JP3485313B2 - Fin seal package and turret type packaging machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin-seal packaging body suitable for articles such as confectionery which is required to have a perfect sealing property, and a turret type packaging machine therefor.

[0002]

2. Description of the Related Art As disclosed in, for example, Japanese Unexamined Patent Publication No. 8-91430, a fin seal package of this type is first prepared as follows.
After wrapping the film wrapping material with the unsealing tape around the article, heat seal with the back surfaces of both ends of the film wrapping layer overlapped with each other to close the film wrapping material into a tubular shape and form a fin seal band. Then, with the fin seal band folded in the article side, both ends of the fin seal band and both side edges of the tubular film packaging material are heat-sealed in the form of a similar fin seal.

Therefore, in the above-mentioned fin-seal package, all three sides of the film wrapping material are closed by fin-seals, so that the confectionery such as chocolate, which is required to have excellent moisturizing property and aroma retaining property, is required. It is suitable for packaging. Further, in the fin seal package of the above publication, the fin seal band has a knob continuous with the opening tape,
The tab is formed from two notches that are parallel to the tear tape.

[0004]

DISCLOSURE OF THE INVENTION Since the fin seal band of the above-mentioned known fin seal package is only heat-sealed with both side edges of the tubular film packaging material only at both ends thereof, the fin seal band is not provided. Is raised from the tubular film packaging material, and wrinkles are generated on the fin seal band, which is not preferable in terms of aesthetic appearance of the packaging form.

Therefore, if the fin seal band is heat-sealed and brought into close contact with the tubular film packaging material except for the picking, the above-mentioned problems are solved and the appearance is excellent. However, in this case, in order to open the tubular film wrapping material by tearing the tab with fingers and pulling the tubular film wrapping material together with the unsealing tape, the region between the base of the fin seal band and the tab is a tubular film wrapping material. Since they are bonded by heat sealing, it is necessary to peel off the bonding in this bonding area.

By the way, in order to make it easy to pinch with fingers, if the width of the knob is wide, since the knob is formed by the parallel cuts, the width of the adhesive area becomes wide, and the adhesive area is peeled off. Strong power is needed. Therefore, the opening resistance becomes large, and it becomes difficult for a weak child or an elderly person to open the package. In addition, if the tape is forcibly peeled off, an opening mistake may occur that cannot be normally opened along the opening tape, or the article itself may be damaged.

On the contrary, when the width of the pick is narrowed, it becomes difficult to pick the pick itself. Also, in this case, the peeling force applied to the adhesive area via the knob is reduced,
And because the gap between the notches that form the knob is short,
A crack may run between the cuts, and the pick itself may be torn from the fin seal band. On the other hand, an example of a cutter device for forming the above-mentioned knob is incorporated in the turret type packaging machine disclosed in Japanese Patent No. 3044199, but this known cutter device is provided with a cradle for the cutter for each pocket. Since the folding turret itself becomes heavy, it is difficult to increase the intermittent rotation speed of the folding turret, that is, the packaging speed.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is not only the aesthetic appearance of the packaging form but also the fin seal having a knob that can be opened easily and surely. Another object of the present invention is to provide a wrapping machine, and at the same time, to provide a turret type packaging machine suitable for increasing the packaging speed of the fin-seal packaging body.

[0009]

In order to achieve the above-mentioned object, in the present invention, as described above, the fin seal band is further folded, and the tubular film packaging material is heated except for the tab. In the fin-seal package, the knob according to claim 1 has one notch extending parallel to the opening tape and the notch extending obliquely toward the opening tape and having a notch length as viewed in the width direction of the fin seal band rather than one notch. It is formed by the other long notch.

According to the fin-seal package having the above-mentioned knob, when the knob is sandwiched and pulled by fingers, a crack runs from the tip of each notch along the opening tape, and at the same time, an adhesive area continuing to the root of the knob is pulled. It is peeled off, whereby the tubular film packaging material is torn along the tear tape, and the package is opened. Here, the width of the knob defined between the notches is slanted at the other notch, so even if a sufficient width for grasping the free end of the knob is secured, it is seen in the longitudinal direction of the fin seal band. The root width of the pick does not undesirably widen. Therefore, even if the width of the free end of the knob is wide, the width of the adhesive area connected to the base of the knob is narrow, so that the adhesive area can be easily peeled off and the opening resistance is small. In addition, the cuts that form the knob have a difference in the cut length, so the gap between the tips of the cuts is wider than the base width of the knobs, and the crack running from the tip of the cut connects to the knob itself. Nothing.

Further, the fin seal packaging body described above is obtained by the turret type packaging machine according to the present invention (claim 2), and the turret type packaging machine comprises an intermittently rotatable folding turret and the folding turret. It is provided at intervals in the circumferential direction, and it moves sequentially to the entrance stage, fin seal stage, knob forming stage and exit stage with the intermittent rotation of the folding turret, and at the entrance stage, the article with the film packaging material with the opening tape is loaded. At this time, the film wrapping material is wrapped around the article in a U-shape, and a plurality of pockets are formed so that both ends of the film wrapping material are protruded from the article as a pair of body flaps. The pocket that was placed on the outside of the room and that received the goods and film packaging moved from the entrance stage , A first sealing device that heat seals the front and rear surfaces of both body flaps in a state of overlapping each other and forms a fin seal band that closes the film packaging material into a tubular shape, and on the outside of the folding turret at the knob forming stage. When the pocket is moved from the fin seal stage, cuts are made from the edges of the fin seal band on both sides of the opening tape of the fin seal band, and a part of the fin seal band in the width direction is formed as a knob. And a second sealing device that is provided outside the folding turret and that folds a fin seal band having a knob toward the article and heat-seals the tubular film packaging material without removing the knob.

The cutter device is fixedly arranged in the vicinity of the outer periphery of the folding turret, and has a pedestal for receiving the fin seal band, a movable plate that cooperates with the pedestal to sandwich the fin seal band, and a receiver. A first movable blade that is provided so as to be able to come into contact with and separate from the base and forms the one notch extending in the fin seal band in parallel with the opening tape; and separates from the pedestal in conjunction with the first movable blade, The fin seal band includes a second movable blade that extends obliquely toward the opening tape and that forms the other cut having a cut length that is longer than the one cut when viewed in the width direction of the fin seal band.

According to the above-mentioned turret type packaging machine, after the film packaging material is received together with the article in the pocket of the entrance stage, when the pocket is sequentially positioned the fin seal stage and the knob forming stage, the film packaging material is placed. The fin seal band is formed on the fin seal band, and the knob is formed on the fin seal band. After that, the fin seal band is folded toward the article side by the second seal device,
Then, the tubular film packaging material is heat-sealed except for the tabs.

In the case of the turret type packaging machine described above, the first
In addition to the second sealing device and the cutter device, the cutter device is also provided outside the folding turret, so that the weight of the folding turret does not become heavy, and the intermittent rotation speed of the folding turret, that is, the packaging of the fin seal packaging body is performed. The speed can be increased. It is preferable that the first sealing device includes a pair of heater blocks for sandwiching the front end of the body flap from both sides and performing heat sealing (claim 3). In this case, the sealing time required for forming the fin seal band is shortened, and the packaging speed of the fin seal package can be further increased.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 schematically shows a turret type packaging machine for fin seal packaging. The turret type packaging machine is provided with a folding fold turret 2 shown by a one-dot chain line, and the folding turret 2 has its rotation shaft cantilevered by a machine body frame and is capable of intermittent rotation in one direction. On both sides of the folding turret 2, a supply line 4 for the article A and a packaging line 6 for carrying out the latter packaging process are horizontally extended. Here, the article A is a rectangular box in which confectionery such as chocolate is stored.

A feeding line 8 for the film packaging material S extends vertically between the folding turret 2 and the supply line 4, and the feeding line 8 has a plurality of suction belts (not shown).
It consists of More specifically, the film packaging material S
Is obtained by cutting the film web F fed from the film roll FR along the feeding path toward the feeding line 8 into a predetermined length, and a pinch roller is provided above the feeding line 8. Feed roller 10
Alternatively, a cutter roller 12 for cutting the film web F is arranged, and the feed roller 10 and the cutter roller 12 are rotated by servomotors 14 and 16, respectively. It should be noted that in FIG. 1, the receiving blade forming a pair with the cutter roller 12 is omitted.

On the other hand, a tape suction belt 18 is vertically arranged above the feeding path of the film web F, and a lower portion of the tape suction belt 18 overlaps a part of the feeding path. The tape web T fed from the tape reel TR is guided to the tape suction belt 18, and the feeding of the tape web T is performed by a feed roller 20 having a pinch roller. Note that one side of the tape web T is an adhesive surface coated with an adhesive.

A cutter roller 22 having a receiving roller (not shown) is disposed below the feed roller 20, and the cutter roller 22 cuts the tape web T into opening tapes TT having a predetermined length. This opening tape T
The T is supplied to the tape suction belt 18. The surface of the unsealing tape TT opposite to the adhesive surface is adsorbed by the tape suction belt 18, and is supplied toward the feeding path of the film web F as the tape suction belt 18 travels.

The drive roller for the tape suction belt 18, the feed roller 20 and the cutter roller 22 are also provided.
Is also rotated by the servomotors 24, 26, 28,
The suction belt of the feeding line 8 is also driven by a servo motor (not shown). The unsealing tape TT on the tape suction belt 18 is attached to the back surface of the film web F at the lower portion of the tape suction belt 18 as it is supplied, and due to this attachment, the unsealing tape TT is attached to the lower portion of the tape suction belt 18.
A press roller (not shown) is arranged so as to sandwich it. As is apparent from FIG. 1, the unsealing tape TT is not continuous on the film web F, and is intermittently attached to the film web F so as to fit in the film packaging material S.

Further, a cutter roller 30 having a receiving roller is arranged above the feed roller 10 in the conveying path of the film web F as required, and the cutter roller 30 is also rotated by the servo motor 32. The cutter roller 30 is positioned on the passage line of the unsealing tape TT attached to the back surface of the film web F, and intermittently forms half cuts on the surface of the film web F. This half cut extends in a direction transverse to the opening tape TT, and its position will be apparent from the description below.

The above-mentioned servomotors 14, 16,
24, 26, 28, 30 etc. are electrically connected to a controller (not shown), which controls the rotation of each servomotor to form the opening tape TT and the film packaging S with a half cut, and The film packaging material S is supplied to a predetermined position on the feeding line 8. Figure 2
As shown in Fig. 6, the folding turret 2 has 6
There are two pockets 34, and these pockets 34 are arranged at equal intervals in the circumferential direction of the folding turret 2. In FIG. 2, only four of the pockets 34 are shown.

The folding turret 2 is intermittently rotated counterclockwise as viewed in FIG. 2, and each pocket 34 is moved by this intermittent rotation so that each pocket 34 has an inlet stage, a fin seal stage, a knob forming stage, an outlet stage and two idle stages (not shown). Will be moved to and positioned in sequence. That is, the folding turret 2 is intermittently rotated by 60 °. As is apparent from FIG. 2, the inlet stage and the outlet stage are at the same height level positions as the supply line 4 and the packaging line 6 of the article A.

Now, when one pocket 34 is positioned at the entrance stage, and the above-mentioned film packaging material S is supplied between the pocket 34 of the entrance stage and the supply line 4, the leading end on the supply line 4 is reached. The article A is pushed out toward the pocket 34 of the entrance stage, and the article A is pushed into the pocket 34 together with the film packaging material S. At this time, the film packaging material S is folded in a U-shape around the article A in the pocket 34, so-called cylinder folding of the film packaging material S is performed, and both ends of the film packaging material S have a pair of body flaps BF. _L and BF _S project from the end surface of the article A.

Here, as is apparent from FIG. 2, the front body flap BF is seen in the intermittent rotation direction of the folding turret 2.
_L is longer than the rear body flap BF _S , and the body flap BF
A dimensional difference corresponding to the height H of the article A is ensured between _L and the body flap BF _S. Like this, body flap B
F _L, to provide dimensional difference BF _S, film packaging material S on the feeding line 8 is positioned such that the upper portion than the supply line 4 is longer by the lower portion thereof.

Further, one end of the unsealing tape TT attached to the film packaging material S reaches near the tip of the body flap BF _L , however, the other end of the unsealing tape TT reaches the body flap BF _S. Not not. The end surface of the article A described above is the rear end surface E when viewed in the extrusion direction of the article A.
The end surface E is slightly protruding from the outer periphery (pocket 34) of the folding turret 2.

After that, when the folding turret 2 is intermittently rotated by 60 °, the pocket 34 that has received the article A together with the film packaging material S is moved to the above-mentioned fin seal stage and positioned at this fin seal stage. A first sealing device 36 is disposed on the fin sealing stage outside the folding turret 2, and the first sealing device 3
6 heat-seals the body flaps BF _L and BF _S to each other to form a fin seal band.

More specifically, the first sealing device 36 has a receiving heater block 38 near the outer periphery of the folding turret 2.
And a folded heater block 40. The receiving heater block 38 and the folding heater block 40 are arranged so as to be aligned in the rotation direction of the folding turret 2, and extend in the width (axis) direction of the folding turret 2. Here, the receiving heater block 38 and the folding heater block 40 have a length that traverses the folding turret 2 in the width direction thereof and are sufficiently longer than the width of the film packaging material S.

The receiving heater block 38 has a mounting member 42.
The mounting member 42 is attached to the lower end of the folding turret 2 and extends in the width direction of the folding turret 2 and is arranged along the radial direction thereof. A pair of brackets 44 that are spaced apart in the width direction of the folding turret 2 are provided on the top of the mounting member 42, and one end of a rotating shaft 46 is mounted on these brackets 44. The rotating shaft 46 rotates together with the bracket 44,
As a result, the receiving heater block 38 can rotate about the rotation shaft 46 as shown by the chain double-dashed line in FIG.

The rotating shaft 46 also extends in parallel with the axis of the folding turret 2, and the other end thereof is rotatably supported by the above-mentioned machine frame via a bearing sleeve 48. A part of the bearing sleeve 48 is shown in FIG. on the other hand,
The folding heater block 40 is also attached to the lower end of the attachment member 50. The mounting member 50 has a lower end 50.
_L has a substantially convex shape that is longer in the width direction of the folded turret 2 than the upper end portion 50 _U , and is arranged along the radial direction of the folded turret 2 (see FIG. 4).

A roller 52 is rotatably supported by the upper surface 50 _U of the mounting member 50 on a surface 51 on the side of the machine frame, and the roller 52 is fitted in a cam groove 56 of a groove cam 54. More specifically, as shown in FIG. 2, the groove cam 54, that is, the cam groove 56, has a groove shape extending in the tangential direction of the folding turret 2 and smoothly connecting both ends of the folding turret 2 which are displaced in the radial direction. Then, one end of the cam groove 56 located forward of the folding turret 2 in the rotation direction of the folding turret 2 has a fold in the folding turret 2 more than the other end.
It is located on the outside in the radial direction.

One end of the grooved cam 56 is attached to one end of a rotary shaft 58, which extends in the axial direction of the folding turret 2 and which has a pair of bearing brackets 60 as shown in FIG. It is supported on the upper surface of the support base 62. The support base 62 extends from the machine body frame 64 toward the upper side of the folding turret 2 and is fixed to the machine body frame 64 via a mounting portion 65 perpendicular to the machine body frame 64.

Further, a release lever 66 is attached to the other end of the rotary shaft 58, and the release lever 66 extends in the direction opposite to the groove cam 54. The release lever 66 and the fixing member 68 on the side of the machine body frame 64 are interconnected via an air cylinder 70, and the expansion and contraction of the air cylinder 70 via the release lever 66 causes a groove cam centering on the rotating shaft 58. 54 can be rotated. In the state shown in FIG. 2, the air cylinder 70 is in the extended state and the groove cam 5
6 is rotated and biased clockwise, and is in contact with a stopper (not shown) on the side of the support base 62 (not shown).

Further, as shown in FIG. 4, a tension coil spring 74 is bridged between the release lever 66 and the pin 72 on the side of the fixing member 68, and the tension coil spring 74 is grooved as seen in FIG. The cam 54 is urged to rotate counterclockwise. Therefore, in the state shown in FIG. 2, the air cylinder 70 urges the groove cam 56 to rotate clockwise against the urging force of the tension coil spring 74.

As shown in FIGS. 2 and 3, the mounting member 50 of the folding heater block 40 described above is connected to the driving member 78 via the linear guide 76, and the linear guide 76 extends in the radial direction of the folding turret 2. ing.
Therefore, the linear guide 76 allows the mounting member 50 to move in the radial direction of the folding turret 2 with respect to the driving member 78, whereby the folding heater block 40 can move up and down with respect to the outer periphery of the folding turret 2.

Further, as shown in FIGS. 2 and 4,
The drive member 78 is connected to the support base 62 via a linear guide 80 and is supported by the support base 62. The linear guide 80 extends in the tangential direction of the folding turret 2, that is, in parallel with the groove cam 54, whereby the drive member 78 can move in the groove direction of the cam groove 56 with respect to the support base 62.

Further, the drive member 78 has a roller 82 on the surface of the body frame 64 side, and the roller 82 is fitted in the guide groove 86 of the swing lever 84. The guide groove 86 is formed at the upper end of the swing lever 84, and the lower end of the swing lever 84 is attached to one end of the rotary shaft 88. The rotating shaft 88 extends in the axial direction of the folding turret 2 as shown in FIG. 4, and is rotatably supported by the bearing sleeve 90. The bearing sleeve 90 is formed integrally with the support base 62 described above.

The other end of the rotating shaft 46, which is the center of rotation of the receiving heater block 38, and the other end of the rotating shaft 88 of the swing lever 84, respectively, penetrate the body frame 64, as shown in FIG. To link rods 96 and 98 via link arms 92 and 94, respectively. The link rod 96 extends downward and is connected to the cam mechanism 100. The cam mechanism 100 is composed of a lever having a cam disc and a cam follower, and in FIG. 5, the cam shaft 102 of the cam disc and the lever shaft 1 of the lever are shown in FIG.
04 is indicated by a one-dot chain line. In FIG. 5, the dashed-dotted line circle indicates the rotation axis of the folding turret 2.

Further, the link rod 98 is the swing link 10
6 is connected to the link rod 108, and the link rod 108 is connected to the cam mechanism 110. Like the cam mechanism 100, the cam mechanism 110 is also composed of a cam disk and a lever mounted on the cam shaft 102 and the lever shaft 104. When the cam shaft 102 is rotated in one direction, the cam mechanisms 100 and 110 reciprocally rotate the link arms 92 and 94 and the rotary shafts 46 and 88 through the above-described link mechanism at a predetermined timing. As a result, the receiving heater block 38 turns the rotation shaft 46.
The turret 2 is rotated around the center of the turret 2 and is brought into contact with or separated from the outer periphery of the folding turret 2. Specifically, when the pocket 34 for receiving the film packaging material S and the article A is positioned on the fin seal stage, as shown in FIG. 6, the receiving heater block 38 is closed from the open position indicated by the solid line to the double dotted line. In the closed position, the tip of the moving member is brought into contact with the lower surface of the article A through the film packaging material S, and as a result, the receiving heater block 38 causes the shorter body flap BF of the film packaging material S described above. Applied to _S.

On the other hand, the rotation of the rotation shaft 88 is performed by the swing lever 84.
As a result of being transmitted from the roller 82 to the driving member 78 via the roller 82, the driving member 78 is reciprocated in the tangential direction of the folding turret 2 by the linear guide 80. Since the driving member 78 is connected to the mounting member 50 via the linear guide 76, the mounting member 5 is interlocked with the driving member 78.
0, that is, the folding heater block 40 also reciprocates in the tangential direction of the folding turret 2.

Here, when the mounting member 50 reciprocates,
Since the roller 52 at the upper end is guided by the cam groove 56 of the groove cam 54 described above, the mounting member 50, that is,
The folding heater block 40 reciprocates, and simultaneously with the cam groove 56.
Move up and down according to the groove shape. More specifically, in FIG. 6, when the folding heater block 40 moves from the open position indicated by the solid line to the closed position indicated by the chain double-dashed line, the folding heater block 4 is moved.
0 descends from the open position indicated by the solid line and moves toward the closed position indicated by the chain double-dashed line.

Thus, the folding heater block 40 is formed.
When the above-mentioned pocket 34 is positioned on the fin seal stage when moving from the open position to the closed position, the folding heater block 40 causes the longer body flap BF _L of the film packaging material S to be on the end surface of the article A. And the receiving heater block 38 that has already reached the closed position.
In cooperation with the folded tip portion of the barrel flaps BF _L in a, the tip portion to the trunk flap BF _S overlay with their backside with each other and sandwich the tip and barrel flaps BF _S of these cylinders flaps BF _L . 2 shows the receiving heater block 38 and the folding heater block 40 both in the closed position.

Here, as clearly shown in FIGS. 7 and 8, the folding heater block 40 and the receiving heater block 38 respectively have the heaters 112 therein, and as described above, the body flap BF. _When the tip of _L and the body flap BF _S are sandwiched, they are heated from both sides and heat-sealed.
The fin seal band can be formed in a short time on the tip end of the body flap BF _L and the body flap BF _S. At this time, the fin seal band is in a state of protruding from the end surface of the article A to the outside in the radial direction of the folding turret 2.

Further, as shown in FIG. 7, a handle member 118 is attached to the lower surface of the folding heater block 40 via an attachment plate 114 and a plurality of attachment screws 116. The handling member 118 has an L-shaped cross section and extends over the entire length of the folding heater block 40 in the longitudinal direction. Specifically, the handle member 118 is made of a heat-resistant silicone rubber sheet, and a part of the handle member 118 slightly protrudes from the lower surface of the folding heater block 40.

Further, as shown in FIG. 8, the receiving heater block 38 may have a heat-resistant thin elastic sheet 120 on the heating sandwiching surface forming the fin seal band. As described above, the folding heater block 4
When 0 to squeezing member 118 is provided, the ironing members 118 when folding the heater block 40 is moved from the open position to the closed position, the article torso flaps BF _L of the projecting end of the squeezing member 118 is a film packaging material S after folding on the end face of the a, it is brought into close contact with the end face of the articles a by squeezing the body flap BF _L accompanied by elastic deformation thereof as shown in FIG. 9,
Accordingly, without causing wrinkles in the body flap BF _L, it is possible to perform the folding reliably.

The elastic sheet 120 of the receiving heater block 38 adheres to the receiving heater block 38 and the folding heater block 40 when the tip portion of the body flap BF _L and the body flap BF _S are sandwiched between them. And contributes to more stable formation of the fin seal band FS. The fin seal band FS includes one end of the opening tape TT described above.

When the folding of the body flap BF _L of the film packaging material S and the formation of the fin seal band FS are completed as described above, the heater blocks 38 and 40 move to the open position, while the folding turret 2 rotates intermittently. The article A, which has been tubularly closed by the film packaging material S having the fin seal band FS, is moved to the next knob forming stage together with the pocket 34 thereof, and is positioned on the knob forming stage.

As shown in FIG. 2, a cutter device 121 is provided on the outside of the folding turret 2 on the knob forming stage, and the cutter device 121 is fixedly provided in the vicinity of the outer circumference of the folding turret 2. Is equipped with. The receiving base 122 is located in front of the fin seal band FS positioned on the knob forming stage as viewed in the rotation direction of the folding turret 2, and can receive the moving fin seal band FS. More specifically, the pedestal 122 extends in the width direction of the folding turret 2, and
As shown in FIG. 10, it is supported by the machine body frame 64 via a mounting member 124.

A rotating shaft 126 is arranged above the receiving base 122, and this rotating shaft 126 also extends in the width direction of the folding turret 2 and is rotatably supported by the machine body frame 64 via a bearing sleeve 128. Has been done. Rotation axis 1
A cutter holder 130 is attached to 26, and the cutter holder 130 rotates together with the rotation shaft 126. Also,
The rotary shaft 126 has a cutter holder 130 and a bearing sleeve 1.
The swinging member 132 is rotatably attached between the
A holding member 134 is attached to the lower end of the swing member 132. The sandwiching member 134 extends in the width direction of the folding turret 2 on the lower side of the cutter holder 130, and can rotate around a rotating shaft 126 to be brought into contact with or separated from the pedestal 122. In addition, FIG.
4 is shown in contact with the cradle 122.

A pair of protrusions 136 and 138 are provided on the upper part of the swing member 132, and these protrusions 136 and 138 are provided.
Reference numeral 138 denotes the swing member 13 when viewed in the axial direction of the rotary shaft 126.
It is positioned closer to the bearing sleeve 128 than 2 and is separated from each other in the circumferential direction of the swing member 132. And FIG.
As seen, a stopper 140 is attached to the left protrusion 138, and the stopper 140 protrudes toward the right protrusion 136. The amount of protrusion of the stopper 140 can be adjusted.

Further, as shown in FIG. 10, the rotating shaft 1
A spring receiving member 142 is attached to the 26 between the swinging member 132 and the bearing sleeve 128, and the spring receiving member 142 also rotates integrally with the rotating shaft 126. The spring bearing member 142 extends upward, and its upper end is positioned between the pair of protrusions 136 and 138 described above. A compression coil spring 144 is stretched between the upper end of the spring receiving member 142 and the protrusion 136, and the compression coil spring 144 has the protrusion 136, that is, the swinging member 132.
Seen in FIG. 2, the pressing force is applied in the clockwise direction.

Then, the first and second movable blades 146, 148 are attached to the lower part of the cutter holder 130 described above, and the first and second movable blades 146, 148 are separated from each other in the width direction of the folding turret 2 and the cutter holder 130. 130
Protruding from the lower surface of. When in the state shown in FIGS. 2 and 10, the first and second movable blades 146 and 148 of the cutter holder 130 have the opening 1 formed in the holding member 134.
The holes 50 (not shown) of the pedestal 122 have entered the inside of the container 50.

More specifically, the first and second movable blades 14
6,148 is a fin seal band FS on the knob forming stage.
When the tape moves, the opening tape T in the fin seal band FS
It is located on both sides of one end of T. And FIG.
As is clear from 0, the first movable blade 146 is
However, the second movable blade 148 is inclined with respect to the horizontal cross section in a direction closer to the first movable blade 146, and the second movable blade 148 is inclined from the lower surface of the cutter holder 130. The protruding length is longer than that of the first movable blade 146.

On the other hand, the rotating shaft 126 projects from the machine body frame 64, and its projecting end is connected to the link rod 147 via the link arm 145. Link arm 14
7 is connected to a link rod 152 via a swing link 149 as shown in FIG. 5, and this link rod 152, like the cam mechanisms 100 and 110 described above, has its cam shaft 102 and lever. It is connected to a cam mechanism 154 that shares the shaft 104.

Therefore, as the cam shaft 102 rotates,
The rotary shaft 126 is reciprocally rotated via the cam mechanism 154 and the above-mentioned link mechanism. Now, as shown in FIG. 11, when the fin seal band FS is positioned on the pick-and-mold stage and the pedestal 122 receives the fill seal band FS, the sandwiching member 134 is in the standby position separated from the receiving member 122, At this time, as shown in FIG. 12, the first and second movable blades 146 and 148 of the cutter holder 130 are also in the standby position separated from the receiving table 122. Therefore, the fin seal band FS can reach the cradle 122 without interfering with the holding member 134.

Further, when the holding member 134 is in the standby position, the holding member 134, that is, the swinging member 132 receives the urging force of the compression coil spring 144 and is urged to rotate clockwise in FIG. , Stopper 140 of swing member 132
Is in contact with the upper end of the spring receiving member 142.
At this time, as is clear from FIG. 12, the blade edges of the first and second movable blades 146 and 148 are accommodated in the opening 150 of the holding member 134.

When the rotary shaft 126 is rotated clockwise from the state shown in FIGS. 11 and 12, the spring bearing member 142 is also rotated together with the rotary shaft 126, and this rotation is caused by the compression coil spring 144. The swinging member 132, that is, the sandwiching member 134 is rotated in the clockwise direction via, and the sandwiching member 134 sandwiches the fin seal band FS between itself and the pedestal 122 as shown in FIG. Positioned in the operating position. At this time, since the cutter holder 130 also rotates integrally with the rotation shaft 126, the first and second movable blades 146 and 148 are located at the cutting start position near the fin seal band FS as shown in FIG. Positioned.

Therefore, after this, the holding member 134 is in the operating position where it comes into contact with the receiving base 122 via the fin seal band FS, and the holding member 134 does not rotate further in the clockwise direction. However, the compression coil spring 1 is provided between the spring receiving member 142 and the protrusion 136 of the swinging member 132.
Since it is connected via 44, the spring receiving member 142 is separated from the stopper 140 as shown in FIG. 15, and can be rotated clockwise while contracting the compression coil spring 144, and the rotation shaft 126 Allows further clockwise rotation of the. As a result, further clockwise rotation of the rotary shaft 126 causes the cutter holder 130 to further rotate clockwise as well, and the first and second cutter holders 130 are rotated as shown in FIG.
The movable blades 146 and 148 project from the opening 150 of the holding member 134 into the clearance groove of the pedestal 122, and the fin seal band F
A pair of notches are formed in S. These cuts form the tabs on the fin seal band FS.

Thereafter, when the rotating shaft 126 is rotated counterclockwise, the first and second movable blades 146 and 148 slip out of the escape groove of the receiving base 122 and are housed in the opening 150 of the holding member 134. Then, the upper end of the spring receiving member 142 comes into contact with the stopper 140 again (see FIG. 13).
Then, when the rotating shaft 126 is further rotated counterclockwise, the spring receiving member 142 rotates the swinging member 132, that is, the sandwiching member 134 from the operating position counterclockwise,
Return to its standby position. Further, when the holding member 134 returns from the operating position to the standby position, the first and second movable blades 146 and 146 are moved.
148 also follows the clamping member 134 and returns to its standby position.

FIG. 17 shows the first and second movable blades 146 and 146.
148 shows a state immediately after cutting the fin seal band FS and molding the knob X. As is apparent from FIG. 17, the first movable blade 146 is the unsealing tape TT of the fin seal band FS.
Forming a cut parallel to one end of the second movable blade 14
8 forms a cut diagonally toward one end of the unsealing tape TT, and the length L _{1 of the} cut formed by the first movable blade 146 is the length of the cut formed by the second movable blade 148. It is shorter than L ₂ and a step is secured in these cut lengths. Further, the tip end of the incision by the first movable blade 146 is in a state of slightly overlapping with one end portion of the unsealing tape TT when viewed in the width direction of the fin seal band FS, and the tip end of the incision by the second movable blade 148 is It is in a state of sufficiently overlapping with one end of the unsealing tape TT. Further, when focusing on the root of the knob X formed by a pair of cuts, the width W ₁ of the root as viewed in the longitudinal direction of the fin seal band FS is shorter than the interval W ₂ between the tips of the cuts that define the root. .

Further, in FIG. 17, the above-mentioned half cut H
The formation position of C is also shown, and this half cut H
C, inside the fin seal band FS, more specifically, it is located between the base of the body flap BF _S forming the fin seal band FS and the root of the knob X and crosses the root of the knob X as shown in FIG. It extends in the direction of. FIG. 19 shows a semi-wrapped body of the article A immediately after the knob X is formed on the fin seal band FS on the knob forming stage. In FIG. 19, the pair of cuts for forming the knob X are Y and Z, respectively. It is shown.

When the forming of the knob X is completed, the folding turret 2 is further intermittently rotated, and the pocket 34 accommodating the half package is positioned at the next exit stage. A discharge pusher (not shown) is provided at the exit stage, and the discharge pusher discharges the semi-wrapped body from the pocket 34 of the exit stage toward the above-described packaging line 6 (see FIG. 2).

Further, as shown in FIG. 2, a folding / folding guide 156 is arranged outside the folding turret 2 at the exit stage, and this folding / folding guide 156 is arranged.
L extends above the packaging line 6 in parallel with the packaging line 6, and the end portion of the folding turret 2 side is bent upward.
It has a letter shape. The fin seal band FS, on which the knob X is formed in the knob forming stage, protrudes outward in the radial direction of the folding turret 2 as is clear from the above description, but the semi-wrapping body moves from the knob forming stage to the outlet stage. Then, the fin seal band FS is folded back in the tangential direction of the outer circumference of the folding turret 2 by the folding / folding guide 156, and the pocket 3 is formed at the exit stage.
When the sheet is discharged from 4, the fin seal band FS in the folded state is folded on the surface of the semi-wrapping body (the surface on the side which is continuous with the end surface of the article A and is located above), and is superposed on the film packaging material S.

On the other hand, the packaging line 6 has a second sealing device 158 above the folding / folding guide 156, and the second sealing device 158 has a heater block 160 immediately downstream of the folding / folding guide 156. The heater block 160 extends in the width direction of the folding turret 2 and incorporates a heater 162, and is attached to a rotating shaft 168 via a bracket 164 and a rotating body 166. The rotation shaft 168 extends in the width direction of the folding turret 2 and is rotatably supported by the machine body frame 64 via a bearing sleeve (not shown).

Then, as shown in FIG.
8, a link arm 170 is connected, and the link arm 170 is connected to a cam mechanism 178 via a link rod 172, a swing link 174, and a link rod 176. The swinging link 174 is the rotating shaft 126 described above.
Is provided coaxially with the side swing link 149, and
The cam mechanism 178 is the above-mentioned cam mechanism 100, 110, 15
4, the cam shaft 102 and the lever shaft 104 are shared.

Therefore, when the cam shaft 102 is rotated, the rotary shaft 168 is reciprocally rotated via the cam mechanism 178 and the above-mentioned link mechanism, whereby the heater block 160 moves up and down about the rotary shaft 168. Can be rotated in any direction. Further, an air cylinder 180 is connected to the link arm 170, and the air cylinder 180 can rotate the heater block 160 in the vertical direction independently of the cam mechanism 178.

As mentioned above, the exit stage pocket 3
When the semi-wrapping body is discharged from 4 onto the packaging line 6, the fin seal band FS folded toward the semi-wrapping body comes out from the folding / folding guide 156, and the heater block 1
It is located below 60. Then, the heater block 160 descends and presses the fin seal band FS toward the semi-wrapping body, and at the same time, heat seals the fin seal band FS to the film packaging material S of the semi-wrapping body.

Here, the heat sealing of the fin seal band FS by the heater block 160 is performed only on the above-mentioned knob X, more specifically, on the area shaded as shown in FIG. 20 while avoiding the area surrounding the knob X. Will be implemented. Therefore, the knob X formed on the fin seal band FS is not heat-sealed to the semi-wrapping body, however, the root of the knob X and the base between the fin seal band FS are heat-sealed. It should be noted that

After the fin seal of the fin seal band FS is carried out as described above, the semi-wrapping body is transferred to the downstream side of the packaging line 6 (see FIG. 2), and in the transfer process, the semi-wrapping is carried out. Both sides of the body are folded in a predetermined folding form, and heat sealing, that is, side sealing is performed, and the fin seal package shown in FIG. 20 is obtained.

In order to open the fin seal package of FIG. 20, first, the knob X of the fin seal band FS is picked up and lifted, and then the knob X is pulled in the direction along the opening tape TT. A crack runs along the opening tape TT from the ends of the pair of notches that form the film, and the film packaging material S is torn along with the opening tape TT. Here, since the width of the knob X at the end edge of the fin seal band FS is wider than that at the base side thereof, the knob X can be easily picked.

The base of the pick X and the fin seal band FS
Although it has been heat-sealed with the base of the knob, the width of the base of the knob X (W ₁ , see FIG. 17) is narrower than the width of the tip when viewed in the longitudinal direction of the fin seal band FS. The width of the heat-sealed area between X and the base of the fin seal band FS, that is, the bonded area, is also narrowed. As a result, when pulling the knob X, a strong force is not required to peel off the adhesive area, and the fin seal package can be easily opened.

Further, when the above-mentioned half cut HC (see FIG. 18) is formed on the fin seal band FS, the body flap BF _S of the fin seal band FS can be easily broken, and the fin seal package body It becomes easier to open. On the other hand, the distance (W ₂ ) between the tips of the pair of cuts Y and Z forming the knob X is wider than the width of the root (W ₁ ), and the tips of these cuts Y and Z are at one end of the unsealing tape TT. Since it is in a state of overlapping with the portion, a crack running from the tips of the cuts Y and Z is not directly connected and the knob X itself is not broken, and the fin seal package can be reliably and stably opened. be able to.

On the other hand, paying attention to the turret type packaging machine for producing the above-mentioned fin seal packaging body, the above-mentioned first sealing device 36, cutter device 121 and second sealing device 1 are provided.
The weight of the folding turret 2 does not increase because each of the 58 is arranged entirely outside the folding turret 2. This means that the folding turret 2 can be intermittently rotated at high speed, and the fin seal packing body can be packed at a high speed.

Further, in the first sealing device 36, the receiving heater block 38 and the folding heater block 40.
Since the heater 112 is built in each of them, the tip end portion of the body flap BF _L and the body flap BF _S that are overlapped with each other can be simultaneously heated from both sides, and the fin seal band FS can be formed in a short time. it can. Therefore, the fin seal band FS can be formed quickly,
Thereby, the intermittent rotation speed of the folding turret 2, that is, the packaging speed thereof can be further increased.

Furthermore, when the folding turret 2 is made light, when it is applied to the packaging of articles of different sizes,
The folding turret 2 can be easily replaced.
The present invention is not limited to the one embodiment described above, and various modifications are possible. For example, the folded form on both sides of the fin seal package is not limited to the form shown in FIG.

Further, by forming a row of braille holes on the knob X, even a visually handicapped user can easily grasp the position of the knob X. In this case, the braille hole array is provided by providing the pinching member 134 with a needle for punching.
It can be formed simultaneously with the knob X.

[0076]

As described above, according to the fin seal package of the present invention (Claim 1), the fin seal band is pinched by one notch parallel to the opening tape and the other notch diagonally. Since it is formed, the width of the base of the knob can be narrowed even if the tip width of the knob is widened, and the fin seal package can be easily opened. Moreover, since a step is secured between the tips of the cuts, the gap between the tips of the cuts becomes wider than the base width of the knob, and the opening can be performed reliably and stably.

Turret type packaging machine of the present invention (claim 2)
According to this, since the folding turret can be reduced in weight, the intermittent rotation speed of the folding turret can be increased, and the packaging speed of the fin-seal package can be increased.
Further, in the first sealing device of the turret type packaging machine, since the fin seal band is formed by the pair of heater blocks, the time required for forming the fin seal band is shortened, which greatly contributes to the speeding up of the packaging speed.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing an entire turret type packaging machine.

FIG. 2 is a view showing the periphery of the folding turret shown in FIG.

3 is a plan view of the first sealing device of FIG. 2. FIG.

4 is a side view of the first sealing device of FIG. 2. FIG.

FIG. 5 is a schematic configuration diagram showing a drive system of the packaging machine.

FIG. 6 is a diagram showing movements of a receiving heater block and a folding heater block in the first sealing device.

FIG. 7 is an enlarged view of a folded heater block.

FIG. 8 is an enlarged view of a receiving heater block.

FIG. 9 is a view showing a state in which a fin seal band is sandwiched between a receiving heater block and a folding heater block.

FIG. 10 is a side view showing the cutter device of FIG. 2 with a part thereof cut away.

FIG. 11 is a view showing a standby position of a holding member in the cutter device.

FIG. 12 is a view showing a standby position of a movable blade in the cutter device.

FIG. 13 is a diagram showing an operating position of a holding member.

FIG. 14 is a view showing a cutting start position of a movable blade.

FIG. 15 is a view showing a state in which the spring receiving member is further rotated from the state where the holding member is in the operating position.

FIG. 16 is a diagram showing a cutting end position of a movable blade.

FIG. 17 is a view showing a state in which a movable blade is cut into a fin seal band.

FIG. 18 is a cross-sectional view of a fin seal band.

FIG. 19 is a perspective view of the half package immediately after the tab is formed.

FIG. 20 is a perspective view of a completed fin seal package.

FIG. 21 is a perspective view showing how the knob is pulled.

[Explanation of symbols]

2-fold turret 34 pockets 36 1st sealing device 38 Receiver heater block 40 Folding heater block 121 cutter device 122 cradle 130 cutter holder 134 clamping member 146 movable blade 148 movable blade A article S film packaging material TT opening tape FS fin seal X picking Y cut Z cut HC half cut

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-49120 (JP, A) JP-A-10-53218 (JP, A) Actual Kaihei 3-100156 (JP, U) Special Table Sho-56- 500770 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65B 11/00-11/58 B65D 65/00-75/68

Claims (3)

(57) [Claims] 1. A fin seal band, which is obtained by wrapping a film wrapping material with an unsealing tape around an article in a tubular shape, and then heat-sealing the tubular film wrapping material in a state where both end back surfaces of the tubular film wrapping material are overlapped with each other. The fin seal band has a knob formed on a part of the fin seal band in the width direction by making cuts on both sides of the opening tape from the edges of the fin seal band. In a fin seal package formed by folding a seal band toward the article, and heat-sealing the tubular film packaging material excluding the knob, the one cut extends parallel to the opening tape, and the other Of the fins, the notch extending obliquely toward the opening tape and having a longer cut length in the width direction of the fin seal band than the one cut. Le package. 2. An intermittently rotatable folding turret, and an interval provided in the circumferential direction of the folding turret, and an inlet stage, a fin seal stage, a knob forming stage, and an outlet according to the intermittent rotation of the folding turret. It moves sequentially to the stage and receives the article together with the film packaging material with the unsealing tape at the entrance stage, at this time, the film packaging material is wound in a U shape around the article, and both ends of the film packaging material are received. A plurality of pockets protruding from the article as a pair of body flaps, and a pocket provided on the fin seal stage outside the folding turret and receiving the article and the film packaging material moves from the entrance stage. Heat seal with the back surfaces of the tips of both body flaps overlapping each other. A first sealing device that forms a fin seal band that closes the film packaging material into a tubular shape; and a knob provided on the outside of the folding turret in the knob forming stage, when the pocket moves from the fin seal stage, A cutter device that inserts cuts from both edges of the opening tape of the fin seal band from the edges of the fin seal band, and forms a part of the fin seal band in the width direction as a knob, and on the outside of the folding turret. A fin seal band having the knob is folded toward the article, the second seal device is heat-sealed to the tubular film packaging material excluding the knob, and the cutter device is the folding turret. Fixed around the outer circumference of
A cradle that receives the fin seal band, a movable plate that cooperates with the cradle to sandwich the fin seal band, and a movable plate that can be brought into and out of contact with the cradle and that is opened in the fin seal band. A first movable blade that forms the one notch extending parallel to the tape, and is brought into contact with and separated from the cradle in conjunction with the first movable blade,
A second movable blade that extends obliquely toward the opening tape in the fin seal band, and that forms the other cut having a cut length that is longer than the one cut when viewed in the width direction of the fin seal band. A turret type wrapping machine for fin seal packaging. 3. The fin seal package according to claim 2, wherein the first sealing device includes a pair of heater blocks that sandwich the tip end portion of the body flap from both sides to perform heat sealing. Turret type packaging machine.