JPH0858737A - Feeding position-adjusting device for web of packaging material - Google Patents

Abstract

PURPOSE: To easily adjust a widthwise feed position of a packaging material web by detecting a shift in widthwise position of the web and adjusting an interval between two rollers. CONSTITUTION: Rods 33, 33 of a driving means 17 are connected to pivoting means 15, 15 on an end of two rollers 10, 10 placed in parallel, and pivoting means 15, 15 on the other end are attached to a fixing means by attaching boards 16, 16. When a position detector 19 detects that a widthwise position of a packaging material web 60 moves toward the fixing means, a stepping motor 29 is driven to drive both rods 33, 33 in directions where they extend farther from each other. Thus the packaging material 60 moves in an extending direction, and when it is correctly positioned, both rollers 10, 10 are restored to original positions. On the other hand, when the web 60 moves toward the driving means 17, both rods 33, 33 are driven in directions where they come closer, the web 60 is moved toward the fixing means, and the rollers are restored to the original positions when the correct position is reached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting a feed position of a packaging material web, which is mounted to adjust the position of a strip-shaped packaging material web when it is transferred in a liquid packaging apparatus.

[0002]

2. Description of the Related Art Conventionally, there has been used a liquid storage container in which a packaging material having polyethylene layers on both sides of a paper is molded into a brick-shaped container, and liquid food such as milk or juice is filled in the container. .

On the other hand, there has been developed a liquid packaging device for molding the liquid container while at the same time filling the inside thereof with liquid food or the like. This liquid packaging apparatus performs various treatments such as sterilization while pulling out a strip-shaped packaging material web wound around a roll and guiding it to a plurality of rollers, and then gradually molding it into a tubular shape in the longitudinal direction of both sides. Liquid is filled inside while adhering the edges together, and the tubular packaging material web is sealed and cut at a uniform interval by a device called a jaw unit to be molded into a brick shape. It is of structure.

The band-shaped packaging material web transported in the liquid packaging device must be accurately positioned in the width direction. This is because if the packaging material web meanders, the bonding position may move when the packaging material web is formed into a tubular shape and the longitudinal edges on both sides thereof are bonded together.

As a positioning means, there is a method of positioning the packaging material web by bringing a positioning guide into contact with the longitudinal edge of the web.

[0006]

However, when the positioning guide is brought into contact with the longitudinal edge of the packaging material web, the edge may be bent. In this case, if there is a printing surface on the edge portion, the printing may be deformed or it may become an obstacle when integrally bonding both longitudinal edges of the packaging material web. is there.

The present invention has been made in view of the above points, and an object of the present invention is to easily guide the packaging material web in the width direction without mechanically pressing and guiding the longitudinal edges of the packaging material web. An object of the present invention is to provide a feeding position adjusting device for a packaging material web that can be positioned.

[0008]

In order to solve the above problems, a feeding position adjusting device for a packaging material web according to the present invention comprises two rollers installed in parallel around the packaging material web and the two rollers. And a pair of rollers that are attached to both ends of the rotary shaft of the roller so as to be rotatable and pivotally supported on a plane formed by the rotary shafts. Drive means for driving the two shaft supporting means at the same side end portion so as to move in a direction in which the distance between the both shaft supporting means is widened or narrowed in mutually, and a driving means for the two rollers. Fixing means for fixing the two shaft supporting means at the side end portion not attached, position detecting means for detecting the widthwise position of the packaging material web wound around the two rollers, and output of the position detecting means Drive the drive means in response to a signal Characterized by comprising a control means.

[0009]

[Operation] When the width of the packaging material web is displaced,
The position detecting means detects this, and the drive means is driven by the control means. The drive means widens or narrows the distance between the ends of the two rollers on the side where the drive means are mounted. As a result, the packaging material web moves in the direction in which the width of the two rollers becomes wider. This allows the packaging material web to be adjusted to a normal position.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. Here, FIG. 4 is a schematic perspective view showing a processing step of the packaging material web in the liquid packaging apparatus. As shown in the figure, the packaging material web 60 (in some cases, an aluminum layer is provided between the paper and the polyethylene layer) in which a polyethylene layer is formed on both sides of a band-shaped paper is used as a roll 65.
Is wound around.

The packaging material web 60 unrolled from the roll 65 is subjected to various treatments through several rollers 70, and then sterilized with hydrogen peroxide in a sterilization treatment section 80. And the packaging material web 60, which is guided upward through several rollers 70,
After that, it is guided almost vertically downward.

The upper molding roller 9 arranged along the moving path of the packaging material web 60 guided vertically downward.
0, 93, the plate-shaped packaging material web 60 is gradually formed into a tubular shape, and both longitudinal edges of the packaging material web 60 are adhered to each other by a welding device (not shown) at the lower molding roller 97 to form a perfect shape. Formed into a simple tube.

A web of packaging material 60 molded into a complete tube.
A desired liquid is filled in the inside of the container by a filling pipe 105 inserted from above, and after passing through the supporting roller 100, it is sealed and cut at a uniform interval by a device called a jaw unit (not shown). It is molded into a substantially brick shape, and is conveyed by a belt conveyor 110 to a final folding device (not shown) to be a substantially parallelepiped-shaped brick container.

In the liquid packaging apparatus described above, the packaging material web 60 to be subjected to various treatments must always have a constant widthwise position during its movement.

FIG. 1 is a perspective view showing a packaging material web feed position adjusting device 1 according to one embodiment of the present invention. As shown in FIG. 4, the packaging material web feed position adjusting device 1 is attached to an inlet side position of the sterilization processing unit 80.

As shown in FIG. 1, this apparatus 1 for adjusting the feeding position of the packaging material web has two rollers 1 installed in parallel.
0,10 and the rotating shafts 13 of the two rollers 10,10,
13 (not shown in the drawing), four shaft supporting means 15 attached to both ends, and drive means 17 mounted between the two roller supporting means 15 on one side of the two rollers 10, 10. A position detecting means 19 for detecting the position of the packaging material web 60, and a control means 21 for driving and controlling the driving means 17 according to an output signal of the position detecting means 19.

The four shaft supporting means 15 are all rotating shafts 13 and 13 of the rollers 10 and 10 (not shown in the figure).
The rotary shafts 13 and 13 are attached to both ends of the rotary shaft 13 so as to be rotatable and swingably supported on a plane formed by the rotary shafts 13 and 13.

The two shaft supporting means 15, 15 on the side where the driving means 17 for the two rollers 10, 10 are mounted,
The following rods 33, 33 of the driving means 17 are connected to each other.

On the other hand, the driving means 1 for the two rollers 10, 10
In the two shaft support means 15, 15 on the side where 7 is not attached,
Mounting plates 16 and 16 for mounting the shaft supporting means 15 and 15 to the fixing means 25 (not shown in the figure) are mounted.

Next, the driving means 17 includes a stepping motor 29, a rotary-linear motion converting mechanism 31 for converting the rotary motion of the drive shaft of the stepping motor 29 into a linear motion, and both side surfaces of the rotary-linear motion converting mechanism 31. A rod 3 protruding from the both ends of which is connected to the shaft supporting means 15, 15.
3 and 33.

When the stepping motor 29 is rotated in one direction, the rods 33, 33 are in the C and C directions shown in the figure, that is, the distance between the shaft support means 15, 15 connecting the rods 33, 33. Are driven in the direction of spreading each other. On the other hand, when the stepping motor 29 is rotated in the opposite direction, both rods 33, 33 are driven in the opposite direction (arrows D, D directions) to mutually narrow the interval between the two shaft support means 15, 15.

Next, the position detecting means (position detecting sensor) 19
Is attached at any position for detecting the position of the packaging material web 60 wound around both rollers 10, 10.

Further, the control means 21 inputs the output signal of the position detecting means 19 and performs a predetermined arithmetic processing, and outputs the output signal to the stepping motor 29 to control the driving thereof.

Next, the operation of the feeding position adjusting device 1 for the packaging material web will be described. 2 and 3 are schematic plan views for explaining the operation of the packaging material web feed position adjusting device 1.

As described with reference to FIG. 1, as shown in FIG. 2, the two rollers 10 and 10 are provided with respective rotary shafts 1.
The shafts 15 and 15 are rotatably supported by two shaft supporting means 15 and 15 respectively around the shafts 3 and 13, and the shaft supporting means 15 and 15 on one end side are connected to the rods 33 and 33 of the driving means 17. , The other end side of the shaft supporting means 15, 15 is the fixing means 2
It is attached to 5.

FIG. 2 shows a case where the rollers 10 are parallel to each other, that is, the position of the packaging material web 60 in the width direction is normal. At this time, the packaging material web 60 is fed as it is. Both rollers 10 and 10 only rotate.

Next, when the position of the packaging material web 60 in the width direction is moved to the fixing means 25 side, this is detected by the position detecting means 1.
9 (see FIG. 1), the stepping motor 29 is driven to drive both rods 33, 33 in the directions (arrows C, C) in which the rods 33, 33 are mutually expanded as shown in FIG. 3A. As a result, the ends of the rollers 10, 10 on the side where the rods 33, 33 are attached are expanded. Therefore, the packaging material web 60
Moves in the spreading direction (direction of arrow E). When the position detecting means 19 detects that the normal position has been reached, the stepping motor 29 is driven in the reverse direction to return both rollers 10, 10 to their original positions shown in FIG.

On the contrary, when the position of the packaging material web 60 in the width direction is moved to the drive means 17 side, FIG.
As shown in (3), both rods 33, 33 are driven in the direction of narrowing each other (arrow D, D direction). As a result, the packaging material web 60 is moved in the direction of the fixing means 25 (the direction of arrow F), and when the normal position is reached, both rollers 1 are similarly moved.
0 and 10 are returned to the original positions shown in FIG.

In the above embodiment, the packaging material web feed position adjusting device 1 according to the present invention is installed at the inlet side position of the sterilization processing section 80 shown in FIG. 4, but the packaging material web 60 is in the form of a strip. If the place is in the state of
It goes without saying that it may be installed in another place in the liquid packaging device.

[0030]

As described in detail above, according to the feeding position adjusting device for a packaging material web according to the present invention, it is not necessary to mechanically press and guide the longitudinal edges of the packaging material web, and This has an excellent effect that the width of the packaging material web can be easily positioned.

[Brief description of drawings]

FIG. 1 is a perspective view showing a feeding position adjusting device 1 for a packaging material web according to the present invention.

FIG. 2 is a schematic plan view for explaining the operation of the feeding position adjusting device 1 for the packaging material web.

3 (a) and 3 (b) are schematic plan views for explaining the operation of the feeding position adjusting device 1 for a packaging material web.

FIG. 4 is a schematic perspective view showing a processing step of a packaging material web in a liquid packaging device.

[Explanation of symbols]

 1 Packaging Material Web Feed Position Adjusting Device 10, 10 Roller 13, 13 Rotating Shaft 15 Shaft Supporting Device 17 Driving Means 19 Position Detecting Device 21 Controlling Means 25 Fixing Means 29 Stepping Motor 31 Rotation-Linear Motion Conversion Mechanism 33, 33 Rod 60 Packaging material Web 65 rolls 70 rollers

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michael Olson Regements Gartan 16 S-211 42 Marumo Sweden

Claims (1)

[Claims] 1. A liquid packaging device in which a strip-shaped packaging material web wound around a roll is drawn out and guided by a plurality of rollers, and after various treatments, formed into a tubular shape and filled with a liquid therein. Of the two rollers arranged in parallel with each other, which are arranged at a predetermined position where the packaging material web is in a belt-like state, around which the packaging material web is wound, and rotation axes of the two rollers. The both ends of the two rollers are rotatably attached to the both ends of the two rollers so that the two shafts are rotatable and pivotally supported on a plane formed by the two shafts. Driving means for driving the two shaft supporting means so as to move in such a direction that the distance between the two shaft supporting means is widened or narrowed mutually, and a side end portion of the two rollers where the driving means is not mounted. Fixing means for fixing the two shaft supporting means of It is characterized by comprising position detecting means for detecting a widthwise position of the packaging material web wound around the rollers of the book, and control means for driving the driving means according to an output signal of the position detecting means. Packaging material web feed position adjustment device.