JPH07323515A - Film splicing kind discriminating method and label bonding device - Google Patents

Abstract

PURPOSE:To automatically and accurately discriminate the kind and position of splicing to transmit them to a next process. CONSTITUTION:First and second splice sensors always detecting the thickness of a film and a label bonding device bonding a label to the film are provided to a film feed route. Further, a splice kind discrimination means 13 discriminating the kind of splice on the basis of the thickness distribution of the film detected by the first and second splice sensors and a splice position calculation means 14 calculating a splice position on the basis of the detection signals of the first and second splice sensors are provided. Furthermore, a label bonding data calculation means 15 calculating data for bonding a label on the basis of the line speed, the kind of splice and splice position of the film and a label bonding signal output means 16 supplying control data showing the bonding of a label to the label bonding device on the basis of the data calculated by the means 15 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film piecing type discriminating method for automatically discriminating a film piecing type such as a soft packaging material, and a label attaching system for automatically attaching a label according to the film piecing type. .

[0002]

2. Description of the Related Art Conventionally, in a printing trader, in a process prior to a special marking process using a film such as a soft packaging material, an operator is
While unrolling the film and winding it up on another roll, a warning paper was inserted in the seam of the film according to the kind of the seam and the position of the defect. Since the warning paper is wound with the film, in the wound film,
Warning paper will be inserted in several places. Thus, the joint position and the defect position are transmitted to the next process.

The types of joints are roughly classified into manufacturer joints and internal joints. The maker tie is a film maker (film maker) put a tie on the film, and already exists when the film is purchased. A single tape of a specified color is usually attached to this joint position. An example of a manufacturer's succession is shown in Figure 4 (a),
It is shown in FIG. 4A is a view of the films 1 and 1 viewed from the front, and FIG. 4B is a view of the films 1 and 1 viewed from the side. As shown in these figures, in the manufacturer's joint, the films 1 and 1 are adhered by the adhesive member 2, and the upper surface of the film 1 in FIG. 4 (b) is as shown in FIG. 4 (a). The tape 3 of the designated color is attached to the joint position.

On the other hand, the internal splicing is a splicing that occurs in the process of production at present, and is a splicing performed by a printing company. An example of an internal joint is shown in FIG.
It shows in FIG.5 (b). 5A is a view of the films 1 and 1 viewed from the front, and FIG. 5B is a view of the films 1 and 1 viewed from the side. As shown in these figures, in the internal joint, a tail 4 of about 4 to 5 m remains from the jointed position. This is because the film is cut by inserting a cutter after the cylinder has rotated about two times from the time when the film was continued.

[0005]

As described above, in the conventional method, the worker constantly monitors the film to be wound and inserts the warning paper. Since the film is always wound up, the splicing position does not stop. Therefore, there is a possibility that the position where the worker inserts the warning sheet and the actual joint position may deviate from each other. That is, there is a drawback that the joint position information lacks accuracy.

Further, it is necessary to arrange a worker to constantly monitor the film, which increases the cost and hinders the unmanned process. The present invention has been made in view of the above-mentioned circumstances, and a film splicing type determination method for automatically and accurately determining the splicing type and position, and accurately transmitting the splicing type and position to the next process. It is intended to provide a can and labeling system.

[0007]

A film splicing type determining method according to claim 1, wherein the splicing position is obtained by constantly detecting the thickness of the film when winding the film, and the distribution of the thickness of the film. The feature is that the type of joint is determined based on.

The label sticking system according to claim 2 is
Along the transport path of the film, a sensor that constantly detects the thickness of the film, and a label sticking device that sticks a label to the film are provided, and based on the thickness distribution of the film detected by the sensor. Based on the splicing type discriminating means for discriminating the splicing type, the splicing position calculating means for calculating the splicing position based on the detection signal of the sensor, the transport speed of the film, the splicing type and the splicing position, A label sticking information calculation means for calculating information for sticking the label, and control data indicating sticking of the label is supplied to the label sticking device based on the information calculated by the label sticking information calculation means. A label sticking signal output means, and the label sticking position of the label sticking device coincides with the joint position. .

[0009]

According to the film splicing type determining method, the splicing position is obtained by constantly detecting the thickness of the film when winding the film. Further, the type of joint is determined based on the distribution of the film thickness. That is, the type and position of the joint are automatically and accurately determined.

Further, according to the above labeling system,
By the sensor provided along the film transport path,
The thickness distribution of the film is obtained, and the joint type discriminating means discriminates the joint type of the film. further,
The joint position calculating means calculates the joint position based on the detection signal of the sensor. Then, the label sticking information calculating means calculates information for sticking the label based on the transport speed of the film, the type of the splice, and the splice position, and the label sticking signal output means calculates the label sticking. Based on the information calculated by the information calculating means, control data indicating that a label is to be attached is supplied to a label attaching device provided along the transport path of the film to attach the label to the film. At this time, the position where the label is attached matches the joint position. Thus, the type and position of the joint are automatically and accurately determined, and the type and position of the joint are accurately transmitted to the next process.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration of a control unit of a label sticking system according to an embodiment of the present invention, and FIG. 2 is a schematic configuration of the system. The system shown in these figures, by the film splicing type determination method described below,
The film is spliced and the type of the splicing is determined, and a label is attached at the splicing position.

A: Film splicing type determination method The splicing portion of the film is thicker than one film as shown in FIGS. 4 (b) and 5 (b). Therefore, a sensor for detecting the thickness of the film to be fed out (rolled up) is provided so that the film has a predetermined thickness (1
If it is set to output a detection signal of a predetermined level when the thickness exceeds the sheet thickness), it is possible to determine whether or not there is a joint by monitoring the detection signal.

A method for discriminating whether or not the joint is an internal joint when the joint is present will be described below. The internal joint is 4 to 5 m as shown in FIGS. 5 (a) and 5 (b).
Since the tail 4 of the degree is involved, the detection signal of the sensor is
Predetermined period (period corresponding to a film of about 4 to 5 m)
However, it is a predetermined level. Therefore, the internal joint can be determined. Alternatively, if the mounting position of the sensor is set at a position slightly more than 4 to 5 m from the paper feeding unit, the joint detected by the sensor immediately after the paper feeding unit starts feeding is an internal joint. Of course, all joints other than the above-mentioned inner joints are manufacturer joints.

B: Label Sticking System Referring again to FIG. 2, the structure of the label sticking system for sticking a label at the splicing position will be described based on the film splicing type determining method described above. In FIG. 2, 5 is a first paper feed roller, 6 is a second paper feed roller, and 7 is a take-up roller, which is a film fed from the first or second roller 5 or 6 through some rollers. Take up 1.

A first joint sensor 8 and a second joint sensor 9 are provided in the paths of the films 1 and 1 fed from the first and second paper feed rollers 5 and 6, respectively, and the thickness of the films 1 and 1 is increased. Is detected, and a detection signal (first detection signal, second detection signal) of a predetermined level is output while the thickness exceeds the predetermined thickness. Also, in the path of film 1,
A label sticking device 10 is provided near the take-up roller 7, and sticks a label on the film 1 based on the control data supplied from the control unit shown in FIG.

Although not shown, a sensor for detecting the winding number (MM) of the winding roller 7 and outputting a winding number signal indicating the winding number is provided near the winding roller 7. Further, only one of the first and second paper feed rollers 5 and 6 operates, and the switching timing thereof is supplied from a device (not shown) of a first axis switching signal and a second axis switching signal. It's time. The first axis switching signal is a signal that activates the first paper feed roller 5, and the second axis switching signal is a signal that activates the second paper feed roller 6.

Next, the structure of the control section of the label sticking system will be described with reference to FIG. The control unit shown in FIG. 1 is realized by a computer including a CPU, a ROM, a RAM, a storage device, various I / O interfaces, etc., and will be described later by executing a program stored in the ROM or the storage device. Each means 11-16
To generate.

The data collecting means 11 reads the first and second detection signals, the first and second axis switching signals, the winding number signal, the clock signal, and the information in the data file stored in the storage device, and the line speed. It is supplied to the calculation means 12, the joint type determination means 13, and the joint position calculation means 14. In the data file, the inter-path distance (P1 [m]) which is the film passing distance from the first joint sensor 8 to the label sticking apparatus 10 and the path between the second joint sensor 9 and the label sticking apparatus 10 are set. The distance (P2 [m]), the time (RT [s]) from when the control data is sent to the label sticking apparatus 10 until the label is actually stuck, and the time when the label is stuck in the case of internal splicing The distance between two labels (RK [m]) is stored. The value obtained by dividing this RK by 2 (RK / 2) is the distance from the joint position to the position where the label is actually attached.

The line speed calculating means 12 calculates the line speed (LS [m / s]) based on the number of windings (MM) of the winding roller 7 represented by the winding number signal. Further, the joint type discriminating means 13 determines whether the first detection signal has reached a predetermined level after the first axis switching signal is generated, or
Whether the internal joint or the manufacturer joint is determined based on whether the detection signal is at a predetermined level for a predetermined period (a time corresponding to a film of 4 to 5 m). Of course, similar processing is performed on the second detection signal, but here, in order to avoid complication of description, only the first detection signal will be described.

Further, the joint position calculating means 14 calculates the joint position from the time when the first detection signal reaches a predetermined level. Further, the label sticking information calculation means 15 includes each means 1
The positions (RM, RM1, RM2 [m]) where the label is actually attached are calculated based on the information obtained in 2 to 14.

When the determination result of the joint type discriminating means 13 is the manufacturer joint, the position (RM) at which the label is actually attached is calculated by the following equation (1). RM = MM + P1−LS × RT (1) On the other hand, when the determination result is an internal joint, the position (RM1, RM2) at which the label is actually attached is calculated by the following equations (2) and (3). ) Is calculated. RM1 = MM + P1-LS * RT-RK / 2 ... (2) RM2 = MM + P1-LS * RT + RK / 2 ... (3)

In the above equations (1) to (3), "L
“S × RT” is the distance traveled by the film 1 after the label sticking signal output means 16 supplies the control data to the label sticking apparatus 10 until the label is actually stuck. Further, “MM + P1” is a position where the joint actually passes through the label sticking device 10. Furthermore, "± RK / 2"
Indicates the distance between the actual joint position and the label attachment position. Further, the label sticking signal output means 16 is
When the number of turns (MM) corresponds to the position (RM or RM1 and RM2) calculated by the label calculating means 15, the label sticking signal is output.

The process of attaching a label to the splicing position of the film 1 in such a structure will be described with reference to FIGS.
This will be described with reference to FIGS. 3 (a) and 3 (b). First, for example, when the first detection signal of a predetermined level is output from the first joint sensor 8, the joint type discriminating unit 13 discriminates the joint type. If the determination result indicates “manufacturer joining”, the joining position RM is calculated by the label sticking information calculation unit 15, and the control data is supplied from the label sticking signal output unit 16 to the label sticking apparatus 10. As described above, the label sticking signal output means 16 outputs the signal early in anticipation of the time required for the label sticking apparatus 10 to operate in advance, so as shown in FIG. The label 17 is attached to the position corresponding to.

On the other hand, if the discrimination result of the joint type discriminating means 13 indicates "internal joint", the label pasting information calculating means 15 calculates the joint positions RM1 and RM2, and the label pasting signal output means 16 controls. The data is supplied to the labeling device 10. Thus, as shown in FIG. 3B, a predetermined distance (RK / 2; FIG. 3B) from the joint position.
Then, the labels 17 and 17 are attached at positions separated by 5 m).

As described above, according to one embodiment of the present invention, the type of joint can be accurately discriminated and the joint position can be accurately grasped. Therefore, the label 17 should be accurately placed at the position according to the type of joint.
Can be attached. That is, the type and position of the joint can be accurately transmitted to the next process. Also,
Since it is not necessary to always arrange workers, the cost can be reduced and the process can be unmanned.

[0026]

As described above, according to the film splicing type determining method of the present invention, the splicing position is obtained by constantly detecting the thickness of the film when winding the film. Further, the type of joint is determined based on the distribution of the film thickness. Therefore, there is an effect that the type and position of the joint can be automatically and accurately determined.

Further, according to the label sticking system of the present invention, by the joint type discriminating means and the joint position calculating means,
The type and position of the film splice is determined. Then, the label sticking information calculating means calculates information for sticking the label based on the transport speed of the film, the type of the splice, and the splice position, and the label sticking signal output means calculates the label sticking. Based on the information calculated by the information calculating means, control data indicating that a label is to be attached is supplied to a label attaching device provided along the transport path of the film, and the label is attached to the joint position of the film. To do. Therefore, there is an effect that the joint type and position can be automatically and accurately determined, and the joint type and position can be accurately transmitted to the next process.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a control unit of a label sticking system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of the system.

FIG. 3A is a diagram showing a sticking position of the label 17 in the manufacturer joint, and FIG.

FIG. 4 (a) shows a film 1 in a maker's joint.
1 is a front view of the film 1, and FIG. 1B is a side view of the film 1, 1.

5 (a) is a view of the films 1 and 1 viewed from the front, and FIG. 5 (b) is a view of the films 1 and 1 viewed from the side.

[Explanation of symbols]

 8 1st joint sensor (sensor) 9 2nd joint sensor (sensor) 10 Label sticking device 13 Joint type discriminating means 14 Joint position calculating means 15 Label sticking information calculating means 16 Label sticking signal output means

Claims (2)

[Claims] 1. A film splicing type characterized in that the splicing position is determined by constantly detecting the thickness of the film when winding the film, and the splicing type is determined based on the distribution of the film thickness. How to determine. 2. A sensor for constantly detecting the thickness of the film and a label sticking device for sticking a label on the film are provided along the transporting path of the film, and the thickness of the film detected by the sensor. Type determining means for determining the type of splicing based on the distribution of distribution, splicing position calculating means for calculating the splicing position based on the detection signal of the sensor, the transport speed of the film, the type of splicing, and the splicing position Based on the label sticking information calculating means for calculating the information for sticking the label, and based on the information calculated by the label sticking information calculating means, the control data indicating the sticking of the label, A label sticking signal output means for supplying to the sticking device, and the label sticking position of the label sticking device may coincide with the joint position. Labeling system according to claim.