JPH057608U - Tubular material web processing equipment in packaging machine - Google Patents

Abstract

(57) [Summary] [Purpose] The sealing method for sealing a tubular material web filled with milk or other liquid foods with a pair of sealing jaws can be switched to either high-frequency sealing or impulse sealing. To do so. [Structure] A pair of sealing members I ₁ and I ₂ for high-frequency sealing or a pair of sealing members T ₁ and T ₂ for impulse sealing, which are mounted on the pair of sealing jaws 1 and ₂ , are detachable from the sealing jaws. To do. A conductor for high frequency sealing is used as a conductor for energizing the heater wire 3 which is a part of the seal member. An output changeover switch 7 for selectively operating the high frequency oscillator 5 for heating the heater wire 3 for high frequency sealing and the impulse seal power controller 6 for heating the heater wire 3 for impulse sealing is arranged. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a device used for producing individual packaging containers from long tubular material webs made of laminated packaging material filled with an internal solution. The present invention relates to one that can be switched to either the seal or impulse seal method.

[0002]

[Prior Art]

 Conventionally, in producing a packaging container filled with liquid food such as milk or juice, a long tubular packaging material web W is formed from a laminated packaging material with pre-folds by a packaging machine. The inner solution is filled inside, sealed at regular intervals and divided, and then molded into a specified shape to form individual packaging containers.

The tubular material web processing apparatus used at this time is, for example, as described in JP-A-58-19320 and JP-A-63-281918, this material web is provided on both sides of the tubular material web. Is provided with a pair of cooperating sealing jaws which are provided with reciprocating motions in the longitudinal and width directions respectively. With this pair of sealing jaws, the tubular material web filled with the content liquid is squeezed from both sides to make the cross-sectional shape from a substantially circular shape to a rectangular shape and to seal the material at regular intervals, and to separate the individual packaging containers. Divide as much as possible.

In this case, the sealing method differs depending on the type of laminate packaging material that is a tubular material web. For example, when processing a material web in which an aluminum layer does not exist in a laminate of laminated packaging materials, the impulse sealing method is generally adopted. On the other hand, when the aluminum layer is present in the laminate of the laminated packaging material, the high frequency sealing method is adopted in consideration of thermal efficiency and other aspects.

As described above, there are two types of sealing methods depending on the structure of the laminated body of the tubular packaging material web, and individual packaging containers are produced from tubular packaging materials having different laminated body configurations. Conventionally, there were two types of processing equipment that differed only in the sealing method. In these two types of tubular material web processing apparatuses, the structural difference is the sealing member in the sealing jaws for sealing the packaging material web (the structure of the laminated body) used, and a part thereof. Only a conductor for energizing a certain heater wire and a device for heating the heater wire can be used, and the rest can have the same structure.

The above differences will be described in more detail. When processing a material web in which an aluminum layer is present in the laminate, a high frequency sealing method is used. As a sealing member in that case, one sealing jaw 1 as shown by I ₁ in FIG. 2 (B) is used. The heater wire 3 is arranged so as to be embedded on the side, and the seal jaw 1 on which the heater wire 3 is arranged is paired with the other seal jaw 2 and I ₂ of FIG. As shown in, the one with pressure rubber 21 is used. Then, as a conductor for energizing the heater wire 3, for example, a conductor capable of concentrating a high frequency on its surface as shown by 4 in FIG. 4 is used. A high frequency oscillator 5 is used as a device for heating.

On the other hand, when processing a material web in which no aluminum layer is present in the laminate, the impulse sealing method is used, and the sealing member in that case is T ₁ in FIG. 2 (B). As shown, a heater wire 3 is attached to one of the seal jaws 1 through an insulator 11, and the seal jaw 1 on which the heater wire 3 is arranged is paired with the heater wire 3 and the other side of the seal jaw 2 is shown in FIG. As shown by T ₂ in (A), a boom 22 made of stainless steel or the like is attached. As a conductor for energizing the heater wire 3, a cable (a bundle of core wires covered with an outer jacket, preferably having flexibility) is used. An impulse seal power controller 6 is used as a device for heating the heater wire 3 described above.

[0008] Thus, although only a part is different and the other parts can have the same structure, in reality, two types of tubular materials are used depending on the packaging material web (composition of the laminated body) to be used. The material web processing equipment was used properly.

[0009]

[Problems to be solved by the device]

 However, since the tubular material web processing device itself is very expensive and large, it is economically necessary to prepare two types of tubular material web processing devices. However, it is not preferable in terms of installation space. In order to eliminate this drawback, it is advisable to implement both the high-frequency seal and impulse seal sealing methods with a single tubular material web processing device, but in the case of the conventional method, no such measures have been taken. No, it was virtually impossible. The present invention is designed so that a high-frequency seal and an impalse seal can be selected and implemented even with one tubular material web processing apparatus.

[0010]

[Means for Solving the Problems]

In order to make this possible, in the present invention, a pair of sealing members I ₁ and I ₂ for high-frequency sealing or a pair of sealing members T ₁ and T ₂ for impulse sealing that are mounted on the pair of sealing jaws 1 and _{2 are used.} Is made detachable from the seal jaws, and the conductor for energizing the heater wire 3, which is a part of the seal member, is used as a conductor 4 for high frequency sealing during high frequency sealing and impulse sealing. , And is electrically connected to this conductor 4 and is used for heating the heater wire 3 for high frequency sealing, and the high frequency oscillator 5 for heating the heater wire 3 for impulse sealing, and the impulse sealing power for heating the heater wire 3 for impulse sealing. An output switching switch 7 for selectively operating the controller 6 is arranged.

[0011]

[Action]

The operation of the present invention will be described with reference to FIGS. FIGS. 2A and 2B show a state in which a pair of seal members I ₁ and I ₂ for high frequency sealing are attached to the pair of seal jaws 1 and ₂ . When processing a material web having an aluminum layer in the laminate, a pair of sealing members I ₁ and I ₂ for high-frequency sealing are attached to the pair of sealing jaws 1 and ₂ . The pair of seal members I ₁ and I ₂ are attachable to and detachable from the pair of seal jaws 1 and 2.

On the other hand, when processing a material web having no aluminum layer in the laminate, the seal members I ₁ and I ₂ for high-frequency sealing are removed from the seal jaws 1 and 2 and replaced with them. 2A and 2B, attach the sealing member for impulse seal shown by T ₁ and T ₂ .

As described above, according to the packaging material web (laminate structure) to be used, the high-frequency sealing member and the impulse sealing member are selected as the sealing members to be mounted on the pair of sealing jaws 1 and 2. Replace it.

When a pair of sealing members I ₁ and I ₂ for high frequency sealing are attached to the pair of sealing jaws 1 and ₂ , an output selector switch 7 shown in FIG. Switching is performed, and the heater wire 3 for high frequency sealing is heated by the high frequency oscillator 5. Under this condition, when a reciprocating motion is applied to the pair of sealing jaws 1 and 2 in the longitudinal direction and the width direction of the material web, the tubular material web filled with the content liquid can be processed by the high frequency sealing method. I can.

On the other hand, when a pair of sealing members T ₁ and T ₂ for impulse sealing are attached to the pair of sealing jaws 1 and 2, the output changeover switch shown by 7 in FIG. 6, and the heater wire 3 for impulse sealing is heated by the impulse seal power controller 6. As the conductor in this case, the conductor 4 for high frequency sealing can be used as it is, and the heater wire 3 at the time of impulse sealing can be energized via this conductor 4. Under this condition, when a reciprocating motion is applied to the pair of sealing jaws 1 and 2 in the longitudinal direction and the width direction of the material web, the tubular material web filled with the inner solution is processed by the impulse sealing method. You can do it.

[0016]

【Example】

 Embodiments of the present invention will be described with reference to the accompanying drawings.

The tubular material web processing apparatus shown in FIG. 3 is used for producing, for example, a brick-shaped (brick-shaped) pack container filled with liquid food such as milk or juice. Using a packing machine, form a long tube-shaped laminated packaging material into a long tube-shaped (tubular material web) W, fill it with the content liquid, and then seal the tubular material web W at regular intervals. It is for doing and dividing.

In this tubular material web processing apparatus, a long tubular material web W filled with the content liquid is sandwiched in the up-and-down traveling path on both sides thereof in the longitudinal direction and the width direction of the material web W, respectively. A pair of cooperating sealing jaws 1, 2 which are given a reciprocating motion are suspended from a yoke 31 so as to be pivotable. This yoke 31 is connected to a first drive rod 32 of two parallel drive rods 32 and 33 which are movable in the longitudinal direction of the tubular material web W, and this drive rod 32 is connected via a connecting rod 32a. It is connected to the tip of a first arm 34 pivotally supported by a machine body (not shown). A cam roller 35 is pivotally attached to the arm 34, and the cam roller 35 is engaged with the upper surface of a first radial cam 37 provided close to both sides of the drive gear device 36. When the radial cam 37 is rotated counterclockwise in FIG. 3 by the drive gear device 36, the first drive rod 32 moves up and down.

It should be noted that although these mechanisms are the same, but different ones are provided symmetrically on the front side and the opposite side, the description of these mechanisms will be made only for the tubular material web processing apparatus on the front side. Do about.

In each of the pair of sealing jaws 1 and 2, a lower jaw arm 38 is connected to a bracket 40 of a second drive rod 33 via a ring 39, and the second drive rod 33 has a connecting rod 33a. It is connected to the tip of a second arm 41 which is rotatably supported by a machine body (not shown) below the first arm 34. A cam roller 42 is pivotally attached to the arm 41, and the cam roller 42 is engaged with the lower surface of a second radial cam 43 which is coaxial with the first radial cam 37 and is provided outside the first radial cam 37. When the radial cam 43 is rotated counterclockwise in FIG. 3 by the drive gear device 36, the second drive rod 33 described above moves up and down.

The rotation of the first radial cam 37 and the second radial cam 43 causes the first drive rod 32 and the second drive rod 33 to move up and down. Due to the difference in the amount of movement in the longitudinal direction that occurs, a lateral movement is imparted to the pair of sealing jaws 1 and 2 facing each other.

A pair of sealing members are attached to the respective tips of the pair of sealing jaws 1 and 2 at positions 1a and 2a shown in FIG. 1 (A), and also shown at 44 in FIG. Thus, a forming flap having a U-shaped cross section is pivotably attached. When the pair of opposing sealing jaws 1 and 2 moves laterally from the state of FIG. 1 (A), the tubular material web W filled with the content liquid is squeezed from both sides by the pair of forming flaps 44 and 44. The cross-sectional shape is changed from a substantially circular shape to a predetermined rectangular shape, and at the same time, the pair of sealing jaws 1 and 2 enter a descending motion, at which time the pair of sealing jaws 1 and 2 are closed. The material web W is sealed at regular intervals and divided by a pair of seal members attached to them. Then, the pair of sealing jaws 1 and 2 start to open sequentially when approaching the end of the descending motion, and release the pack-like material web W which is divided during the upward returning motion. Fig. 1 (B) shows a state in which the pair of sealing jaws 1 and 2 are in a closed state and immediately before they descend and start to open, and Fig. 1 (A) shows that the pair of sealing jaws 1 and 2 returns upward and is tubular. The state before the pressing of the material web W is started, but the material web W is omitted in both figures for convenience.

In FIG. 3, the pair of sealing jaws in the tubular material web processing device located on the front and rear sides of the drive gear device 36 alternately squeeze the tubular material web W by shifting the operation timing so as not to collide with each other. It is supposed to do.

As described above, the tubular material web W can be processed by the pair of cooperating sealing jaws 1 and 2, depending on the type (laminate structure) of the laminated packaging material which is the tubular material web W. It is necessary to use different sealing methods, and in the present invention, the high frequency sealing and the impulse sealing can be selectively performed by one tubular material web processing apparatus.

FIGS. 2A and 2B show a state in which a pair of seal members I ₁ and I ₂ for high frequency sealing are attached to the pair of seal jaws 1 and ₂ . When processing a material web W in which an aluminum layer is present in the laminate, as shown in FIGS. 2 (A) and 2 (B), a pair of seal members 1 and 2 are used as a pair of high-frequency sealing members I. Wear ₁ and I ₂ . These pair of seal members I ₁ and I ₂ can be attached to and detached from the pair of seal jaws ₁ and ₂ by screws or other known attachment means 12 and 13. When the attachment means 12 and 23 are removed, the seal member I ₁ and I ₂ are removed. , I ₂ can be removed from the seal jaws 1, 2 together with the main bodies 13, 24.

The seal members I ₁ and I ₂ for high-frequency sealing can have the same mechanism as in the conventional case, except that they are detachable from the seal jaws 1 and 2. For example, as shown by I ₁ in FIG. 2 (B), two heater wires 3 are embedded in the main body 13 on one seal jaw 1 side in the lateral direction, and the heater wire 3 is arranged on the seal jaw 1. As shown by I ₂ in FIG. 2 (A), the main body 24 on the side of the other seal jaw 2 which is paired with the pressure jaws 1 and ₂ is arranged so as to face the two heater wires 3 and 3 up and down. It can be a mechanism equipped with 21. A cutter knife 25 is horizontally arranged between the pressure rubbers 21 and 21 on the seal jaw 2 side so that the tip of the cutter knife 25 protrudes from the front surfaces of the pressure rubbers 21 and 21, while the upper and lower sides of the main body 13 on the seal jaw 1 side are protruded. A groove 14 into which the tip of the cutter knife 25 can be fitted is provided between the two heater wires 3 and 3.

On the side of the seal jaw 1 where the upper and lower heater wires 3 and 3 are arranged, a high-frequency seal for heating both heater wires 3 and 3 as shown by 4 in FIG. 2 (B). Place a conductor for.

On the other hand, when processing the material web W in which the aluminum layer does not exist in the laminated body, the attaching means 12 and 23 are removed and the pair of sealing jaws 1 and 2 is used to remove the pair of high-frequency seals. The sealing members I ₁ and I ₂ are removed, and in place of them, the sealing members for impulse sealing shown by T ₁ and T ₂ in FIGS. 2A and 2B are attached.

The pair of sealing members T ₁ and T ₂ for impulse sealing are also attached to the pair of sealing jaws 1 and 2 by the mounting means 12 and 23 in the same manner as the sealing members I ₁ and I ₂ for high frequency sealing. The seal members T ₁ and T ₂ can be removed from the seal jaws 1 and 2 together with the main bodies 13 ′ and 24 ′ by removing the mounting means 12 and 23. Further, the pair of seal members T ₁ and T ₂ can be made to have the same mechanism as in the conventional case, except that it is detachable from the seal jaws 1 and 2. For example, as shown by T ₁ in FIG. 2 (B), two heater wires 3 are attached to the main body 13 ′ on one seal jaw 1 side in the horizontal direction via the insulator 11, and the heater wire 3 is also attached. The main body 24 'on the side of the other seal jaw 2 which is paired with the seal jaw 1 in which is installed is a mechanism in which a boom 22 made of stainless steel or the like is attached as shown by T ₂ in FIG. 2 (A). You can do it. Then, the tip of the horizontally long cutter knife 25 'is projected from the notch hole 22a of the boom 22, while the main body 13' on the seal jaw 1 side has the upper and lower heater wires 3 and 3 between the cutter knife 25 '. There is a groove 14 'that can fit into the tip.

2A and 2B, when a pair of sealing members for impulse sealing shown by T ₁ and T ₂ are attached to the pair of sealing jaws 1 and 2, the upper and lower parts mounted on the main body 13 ' As the conductor for heating the two heater wires 3 and 3, the conductor 4 for high frequency sealing is used as it is. As the conductor for high frequency sealing, for example, as shown by 4 in FIG. 4, a conductor capable of concentrating high frequency on its surface can be used, but this conductor is also used as it is for impulse sealing. I shall.

The conductor 4 used for high-frequency sealing can also be used for impulse sealing by applying a normal high-frequency current to the conductor 4 capable of concentrating high frequencies on the surface. This is because there is no problem. On the contrary, the conductor commonly used for impulse sealing cannot be used for high frequency sealing. This is because the high frequency tends to concentrate on the surface of the conductor (skin action), so even if a high frequency wave is added to the conductor used for impulse sealing and high frequency sealing is performed, its cross-sectional area is This is because there is a shortage and normal high frequency sealing cannot be performed.

In addition, to describe the specific structure of the conductor indicated by 4 in FIG. 4 in more detail, one flat strip made of a fluororesin is provided between the two flat strips 4a and 4a made of a copper plate. 4b are interposed, and they are surrounded by a synthetic resin tube 4c to form a conductor. Even if a copper pipe is used instead of the flat strips 4a and 4b, high frequency waves can be concentrated on the surface of the conductor.

When performing high frequency sealing, a high frequency oscillator 5 is used as a device for heating the heater wire 3 in the sealing member I ₁ for high frequency sealing. On the other hand, the impulse seal power controller 6 is used as a device for heating the heater wire 3 in the seal member T ₁ for impulse sealing in performing impulse sealing. Therefore, in the present invention, as shown in FIG. 5, a high-frequency oscillator 5 and an impulse power controller are electrically connected to a high-frequency sealing conductor 4 used in both high-frequency sealing and impulse sealing. And an output changeover switch 7 for selectively operating the switch 6 and the switch 6.

When a pair of sealing members I ₁ and I ₂ for high-frequency sealing are attached to the pair of sealing jaws 1 and ₂ , this output selector switch is switched to the high-frequency oscillator 5 side, The heater wire 3 in the seal member I ₁ for high frequency sealing is heated. When the pair of sealing jaws 1 and 2 are operated in this state as described above, the upper and lower two heater wires 3 and 3 on the sealing jaw 1 side and the upper and lower two pressure rubbers 21 on the sealing jaw 2 side. , 21 and the material web W ₁ filled with the inner solution is sealed at two upper and lower positions in the width direction, and a space between them is cut by a cutter knife 25 to be divided.

On the other hand, when a pair of sealing members T ₁ and T ₂ for impulse sealing are attached to the pair of sealing jaws 1 and 2, the output selector switch 7 is switched to the impulse seal power controller 6 side. The heater wire 3 in the seal member T ₁ for impulse sealing is heated by the impulse seal power controller 6. When the pair of sealing jaws 1 and 2 is operated as described above under this condition, the upper and lower heater wires 3 and 3 on the sealing jaw 1 side and the boom 22 on the sealing jaw 2 side are operated. The material web W filled with the liquid is sealed at two upper and lower positions in the width direction, and the space between them is cut by a cutter knife 25 'and divided.

There are a high-frequency sealing method and an impulse sealing method as the sealing method depending on the type of the packaging material web that is the laminated packaging material (configuration of the laminated body). A pair of sealing members I ₁ , I ₂ and a pair of sealing members T ₁ and T ₂ for impulse sealing are prepared in advance, and either one of the sealing members is selected depending on the type of laminar packaging material used (configuration of laminated body). After mounting on the pair of seal jaws 1 and 2, the output selector switch 7 can be switched to either the high frequency oscillator 5 used for high frequency sealing or the impulse seal power controller 6 used for impulse sealing. Either high-frequency seal or impulse seal can be selected and implemented.

[0037]

EFFECTS OF THE INVENTION In the present invention, one tubular material web processing device in which a pair of seal members are replaced is prepared, and a pair of seal members is replaced according to the sealing method of the packaging material web. It is very convenient because it is enough. Moreover, since it is only necessary to install one tubular material web processing device in a factory or the like, it is advantageous from an economical point of view as well as an installation space.

[Brief description of drawings]

FIG. 1 is a side view of the vicinity of a pair of sealing jaws, which is a part of a tubular material web processing device in a packaging machine as an example, (A) shows a pair of sealing jaws returning upward and squeezing a tubular material web. The state before starting, (B) is (A)
The state immediately before the pair of seal jaws descends in a closed state and starts to open from the state (3), but the material web is omitted in both cases.

FIG. 2 is a perspective view showing a pair of seal members to be mounted on a pair of seal jaws together with the seal jaws. A seal member for high-frequency sealing is mounted on the pair of seal jaws. On the front side, there are a pair of seal members for impulse sealing that can be mounted instead of these.

FIG. 3 is an overall perspective view showing an embodiment of a tubular material web processing apparatus in a packaging machine.

FIG. 4 is a perspective view showing an example of a conductor for energizing a heater wire, which is a part of a seal member, with a part cut away.

FIG. 5 is a schematic diagram showing a connection state of a high frequency oscillator used for high frequency sealing, an impulse seal power controller used for impulse sealing, an output changeover switch and a sealing jaw in a tubular material web processing apparatus.

[Explanation of symbols]

1, 2 Seal jaws 3 Heater wire 4 Conductor 5 High frequency oscillator 6 Impulse seal power controller 7 Output changeover switch I ₁ , I ₂ Sealing member for high frequency sealing T ₁ , T ₂ Sealing member for impulse sealing

Claims (1)

Claims for utility model registration: A pair of cooperating sealing jaws 1, which are arranged on both sides of a tubular material web W and are provided with reciprocating motions in the longitudinal direction and the width direction of the material web. In a tubular material web processing apparatus in a packaging machine, which is equipped with a pair of sealing jaws 1 and 2, and seals a tubular material web W filled with a content liquid, a high frequency wave mounted on the pair of sealing jaws 1 and 2. The pair of sealing members I ₁ and I ₂ for sealing or the pair of sealing members T ₁ and T ₂ for impulse sealing are detachably attached to the sealing jaws, and the heater wire 3 which is a part of the sealing member.
The conductor for energizing the same is shared by the conductor 4 for high-frequency sealing during both high-frequency sealing and impulse sealing.
A high frequency oscillator 5 for electrically heating the heater wire 3 for high frequency sealing and electrically connected to the conductor 4 and an impulse seal power controller 6 for heating the heater wire 3 for impulse sealing are selected. A tubular material web processing apparatus in a packaging machine, in which an output changeover switch 7 for operatively operating is disposed.