JP2002214055A - Method and device for measuring seal-breaking force at pouring opening of span roofed paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably and surely measure, with precision, the seal-breaking force of a pouring opening of a span roofed paper container. SOLUTION: There are provided a jig 10 which fixes a paper container 1 by engaging with the inside of the upper part of the span roofed paper container 1; cut at a cylindrical body 3; a push-out plate 11 whose lower end is rotatably supported on the jig 10 parallel to a corner between a span wall forming panel 8, which is to be the opening 7 of the paper vessel 1 fixed to the jig 10 and a body panel 2 while close to it, and which rotates to abut the inside surface of the panel 8 and then push it out to break a seal of the opening 7; a rotational drive mechanism 16 which rotates the push-out plate 11 to push out the panel 8; and a seal-breaking force detecting means 25 which detects a seal-breaking force based on a load when the push-out plate 11 is rotated by the rotational drive mechanism 16. The panel 8 which is to be the opening 7 of the paper container 1 fixed to the jig 10 is pushed out by the push-out plate 11 to break the seal of the opening 7, and a seal-breaking force detecting means 25 detects the push-out load at that time, for measuring the seal-breaking force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring the opening force of a spout in a gabled roof paper container for containing a beverage such as milk or juice.

[0002]

2. Description of the Related Art Conventionally, as a beverage paper container represented by a milk carton, a gable roof type paper container (Göbel top type).
Is widely used. This gable roof paper container 1 is made of a paperboard material laminated on both sides with a thermoplastic resin, is provided with four body panels 2, and has a cylindrical body having a rectangular cross section whose edges are joined by vertical seal panels. A pair of gable roof forming panels 5 having a strip-shaped outer sealing panel 4 at the upper end on the upper end of the body panel 2 and facing each other.
And a pair of end wall forming panels 8 having a strip-shaped inner seal panel 6 having a height lower than that of the outer seal panel 4, one of which is a spout 7 and is opened facing each other. The end wall forming panel 8 is folded between the pair of gable roof forming panels 5, and the opposing surfaces of the adjacent outer seal panel 4 and inner seal panel 6 are heat-sealed, and the outer seal panel 4 is closed. 1 and the inner seal panel 6 are also heat-sealed to form the top 9 (FIG. 1A).

[0003] A gable roof paper container 1 constructed as described above.
When the spout 7 is opened, first, the heat-sealed opposing surfaces of the outer seal panel 4 and the inner seal panel 6 on the side of the rear wall forming panel 8 which becomes the spout 7
The heat-sealed opposing surfaces are peeled off from each other and pushed open toward the gable roof forming panel 5 side (FIG. 1B), and the corners of the gable wall forming panel 8 and the left and right gable roof forming panels 5 are mutually put with fingers. By pressing in the approaching direction, the outer sealing panel 4 on the side of the end wall forming panel 8 which becomes the spout 7
The facing surfaces of the inner seal panel 6 and the inner seal panel 6 which are heat-sealed are peeled off, and the spout wall forming panel 8 is projected outward to open the spout 7 (FIG. 1C).

[0004] In the heat seal portion on the side of the gable wall forming panel 8 which becomes the spout 7 of the gable roof type paper container 1,
Naturally, the integrity of the seal is required to prevent leakage of the filler, but at the same time, easy opening is also required. Sealing properties and easy-opening properties are contradictory, and if the sealing properties are increased, it becomes difficult to open, whereas if the opening properties are improved, the sealing properties are weakened. Therefore, in particular, it is desirable that the sealing strength of the sealing portion of the spout 7 is the minimum strength that can prevent leakage, and that the sealing strength does not exceed that as much as possible.

[0005] In order to obtain such a seal strength and to ensure the stability of quality, a leak test and a measurement test of the opening force of the spout are conducted to obtain a seal strength that balances the sealability and the easy-openability.

[0006] The sealing strength is greatly affected by the heating temperature, the conditions for forming the easy-open area, the sealing mechanism of the filling molding machine, and the like. Is important, and it is possible to find out the correlation between the heating temperature, the conditions for forming the easy-open area, the sealing mechanism of the filling molding machine, etc. through such a leak test and the measurement of the opening force. The conditions for forming the region, the sealing mechanism, and the like can be selected, and the quality can be stabilized.

In the above-mentioned test, when measuring the opening force of the spout, conventionally, generally, from the state of FIG. Attach a towing string via a wire-like hook or adhesive tape, pull it from the outside with a tensile tester, open it, measure the tension at the time of opening, and consider the value as the opening force. I have.

[0008]

However, in the above-described method of measuring the opening force using the tensile tester, in the step of attaching the traction cord to the end wall forming panel 8 serving as the spout 7,
Because the container is a paper base, the tow strap mounting portion of the wife wall forming panel 8 is easily damaged and cannot be measured, and the mounting position and angle of the tow strap are likely to have an artificial error. In addition, there is a problem that the measurement operation is troublesome.

It is an object of the present invention to measure the opening force of a spout in a gabled roof paper container by eliminating an artificial measurement error, stably and reliably performing accurate measurement. An object of the present invention is to provide a method and an apparatus for measuring an opening force of a spout in a gabled roof paper container that facilitates work.

[0010]

In order to achieve the above object, the invention according to claim 1 is made of a paperboard material laminated on both sides with a thermoplastic resin, has four body panels, and has a longitudinal seal. A pair of gable roof forming panels facing each other with a band-shaped outer seal panel at the top at the upper end of the body panel, the edges of which are joined to form a tubular body having a rectangular cross section at the upper end of the body panel, A pair of gable wall forming panels which have a band-shaped inner seal panel on the upper side and one of which is a spout and is opened facing each other are continuously provided, and the gable wall forming panel is provided between the pair of gable roof forming panels. A gable that is folded and heat sealed at a predetermined position to form a top portion by being heat-sealed at a predetermined position, thereby forming a spout by forming a spout wall forming panel serving as a spout. Shop In the method for measuring the opening force of the spout in the paper container, in the state where the facing surfaces of the outer seal panel and the inner seal panel that are heat-sealed on the side of the end wall forming panel that is the spout of the top are peeled off, The present invention is characterized in that the spout wall forming panel serving as the spout is pushed out from the inside of the paper container and opened, and the pushing force at this time is measured as the opening force.

According to this method, as a means for opening the spout for measuring the opening force of the spout, the spout wall forming panel serving as the spout is pushed out from the inside of the paper container and opened. Compared with the conventional method of opening by pulling with a towing string, there is no possibility of damaging the rear wall forming panel, the opening can be surely performed, and an artificial measurement error can be avoided. The measurement can be performed stably, and the measurement work is also facilitated.

According to a second aspect of the present invention, there is provided a cylinder made of a paperboard material having thermoplastic resin laminated on both sides, comprising four body panels, and having a rectangular cross section having edges joined by a vertical seal panel. A pair of gable roof forming panels facing each other with a band-shaped outer seal panel at the top, and a band-shaped inner seal panel at the top, facing each other. Either one becomes a spout and a pair of gable wall forming panels that are opened are connected in series, the gable wall forming panel is folded between the pair of gable roof forming panels, and each seal panel is heated at a predetermined position. The top is formed by being sealed and sealed,
In the measuring device of the opening force of the spout in the gable roof type paper container configured to form the spout by opening the spout wall forming panel serving as the spout, the inside of the upper part of the paper container whose tubular body is cut off A jig that fits into the
On the jig, close to, and parallel to, a corner of a marble wall forming panel serving as a spout of a paper container fixed to the jig and a trunk panel connected to the marble wall forming panel. The lower end is freely supported, the extruding plate is rotated to abut on the inner surface of the end wall forming panel, extrudes it, and opens the spout, and the rotary drive for rotating the extruding plate to extrude the end wall forming panel A mechanism and an opening force detecting means for detecting an opening force from a load when the extruding plate is rotated by the rotation driving mechanism are provided.

According to this configuration, when the upper portion of the paper container whose cylindrical body is cut is fitted and fixed to the jig, and the extruding plate is rotated by driving the rotation drive mechanism, the extruding plate is spouted. Abuts against the inner surface of the end wall forming panel to be extruded and the spout is opened. At this time, the extruded plate is supported in parallel with the corner at a position where the lower end rotatably supported is close to the corner between the spout wall forming panel and the trunk panel which are the spouts. No excessive force is applied to the pressing on the wife wall forming panel by the above, and therefore, there is no possibility of damaging the wife wall forming panel by the pressing, and the pressing surface is always pressed in a certain direction, so that the extruding plate is rotated. With the opening force detecting means for detecting the opening force from the load at the time of the opening, it is possible to measure the opening force accurately and stably and reliably. It can be performed by a simple operation such as fitting the upper part of the paper container having the cut cylindrical body and driving the rotation drive mechanism.

According to a third aspect of the present invention, there is provided a rotary drive mechanism for rotating the extruding plate according to the second aspect to push out the rear wall forming panel, comprising: a drive source having a lifting rod; A link mechanism for transmitting the lifting / lowering movement of the rod to the push plate and rotating the push plate.The opening force detecting means is disposed in a part of the link mechanism, and the push plate is rotated by the rotary drive mechanism. The opening force is detected from the load applied to the link mechanism when the link mechanism is opened.

With this configuration, when the drive source of the rotary drive mechanism is driven to raise and lower the elevating rod, the extruded plate is pushed via the link mechanism, and the extruded plate is rotated, thereby forming the spout wall forming panel. It comes into contact with the inner surface and is pushed out to open the spout.

According to a fourth aspect of the present invention, there is provided a rotary drive mechanism for rotating the extruding plate according to the second aspect and extruding the end wall forming panel, wherein a fan-shaped disk link is provided in a vertical direction on the back surface of the extruding plate. An upright side is fixedly attached to the extruding plate, and one end of a wire is fixed to a lower end portion of the arc-shaped outer peripheral edge of the fan-shaped disc link. A wire link mechanism for pulling the lower end of the arc-shaped outer peripheral edge of the link to rotate the pushing plate, and a load detecting pulley constituting a part of the opening force detecting means hooks a wire in the middle of the wire link mechanism. When the push plate is rotated by the rotation drive mechanism, the opening detection force is detected from the pulling load of the wire of the wire link mechanism received by the load detection pulley. Characterized in that the.

With this configuration, when the drive source is driven to rotate the pulley, the wire is wound by the pulley, whereby the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link is pulled, and the extruded plate rotates. Then, the inner wall of the spout wall forming panel, which is a spout, is pushed out of the panel and the spout is opened.

According to a fifth aspect of the present invention, in the wire link mechanism according to the fourth aspect, the wire having one end fixed to a lower end portion of the arc-shaped outer peripheral edge portion of the fan-shaped disk link is a circle of the fan-shaped disk link. It is hung on the arc-shaped outer peripheral portion and guided upward, then is hung on the vertex pulley provided on the top of the jig, guided downward, and then hung on the load detection pulley constituting a part of the opening force detection means. And is guided upward by being wound around the pulley and then guided upward, and then the other end is fixed to the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link via an intermediate pulley. I do.

With this configuration, when the drive source is driven to rotate the pulley, the wire is wound by the pulley and is sent out by the amount wound at the same time, and the drive source is driven to drive the fan-shaped disk link. When the pulley is rotated in the direction of winding the wire so as to pull the lower end of the arc-shaped outer peripheral portion, the lower end of the arc-shaped outer peripheral portion of the fan-shaped disc link is pulled, and the extruded plate rotates, and the spout and Abut the inner wall of the end wall forming panel, push it out, open the spout, and pull the pulley in the opposite direction, that is, in the direction of winding the wire so as to pull the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link. When rotated, the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link is pulled and the extruded plate rotates to return to the original state, so that it is possible to prepare for the next operation. , It is possible to easily measure the work of opening force of the spout in the gable paper container.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method and an apparatus for measuring the opening force of a spout in a gable roof paper container according to the present invention will be described below. 2 to 5 show a first example of an embodiment of a measuring device used for carrying out a measuring method for measuring the opening force of a spout in the gable roof paper container shown in FIG. 1, and FIG. FIG. 3 is a vertical cross-sectional view of the measuring device in a state where the extruded plate is at the extrusion rotation standby position, FIG. 3 is a plan view of FIG. 2, FIG. FIG. 5 is a plan view of FIG.

In FIG. 1, reference numeral 10 denotes a jig for fixing the paper container 1 by fitting from below into the upper portion of the paper container 1 whose cylindrical body is cut, and reference numeral 11 denotes a rotatably supported jig. An extruding plate which rotates to abut the inner surface of the end wall forming panel 8 which becomes the spout 7 of the paper container 1 and pushes it out to open the spout 7.

In the present embodiment, the outer shape of the jig 10 is similar to the inner shape of the paper container 1, and when the jig 10 is fitted into the paper container 1, the outer surface thereof contacts the inner surface of the paper container 1. It consists of a tubular body 12 that contacts and fixes the paper container 1, and the upper end of the tubular body 12 abuts on the inner surfaces of the gable roof forming panel 5 and the gable wall forming panel 8 that constitute the top 9 of the paper container 1. It has a quadrangular pyramid-shaped top wall 13. Then, 4 constituting the top wall 13
One of the walls is hollowed and opened, and the opening is provided with the extrusion plate 11 formed substantially in the same shape as the wall, and the lower end of the extrusion plate 11 is the upper end of the cylindrical body 12. Is rotatably supported by a shaft 14 extending parallel to one side of the shaft.
Also, on one side surface of the tubular body 12, there is provided a holding piece 15 for holding the body panel 2 of the paper container 1 fitted on the outer periphery of the tubular body 12 between the one side surface of the tubular body 12. Have been.

Reference numeral 16 denotes a rotation drive mechanism for rotating the extrusion plate 11 and extruding the end wall forming panel 8 serving as the spout 7. In this example, the rotation drive mechanism 16 is a lifting rod 17.
And a link mechanism 19 for transmitting the elevating movement of the elevating rod 17 to the pushing plate 11 and rotating the same. The link mechanism 19 is connected to the push plate 11.
A fan-shaped disk link 20 provided on the back surface of the disk so as to stand upright with respect to the extruding plate 11 in the rotation direction, one end of which is rotatably mounted on the fan-shaped disk link 20 by a shaft 21, and A rod-shaped link 23 rotatably mounted on a tip of a shaft 17 by a shaft 22. The extruding plate 11 rotates through the rod-shaped link 23 and the fan-shaped disk link 20 when the elevating rod 17 is moved up and down. Has become. The rotation of the extruding plate 11 is at a position where the extruding plate 11 forms one wall of the quadrangular pyramid top wall 13 together with the three walls constituting the top wall 13 when the elevating rod 17 is at the lowest position. (FIG. 2), and when the lifting rod 17 is at the highest position, the push plate 11 pushes out the spout wall forming panel 8 serving as the spout 7 and is set at the position where the spout 7 is opened. .

In the fan-shaped disk link 20,
In order to smoothly and surely receive the transmission of the movement of the rod-like link 23, two plate bodies are arranged in parallel, and one end of the rod-like link 23 is inserted between the two plate bodies so that the shaft 2
1 is attached to the shaft.

The drive source 18 for raising and lowering the lifting rod 17 includes an electric motor, air pressure, hydraulic pressure, water pressure, electromagnetic force,
There is a cylinder powered by a gear mechanism or the like. In this example, a cylinder powered by an electric motor is used. Reference numeral 24 denotes an electric cylinder controller.

Reference numeral 25 denotes an opening for detecting a force required when the spout 7 is opened by pushing out the spout wall forming panel 8 serving as the spout 7 from the load when the extruding plate 11 is rotated by the rotary drive mechanism 16. It is a force detecting means.

In this embodiment, a load cell 26 serving as a load sensor is disposed as a part of the link mechanism 19 as the opening force detecting means 25, and the load detected by the load cell 26, that is, the force for pushing out the end wall forming panel 8 is opened. A configuration in which force is displayed on the detection display 27 is adopted.

The measurement of the opening force of the spout in the gable roof paper container by the opening force measuring device constructed as described above is as follows.
This is performed as follows.

First, the cylindrical body 3 of the paper container 1 whose opening force is to be measured is cut to prepare the paper container 1. On the other hand, in the opening force measuring device,
Is lowered to the lowest position. In this state, the end wall forming panel 8 which forms a part of the top 9 and forms the spout 7 on the outer periphery of the cylindrical body 12 constituting the jig 10 of the paper container 1 faces the extruded plate 11. (Fig. 6)
The gable roof forming panel 5 and the gable wall forming panel 8 forming the top 9 are fitted until the inner surfaces of the gable roof forming panel 8 contact the top wall 13 at the upper end of the tubular body 12 (FIG. 7).

The paper container 1 fitted to the outer periphery of the cylindrical body 12 is
The inner surface is supported by the outer surface of the tubular body 12, and one of the body panels 2 is fixed to the tubular body 12 by being sandwiched between one side surface of the tubular body 12 and the holding piece 15. State.

Next, the heat-sealed opposing surfaces of the outer seal panel 4 and the heated opposing surfaces of the inner seal panel 6 on the end wall forming panel 8 side serving as the spout 7 of the paper container 1 are separated. Peel off the gable roof forming panel 5
Push open to the side (Fig. 8).

In this state, when the drive source 18 of the rotary drive mechanism 16 is driven to raise and lower the elevating rod 17, the push plate 11 is pushed through the bar-shaped link 23 and the fan-shaped disk link 20 constituting the link mechanism 19. Then, the paper container 1 rotates around a shaft 14 passed in parallel with one side of the upper end thereof, and comes into contact with the inner surface of the end wall forming panel 8 which becomes the spout 7 of the paper container 1 and pushes it out. As a result, the facing surfaces of the outer seal panel 4 and the inner seal panel 6 on the side of the end wall forming panel 8 which is the heat-sealed spout 7 are peeled off, and the end wall forming panel 8 projects outward, and the spout is formed. 7 is opened (FIG. 9).

A load cell 26 serving as a load sensor is disposed in the link mechanism 19 for rotating the push plate 11 in the pushing direction, and the load detected by the load cell 26, that is, the force for pushing the end wall forming panel 8 is opened. , The extruding plate 11 is rotated through the link mechanism 19 to push out the spout wall forming panel 8 serving as the spout 7, and the load when the spout 7 is opened is changed to the load cell 26. And the detected load is displayed on the detection display 27 as the opening force of the spout 7 of the paper container 1. Thus, the opening force of the spout 7 of the paper container 1 is measured.

At the time of measuring the opening force, the extruded plate 11 for extruding the end wall forming panel 8 has the shaft 14 rotatably supporting the lower end thereof extending parallel to one side of the upper end of the cylindrical body 12. The rotation axis is parallel to the corner at a position close to the corner between the wall-forming panel 8 and the body panel 2, which is the spout 7, so that the extrusion plate 11 can press the pressing against the wall-forming panel 8. Since an excessive force is not applied, and there is no possibility that the wife wall forming panel 8 is damaged by the pressing, and a certain surface is always pressed in a certain direction,
The spout 7 can be opened reliably and in a stable state, so that accurate measurement can be stably performed.

Further, in the apparatus for measuring the opening force of the spout in the gable roof type paper container of the present embodiment, the rotary drive mechanism 16 for rotating the extruding plate 11 is composed of the drive source 18 and the link mechanism 19. The apparatus for measuring the opening force of the spout in the paper container can be made compact, and the rotation drive mechanism 16 is excellent in durability.

FIGS. 10 to 15 show a second embodiment of the measuring device used for carrying out the measuring method for measuring the opening force of the spout in the gable roof paper container shown in FIG. 10 is a partially omitted perspective view of the measuring device in a state where the extruded plate is in an extrusion rotation standby position, FIG. 11 is a partially omitted front view showing a state where the jig of FIG. 10 is disassembled, and FIG. 12 is an enlarged view of the extruded plate. FIG. 13 is an enlarged rear view of the extruded plate, FIG.
4 is an explanatory view showing the internal structure of the measuring device in a state where the extruded plate in FIG. 10 is in the extrusion rotation standby position, and FIG. 15 shows the internal structure of the measuring device in a state in which the extruded plate in FIG. 10 is rotated in the extrusion direction. FIG.

In this embodiment, a jig 28 for fixing the paper container 1 by fitting it from below into the upper portion of the paper container 1 whose cylindrical body has been cut.
Has an outer shape similar to the inner shape of the paper container 1;
When fitted inside, the outer surface thereof is formed of a columnar body that abuts against the inner surface of the paper container 1 to fix the paper container 1, and a gable roof forming the top 9 of the paper container 1 is formed at the upper end of the jig 28. It has a quadrangular pyramid-shaped top wall in contact with the inner surfaces of the panel 5 and the end wall forming panel 8. The jig 28 is composed of two jig parts 28a and 28b that are vertically divided into two parts from the center.

In the case of the extruded plate 30, the top wall 2
9, the fan-shaped disk link 31 is formed in substantially the same shape as one of the walls 29a of the four walls constituting the extruding plate 30. 31a is fixed so as to be integrated. At the apex of the fan-shaped disc link 31, mounting shafts 32 are provided on both sides thereof in parallel with the lower end of the extrusion plate 30 so as to protrude.

On the opposing surfaces of the two jig parts 28a and 28b, one of the corners between the trunk and the top wall of the jig 28 constituted by the jig parts 28a and 28b is located near one corner. A hole 33 is formed in parallel with the corner side. The mounting shaft 32 is rotatably inserted into the hole 33, and the extruding plate 30 is rotatably supported by the jig 28.

The pushing plate 30 integrated with the fan-shaped disk link 31 rotatably supported by the jig 28 is rotated by the rotation of the fan-shaped disk link 31,
The downward rotation of the fan-shaped disc link 31 overlaps with the top wall 29 of the jig 28 composed of the jig parts 28a and 28b, and the upward rotation causes the jig 28 to move upward around the mounting shaft 32. It rotates in a direction away from the top wall 29. The fan-shaped disk link 3
A guide groove 34 in which a wire to be described later is hung is formed in the circular arc-shaped outer peripheral edge 31b in the circular arc direction.

The rotation drive mechanism 35 for rotating the extrusion plate 30 to push out the end wall forming panel 5 includes a lower end 31 of an arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31.
c, and a wire link mechanism 39 including a drive source 38 having a pulley 37 for winding the wire 36, and the fan-shaped disk link 31 is wound by the pulley 37. The extruding plate 30 is rotated by pulling a lower end portion 31c of the arc-shaped outer peripheral edge portion 31b.

In the middle of the wire link mechanism 39, a load detecting pulley 41 constituting a part of the opening force detecting means 40 is arranged with a wire 36 hung thereon.
5, when the extrusion plate 30 is rotated, the load detection pulley 4
The opening force is detected from the tensile load of the wire 36 of the wire link mechanism 39 that is received by the wire link mechanism 1.

The wire link mechanism 39 will be described in more detail. One end of a wire 36 is fixed to the lower end 31c of the arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31. It is hung on the guide groove 34 formed in the arc-shaped outer peripheral portion 31b and is guided upward. Then, it is hung from above on the vertex pulley 42 provided on the top of the jig part 28a constituting the jig 28, and And the load detection pulley 4 which constitutes a part of the opening force detection means 40 disposed below.
1 is guided upward from the lower side, and then wound around the pulley 37 disposed above the load detection pulley 41 from above and guided upward. Then, the other end is fan-shaped through the intermediate pulley 43. The disk link 31 is fixed to the upper end 31d of the arc-shaped outer peripheral edge 31b.

The wire 36 having one end fixed to the lower end 31c of the arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31 and the other end fixed to the upper end 31d of the arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31 is tensioned. A part of the wire 36 wound around the pulley 37 is fixed to the pulley 37, and the rotation of the pulley 37 is transmitted to the wire 36 without fail. I have. When the pulley 36 is rotated clockwise in FIG. 14, the lower end 31 c of the arc-shaped outer peripheral edge 31 b of the fan-shaped disc link 31 is pulled, and the mounting shaft 32 provided at the vertex of the fan-shaped disc link 31 is pulled. The fan-shaped disk link 31 rotates counterclockwise at the center, and the rotation of the fan-shaped disk link 31 causes the extruded plate 30 integrated with the fan-shaped disk link 31 to move in the pushing direction, that is, separate from the top wall 29 of the jig 28. And pulley 37
Is rotated counterclockwise, the fan-shaped disc link 31 rotates clockwise, and the extruded plate 30 is moved to the top wall 29 of the jig 28.
(The extrusion rotation standby position). An electric motor is used as the drive source 38 for rotating the pulley 37, and the rotation direction and the amount of rotation of the pulley 37 are controlled by the motor controller 44.

The opening force detecting means 40 includes:
The load detecting pulley 41 is provided on a lever 46 using a cantilever load cell 45, and the pulling load of the wire 36 received by the load detecting pulley 41 when the pulley 37 is rotated to rotate the extruding plate 30 in the pushing direction. Is detected, and the detected pulling load is displayed on the detection display 47 as the opening force.

The jig part 28a and the jig part 28
The jig part 28a and the jig part 28
b, when the opposing surfaces are overlapped with each other,
A concave portion is provided which forms a space in which the intermediate pulley 43, the fan-shaped disc link 31, the pulley 37, and the load detecting pulley 41 can be included. The top pulley 42 and the intermediate pulley 43
Are provided on the jig part 28a side in this example, but may be provided on the jig part 28b side. The fan-shaped disc link 31, the pulley 37 and the load detecting pulley 41 are arranged between the jig parts 28a and 28b. Also, on one side of the jig parts 28a and 28b,
The body panel 2 of the paper container 1 fitted to the outer periphery of the jig 28 is
Nipping piece (not shown) for nipping between one side of the jig 28
Is provided.

The measurement of the opening force of the spout in the gable roof paper container by the opening force measuring device of the present embodiment configured as described above is performed as follows.

First, similarly to the first example, the cylindrical body 3 of the paper container 1 whose opening force is to be measured is cut, and the paper container 1 is prepared. On the other hand, in the opening force measuring device, the extruded plate 30 is placed on the top wall 29 of the jig 28.

In this state, the paper container 1 is positioned on the outer periphery of the jig 28 so that the end wall forming panel 8 which forms a part of the top 9 and becomes the spout 7 faces the extrusion plate 30. Then, the gable roof forming panel 5 and the gable wall forming panel 8 forming the top 9 are fitted together until the inner surfaces of the panel 8 contact the top wall 29 at the upper end of the jig 28. The paper container 1 fitted to the outer periphery of the jig 28
The inner surface thereof is supported by the outer surface of the jig 28, and one of the body panels 2 is fixed to the jig 28 by being clamped between one side surface of the jig parts 28a and 28b and the clamping piece. Becomes

Further, instead of fixing the paper container 1 by the holding piece, a square frame having a diameter similar to the outer shape of the body of the jig 28 and slightly larger than the outer shape of the body is fitted to the jig 28. It can also be fixed by covering the outer surface of the container 1.

Next, the heat-sealed opposing surfaces of the outer seal panel 4 and the heated opposing surfaces of the inner seal panel 6 on the end wall forming panel 8 serving as the spout 7 of the paper container 1 are compared. Peel off the gable roof forming panel 5
Push open to the side (see FIG. 8 of the first example).

In this state, the electric motor, which is the drive source 38 of the rotary drive mechanism 35, is driven, and the pulley is pulled in the direction of winding the wire 36 so as to pull the lower end 31c of the arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31. When the predetermined rotation amount controlled by the motor controller 44 is rotated, the arc-shaped outer peripheral edge 3 of the fan-shaped disc link 31 is rotated.
The lower end portion 31c of 1b is pulled, and the extruding plate 30 rotates, abuts against and pushes out the inner surface of the end wall forming panel 8 serving as a spout. As a result, the outer sealing panel 4 on the side of the end wall forming panel 8 that becomes the heat-sealed spout 7.
Then, the facing surfaces of the inner seal panel 6 are peeled off, the end wall forming panel 8 projects outward, and the spout 7 is opened.

At this time, a load provided between the apex pulley 42 and the pulley 37 and below the apex pulley 42 and the pulley 37 and provided on the lever 46 of the cantilever load cell 45 as the opening force detecting means 40. Since the wire 36 of the wire link mechanism 39 is hung on the detection pulley 41,
The load applied when the pushing plate 30 abuts against and pushes out the inner surface of the end wall forming panel 8 acts as a pulling force of the load detecting pulley 41, and the pulling load of the wire 36 received by the load detecting pulley 41 is detected. The detected tensile load is displayed on the detection indicator 47 as the opening force.
Thus, the opening force of the spout 7 of the paper container 1 is measured.

In measuring the opening force, mounting shafts 32 provided on both sides of the apex portion of the fan-shaped disc link 31 integrated with the extruding plate 30 for pushing out the end wall forming panel 8 are attached to the extruding plate 30. The mounting shaft 32 projects in parallel with the lower end, and the two mounting jig parts 28a, 28
b, is rotatably inserted in a hole 33 formed near the corner of the body and top wall of the jig 28 and parallel to the corner side formed on the opposing surface of b. At the position close to the corner between the rear wall forming panel 8 and the trunk panel 2, the corner is parallel to the corner, whereby an excessive force is not applied to the pressing of the rear wall forming panel 8 by the extruded plate 30, and therefore, the pressing There is no danger of damaging the wall forming panel 8, and since a certain surface is always pressed in a certain direction, the spout 7 can be opened reliably and in a stable state, so that accurate measurement can be stably performed. You can do it.

When the measurement of the opening force of the spout in the gabled roof paper container is completed in this manner, the wire 36 is wound in a direction in which the wire 36 is wound so as to pull the upper end 31 d of the arc-shaped outer peripheral edge 31 b of the fan-shaped disc link 31. When the pulley 37 is rotated, the upper end 31d of the arc-shaped outer peripheral edge 31b of the fan-shaped disc link 31 is pulled, and the extruded plate 30 rotates to return to the original state, so that the next measurement can be prepared. it can.

Further, the apparatus for measuring the opening force of the spout in the gable roof type paper container of this embodiment has a simple structure because the rotation drive mechanism 35 for rotating the extrusion plate 30 comprises the wire link mechanism 39. In addition, the cost of the apparatus can be reduced.

[0057]

As described above, according to the method for measuring the opening force of the spout in the gabled roof paper container according to the first aspect, the outer sealing panel on the side of the spout wall forming panel serving as the spout at the top portion. And, with the heat-sealed opposed surfaces of the inner seal panel being peeled off from each other, the spout wall forming panel serving as the spout is pushed out from the inside of the paper container and opened, and the pushing force at this time is measured as the opening force. Therefore, when opening the spout for measuring the opening force, compared to the conventional method of opening by pulling with a traction string, there is no possibility of damaging the end wall forming panel, and the opening can be reliably performed. Since an artificial measurement error can be avoided, accurate measurement can be stably performed, and the measurement operation is also facilitated.

According to the apparatus for measuring the opening force of the spout in the gable roof type paper container according to the second aspect, the upper part of the paper container is fixed by fitting into the upper part of the paper container whose tubular body has been cut. A jig and, on the jig, close to a corner of a wife wall forming panel serving as a spout of a paper container fixed to the jig and a trunk panel connected to the wife wall forming panel; A lower end is supported in a parallel and rotatable manner, and an extruding plate which rotates and abuts against the inner surface of the end wall forming panel to push out the opening and open the spout, and to rotate the extruding plate to extrude the end wall forming panel. A rotation drive mechanism for rotating the push plate by the rotation drive mechanism, and an opening force detecting means for detecting an opening force based on a load when the extruding plate is rotated by the rotation drive mechanism. Fit the upper part of the paper container whose cylindrical body is cut By rotating the extruding plate by driving the rotation drive mechanism, the rotating extruding plate can extrude the spout wall forming panel and open the spout. At this time, the extruding plate can rotate freely. The lower end is supported in parallel with the corner at a position close to the corner between the spout wall forming panel and the trunk panel, which is a spout, so that the extruded plate presses the spout wall forming panel. No force is applied to the wall, so there is no danger of damaging the wall-forming panel by pressing, and since a certain surface is always pressed in a certain direction, the opening force is reduced from the load when the extrusion plate is rotated. With the opening force detecting means for detecting the opening force, accurate opening force measurement can be performed stably. In measuring the opening force, the upper part of the paper container whose cylindrical body is cut into the jig is fitted to the jig. Combined rotation drive mechanism It can be performed by a simple operation such be driven.

According to the third aspect of the present invention, the rotary drive mechanism for rotating the push-out plate and extruding the end wall forming panel has an elevating rod. A drive mechanism and a link mechanism for transmitting the lifting movement of the lifting rod by the drive source to the push plate and rotating the push plate. The opening force detecting means is arranged in a part of the link mechanism, and the rotation is performed. Since the opening force is detected from the load applied to the link mechanism when the push plate is rotated by the drive mechanism, when the drive source of the rotary drive mechanism is driven to raise and lower the lifting rod, the push plate is moved through the link mechanism. Is pushed to rotate the extruding plate, and can be brought into contact with the inner surface of the end wall forming panel serving as a spout to push out the spout to open the spout, and a rotary drive mechanism for rotating the extruding plate is a driving source. And link machine Since consists with, it is possible to reduce the size of the measuring device of the unsealing force of the spout in the gable roof paper container, excellent durability of the rotary drive mechanism.

According to the apparatus for measuring the opening force of the spout in the gabled roof paper container according to claim 4, the rotary drive mechanism for rotating the extruded plate and extruding the end wall forming panel includes a back surface of the extruded plate. In the vertical direction, a fan-shaped disk link is mounted upright on the extruded plate with its upper side fixed and attached, and one end of a wire is fixed to the lower end of the arc-shaped outer peripheral edge of the fan-shaped disk link, and a pulley is used. A wire link mechanism that pulls the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link by winding the wire to rotate the push plate, and constitutes a part of the opening force detecting means in the middle of the wire link mechanism. The load detecting pulley to be wound is arranged with a wire, and the wire of the wire link mechanism received by the load detecting pulley when the extruding plate is rotated by the rotary drive mechanism. Since the opening force is detected from the tension load, when the drive source is driven and the pulley is rotated, the wire is wound by the pulley, thereby pulling the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link. The extruded plate is rotated to contact the inner surface of the spout wall forming panel serving as a spout, thereby extruding the spout and opening the spout, and a rotation drive mechanism for rotating the extruded plate is provided by a wire link mechanism. Therefore, the configuration is simple and the cost of the apparatus can be reduced.

According to a fifth aspect of the present invention, the wire link mechanism has one end fixed to the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link. The wire is hooked on the arc-shaped outer peripheral edge of the fan-shaped disc link and is guided upward, then is hooked on a vertex pulley provided on the top of the jig and guided downward, and then a part of the opening force detecting means. And is guided upward by being wound around the pulley and then guided upward through the intermediate pulley, and the other end is connected to the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link. Since it is fixed, when the pulley is rotated in the direction of winding the wire to pull the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link, the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link is When the extruding plate is rotated, the extruding plate rotates and abuts against the inner surface of the end wall forming panel serving as a spout to push out the spout and open the spout. When the pulley is rotated in the direction of winding the wire to pull the upper end, the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link is pulled, and the extruded plate rotates to return to the original state, It is possible to prepare for the next operation, and the operation of measuring the opening force of the spout in the gable roof paper container can be easily performed.

[Brief description of the drawings]

FIGS. 1A, 1B, and 1C are explanatory views showing a step of opening a spout of a gable roof paper container.

FIG. 2 is a longitudinal sectional view showing a first example of an embodiment of a spout opening force measurement device in a gable roof paper container according to the present invention.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a longitudinal sectional view showing a state where an extruded plate is rotated to an extruded position by the measuring device shown in FIG.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is an explanatory view showing a step of measuring the opening force of the spout in the gabled roof paper container using the opening force measuring device shown in FIG. 2;

FIG. 7 is an explanatory view showing a step of measuring the opening force of the spout in the gable roof paper container using the opening force measuring device shown in FIG. 2;

FIG. 8 is an explanatory view showing a step of measuring the opening force of the spout in the gabled roof paper container using the opening force measuring device shown in FIG. 2;

FIG. 9 is an explanatory view showing a step of measuring the opening force of the spout in the gable roof paper container using the opening force measuring device shown in FIG. 2;

FIG. 10 is a partially omitted perspective view showing a second example of the embodiment of the spout opening force measuring device in the gable roof paper container according to the present invention.

11 is a partially omitted front view showing a state where the jig of FIG. 10 is disassembled.

FIG. 12 is an enlarged side view of an extruded plate.

FIG. 13 is an enlarged rear view of the extruded plate.

FIG. 14 is an explanatory view showing the internal structure of the measuring device in a state where the push-out plate of FIG. 10 is in an extrusion rotation standby position.

FIG. 15 is an explanatory diagram showing the internal structure of the measuring device in a state where the extrusion plate of FIG. 10 is rotated in the extrusion direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gable roof paper container 2 Body panel 3 Cylindrical body 4 Outer seal panel 5 Gable roof formation panel 6 Inner seal panel 7 Outlet 8 Wife wall formation panel 9 Top 10 Jig 11 Extruded plate 12 Tubular body 13 Top wall 14 axis 15 clamping piece 16 rotation drive mechanism 17 elevating rod 18 drive source 19 link mechanism 20 fan-shaped disc link 21 axis 22 axis 23 rod-shaped link 24 electric cylinder controller 25 opening force detection means 26 load cell 27 detection display 28 jig 28a, 28b Jig parts 29 Top wall 29a Wall 30 Extruded plate 31 Fan-shaped disk link 31a Upper side of fan-shaped disk link 31b Arc-shaped outer peripheral edge of fan-shaped disk link 31c Lower end of arc-shaped outer peripheral edge of fan-shaped disk link 31d Fan-shaped disk link Upper end of arc-shaped outer peripheral edge 32 Mounting shaft 33 34 guide groove 35 rotary drive mechanism 36 wire 37 pulley 38 driving source 39 wire link mechanism 40 opening force detecting means 41 load detection pulley 42 vertices pulley 43 intermediate pulley 44 motor controller 45 cantilever load cell 46 the lever 47 detector indicator

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Lash Ringers Odins Vai 12, N-1344 Haslum, Norway F-term (reference) 2F051 AA00 AB01 AB09 BA07

Claims (5)

[Claims] 1. A body made of paperboard laminated with a thermoplastic resin on both sides, comprising four body panels, formed by a vertical seal panel with edges joined to form a cylindrical body having a rectangular cross section, At the upper end of the body panel, a pair of gable roof forming panels having a band-shaped outer seal panel at the top and facing each other, and having a band-shaped inner seal panel at the top and facing each other, one of them is a spout. A pair of gable wall forming panels to be opened are continuously provided, and the gable wall forming panel is folded between the pair of gable roof forming panels, and each seal panel is heat-sealed at a predetermined position to be sealed. A method for measuring the opening force of a spout in a gable-roof paper container configured such that a spout is formed by unsealing a spout wall forming panel that forms a spout. With the heat-sealed opposing surfaces of the outer seal panel and the inner seal panel on the side of the wife wall forming panel serving as the mouth being peeled off, the wife wall forming panel serving as the spout is pushed out from the inside of the paper container and opened. And measuring the opening force of the spout in the gabled roof paper container, wherein the pushing force is measured as the opening force. 2. A tubular body made of a paperboard material having thermoplastic resin laminated on both sides thereof, comprising four body panels, edges of which are joined by longitudinal seal panels, and a rectangular cross section. At the upper end of the body panel, a pair of gable roof forming panels having a band-shaped outer seal panel at the top and facing each other, and having a band-shaped inner seal panel at the top and facing each other, one of them is a spout. A pair of gable wall forming panels to be opened are continuously provided, and the gable wall forming panel is folded between the pair of gable roof forming panels, and each seal panel is heat-sealed at a predetermined position to be sealed. In the measuring device for the opening force of the spout in the gabled roof paper container configured to open the spout wall forming panel which forms the spout and forms the spout by forming the spout, the tubular body is cut off. A jig that fits into the upper part of the paper container and fixes the upper part of the paper container; a wand wall forming panel serving as a spout of the paper container fixed to the jig on the jig; The lower end is supported near the corner of the body panel connected to the forming panel, in parallel with the corner and rotatably, the lower end is rotated, abuts against the inner surface of the end wall forming panel, pushes it out, and discharges the spout. An extruding plate to be opened, a rotary drive mechanism for rotating the extruded plate and extruding the end wall forming panel, and an opening force detecting means for detecting an opening force from a load when the extruded plate is rotated by the rotary drive mechanism. An opening force measuring device for a spout in a gabled roof paper container, comprising: 3. A rotary drive mechanism for rotating the push-out plate to push out the end wall forming panel, and a drive source having a lift-down rod and a lifting / lowering movement of the lift-up rod by the drive source are transmitted to the push-out plate to transmit the lift-down movement to the push-out plate. A link mechanism for rotating the push plate, wherein the opening force detecting means is arranged in a part of the link mechanism, and the opening force is detected from a load applied to the link mechanism when the push plate is rotated by the rotation drive mechanism. 3. The apparatus for measuring the opening force of a spout in a gabled roof paper container according to claim 2, wherein the opening force is measured. 4. A rotary drive mechanism for rotating said extruding plate to extrude said end wall forming panel, wherein a fan-shaped disc link stands upright with respect to said extruding plate in a longitudinal direction on the back side of said extruding plate, and an upper side thereof is fixed. The one end of the wire is fixed to the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link, and the lower end of the arc-shaped outer peripheral edge of the fan-shaped disc link is pulled by winding the wire by a pulley. It consists of a wire link mechanism for rotating the push plate, and a load detecting pulley constituting a part of the opening force detecting means is placed around a wire in the middle of the wire link mechanism, and the push plate is rotated by the rotation drive mechanism. The opening force is detected from the pulling load of the wire of the wire link mechanism which the load detection pulley receives when rotated. Spout opening force measuring device for gable roof paper containers. 5. The wire link mechanism, wherein a wire having one end fixed to a lower end of an arc-shaped outer peripheral edge of the fan-shaped disc link is hooked on the arc-shaped outer peripheral edge of the fan-shaped disc link, and guided upward. Next, the jig is hung on a vertex pulley provided on the top of the jig and guided downward, then is hung on a load detection pulley constituting a part of the opening force detection means, is guided upward, and then wound around the pulley. 5. A glove roof paper container according to claim 4, wherein the other end is fixed to the upper end of the arc-shaped outer peripheral edge of the fan-shaped disc link via an intermediate pulley. Outlet opening force measuring device.