JP2002284109A - Fin seal package and its turret type packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fin seal package which can be easily opened, and a turret type packaging machine by which high-speed packaging of the fin seal package can be attained. SOLUTION: The fin seal package includes a fin seal strip FS sealed by heat on its outer face, and a pinched portion X formed on the fin seal strip FS. The pinched portion X is formed between a short cutaway Y extended parallel to an opening tape TT and the cutaway Y and is obliquely extended toward the opening tape TT.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin-sealed package suitable for articles such as confectionery and the like, which are required to be completely sealed, and a turret type packaging machine therefor.

[0002]

2. Description of the Related Art As disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 8-91430, this type of fin seal package firstly
After wrapping the film packaging material with the opening tape around the article, the film packaging material is closed in a tubular shape by forming a fin-seal band by heat-sealing the back surfaces of both ends of the film packaging body in a state of being overlapped with each other. Then, both ends of the tubular film packaging material are heat-sealed in the same fin-seal form together with both ends of the fin-seal band in a state where the fin-seal band is folded toward the article.

[0003] Therefore, the above-mentioned fin-sealed package is excellent in hermeticity, and is required to have a good moisturizing property and aroma-preserving property, because all three sides of the film packaging material are closed by the fin seal. It is suitable for packaging. In the fin seal package of the above publication, the fin seal band has a tab connected to the opening tape,
The knob is formed from two cuts parallel to the opening tape.

[0004]

The fin seal band of the above-mentioned known fin seal package is heat-sealed only at both ends thereof together with both side edges of the tubular film packaging material. Are lifted from the tubular film packaging material, and wrinkles are generated in the fin seal band, which is not preferable from the viewpoint of the aesthetic appearance of the packaging form.

[0005] For this reason, if the fin seal band is heat-sealed and adhered to the tubular film packaging material except for the knob, the above-mentioned disadvantages are solved and the appearance is excellent. However, in this case, the area between the base of the fin seal strip and the tab is opened by pulling the tab with a finger and pulling the tab together with the opening tape to tear open the tubular film packaging 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 a finger, if the width of the knob is wide, since the knob is formed from parallel cuts, the width of the bonding area is also wide, and it is difficult to peel off the bonding area. Strong power is required. For this reason, opening resistance becomes large, and it becomes difficult for children and elderly people with weak power to open the package. In addition, if the user tries to forcibly peel it off, an opening error that cannot be opened normally along the opening tape may occur, or the article itself may be damaged.

Conversely, when the width of the knob is narrowed, it becomes difficult to pick the knob itself. Also, in this case, the peeling force applied to the adhesive area via the knob is reduced,
And because the interval between the cuts to form the knob is short,
A crack may run between the cuts, and the knob itself may be torn off from the fin seal band. On the other hand, an example of a cutter device for forming the above-described knob is incorporated in a turret type packaging machine disclosed in Japanese Patent No. 3044199, but this known cutter device includes a receiving base for the cutter in each pocket. Therefore, the folding turret itself becomes heavy, and 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 circumstances, and it is an object of the present invention to provide a fin seal having a knob which not only excels in aesthetic appearance of a packaged form but also can be easily and reliably opened. An object of the present invention is to provide a turret type packaging machine suitable for increasing the packaging speed of a fin seal package while providing a package.

[0009]

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

According to the fin seal package having the above-mentioned knob, when the knob is pinched and pulled, a crack runs along the opening tape from the tip of each notch, and at the same time, the adhesive area connected to the root of the knob is pulled. The tubular film packaging material is torn along the opening tape, and the package is opened. Here, the width of the knob defined between the cuts is oblique in the other cut, so that even if a sufficient width for picking the free end of the knob is secured, the width of the knob is viewed in the longitudinal direction of the fin seal band. The root width of the pick does not become undesirably wide. Therefore, even if the width of the free end of the knob is large, the width of the adhesive area connected to the root of the knob is small, so that the adhesive area can be easily peeled off and the opening resistance is small. Also, since the notch forming the knob has a difference in the cut length, the interval between the ends of the notch is wider than the root width of the knob, a crack running from the tip of the notch is connected, and the knob itself is torn off Not even.

Further, the above-mentioned fin seal package is obtained by the turret type packaging machine of the present invention (Claim 2). The turret type packaging machine includes a folding turret that can be rotated intermittently and a turret of the folding turret. Provided at intervals in the circumferential direction, sequentially move to the entrance stage, fin seal stage, knob forming stage and exit stage with intermittent rotation of the folding turret, and at the entrance stage, remove the article with the film packaging material with the opening tape. At this time, the film wrapping material is wound around the article in a U-shape, a plurality of pockets for projecting both ends of the film wrapping material from the article as a pair of body flaps, and a folding turret at a fin seal stage. Is located outside the box and receives the goods and film packaging material from the entrance stage. A first sealing device for forming a fin seal band for closing the film packaging material in a tubular shape by heat-sealing the back surfaces of the front end portions of the both body flaps in a state of being overlapped with each other, When the pocket is moved from the fin seal stage, cuts are respectively 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 width direction of the fin seal band is formed as a knob. And a second sealing device which is provided outside the folding turret and which folds a fin seal band having a knob toward an article and removes the knob to heat seal the tubular film packaging material.

The cutter device is fixedly disposed in the vicinity of the outer periphery of the folding turret and receives a fin seal band, a movable plate which cooperates with the pedestal to sandwich the fin seal band, A first movable blade that is provided so as to be able to approach and separate from the base and forms the one notch extending parallel to the opening tape in the fin seal band; A second movable blade that extends obliquely toward the opening tape in the fin seal band and forms another cut having a cut length longer than the one cut as viewed in the width direction of the fin seal band.

According to the turret type packaging machine described above, after the film wrapping material is received together with the article in the pocket of the entrance stage, when the fin seal stage and the pinch molding stage are sequentially positioned, the film wrapping material is received. The fin seal band is formed on the fin seal band, and the above-mentioned knob is formed on the fin seal band. Thereafter, the fin seal band is folded toward the article by the second sealing device,
Then, the tubular film packaging material is heat-sealed except for its knob.

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

[0015]

FIG. 1 schematically shows a turret type packaging machine for a fin seal package. The turret type packaging machine includes a folding turret 2 shown by a dashed line. The folding turret 2 has a rotating shaft cantilevered by the body frame and can rotate intermittently 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 performing a subsequent packaging step extend horizontally. 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 includes a plurality of suction belts (not shown).
It is composed of More specifically, film packaging material S
Is obtained by cutting a film web F fed from the film roll FR along the feeding path toward the feeding line 8 at predetermined intervals, and includes a pinch roller above the feeding line 8. Feed roller 10
Also, a cutter roller 12 for cutting the film web F is disposed, and the feed roller 10 and the cutter roller 12 are rotated by servo motors 14 and 16, respectively. 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 in the middle of the feeding path of the film web F, and a lower portion of the tape suction belt 18 is in a state of overlapping a part of the feeding path. A tape web T fed from a tape reel TR is guided to the tape suction belt 18, and the tape web T is fed by a feed roller 20 having a pinch roller. Note that one surface of the tape web T is an adhesive surface to which an adhesive is applied.

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 of a predetermined length. This opening tape T
T is supplied to the tape suction belt 18. The surface of the opening tape TT opposite to the adhesive surface is attracted to the tape suction belt 18, and is supplied toward the feeding path of the film web F as the tape suction belt 18 runs.

The drive roller of the tape suction belt 18, the feed roller 20 and the cutter roller 22
Are also rotated by servo motors 24, 26, 28,
Then, the suction belt of the feeding line 8 is also run by a servomotor (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 with the supply, and for this attachment, the film web F is attached to the lower portion of the tape suction belt 18.
A press roller (not shown) is disposed with the. As is clear from FIG. 1, the opening 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 as necessary above the feed roller 10 in the transport path of the film web F, and this cutter roller 30 is also rotated by the servo motor 32. The cutter roller 30 is positioned on a passage line of the opening tape TT attached to the back surface of the film web F, and intermittently forms a half cut 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 servo motors 14, 16,
24, 26, 28, 30, etc. are electrically connected to a controller (not shown), which controls the rotation of each servomotor to form an opening tape TT and a film packaging material S having a half cut, and Then, the film packaging material S is supplied to a predetermined position on the payout line 8. FIG.
As shown in the figure, the folding turret 2 has 6
It has two pockets 34, which 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.

As shown in FIG. 2, the folding turret 2 rotates intermittently in a counterclockwise direction, and the pockets 34 move along with the intermittent rotation so that an entrance stage, a fin seal stage, a tab forming stage, an exit stage, and two idle stages (not shown). Are sequentially moved and positioned. That is, the folding turret 2 is intermittently rotated by 60 °. In addition, as is clear from FIG. 2, the entrance stage and the exit stage are at the same height level position as the supply line 4 and the packaging line 6 for the article A.

Now, when one pocket 34 is positioned at the entrance stage, and the above-described film packaging material S is supplied between the pocket 34 of the entrance stage and the supply line 4, the top of the supply line 4 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 body folding of the film packaging material S is performed, and both end portions of the film packaging material S are a pair of body flaps BF. _L, protrudes from the end face of the articles a as BF _S.

Here, as seen from FIG. 2, when viewed in the intermittent rotation direction of the folding turret 2, the front trunk flap BF
_L is longer than the rear trunk flap BF _S , and the trunk flap BF
Dimensional difference corresponding to the height H of the articles A between the _L and the trunk flap BF _S is ensured. Thus, 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, although one end of the tear tape TT affixed to the film packaging material S has reached to the vicinity of the distal end of the barrel flaps BF _L, however, the other end of the tear tape TT will reach the cylinder flap BF _S Not. In addition, the end face of the article A is a rear end face E when viewed in the extrusion direction of the article A.
The end face E is slightly projected from the outer periphery (pocket 34) of the folding turret 2.

Thereafter, 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-described fin seal stage, and is positioned on this fin seal stage. On the fin seal stage, a first seal device 36 is disposed outside the folding turret 2, and the first seal device 3
6 cylinder flap BF _L, the BF _S and another heat-sealing to form a fin seal band.

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

The receiving heater block 38 includes a mounting member 42.
The attachment member 42 extends in the width direction of the folding turret 2 and is disposed along the radial direction thereof. A pair of brackets 44 are provided above the mounting member 42 and are spaced apart from each other in the width direction of the folding turret 2, and one end of a rotating shaft 46 is mounted on the brackets 44. The rotation shaft 46 rotates integrally with the bracket 44,
Thereby, the receiving heater block 38 can rotate about the rotation shaft 46 as shown by a two-dot chain line in FIG.

The rotating shaft 46 also extends in parallel with the axis of the folding turret 2, and the other end is rotatably supported by the above-mentioned body frame via a bearing sleeve 48. FIG. 3 shows a part of the bearing sleeve 48. 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 thereof.
_L is no longer generally convex in the width direction of the folding turret 2 as compared to upper portion 50 _U, it is arranged along the radial direction of the folding turret 2 (see FIG. 4).

A roller 52 is rotatably supported on the body frame side surface 51 of the upper end portion 50 _U of the mounting member 50, 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 as viewed in the rotational direction of the folding turret 2 has a larger length than the other end.
Is positioned radially outward of the.

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

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

As shown in FIG. 4, a tension coil spring 74 is provided between the release lever 66 and the pin 72 on the fixing member 68. The tension coil spring 74 has a groove as shown 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 is connected to a driving member 78 via a 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.

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

Further, the driving member 78 has a roller 82 on the surface thereof on the side of the body frame 64, and the roller 82 is fitted in a guide groove 86 of a 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 rotation shaft 88. As shown in FIG. 4, the rotating shaft 88 extends in the axial direction of the folding turret 2 and is rotatably supported by a bearing sleeve 90. The bearing sleeve 90 is formed integrally with the support table 62 described above.

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

The link rod 98 is connected to the swing link 10.
6 and is connected to a link rod 108, and this link rod 108 is connected to a cam mechanism 110. Like the cam mechanism 100, the cam mechanism 110 also includes 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 rotating shafts 46 and 88 at a predetermined timing via the above-described link mechanism. Thereby, the receiving heater block 38 is rotated by the rotating shaft 46.
, And comes into contact with and separates from the outer periphery of the folding turret 2. Specifically, when the pocket 34 that has received the film packaging material S and the article A is positioned on the fin seal stage, the receiving heater block 38 is closed from the open position indicated by the solid line to the closed position indicated by the two-dot chain line as shown in FIG. Position, and in this closed position, the leading end thereof abuts on the lower surface of the article A via the film wrapping material S. As a result, the receiving heater block 38 is connected to the short body flap BF of the film wrapping material S. Assigned to _S.

On the other hand, the rotation of the rotation shaft 88 is controlled by the swing lever 84.
As a result, 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 linked 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, the mounting member 50,
The folding heater block 40 is reciprocated simultaneously with the cam groove 56.
Up and down according to the groove shape. More specifically, in FIG. 6, when the folding heater block 40 moves from the solid line open position to the two-dot chain line closing position, the folding heater block 4
0 moves from the open position of the solid line to the closed position of the two-dot chain line.

Thus, the folding heater block 40
When but moving from the open position to the closed position, the pocket 34 of the aforementioned fin seal stage is positioned, folding heater block 40 on the end face of the articles A torso flaps BF _L of the longer of the film packaging material S To the receiving heater block 38 which 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 . FIG. 2 shows a state where both the receiving heater block 38 and the folding heater block 40 have moved to the closed position.

Here, as clearly shown in FIGS. 7 and 8, each of the folding heater block 40 and the receiving heater block 38 has a heater 112 therein, and as described above, the body flap BF when _L of tip and clamping the trunk flap BF _S, and heat sealed by heating them from both sides, by the heat sealing,
May form a fin seal strip in a short time to the tip and barrel flaps BF _S of the body flap BF _L. Note that, at this time, the fin seal band is in a state of protruding from the end surface of the article A radially outward of the folding turret 2.

As shown in FIG. 7, a handling 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 handle member 118 has an L-shaped cross section and extends over the entire area of the folding heater block 40 in the longitudinal direction. More specifically, the handling member 118 is made of a heat-resistant silicone rubber sheet, and a part thereof slightly projects from the lower surface of the folded heater block 40.

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 above-mentioned fin seal band. As described above, the folded 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.

Further, the elastic sheet 120 of receiving the heater block 38, when the distal and trunk flap BF _S of the body flap BF _L between the receiving heater block 38 and folding the heater block 40 is sandwiched, these adhesion And contribute to the formation of a more stable fin seal band FS. Note that the fin seal band FS includes one end of the opening tape TT described above.

[0046] When the formation of the fold and fins sealing strip FS torso flaps BF _L of the above-described manner a film packaging material S is completed, the heater block 38, 40 is moved to the open position, whereas, folding turret 2 is intermittently rotated Then, the article A closed in a cylindrical shape by the film packaging material S having the fin seal band FS is moved together with the pocket 34 toward the next pinching stage, and is positioned on the pinching stage.

As shown in FIG. 2, a cutter device 121 is provided on the outside of the folding turret 2 on the pinch forming stage, and the cutter device 121 is fixedly disposed near the outer periphery of the folding turret 2. It has. The receiving base 122 is located in front of the fin seal band FS positioned on the pinch forming stage when 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 body frame 64 via the attachment member 124.

A rotating shaft 126 is disposed above the receiving base 122, and the rotating shaft 126 also extends in the width direction of the folding turret 2, and is rotatably supported on the body frame 64 via a bearing sleeve 128. Have been. Rotation axis 1
A cutter holder 130 is attached to 26, and the cutter holder 130 rotates integrally with the rotation shaft 126. Also,
The cutter holder 130 and the bearing sleeve 1 are provided on the rotating shaft 126.
A swing member 132 is rotatably mounted between the swing member 132 and
A holding member 134 is attached to the lower end of the swing member 132. The holding member 134 extends below the cutter holder 130 in the width direction of the folding turret 2, rotates around a rotation shaft 126, and can be brought into and out of contact with the receiving base 122. FIG. 2 shows the holding member 13.
4 is shown in contact with the cradle 122.

Further, a pair of protrusions 136 and 138 are provided on the upper portion of the swinging member 132, and these protrusions 136 and 138 are provided.
138 is the swing member 13 as viewed in the axial direction of the rotation shaft 126.
It is located closer to the bearing sleeve 128 than is 2, and is separated from each other in the circumferential direction of the swing member 132. And FIG.
The stopper 140 is attached to the left protrusion 138, and the stopper 140 projects toward the right protrusion 136. Note that the amount of protrusion of the stopper 140 is adjustable.

Further, as shown in FIG.
A spring receiving member 142 is attached to the swing member 132 between the swing member 132 and the bearing sleeve 128, and the spring receiving member 142 also rotates integrally with the rotation shaft 126. The spring receiving 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 bridged between the upper end of the spring receiving member 142 and the protrusion 136, and the compression coil spring 144 is connected to the protrusion 136, that is, the swing member 132.
Are pressed and urged clockwise as viewed in FIG.

The first and second movable blades 146 and 148 are attached to the lower portion of the cutter holder 130, and the first and second movable blades 146 and 148 are separated from each other in the width direction of the folding turret 2. 130
Protruding from the lower surface. When in the state shown in FIGS. 2 and 10, the first and second movable blades 146 and 148 of the cutter holder 130 are connected to the opening 1 formed in the holding member 134.
The state has been entered into the relief holes (not shown) of the receiving base 122 from within the interior.

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

On the other hand, the rotating shaft 126 protrudes from the body frame 64, and its protruding end is connected to a link rod 147 via a 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 has its camshaft 102 and lever similarly to the cam mechanisms 100 and 110 described above. It is connected to a cam mechanism 154 that shares the shaft 104.

Therefore, as the cam shaft 102 rotates,
The rotation shaft 126 is reciprocated via the cam mechanism 154 and the link mechanism described above. Now, as shown in FIG. 11, when the fin seal band FS is positioned on the pinch forming stage and the fill seal band FS is received by the receiving table 122, the holding member 134 is at a standby position away 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 at the standby position separated from the receiving table 122. Therefore, the fin seal band FS can reach the receiving base 122 without interfering with the holding member 134.

When the holding member 134 is at 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. The stopper 140 of the swing member 132
Are in contact with the upper end of the spring receiving member 142.
Also, at this time, as is clear from FIG. 12, the first and second movable blades 146 and 148 are in a state where their blades are accommodated in the opening 150 of the holding member 134.

When the rotation shaft 126 is rotated clockwise from the state shown in FIGS. 11 and 12, the spring receiving member 142 also rotates together with the rotation shaft 126, and this rotation is performed by the compression coil spring 144. , The swinging member 132, that is, the holding member 134 is rotated clockwise, and the holding member 134 holds the fin seal band FS between itself and the receiving base 122 as shown in FIG. It is located 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 positions near the fin seal band FS as shown in FIG. Be positioned.

Therefore, thereafter, the holding member 134 is in the operating position in contact with the receiving base 122 via the fin seal band FS, and the holding member 134 does not further rotate clockwise. However, between the spring receiving member 142 and the protrusion 136 of the swing member 132, the compression coil spring 1
15, the spring receiving member 142 is separated from the stopper 140, and can be rotated clockwise while contracting the compression coil spring 144, as shown in FIG. Allows further clockwise rotation of. As a result, the cutter holder 130 is further rotated clockwise by the further clockwise rotation of the rotation shaft 126, and as shown in FIG.
The movable blades 146, 148 protrude from the opening 150 of the holding member 134 into the clearance groove of the receiving base 122, and the fin seal band F
A pair of cuts are formed in S. These cuts form knobs in the fin seal band FS.

Thereafter, when the rotating shaft 126 is rotated counterclockwise, the first and second movable blades 146 and 148 escape from the clearance grooves of the receiving base 122 and are housed in the openings 150 of the holding member 134. Then, the upper end of the spring receiving member 142 contacts the stopper 140 again (see FIG. 13).
When the rotating shaft 126 is further rotated counterclockwise, the spring receiving member 142 rotates the swinging member 132, that is, the holding member 134, counterclockwise from the operating position,
Return to its standby position. When the holding member 134 returns from the operating position to the standby position, the first and second movable blades 146
148 also follows the holding member 134 and returns to its standby position.

FIG. 17 shows the first and second movable blades 146, 146.
148 shows a state immediately after the notch X is formed by cutting into the fin seal band FS. As is clear from FIG. 17, the first movable blade 146 is a tape TT for opening the fin seal band FS.
Is formed in parallel with one end of the second movable blade 14.
8 forms a cut obliquely toward one end of the opening tape TT, and the cut length L ₁ formed by the first movable blade 146 is equal to the cut length formed by the second movable blade 148. shorter than L _2, step these cut lengths are ensured. The tip of the cut by the first movable blade 146 is slightly overlapped with one end of the opening tape TT when viewed in the width direction of the fin seal band FS, and the tip of the cut by the second movable blade 148 is It is in a state of being sufficiently overlapped with one end of the opening tape TT. Further, when focusing on the root of the knob X formed by the 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 defining the root. .

FIG. 17 shows the half cut H described above.
The formation position of C is also shown, and this half cut H
C, the fin seal strip FS, and more particularly, located between the base of base and knob X of the trunk flap BF _S to form a fin seal strip FS as shown in FIG. 18, cross the base of the knob X Extend in the direction of FIG. 19 shows a half-package of the article A immediately after the knob X is formed on the fin seal band FS at the knob forming stage. In FIG. 19, a 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 containing the semi-wrapped body is positioned at the next exit stage. The outlet stage is provided with a discharge pusher (not shown). The discharge pusher discharges the half package from the pocket 34 of the outlet 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.
L extends above the packaging line 6 in parallel with the packaging line 6, and the end on the side of the folding turret 2 is bent upward.
It is shaped like a letter. The fin seal band FS, on which the knob X is formed, protrudes radially outward of the folding turret 2, as described above, but the semi-package moves from the knob forming stage to the exit stage. Then, the fin seal band FS is folded back in the tangential direction on the outer periphery of the folding turret 2 by the folding / folding guide 156, and the pocket 3 is folded at the exit stage.
When the fin seal band FS is discharged from the wrapper 4, the folded fin seal band FS is folded into the surface of the semi-packed body (the surface on the side connected to the end surface of the article A and 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 has a built-in heater 162, and is attached to a rotation shaft 168 via a bracket 164 and a rotation body 166. The rotation shaft 168 extends in the width direction of the folding turret 2 and is rotatably supported by the body frame 64 via a bearing sleeve (not shown).

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

Therefore, when the camshaft 102 is rotated, the rotating 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 rotating shaft 168. 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 described above, the exit stage pocket 3
When the half package is discharged onto the packaging line 6 from, the fin seal band FS folded toward the half package exits from the folding / folding guide 156, and the heater block 1
It is located below 60. Thereafter, the heater block 160 is lowered to press the fin seal band FS toward the half package, and at the same time, heat seal the fin seal band FS to the film packaging material S of the semi package.

Here, the heat seal of the fin seal band FS by the heater block 160 is performed only in the hatched area X, and more specifically, in the hatched area as shown in FIG. Implemented. Therefore, the knob X formed on the fin seal band FS is not heat-sealed to the semi-wrapped body, however, the space between the base of the knob X and the base between the fin seal band FS is heat-sealed. It should be noted that

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

In order to open the fin seal package shown in FIG. 20, first, the knob X of the fin seal band FS is picked up with a finger, raised, and the knob X is pulled in the direction along the opening tape TT to thereby obtain the knob X. Cracks respectively run along the opening tape TT from the tips of the pair of cuts forming, and the film packaging material S is torn together with the opening tape TT. Here, since the width of the knob X at the edge of the fin seal band FS is wider than that at the base side, the knob X can be easily picked.

The root of the knob X and the fin seal band FS
Although between the base undergoing heat-sealing, as viewed in the longitudinal direction of the fin seal strip FS, base width of the knob X (W _1, see FIG. 17), since the narrower than the width of the tip, the knob The width of the heat sealing area between X and the base of the fin seal band FS, that is, the bonding area is also reduced. 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.

[0071] Furthermore, the half-cut HC mentioned above the fin seal strip FS (see FIG. 18) are formed, can be easily broken trunk flap BF _S fin sealing strip FS, fin seal package Opening is easier. On the other hand, the interval (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 ends of the cuts Y and Z are connected to one end of the opening tape TT. The fin-seal package can be reliably and stably opened without the cracks running from the tips of the cuts Y and Z being directly connected to each other and the knob X itself being broken because it overlaps the portion. be able to.

On the other hand, focusing on the turret type packaging machine for producing the above-described fin seal package, the first sealing device 36, the cutter device 121, and the second sealing device 1 described above.
Since each of 58 is arranged outside the folding turret 2, the weight of the folding turret 2 does not increase. This means that the intermittent rotation of the folding turret 2 can be performed at a high speed, and the packaging speed of the fin seal package can be increased.

In the first sealing device 36, the receiving heater block 38 and the folding heater block 40
Each order heater 112 is incorporated in the can be heated simultaneously from both sides of the tip and barrel flaps BF _S of the body flap BF _L superimposed to each other, be formed in a short time a fin seal strip FS 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.

Further, if the folding turret 2 is reduced in weight, when it is applied to the packaging of articles of different sizes,
The replacement of the folding turret 2 can be easily performed.
The present invention is not limited to the above-described embodiment, 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.

If a row of holes indicating Braille is formed on the knob X, even a user who is blind can easily grasp the position of the knob X. In this case, the braille hole row is provided with a piercing needle in the holding member 134,
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 picked by cutting one side parallel to the opening tape and the other side obliquely. Since it is molded, even if the tip width of the knob is widened, the root width of the knob can be narrowed, and the fin seal package can be easily opened. Moreover, since a step is secured between the leading ends of the cuts, the interval between the leading ends of the cuts is wider than the root width of the knob, so that the opening can be performed reliably and stably.

The turret type packaging machine of the present invention (Claim 2)
According to the method, the weight of the folding turret can be reduced, so that the intermittent rotation speed of the folding turret can be increased, and the packaging speed of the fin seal package can be increased.
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 an increase in packaging speed.

[Brief description of the drawings]

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

FIG. 2 is a view showing the vicinity of a folding turret in FIG. 1;

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

FIG. 6 is a view 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 folding 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 partially cut away.

FIG. 11 is a diagram illustrating a standby position of a holding member in the cutter device.

FIG. 12 is a diagram illustrating a standby position of a movable blade in the cutter device.

FIG. 13 is a view showing an operation position of a holding member.

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

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

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

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

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

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

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

FIG. 21 is a perspective view showing a state in which the knob is pulled.

[Explanation of symbols]

 2 Folding turret 34 Pocket 36 First sealing device 38 Receiving heater block 40 Folding heater block 121 Cutter device 122 Receiving stand 130 Cutter holder 134 Nipping member 146 Movable blade 148 Movable blade A Article S Film packaging material TT Opening tape FS Fin seal X Knob Y Notch Z Notch HC Half cut

[Procedure amendment]

[Submission date] April 3, 2001 (2001.4.3)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E051 AA03 AB06 BA16 CA02 CA08 CB03 EA10 EB03 FB03 FC03 FD01 HA02 HA08 HC01 HC03 HE01 JA02 JA08 KA02 KA03 KA07 KA08 KA09 KA10 KB01 LA02 LA03 LA04 LA07 LA08 LA09 LA10 LB03

Claims (3)

[Claims] 1. A fin seal strip heat-sealed in a state where a film wrapping material with an opening tape is wound around an article in a cylindrical shape, and the back surfaces of both ends of the cylindrical film wrapping material are overlapped with each other. A notch formed on a part of the width of the fin seal band by making a cut from both edges of the fin seal band on both sides of the unsealing tape of the fin seal band; In a fin-sealed package formed by folding a seal band toward the article and heat-sealing the tubular film packaging material except for the knob, the one cut extends in parallel with the opening tape, and the other cuts. The notch extends obliquely toward the opening tape, and has a cut length longer than the one cut in the width direction of the fin seal band. Le package. 2. A folding turret intermittently rotatable, provided at intervals in a circumferential direction of the folding turret, and an entrance stage, a fin seal stage, a pinching stage, and an exit are provided with the intermittent rotation of the folding turret. Sequentially moving to a stage, receiving the article together with the film wrapping material with the opening tape at the entrance stage, and wrapping the film wrapping material around the article in a U-shape at this time; And a plurality of pockets protruding from the article as a pair of body flaps; and a pocket provided outside the folding turret at the fin seal stage and receiving the article and the film packaging material from the entrance stage. Heat seal with the backs of the front ends of the two body flaps A first sealing device for forming a fin seal band that closes the film packaging material in a tubular shape; and, when the pinch forming stage is provided outside the folding turret, the pocket moves from the fin seal stage. A cutter device that cuts into both sides of the opening tape of the fin seal band from the edge of the fin seal band, and forms a part of the width of the fin seal band as a knob. A second sealing device that is provided and folds the fin seal band having the knob toward the article, and heat-seals the tubular film packaging material except for the knob. The cutter device includes the folding turret. Fixedly located near the outer circumference of the
A pedestal for receiving the fin seal band, a movable plate for cooperating with the pedestal to sandwich the fin seal band, A first movable blade that forms the one notch extending parallel to the tape; and a first movable blade that contacts and separates from the receiving base in conjunction with the first movable blade;
The fin seal band includes a second movable blade that extends obliquely toward the opening tape and forms another cut having a cut length longer than the one cut as viewed in the width direction of the fin seal band. A turret-type packaging machine for fin-sealed packages. 3. The fin seal package according to claim 2, wherein the first seal device includes a pair of heater blocks for sandwiching the distal end portion of the body flap from both sides and heat sealing. Turret type packaging machine.