JP3729568B2 - Turret type overwrapping machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  This invention relates to a turret-type overwrap for packaging a box-shaped packaged product.In machineRelated.
[0002]
[Related background]
The upper wrapping machine is a machine for wrapping a box-shaped article to be wrapped with a wrapping sheet such as paper or film, and there is a machine using an intermittently rotating turret. According to this type of turret-type overwrapping machine, an article to be packaged is received together with a packaging sheet in one pocket of the turret. At this time, the packaging sheet is a U-shaped body that is first folded along the outer surface of the article to be packaged. It is formed on a body folded sheet. After that, in the process in which the packaged product is sequentially moved along with the pocket along with the intermittent rotation of the turret, the pair of cylinder flaps of the cylinder-folded sheet are sequentially folded and bonded to each other. Except for the side, it is in a state of being wrapped by a body-folded sheet. Then, in the process in which the semi-packaged product is discharged from the turret pocket, the left and right sides of the body-folded sheet are folded and sealed, thereby completing the packaging of the packaged product.
[0003]
[Problems to be solved by the invention]
In the turret-type overwrapping machine described above, each pocket of the turret must be set to a size suitable for the packaged product in order to accurately fold the packaging sheet. If the package size is different, it is necessary to replace the components that form each pocket of the turret.
[0004]
  In addition, the width and thickness of the packaged product also on the side of the body folded sheetOnlySince the side folds are made by a suitable folding part, if the size of the packaged item is different, it is necessary to change not only the size of the folding part but also the mounting position.
  The replacement of the above-described pocket components and folding parts requires not only preparation of the component parts and folding parts in advance for each article to be packaged, but also a great deal of replacement and assembly. It is time consuming and it is practically difficult to apply the turret-type overwrapping machine to various sizes of packages.
[0005]
  The present invention has been made on the basis of the above-described circumstances, and the object of the present invention is that it can be easily applied to a packaged article having various sizes, and has excellent versatility.MachineIt is to provide.
[0006]
[Means for Solving the Problems]
The above object is achieved by the present invention, and the turret-type overwrapping machine according to claim 1 is provided in the turret and wraps the packaging sheet when receiving the box-shaped packaged article together with the packaging sheet at each position of the inlet rotation. A plurality of pockets formed on a body-folded sheet folded along the outer surface of the product, and a pair of body flaps of the body-folded sheet are sequentially folded when each pocket is positioned from the entrance rotation angle position to the first rotation angle position. When the cylinder seal means and the pocket are positioned from the first rotation angle position to the second rotation angle position, the both ends of the cylinder folded sheet are folded to the left and right sides of the cylinder folded sheet to each side. A pair of side flaps are respectively formed, and one of the pair of side flaps and the side flap located on the first rotation angle position side is folded up. The flap folding means, the side flap folding means for folding the other side flap of the pair of side flaps when the pocket moves from the second rotation angle position toward the exit rotation angle position, and the exit rotation angle position. A side flap folding means for folding one side flap in the process in which the half-wrapped product wrapped in the body folded sheet from the inside of the pocket is discharged onto a predetermined carry-out path extending outside the turret, and on the carry-out path When the semi-wrapped product is positioned at the predetermined position, side seal means is provided for folding one side flap onto the other side flap and overlapping and adhering to each other.
[0007]
The turret-type overwrapping machine according to claim 1 includes first adjusting means for adjusting the depth and inner method of each pocket corresponding to the length and thickness of the packaged product, side flap folding means, and side flaps. A second adjusting means for adjusting each operating position of the folding means, the side flap folding means and the side seal means with respect to the body folded sheet according to the width of the packaged product, and the level position of the carry-out path with respect to the outlet rotation angle position. And third adjusting means for adjusting according to the thickness of the packaged product.
[0008]
According to the turret-type overwrapping machine of claim 1, the first adjusting means adjusts the size of each pocket according to the size of the packaged item, specifically the width and length thereof, According to the width of the article to be packaged, the operation positions of the folding, folding, folding and side seals described above with respect to the side of the body folded sheet are adjusted by the two adjusting means. And the level position of the carrying-out path | route with respect to the exit rotation angle position of a turret is adjusted with a 3rd adjustment means according to the thickness of a to-be-packaged item.
[0009]
As a result of the adjustment by the first to third adjustment means, it is possible to fold the packaging sheet, torso seals, to fold up, to fold back and to side seals of various sizes of packages. Become.
In the turret-type upper wrapper of claim 2, the second adjusting means can adjust the operating positions simultaneously in conjunction with each other, and these adjustments are easily and quickly performed.
[0010]
The turret-type upper wrapper of claim 3 further includes fourth adjusting means for adjusting the operating position of the side flap folding means with respect to the second rotational angle position in accordance with the thickness of the packaged item. By the adjustment by the four adjusting means, the pocket starts to move from the second rotation angle position toward the outlet rotation angle position, and at the same time, folding of one side flap by the side flap folding means is started immediately.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  Referring to FIG. 1 and FIG. 2, the overall structure of the turret-type overwrapping machine and the flow of articles to be packaged and the packaging film therein are schematically shown. Here, the packaged product is a thin disc case containing a compact disc.
  The overwrapping machine is a packaged product A that extends horizontally toward the turret 20The carry-in route 4 is provided with an automatic supply unit 6 and a card supply unit 8 sequentially from the upstream side. Although not shown in detail in FIG. 1 and FIG. 2, the automatic supply unit 6 can continuously convey the articles to be packaged A0 on the carry-in path 4 at a constant interval. The card supply unit 8 supplies the cards B one by one toward each packaged product A0 on the carry-in route 4, and the supplied card B is transferred to the packaged product A0 along with the transport of the packaged product A0. It is folded at the front edge and is put on the front edge.
[0014]
A film sheet (packaging sheet) FS is sequentially supplied between the end of the carry-in path 4 and the turret 2, and these film sheets FS predetermine the packaging film RF fed out from the film roll FR. It is obtained by cutting every length. A tear tape bobbin TB is arranged in the middle of the delivery path of the packaging film RF from the film roll FR, and the tear tape TT delivered from the tear tape bobbin TB is placed on one side edge of the packaging film RF. It is pasted. Therefore, the film sheet FS obtained from the packaging film RF is a packaging sheet having a tear tape piece Tp (see FIG. 3).
[0015]
The article to be packaged 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, the pocket at the entrance rotation angle position. Along with this insertion, the film sheet FS is folded into a U shape along the outer surface of the packaged product A0, whereby the film sheet FS is formed into a cylinder-folded sheet that wraps the packaged product A0 so as to sandwich the packaged product A0 from above and below. Here, both ends of the body folded sheet UF protrude from the rear end edge of the packaged product A0, and the pair of left and right side edges project from the side surface of the packaged product A0.
[0016]
Thereafter, when the turret 2 is rotated about the rotation shaft 10 and the pocket is 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 above described body folding is performed. The body flap is folded and heat-sealed, and the side flaps are folded on the sheet UF. Then, when the article to be packaged A0 is discharged from the pocket at the exit rotation angle position to a predetermined position on the carry-out path 12, the side flaps are finally folded in the folded sheet UF and the primary heat at that position. As a result of the sealing, the packaged product A0 becomes the packaged product A1 completely packaged by the body-folded sheet UF, that is, the film sheet FS. After this, the packaged product A1 is subjected to secondary heat sealing on its side flaps, and is conveyed toward the next step. The folding and heat sealing of the body flap and the side flap in the above-described body folded sheet UF will be described later.
[0017]
As apparent from FIG. 3, since the package A1 is provided with the tear tape piece Tp, the film sheet FS is easily torn along the tear tape piece Tp if the tear tape piece Tp is pulled by pulling the tip. be able to. In FIG. 3, the body flap and the side flap of the film sheet FS (body-folded sheet UF) are indicated by reference numerals EF and SF, respectively. The length, width, and height (thickness) based on the conveyance direction of the packaged product A0 are indicated by L, W, and H, respectively.
[0018]
  Next, referring to FIGS. 4 and 5, the turret 2 is specifically shown. The rotating shaft 10 of the turret 2 extends horizontally and is connected to a drive source (not shown), and the turret 2 can be intermittently rotated counterclockwise (arrow C) as viewed in FIG. The turret 2 is a pair of left and right side frames 13With these side frames 13Are spaced apart from each other at a predetermined interval in the axial direction of the rotary shaft 10. Each side frame 13Is attached to the attachment hub 14 so as to sandwich the attachment hub 14, and this attachment hub 14 is fixed to a sleeve 16 that rotates integrally with the rotary shaft 10. As is apparent from FIG. 4, each side frame 13Each has six frame blades 18, and these frame blades 18 extend radially at equal intervals in the direction of rotation of the turret 2. One side frame 13Each frame wing 18 and the other side frame 13The front edge of each frame blade 18 positioned on the front side in the rotation direction of the turret 2 is positioned on a radiation surface passing through the rotation axis of the turret 2. It has been.
[0019]
  A pair of side frames 13Six pockets 20 are formed therebetween, 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 the fixed blade 22 and the movable blade 24. The base of the fixed blade 22 is fixed to the mounting hub 14, and extends along the front side edges of the pair of frame blades 18 facing each other. Yes. Specifically, the inner surface of the fixed blade 22 facing the pocket 20 and the front edge of the pair of frame blades 18 are positioned in the same plane.
[0020]
  Fixed featherRoot 2A U-shaped bracket 26 is disposed along the outer surface of the outer surface 2. The bracket 26 is located on 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 with a screw. . Specifically, the open end of the bracket 26 is connected in a state of being sandwiched between the mounting hub 14 and the base portion of the fixed blade 22.
[0021]
  The bracket 26 is provided with a slider 28, and the slider 28 is supported by the bracket 26 so that it cannot rotate and is slidable in the longitudinal direction of the fixed blade 22. As is apparent from FIG. 6, a pair of left and right movable claws 30 are provided at both ends of the slider 28, and these movable claws 30 are pockets through rectangular notches 31 (see FIG. 5) formed on both side edges of the fixed blade 22. 20It is projected inside. A screw shaft 32 is rotatably passed through the closed end of the bracket 26, the tip end portion of the screw shaft 32 extends toward the slider 28, and the screw portion at the tip end portion 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 3.2This screw shaft 32And can rotate together. Therefore, if the screw shaft 32 is rotated through the knob 34, the slider 28, that is, the pair of movable claws 30, can be moved in the longitudinal direction of the fixed blade 22 within the notch 31 described above. 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.
[0022]
  An extension bracket portion 36 is integrally formed at the closed end of the bracket 26, and the extension bracket portion 36 once extends toward the pocket 20 adjacent in the circumferential direction of the turret 2, and then the adjacent pocket 20 is movable. It extends parallel to the blades 24. A blade holder 38 is disposed between the extension bracket portion 36 and the adjacent movable blade 24, and the blade holder 38 is formed of a stepped plate piece as is apparent from FIG. A guide hole 40 and a screw hole 42 are respectively formed at the tip of the blade holder 38 that rises toward the extension bracket portion 36, and the guide hole 40 and the screw hole 42 are orthogonal to the longitudinal direction of the adjacent pocket 20. It extends in the direction to do. A guide rod 44 extending from the extension bracket portion 36 is slidably passed through the guide hole 40, and the screw shaft 42 has a screw shaft 46.One endThe screw part formed in is screwed in. The screw shaft 46 passes through the extension bracket portion 36 in a rotatable manner, and this extension bracketPart36. A knob 48 is put on the other end of the screw shaft 46, and the knob 48 is connected to the screw shaft 46 and can rotate integrally with the screw shaft 46. Accordingly, the blade holder 38 is supported by the extension bracket portion 36 via the screw shaft 46.
[0023]
The movable blade 24 of the adjacent pocket 20 extends from the base of the blade holder 38 and is attached to the base with play. Specifically, a clamping plate 50 is provided at the base of the blade holder 38 so as to clamp the base of the movable blade 24. The clamping plate 50 is connected to the blade holder 38 via a pair of mounting screws 52. ing. A protrusion 54 protruding toward the blade holder 38 is integrally formed on the holding plate 50, while a slit 56 for penetrating the protrusion 54 is formed at the base of the movable blade 24. The protruding amount of the protrusion 54 is larger than the thickness of the movable blade 24, and accordingly, the movable blade 24 is allowed to have some shakiness. Further, a base portion of a leaf spring 58 is sandwiched between the base portion of the blade holder 38 and the protrusion 54, and the leaf spring 58 extends toward the tip portion of the movable blade 24, and the tip end is interposed via a set screw 60. And fixed to the movable blade 24. Accordingly, the leaf spring 58 presses and urges the tip of the movable blade 24 toward the pocket 20.
[0024]
  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, if the screw shaft 46 is rotated via the knob 48, the blade holder 38 is guided and moved by the guide rod 44, so that the movable blade 24 of the pocket 20 contacts and separates from the fixed blade 22, Thus, 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 packaged product A 0 can be adjusted. In addition, since the notch 62 (refer FIG. 5) is formed in the both sides in the base of the movable blade | wing 24, even if the internal height of the pocket 20 is reduced, a pair of movable nail | claw 30 passes through the notch 62, Movable blade 24Passingcan do. In this case as well, 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.
[0025]
As described above, since the pocket 20 is formed between the fixed blade 22 and the movable blade 24, it is possible to wrap packages having various sizes only by adjusting the positions of the movable claws 30 and the movable blade 24, respectively. Depending on the product A0, the size can be varied.
Therefore, as shown in FIG. 4, when one pocket 20 of the turret 2 is positioned at the entrance rotation angle position PIN on the carry-in path 4 side described above, more specifically, the fixed blade 22 of the pocket 20 is carried in. When positioned in the same horizontal plane as the path 4, the pocket 20 can receive the packaged product A 0 delivered from the carry-in path 4 together with the film sheet FS described above. Here, the packaged product A0 is pushed into the pocket 20 until the front end surface of the packaged product A0 contacts the pair of movable claws 30, so that the rear end surface of the packaged product A0 is not limited to the total length L (see FIG. 3). It should be noted that it protrudes slightly from the tips of the fixed blade 22 and the movable blade 24. That is, if the article to be packaged A0 moves with the rotation of the turret 2, the rear end surface of the article to be packaged A0 is slightly curved as shown by the two-dot chain line in FIG. It moves along the movement locus D of the 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 between the pair of frame blades 18 located on both sides of the pocket 20, as shown in FIG. The left and right side surfaces protrude from the frame blade 18.
[0026]
Further, since the tip of the movable blade 24 is pressed and urged toward the pocket 20 as described above, the article A0 to be packaged is against the urging force from the movable blade 24 together with the film sheet FS in the pocket 20. It is pushed into. As a result, not only can the body fold of the film sheet FS utilizing the indentation of the packaged product A0, that is, the formation of the cylinder-folded sheet UF be performed reliably, but 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.
[0027]
4 and 7, the pockets 20 of the turret 2 are shown with different inner heights to indicate that the inner height can be adjusted.
When the turret 2 is intermittently rotated by 60 ° about the rotation axis 10, the next empty pocket 20 is positioned at the entrance rotation angle position PIN, and the packaged product A 0 and the film are placed in the empty pocket 20. Sheet FS is similarly accepted. On the other hand, the pocket 20 that has received the packaged article A0 and the film sheet FS at the entrance rotational angle position PIN is positioned from the entrance rotational angle position PIN to the first rotational angle position P1, and at this first rotational angle position P1, A pair of trunk flaps of the folded sheet UF are sequentially folded with respect to the rear end face of the article to be packaged A0, and these trunk flaps are bonded to each other by heat sealing. Here, the folding and heat sealing of the trunk flap is performed by the trunk sealing device 70, which is shown in FIG.
[0028]
  The trunk sealing device 70 includes an inner trunk flap tacker 72 and an outer trunk flap tacker 74 that are respectively arranged on the outer sides of the outer periphery of the turret 2.G2 pair of side frames 13And extends slightly longer than the maximum allowable width W of the packaged product A0. As is apparent from FIG. 8, the inner trunk flap tacker 72 is positioned rearward of the first rotational angle position P1 and the outer trunk flap tacker 74 is located at the first rotational angle position P1 when viewed in the rotational direction C of the turret 2. Positioned forward. The inner trunk flap tacker 72 is attached to the lower end of a plate-like holder 76, and this holder 76 is attached to the swing lever 78 so that the position can be adjusted. The swing lever 78 is rotatably supported on the rotation shaft 80 at its upper end, and can swing in the direction of arrow E in FIG. Therefore, the inner trunk flap tacker 72 moves toward and away from the movement trajectory D by the swinging motion of the swinging lever 78. As a result, when the inner trunk flap tacker 72 is moved toward the rear end face of the article A0 to be packaged at the first rotation angle position P1, the inner trunk flap tacker 72 is moved to one trunk flap EF, That is, it is possible to fold the trunk flap EF located on the fixed blade 22 side of the pocket 20 with respect to the rear end surface of the packaged product A0. The swing motion of the swing lever 78 is performed by a cam mechanism (not shown).
[0029]
On the other hand, the outer trunk flap tacker 74 is also attached to the lower surface of the holder 82, and a heater 84 is built in the holder 82. The holder 82 is attached to one end portion of the angle member 86, and this one end portion is bent toward the turret 2. The angle member 86 is supported by a rolling type linear motion guide 90 via a slider 92, and the linear motion guide 90, that is, its guide rail 94, extends parallel to the tangent line of the turret 2 at the first rotational angle position P1. ing.
[0030]
A cam follower 96 made 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 the driven lever 98. The driven lever 98 has a base end attached to one end of the inner shaft 102, and the inner shaft 102 is rotatably supported. An outer shaft 104 is disposed concentrically on the outer side of the inner shaft 102, and the outer shaft 104 is supported so as to be rotatable 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 linear guide 90 described above is attached to the lower surface thereof. It has been.
[0031]
  A drive lever 108 is attached to the other end of the inner shaft 102, and the drive lever 108 can reciprocate in the direction of arrow F in FIG. 8 by a cam mechanism (not shown). A push screw 109 is screwed into the distal end portion of the drive lever 108, and the push screw 109 projects from the drive lever 108 toward the driven lever 98 as viewed in FIG. On the other hand, a linkage lever 110 is attached to the other end of the outer shaft 104, and this linkage lever 110 is positioned between the drive lever 108 and the driven lever 96 as seen in FIG. A pin 111 protrudes from the upper end of the linkage lever 110, and this pin 111 is positioned on the movement locus of the tip of the push screw 109 when the drive lever 108 is reciprocally rotated. Further, another pin 112 protrudes from the distal end portion of the linkage lever 110, and this pin 112 is fitted in the guide hole 114 of the connecting guide 113. The connecting guide 113 is connected to the rod of the air cylinder 115. Usually, the air cylinder 115 is in a contracted state, and the pin 112 of the linkage lever 110 is positioned at one end of the guide hole 114. Further, a tension coil spring 116 is stretched between the upper end of the linkage lever 110 and the fixed member, and this tension coil spring 116 urges the linkage lever 110 to rotate counterclockwise as viewed in FIG. As a result, the pin 112 is pressed against one end of the guide hole 114.WasIs in a state.
[0032]
When the drive lever 108 described above is rotated clockwise as viewed in FIG. 8, the drive lever 108 and the driven lever 98 are connected to each other via the inner shaft 102. Therefore, the driven lever 98 is also connected to the drive lever 108. At the same time, it rotates clockwise. 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 motion guide 90. Accordingly, the outer trunk flap tacker 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 item A0 at the first rotation angle position P1. As a result, the outer trunk flap tacker 74 folds the other trunk flap EF of the trunk folded sheet UF. Here, as described above, one trunk flap EF of the trunk folded sheet UF is folded by the inner trunk flap tacker 72, but the inner trunk flap tacker immediately before the outer trunk flap tacker 72 contacts the inner trunk flap tucker 72. 72 begins to move back toward its original position, so that the other body flap EF is folded over the one body flap EF.
[0033]
  When the outer trunk flap tacker 74 is advanced to a position just before the other trunk flap EF is completely folded, at this time, the driving lever 108 is brought into contact with the pin 111 of the linkage lever 110 at the tip of the push screw 109, thereby driving the driving lever 108. The lever 108 resists the biasing force of the tension coil spring 116.ReamThe carrying lever 110 is rotated clockwise as viewed in FIG. At this time, the pin 112 of the linkage lever 110 is guided in the guide hole 114 of the connecting guide 113. Here, since the linkage lever 110 is connected to the support bracket 106 via the outer shaft 104, the support bracket 106 is slightly rotated together with the linkage lever 110, and as a result, is supported on the support bracket 106 side. The outer trunk flap tacker 74 is lowered as indicated by an arrow I in FIG. 8, and sandwiches a pair of trunk flaps EF folded between the rear end surfaces of the packaged product A0. Is heated, the pair of trunk flaps EF are heat-sealed with each other. Thereafter, when the drive lever 108 is rotated backward toward the original position, the contact between the push screw 109 and the pin 111 is released, so that the linkage lever 110 receives the urging force of the tension coil spring 116 and returns to the original position. Accordingly, the outer trunk flap tacker 74 is separated from the packaged product A0 via the support bracket 106 and returned to the original position while being guided by the linear motion guide 90.
[0034]
In an emergency stop or the like, as a result of the air cylinder 115 being extended, the linkage lever 110 is rotated counterclockwise via the connecting guide 113. It is possible to greatly deviate from A0, and it is possible to prevent the packaged product A0 from being deformed by the heat of the heater 84.
[0035]
As a result of the folding and heat sealing of the above-described trunk flap EF at the first rotation angle position P1, as shown in FIG. 9, the packaged product A0 is covered with the trunk-folded sheet UF except for its left and right sides. It becomes a state. Therefore, a pair of side rings SR projecting from the left and right side surfaces of the article to be packaged A0 are respectively formed on the body folded sheet UF, and these side rings SR have a rectangular shape.
[0036]
After that, when the turret 2 is further intermittently rotated by 60 °, the packaged product A0 in the next pocket 20 is positioned together with the body folded sheet UF at the first rotational angle position P1, and the body folded sheet UF is The folding of the trunk flap EF and the 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 the second rotation angle position P2 (position at 120 ° from the entrance rotation angle position PIN), and this second rotation angle position P2 is shown in FIG. As a result, the pair of left and right side folded tuckers 120 advances from both end sides along the corresponding side surface of the packaged product A0. As a result, each of the left and right side rings SR is accompanied by folding of both end portions, Simultaneously with the formation of the pair of side flaps SF, 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 folded tucker 120 is made of a boot-shaped plate material whose lower surface is positioned in the same plane as the lower surface of the packaged product A0 at the second rotation angle position. That is, the lower part of the side folded tucker 120 projects in a tapered manner toward the end of the side ring SR, and the tip thereof is an arc surface.
[0037]
  The pair of left and right side folding tuckers 120 described above are driven by a similar side flap folding device, and the side flap folding device on one side will be described below with reference to FIG. 124 will be described.
  The side flap folding device 124 is provided with a support plate 126, which is the side frame 1 on one side of the turret 2.3On the other hand, they are spaced apart from each other in parallel and positioned downstream of the second rotation angle position P2 in the rotation direction C of the turret 2. The support structure of the support plate 126 will be described later.
[0038]
  Rolling type linear motion guides 128 and 130, that is, guide rails 132 and 134 thereof are provided on the outer surface of the support plate 126. These guide rails 132 and 134 are spaced apart from each other in the radial direction of the turret 2 and It extends parallel to the packaged item A0 at the two rotation angle position P2. Holders 140 and 142 are attached to the sliders 136 and 138 of the linear motion guides 128 and 130, respectively, and the pair of side folded tuckers 120 described above are attached to the holders 140 and 142, respectively. Specifically, each holder 140, 142 is at the second rotational angle position P2.Packaged goods A 0And one end of the connecting plate piece 144 is fixed to the end portion on the second rotational angle position P2 side via a pair of connecting screws 146, respectively. As is apparent from FIGS. 11 and 12, each connecting plate piece 144 extends toward the corresponding side folded tucker 120, and the other end is integrally coupled to the side folded tucker 120. Accordingly, the pair of side folded tuckers 120 are supported by the support plate 126 via the corresponding holders and linear guides.
[0039]
A swing lever 148 is disposed on the outer surface of the support plate 126 so as to be positioned between the holders 140 and 142, and the center portion of the swing lever 148 can freely rotate to the support plate 126 via the rotation shaft 150. It is supported by. A link rod 152 extends from one end of the swing lever 148 in parallel with the linear motion guide 128, and the link rod 152 is connected to one holder 140. On the other hand, a link rod 156 extends integrally from the other end of the swing lever 148 in parallel with the linear guide 130, 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 the air cylinder 158 is connected to the connector 154. The air cylinder 158 is arranged on the outer surface of the support plate 126 below the linear motion guide 128, and its piston rod 160 extends in parallel with the linear motion guides 128 and 130.
[0040]
According to the side flap folding mechanism 124 described above, when the article to be packaged A0 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 folds are performed. The raised tucker 120 is positioned outside the packaged item A0 in the pocket 20 at the second rotation angle position P2 when viewed from the rest position indicated by the solid line in FIG. 10, more specifically, in the radial direction of the tucker 2. . When the piston rod 160 of the air cylinder 158 is contracted from such a state, the contraction rotates the swing lever 148 via the connector 154. That is, the swing lever 148 is rotated counterclockwise as viewed in FIG. Such pivoting of the swing lever 148 attracts the holders 140 and 142 in the directions close to each other via the link rods 152 and 156, so that these holders 140 and 142 are guided by the linear motion guides 128 and 130. The pair of side folded tuckers 120 are moved from the rest position in directions close to each other as indicated by a two-dot chain line in FIG. As a result, as shown in FIG. 9, FIG. 11 and FIG. 12, one side ring SR of the body folded sheet UF is folded at both ends to form a pair of side flaps SF, and The side flap SF is folded up.
[0041]
Thereafter, in the process in which the turret 2 is intermittently rotated, the piston rod 160 of the air cylinder 158 is extended, and the pair of side folded tuckers 120 before the next packaged item A0 reaches the second rotation angle position P2. It is possible to return to the rest position indicated by the solid line in FIG. Accordingly, with respect to the next packaged item A0 located at the second rotation angle position P2, the side flap SF of one side is folded in the same manner.
[0042]
On the other hand, the article to be packaged A0 that has been in the second rotational angle position P2 is positioned in the outlet rotational angle position PEX together with the pocket 20, and in this process, as shown in FIG. The folding is performed. Here, 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.
[0043]
The folding mechanism 170 includes a tacker plate 172 extending from the second rotation angle position P2 to the outlet rotation angle position PEX, and the upper edge of the tacker plate 172 is reciprocating directly below the pair of side folding tackers 120. It extends along the path. The tacker plate 172 is divided into a movable tacker plate 174 and a fixed plate 176 located on the second rotation angle position P2 side. When the article A0 to be packaged is positioned at the second rotation angle position P2, the movable tacker The upper edge 178 of the plate 174 extends along the side surface just below the side surface of the packaged product A0.
[0044]
The lower edge of the movable tacker plate 174 and the upper edge of the fixed plate 176 are formed in a comb-like shape as indicated by broken lines in FIG. 10, and these comb-tooth portions are the upper edges 178 of the movable tacker plate 174. Are engaged with each other from a direction perpendicular to the direction.
As shown in FIG. 11, the movable tacker plate 174 is connected to the support plate 126 through the connection member 180, and keeps meshing with the fixed plate 176 as the support plate 126 moves. The side of the pocket 20 at the two rotation angle position P2 can be moved. Here, since the support plate 126 also supports the pair of side folded tuckers 120 as described above, when the support plate 126 is moved, the pair of side folded tuckers 120 also move to the second rotational angle position. The side of the pocket 20 in P2 is moved.
[0045]
If the movable tacker plate 174 as described above is provided, when the article to be packaged A0 moves from the second rotation angle position P2 toward the exit rotation angle position PEX, the other side flap SF is shown in FIG. In this manner, the upper flap is bent upward at the upper edge of the movable tacker plate 174. The side flap SF is folded between the inner surface of the movable tacker plate 174 and the side surface of the packaged article A0, and the inner surface of the fixed plate 176. And the packaged product A0 are maintained even if the packaged product A0 reaches the outlet rotation angle position PEX.
[0046]
At this time, one side flap SF in the folded state is also guided along the inner surfaces of the movable tacker plate 174 and the fixed plate 176. Further, when the article A0 to be packaged is positioned at the outlet rotation angle position PEX, the fixed blade 22 of the pocket 20 is in the same plane as the fixed blade 22 of the pocket 20 at the inlet rotation angle position PIN, that is, the above-described carry-in. It is positioned at the same level as the path 4.
[0047]
The movement of the support plate 126 is performed by the support plate adjustment mechanism 200 shown in FIG. 13, and 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, but these support plates 126 can be moved in conjunction with the adjusting mechanism 200.
[0048]
A pair of bearings 202 are provided on the outer surface of each support plate 126, and support shafts 204 are respectively passed through these bearings 202. These support shafts 204 extend from a pair of left and right carry-out frames 206, and their base ends are fixed to the corresponding carry-out frames 206. Accordingly, each support plate 126 is slidably supported on the support shaft 204 via the pair of bearings 202. In FIG. 13, the carry-out frame 206 is partially cut away, but these carry-out frames 206 are located on the outlet rotation angle position PEX side of the turret 2 and are erected in parallel with each other.
[0049]
As shown in FIG. 14, a cross plate 208 is stretched 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.
A through hole (not shown) is formed at the center of the cross plate 208, and a nut member 210 is fixed to the cross plate 208 so as to be coaxial with the through hole. The threaded portion of the feed screw 212 is inserted into the through hole and the nut member 210, and the threaded portion is screwed into the nut member 210. A knob 214 is attached to one end of the feed screw 210, and an extension shaft portion 216 extends from the other end. The distal end portion of the extension shaft portion 216 penetrates the upper portion of the bearing holder 218 and is rotatably supported by the bearing holder 218.
[0050]
A guide rod 220 passes through the lower portion of the bearing holder 218, and the guide rod 220 extends horizontally, and both ends of the guide rod 220 pass through the pair of carry-out frames 206 via the guide sleeve 222. That is, both ends of the guide rod 220 are supported by the corresponding carry-out frame 206 via the guide sleeve 222.
[0051]
Further, a lock lever 224 is provided on the upper surface of the bearing holder 218, and the lock lever 224 rotates the set screw 226 (see FIG. 14) in the bearing holder 218 to an extension shaft portion of the feed screw 212. 216 can be advanced or retracted. That is, by rotating the lock lever 224, the set screw 226 is pressed against the extension shaft portion 216, whereby the feed screw 212 can be prevented from rotating, and if the press is released, the feed screw 212 can be rotated. Become.
[0052]
According to the support plate adjusting mechanism 200 described above, when the feed screw 212 is rotated through the knob 214 in a state where the lock lever 224 is unlocked, the cross plate 208 is displaced in the axial direction of the feed screw 212. Accordingly, as a result of the pair of support plates 126 moving in conjunction with each other, the position of the support plate 126 can be adjusted according to the thickness of the packaged product A0 at the second rotation angle position P2. In other words, the upper edge 178 of the movable tacker plate 174 and the lower surfaces of the pair of side folded flaps 120 are at the second rotation angle position P2 by adjusting the movement of the support plate 126 regardless of the width of the packaged product A0. With respect to the side surface of the article to be packaged A0, it can be accurately positioned along the lower edge as the lower side. 10 and 13, the movable tacker plate 174 and the side folding flap 120 are shown in the state most moved to the fixed plate 176 side, that is, in a state suitable for the packaged product A0 having the maximum allowable thickness. ing.
[0053]
Referring to FIG. 13 again, a guide rod 228 is horizontally disposed below the pair of left and right carry-out frames 206 between the carry-out frames 206. The guide rod 228 is similar to the guide rod 220 described above. Both ends thereof are supported by the left and right carry-out frames 206 via guide sleeves 230.
Further, connecting plates 231 extend from the left and right carry-out frames 206 to the turret 2 side, and each connecting plate 231 is connected to a corresponding fixed plate 176. Therefore, each fixing plate 176 is in a state of being supported by the carry-out frame 206.
[0054]
Further, three feed screw shafts 232 are disposed between the pair of left and right carry-out frames 206, and two of these feed screw shafts 232 are located in the vicinity of the guide rods 220 and 228 as is apparent from FIG. The remaining one is positioned 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. One screw portion 234 is a right screw and the other screw portion 236 is a left screw. The left and right screw portions 234, 236 of each feed screw shaft 232 are respectively screwed into nut members 238, 240 fixed to the corresponding carry-out frame 206, and project outside the carry-out frame 206. Referring to FIG. 15, the feed screw shaft 232 positioned at the lowermost side among the three feed screw shafts 232 is shown. A sprocket 242 is attached to one end of each feed screw shaft 232, and a chain 244 is wound around these sprockets 242.
[0055]
A knob 246 is attached to one end of the feed screw shaft 232 shown in FIG. 15, and the feed screw shaft 232 can be rotated by the knob 246, and the rotation of the feed screw shaft 232 is caused by the sprocket 242. As a result of being transmitted to the other two feed screw shafts 232 via the chain 244, these feed screw shafts 232 are also rotated in conjunction with each other. When the three feed screw shafts 232 are rotated in this way, the pair of left and right carry-out frames 206 are guided toward and away from each other while being guided by the pair of upper and lower guide rods 220 and 228 (arrows in FIG. 15). (J direction). As a result, the interval between the carry-out frames 206 is adjusted.
[0056]
Here, as described above, the pair of left and right carry-out frames 206 support the pair of left and right support plates 126 via the support shaft 202 and the pair of bearings 202 (see FIG. 14). The distance between the pair of left and right support plates 126, that is, the distance between the left and right movable tacker plates 174 supported by the left and right support plates 126, and the pair of left and right support plates 126 is adjusted. This means that the distance between the side folded 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 according to the width W of the packaged product A0. Even when the width of the packaged product A0 is different, the left and right tacker plates 172 ( The movable tacker plate 174 and the fixed plate 176) and the pair of left and right side folded tuckers 120 can be positioned at appropriate positions.
[0057]
In the left and right carry-out frames 206, the above-mentioned carry-out path 12 is formed in order to guide the packaged product A0 discharged from the turret 2, and this carry-out path 12 is in the vicinity of the outlet rotation angle position PEX of the turret 2. Extends horizontally. As shown in FIG. 15, the carry-out path 12 is composed of a pair of left and right upper carry-out guides 250 and a pair of left and right lower carry-out guides 252. The pair of upper carry-out guides 250 is a plate whose lower surface is formed as a guide surface. It is a member. Each upper carry-out guide 250 is supported by the carry-out frame 206 on the corresponding side via a bracket 254, and the lower surface of these upper carry-out guides 250, that is, the guide surface thereof is the fixed blade of the pocket 20 at the exit rotation angle position PEX. 22 is positioned at the same level.
[0058]
On the other hand, as is clear from FIG. 15, the left and right lower carry-out guides 252 are formed of angle members, and the upper surfaces thereof are formed as guide surfaces. The guide surfaces of the lower carry-out guides 252 are located in the same horizontal plane, and are in a state of facing and facing downward from the guide surface of the corresponding upper carry-out guide 250. Further, 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 dimension of the packaged product A0.
[0059]
  Lift plates 256 are respectively arranged between the respective lower transport guides 252 and the corresponding carry-out frames 206,As shown in FIG.Each lifting plate 256 has one end connected to the lower center end of the lower conveyance guide 252 on the corresponding side. These lift plates 256 are once bent downward and then extend horizontally toward the turret 2.
[0060]
Guide rods 258 extend downward from both ends of each lifting plate 256, and these guide rods 258 penetrate the lifting guide 260 slidably. 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 elevating plate 256. These nut members 262 are slidable in the vertical direction, although they cannot rotate with respect to the inner surface of the corresponding carry-out frame 206. Are engaged. Each nut member 262 is screwed with a feed screw shaft 264. The feed screw shaft 264 extends in the vertical direction, and the upper end of the feed screw shaft 264 penetrates the lifting plate 256. As shown in FIG. 16, screw gears 266 are respectively attached to the lower ends of the feed screw shafts 264, and these screw gears 266 are respectively engaged with screw gears 270 attached to the gear shaft 268. The gear shaft 268 extends horizontally between the pair of left and right carry-out frames 206, and both ends thereof are rotatably supported by the carry-out frames 206 on the corresponding side. 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 way, the left and right feed screw shafts 264 are rotated through the meshing of the screw gears 266 and 270. As a result, the left and right lifting plates 256 are moved up and down in conjunction with each other. The height levels of the left and right lower conveyance guides 252, that is, the guide surfaces thereof can be adjusted. Therefore, the interval between the upper carry-out guide 250 and the lower carry-out guide 252 can be adjusted according to the thickness of the packaged product A0. That is, when the article to be packaged A0 is positioned at the outlet rotation angle position PEX, the guide surfaces of the pair of left and right lower carry-out guides 252 can be positioned at the same level with respect to the lower surface.
[0061]
Further, in the pair of left and right carry-out frames 206, a carry-out device 274 for discharging the packaged product A0 at the outlet rotation angle position PEX from the pocket 20 to the carry-out path 12 is disposed. Details of 274 are shown in FIG. The carry-out device 274 includes a base 276 disposed between the pair of left and right carry-out frames 206, and the base 276 extends along the carry-out path 12 below the carry-out path 12. The guide rod 228, the feed screw shaft 232, and the gear shaft 268, which are located at the lower part of the carry-out frame 206, extend through the base 276. In FIG. 15, the feed screw shaft 232 that passes through the base 276 is shown. It is shown.
[0062]
A guide rail 278 is provided on the upper surface of the base 276, and a pair of front and rear sliders 280 separated along the carry-out path 12 are provided on the guide rail 278. A carriage 282 is provided on the slider 280. Has been placed. A driving plate 284 is attached to one side edge of the carriage 282 so as to be positioned between the sliders 280, and the driving plate 284 extends downward on the side of the base 276. A swing lever 286 is disposed below the base 276. The swing lever 286 extends in the vertical direction, and its lower end is rotatably supported. The upper end of the swing lever 286 and the lower end of the drive plate 284 are connected to each other via a link rod 288. A drive disk 290 is vertically arranged in the vicinity of the swing lever 286, and the drive disk 290 can be rotated at a constant speed counterclockwise as viewed in FIG. 17 by a drive source (not shown). One end of a crank lever 292 is connected to the outer peripheral portion of the drive disk 290, and the other end is connected to an intermediate portion of the swing lever 286.
[0063]
  When the drive disk 290 rotates once counterclockwise from the state shown in FIG. 17, the swing lever 286 reciprocates via the crank lever 292, and the link rod 288 and the drive plate 284 are accompanied by this reciprocal rotation. The carriage 282 reciprocates with a predetermined stroke via the.
  A pair of left and right discharge hands 294 are provided at the end of the carriage 282 located on the turret 2 side, and these discharge hands 294 are made of plates and extend into the turret 2. More specifically, the pair of left and right discharge hands 294 are disposed in the turret 2 on the side frame 1 corresponding to the side edges of the fixed blade 22 and the movable blade 24.3In the gap 296 (see FIG. 5). Therefore, the discharge hand 294 does not prevent the turret 2 from rotating. The tip of each discharge hand 294 is bent upward and formed as a discharge claw 298. In FIG. 17, when in the position indicated by the solid line, these discharge claws 298 are positioned on the back side of the pair of movable claws 30 of the pocket 20 at the outlet rotation angle position PEX, and the upper ends of the discharge claws 298 are The pocket 20 is positioned directly below the fixed blade 22.
[0064]
In addition, a lifting platform 300 is horizontally disposed above the carriage 282, and the lifting platform 300 is attached to a pair of front and rear guide rods 302 so as to be movable up and down. These guide rods 302 are erected on the upper surface of the carriage 282, respectively. A bracket 304 is fixed to the lower surface of the lifting platform 300, and a guide slot 306 is formed horizontally on the bracket 304. On the other hand, a rotary cylinder 308 is disposed on the carriage 282, and a base end of a rotation lever 310 is attached to an output shaft of the rotary cylinder 308. The rotation lever 310 extends upward, and a pin 312 attached to the tip of the rotation lever 310 is slidably fitted into the guide slot 306 of the bracket 304. In the state shown in FIG. 17, the rotation lever 310 is standing and is in a state in which the lifting platform 300 is pushed up via the bracket 304.
[0065]
  A pair of front and rear carry-out claws 314 are provided on the upper surface of the elevator 300, and the carry-out claws 314 and the discharge claws 298 are positioned at the same interval. Here, these intervals are set to be larger than the allowable maximum length of the packaged product A0. Unload as shown in FIG.nail314 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 positioned at the same level as the upper end of the discharge claw 298.
[0066]
  According to the carry-out device 274 described above, when the carriage 282 is moved leftward as viewed in FIG. 17, the pair of left and right discharge claws 298 and the front and rear carry-out claws 314 are accompanied with this forward movement.AlsoIt is also moved to the left. Accordingly, the pair of left and right discharge claws 298 abut against the back end face of the packaged product A0 at the exit rotation angle position PEX, and can push the packaged product A0 toward the carry-out path 12, thereby The packaged product A0 moves to the first unloading position Ps1 on the unloading path 12 while being guided by the upper and lower unloading guides 250 and 252 of the unloading path 12. In the left and right lower carry-out guides 252, slits (not shown) are respectively formed at end portions on the turret 2 side from the front end to a predetermined length, and the discharge hand 294 enters the slits. Thus, interference between the discharge hand 294 and the lower carry-out guide 252 is prevented.
[0067]
When the carriage 282 moves backward, the pair of discharge claws 298 return to their original positions indicated by the solid lines in FIG. 17. At this time, the rotary cylinder 308 described above rotates the rotating lever 310 clockwise as viewed in FIG. Rotate by 90 °. Such rotation of the pivot lever 310 pushes the bracket 304 downward via the pin 312, so that the elevator 300 is lowered to a predetermined position, and the pair of unloading claws 314 of the elevator 300 has the upper ends thereof. It is positioned below the carry-out path 12, that is, the guide surface of the lower carry-out guide 252. Accordingly, the carry-out claw 314 of the lifting platform 300 can be moved back together with the carriage 282 without interfering with the packaged product A0 discharged onto the carry-out path 12, and the packaged product A0 is in its first carry-out position. It will stay at PS1.
[0068]
As will be described later, when the article to be packaged A0 is discharged from the pocket 20 at the exit rotation angle position PEX onto the carry-out path 12, one of the body folded sheets UF in the folded state during the discharge process. The side flap SF is folded back, and the packaged product A0 is folded at the first carry-out position PS1 so that one side flap SF overlaps the other side flap SF, and at the same time, these are heat-sealed. As a result, the packaged product A0 becomes the packaged product A1 completely packaged by the film sheet FS.
[0069]
Thereafter, when the next packaged product A0 is positioned at the outlet rotation angle position PEX, the pair of discharge claws 298 and the pair of carry-out claws 314 are reciprocated in the same manner, and the first carry-out position Ps1 is accompanied by this reciprocation. The package A1 is pushed out by one unloading claw 314 and moved to the next second unloading position PS2, and is discharged from the outlet rotation angle position PEX to the empty first unloading position PS1. A0 is positioned.
[0070]
By sequentially repeating the above-described operation, the articles to be packaged A0 are sequentially discharged from the turret 2 onto the carry-out path 12, and the packaged goods A1 on the carry-out path 12 are intermittently conveyed.
In the carry-out path 12 described above, the left and right upper carry-out guides 250 are respectively attached with folding pieces 316 made of plates at the ends located on the turret 2 side (see FIGS. 13 and 15). The lower surface of the piece 316 is positioned at the same level as the lower surface of the upper carry-out guide 250, that is, 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-back portion 318 having a triangular shape covers the outlet rotation angle position PEX. When the packaged product A0 is positioned, it faces the edge of one side flap SF in the folded state of the body-folded sheet UF, and the facing surface is formed as a curved surface. .
[0071]
If the above-described folding pieces 316 are provided at the start end of the carry-out path 12, the folding sheet UF is folded when the packaged product A0 is discharged from the exit rotation angle position PEX toward the carry-out path 12. The side flap SF in the raised state is guided to the folded portion 318 of the folded piece 316 on the corresponding side and folded back almost horizontally. Here, since the left and right folded pieces 316 are attached to the upper carry-out guide 250 supported by the carry-out frame 206, the interval between the folded pieces 316 is also used to adjust the gap between the left and right carry-out frames 206. Accordingly, adjustment is made according to the width of the packaged product A0.
[0072]
A pair of left and right primary heat seal devices are respectively arranged on both sides of the first carry-out position PS1, and FIG. 18 shows the primary heat seal device 320 on one side. The primary heat seal device 320 includes a pair of upper and lower brackets 322 protruding from the outer surface of the carry-out frame 206, and a guide rod 324 extends between the brackets 322. The upper end and the other end of the guide rod 324 are supported by upper and lower brackets 324, respectively.
[0073]
A pair of upper and lower elevating members 326 and 328 are attached to the guide rod 324 so as to be movable up and down, and these elevating 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 be moved up and down in conjunction with each other.
On the other hand, on the outer surface of the carry-out frame 206, an air cylinder 332 is disposed below the lower bracket 322, and the piston rod 334 of the air cylinder 332 is connected to the lower lifting member 328. ing. Accordingly, the pair of elevating members 326 and 328 are in a state of being supported by the air cylinder 332.
[0074]
As is clear from FIG. 18, the elevating members 326 and 328 extend toward the carry-out path 12 through openings formed in the carry-out frame 206. A folding tucker 338 incorporating a heater 336 is attached to the tip of the upper elevating member 326, and a guide 340 is attached to the tip of the lower elevating member 328. In the state shown in the figure, the guide 340 guides the side surface of the packaged product A0 at the first carry-out position Ps1, and the folding tucker 340 is positioned immediately above the guide 340. The guide 340 and the folding tucker 340 extend along the carry-out path 12.
[0075]
When the piston rod 334 of the air cylinder 332 is contracted from the state shown in the drawing, the folding tucker 338 and the guide 340 are moved downward through the upper and lower elevating members 326 and 328. Therefore, the folding tacker 338 folds the package A0 at the first carry-out position Ps1 so that one side flap SF that has already been folded is superimposed on the other side flap SF, and the heater As a result of energizing 336, the side flaps SF are heat-sealed. At this point, the packaged product A0 is completely packaged. Here, when folding with the folding tacker 338, the guide 340 is lowered while maintaining the folded state of the other side flap SF, so that the one side flap SF is securely superimposed on the other side flap SF by the folding. Is done. Thereafter, the folding tucker 338 and the guide 340 are raised to their original positions and are on standby.
[0076]
Further, a pair of left and right secondary heat seal devices are arranged on both sides of the second carry-out position Ps2, and FIG. 19 shows the secondary seat seal device 350 on one side. The secondary heat seal device 350 includes a bracket 352 protruding 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, and one link 356 has a lower end attached to the shaft 360. The shaft 360 protrudes from the bracket 352 through the bracket 352 so as to be rotatable. On the other hand, the lower end portion of the air cylinder 362 is rotatably supported by the bracket 352, and the tip end of the piston rod 364 is connected to the protruding end of the shaft 360 via the drive lever 366.
[0077]
As is apparent from FIG. 19, the arm plate 354 extends toward the carry-out path 12 through the opening of the carry-out frame 206, and a heat sealer 370 incorporating a heater 368 is attached to the tip thereof.
When the piston rod 364 of the air cylinder 362 is extended from the state shown in FIG. 19, the shaft 360 is rotated via the drive lever 366, so that one link 356 is rotated, whereby the heat sealer 370 is moved to the first position. 2 Pressed against the side flap SF of the packaged product A1 that has reached the unloading position PS2, and performs secondary heat sealing on the side flap SF. Thereafter, the heat sealer 370 returns to the original position and stands by.
[0078]
Even in the primary heat seal device 320 and the secondary heat seal device 350 described above, 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 them, the positions can be accurately positioned according to the width of the packaged product A0.
[0079]
The present invention is not limited to the above-described embodiment, and various modifications can be made. 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 within a range in which the operation of the present invention can be implemented.
[0080]
【The invention's effect】
As described above, according to the turret-type overwrapping machine according to the first aspect, it is possible to wrap a packaged product of various sizes by simply adjusting each part without replacement of parts. Thus, the versatility is excellent.
According to the overwrapping machine of the second aspect, 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 cope with the switching of the packaged products.
[0081]
  According to the overwrapping machine of claim 3, regardless of the thickness of the packaged product, the packaged product starts to move from the second rotation angle position toward the exit rotation angle position, and at the same time, the side flaps are folded. Can be started and can be folded stably.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a turret type overwrapping machine.
FIG. 2 is a schematic view showing the flow of articles to be packaged and film sheets 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 the turret.
FIG. 8 is a side view showing a trunk sealing device.
FIG. 9 is a perspective view showing a folding procedure of a trunk fold seal.
FIG. 10 is a side view showing a side flap folding device.
11 is a rear view of the apparatus of FIG.
12 is a plan view of the apparatus of FIG.
FIG. 13 is a view showing a carry-out side adjacent to the turret.
FIG. 14 is a plan view showing a support plate adjustment 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 adjustment mechanism of a lower carry-out guide.
FIG. 17 is a schematic side view showing the carry-out device.
FIG. 18 is a view showing a primary heat sealing apparatus.
FIG. 19 is a view showing a secondary heat sealing apparatus.
[Explanation of symbols]
2 Turret
20 pockets
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 Lead screw (fourth adjusting means)
232 Feed screw shaft (second adjusting means)
H.264 feed screw shaft (third adjusting means)
316 Folding piece (side flap folding means)
320 Primary heat sealing device

Claims (3)

A rotatable turret,
The turret is provided at equal intervals in the circumferential direction, and when the turret is positioned at a predetermined inlet rotation angle position with rotation of the turret, the packaging sheet is received together with a box-shaped packaged article, and the packaging sheet is A plurality of pockets formed in a body-folded sheet that is folded in a U-shape along the outer surface of the packaged product;
When the pocket is positioned from the entrance rotation angle position to the first rotation angle position with the rotation of the turret, a pair of cylinder flaps of the cylinder fold sheet are sequentially folded, and a cylinder sealing means for overlapping and adhering to each other ,
Along with the rotation of the turret, when the pocket is positioned from the first rotation angle position to the second rotation angle position, both ends of the left and right sides of the body folded sheet are folded, and a pair of side flaps are provided on each side. And side flap folding means for folding one side flap on the first rotational angle position side of the pair of side flaps,
Side flap folding means for folding the other side flap of the pair of side flaps when the pocket moves from the second rotational angle position toward the outlet rotational angle position as the turret rotates.
The one side flap is folded in a process in which the semi-wrapped product wrapped in the body-folded sheet is discharged from a pocket positioned at the exit rotation angle position onto a predetermined carry-out path extending outside the turret. Side flap folding means for returning;
When the semi-wrapped product is positioned at a predetermined position on the carry-out path, side seal means that folds the one side flap onto the other side flap and overlaps and adheres to each other;
First adjusting means for adjusting the depth and inner method of each pocket corresponding to the length and thickness of the packaged article;
Each operation position where the side flap folding means, the side flap folding means, the side flap folding means, and the side seal means perform the action on the body folded sheet is adjusted according to the width of the packaged product. Second adjusting means to perform,
A turret type overwrapping machine, comprising: third adjusting means for adjusting a level position of the carry-out path with respect to the outlet rotation angle position according to a thickness of the packaged product.   2. The turret-type top wrapper according to claim 1, wherein the second adjustment unit can simultaneously adjust the operation positions in conjunction with each other.   The said adjustment position of the said side flap folding means with respect to a said 2nd rotation angle position is further provided with the 4th adjustment means which adjusts according to the thickness of the said to-be-packaged goods, The Claim 1 or 2 characterized by the above-mentioned. Turret type overwrapping machine.

Images