JPH10194214A - Liquid filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent work outputs such as folding lines, punched holes and characters from slipping based on a printing for external package of a packaging material. SOLUTION: This filling device is constituted in such a manner that a processing treatment is applied by a process treating means to a web-form packaging material 11 on which marks are imparted by placing specified intervals, and a content is filled. In this case, on the upstream side of the process treating means in the carrying direction of the packaging material 11, a plurality of sensors which are arranged by placing specified intervals to each other, and detect the marks on the packaging material 11, a packaging material length judging means 92 which judges whether the packaging material 11 is longer than a standard or not, based on a detected result of each sensor, a feeding amount changing means which changes the feeding amount of the packaging material 11, and a feeding amount correcting means 93 which drives the feeding amount changing means based on a judgement result of the packaging material length judging means 92, and corrects the feeding amount of the packaging material 11, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a liquid filling device.
It concerns the device.

[0002]

2. Description of the Related Art Conventionally, in a small packaging container filled with liquid food such as milk or soft drink, for example, in order to pour out the stored liquid food, a predetermined position on a top wall of the packaging container is required. A spout is formed, and a pull tab is stuck to the spout.

[0003] In this type of packaging container, a web-like packaging material made of a flexible laminate is continuously formed in a liquid filling device while being conveyed into a tube shape. It is produced by filling a liquid food into the food. For this purpose, the web-like packaging material is set in a cassette of a liquid filling apparatus in a state of a reel. In this case, the web-like packaging material is printed in advance on a portion corresponding to the surface of the packaging container for exterior use. Then, the web-like packaging material fed from the cassette is conveyed in the liquid filling device, and a punching hole serving as the spout is formed by a hole opening device, and the punching hole is formed from the back side of the packaging material corresponding to the punching hole. The inner seal is attached with a pull tab from the front side. Subsequently, at predetermined intervals in the packaging material, molding folds are formed by the creaser.

[0004] Next, the web-shaped packaging material is sealed in the vertical direction to form a tube, and the tube-shaped packaging material is filled with liquid food by a filling nozzle while being conveyed downward. Subsequently, the tube-shaped packaging material is sandwiched from both sides by a horizontal sealing device, is horizontally sealed at predetermined intervals, and the sealed portion is cut to form a pillow-shaped prototype container. Is done. Then, the prototype container is formed into a predetermined shape along the fold, and a packaging container containing a fixed amount of liquid food is completed.

[0005]

However, in the above-mentioned conventional liquid filling apparatus, when a packaging container is formed by packaging materials of different lots, a crease is formed by a creaser in accordance with the external printing of the packaging material. The punch hole and the fold are shifted due to the elongation of the packaging material. For example, since the opening device and the creaser are separated by a distance corresponding to a packaging container for about 20 boxes, when the packaging material extends by 0.1 [mm] per box, the punch hole and the fold become 2 [mm]. m
m]. Therefore, the inner seal and the pull tab cannot be accurately adhered to the positions corresponding to the punch holes.

Similarly, if a crease is formed by the creaser in accordance with the printing of the packaging material for the exterior, the characters printed on the component display section of the packaging container by the printing device are displaced from the crease. For example, a printing device and a creaser
Since it is separated by a distance corresponding to about 23 to 26 boxes of packaging containers, if the packaging material extends 0.1 [mm] per box,
The character and the fold are shifted by about 2.3 to 2.6 [mm].

[0007] The present invention solves the problems of the above-mentioned conventional liquid filling apparatus, and provides a fold,
It is an object of the present invention to provide a liquid filling apparatus in which work outputs such as punch holes and characters do not shift.

[0008]

For this purpose, in the liquid filling apparatus according to the present invention, the web-like packaging material to which the mark is provided at a predetermined interval is processed by the processing means, and , To be filled with the contents. And a plurality of sensors arranged at a predetermined interval from each other on the upstream side of the processing means in the conveying direction of the packaging material and detecting marks of the packaging material, and based on detection results of the sensors. A packaging material length determining means for determining whether the packaging material is longer than a standard, a feeding amount changing means for changing the feeding amount of the packaging material, and a determination result of the packaging material length determining means, A feed amount correcting unit that drives the feed amount changing unit and corrects the feed amount of the packaging material.

In another liquid filling apparatus according to the present invention, the feed amount correcting means starts correcting the feed amount of the packaging material after the seam of the packaging material has passed through the feed amount changing means. In still another liquid filling apparatus according to the present invention, the feed amount correcting means ends the correction of the feed amount of the packaging material after the seam of the packaging material has passed through the feed amount changing means.

In still another liquid filling apparatus of the present invention, there is further provided a correction value changing means for changing a correction value of a feeding amount of the packaging material as the packaging material is transported.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a conceptual diagram of a liquid filling device according to an embodiment of the present invention. In the figure, reference numeral 20 denotes an opening device for forming a punch hole (not shown) in the packaging material 11 fed from a cassette (not shown);
Is an inner seal sticking device for sticking an inner seal (not shown) from the back side of the packaging material 11 corresponding to the punch hole,
5 is a pull tab sticking device for sticking a pull tab (not shown) from the front side of the packaging material 11 corresponding to the punch hole, 33 is a creaser that forms a fold in the packaging material 11, and 48 and 49 are conveyance of the packaging material 11. The first and second marks which are arranged at a predetermined interval from each other on the upstream side of the hole opening device 20 in the direction and which are provided with a predetermined interval on the packaging material 11 and which are not illustrated, for example, eye marks. 2 sensors, 51,
Reference numeral 71 denotes first and second correction devices as feed amount changing means for changing the feed amount of the packaging material 11, and reference numeral 91 denotes a control device. Although two sensors are used in the present embodiment, three or more sensors can be used.

The control device 91 includes a packaging material length determining means 92 for determining whether the packaging material 11 is longer than a standard based on the detection results of the first and second sensors 48 and 49;
A feed amount correcting unit 93 that drives the first and second correction devices 51 and 71 based on the determination result of the packaging material length determining unit 92 and corrects the feed amount of the packaging material 11 is provided. FIG.
Is a schematic diagram of a liquid filling device in an embodiment of the present invention,
3 is a first state diagram of the packaging material according to the embodiment of the present invention, FIG. 4 is a second state diagram of the packaging material according to the embodiment of the present invention, and FIG. 5 is a packaging material according to the embodiment of the present invention. FIG. 6 is a fourth state diagram of the packaging material according to the embodiment of the present invention.
FIG.

As shown in the figure, a web-shaped packaging material 11 is set in a cassette (not shown) in the state of a reel 12, fed out of the cassette by a feeding machine (not shown), and conveyed by a conveying device (not shown). Each processing is performed by processing means such as the hole opening device 20, the inner seal sticking device 22, the pull tab sticking device 25, and the creaser 33.

The packaging material 11 is made of a flexible laminate in which polyethylene is coated on both sides of a paper base material, and a barrier layer made of aluminum foil (foil), a barrier resin or the like is formed as necessary. Then, a portion corresponding to the surface of the packaging container 41 is printed in advance for exterior use, and a predetermined portion of the packaging material 11 is, as shown in FIG.
A so-called collective display column AR1 is formed, which indicates a product name, a raw material name, and the like defined by a law or the like.

After being unwound from the cassette, the packaging material 11 is sent to a printing device 19 via a turn roller 14, a dancer roller 15, an offset roller 16, a feed roller 17, a magazine roller 18, and the like. As shown in FIG. 2, the printing device 19 is disposed adjacent to the packaging material 11 conveyed in a vertical direction, and prints the manufacturing date of the packaging container 41 and the like on the collective display column AR1 of the packaging material 11. I do. Then, the packaging material 11 on which the date of manufacture or the like is printed is sent to the opening device 20.

As shown in FIG. 2, the opening device 20 is disposed adjacent to the packaging material 11 conveyed in a vertical direction.
A punch hole 81 serving as a spout as shown in FIG.
Is formed at the setting location. In the present embodiment, the crease for two boxes of the packaging container 41 is folded by the creaser 33 including a pair of crease rollers 43 and 44 described later.
1 is formed. Therefore, the packaging material 1
Since it is necessary to form a pair of punch holes 81 each time 1 is stopped, the pair of opening devices 20 are arranged along the conveying direction of the packaging material 11.

A pair of inner seal sticking devices 22 are provided downstream of the opening device 20 along the direction in which the packaging material 11 is conveyed. Then, an inner tape 24 made of polyethylene is fed from the inner tape reel 23 of the inner seal sticking device 22 and is conveyed in a direction perpendicular to the conveying direction of the packaging material 11, and as shown in FIG. Hole 8
The inner seal 82 is adhered from the back side of the packaging material 11 corresponding to 1.

Further, a pair of pull tab attaching devices 25 are provided downstream of the inner seal attaching device 22 along the conveying direction of the packaging material 11. Then, a pull-tab tape 27 formed by coating aluminum foil with polyethylene is drawn from a pull-tab reel 26 of the pull-tab sticking device 25.
Are fed out and transported in a direction perpendicular to the transport direction of the packaging material 11, and a pull tab 83 is attached from the front side of the packaging material 11 so as to correspond to the punch hole 81 as shown in FIG.

Further, a creaser 33 is disposed downstream of the pull tab attaching device 25, and the creaser 33 is
While feeding the packaging material 11 by a distance corresponding to two boxes of the packaging container 41, a fold is formed corresponding to the printing for the exterior of the packaging material 11. Then, the wrapped packaging material 11 is conveyed to a filling machine 96, and is vertically sealed by a vertical sealing device 97 into a tube shape.
The liquid food as the contents is filled by a filling nozzle (not shown) while being transported downward.

Subsequently, the tube-shaped packaging material 11 is sandwiched from both sides by a horizontal sealing device 98, is horizontally sealed at predetermined intervals, and the sealed portion is cut to form a pillow-shaped prototype container. 94 is formed. Then, the prototype container 94 is formed into a predetermined shape along the fold line, and the packaging container 41 for accommodating a fixed amount of liquid food is completed.

Reference numeral 61 denotes an inner seal sensor, 62 denotes an OD design sensor, 63 denotes a pull tab splice sensor, 64 denotes a splice sensor, and 65 denotes a design collection sensor. By the way, packaging materials 11 of different lots
When the packaging container 41 is formed by using the creaser 33, a fold is formed in accordance with the exterior printing of the packaging material 11. Characters and folds are misaligned.

Therefore, when packaging materials 11 of different lots are used, the elongation of the packaging materials 11 is absorbed. FIG. 7 is a first diagram illustrating a transport path of the packaging material according to the embodiment of the present invention, FIG. 8 is a second diagram illustrating a transport path of the packaging material according to the embodiment of the present invention, and FIG. FIG. 10 is a diagram illustrating a first correction device according to an embodiment of the present invention. FIG. 11 is a diagram illustrating a first correction device according to an embodiment of the present invention. Figure showing
FIG. 12 is a characteristic diagram of the first correction device according to the embodiment of the present invention, and FIG. 13 is a characteristic diagram of the second correction device according to the embodiment of the present invention. In FIGS. 12 and 13, the horizontal axis represents the rotation angle of the flap, and the vertical axis represents the packaging material feed amount correction value.

In the drawing, 11 is a packaging material, 18 is a magazine roller, 19 is a printing device, 20 is a hole opening device, 22 is an inner seal sticking device, 25 is a pull tab sticking device, 33 is a creaser, and 57 is a bending roller. And the packaging material 1
Cassette and opening device 20 (not shown) in one transport path
, The first and second sensors 48 and 49 are arranged at a distance corresponding to the packaging containers 41 (FIG. 2) for 12 boxes, and the first and second sensors 48 and 49 are provided. Is the packaging material 11
(Not shown) is detected. Since one eye mark is set for each length corresponding to the six packaging containers 41, the first and second sensors 48 and 49 are provided.
Is disposed at a position where two eye marks are separated from each other.

The control device 91 (FIG. 1)
The difference between the times when the second sensors 48 and 49 detect the eye mark, that is, the detection time difference is measured by a timer (not shown), and it is determined whether or not the detection time difference is 8 [ms] or more. In this case, the detection time difference is 8
[Ms], an elongation of 1.1 [mm] occurs in the packaging material 11 having a length corresponding to the packaging container 41 of 12 boxes, and an elongation of 0.094 [mm] occurs in one box. become.

Then, the packaging material length judging means 92 of the control device 91 makes the detection time difference of 8 [m
s], the packaging material 11 is determined to be longer than the standard, and as a result, the feed amount correcting means 9 of the control device 91 is determined.
3 corrects the feeding amount of the packaging material 11, that is, the packaging material feeding amount. Further, the control device 91 determines that the detection time difference is 6 [m
s] is also determined. If the detection time difference is less than 6 [ms] for seven consecutive times, the packaging material length determining means 92 determines that the packaging material 11 is close to the standard length, and as a result, the feed amount correction is performed. The means 93 cancels the correction of the packaging material feed amount.

Further, a punch hole 81 for printing for packaging of the packaging material 11 is provided downstream of the opening device 20 and upstream of the inner seal sticking device 22 in the transport direction of the packaging material 11.
A first correction device 51 for eliminating the deviation (FIG. 4) is provided. The first correction device 51 includes a flap 53 provided on one side of the packaging material 11 and a backup roller 55 provided on the other side so as to be adjacent to the bending roller 57. Shaft 52
Is supported so as to be swingable about
4 is rotatably disposed. Usually, the flap 53 is placed at the origin position, and the moving roller 54 is placed at a position in contact with the packaging material 11. At this time, a proximity switch (not shown) generates an origin signal. When the packaging material length determination means 92 determines that the packaging material 11 is longer than the standard, the flap 53 is rotated by a stepping motor (not shown),
4 is pressed against the packaging material 11.

Further, a second correction device 71 for eliminating a fold deviation from the exterior printing of the packaging material 11 is provided downstream of the pull tab attaching device 25 and upstream of the creaser 33 in the transport direction of the packaging material 11. Is arranged. The second correction device 71 includes an arm 73 disposed on one side of the packaging material 11 and a pair of backup rollers 75 and 76 disposed at a predetermined interval on the other side.
3 is supported swingably about the shaft 72,
A moving roller 74 is rotatably provided at the tip. Normal,
The arm 73 is located at the origin position,
4 is placed at a position in contact with the packaging material 11. At this time, a proximity switch (not shown) generates an origin signal. When the packaging material length determining means 92 determines that the packaging material 11 is longer than the standard, the arm 73 is rotated by a stepping motor (not shown), and the moving roller 74 is pressed against the packaging material 11. Can be

For example, when it is determined that the packaging material 11 is longer than the standard, the control device 91 rotates the flap 53 based on the characteristics shown in FIG. 12 and the arm 73 based on the characteristics shown in FIG. Moving roller 54,
74 are pressed against the packaging material 11 respectively. As a result, the first
In the correction device 51, the bending roller 5
7, in the second correction device 71 by the backup roller 55 and the moving roller 54, the packaging material 1 is formed by the backup rollers 75 and 76 and the moving roller 74.
1 is slightly meandered and conveyed, so that the conveyance of the packaging material 11 can be delayed.

Therefore, the detection of the eye mark by the OD design sensor 62 is delayed, and the amount of the packaging material fed by the transport device is reduced in accordance with the delay in the detection of the eye mark. Then, in the first correction device 51, the flap 53
Corresponding to the rotation angle from the origin position of the punch hole 81.
Can be moved forward. Along with this, the position of the character printed in the collective display field AR1 by the printing device 19 can be moved forward. Further, the position of the fold formed by the creaser 33 can be moved forward in accordance with the rotation angle of the arm 73 from the origin position in the second correction device 71.

Therefore, the output of the work such as folds, punched holes, and characters does not shift with respect to the printing for the exterior of the packaging material 11. By the way, when all the packaging materials 11 are unwound from the cassette, the packaging material 11 is unwound from the next cassette, and the end of the previous packaging material 11 and the start end of the next packaging material 11 are connected by a splicer (not shown). As a result, packaging materials 11 of different lots are connected after the seam.

Therefore, the feed amount correcting means 93 starts correcting the packing material feed amount after the seam of the packing material 11 has passed through the first correcting device 51, and a control value changing means (not shown) of the control device 91. After the seam of the packaging material 11 passes through the first correction device 51, the correction value is gradually increased until the seam passes through the creaser 33. That is, when the detection time difference becomes 8 [ms] or more for 10 consecutive times, and the packaging material length determination means 92 determines that the packaging material 11 is longer than the standard, the packaging material 41 for 11 boxes is added. After the packaging material 11 has been fed by the corresponding distance and the seam of the packaging material 11 has passed through the first correction means 51, the rotation of the flap 53 is started. When the packaging material 11 is sent by a distance corresponding to the packaging containers 41 for 12 boxes, the moving roller 54
As a result, the feed amount correcting means 93 starts correcting the feed amount of the packaging material. Thereafter, the correction value changing means gradually increases the correction value and makes the correction value constant when the seam of the packaging material 11 passes through the creaser 33.

Further, the detection time difference is 6 times continuously for 7 times.
[Ms], when the packaging material length determination means 92 determines that the length of the packaging material 11 is close to the standard,
After the packaging material 11 is sent by a distance corresponding to the eleven boxes of packaging containers 41 and the seam of the packaging material 11 passes through the first correction means 51, the rotation of the flap 53 is started. And 1
When the packaging material 11 has been sent a distance corresponding to the two containers 41, the moving roller 54 is returned, and the correction of the packaging material feed amount by the feed amount correction means 93 is completed. Thereafter, the correction value changing means gradually reduces the correction value, and sets the correction value to 0 when the seam of the packaging material 11 passes through the creaser 33.

On the other hand, in the second correction device 71, 1
The detection time difference becomes 8 [ms] or more continuously for 0 times,
When it is determined that the packaging material 11 has become longer than the standard, the feed amount correcting means 93 starts correcting the packaging material feed amount after the seam of the packaging material 11 has passed through the pull tab attaching device 25, and The value changing means gradually increases the correction value until the seam of the packaging material 11 passes through the creaser 33.

Then, the detection time difference is 6 times continuously for 7 times.
[Ms], and when it is determined that the length of the packaging material 11 is close to the standard, the feed amount correcting unit 93 sets the packaging material 1
After the first seam has passed through the pull-tab sticking device 25, the correction of the packaging material feed amount is completed, and the correction value changing means gradually reduces the correction value until the seam of the packaging material 11 passes through the creaser 33. .

In FIGS. 8 and 9, the number with a circle indicates that the packaging container 41 corresponding to the portion of the packaging material 11 that has reached the creaser 33 is the upstream of the creaser 33 in the packaging material 11 when the first packaging container 41 is used. The order of the packaging containers 41 corresponding to the side part is shown. It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0036]

As described above in detail, according to the present invention, in a liquid filling apparatus, a web-like packaging material to which marks are provided at predetermined intervals is processed by processing means. And the contents are filled. And a plurality of sensors arranged at a predetermined interval from each other on the upstream side of the processing means in the conveying direction of the packaging material and detecting marks of the packaging material, and based on detection results of the sensors. A packaging material length determining means for determining whether the packaging material is longer than a standard, a feeding amount changing means for changing the feeding amount of the packaging material, and a determination result of the packaging material length determining means, A feed amount correcting unit that drives the feed amount changing unit and corrects the feed amount of the packaging material.

In this case, when it is determined based on the detection results of the plurality of sensors that the packaging material has become longer than the standard, the feeding amount changing means is driven, and the feeding amount of the packaging material is corrected.
Therefore, the output of the work such as the position of the fold, the position of the punched hole, and the position of the character in the collective display field does not shift with respect to the printing for the exterior of the packaging material.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a liquid filling device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a liquid filling device according to an embodiment of the present invention.

FIG. 3 is a first state diagram of the packaging material in the embodiment of the present invention.

FIG. 4 is a second state diagram of the packaging material according to the embodiment of the present invention.

FIG. 5 is a third state diagram of the packaging material according to the embodiment of the present invention.

FIG. 6 is a fourth state diagram of the packaging material in the embodiment of the present invention.

FIG. 7 is a first diagram illustrating a conveyance path of a packaging material according to the embodiment of the present invention.

FIG. 8 is a second diagram illustrating the transport path of the packaging material according to the embodiment of the present invention.

FIG. 9 is a third diagram illustrating a transport path of the packaging material according to the embodiment of the present invention.

FIG. 10 is a diagram showing a first correction device according to the embodiment of the present invention.

FIG. 11 is a diagram showing a second correction device according to the embodiment of the present invention.

FIG. 12 is a characteristic diagram of the first correction device according to the embodiment of the present invention.

FIG. 13 is a characteristic diagram of the second correction device according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 packaging material 19 printing device 20 opening device 22 inner seal sticking device 25 pull tab sticking device 33 creaser 48 first sensor 49 second sensor 51 first correcting device 71 second correcting device 92 packaging material length Judgment means 93 Feed amount correction means

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[Procedure amendment]

[Submission date] January 8, 1997

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Claims (4)

[Claims] 1. A liquid filling apparatus for processing a web-like packaging material to which a mark is given at a predetermined interval by a processing means and for filling contents, wherein: On the upstream side of the processing means in the transport direction of the material, disposed at a predetermined interval from each other,
A plurality of sensors for detecting a mark on the packaging material; (b) packaging material length determining means for determining whether the packaging material is longer than a standard based on the detection result of each sensor; Feed amount changing means for changing the feed amount of the material; and (d) feed amount correction means for driving the feed amount changing means based on the determination result of the packaging material length determining means to correct the feed amount of the packaging material. And a liquid filling device. 2. The liquid filling apparatus according to claim 1, wherein the feed amount correcting means starts correcting the feed amount of the packaging material after the seam of the packaging material has passed through the feed amount changing means. 3. The liquid filling apparatus according to claim 1, wherein the feed amount correcting means ends the correction of the feed amount of the packaging material after the seam of the packaging material has passed through the feed amount changing means. 4. The liquid filling apparatus according to claim 1, further comprising a correction value changing unit that changes a correction value of a feed amount of the packaging material as the packaging material is transported.