JPH1059312A - Turret type overwrapping machine and related method for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turret type overwrapping machine and related method for packaging which excels in wide applicability, being applicable to objects for packaging of various sizes in a simple manner. SOLUTION: In a turret type overwrapping machine which executes a related packaging method there are provided side-turning-up tuckers 120 which, when an object for packaging Ao, following a trunk seal, is set at a second angle-of- rotation position P2 together with a pocket of the turret, tuck down the two ends of respective side rings SR at the trunkfolding seal UF, forming a pair of side flaps SF and simultaneously turning up one of the side flaps SF, a movable tucker plate 174 which in the process where the object for packaging Ao is moved from the second angle-of-rotation position P2 to an outlet angle-of- rotation position PEX tucks down the other of the side flaps SF, and a turning- back piece 316 which in the process where the object for packaging Ao is discharged from the outlet angle-of-rotation position PEX onto a discharge- conveyance passageway turns back one of the side flaps SF. On the discharge- conveyance passageway a primary heat-seal device tucks down one of the side flaps SF and seals it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret type overwrapping machine for packaging box-shaped articles to be packaged and a method for packaging the same.

[0002]

[Related Background Art] An overwrapping machine is a machine for wrapping a box-shaped article to be wrapped with a wrapping sheet such as paper or film, and includes a machine using an intermittently rotating turret. is there. According to this type of turret-type wrapping machine, an article to be packaged is received in one pocket of the turret together with a packaging sheet, and the packaging sheet is first folded in a U-shape along the outer surface of the article to be packaged. It is formed on a body folded sheet. Thereafter, with the intermittent rotation of the turret, the pair of body flaps of the body-folded sheet are sequentially folded and adhered to each other in the process of sequentially moving the packaged goods together with the pockets, whereby the packaged goods are left and right. Except for the side of, it is in a state of being wrapped by the body folding sheet. Then, in the process of discharging the semi-packaged product from the turret pocket, the left and right sides of the body-folded sheet are folded and sealed, so that the packaging of the packaged product is completed.

[0003]

In the turret type wrapping machine described above, each pocket of the turret is set to a size suitable for the article to be packaged in order to accurately fold the packaging sheet. And therefore the components forming each pocket of the turret need to be replaced when the size of the package is different.

[0004] Further, regarding the side of the body folded sheet,
Since the side folds are made by the fold parts that match the width and thickness of the wrapped product, if the size of the wrapped goods is different, it is necessary to change not only the size of the fold parts but also the mounting position There is. In order to replace the above-described pocket components and folded parts, not only must the components and folded parts be prepared in advance for each article to be packaged, but also a great deal of time is required for their replacement and assembly. It is laborious and it is practically difficult to apply the turret wrapper to packages of various sizes.

The present invention has been made in view of the above circumstances, and has as its object to provide a turret which can be easily applied to articles to be packaged having various sizes and has excellent versatility. An object of the present invention is to provide a mold wrapping machine and a packaging method thereof.

[0006]

The above object has been achieved by the present invention, and a turret-type wrapping machine according to claim 1 comprises:
A plurality of pockets provided on the turret and formed into a body-folded sheet formed by folding the package sheet along the outer surface of the packaged article when receiving the box-shaped packaged article together with the packaging sheet at each position of the inlet rotation; When the pocket is positioned from the entrance rotation angle position to the first rotation angle position, a pair of body flaps of the body fold sheet are sequentially folded, and the body sealing means for bonding and overlapping each other, and the pocket is moved from the first rotation angle position to the first rotation angle position. When positioned at the two rotation angle positions, the left and right sides of the body-folded sheet are folded at both ends to form a pair of side flaps on each side, and the first rotation angle position among the pair of side flaps Side flap folding means for folding one of the side flaps located on the side, and the pocket is moved from the second rotation angle position to the exit rotation angle position. Flap folding means for folding the other side flap of the pair of side flaps when moving, and a semi-wrapped product wrapped in a body folded sheet extends from inside the pocket positioned at the outlet rotation angle position outside the turret. In the process of being discharged onto a predetermined carry-out path, a side flap fold-back means for folding back one side flap, and when the semi-packaged product is positioned at a predetermined position on the carry-out path, one side flap is Side sealing means for folding over the side flaps, overlapping each other, and adhering to each other.

According to a first aspect of the present invention, there is provided a turret type wrapping machine, wherein a first adjusting means for adjusting a depth and an inner dimension of each pocket corresponding to a length and a thickness of an article to be packaged, and a side flap folding means. Second adjusting means for adjusting the operation positions of the side flap folding means, side flap folding back means and side sealing means with respect to the body folded sheet in accordance with the width of the packaged article, and the level of the carry-out path with respect to the outlet rotation angle position And third adjusting means for adjusting the position in accordance with the thickness of the article to be packaged.

According to the turret type wrapping machine of the first aspect, the size of each pocket is adjusted by the first adjusting means in accordance with the size of the article to be packaged, specifically, the width and length thereof. Also, according to the width of the article to be packaged by the second adjusting means,
With respect to the side of the body-folded sheet, the operation positions of the above-described folding, folding, folding back, and side seal are adjusted. Then, the level position of the carry-out path with respect to the outlet rotation angle position of the turret is adjusted by the third adjusting means according to the thickness of the article to be packaged.

As a result of the adjustment by the first to third adjusting means,
For packaged items of various sizes, folding of the packaging sheet, folding of the body seal, folding and folding of side flaps,
Folding back and side sealing are each possible. In the turret-type wrapping machine according to claim 2, the second adjusting means can simultaneously adjust the respective operation positions in conjunction with each other,
These adjustments are made easily and quickly.

The turret type wrapping machine according to claim 3 is a
There is further provided fourth adjusting means for adjusting the operation position of the side flap folding means with respect to the rotation angle position in accordance with the thickness of the article to be packaged. At the same time as starting to move from the position toward the outlet rotation angle position, the folding of one side flap by the side flap folding means is immediately started.

According to a fourth aspect of the present invention, when the turret pocket is at the entrance rotation angle position, the turret pocket wrapper inserts the wrapped product together with the wrapping sheet into the pocket, and inserts the wrapped sheet into the wrapped product. Forming the folded body sheet into a U-shape along the outer surface; and, when the pocket is positioned at the first rotation angle position from the entrance rotation angle position, sequentially folding the pair of body flaps of the body folding sheet. Superimposing and bonding to each other, the pocket is the first
When positioned from the rotation angle position to the second rotation angle position,
The left and right sides of the body-folded sheet are folded at both ends to form a pair of side flaps on each side, and one of the pair of side flaps located on the first rotation angle position side. A step of folding up the side flap, and a step of folding the other side flap of the pair of side flaps when the pocket moves from the second rotation angle position to the exit rotation angle position;
In the process of discharging the semi-packaged product from the pocket at the outlet rotation angle position, a step of folding back one side flap of the body folded sheet, folding one side flap, overlapping on the other side flap and bonding to each other And a step of performing

According to the packaging method of the fourth aspect, in the turret type wrapping machine, while adjusting the depth and the inner dimension of the pocket corresponding to the length and thickness of the article to be packaged,
With regard to the side flaps of the body-folded sheet, the wrapping, folding, folding back, and the operation position of the seal are adjusted only according to the width of the wrapped product, and the wrapping of the wrapped product of various sizes can be performed. It becomes possible.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, there is schematically shown the entire structure of a turret type wrapping machine, and the flow of an article to be packaged and a packaging film therein. Here, the packaged product is a thin disk case containing a compact disk. The overwrapping machine is provided with a carry-in path 4 for the article to be packaged A extending horizontally toward the turret 2, and the carry-in path 4 is provided with an automatic supply unit 6 and a card supply unit 8 sequentially from the upstream side. I have. Although not shown in detail in FIGS. 1 and 2, the automatic supply unit 6 can continuously transport the packaged articles A0 on the carry-in path 4 at regular intervals. The card supply unit 8 supplies the cards B one by one toward the individual packages A0 on the carry-in path 4, and the supplied cards B are transferred to the packages A0 along with the transport of the packages A0. It is folded at the front edge and is put on the front edge.

Between the end of the carry-in path 4 and the turret 2, a film sheet (packaging sheet) FS is sequentially supplied, and the film sheet FS is formed of a packaging film fed from a film roll FR. RF
Is cut at predetermined lengths. In addition, a tear tape bobbin TB is arranged in the middle of the feeding path of the packaging film RF from the film roll FR, and the tear tape TT fed from the tear tape bobbin TB is attached to one side edge of the packaging film RF. Can be stuck. Therefore, the film sheet FS obtained from the packaging film RF is a packaging sheet having the tear tape pieces Tp (see FIG. 3).

[0015] The packaged article A0 that has reached the end of the carry-in path 4
Is inserted together with the film sheet FS into one pocket of the turret 2, that is, a pocket at the entrance rotation angle position. With this insertion, the film sheet FS is folded into a U-shape along the outer surface of the article to be packaged A0, whereby the film sheet FS is formed into a folded sheet that wraps the article to be packaged A0 from above and below. Here, both ends of the body-folded sheet UF project from the rear edge of the article to be packaged A0, and a pair of left and right side edges thereof also project from the side surface of the article to be packaged A0.

Thereafter, when the turret 2 is rotated about its rotation axis 10 and its pockets are sequentially positioned from the entrance rotation angle position to the first rotation angle position, the second rotation angle position, and the exit rotation angle position, The folded body trunk flap, heat sealing thereof, and folding of the side flaps are performed on the folded body folded sheet UF. And
When the article to be packaged A0 is discharged from the inside of the pocket at the exit rotation angle position to a predetermined position on the carry-out path 12, the final folding of the side flap in the body folded sheet UF and the primary heat sealing at that position are performed. As a result, the packaged product A0 becomes the packaged product A1 completely packaged by the body folded sheet UF, that is, the film sheet FS. After that, the packaged product A1 is subjected to secondary heat sealing on the side flaps and is conveyed to the next step. The folding of the trunk flap and the side flaps and the heat sealing in the above-described trunk fold sheet UF will be described later.

As is apparent from FIG. 3, the package A1 is provided with a tear tape piece Tp. If the tip is pinched and the tear tape piece Tp is pulled, the film sheet FS is cut along the tear tape piece Tp. Can be easily torn. In FIG. 3, the body flaps and side flaps of the film sheet FS (body folded sheet UF) are indicated by reference numerals EF and SF, respectively. Also, the packaged product A
Length, width and height (thickness) based on 0 transport direction
Are denoted by L, W, and H, respectively.

Next, referring to FIGS. 4 and 5, the turret 2 is specifically shown. The rotary shaft 10 of the turret 2 extends horizontally and is connected to a drive source (not shown), and the turret 2 can rotate intermittently in a counterclockwise direction (arrow C) as viewed in FIG. The turret 2 includes a pair of left and right side frames 12, which are separated from each other at a predetermined interval in the axial direction of the rotating shaft 10. Each side frame 12 is mounted on the mounting hub 14 so as to sandwich the mounting hub 14, and the mounting hub 14 is fixed to a sleeve 16 that rotates integrally with the rotating shaft 10. As is apparent from FIG. 4, each side frame 12 has six frame blades 18, and these frame blades 18 extend radially at equal intervals in the rotation direction of the turret 2. The respective frame blades 18 of one side frame 12 and the corresponding frame blades 18 of the other side frame 12 are opposed to each other, and the front side of each frame blade 18 located on the front side when viewed in the rotation direction of the turret 2. The edge is located on a radiation surface passing through the axis of rotation of the turret 2.

Six pockets 20 are formed between the pair of side frames 12, and these pockets 20 are arranged at equal intervals in the circumferential direction of the turret 2.
Since each pocket 20 has the same configuration, only one pocket 20 will be described below. The pocket 20 is formed between a fixed blade 22 and a movable blade 24. The fixed blade 22 has a base fixed to the mounting hub 14 and extends along the front edge of a pair of frame blades 18 facing each other. I have. Specifically, the fixed blade 2 facing the inside of the pocket 20
2 and the front side edges of the pair of frame blades 18 are located in the same plane.

On the outer surface of the fixed blade plate 22, a U-shaped bracket 26 is arranged along the outer surface. The bracket 26 is located at the base side of the fixed blade 22, and its open end is fixed to the mounting hub 14 together with the base of the fixed blade 22, and its closed end is fixed to the fixed blade 22 by screws. . More specifically, the open end of the bracket 26 is connected between the mounting hub 14 and the base of the fixed blade 22 while being sandwiched therebetween.

The bracket 26 is provided with a slider 28.
It is non-rotatable and slidably supported in the longitudinal direction of the fixed blade 22. As is clear from FIG. 6, a pair of left and right movable claws 30 are provided at both ends of the slider 28. These movable claws 30 are pocketed through rectangular cutouts 31 (see FIG. 5) formed on both side edges of the fixed blade 22. 22 protrudes. A screw shaft 32 is rotatably penetrated through the closed end of the bracket 26, and the tip of the screw shaft 32 extends toward the slider 28, and the thread at the tip is screwed into the slider 28. ing. On the other hand, a knob 34 is put on the other end of the screw shaft 32, and the knob 34 is connected to the screw shaft 34 and can rotate integrally with the screw shaft 34. Therefore, if the screw shaft 32 is rotated via the knob 34, the slider 28, that is, the pair of movable claws 30 can move in the longitudinal direction of the fixed blade 22 within the notch 31. Although not shown, if a scale is formed on the inner edge of the notch 31 in the fixed blade 22, the position of the pair of movable claws 30, that is, the depth of the pocket 20, can be detected.

An extended bracket portion 36 is integrally formed at the closed end of the bracket 26. The extended bracket portion 36 extends once toward the pocket 20 adjacent in the circumferential direction of the turret 2, and then extends into the adjacent pocket. 20 extend parallel to the movable blades 24. Extension bracket part 36
A blade holder 38 is disposed between the movable blade 24 and the adjacent movable blade 24. The blade holder 38 is formed of a stepped plate piece as is apparent from FIG. Blade holder 38 standing up toward extension bracket 36 side
A guide hole 40 and a screw hole 42 are formed at the distal end of the pocket 20. The guide hole 40 and the screw hole 42 extend in a direction orthogonal to the longitudinal direction of the adjacent pocket 20.
A guide rod 44 extending from the extension bracket 36 is slidably penetrated into the guide hole 40, and a screw formed at the tip of a screw shaft 46 is screwed into the screw hole 42. The screw shaft 46 rotatably passes through the extension bracket 36 and is supported by the extension bracket 36. The other end of the screw shaft 46 has a knob 48
The knob 48 is connected to the screw shaft 46 and can rotate integrally with the screw shaft 46. Therefore, the blade holder 38 is mounted on the screw shaft 46.
And is supported by the extension bracket portion 36 through the opening.

The movable blade 24 of the adjacent pocket 20 extends from the base of the blade holder 38 and is attached with play to the base. Specifically, a clamping plate 50 for clamping the base of the movable blade 24 is provided at the base of the blade holder 38, and the clamping plate 50 is connected to the blade holder 38 via a pair of mounting screws 52. ing. A projection 54 projecting toward the blade holder 38 is integrally formed on the holding plate 50, while a slit 56 for penetrating the projection 54 is formed at the base of the movable blade 24. The protrusion amount of the projection 54 is larger than the thickness of the movable blade 24, so that the movable blade 24 is allowed to have some backlash. Further, a base of a leaf spring 58 is sandwiched between the base of the blade holder 38 and the projection 54, and the leaf spring 58 extends toward the tip of the movable blade 24, and the tip of the leaf spring 58 is set via a set screw 60. And is fixed to the movable blade 24. Accordingly, the leaf spring 58 urges the tip of the movable blade 24 toward the inside of the pocket 20.

According to the pocket 20 described above, the depth can be adjusted by moving the pair of movable claws 30 in the longitudinal direction of the pocket 20 as described above. Further, when the screw shaft 46 is rotated via the knob 48, the blade holder 38 moves while being guided by the guide rod 44, so that the movable blade 24 of the pocket 20 comes into contact with and separates from the fixed blade 22. Thereby, the distance between the movable blade 24 and the fixed blade 22, that is, the inner height of the pocket 20 corresponding to the thickness of the article to be packaged A0 can be adjusted. Since notches 62 (see FIG. 5) are formed on both sides of the base of the movable blade 24, even if the inner height of the pocket 20 is reduced, the pair of movable claws 30 are formed.
Can penetrate the movable blade 24 through the notch 62. Also, in this case, if the scale plate 64 (see FIG. 7) is extended from the extension bracket portion 36 toward the blade holder 38, the position of the blade holder 38, that is, the movable blade 24, can be detected. The inner height can be easily adjusted.

As described above, the pocket 20 is a fixed blade 2
2 and the movable blades 24, the positions of the movable claws 30 and the movable blades 24 are simply adjusted, and according to the articles to be packaged A0 having various sizes,
Its size can be varied. Therefore, as shown in FIG. 4, when one pocket 20 of the turret 2 is positioned at the above-described entrance rotation angle position PIN on the side of the carry-in path 4, more specifically, the fixed blades 22 of the pocket 20 are carried in. When positioned in the same horizontal plane as the path 4, the pocket 20 can receive the packaged article A0 sent out from the carry-in path 4 together with the above-described film sheet FS. Here, the packaged product A0 is pushed into the pocket 20 until its front end surface contacts the pair of movable claws 30, so that the rear end surface of the packaged product A0 has its full length L.
Regardless of (see FIG. 3), the fixed blade 22 and the movable blade 2
Note that it protrudes slightly from the tip of 4.
That is, if the packaged product A0 moves with the rotation of the turret 2, the rear end face of the packaged product A0 has a slightly smaller curvature than the rotation locus of the open end of the pocket 2 as shown by a two-dot chain line in FIG. It moves along the locus D of a circular arc having a large radius. Here, when the packaged product A0 is received in the pocket 20, the allowable minimum width W of the packaged product A0 is set between the pair of frame blades 18 located on both sides of the pocket 20, as shown in FIG. , And the left and right sides project from the frame blade 18.

Since the tip of the movable blade 24 is urged toward the inside of the pocket 20 as described above,
The article to be packaged A0 is pushed into the pocket 20 together with the film sheet FS against the urging force from the movable blade 24. As a result, not only can the body folding of the film sheet FS utilizing the pushing of the packaged product A0, that is, the formation of the body folded sheet UF be performed reliably, but also the packaged product A0 can be securely held in the pocket 20. it can. Here, as shown in FIG. 4, the body folded sheet UF has a pair of body flaps EF protruding from the pocket 20 by a predetermined length.

In FIGS. 4 and 7, each pocket 20 of the turret 2 is shown with a different inner height in order to show that its inner height can be adjusted. When the turret 2 is intermittently rotated about its rotation axis 10 by 60 °, the next empty pocket 20 is positioned at the entrance rotation angle position PIN, in which the package A0 and the film are placed. Sheet FS is similarly received. On the other hand, the pocket 20 which has received the article to be packaged A0 and the film sheet FS at the entrance rotation angle position PIN is positioned at the first rotation angle position P1 from the entrance rotation angle position PIN. A pair of body flaps of the folded sheet UF are sequentially folded into the rear end face of the packaged product A0, and these body flaps are bonded to each other by heat sealing. Here, folding of the body flap and heat sealing are performed by a body sealing device 70, which is shown in FIG.

The trunk sealing device 70 includes an inner trunk flutterer 72 and an outer trunk flutterer 74 which are respectively disposed outside the outer periphery of the turret 2.
These inner and outer trunk flappers 72 and 74 traverse the pair of side frames 12 of the turret 2 and extend slightly longer than the maximum allowable width W of the package A0. FIG.
As is apparent from the above, when viewed in the rotation direction C of the turret 2,
The inner trunk flapper truck 72 is positioned behind the first rotation angle position P1, and the outer trunk flutter truck 74 is positioned forward of the first rotation angle position P1. The inner trunk flutterer 72 is attached to the lower end of a plate-shaped holder 76.
Numeral 6 is attached to the swing lever 78 so that the position can be adjusted. The swing lever 78 has a pivot shaft 8 at its upper end.
It is rotatably supported at 0 and can swing in the direction of arrow E in FIG. Accordingly, the swing motion of the swing lever 78 causes the inner trunk flutter truck 72 to move toward and away from the movement locus D described above. As a result, the packaged product A in which the inner trunk flutterer 72 is at the first rotation angle position P1.
0, the inner trunk flap wrapper 72 is moved toward one rear flap E of the trunk fold sheet UF.
F, that is, the trunk flap EF located on the fixed blade 22 side of the pocket 20 can be folded into the rear end face of the article to be packaged A0. The swing movement of the swing lever 78 is performed by a cam mechanism (not shown).

On the other hand, an outer trunk flutterer 74 is also attached to the lower surface of the holder 82, and this holder 8
2 has a built-in heater 84. The holder 82 is attached to one end of an angle member 86, and this one end is bent toward the turret 2. The angle member 86 is supported by a rolling type linear guide 90 via a slider 92, and the linear guide 90, that is, its guide rail 94 extends parallel to the tangent line of the turret 2 at the first rotation angle position P1. ing.

A cam follower 96 composed of a roller is rotatably attached to the other end of the angle member 86, and the cam follower 96 is fitted in a guide slot 100 formed at the tip of a driven lever 98. The driven lever 98 has a base end attached to one end of an inner shaft 102, and the inner shaft 102 is rotatably supported. An outer shaft 104 is disposed concentrically outside the inner shaft 102, and the outer shaft 104 is rotatably supported relative to the inner shaft 102. A support bracket 106 is attached to one end of the outer shaft 104 on the driven lever 98 side. The support bracket 106 extends upward beyond the driven lever 98, and its upper end 107 is folded back so as to cover the angle member 86 from above, and the guide rail 94 of the aforementioned linear motion guide 90 is attached to its lower surface. Have been.

The other end of the inner shaft 102 has a drive lever 10
The drive lever 108 is reciprocally rotatable in the direction of arrow F in FIG. 8 by a cam mechanism (not shown). A push screw 109 is screwed into the tip of the drive lever 108, and the tip of the push screw 109 is moved from the drive lever 108 to the driven lever 98 in FIG.
It protrudes to the side. On the other hand, a link lever 110 is attached to the other end of the outer shaft 104. The link lever 110 is a drive lever 108 and a driven lever 9 as shown in FIG.
6 is positioned. A pin 111 projects from the upper end of the link lever 110.
Is positioned on the movement locus of the tip of the push screw 109 when the drive lever 108 is reciprocated. Also, another pin 11 is provided at the tip of the link lever 110.
The pin 112 is fitted in a guide hole 114 of the connecting guide 113. The connecting guide 113 is connected to a rod of the air cylinder 115. Normally, the air cylinder 115 is in a contracted state, and the pin 112 of the link lever 110 is in the guide hole 1.
14 is located at one end. Furthermore, cooperation lever 1
A tension coil spring 1 is provided between the upper end of
The tension coil spring 116 urges the cooperation lever 110 to rotate counterclockwise as viewed in FIG.
In a state pressed against one end.

When the driving lever 108 is rotated clockwise as shown in FIG. 8, the driving lever 108 and the driven lever 98 are connected to each other via the inner shaft 102. It rotates clockwise together with the drive lever 108. Such rotation of the driven lever 98 pushes the angle member 86 through the cam follower 96, and the angle member 86 is moved while being guided by the linear guide 90. Accordingly, the outer trunk flutterer 74 attached to the angle member 86 via the holder 82 is moved in the direction indicated by the arrow G in FIG. 8, that is, toward the packaged product A0 at the first rotation angle position P1. As a result, the outer trunk flap truck 74 folds the other trunk flap EF of the trunk folding sheet UF. Here, as described above, one of the trunk flaps EF of the trunk folding sheet UF is folded by the inner trunk flapper packer 72, but the outer trunk flapper packer 74 is folded by the inner trunk flapper pack 7.
Immediately before coming into contact with 2, the inner trunk flap truck 72 starts to move back to its original position, whereby the other trunk flap EF is folded over one trunk flap EF.

When the outer trunk flap tractor 74 advances to a position immediately before the other trunk flap EF is completely folded, the drive lever 108 at this time is driven by its set screw 109.
Abuts against the pin 111 of the cooperation lever 110, whereby the drive lever 108 is moved by the tension coil spring 116.
The cooperation lever 110 is also opposed to the urging force of
10 is rotated clockwise as seen in FIG. At this time, the pin 112 of the link lever 110 is connected to the connecting guide 11.
3 is guided in the guide hole 114. Here, the cooperation lever 110 is connected to the support bracket 10 via the outer shaft 104.
6, the support bracket 106 is slightly rotated together with the cooperation lever 110. As a result, the outer trunk flapper truck 74 supported on the support bracket 106 side is indicated by an arrow I in FIG. And a pair of folded body flaps EF are sandwiched between the rear end face of the packaged product A0 and the rear end face of the packaged product A0.
Is heated, the pair of body flaps EF are heat-sealed to each other. Thereafter, when the drive lever 108 is rotated back toward the original position, the contact between the push screw 109 and the pin 111 is released, and as a result, the cooperation lever 110 receives the urging force of the tension coil spring 116 to return to the original position. , The outer trunk flapper truck 74 moves away from the packaged product A0 via the support bracket 106 and returns to the original position while being guided by the linear motion guide 90.

In an emergency stop or the like, when the air cylinder 115 is extended, the cooperation lever 110 is rotated counterclockwise through the connecting guide 113, and as a result, the outer trunk flapper car 74 is The packaged product A0 can be largely separated from the packaged product A0, and it is possible to prevent the packaged product A0 from being deformed by the heat of the heater 84.

As a result of the above-mentioned folding of the body flap EF and the heat sealing at the first rotation angle position P1, as shown in FIG. It will be covered. Therefore, a pair of side rings SR protruding from the left and right side surfaces of the article to be packaged A0 are formed on the body folded sheet UF, and these side rings SR have a rectangular shape.

Thereafter, when the turret 2 is further intermittently rotated by 60 °, the next pocket 2 is moved to the first rotation angle position P1.
0 is positioned together with the body fold sheet UF, and the body flap EF is positioned with respect to the body fold sheet UF.
And heat sealing are performed in the same manner. On the other hand, the pocket 20 located at the first rotation angle position P1 is positioned at a second rotation angle position P2 (a position 120 ° from the entrance rotation angle position PIN), and at this second rotation angle position P2, as shown in FIG. As a result, the pair of left and right side folded tuckers 120 advance along the corresponding side surface of the article to be packaged A0 from both ends thereof. As a result, each of the left and right side rings SR is folded in at both ends thereof, Simultaneously with the formation of the pair of side flaps SF, the one side flap SF, that is, the side flap SF located on the first rotation angle position P1 side is folded up. As is clear from FIG. 9, the side-turning-up tucker 120 is formed of a boot-shaped plate material whose lower surface is positioned in the same plane as the lower surface of the article to be packaged A0 at the second rotation angle position. That is, the lower part of the side-turning-up tucker 120 protrudes in a tapered shape toward the end of the side ring SR, and the tip is an arc surface.

The above-mentioned pair of left and right side folding tuckers 120 is driven by a similar side flap folding device. Hereinafter, referring to FIG. 10, one side flap will be described. The folding device 124 will be described. The side flap folding device 124 includes a support plate 126, which is opposed to the side frame 12 on one side of the turret 2 in parallel at a distance outside the turret 2, and in the rotation direction of the turret 2. Second rotation angle position P viewed from C
It is positioned downstream from 2. The support structure of the support plate 126 will be described later.

Roller-type linear motion guides 128 and 130, that is, guide rails 132 and 134 are provided on the outer surface of the support plate 126, and these guide rails 132 and 134 are spaced apart in the radial direction of the turret 2. And extends parallel to the packaged product A0 at the second rotation angle position P2. Sliders 136, 13 of linear motion guides 128, 130
8, holders 140 and 142 are attached, respectively, and the pair of side folding tuckers 120 described above are attached to the holders 140 and 142, respectively. Specifically, the holders 140 and 142 extend in parallel to each other toward the second rotation angle position P2, and one end of the connection plate piece 144 is provided with a pair of connection screws 146 at the end on the second rotation angle position P2 side. Each is fixed through. As is clear from FIGS. 11 and 12, each connecting plate piece 144 has a corresponding side-side folded tucker 12.
0, and the other end is integrally connected to the side folding tucker 120. Therefore, the pair of side folding tuckers 120 is supported by the support plate 126 via the corresponding holder and the linear motion guide.

On the outer surface of the support plate 126, the holder 1
A swing lever 148 is disposed between the swing levers 148 and 142.
0 and rotatably supported by the support plate 126. A linear motion guide 128 is provided from one end of the swing lever 148.
The link rod 152 extends in parallel with the above, and the link rod 152 is connected to one holder 140. On the other hand, from the other end of the swing lever 148, the linear motion guide 1
A link rod 156 extends integrally in parallel with 30, and
The tip of the link rod 156 is connected to the other holder 142. A connector 154 is connected to the other end of the swing lever 148, and a piston rod 160 of an air cylinder 158 is connected to the connector 154. The air cylinder 158 is disposed on the outer surface of the support plate 126 and below the linear guide 128, and its piston rod 160 is connected to the linear guide 12.
8, 130 extend in parallel.

The above-described side flap folding mechanism 12
According to 4, when the packaged product A0 located at the first rotation angle position P1 is positioned at the second rotation angle position P2 due to the intermittent rotation of the turret 2, a pair of side-turning-up tuckers 1 is provided.
Reference numeral 20 denotes a rest position indicated by a solid line in FIG.
When viewed in the radial direction of the tucker 2, they are positioned outside the packaged product A 0 in the pocket 20 at the second rotation angle position P 2. From such a state, the air cylinder 158
When the piston rod 160 is contracted, this contraction causes the swing lever 148 to rotate via the connector 154.
That is, the swing lever 148 is rotated in the counterclockwise direction in FIG. Such rotation of the swing lever 148 is performed by the holder 14 via the link rods 152 and 156.
0 and 142 are attracted in a direction approaching each other, so that these holders 140 and 142
The pair of side flip-up tuckers 120 move from the rest position in a direction approaching each other as shown by a two-dot chain line in FIG. As a result, as shown in FIGS. 9, 11 and 12, one side ring SR of the body fold sheet UF is folded at both ends to form a pair of side flaps SF,
Then, the one side flap SF is folded up.

Thereafter, in the process of intermittent rotation of the turret 2, the piston rod 160 of the air cylinder 158 is extended, and the pair of side folding tuckers 120 moves the next packaged product A0 to the second rotation angle position P2. Before reaching, it can be returned to the rest position shown by the solid line in FIG. Therefore, for the next packaged product A0 located at the second rotation angle position P2, the one side flap SF is folded up in the same manner.

On the other hand, the article to be packaged A0 located at the second rotation angle position P2, together with the pocket 20, has the outlet rotation angle position PEX.
In this process, as shown in FIG. 9, the folding is performed on the other left and right side wraps SF. Here also, the other side flaps SF are each implemented by a similar folding mechanism 170, and the folding mechanism 170 on one side is also shown in FIGS.

The folding mechanism 170 moves the second rotation angle position P
2 and a tucker plate 172 extending from the outlet rotation angle position PEX to the exit rotation angle position PEX.
Has an upper edge extending directly below the pair of side folding tuckers 120 along the reciprocating path. The tucker plate 172 is divided into a movable tucker plate 174 and a fixed plate 176 located on the side of the second rotation angle position P2, and when the article to be packaged A0 is positioned at the second rotation angle position P2, the movable tucker Upper edge 1 of plate 174
Reference numeral 78 extends just below the side surface of the article to be packaged A0 along the side surface.

The lower edge of the movable tucker plate 174 and the upper edge of the fixed plate 176 are formed in a comb shape as shown by broken lines in FIG. They are engaged with each other from a direction perpendicular to the upper edge 178. As shown in FIG. 11, the movable tucker plate 174 is mutually connected to the above-mentioned support plate 126 via a connecting member 180,
With the movement of the support plate 126, the fixing plate 176
Can be moved to the side of the pocket 20 at the second rotation angle position P2 while maintaining the engagement with. here,
Since the support plate 126 also supports the pair of side folding tuckers 120 as described above, when the support plate 126 is moved, the pair of side folding tuckers 120 are also at the second rotation angle position P2. It will move to the side of the pocket 20.

The movable tucker plate 17 as described above
4, when the packaged product A0 moves from the second rotation angle position P2 toward the outlet rotation angle position PEX, the other side flap SF moves the movable tucker plate 174 as shown in FIG. Bent upwards at the upper edge,
This folding causes the side flap SF to be clamped between the inner surface of the movable tucker plate 174 and the side surface of the packaged product A0 and between the inner surface of the fixed plate 176 and the packaged product A0. Is the exit rotation angle position PEX
Is maintained even if

At this time, one of the side flaps SF in the folded state is also moved by the movable tucker plate 174.
And is guided along the inner surface of the fixed plate 176. When the packaged article A0 is positioned at the outlet rotation angle position PEX, the fixed blades 22 of the pocket 20 are in the same plane as the fixed blades 22 of the pocket 20 at the inlet rotation angle position PIN, that is, the above-described loading. It is positioned at the same level as Route 4.

The movement of the support plate 126 is performed by a support plate adjustment mechanism 200 shown in FIG. 13. The support plate adjustment mechanism 200 will be described below. As is clear from the above description, a pair of support plates 126 are provided on the left and right. However, these support plates 126 can be moved in conjunction with each other by the adjustment mechanism 200.

The outer surface of each support plate 126 has a bearing 20
The bearings 202 are each provided with a pair of support shafts 204. The support shafts 204 extend from a pair of left and right carry-out frames 206, respectively, and their base ends are fixed to the corresponding carry-out frames 206. Therefore, each support plate 1
26 is slidably supported on a support shaft 204 via a pair of bearings 202. In FIG. 13, the unloading frames 206 are partially cut away, but these unloading frames 206 are located at the outlet rotation angle position PEX of the turret 2.
And are erected in parallel with each other.

As shown in FIG. 14, a cross plate 208 extends horizontally between a pair of support plates 126, and the cross plate 208 connects the support plates 126 to each other. Therefore, the pair of support plates 126 can move in conjunction with each other. In the center of the cross plate 208, a through hole (not shown) is formed.
, A nut member 210 is fixed coaxially with the through hole. The thread portion of the feed screw 212 is inserted into the through hole and the nut member 210, and the thread portion is screwed to the nut member 210. A knob 214 is attached to one end of the feed screw 210, and an extension shaft 216 extends from the other end. The distal end of the extension shaft 216 penetrates the upper part of the bearing holder 218 and is rotatably supported by the bearing holder 218.

A guide rod 220 penetrates a lower portion of the bearing holder 218. The guide rod 220 extends horizontally, and both ends thereof are provided with guide sleeves 222.
Through the pair of carry-out frames 206. That is, both ends of the guide rod 220 are
2 are supported by the corresponding unloading frame 206.

Further, on the upper surface of the bearing holder 218, a lock lever 224 is provided.
4 rotates the set screw 226 in the bearing holder 218 (see FIG.
16 can be advanced and retreated. In other words, the rotation of the lock lever 224 causes the set screw 226 to be pressed against the extension shaft portion 216, thereby preventing the rotation of the feed screw 212. If the pressing is released, the feed screw 212 can be rotated. Become.

According to the support plate adjusting mechanism 200 described above, when the feed screw 212 is rotated via the knob 214 in a state where the lock by the lock lever 224 is released, the cross plate 208 is moved in the axial direction of the feed screw 212. As a result, the pair of support plates 126 move in conjunction with each other, and as a result, the support plates 1 are moved in accordance with the thickness of the packaged article A0 at the second rotation angle position P2.
26 can be adjusted. That is, the packaged product A
Regardless of the width at 0, the support plate 126
With the movement adjustment, the upper edge 178 of the movable tucker plate 174 and the lower surface of the pair of side folding flaps 120 are moved with respect to the side surface of the packaged article A0 at the second rotation angle position P2.
It can be positioned exactly along the lower edge below it. 10 and 13, the movable tacker plate 174 and the side folding flap 120 are shown in a state where the movable tacker plate 174 and the side folding flap 120 are moved most toward the fixed plate 176 side, that is, in a state adapted to the article to be packaged A0 having the maximum allowable thickness. ing.

Referring again to FIG. 13, the lower portion of the pair of left and right unloading frames 206
A guide rod 228 is horizontally disposed between the guide rods.
As in the case of 20, both ends are supported by left and right carry-out frames 206 via guide sleeves 230. Also,
From the left and right carry-out frames 206, connecting plates 231 extend toward the turret 2, respectively, and each connecting plate 231 is connected to the corresponding fixed plate 176. Accordingly, each fixing plate 176 is mounted on the carry-out frame 2.
06 is supported.

Further, three feed screw shafts 232 are disposed between the pair of left and right carry-out frames 206, and two of the feed screw shafts 232 are guide rods 220 and 228 as is clear from FIG. Is located near
The remaining one is located at the end of the carry-out frame 206 located on the opposite side of the turret 2. Screw portions 234 and 236 are formed at both ends of each feed screw shaft 232, respectively.
The other screw portion 236 has a left-hand thread. The left and right screw portions 234 and 236 of each feed screw shaft 232 are respectively connected to nut members 238 and 238 fixed to the corresponding unloading frame 206.
240 are respectively screwed with each other, and protrude outside the carry-out frame 206. Referring to FIG. 15, the lowermost feed screw shaft 232 among the three feed screw shafts 232 is shown. A sprocket 242 is attached to one end of each feed screw shaft 232, respectively.
A chain 244 is wound around these srockets 242.

Then, the feed screw shaft 232 shown in FIG.
A knob 246 is attached to one end of the sprocket 2 so that the feed screw shaft 232 can be rotated by the knob 246.
As a result of transmission to the other two feed screw shafts 232 via the chain 42 and the chain 244, the feed screw shafts 232 are also rotated in conjunction with each other. When the three feed screw shafts 232 are rotated in conjunction with each other in this manner, the pair of left and right unloading frames 206 is moved to the pair of upper and lower guide rods 22.
0, 228 while being guided and separated from each other (FIG. 1
5 is moved in the direction of arrow J). As a result, the interval between the carry-out frames 206 is adjusted.

Since a pair of left and right support plates 126 are respectively supported on the pair of left and right carry-out frames 206 via the support shaft 202 and the pair of bearings 202 as described above (see FIG. 14), the carry-out is performed. The adjustment of the interval between the frames 206 is based on the interval between the pair of left and right support plates 126, that is, the interval between the left and right movable tucker plates 174 respectively supported on the left and right support plates 126, and the right and left. This means that the distance between the pair of side folding tuckers 120 and the distance between the left and right fixed plates 176 supported by the carry-out frame 206 are adjusted. As a result, these intervals can be adjusted in accordance with the width W of the packaged product A0, and even when the width of the packaged product A0 is different, the left and right tucker plates 172 are provided with respect to the packaged product A0.
(Movable tucker plate 174 and fixed plate 17
6) and a pair of left and right side folded tuckers 12
0 can be positioned at an appropriate position.

In the left and right carry-out frames 206, the above-described carry-out path 12 is formed to guide the packaged articles A0 discharged from the turret 2.
Numeral 2 extends horizontally from the vicinity of the outlet rotation angle position PEX of the turret 2. Unloading route 1 as shown in FIG.
Reference numeral 2 denotes a pair of left and right upper discharge guides 250 and a pair of left and right lower discharge guides 252. The pair of upper discharge guides 250 is a plate member whose lower surface is formed as a guide surface. Each upper carrying-out guide 250 is supported by a corresponding carrying-out frame 206 via a bracket 254, and the lower surface of the upper carrying-out guide 250,
That is, the guide surface is positioned at the same level as the fixed blade 22 of the pocket 20 at the outlet rotation angle position PEX.

On the other hand, as is clear from FIG. 15, the left and right lower discharge guides 252 are formed of angle members, and the upper surfaces thereof are formed as guide surfaces. Each lower unloading guide 2
The guide surface 52 is located in the same horizontal plane, and is opposed to the guide surface of the upper unloading guide 250 on the corresponding side downward and separated. The outer side edges and side surfaces of the left and right upper and lower carry-out guides 250 and 252 are in the same vertical plane, and the interval between these vertical planes is set to the width of the packaged article A0.

An elevating plate 256 is disposed between each lower transport guide 252 and the corresponding unloading frame 206, and one end of each elevating plate 256 has a central lower end of the corresponding lower transport guide 252. It is connected to. These elevating plates 256 are once bent downward and then extend horizontally toward the turret 2.

Guide rods 258 extend downward from both ends of each lifting plate 256, and these guide rods 258 slidably pass through the lifting guide 260. These lifting guides 260 are fixed to the carry-out frame 206. A nut member 262 is fixed to the lower surface of the central portion of each lifting plate 256, and these nut members 262 are not rotatable with respect to the inner surface of the corresponding unloading frame 206, but are slidable in the vertical direction. Is engaged. A feed screw shaft 264 is screwed into each nut member 262, and these feed screw shafts 2
64 extends vertically, and the upper end thereof is
6. As shown in FIG. 16, a screw gear 266 is attached to the lower end of each feed screw shaft 264, and these screw gears 266 are connected to the gear shaft 268.
Respectively meshed with the screw gear 270 attached to. The gear shaft 268 extends horizontally between the pair of left and right unloading frames 206, and both ends thereof are rotatably penetrated and supported by the corresponding unloading frame 206. A knob 272 is attached to one end of the gear shaft 268, and the gear shaft 268 can be rotated via the knob 272. When the gear shaft 268 is rotated in this manner,
As a result of the left and right feed screw shafts 264 being rotated through the meshing of the screw gears 266 and 270, the left and right lifting plates 2
56 moves up and down in conjunction with each other, so that the height levels of the left and right lower transport guides 252, that is, their guide surfaces can be adjusted. Therefore, the upper carry-out guide 250 and the lower carry-out guide 25 depend on the thickness of the article to be packaged A0.
2 can be adjusted. That is, when the packaged product A0 is positioned at the outlet rotation angle position PEX,
The guide surfaces of the pair of left and right lower discharge guides 252 can be positioned at the same level with respect to the lower surface.

Further, in the pair of left and right discharge frames 206, a discharge device 274 for discharging the packaged product A0 at the outlet rotation angle position PEX from the pocket 20 to the discharge path 12 described above is arranged. The details of the unloading device 274 are shown in FIG. The unloading device 274 includes a base 276 disposed between the pair of left and right unloading frames 206, and the base 276 extends below the unloading path 12 along the unloading path 12. The guide rod 228, the feed screw shaft 232, and the gear shaft 268 located at the lower portion of the unloading frame 206 extend through the base 276, and in FIG. It is shown.

A guide rail 278 is provided on the upper surface of the base 276.
The guide rail 278 is provided with a pair of front and rear sliders 280 spaced apart along the carry-out path 12, and the carriage 282 is disposed on the sliders 280. A drive plate 284 is mounted on one side edge of the carriage 282 between the sliders 280. The drive plate 284 is mounted on the base 27.
6 extends downward. A swing lever 286 is arranged below the base 276, and the swing lever 286 extends in the up-down direction, and has a lower end rotatably supported. Upper end of swing lever 286 and drive plate 2
The lower end of 84 is interconnected via a link rod 288. A drive disk 290 is vertically arranged near the swing lever 286, and can be rotated at a constant speed in a counterclockwise direction as viewed in FIG. 17 by a drive source (not shown) by a drive source (not shown). Drive disk 2
One end of a crank lever 292 is connected to the outer peripheral portion of the lever 90, and the other end is connected to an intermediate portion of the swing lever 286.

The drive disk 290 is moved from the state shown in FIG.
Is rotated one turn in the counterclockwise direction, the crank lever 292
Oscillating lever 286 reciprocates through this, and with this reciprocating rotation, carriage 282 reciprocates with a predetermined stroke via link rod 288 and drive plate 284. A pair of left and right discharge hands 294 is provided at the end of the carriage 282 located on the turret 2 side, and these discharge hands 294 are formed of plates and extend into the turret 2. More specifically, the pair of left and right discharge hands 294 extend within the gap 296 (see FIG. 5) between the side edges of the fixed blade 22 and the movable blade 24 and the corresponding side frame 12 in the turret 2. I have.
Therefore, the discharge hand 294 does not hinder the rotation of the turret 2. The tip of each discharge hand 294 is bent upward to form a discharge claw 298. In FIG. 17, when the ejecting claws 298 are located at positions indicated by solid lines, they are positioned more deeply than the pair of movable claws 30 of the pocket 20 at the outlet rotation angle position PEX. The pocket 20 is positioned immediately below the fixed blade 22.

An elevator 300 is arranged horizontally above the carriage 282.
Are attached to a pair of front and rear guide rods 302 so as to be able to move up and down. These guide rods 302 are the carriage 2
82 are erected on the upper surface, respectively. A bracket 304 is fixed to the lower surface of the elevating table 300, and a guide slot 306 is formed in the bracket 304 so as to be horizontal. On the other hand, a rotary cylinder 308 is arranged on the carriage 282, and a base end of a rotary lever 310 is attached to an output shaft of the rotary cylinder 308. The pivot lever 310 extends upward, and a pin 312 attached to the tip thereof is slidably fitted in the guide slot 306 of the bracket 304. In the state shown in FIG. 17, the rotating lever 310 is upright, and is in a state in which the elevator 300 is pushed up via the bracket 304.

A pair of front and rear discharge claws 314 are provided on the upper surface of the lifting table 300, and the discharge claws 314 and the above-described discharge claws 298 are positioned at the same interval. Here, these intervals are set to be larger than the allowable maximum length of the article to be packaged A0. As shown in FIG. 15, the carry-out 314 is located between the left and right upper and lower carry-out guides 250 and 252, and in the state shown in FIG. 17, the upper end of the carry-out claw 314 is the upper end of the discharge claw 298. And are positioned at the same level.

According to the above-described carrying-out device 274, when the carriage 282 is moved to the left as viewed in FIG. 17, the pair of left and right discharge claws 298 and the front and rear carrying-out claws 3 are caused by this forward movement.
14 is also moved to the left. Therefore, the pair of left and right discharge claws 298 abut against the end face on the back side of the packaged product A0 at the outlet rotation angle position PEX, and can push the packaged product A0 toward the carry-out path 12, whereby Packaged goods A0
Are the upper and lower unloading guides 250, 2 of the unloading path 12.
52, the first unloading position P on the unloading route 12
Move to s1. In the left and right lower unloading guides 252, slits (not shown) are formed at their ends on the turret 2 side over a predetermined length from their tips, and the discharge hand 294 enters into these slits. Then, the discharge hand 294 and the lower unloading guide 252
The interference with is prevented.

When the carriage 282 moves back, the pair of ejection claws 298 return to the original position shown by the solid line in FIG. 17, but at this time, the rotary cylinder 308 described above moves the rotating lever 310 from FIG. Turn 90 ° clockwise. Since the rotation of the rotation lever 310 pushes the bracket 304 downward through the pin 312, the lift 300 is lowered to a predetermined position, and the pair of carrying-out claws 314 of the lift 300 have upper ends thereof. It is positioned below the carry-out path 12, that is, the guide surface of the lower carry-out guide 252. Therefore, the unloading claw 314 of the lifting platform 300 can move back together with the carriage 282 without interfering with the unpacked product A0 discharged onto the unloading path 12, and the unpacked product A0 is moved to its first unloading position. PS1
Will stay.

As described later, the outlet rotation angle position PEX
From the pocket 20 on the carry-out path 12
Is discharged, in the discharging process, the one side flap SF in the folded state of the body folded sheet UF
Is folded back, and the packaged article A0 is moved to the first unloading position PS.
At 1, the one side flap SF is folded so as to overlap with the other side flap SF, and at the same time, they are heat-sealed, so that the packaged product A0
Is a package A1 completely packaged with a film sheet FS
Becomes

Thereafter, when the next article to be packaged A0 is positioned at the outlet rotation angle position PEX, the pair of discharge claws 298 and the pair of carry-out claws 314 reciprocate in the same manner. The package A1 at the unloading position Ps1 is pushed out by one of the unloading claws 314, moves to the next second unloading position PS2, and is discharged from the outlet rotation angle position PEX to the empty first unloading position PS1. The article to be packaged A0 is positioned.

By sequentially repeating the above operation,
The articles A0 to be packaged are sequentially discharged from the turret 2 onto the carry-out path 12, and the packages A1 on the carry-out path 12 are intermittently conveyed. In the above-described carrying-out path 12,
The left and right upper carry-out guides 250 are each provided with a return piece 316 made of a plate at an end located on the turret 2 side (see FIGS. 13 and 15), and the lower surfaces of these return pieces 316 are upper carry-out pieces. It is positioned at the lower surface of the guide 250, that is, at the same level as the guide surface. As specifically shown in FIG. 9, the folded-back piece 316 is obtained by vertically folding one corner of the rectangular plate, and the folded portion 3 having a triangular shape is obtained.
When the packaged product A0 is positioned at the outlet rotation angle position PEX, the reference numeral 18 faces the edge of the one side flap SF in the folded state of the body-folded sheet UF. The facing surface is formed as a curved surface.

The return piece 316 described above is connected to the transport path 12
Exit rotation angle position PEX
When the to-be-packaged product A0 is discharged toward the carry-out path 12, the side flap SF in the folded state of the body-folded sheet UF is guided by the folded portion 318 of the folded piece 316 on the corresponding side, and is substantially horizontal. Will be folded back. Here, since the left and right return pieces 316 are attached to the upper carry-out guide 250 supported by the carry-out frame 206, the interval between the return pieces 316 also adjusts the space between the left and right carry-out frames 206. Accordingly, it is adjusted according to the width of the article to be packaged A0.

A pair of left and right primary heat sealing devices are disposed on both sides of the first unloading position PS1, respectively, and the primary heat sealing device 320 on one side is shown in FIG.
It is shown. This primary heat sealing device 320
A pair of upper and lower brackets 322 projecting from the outer surface of the carry-out frame 206 is provided, and a guide rod 324 extends between these brackets 322. The upper end and the other end of the guide rod 324 are supported by upper and lower brackets 324, respectively.

A pair of upper and lower lifting members 326 and 328 are attached to the guide rod 324 so as to be vertically movable, respectively, and these lifting members 326 and 328 are connected to each other via a pair of links 330. Therefore, the pair of elevating members 326 and 328 can move up and down in conjunction with each other. On the other hand, on the outer surface of the carry-out frame 206, the air cylinder 33 is located below the lower bracket 322.
The piston rod 334 of the air cylinder 332 is connected to a lower elevating member 328. Therefore, the pair of elevating members 326 and 328 are in a state of being supported by the air cylinder 332.

As is apparent from FIG. 18, the lifting member 32
6, 328 extend toward the carry-out path 12 through an opening formed in the carry-out frame 206. Upper lifting member 3
A folding tucker 338 having a built-in heater 336 is attached to the distal end of the lower elevating member 328.
The guide 340 is attached to the tip of the. In the state shown in the figure, the guide 340 guides the side surface of the packaged product A0 at the first unloading position Ps1, and the guide 340 is provided.
The folding tucker 340 is positioned immediately above the. The guide 340 and the folding tucker 340 extend along the carry-out path 12.

When the piston rod 334 of the air cylinder 332 is contracted from the state shown in FIG.
The folding tucker 338 and the guide 340 are lowered in conjunction with each other via 6, 328. Therefore, the folding tucker 338 folds the packaged product A0 at the first unloading position Ps1 such that one of the side flaps SF that has already been folded back is overlapped with the other side flap SF, and the heater is provided. As a result of energizing 336, the side flaps SF are heat-sealed, and at this point, the article to be packaged A0 is completely wrapped. Here, when folding by the folding tucker 338, the guide 34
Since 0 descends while maintaining the folded state of the other side flap SF, the one side flap SF is reliably overlapped on the other side flap SF by the folding. Thereafter, the folding tucker 338 and the guide 340 rise to their original positions and wait.

Further, a pair of left and right secondary heat sealing devices are disposed on both sides of the above-mentioned second discharge position Ps2, respectively.
50 is shown. This secondary heat sealing device 350
Has a bracket 352 projecting from the outer surface of the carry-out frame 206, and an arm plate 354 is disposed above the bracket 352. The arm plate 354 is connected to the bracket 352 via a pair of links 356 and 358. One end of the link 356 is attached to the shaft 360. The shaft 360 rotatably penetrates the bracket 352 and protrudes from the bracket 352. On the other hand, the lower end of the air cylinder 362 is rotatably supported by the bracket 352, and the distal end of the piston rod 364 is connected to the protruding end of the shaft 360 via a drive lever 366.

As is clear from FIG. 19, the arm plate 354 is connected to the carry-out path 1 through the opening of the carry-out frame 206.
A heat sealer 370 having a built-in heater 368 is attached to the end thereof. FIG.
When the piston rod 364 of the air cylinder 362 is extended from the state shown in FIG.
As a result, one link 356 rotates,
As a result, the heat sealer 370 moves to the second unloading position PS2.
, Is pressed against the side flap SF of the packaged product A1 and the secondary heat sealing is performed on the side flap SF. Thereafter, the heat sealer 370 returns to the original position and waits.

Even in the above-described primary heat seal device 320 and secondary heat seal device 350, the folding tucker 338, the guide 340, and the heat sealer 370 are supported on the carry-out frame 206 side.
By adjusting the interval between the left and right carry-out frames 206, their positions can be accurately positioned according to the width of the article to be packaged A0.

The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the various members and parts are not limited to the illustrated shapes and configurations, and the specific shapes and configurations can be changed as long as the operation of the present invention can be performed.

[0080]

As described above, according to the turret type wrapping machine of the first aspect, it is only necessary to adjust each part without changing parts even for articles to be packaged of various sizes. , And can be packaged, resulting in excellent versatility. According to the overwrapping machine of claim 2, since the adjustment of each part is performed at that time, the adjustment can be performed quickly and easily, and it is possible to easily respond to the switching of the article to be packaged.

According to the wrapping machine of the third aspect, regardless of the thickness of the article to be wrapped, the article to be wrapped starts to move from the second rotation angle position to the exit rotation angle position, and at the same time, the side flaps Can be started, and the folding can be performed stably. According to the packaging method of the fourth aspect, it is possible to easily obtain a turret type wrapping machine which can be easily applied to articles to be packaged of various sizes.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a turret type wrapping machine.

FIG. 2 is a schematic diagram showing the flow of an article to be packaged and a film sheet in the overwrapping machine.

FIG. 3 is a perspective view showing a packaged product.

FIG. 4 is a side view of the turret partially shown by a two-dot chain line.

FIG. 5 is a cross-sectional view of the turret.

FIG. 6 is a rear view showing a movable claw of a pocket.

FIG. 7 is a longitudinal sectional view showing a part of a turret.

FIG. 8 is a side view showing a trunk sealing device.

FIG. 9 is a perspective view showing a folding procedure of a body folding seal.

FIG. 10 is a side view showing the side flap folding device.

FIG. 11 is a rear view of the apparatus of FIG. 10;

FIG. 12 is a plan view of the apparatus of FIG. 10;

FIG. 13 is a view showing a carry-out side adjacent to the turret.

FIG. 14 is a plan view showing a support plate adjusting mechanism.

FIG. 15 is a longitudinal sectional view between a pair of left and right carry-out frames.

FIG. 16 is a view showing a level adjusting mechanism of the lower unloading guide.

FIG. 17 is a schematic side view showing the unloading device.

FIG. 18 is a diagram showing a primary heat sealing device.

FIG. 19 is a view showing a secondary heat sealing device.

[Explanation of symbols]

2 Turret 20 Pocket 32 Screw Shaft (First Adjusting Means) 46 Screw Shaft (First Adjusting Means) 70 Body Sealing Device (Body Sealing Means) 124 Side Flap Folding Device 172 Tucker Plate (Side Flap Folding Means) 212 Feed Screw ( Fourth adjusting means) 232 Feed screw shaft (second adjusting means) 264 Feed screw shaft (third adjusting means) 316 Folding piece (side flap returning means) 320 Primary heat sealing device

Claims (4)

[Claims] 1. A rotatable turret, provided at equal intervals in the circumferential direction on the turret, and a box-like shape together with the packaging sheet when the turret is positioned at a predetermined entrance rotation angle position with the rotation of the turret. And a plurality of pockets formed in a body-folded sheet formed by folding a packaging sheet in a U-shape along the outer surface of the article to be packaged, and the pocket is rotated at the entrance with the rotation of the turret. When positioned from the angular position to the first rotational angle position,
A pair of trunk flaps of the trunk folding sheet are sequentially folded,
A body sealing means for overlapping and adhering to each other;
When positioned from the rotation angle position to the second rotation angle position,
Fold both ends of each of the left and right sides of the body-folded sheet to form a pair of side flaps on each side and, among the pair of side flaps, remove one of the side flaps located on the first rotation angle position side. A side flap folding means for folding, and the second pocket is formed by the rotation of the turret.
Side flap folding means for folding the other side flap of the pair of side flaps when moving from the rotation angle position to the exit rotation angle position, and wrapping the body folded sheet from within the pocket positioned at the exit rotation angle position. In the process of discharging the placed semi-packaged product on a predetermined carry-out path extending outside the turret,
A side flap reversing means for reversing the one side flap, and when the semi-packaged product is positioned at a predetermined position on the carry-out path, the one side flap is folded over the other side flap and overlapped with each other. Side-sealing means for adhering to each other, first adjusting means for adjusting the depth and inner dimension of each of the pockets corresponding to the length and thickness of the article to be packaged, respectively, the side-flap folding means, and the side-flap folding Means, a second adjusting means for adjusting each operation position where the side flap folding back means and the side sealing means perform the operation on the body folded sheet according to the width of the article to be packaged, and the outlet rotation angle. A third adjusting means for adjusting a level position of the carry-out path with respect to a position according to a thickness of the packaged article. Turret type wrapping machine characterized by the following. 2. The apparatus according to claim 1, wherein said second adjusting means is capable of simultaneously adjusting said operating positions in conjunction with each other.
2. The turret type wrapping machine according to 1. 3. The apparatus according to claim 2, further comprising: fourth adjusting means for adjusting the operation position of the side flap folding means with respect to the second rotation angle position in accordance with the thickness of the article to be packaged. 3. The turret type wrapping machine according to 1 or 2. 4. When the pocket of the turret is at the entrance rotation angle position, an article to be packaged is inserted into the pocket together with a packaging sheet, and the packaging sheet is folded in a U-shape along the outer surface of the article to be packaged. Forming the folded body-folded sheet, and when the pocket is positioned at the first rotation angle position with the rotation of the turret, the pair of body flaps of the body-folded sheet are sequentially folded and overlapped and adhered to each other And the rotation of the turret causes the pocket to move to the first position.
When positioned from the rotation angle position to the second rotation angle position,
The left and right sides of the body-folded sheet are folded at both ends to form a pair of side flaps on each side, and one of the pair of side flaps located on the first rotation angle position side Folding up the side flaps, and, when the pocket moves from the second rotation angle position to the exit rotation angle position with the rotation of the turret, the other side flap of the pair of side flaps Folding, and in the process of discharging the semi-packaged product from the pocket at the outlet rotation angle position, folding back the one side flap in the body folded sheet; folding the one side flap and the other Superposing on side flaps and bonding to each other with a turret type wrapping machine