KR20050118349A - Device for guiding web film - Google Patents

Abstract

The present invention provides an apparatus for performing an automated continuous process associated with the packaging of a product using a web type fabric (10), comprising: a bogie for accommodating the web type fabric (10) to allow movement in a width direction; Drive means connected to vary the position by inducing a linear motion of the bogie; Sensing means for detecting whether the web type fabric 10 deviates from the set path; And a controller for inputting a signal of the sensing means to determine the output of the driving means.

Accordingly, in an automated continuous process related to the packaging of the product, the fabric of the wrapping paper is adjusted in real time to move and maintain a predetermined position, thereby preventing defects and improving productivity.

Description

Device for guiding web film

The present invention relates to a guide mechanism of a web type fabric, and more particularly, to a guide type of web type fabric to adjust in real time to move the wrapping paper fabric in a fixed position in an automated continuous process related to the packaging of the product.

1 is a schematic diagram showing a general apparatus using a web type fabric.

In the apparatus for manufacturing a packaging film material, an extrusion is performed by T-DIE, cooled, followed by longitudinal stretching (MDO) with a stretching roll, transverse stretching (TDO), and tension (pull) The roll film) is passed through a winder (Winder) while maintaining a constant tension to form a roll of web roll-like web. The web-like fabric 10 is then subjected to a packaging printing or product packaging process under the control of the controller 20 in the processing line 12, such as a printer, slitter, laminating machine, coating machine, lamination.

Such a web-like fabric 10 includes paper and aluminum foil in addition to resin materials such as PE film and OPP film, which are essential for an automated system for packaging products in a continuous process in order to reduce manufacturing costs and reduce production costs in the field. to be.

In the three-pack packaging machine as shown in FIG. 1, the web type fabric 10 mounted on the support 15 at the front of the main body 11 should be precisely fed into the rear processing line 12. If the web-shaped fabric 10 is swayed in the width direction while being transported through the supporting rollers, a defect occurs in the following operations such as printing, cutting, coating, etc. of the subsequent processing line 12. The problem is that the work is cut off and cut off. Of course, the web-type fabric 10 used at this time should also be supplied in a precisely wound state without shaking.

Accordingly, an object of the present invention is to provide a guide mechanism of a web type fabric to adjust in real time to move the wrapping paper fabric in a fixed position in an automated continuous process associated with the packaging of the product.

In order to achieve the above object, the present invention provides an apparatus for performing an automated continuous process related to the packaging of a product using a web-like fabric (10): a bogie that accommodates the web-like fabric (10) to allow movement in the width direction; Drive means connected to vary the position by inducing a linear motion of the bogie; Sensing means for detecting whether the web type fabric 10 deviates from the set path; And a controller for inputting a signal of the sensing means to determine the output of the driving means.

In this case, the sensing means of the present invention alternatively uses a beam sensor 28 or a sonic sensor 38.

The driving means of the present invention alternatively uses an extractor 25 or a roll guider 35.

The controller of the present invention stores settings of a track type, a base type, a sensor type, a dead zone, a sensitivity, and a motor direction selected by a mode key. When the automatic mode is selected, the closed loop feedback control is performed according to the set circuit. When the manual mode is selected, the open loop control is performed by the input button.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing the main portion of the guide mechanism according to an embodiment of the present invention, Figure 3 is a perspective view showing the main portion of the guide mechanism according to another embodiment of the present invention, Figure 4 is a front panel of the controller according to the present invention Front view.

The present invention relates to an apparatus for performing an automated continuous process involving the packaging of a product using the web-like fabric 10. Such devices include molding machines, printing machines, slitters, laminating machines, coating machines, laminating machines and the like of raw film. The guide mechanism of the present invention includes a trolley for accommodating the web-shaped fabric 10 so as to be movable in the width direction, drive means connected to vary the position by inducing a linear movement of the trolley, and the web-shaped fabric 10 Sensing means for detecting whether the deviation from the set path, and a controller for inputting the signal of the sensing means to determine the output of the drive means.

At this time, the sensing means of the present invention may alternatively use the beam sensor 28 or the sonic sensor 38, the beam sensor 28 is shown through Fig. 2 sonic sensor 38 is shown through Fig. And explained.

In addition, the driving means of the present invention may alternatively use the extractor 25 or the roll guider 35, the extractor 25 is shown in Figure 2 through the roll guider 35 through Figure 3 respectively. And explained.

In FIG. 2, a bogie 24, an extractor 25, and a beam sensor 28 are provided on the main body 21 and are utilized in a process of performing unwinding or winding of the web type fabric 10. The trolley | bogie 24 is mounted on the main body 21 so that sliding reciprocation is possible via the rail 22. As shown in FIG. An extractor 25 mounted on the main body 21 adjacent to the trolley 24 is connected to the trolley 24 via its working rod. The extractor 25 is preferably a ball screw type driven by a servo motor rather than a hydraulic or pneumatic type. Pneumatic methods are complicated equipment, high operating noise and frequent management such as lubricating oil check or replacement. The beam sensor 28 may use a photo sensor and is installed to the upper side of the web type fabric 10 via the support 26.

Meanwhile, although not shown, a limit switch is provided to monitor the reciprocating stroke of the trolley 24. The limit switch may be installed to sense the bogie 24 or may be installed to sense the operating load of the extractor 25.

In FIG. 3, the support roller 32, the roll guider 35, and the sonic sensor 38 are provided on the main body, and are used in a process of performing the support of the intermediate part when the web-shaped fabric 10 is unwound or wound. The supporting rollers 32 are rotatably mounted at regular intervals on the main body. The roll guider 35 mounted between the support rollers 32 has an input / output roll 33 therein, and functions as the extractor 25 of FIG. 2. That is, although not shown in detail, the roll guide 35 may be configured on the bottom surface side thereof so as to rotate left and right about the vertical axis in the same plane. The sonic sensor 38 may use an ultrasonic sensor and is installed to surround the edge (edge) of the web type fabric 10 up and down through a support.

4 is a schematic view showing a comparison of the sensing means according to the present invention.

4A is a state in which the line portion 10a printed near the edge of the web type fabric 10 is monitored by using the beam sensor 28, and FIG. 4B is a beam sensor 28 or sonic sensor 38 being used. The edge of the web type fabric 10 is monitored. The beam sensor 28 may detect the line portion 10a and the edge of the web type fabric 10, but a backup roll 29 is necessary. On the other hand, the sonic sensor 38 can be detected as an edge only and does not require a backup roll 29. The beam sensor 28 is installed so as to project the line portion 10a or the center portion of the edge of the web-shaped fabric 10 on which the backup roll 29 is placed at right angles.

The beam sensor 28 and the sonic sensor 38 monitor the deviation of the line portion 10a or the edge and generate analog signals corresponding thereto, and these signals are converted into digital signals through the A / D converter and the controller 40 Is input periodically.

In the case of FIGS. 2 and 3, the controller of the present invention according to FIG. 5 includes a trace type, a base type, a sensor type, a dead zone, Stores the settings for Sensitivity and Motor direction. An example of setting items by the controller 40 is summarized in the following table, but is not limited thereto.

Item Trace type edge Line Base type Positive Negative Sensor type Beam Sensor (28) Sonic Sensor (38) Dead Zone 1 to 6 Sensitivity 1 to 3 Motor Direction Normal Reverse

In Fig. 5, reference numeral 41 denotes a power switch for performing the operation by turning the power on and off, reference numeral 42 denotes a display indicating a control state, reference numeral 43 denotes a set position 43a / limit switch input state 43b / operation key operation. A plurality of LEDs indicating the state 43c, reference numeral 44 is a mode key for setting step by step, numeral 45 is a selection key for determining the setting of each step, numeral 46 is a set key for storing the determined value, numeral 47 Manual key for manual operation, reference numeral 48 denotes an automatic key for automatic operation, and reference numeral 49 denotes a return key for correcting the center when the limit switch is input.

In addition, the controller 40 of the present invention performs the closed loop feedback control according to the circuit set when the automatic mode is selected, and performs the open loop control by the input button when the manual mode is selected. The controller 40 converts the analog error value received from the beam sensor 28 or the sonic sensor 38 into a control value, and outputs it to the DC servomotor of the extractor 25 or the roll guider 35 to rotate forward or reverse. Instruct them to do so. The storage and execution of the setting value or the operating sequence according to the operation mode selection is based on a digital circuit by the microprocessor, and controls the driving means such as the extractor 25 or the roll guider 35 or turns on the LED 43. You can also use analog circuitry in part to turn it off.

Fig. 6 is a flowchart showing the setting of the controller according to the present invention, and Fig. 7 is a front view showing the display state of the controller according to the present invention.

In Fig. 6, when the power switch 41 is turned on, the power switch 41 is initialized to a standby state for setting. Subsequently, each time the mode key 44 is pressed, the above-described trace type, base type, sensor type, dead zone, sensitivity, and motor direction steps are progressed. In each step, pressing the left and right selection keys 45 displays the display 42. The changing state of the setpoint appears on the screen. 7A and 7B illustrate a state in which the setting of the display 42 is changed. After the last step of the setting, pressing the set key 46 stores the changed setting value. Then, in actual operation, the manual operation and the automatic operation are determined using the keys 47 and 47. When the manual operation is set, the LED 43c on the manual side lights up with a "beep" sound and can be moved in a desired direction by pressing a separate key (not shown). When the automatic operation is set, the LED 43c on the automatic side is turned on with a "beep" sound, and from this time, the control by the controller 40 is performed.

Accordingly, when the web-shaped fabric 10 is detected to deviate from the predetermined path on the support roller due to the shaking during transportation, the exciter 25 is finely pulled or pushed to one side to follow the position. It is important to reach the setting value quickly by using proper sensing means and judgment algorithm during automatic operation, but care must be taken to avoid frequent hunting to follow the setting value. The present invention adopts a DC servo motor control method with the addition of a dynamic brake circuit to realize a stable system by reducing the inertia of the motor at the driving moment as much as possible. Nevertheless, if a hunting phenomenon occurs, it can be controlled by changing a setting such as Sensitivity.

According to the above configuration and operation, the present invention has an effect of preventing defects and improving productivity by adjusting the wrapping paper fabric in real time to move and maintain a predetermined position in an automated continuous process related to the packaging of the product.

1 is a schematic diagram showing a typical device using a web-type fabric,

2 is a perspective view showing a main portion of a guide mechanism according to an embodiment of the present invention;

3 is a perspective view showing a main portion of a guide mechanism according to another embodiment of the present invention;

4 is a schematic view showing a comparison of the sensing means according to the present invention;

5 is a front view showing a front panel of the controller according to the present invention;

6 is a flowchart showing the setting of a controller according to the present invention;

7 is a front view showing a display state of a controller according to the present invention.

Explanation of symbols on the main parts of the drawings

10: web fabric 21: main body

22: rail 23: roll shaft

24: Balance 25: Extractor

26: support 28: beam sensor

32: support roller 35: roll guider

38: Sonic Sensor 40: Controller

Claims (4)

In the apparatus for performing the automated continuous process associated with the packaging of the product using the web-like fabric (10): A trolley for accommodating the web-shaped fabric 10 to allow movement in the width direction; Drive means connected to vary the position by inducing a linear motion of the bogie; Sensing means for detecting whether the web type fabric 10 deviates from the set path; And And a controller for inputting a signal of the sensing means to determine the output of the driving means. The method of claim 1, The sensing means is a web type fabric guide mechanism, characterized in that alternatively using the beam sensor 28 or the sonic sensor (38). The method of claim 1, The drive means is a guide device of the web-type fabric, characterized in that using the exciter 25 or the roll guider (35) alternatively. The method of claim 1, The controller saves the settings of the track type, the base type, the sensor type, the dead zone, the sensitivity and the motor direction selected by the mode key, and automatically The closed loop feedback control is performed according to a set circuit when the mode is selected, and the open loop control mechanism is performed by the input button when the manual mode is selected.