding tension control device of the present invention is preset with diagrams, calculation formulas, etc. so as to be able to calculate the tension value that changes as the winding progresses. An example block diagram is shown. The tension control device of the present invention is shown as a portion Y surrounded by a chain line, and the aforementioned winding torque measuring device is shown as X. The other parts are the conventional devices of this embodiment: 4 is the prime mover (motor), 14 is its control device, 15 is a winding amount detection device, 16 is a circuit for calculating the required rotation speed of the prime mover motor, and 17 is a sheet running speed detection device. It is.

In this example, the detection device 15 detects the winding amount by increasing the radius of the sheet roll R. As the radius increases, the amount of winding per revolution of the winding shaft increases, so it is necessary to reduce the number of revolutions by that amount.The arithmetic circuit 16 calculates the required number of revolutions by taking this into consideration and the detected value of the sheet running speed detection device 17. Decided,
The torque detection device X and the torque control device Y of the present invention are added to the basic configuration for issuing commands to the motor control device 14.

That is, the prime mover 4 rotationally drives the winding shaft (that is, sheet row) L/R via the tension detection device X, and the detection symbol of the torque detection device X is as follows.

It is sent to the detected tension calculation section 21 of the winding tension control device Y.

The winding tension control device Y has two winding tension setting sections 18. Comparison part 1
9. Amplifying section 20, detected tension calculating section 21. The detection signal from the winding amount detection device 15 is sent to the winding tension setting section 18. Amplifying section 20. It is input to the detected tension calculation section 21.

The winding amount detection device 15 detects the winding diameter of the sheet roll, the sheet winding length, etc. as one winding amount, and converts it into a signal of a required size. And the winding amount detection device 15
If the winding amount detected by is the winding diameter, the detection signal can be used as is, but in other cases.

A winding diameter calculation circuit is provided in the winding amount detection device 15, and the detection signal is further converted into a winding diameter signal by the winding diameter calculation circuit, and then the winding diameter signal is sent to the amplification section 20. Detection tension calculation section 21
Alternatively, the winding motor required rotation speed calculation circuit 16
need to be given to However, the winding diameter calculation circuit is 9 winding tension control device Y and the winding motor required rotation speed calculation circuit 16.
It may be placed on the side.

The winding tension setting unit 18 to which the winding amount detection signal is input,
Set winding amount - Depending on the winding amount based on the winding tension characteristicsh
The required winding tension is calculated every moment, and the signal thereof is given to the comparator 19.

On the other hand, the detection tension calculation unit 21 which receives the detection signal of the winding torque from the torque detection device The detection signal of the two-turn torso is converted into a signal in the tension dimension. The signal converted into the tension dimension is given as a feedback signal from the detected tension calculation section 21 to the comparison section 19.

In addition, if the signal converted into the tension dimension by the detected tension calculating section 21 is given to the 1st display and displayed as the detected winding tension, or given to the pen recorder and recorded, it will be possible to record the actual winding during the 2nd winding. The tension can be grasped and stored as data to obtain better winding quality. The comparison section 19 compares the required winding tension signal from the one winding tension setting section 18 and the feedback signal from the detected tension calculation section 21.

It issues an operation signal to obtain the required winding tension set in the winding tension setting section. This operating signal is given to the amplification section 20, and the amplification section 20 receives the operation signal.

The size is proportional to the winding diameter signal input from the winding amount detection device 15.

That is, it is converted into a torque dimension, further amplified, and inputted to the motor control device 14 as an operation signal.

The motor control device 14 controls the winding sheet roll to follow the sheet running speed based on the speed signal from the one-winding motor required rotation speed calculation circuit and the operation signal from the amplifying section 20, and adjusts the required winding tension based on the set winding tension. Controls the output of the motor to rotate with the torque of .

In addition, a 9-winding diameter signal is given to the amplification section of the 9-winding tension control device,
Even if the operating signal is the same, the operation signal given to the motor control device is changed according to the change in the winding diameter of the sheet roll. good.

Although the invention has been described above with reference to a small number of embodiments, the present invention can be variously modified by well-known techniques according to implementation conditions without changing the gist thereof.

Needless to say, it can be applied.

Although the motor mounting frame 5 in the above embodiment is movably mounted on the winding shaft support 1, it may be mounted on the floor a little distance from the machine frame of the winding device. The power can be transmitted using a belt, chino, etc.

(Effects of the Invention) The present invention has provided the simplest and most reliable means for directly measuring the winding torque during one winding in a sheet winding device.

In other words, the main parts are only the motor mounting frame, and the only other parts are its shaft support, restraints, and small accessories such as load cells. It is clear that the measured values are reliable because it does not have the drawbacks of the conventional methods mentioned above and is the most direct method of measuring the driving force. Therefore, it has become particularly suitable for devices equipped with many torque control sections, such as a split winder.

Moreover, there is a winding tension control device using this winding torque measuring device.

This eliminates the need for magnetic particle clutches, which have recently become indispensable for tension control, and saves materials and space.Since the prime mover power is directly controlled, the amount of power wasted by magnetic particle clutches can be saved.

[Brief explanation of drawings]

Figure 1 is a front view of an example of a winding machine to which this invention is applied;
The figure is a simplified side view, Figures 3 and 4 are a cross-sectional view and a partial side view for explaining the basic embodiment of the winding torque measuring device of the present invention, and Figure 5 is a side view of the main part of the same commercialized embodiment. Figures 6 and 7 are side views, front views, and 8th views of main parts of other embodiments.
, 9 is a side view of a main part of still another embodiment. A front view, FIG. 10.11 is a side view and front view of main parts of another embodiment, FIG. 12 is a front view of an example of a conventional winding machine, and FIG. 13 is a block of the electric control unit of a winding tension control device. It is a diagram. -Motor mounting frame, 6...Stopping body, 7...
・Load cell. 18... Setting section, 19... Calculating section, 20...
Comparison section. Patent applicant: Kataoka Machinery Co., Ltd. Procedural Rectification Statement (
Method) February 1986? Dear Commissioner of the Japan Patent Office, Body 1, Indication of the case, 1985 Patent Application No. 22-2323, 2, Name of the invention, winding tension control device 3, Person making the amendment, Relationship with the case, Patent applicant 4, Date of the order for amendment. January 8, 1986 (Shipping port)
January 28, 19865, Application subject to amendment 1!4 and specification

Claims (1)

[Claims] (1) When the winding shaft is driven by the prime mover, a prime mover mounting frame is movably mounted so as to be able to move lightly due to the drive reaction force, a stopper is provided to prevent the prime mover attachment frame from moving due to the drive reaction force, and a load cell interposed between the stopping body and the prime mover mounting frame side member to detect a prime mover drive reaction force;
and a winding amount detection device that sequentially detects the winding amount, a winding tension setting section that includes a set winding tension control diagram or a calculation formula, and an actual torque value detected by the load cell. A detected tension calculation unit that calculates a tension value; and a comparison unit that calculates the winding tension value set in the winding tension setting unit and the torque value detected by the load cell and compares the obtained tension value. A tension control device for a winding machine, comprising: a control section that controls the prime mover based on the tension values obtained by the comparison.