JP7126070B2 - Sheet supply device for wrap round caser - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wrap-round caser sheet supplying apparatus for supplying a wrap-round caser sheet for wrapping a group of articles in the wrap-round caser to the wrap-round caser.

Conventionally, there is known a wrap round caser sheet supply device that supplies a wrap round caser sheet from a direction intersecting the conveying direction to a group of articles conveyed on a conveyor of the wrap round caser (Patent Document 1, 2, 3). The sheet for the wrap-around caser has a bottom surface on which a group of articles is placed, a rear side surface connected to one side of the bottom surface, a front side surface connected to the other side of the bottom surface, and a front side surface opposite to the bottom surface. and a top surface connected to the sides. A folding flap is provided on the side of the rear side surface opposite to the bottom surface. In the device described in Patent Document 2, the folding flap is folded inward by a tucker after the group of articles is placed on the bottom surface, and is coated with an adhesive and adhered to the top surface. As a result, the sheet for the wrap-around caser is formed into a rectangular tubular shape surrounding the front, back, top and bottom of the group of articles.

Japanese Patent No. 4641256 Japanese Patent No. 4698496 Japanese Patent No. 6045883

In recent years, sheets for wrap-around casers have been made thinner in order to reduce costs and deal with environmental problems. For this reason, the difference between the thickness of the folding line formed between the surfaces and the thickness of the wrap round caser sheet itself is becoming smaller. Due to these factors, there is a problem that when the folding flap is folded by the tucker, the flap to be folded may not be folded along the predetermined folding line.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet feeding device for a wrap-around caser that enables folding flaps to be accurately folded in the wrap-around caser.

The present invention is divided into a rectangular top surface, a front side surface, a bottom surface, and a rear side surface by first, second, and third folding lines that are parallel to each other. This is a wrap round caser sheet supply device for supplying a wrap round caser sheet provided with a folding flap via a fourth folding line parallel to the third folding line. A wrap round caser sheet supply device according to the present invention includes a magazine for storing a wrap round caser sheet, a take-out means for taking out the wrap round caser sheet from the magazine and moving it to a take-out position, and a move by the take-out means. A folding guide for folding the wrap round caser sheet along the second folding line by engaging with the wrap round caser sheet which is moved by the take-out means, and a folding flap of the wrap round caser sheet moved by the take-out means. a folding pusher that presses an area near the fourth folding line on the rear side surface of the sheet for the wrap round caser; and a pressing that presses the folding pusher against the area near the fourth folding line. position and a standby position for avoiding interference with the wrap-around caser sheet moved to the take-out position; Sheet discharging means for a wrap round caser that moves in a direction along a line and discharges the sheet, an engagement position where the engagement guide is positioned within the movement path of the folding flap, and a retracted position out of the movement path of the folding flap. and an engaging guide moving means for moving the folding pusher from the standby position to the pressing position in a state where the folding flap of the sheet for the wrap round caser moved to the take-out position is engaged with the engaging guide. As a result, the folding flap is folded along the fourth folding line, and the engagement guide is moved from the engagement position to the standby position before the sheet for the wrap round caser at the take-out position is ejected . .

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to bend a folding flap correctly in a wrap round caser.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a configuration of a wrap round caser provided with a sheet supply device for a wrap round caser according to an embodiment of the present invention; FIG. 2 is a side view of a sheet conveying conveyor for the wrap-round caser used in the wrap-round caser of FIG. 1; FIG. 4 is a developed view of the sheet for the wrap round caser; FIG. 4 is a side view of the sheet supply device for the wrap round caser; It is a figure which shows the action of an engagement guide and a folding pusher. FIG. 10 is a diagram showing a state of the engagement guide and the folding pusher when the sheet for the wrap-around caser is placed on the sheet discharge conveyor; FIG. 5 is a side view showing a wrap round caser sheet ejection mechanism for ejecting a wrap round caser sheet from a take-out position;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the structure of a wrap round caser equipped with a sheet supply device for the wrap round caser according to one embodiment of the present invention, and FIG. 2 is a side view of a sheet transport conveyor for the wrap round caser. is. FIG. 3 is a plan view of the sheet for the wrap round caser in an unfolded state.

The wrap-around caser 10 is a device that wraps a group of articles, in which a plurality of articles are collected together, in a single wrap-around caser sheet R into a box shape. The articles are, for example, bottle-shaped containers V, and are supplied by the article supply conveyor 12 as an article group G in units of a predetermined number of containers V. FIG. In the illustrated example, 12 containers V form an article group G in which 12 containers V are arranged upright and in close contact with each other in four columns and three columns. The group of articles G is pushed on the conveying surface by flight bars 12F that are stretched over endless belts 12C installed on both sides of the article supply conveyor 12 at predetermined intervals.

On the downstream side of the article supply conveyor 12, a sheet conveying conveyor 16 for the wrap round caser is provided with a sheet delivery section 14 for receiving the sheet R for the wrap round caser from the sheet supply device 60 for the wrap round caser (see FIG. 4). , and the sheet delivery portion 14 includes an upstream fixed plate 14F and a downstream slide plate 14P. The slide plate 14P has a first position in which the upstream end of the slide plate 14P slides under the fixed plate 14F in a slightly inclined state, and a first position in which the downstream end of the slide plate 14P in a horizontal state slides into the wrap round caser sheet conveyor. It is reciprocable to and from a second position adjacent the upstream end of 16 .

The wrap round caser sheet R is supplied in a state of being folded into an L shape from the side of the sheet delivery section 14 with the slide plate 14P arranged at the first position. The slide plate 14P moves from the first position toward the second position in synchronism with the container group G transported to the downstream end of the fixed plate 14F by the flight bar 12F, thereby moving the flight bar 14P. The container group G on the fixed plate 14F pushed out by 12F is transferred to the upper surface of the slide plate 14P.

The slide plate 14P moves the wrap round caser sheet R supplied to the sheet transfer section 14 while gradually changing its posture from the tilted state at the first position to the horizontal state toward the second position. Moved above the bottom surface. When the slide plate 14P reaches the second position, the slide plate 14P is positioned above the bottom surface of the wrap round caser sheet R supplied to the sheet transfer section 14 in a horizontal state.

After that, the slide plate 14P starts to move to the first position, and the container group G on the slide plate 14P is continuously pushed out in the conveying direction by the flight bar 12F to the bottom surface of the wrap-around caser sheet R. Transferred sequentially. Synchronously with this, the wrap round caser sheet R to which the group of articles G is transferred is in a state where the front row of the group of articles G is in contact with the upright portion of the sheet R for the wrap round caser that is bent in an L shape. , and transferred to the sheet transport conveyor 16 for the wrap round caser on the downstream side. As will be described later, in the wrap-around caser sheet conveying conveyor 16, the wrap-around caser sheet R on which the group of articles G is placed is folded into an L shape, and the sheet R for the wrap-around caser on which the group of articles G is placed is further folded around the group of articles G, and the side The flaps are glued together and the group of articles G is packaged in a box shape.

The wrap round caser sheet R corresponds to, for example, a developed rectangular parallelepiped, and has a shape shown in the developed view of FIG. 3 in this embodiment. In FIG. 3, the sheet R for the wrap-around caser has a rectangular top surface P1, a front side surface P2, a bottom surface P3 and It is partitioned on the rear side surface P4. A pair of top surface side flaps F1 is provided on the opposite sides of the top surface P1, and a pair of front side flaps F2 is provided on the opposite sides of the front side surface P2, the bottom surface P3, and the rear side surface P4. A bottom side flap F3 and a rear side flap F4 are provided. A folding flap F5 is provided on the rear side surface P4 on the side opposite to the bottom surface P3 via a fourth folding line L4 parallel to the third folding line L3.

The wrap round caser sheet R supplied to the sheet transfer section 14 is bent at right angles along a second folding line L2 defining the boundary between the front side surface P2 and the bottom surface P3 to form an L shape. The sheet is supplied to the sheet delivery portion 14 in a state in which the surface including the front side surface P2 is upright and the same surface is positioned downstream in the conveying direction. The group of articles G is transferred to the wrap-around caser sheet R supplied to the sheet transfer section 14 by the above-described procedure, and the wrap-around caser sheet R is placed in a state in which the containers V in the front row are in contact with the front side surface P2. The sheet is delivered to the sheet transport conveyor 16 .

When the wrap round caser sheet R on which the article group G is placed is delivered to the wrap round caser sheet conveying conveyor 16, the top folding guide 18 arranged above the wrap round caser sheet conveying conveyor 16 is opened. (See FIG. 2), the top surface P1 is folded so as to cover the article group G along the first folding line 1 defining the boundary between the top surface P1 and the front side surface P2. Below the top surface folding guide 18 on the downstream side, a top surface pushing pusher 18P pushes down the top surface P1 from above so that the tip of the top surface P1 is positioned below the tip of the upright folding flap F5. is placed.

As shown in FIG. 2, the wrap round caser sheet conveying conveyor 16 includes a pair of parallel endless belts 20 arranged along the conveying direction. A number of fingers 20F are provided. The finger 20F abuts on the rear side surface P4 of the wrap round caser sheet R from the lower surface side, and bends the rear side surface P4 to stand upright along the third folding line L3 with respect to the bottom surface P3. Further, the finger 20F pushes the upright rear side surface P4 from the rear, and sequentially conveys the wrap round caser sheets R on which the article group G is placed downstream at regular intervals.

On both sides of the upstream end of the sheet transport conveyor 16 for the wrap round caser, flap folding pieces 22 capable of reciprocating rotation are provided (see FIG. 1). The flap bending pieces 22 are engaged from the rear with the rear side flaps F4 extending outward from both sides of the rear side surface P4 erected by the fingers 20F, and move them forward (downstream in the transport direction), that is, toward the inside of the case. fold into.

Further, side guides 24 are arranged on both sides of the conveying path of the sheet conveying conveyor 16 for the wrap round caser (see FIG. 1). The side guide 24 can reciprocate in the transport direction and width direction by a side guide driving mechanism 24M. Each of the side guides 24 is positioned outside the front side surface P2 in the width direction, and the front side flaps F2 extending outward from both sides of the upright front side surface P2 are formed by conveying the wrap round caser sheet R. , and is bent rearward (upstream in the conveying direction), that is, inwardly of the case.

After that, the side guides 24 are moved by the side guide driving mechanism 24M by a predetermined distance in the conveying direction at a speed faster than the wrap round caser sheet R, and separated by a predetermined distance. In parallel with this, the flap folding piece 22 folds the rear side flap F4 forward (to the downstream side in the transport direction). The rear side flap F4 that has been bent forward by the flap bending piece 22 is inserted inside the side guide 24 spaced apart by a predetermined distance, and the front side flap F2 that has been bent rearward and the rear side flap that has already been bent forward are inserted. The side guides 24 move in the conveying direction while sandwiching F4 from the sides. That is, the sheet R for the wrap round caser is sent between the fixed guides 25 on the downstream side in a state where the front/rear side flaps F2 and F4 are folded. After that, the side guides 24 are returned from the spaced state to the original space, move upstream, and repeat the same process. Note that FIG. 1 shows only the side guide 24 on one side and the side guide driving mechanism 24M.

By the above steps, as shown in FIG. 2, the front side surface P2 and the rear side surface P4 are erected (set so as to face each other with the article group G sandwiched therebetween), and the top surface P1 covers the article group G. The front side flap F2 and the rear side flap F4 are folded while being covered. In this state, the top surface P1 is pushed down by the top surface pushing pusher 18P, and the adhesive is sprayed from the folding flap glue injection nozzle 26 onto the rear surface of the folding flap F5 extending upward from the rear side surface P4.

A folding member 28 that can reciprocate in the front-rear direction (conveyance direction) is provided downstream of the folding flap glue injection nozzle 26 in the conveying direction of the wrap round caser sheet conveying conveyor 16 . The folding member 28 engages with the folding flap F5 from behind by swinging in the front-rear direction, and folds the folding flap F5 coated with the adhesive under the top surface P1. Before the folding flap F5 is folded under the top surface P1 by the folding member 28, the top surface P1 is moved to a position above the folding flap F5 by a guide (not shown) so that the top surface P1 and the folding flap F5 interfere with each other. is prevented.

An endless chain 30 having a plurality of front side top guides 30A and rear side top guides 30B alternately arranged at predetermined intervals above the sheet conveying conveyor 16 for the wrap round caser on the downstream side of the folding member 28 along the conveying surface. be done. The front top guide 30A and the rear top guide 30B move while holding from the front and rear the front and rear edges of the top surface P1 where the folding flap F5 is folded. Below the endless chain 30, a top surface pressing roller 32 is arranged to press the top surface P1 of the transported wrap round caser sheet R against the top surface P1 to press the top surface P1 against the folding flap F5.

In the section where the endless chain 30 provided with the front/rear top guides 30A, 30B is arranged, both sides of the wrap round caser sheet conveying conveyor 16 are engaged with the top surface side flaps F1 and these A top surface side flap folding guide 34A that folds downward is arranged along the top surface P1 of the sheet R for the wrap round caser. Below the top side flap folding guides 34A, bottom side flap folding guides 34B that engage with the bottom side flaps F3 and fold them upward are arranged along the bottom surface P3 of the wrap round caser sheet R. placed. While the sheet R for the wrap-around caser is conveyed through this section, the top/bottom side flaps F1 and F3 are folded to form a substantially box-shaped wrap-around case.

On both sides of the conveying path of the sheet conveying conveyor 16 for the wrap round caser, side flap glue injection nozzles 36 are provided in sections where the top/bottom side flap folding guides 34A and 34B are provided. The side flap glue injection nozzle 36 sprays the adhesive toward the wrap round caser sheet R conveyed on the wrap round caser sheet conveying conveyor 16 to apply the adhesive to the folded front/rear side flaps F2 and F4. Apply glue.

Folded top side flaps F1 and folded top side flaps F1 and Side pressure rollers 42 are arranged to press the bottom side flaps F3 against the front side flaps F2 and rear side flaps F4 coated with adhesive. When the side flaps F1 to F4 are glued by the side pressure rollers 42, the box-shaped packaging of the group of articles G by the wrap-around caser sheet R is completed. In this embodiment, the top surface pressure roller 32 is installed above the section where the side surface pressure roller 42 is arranged.

On the downstream side of the side pressing rollers 42, the side flaps F1 to F4 of the wrap round caser sheet R formed in a box shape are attached to both sides of the conveying path of the wrap round caser sheet conveying conveyor 16 with an adhesive. Crimping plates 44 are provided to support from both sides until the air dries (see FIG. 1).

The configuration of the wrap round caser sheet supply device 60 will be described with reference to FIG.
The magazine 61 has a plurality of side guides 62 arranged parallel to each other, and each side guide 62 is provided with a claw 63 at its lower end. The side guides 62 are arranged at an angle, and a plurality of wrap round caser sheets R are stacked and accommodated in the space surrounded by the side guides 62 . That is, the wrap round caser sheets R are stored in the magazine 61 in an inclined state, and the lowermost wrap round caser sheet R is supported by the claws 63 . The wrap round caser sheet R is determined in the magazine 61 such that the top surface P1 is positioned upward, that is, the folding flap F5 is positioned downward.

Directly below the magazine 61, a sheet discharge conveyor 64 is provided for discharging the wrap round caser sheet R to the sheet transfer section 14 (see FIG. 1). A sheet discharge conveyor 64 has a fixed guide 65 and an endless belt 66 . The fixed guide 65 and the endless belt 66 extend in a direction perpendicular to the article supply conveyor 12 and the wrap round caser sheet transport conveyor 16, and the endless belt 66 is supported by a lower guide 92 which will be described later. Note that the area directly below the magazine 61 on the sheet discharge conveyor 64 is defined as the take-out position in this embodiment.

In the vicinity of the magazine 61, an auxiliary take-out mechanism 70 is provided that adheres to the lowermost wrap round caser sheet R held in the magazine 61 and separates it from the other wrap round caser sheets R. As shown in FIG. The auxiliary take-out mechanism 70 includes a swing arm 72 swingably supported around a support shaft 71, and a suction cup 73 provided at the swing end of the swing arm 72. The swing arm 72 is a drive mechanism. (not shown). The sucker 73 is sucked near the third folding line L3 of the wrap round caser sheet R at the lowermost part in the magazine 61, and the swing arm 72 swings the wrap round caser sheet R. aspirate.

A take-out mechanism (take-out means) 74 is provided below the sheet discharge conveyor 64 . The take-out mechanism 74 includes a swing arm 76 swingably supported around a support shaft 75, and a suction cup 77 provided at the swing end of the swing arm 76. The swing arm 76 is connected to a drive mechanism ( not shown). The sucker 77 is sucked to the bottom surface P3 of the sheet R for the wrap round caser sucked by the auxiliary take-out mechanism 70, and substantially at the same time, the negative pressure of the sucker 73 of the auxiliary take-out mechanism 70 is released, and the wrap round case is pulled. The support sheet R is sucked only by the sucker 77 of the take-out mechanism 74 . Then, the swinging arm 76 swings toward the sheet discharging conveyor 64 side, and the suction plate 77 moves below the sheet discharging conveyor 64, whereby the wrap round caser sheet R is delivered to the sheet discharging conveyor 64. be

The auxiliary take-out mechanism 70 and the take-out mechanism 74 repeat such operations to take out the wrap round caser sheets R one by one from the magazine 61 and move them to the take-out position of the sheet discharge conveyor 64 . At the take-out position, a folding guide 80 is provided outside the fixed guide 65 of the sheet discharge conveyor 64 and below the auxiliary take-out mechanism 70 . The folding guide 80 has a curved surface that bulges in a cylindrical shape toward the movement path side of the sheet R for the wrap round caser that is moved downward by the take-out mechanism 74 . While being moved by the take-out mechanism 74, the wrap round caser sheet R engages with the folding guide 80 and is folded at a substantially right angle along the second folding line L2.

At the take-out position, an engagement guide 81 and a folding pusher 82 are provided outside the other endless belt 66 of the sheet discharge conveyor 64 . The engagement guide 81 is horizontally movable by an engagement guide driving device (engagement guide moving means) 83. The engagement guide 81 is adjacent to the endless belt 66 and positioned within the movement path of the folding flap F5. It reciprocates to and from a retracted position out of the movement path of the flap F5. The engaging guide 81 engages with the lower surface of the folding flap F5 of the wrap round caser sheet R moved by the take-out mechanism 70 in the state of being determined at the projecting position.

The folding pusher 82 is driven by a folding pusher drive mechanism (folding pusher moving means) 84 and is swingable around a pin 85 . The folding pusher 82 can contact the upper surface of the wrap round caser sheet R placed on the sheet discharging conveyor 64, and is set at the pressing position in a state where the folding flap F5 is engaged with the engagement guide 81. and presses from above the region of the rear side face P4 of the wrap round caser sheet R in the vicinity of the fourth folding line L4. When the wrap round caser sheet R is moved from the magazine 61 to the take-out position, the folding pusher 82 swings to an upright state, ie, a standby position to avoid interference with the wrap round caser sheet R. Determined.

The action of the engaging guide 81 and folding pusher 82 will be described with reference to FIGS. When held in the magazine 61, the wrap round caser sheet R is inclined at an angle of about 40° so that the folding flap F5 is positioned downward, as indicated by symbol A. The sheet R for the wrap round caser taken out from the magazine 61 by the action of the auxiliary take-out mechanism 70 and the take-out mechanism 74 is rotated downward by the take-out mechanism 74 so that the angle of inclination is gradually reduced as indicated by symbol B. Move to In this operation, the front side surface P2 is engaged with the folding guide 80, and when placed on the sheet discharge conveyor 64, the front side surface P2 is folded at a second folding line L2 at a substantially right angle to the bottom surface P3 to stand upright. (See Figure 4).

While the wrap round caser sheet R moves to the sheet discharge conveyor 64, ie, the take-out position, the folding pusher 82 is at the standby position, and the engagement guide 81 is engaged before the wrap round caser sheet R reaches the take-out position. position. Therefore, when the wrap round caser sheet R is placed on the sheet discharge conveyor 64, the folding flap F5 is engaged with the engaging guide 81. As shown in FIG. In this state, the folding pusher 82 moves from the waiting position (the state indicated by the dashed line in FIG. 5) to the pressing position (the state indicated by the solid line in FIG. 5), whereby the folding flap F5 is pressed by the folding pusher 82 and the fourth is folded along the folding line L4.

After the folding operation of the folding flap F5 is completed, the engagement guide 81 is separated from the endless belt 66 and set at the retracted position, and the folding pusher 82 returns to the standby position. In this state, the folding flap F5 returns to its original horizontal state as shown in FIG. Then, the L-shaped wrap round caser sheet R is discharged from the take-out position by the sheet discharge conveyor 64 and supplied to the sheet delivery section 14 (see FIG. 1).

The configuration of a wrap-round caser sheet discharge mechanism (wrap-round caser sheet discharge means) 90 for discharging the wrap-round caser sheet R from the take-out position will be described with reference to FIG. The wrap round caser sheet discharge mechanism 90 includes the sheet discharge conveyor 64 described above, an upper guide 91 , a lower lower guide 92 and a lower upper guide 93 . A crosspiece 94 connected to the endless belt 66 and extending in a direction orthogonal to the endless belt 66 is attached to the sheet discharge conveyor 64 . The crosspiece 94 abuts on the bottom surface P3 and the rear side surface P4 of the wrap round caser sheet R placed on the fixed guide 65 (see FIG. 4), and the endless belt 66 is driven to rotate the wrap round caser sheet R. Transfer the sheet R.

The upper guide 91 is composed of a pair of guide members that sandwich and guide the top surface P1 of the wrap round caser sheet R transported by the sheet discharge conveyor 64, and extends from the downstream portion of the sheet discharge conveyor 64 to the sheet transfer section 14 ( 1). The lower lower guide 92 is a member having a U-shaped cross section (see FIG. 4) that covers the underside of the endless belt 66 of the sheet discharge conveyor 64 and extends to the sheet transfer section 14 . The lower upper guide 93 is provided on the downstream side of the sheet discharge conveyor 64 and prevents the bottom surface P3 from rising from the lower lower guide 93 . The lower upper guide 93 is parallel to the lower lower guide 92, and is provided with a gap through which the bottom surface P3 can pass. The slide plate 14P is provided on the extension of the lower upper guide 93. As shown in FIG.

Thus, the wrap round caser sheet discharge mechanism 90 discharges the wrap round caser sheet R, which has been moved to the take-out position by the take-out mechanism 74, in the direction along the folding lines L1 to L4. Before discharging the wrap round caser sheet R from the take-out position, the engaging guide 81 linearly moves from the engaging position to the waiting position, and the folding pusher 82 rotates from the pressing position to the waiting position. Therefore, the sheet R for the wrap round caser is transferred to the delivery section 14 with the folding flap F5 in a substantially horizontal state and in contact with the lower guide 92 .

In this way, since the fourth folding line L4 is preliminarily provided with a crease, the folding member 28 of the wrap round caser 10 folds the wrap round caser sheet R along the fourth folding line L4. The folding flap F5 is folded exactly at the fourth folding line L4. Therefore, the folding flap F5 is reliably folded under the top surface P1 and adhered to the bottom surface of the top surface P1.

It should be noted that it is not essential that the engagement guide 81 is movable by the engagement guide driving device 83, and it may be fixed depending on the length of the folding flap F5 along the folding line L4.

61 magazine 74 take-out mechanism (take-out means)
80 Folding guide 81 Engagement guide 82 Folding pusher 83 Engagement guide driving device (engagement guide moving means)
84 folding pusher drive mechanism (folding pusher moving means)
F5 folding flap L1 first folding line L2 second folding line L3 third folding line L4 fourth folding line P1 top surface P2 front side surface P3 bottom surface P4 rear side surface R sheet for wrap round caser

Claims (1)

A rectangular top surface, a front side surface, a bottom surface, and a rear side surface are partitioned by mutually parallel first, second, and third folding lines, and on the rear side surface opposite to the bottom surface, the third A wrap round caser sheet supply device for supplying a wrap round caser sheet provided with a folding flap through a fourth folding line parallel to the folding line of
a magazine that accommodates the sheet for the wrap-around caser;
a take-out means for taking out the wrap round caser sheet from the magazine and moving it to a take-out position;
a folding guide for folding the wrap round caser sheet along the second folding line by engaging the wrap round caser sheet moved by the take-out means;
an engagement guide that engages with the folding flap of the wrap round caser sheet that is moved by the take-out means;
a folding pusher for pressing an area in the vicinity of the fourth folding line on the rear side surface of the wrap round caser sheet;
Folding pusher movement for moving the folding pusher between a pressing position for pressing the region near the fourth folding line and a standby position for avoiding interference with the wrap round caser sheet moved to the take-out position. means and
wrap round caser sheet discharging means for moving in a direction along the folding line and discharging the wrap round caser sheet that has been moved to the take-out position;
Engagement guide moving means for moving the engagement guide between an engagement position located within the movement path of the folding flap and a retracted position out of the movement path of the folding flap,
By moving the folding pusher from the standby position to the pressing position in a state where the folding flap of the sheet for the wrap round caser moved to the take-out position is engaged with the engaging guide, the folding flap is moved to the above-mentioned position. folding along a fourth folding line ;
A wrap round caser sheet supply device , wherein the engaging guide is moved from the engaging position to a standby position before the sheet for the wrap round caser at the take-out position is discharged .

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