JP3625220B2 - Packaging material web feed position adjustment device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a feed position adjusting device for a packaging material web, which is attached to adjust the position of a belt-shaped packaging material web in a liquid packaging device.
[0002]
[Prior art]
Conventionally, a liquid storage container in which a packaging material provided with polyethylene layers on both sides of paper is formed into a brick-like container and filled with liquid food such as milk or juice is used.
[0003]
On the other hand, a liquid packaging device has been developed that fills liquid food or the like into the liquid storage container while molding the liquid storage container. This liquid packaging device 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 forming it into a tubular shape and longitudinally extending on both sides thereof. Filling the inside with liquid while adhering the edges together, and then sealing and cutting the tubular packaging material web at equal intervals by means of a device called a jaw unit and forming it into a brick shape Of structure.
[0004]
Here, the band-shaped packaging material web transported in the liquid packaging apparatus needs to be accurately positioned in the width direction. This is because, if the packaging material web is meandering, there will be inconveniences such as the bonding position moving when the packaging material web is formed into a tubular shape and the longitudinal edges on both sides thereof are bonded together.
[0005]
As a positioning means, there is a method of positioning by bringing a positioning guide into contact with the longitudinal edge of the packaging material web.
[0006]
[Problems to be solved by the invention]
However, if 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, there is a risk that the printing will be deformed, or that it may become an obstacle when the both edges in the longitudinal direction of the packaging material web are bonded together. is there.
[0007]
The present invention has been made in view of the above-mentioned points, and the object thereof is not to mechanically press and guide the longitudinal edge of the packaging material web, and can easily position the packaging material web in the width direction. An object of the present invention is to provide a feed position adjusting device for a packaging material web.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, a packaging material web feed position adjusting apparatus according to the present invention includes two rollers installed in parallel around which a packaging material web is wound, and both ends of rotating shafts of the two rollers. A shaft support means mounted so as to be able to rotate both the rotation shafts and swingably on a plane formed by the both rotation shafts, and two shafts at the same side end portions of the two rollers Driving means for driving the supporting means so as to move the space between the two shaft supporting means in the direction of increasing or decreasing the distance between the two supporting means, and two end portions of the side where the driving means of the two rollers are not attached A fixing means for fixing the shaft supporting means, a position detecting means for detecting the position in the width direction of the packaging material web wound around the two rollers, and driving the driving means in accordance with an output signal of the position detecting means Control means for To.
[0009]
[Action]
When the position in the width direction of the packaging material web is shifted, this is detected by the position detection means, and the drive means is driven by the control means. The driving means widens or narrows the distance between the ends of the two rollers on which the driving means are attached. As a result, the packaging material web moves in the direction in which the widths of the two rollers are increased. As a result, the packaging material web can be adjusted to a normal position.
[0010]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Here, FIG. 4 is a schematic perspective view showing the processing steps of the packaging material web in the liquid packaging apparatus. As shown in the figure, a packaging material web 60 in which polyethylene layers are formed on both sides of a belt-like paper (in some cases, an aluminum layer is provided between the paper and the polyethylene layer) is wound around a roll 65.
[0011]
The packaging material web 60 fed out from the roll 65 is subjected to various treatments through several rollers 70 and then sterilized with hydrogen peroxide in the sterilization treatment unit 80. Further, the packaging material web 60 guided upward through several rollers 70 is then guided substantially vertically downward.
[0012]
The plate-shaped packaging material web 60 is gradually formed into a tubular shape by the upper molding rollers 90 and 93 arranged along the movement path of the packaging material web 60 guided vertically downward. Both longitudinal edges of the packaging material web 60 are bonded to each other by a welding device (not shown) to form a complete tube.
[0013]
The packaging material web 60 formed into a complete tube is filled with a desired liquid by a filling tube 105 inserted from above, and after passing through the support roller 100, a device called a jaw unit (not shown) is used. At the same time, they are sealed and cut at equal intervals, and at the same time are formed into a substantially brick shape, and are conveyed to a final folding device (not shown) by the belt conveyor 110 to form a substantially parallelepiped brick container.
[0014]
In the liquid packaging apparatus described above, the packaging material web 60 to be subjected to various treatments must always have a constant position in the width direction during its movement.
[0015]
FIG. 1 is a perspective view showing a packaging material web feed position adjusting apparatus 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 the inlet side position of the sterilization processing unit 80.
[0016]
As shown in FIG. 1, this packaging material web feed position adjusting device 1 includes two rollers 10 and 10 installed in parallel, and rotating shafts 13 and 13 of the two rollers 10 and 10 (in the same figure). (Not shown), four pivot support means 15 attached to both ends, drive means 17 attached between two pivot support means 15, 15 on one side of the two rollers 10, 10, and a packaging material web The position detecting means 19 for detecting the position of 60 and the control means 21 for driving and controlling the driving means 17 in accordance with the output signal of the position detecting means 19 are provided.
[0017]
Here, the four shaft support means 15 are both rotatable at both ends of the rotation shafts 13 and 13 (not shown in the figure) of the rollers 10 and 10, respectively. The rotary shafts 13 and 13 are attached so as to be pivotably supported on a plane formed by the rotary shafts 13 and 13.
[0018]
Then, rods 33 and 33 described below of the drive unit 17 are connected to the two shaft support units 15 and 15 on the side where the drive unit 17 of the two rollers 10 and 10 is attached.
[0019]
On the other hand, the two axial support means 15 and 15 at the side end portions where the driving means 17 of the two rollers 10 and 10 are not attached are between the axial support means 15 and 15 and the fixing means 25 (not shown). through the mounting plate 16 and 16 provided on and fixed to the fixing means 25 (not shown in drawing).
[0020]
Next, the driving means 17 projects from the stepping motor 29, the rotation-linear motion conversion mechanism 31 that converts the rotational motion of the drive shaft of the stepping motor 29 into linear motion, and both sides of the rotation-linear motion conversion mechanism 31. Both ends thereof are constituted by rods 33, 33 connected to the shaft support means 15, 15.
[0021]
When the stepping motor 29 is rotated in one direction, the rods 33 and 33 are in the C and C directions shown in the figure, that is, the distance between the shaft support means 15 and 15 to which the rods 33 and 33 are connected to each other. Driven in the spreading direction. On the other hand, when the stepping motor 29 is rotated in the reverse direction, both the rods 33 and 33 are driven in the direction (arrows D and D directions) in which the distance between the shaft support means 15 and 15 is reduced.
[0022]
Next, the position detection means (position detection sensor) 19 is attached to any position for detecting the position of the packaging material web 60 wound around the rollers 10 and 10.
[0023]
The control means 21 receives the output signal of the position detection means 19 and performs a predetermined calculation process, and outputs the output signal to the stepping motor 29 to control its driving.
[0024]
Next, the operation of the packaging material web feed position adjusting apparatus 1 will be described. 2 and 3 are schematic plan views for explaining the operation of the packaging material web feed position adjusting device 1 ( a schematic plan view of the packaging material web feed position adjusting device 1 shown in FIG . 1 as viewed from directly above. (The illustration of the mounting plate 16 is omitted) .
[0025]
As described in FIG. 1, as shown in FIG. 2, the two rollers 10 and 10 are pivotally supported by two pivotal support means 15 and 15, respectively, so as to be rotatable around the respective rotational shafts 13 and 13. At the same time, the shaft support means 15 and 15 on one end side are connected to the rods 33 and 33 of the drive means 17, and the shaft support means 15 and 15 on the other end side are attached to the fixing means 25.
[0026]
FIG. 2 shows a state in which both rollers 10 and 10 are in a parallel state, that is, the position in the width direction of the packaging material web 60 is normal. In this case, the packaging material web 60 is sent as it is and both rollers are fed. 10 and 10 only rotate.
[0027]
Next, when the position in the width direction of the packaging material web 60 moves to the fixing means 25 side, this is detected by the position detection means 19 (see FIG. 1), and the stepping motor 29 is driven, so that FIG. As shown, both rods 33 and 33 are driven in the direction of expanding each other (arrow C and C direction). As a result, the ends of the rollers 10, 10 on the side where the rods 33, 33 are attached are widened. For this reason, the packaging material web 60 moves in the spreading direction (arrow E direction). When the position detecting means 19 detects that the position is normal, the stepping motor 29 is driven in the reverse direction to return both rollers 10 and 10 to the original positions shown in FIG.
[0028]
On the other hand, when the position in the width direction of the packaging material web 60 has moved to the driving means 17 side, the direction in which the rods 33 and 33 are narrowed to each other as shown in FIG. ) To drive. As a result, the packaging material web 60 is moved in the direction toward the fixing means 25 (in the direction of arrow F), and when the normal position is reached, the rollers 10 and 10 are similarly returned to the original positions shown in FIG.
[0029]
In the said Example, although the example which installed the feed position adjustment apparatus 1 of the packaging material web concerning this invention in the entrance side position of the sterilization process part 80 shown in FIG. 4 was shown, the packaging material web 60 is a strip | belt-shaped state, and Needless to say, it may be installed at other locations in the liquid packaging device.
[0030]
【The invention's effect】
As described in detail above, according to the packaging material web feed position adjusting device of the present invention, the longitudinal edge of the packaging material web is provided as in the conventional positioning guide described in paragraph “0005”. Therefore, the positioning material web can be easily positioned in the width direction without causing the positioning guide to abut, and hence the longitudinal edge of the packaging material web is not bent .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a packaging material web feed position adjusting apparatus 1 according to the present invention.
FIG. 2 is a schematic plan view for explaining the operation of the packaging material web feed position adjusting apparatus 1. FIG.
FIGS. 3A and 3B are schematic plan views for explaining the operation of the packaging material web feed position adjusting apparatus 1. FIGS.
FIG. 4 is a schematic perspective view showing a process of processing a packaging material web in the liquid packaging apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Packaging material web feed position adjustment apparatus 10, 10 Roller 13, 13 Rotating shaft 15 Shaft support means 17 Drive means 19 Position detection means 21 Control means 25 Fixing means 29 Stepping motor 31 Rotation-linear motion conversion mechanism 33, 33 Rod 60 Packaging material web 65 Roll 70 Roller

Claims (1)

The packaging in a liquid packaging apparatus in which a strip-shaped packaging material web wound around a roll is pulled out and guided to a plurality of rollers, subjected to various treatments, formed into a cylindrical shape, and filled with a liquid therein. The material web is disposed at a predetermined position in a belt-like state,
Two rollers installed in parallel for winding the packaging material web;
Shaft support means attached to both ends of the rotation shafts of the two rollers so as to be able to rotate both the rotation shafts and swingably support on a plane formed by the both rotation shafts;
Driving means for driving the two shaft support means at the same side end portions of the two rollers so as to move in a direction in which the distance between the both shaft support means is increased or decreased; and the two rollers A fixing means for fixing the two shaft support means at the side end portion to which the roller drive means is not attached,
Position detecting means for detecting a position in the width direction of the packaging material web wound around the two rollers;
And a control means for driving the drive means in accordance with an output signal of the position detection means.

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