JP5885819B1 - Torso winding device - Google Patents

Abstract

An object of the present invention is to provide a drum winding device capable of winding kraft paper around a packaged body while suppressing the occurrence of wrinkles. The center lower folded plate 303 is slid downward along the rear surface of the packaged body W after being placed in an upright state, so that even when the lower kraft paper Cd is wrinkled. The wrinkles can be reduced by the sliding movement of the central lower folding plate 303. As a result, it is possible to improve the appearance of the product (packaging body) by suppressing the adhesive tape T from being attached in a state where the lower craft paper Cd is wrinkled. [Selection] Figure 3

Description

  The present invention relates to a body winding device, and more particularly to a body winding device that can wind kraft paper around a packaged body while suppressing generation of wrinkles.

  2. Description of the Related Art A packaging device that wraps a rectangular parallelepiped packaged body with kraft paper on six sides (so-called caramel packaging) is known. In this type of packaging device, after winding the kraft paper around the four sides of the packaged body, the side surface folding is performed to fold the ear end of the kraft paper on the remaining two sides of the packaged body, thereby packaging the 6-sided package. To complete.

  In Patent Document 1, with respect to body winding, a workpiece W (a body to be packaged) is pushed into a vertically hanging kraft paper, and the kraft paper is wound around three surfaces of the front surface, the upper surface, and the lower surface of the workpiece W. The lower folding plate 2 and the upper folding plate 1 which are members are moved up and down along the rear surface of the package body, respectively, so that both ends of the kraft paper are along the rear surface of the work W, and the kraft paper is placed on the package body. A technique for winding on four sides is disclosed.

JP-A-1-226512 (for example, FIG. 1)

  However, as in Patent Document 1 described above, when both ends of the kraft paper are placed along the rear surface of the workpiece W (packaged body), the lower folding plate 2 and the upper folding plate 1 which are plate-like members are attached to the workpiece W. In the configuration in which the vertical movement is performed along the rear surface, there is a problem that the resistance between the folding plates 1 and 2 and the kraft paper increases, and the kraft paper is easily damaged.

  On the other hand, as a result of intensive studies to solve the above-described problems, the applicant of the present application wound a kraft paper around the three surfaces of the packaged body, and then attached plate-like members (lower folded plate and upper folded plate). By turning, the two ends of the kraft paper were folded back, and the body was wound around the rear surface of the packaged body (unknown at the time of this application).

  However, by rotating the plate-shaped member, the kraft paper can be folded back and along the rear surface of the packaged body, so that the kraft paper can be prevented from being damaged, but the folded kraft paper can be easily wrinkled. found. If the adhesive tape is attached to the kraft paper with wrinkles, the appearance of the product (packaging body) is damaged.

  The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a drum winding device capable of winding kraft paper around a packaged body while suppressing the occurrence of wrinkles.

Means for Solving the Problems and Effects of the Invention

  According to the trunk winding device according to claim 1, since the lower folding plate and the upper folding plate that fold the kraft paper into the rear surface of the packaged body are provided by being turned upside down or inverted with rotation, the packaged body After wrapping the kraft paper around the front, top and bottom surfaces of the paper, turn the lower and upper folded plates to the upright or inverted state, respectively, while suppressing damage to the kraft paper and covering both ends You can follow the back of your body.

  In this case, since the lower folded plate is erected, it is slid along the rear surface of the package body toward at least one of the upper and lower sides, so even if the lower kraft paper is wrinkled The wrinkles can be reduced by sliding the lower folding plate. As a result, it is possible to improve the appearance of the product (packaging body) by suppressing the adhesive tape from being attached in a state where the lower kraft paper is wrinkled.

  According to the body winding device of the second aspect, in addition to the effect produced by the body winding device of the first aspect, the sliding movement direction of the lower folding plate is set downward, so that the lower folding plate is slid and moved downward 1 This operation can be combined with two operations: an operation for reducing wrinkles of the lower kraft paper and an operation for opening an area for attaching the adhesive tape. As a result, compared to the case where these two operations are performed separately, the process for reducing the wrinkle of the kraft paper can be quickly transferred to the process for applying the adhesive tape, and the time lag can be reduced. As a result, production efficiency can be improved accordingly.

  According to the body winding device according to claim 3, in addition to the effect produced by the body winding device according to claim 2, when the lower folded plate is brought into an upright state with the rotation, the rotation center of the rotation is provided. Therefore, the lower kraft paper can be folded and extended along the rear surface of the packaged body while being stretched to the rotating front end side. As a result, wrinkles on the lower kraft paper can be suppressed.

  According to the trunk winding device of the fourth aspect, in addition to the effect produced by the trunk winding device according to any one of the first to third aspects, the upper folded plate is inverted after the lower folded plate is raised, On the rear side of the package, the end of the upper kraft paper overlaps the end of the lower kraft paper from the outside, so that the end of the lower kraft paper (the part above the lower folding plate) hangs down. Can be suppressed. That is, until the adhesive tape is affixed, the end of the lower kraft paper can be maintained in an upright state, so that the adhesive tape is prevented from being affixed in a wrinkled state on the lower kraft paper, The appearance of the product (packaging body) can be secured.

It is a side surface schematic diagram showing the whole composition of a packaging device typically. (A) is a schematic side view of the upper folded plate, the central lower folded plate, and the lateral lower folded plate in the horizontal posture, and (b) is the upper folded in the inverted posture or the standing posture. It is a side surface schematic diagram of a board, a center lower folded board, and a side lower folded board. FIG. 2A is a schematic front view of the upper folded plate, the central lower folded plate, and the lateral lower folded plate in the direction of arrow IIIa in FIG. 2B, and FIG. It is a front schematic diagram of the upper folded board, the center lower folded board, and the side lower folded board in the moved state. (A) is an upper surface schematic diagram of a holding plate and a backing plate, (b) is a schematic front view of the holding plate and the backing plate in the direction of arrow IVb in FIG. 4 (a). (A) is a schematic top view of the moving device on the forward path, (b) is a schematic top view of the moving device on the return path, and (c) is a moving device as viewed in the direction of the arrow Vc in FIG. 5 (b). FIG. (A) is a partial enlarged side schematic view of the packaging device in a state where the lifting platform is disposed at the lowered position, and (b) is a partial enlarged side schematic view of the packaging device in a state where the pusher is extended. (A) is the side surface schematic diagram of the trunk winding apparatus in the process of folding a lower kraft paper with a center lower fold board and a side lower fold board, (b) is the process of cut | disconnecting an upper kraft paper with a cutting device. It is a side surface schematic diagram of the trunk winding apparatus in. (A) is a side surface schematic diagram of the trunk winding apparatus in the process of affixing an adhesive tape along the overlapping part of an upper kraft paper and a lower kraft paper by an applicator, and (b) is an adhesive tape by an applicator. It is a front schematic diagram of the trunk winding apparatus in the state which affixed on the overlap part of upper kraft paper and lower kraft paper. It is an upper surface schematic diagram of a side folding device. (A) is a schematic front view of the side folding device as viewed in the direction of arrow Xa in FIG. 9, and (b) is a schematic rear view of the side folding device as viewed in the direction of arrow Xb in FIG. (A) is a side surface schematic diagram of a side surface folding device, (b) is a top surface schematic diagram of a side surface folding device. (A) is a side surface schematic diagram of a side surface folding device, (b) is a top surface schematic diagram of a side surface folding device. (A) is a side surface schematic diagram of a side surface folding device, (b) is a top surface schematic diagram of a side surface folding device. (A) And (b) is a side surface schematic diagram of a side folding device.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic side view schematically illustrating the overall configuration of the packaging device 1.

  In FIG. 1, the conveyance path Y of the package W is schematically illustrated by an arrow formed by a one-dot chain line, and the body winding device 300 and the side folding device 400 are respectively illustrated by a two-dot chain line. In addition, arrows UD, LR, and FB in FIG. 1 indicate the up-down direction, the left-right direction, and the front-rear direction of the packaging device 1, and the same applies to the following drawings.

  The packaging device 1 is a device for wrapping a packaged body W on six sides (so-called caramel packaging) with kraft paper C fed out from a base paper roll R, and includes a kraft paper supply device 100, a packaged material supply device 200, The body winding device 300, the side folding device 400, and the feeding device 500 are mainly provided.

  In the present embodiment, the packaged body W is a toilet roll. Specifically, the packaged body W is a package (super, etc.) in which a plurality of toilet rolls (for example, a total of 18 vertical 3 pieces x 2 horizontal pieces stacked in three heights) are wrapped with a transparent film. In the form of a package that is sold to general consumers at a general store) and arranged in a substantially rectangular parallelepiped shape having six sides (see, for example, FIG. 12 of JP-A-2002-166908). .

  In the following description, each of the six surfaces of the package W is referred to as “upper surface, lower surface, front surface, rear surface, and left and right side surfaces”. The upper surface and the lower surface are surfaces facing the arrow U direction and the arrow D direction, respectively, the front surface and the rear surface are surfaces facing the arrow F direction and the arrow B direction, respectively, and the left and right side surfaces are respectively directed to the arrow LR direction. It is the surface to face.

  The kraft paper supply device 100 hangs down the kraft paper C fed from the base paper roll R at a crossing position (see FIG. 6A) that crosses the transport path Y of the package W up and down (arrow UD direction). And an upper guide member 101 and a lower guide member 102 located on the upstream side (arrow B direction side) of the body winding device 300, and a feeding guide disposed facing the lower guide member 102 A detection sensor (detecting the remaining amount of the kraft paper C to be wound on the base paper roll R, and the member 103, the spraying device 104 disposed on the inlet side (arrow U direction side) of the feeding guide member 103 (Not shown).

  The upper guide member 101 and the lower guide member 102 face the outer surface of the kraft paper that hangs down in the transverse position (the surface that is the outer peripheral side of the base paper roll R), and move up and down the transport path Y of the package W. It is arrange | positioned in the position pinched | interposed into. The spacing between the upper guide member 101 and the lower guide member 102 in the vertical direction (arrow UD direction) is made larger than the height dimension of the package body W (arrow UD direction dimension). The body W can pass between the upper guide member 101 and the lower guide member 102 facing each other (see FIGS. 6A and 6B).

  The feeding guide member 103 is a member for guiding the inner surface of the kraft paper C (the surface on the inner peripheral side of the base paper roll R and the concave surface by the curl), and the guide surface 103a is formed as a concave surface that is inclined downward (going in the direction of arrow D) as it goes in the transport path Y direction (arrow F direction) of the package W, and is curved in an arc shape and faces away from the concave surface of the kraft paper C. The

  By forming the guide surface 103a in such a shape, when the lower end side of the kraft paper C hanging down from above is guided to the guide surface 103a (see FIG. 6A), the craft paper C It is possible to suppress the formation of the starting point of folds and wrinkles, and as a result, it is possible to suppress the appearance of the product (packaging body) from being damaged as it is in the subsequent body winding process or the side folding process.

  The spraying device 104 is a device for spraying compressed air to the kraft paper C fed toward the feeding guide member 103, and is long in the width direction (arrow LR direction) of the kraft paper C. A tubular member 104a arranged along the direction, a plurality of ejection holes 104b arranged along the longitudinal direction of the tubular member 104a and communicating with the internal space of the tubular member 104a, and the tubular member A tank (not shown) for holding compressed air to be supplied to the internal space of 104a and a throttle valve (not shown) interposed in the supply path from the tank to the tubular member 104a are mainly used. In addition, a discharge amount of compressed air corresponding to the opening amount of the throttle valve can be sprayed onto the kraft paper C from the ejection hole 104b.

  The packaged body supply apparatus 200 is an apparatus for supplying the packaged body W from a direction orthogonal to the transport path Y, and includes a lifting table 201 formed to be movable up and down (in the direction of the arrow UD). , And a mounting means (not shown) for mounting the package body W on the lift 201. The elevator base 201 is lowered from the raised position shown in FIG. 1 to the lowered position (see FIG. 6A), so that the package body W is supplied to a position between the pusher P and the body winding device 300.

  The package body W supplied between the pusher P and the body winding device 300 by the package body supply apparatus 200 is pushed along the transport path Y by the extension operation of the pusher P, and is placed on the mounting table 301 of the body winding device 300. Placed. In this case, the packaged body W previously placed on the mounting table 301 of the trunk winding device 300 (that is, the packaged body W in which the trunk winding has been completed) is newly pushed by the pusher P. And is conveyed to the side folding device 400 (see FIG. 6B).

  The body winding device 300 winds the kraft paper C around the four surfaces (front surface, upper surface, lower surface, and rear surface) of the package body W and sticks the end of the kraft paper C with the adhesive tape T, so that the package body W The side folding device 400 is a device for winding the kraft paper C around the four sides of the wrapping paper W on the four sides of the wrapping paper W (arrow L). -R direction) A device for folding the kraft paper C into the package body W by folding the ear ends of the kraft paper C into the remaining two surfaces (left and right side surfaces) of the package body W. It is. Detailed configurations of the body winding device 300 and the package body 400 will be described later.

  The delivery device 500 uses a belt conveyor 501 to transfer a product (packaging body) in which kraft paper C is wound on six sides via a body winding device 300 and a side folding device 400 to the next process (for example, the side folding portion is an adhesive tape T). It is a device for sending out to the sticking process or inspection process).

  Next, a detailed configuration of the body winding device 300 will be described with reference to FIGS. First, with reference to FIG.2 and FIG.3, the upper folded board 302, the center lower folded board 303, and the side lower folded board 304 of each element which comprises the trunk winding apparatus 300 are demonstrated.

  FIG. 2A is a schematic side view of the upper folded plate 302, the central lower folded plate 303, and the side lower folded plate 304 in a horizontal posture, and FIG. 2B is an inverted posture or an upright posture. It is a side surface schematic diagram of the upper folding plate 302, the center lower folding plate 303, and the side lower folding plate 304 in the state made into. 3A is a schematic front view of the upper folded plate 302, the central lower folded plate 303, and the side lower folded plate 304 as viewed in the direction of the arrow IIIa in FIG. 2B, and FIG. FIG. 6 is a schematic front view of the upper folded plate 302, the central lower folded plate 303, and the side lower folded plate 304 in a state where the central lower folded plate 303 is slid downward.

  2 and 3, the link mechanisms 302b, 303b, and 304b are schematically illustrated by two-dot chain lines. Further, in each of the following drawings, for convenience of explanation, a portion of the kraft paper C extending along the upper surface of the package body W and extending rearward (in the direction of arrow B) from the rear surface of the package body W is referred to as “upper craft paper”. The portion of the kraft paper C that extends along the lower surface of the package body W and extends rearward (in the direction of arrow B) along the lower surface of the package body W is referred to as “lower craft paper Cd”.

  As shown in FIGS. 2 and 3, the body winding device 300 includes a placing table 301, and upper kraft paper Cu and a rear surface (a surface on the arrow B direction side) of the packaging body W placed on the placing table 301. The upper folding plate 302, the central lower folding plate 303 and the side lower folding plate 304 for folding the lower kraft paper Cd, and the upper folding plate 302, the central lower folding plate 303 and the side lower folding plate 304 are rotated. Rotating cylinders 302a, 303a, and 304a that generate a driving force for movement, and the driving forces of the rotating cylinders 302a, 303a, and 304a are applied to the upper folding plate 302, the central lower folding plate 303, and the lateral lower folding plate 304. Link mechanisms 302b, 303b, and 304b for transmitting, respectively, and a slide cylinder 303c interposed between the link mechanism 303b and the central lower folding plate 303 are provided.

  The upper folded plate 302 is a rectangular horizontally long flat plate body that is long in the width direction (arrow LR direction) of the kraft paper C, and the upper edge portion is pivotally supported by the rotation shaft, so Rotation between a horizontal posture (see FIG. 2 (a)) extending in the direction of arrow B and an inverted posture (see FIG. 2 (b)) extending in the direction of arrow D from the rotation shaft and facing the rear surface of the package W. It is possible.

  That is, the driving force of the rotating cylinder 302a is transmitted to the upper folded plate 302 via the link mechanism 302b, and the upper folded plate 302 in the horizontal posture is turned into the inverted posture by turning, and the package W By facing the rear surface, the upper kraft paper Cu can be folded inward (the lower side in FIG. 2 (a)) and along the rear surface of the packaged body W.

  The center lower folded plate 303 and the side lower folded plate 304 are rectangular horizontally long flat plates arranged in a line along the width direction (arrow LR direction) of the kraft paper C, and the lower edge portion. Is supported by the rotation shaft so that the horizontal posture (see FIG. 2A) extending from the rotation shaft in the arrow B direction and the rear surface of the packaging body W extending from the rotation shaft in the arrow U direction. It is possible to rotate between the standing posture (see FIG. 2B).

  That is, the driving force of the rotating cylinders 303a and 304a is transmitted to the central lower folding plate 303 and the side lower folding plate 304 via the link mechanisms 303b and 304b, respectively, and the central lower folding plate 303 and the side in the horizontal posture state. The lower folding plate 304 is brought into a standing posture by turning and faces the rear surface of the packaged body W, whereby the lower kraft paper Cd is folded inward (upper side in FIG. 2A) to be covered. Along the rear surface of the package W.

  As shown in FIG. 3, in the present embodiment, the horizontal width dimension (the dimension in the direction of the arrow LR) of the upper folded plate 302 is set to be larger than the horizontal width dimension of the package W, and the upper folded plate 302 Is formed so as to project outward (arrow L direction or arrow R direction) from the left and right side surfaces of the packaged body W. Further, the lateral width of the laterally folded plate 304 is set to a size such that the laterally folded plate 304 straddles the left and right side surfaces of the packaged body W in the arrow LR direction.

  Here, the central lower folding plate 303 is formed such that the distance from the rotation shaft can be changed by driving (extending / contracting operation) of the sliding cylinder 303c. Specifically, the sliding cylinder 303c in the present embodiment is shortened in a state where the central lower folding plate 303 is in a horizontal posture (see FIG. 2A), and the central lower folding plate 303 stands up from the horizontal posture. When it is rotated toward the posture (see FIG. 2B), it is gradually extended.

  The sliding cylinder 303c is in a state where the central lower folding plate 303 is in a standing posture (that is, a state in which the lower kraft paper Cd is placed along the rear surface of the packaged body W, see FIG. 3A). Later, it is shortened, and the center lower folded plate 303 is slid downward (in the direction of arrow D) along the rear surface of the packaged body W (see FIG. 3B).

  It should be noted that immediately after the central lower folding plate 303 is changed from the horizontal posture to the standing posture (see FIG. 3A), the upper edge of the central lower folding plate 303 is above the side lower folding plate 304. It arrange | positions in the position which becomes upper than the edge (arrow U direction). On the other hand, when the central lower folding plate 303 is slid downward by shortening the sliding cylinder 303c (see FIG. 3B), the upper edge of the central lower folding plate 303 is the side lower folding plate 304. It is arranged at a position in the height direction (arrow UD direction) substantially the same as the upper edge.

  Next, with reference to FIG. 4, the holding plate 305 and the backing plate 306 among the elements constituting the body winding device 300 will be described.

  4A is a schematic top view of the holding plate 305 and the backing plate 306, and FIG. 4B is a front view of the holding plate 305 and the backing plate 306 when viewed in the direction of arrow IVb in FIG. 4A. It is a schematic diagram. In FIGS. 4A and 4B, the holding plate 305 and the backing plate 306 retracted to the retracted position are indicated by solid lines, and the holding plate 305 and the backing plate disposed at the holding position and the backing position. Reference numerals 306 are respectively shown by broken lines.

  As shown in FIGS. 4A and 4B, the body winding device 300 includes a holding plate 305, a backing plate 306 connected to the holding plate 305 via a connecting member, the holding plate 305, A holding cylinder 305a that generates a driving force for moving the backing plate 306 toward or away from the packaged body W.

  The holding plate 305 is formed as a rectangular plate having a rectangular shape in front view slightly smaller than the left and right side surfaces of the package body W, and is disposed in a posture parallel to the left and right side surfaces of the package body W. The plate 306 is formed as a rectangular flat plate having a slightly smaller outer shape than the ear ends of the upper kraft paper Cu and the lower kraft paper Cd folded on the rear surface of the package W. W is disposed in a posture parallel to the rear surface of W.

  Therefore, by moving the holding plate 305 and the backing plate 306 by extension of the holding cylinder 305a, the holding plate 305 is disposed at the holding position as shown by broken lines in FIGS. 4 (a) and 4 (b). In addition, the left and right side surfaces of the packaged body W can be pressed from both sides, and as a result, the packaged body W can be held so as not to shift during the body winding.

  Further, by arranging the backing plate 306 at the backing position and arranging the backing plate 306 side by side on the rear surface of the package W, the upper folding plate 302 and the side lower folding plate 304 can be used for the upper craft. The backing plate 306 can function as a backing when folding the paper Cu and the lower kraft paper Cd inward, and as a result, the ears of the upper kraft paper Cu and the lower kraft paper Cd during the body winding. It is possible to suppress wrinkles at the ends.

  Next, with reference to FIG. 5, the moving device 310, the cutting device 320, and the pasting device 330 among the elements constituting the body winding device 300 will be described.

  5A is a schematic top view of the moving device 310 on the forward path, FIG. 5B is a schematic top view of the moving device 310 on the return path, and FIG. 5C is a schematic diagram of FIG. It is a side view of the moving apparatus 310 in the arrow Vc direction view.

  As shown in FIG. 5A to FIG. 5C, the body winding device 300 includes a moving device 310 having a moving table 314, and a cutting device 320 and a pasting device disposed on the moving table 314 of the moving device 310. 330.

  The moving device 310 is formed with a base member 312 having a guide groove 311 formed on its upper surface, and is reciprocally moved along the width direction (arrow LR direction) of the kraft paper C while being embedded in the base member 312. A displacement mechanism (not shown), and a moving table 314 that is reciprocally moved along the width direction of the kraft paper C according to the displacement of the displacement mechanism by being coupled to the displacement mechanism via a coupling member 313, A guide bar 315 is provided mainly having an upper end side inserted through the opening 314 a of the moving table 314 and a lower end side guided along the guide groove 311 of the base member 312.

  Note that the moving table 314 of the moving device 310 has an initial position at an end on the arrow L direction side (left side in FIG. 5A) in the movable range, and an arrow R direction side (right side in FIG. 5A) in the movable range. The end is the folding position in the reciprocating movement. In the present embodiment, for convenience of explanation, a path along which the moving table 314 moves from the initial position in the arrow R direction (right direction in FIG. 5A) is referred to as an “outward path”, and the moving table 314 moves from the return position to the arrow L direction. A route moving in the left direction (FIG. 5A) is referred to as a “return route”.

  The guide groove 311 includes an outward guide groove 311a extending linearly along the width direction of the other end craft paper C of the guide bar 315, and an arrow F direction (mounted on the mounting table 301) from the middle of the outward guide groove 311a. The return path first inclined groove 311b1 that branches while being inclined toward the packaged body W (see FIG. 1), and extends from the end of the return path first inclined groove 311b1 to a straight line parallel to the forward path guide groove 311a. A return straight groove 311b2 provided, and a return second inclined groove 311b3 extending while inclining toward the arrow B from the end of the return straight groove 311b2 and joining in the middle of the forward guide groove 311a.

  In addition, a regulating plate 316 is rotatably disposed at a branch portion between the forward path guide groove 311a and the return path first inclined groove 311b1. The restriction plate 316 is formed to be rotatable about one end side (left side in FIG. 5A). When the restriction plate 316 is rotated in one direction, the outward guide groove 311a is blocked and the return first inclined groove 311b1 is opened. However, when it is rotated in the other direction, the forward guide groove 311a is opened and the return first inclined groove 311b1 is closed.

  In this case, a biasing force of a biasing spring (not shown) is applied to the restricting plate 316, and the biasing force blocks the forward guide groove 311a and opens the return first inclined groove 311b1 ( The regulation plate 316 is maintained in the state shown in FIG.

  Therefore, when the guide bar 315 moves in the direction of the arrow R toward the restricting plate 316 through the outward guide groove 311a, the guide plate 315 is expanded by pushing the restricting plate 316 against the urging force of the urging spring. On the other hand, when the guide bar 315 moves in the direction of the arrow L toward the restricting plate 316 toward the restricting plate 316 while the guide rod 315 moves, the moving direction of the guide rod 315 is determined by the restricting plate 316 to the return first inclined groove 311b1. Is regulated (guided).

  The cutting device 320 is a device for cutting the upper kraft paper Cu in a state where the kraft paper C is wound around the front surface, the upper surface, and the lower surface of the packaged body W (see FIG. 7B). A rotary blade 321 having a cutting edge and a drive device (not shown) that applies a rotational driving force to the rotary blade 321 are provided on a moving table 314 of the moving device 310.

  The rotary blade 321 is disposed in a posture in which the rotation axis thereof is aligned with the direction (arrow FB direction) of the transport path Y (see FIG. 1) of the packaged body W, and the moving table 314 moves on the forward path. The upper kraft paper Cu is disposed at a height position where it can be cut. However, in a state in which the moving device 310 is disposed at the initial position, the rotary blade 321 is disposed at a position (a position where cutting is impossible) that is outward (in the direction of the arrow L) from the side edge of the kraft paper C.

  The sticking device 330 is a device for sticking an overlapping portion of the upper kraft paper Cu and the lower kraft paper Cd with the adhesive tape T (see FIG. 8), and a holding shaft 331 for holding the tape reel TR; A press-contact arm 332 that is formed so as to be movable toward and away from the rear surface of the packaged body W and presses the adhesive tape T against the above-mentioned overlapping portion on the tip side by the close-up operation, and the tip side of the press-contact arm 332 And a guide roller 333 for handling the adhesive tape T with the adhesive surface facing forward (in the direction of arrow F), and a cutting mechanism (not shown) for cutting the adhesive tape T at the distal end side of the press-contact arm 332 when the attachment is completed. And).

  An upper end of a guide bar 315 protruding through the opening 314 a of the moving table 314 is connected to the pressure arm 332. Therefore, when the moving table 314 reciprocates along the width direction (arrow LR direction) of the kraft paper C, the press contact arm 332 is packaged via the guide rod 315 guided along the guide groove 311. The rear surface of the body W can be approached or separated.

  More specifically, while the moving table 314 is moved in the outward path from the initial position toward the turn-back position, the guide rod 315 is guided along the outward path guide groove 311a, so that the press-contact arm 332 moves its tip side. The posture is retracted backward (in the direction of arrow B) (see FIG. 5A). In this posture, the distal end side of the pressure contact arm 332 is separated from the above-described overlapping portion by a predetermined distance.

  On the other hand, while the moving table 314 is moved along the return path from the return position toward the initial position, the guide rod 315 is guided along the return path first inclined groove 311b1, so that the distal end side of the press contact arm 332 gradually moves forward. When the guide rod 315 is moved forward (in the direction of arrow F) and the guide rod 315 reaches the return straight groove 311b2, the adhesive tape T is pressed against the above-described overlapping portion by the tip side of the pressing arm 332 (FIG. 5B). )reference). Thereby, the adhesive tape T is affixed on the overlap part mentioned above in connection with the movement table 314 being moved an outward path.

  After that, the guide rod 315 is guided along the return second inclined groove 311b3, whereby the distal end side of the pressure contact arm 332 is gradually retracted backward (in the direction of arrow B), and the guide rod 315 is moved to the forward guide groove 311a. By being guided along, the front end side of the press-contact arm 332 is retracted backward.

  Next, referring to FIG. 6 to FIG. 8, the body winding process until the kraft paper C is wound on the package body W by the kraft paper supply device 100, the package body supply device 200, and the body winding device 300 of the packaging device 1. Will be described. The description will be given with reference to FIGS. 1 to 5 as appropriate.

  FIG. 6A is a partially enlarged side schematic view of the packaging device 1 in a state where the lifting platform 201 is disposed at the lowered position, and FIG. 6B is a diagram of the packaging device 1 in a state where the pusher P is extended. It is a partial expanded side surface schematic diagram. In FIG. 6A and FIG. 6B, the body winding device 300 illustrated by a two-dot chain line includes a moving device 310, a cutting device 320, and a pasting device 330.

  Here, in the state shown in FIG. 1, the supply of the kraft paper C by the kraft paper supply device 100 is in a standby state, the lifting / lowering table 201 of the packaged body supply device 200 is arranged at the raised position, and the mounting table of the body winding device 300 301 shows a state in which a packaged body W around which a kraft paper C is wound is placed. That is, FIG. 1 corresponds to a state in which one cycle of the drum winding process by the kraft paper supply device 100, the package supply device 200, and the drum winding device 300 is completed.

  When performing the body winding, the kraft paper supply device 100 is driven from the state shown in FIG. 1, and the kraft paper C is fed out from the base paper roll R by a predetermined amount and supplied downward, and the lifting table 201 of the package supply device 200 is also provided. Is lowered and placed in the lowered position. As a result, as shown in FIG. 6A, the kraft paper C hangs down to a crossing position where the conveyance path Y of the packaged body W crosses up and down (arrow UD direction), and the packaged body W is pushed by the pusher. Arranged in front of P (arrow F direction side).

  In this case, the kraft paper C fed from the base paper roll R has curl. Therefore, when the lower end side of the kraft paper C is curled by the curl, when the kraft paper C is fed from the upper side to the lower side, the lower end of the kraft paper C is separated from the feeding path or along the feeding path. It does not proceed smoothly and clogging is likely to occur.

  On the other hand, in this embodiment, the spraying device 104 is disposed at the entrance of the feeding guide member 103. The spraying device 104 is formed with the blowing hole 104b facing forward (in the direction of the arrow F), that is, by curling the kraft paper C fed toward the guide surface 103a of the feeding guide member 103. Since compressed air can be sprayed from the inner side of the concave kraft paper C (the surface on the inner peripheral side in the base paper roll R), curling due to curling on the lower end side of the kraft paper C can be corrected. it can. As a result, the lower end side of the kraft paper C can be smoothly advanced along the guide surface 103a of the feeding guide member 103, and clogging of the kraft paper C can be suppressed.

  In the present embodiment, the spraying of the compressed air onto the kraft paper C by the spraying device 104 is performed only at an initial stage when the leading end of the kraft paper C passes through the entrance of the feeding guide member 103 (in front of the ejection hole 104b). Instead, the operation is continued until the operation of feeding out the kraft paper C by the kraft paper supply apparatus 100 is completed (that is, until the kraft paper C is arranged at the transverse position shown in FIG. 6A). Is called.

  Thereby, from the exit side (Fig. 6 (a) lower right side) of the guide surface 103a, the compressed air flows along the guide surface 103a of the feeding guide member 103 and the inner surface (concave surface) of the kraft paper C. Compressed air can be discharged. As a result, even if there is a strong curl in the kraft paper C, the kraft paper C is fed as shown in FIG. It can be along the guide surface 103a of the member 103.

  The curl caused by the curl of the kraft paper C is in a different state depending on its position in the width direction (arrow LR direction). According to this embodiment, the plurality of ejection holes 104b are formed along the longitudinal direction of the tubular member 104a. Thus, the characteristics (for example, inner diameter, direction, flow path length, etc.) of each of the ejection holes 104b can be made different according to the position in the width direction of the kraft paper C to be sprayed. Thereby, since the compressed air of an appropriate state can be sprayed according to the width direction position (namely, curl state) of the kraft paper C, the curl due to the curl of the kraft paper C can be corrected more appropriately. Can do.

  In the present embodiment, the inner diameters of the plurality of ejection holes 104b at one end and the other end in the longitudinal direction of the tubular member 104a are made smaller than the inner diameters of the remaining ejection holes 104b at the center in the longitudinal direction. However, it is naturally possible to make all the ejection holes 104b have the same characteristics.

  Here, the kraft paper C fed out from the base paper roll R starts to be affected by curl after the remaining amount of the base paper roll R reaches a predetermined amount. On the other hand, the spraying device 104 detects the remaining amount of the kraft paper C to be wound around the base paper roll R by the detection sensor described above, and according to the residual amount of the base paper roll R detected by the detection sensor, By changing the opening amount of the throttle valve described above, it is possible to change the ejection state of the compressed air.

  As a result, compressed air can be sprayed to the lower end side of the kraft paper C in a jetting state corresponding to the curl state caused by the curl so that the kraft paper can be fed from the initial stage to the final stage of the kraft paper C fed from the base paper roll R. It is possible to suppress clogging of the kraft paper C by suppressing the lower end side of C from being detached from the feeding guide member 103 and not proceeding along the guide surface 103a.

  In this embodiment, until the remaining amount of the base paper roll R reaches a predetermined amount (for example, 60%), the throttle valve is closed to stop the blowing of compressed air, while the remaining amount is limited. After reaching the fixed amount, the throttle valve is opened and the compressed air is sprayed.

  In the present embodiment, a display device (not shown) that displays a detection result (remaining amount of the base paper roll R) by the detection sensor is provided, and the throttle valve is opened and closed based on the detection result displayed on the display device. Is performed manually by the operator. However, an actuator device that changes the opening / closing amount of the throttle valve may be provided, and the actuator device may be driven and controlled by the control means according to the detection result of the detection sensor to change the opening / closing amount of the throttle valve. .

  As shown in FIG. 6A, after the kraft paper C is arranged at the transverse position, the pusher P is extended. As a result, the package body W is pushed along the transport path Y (in the direction of arrow F) against the kraft paper C that traverses the transport path Y up and down, and as shown in FIG. Can be mounted on the mounting table 301 in a state where the kraft paper C is wound around the three surfaces of the front surface, the upper surface, and the lower surface.

  The packaged body W previously mounted on the mounting table 301 (the packaged body W in which the body winding has already been completed) is transported by the packaged body W newly pushed by the pusher P (the arrow Y (arrow)). F direction) and conveyed to the side folding device 400 by the belt conveyor 501 (see FIG. 6). Further, after the shortening operation of the pusher P, the packaged body supply apparatus 200 is raised to the raised position and receives the next packaged body W (see FIG. 1).

  As shown in FIG. 6B, after the kraft paper C is wound around the three surfaces of the package W, the holding plate 305 and the backing plate 306 are moved by the extension of the holding cylinder 305a. And the backing plate 306 are disposed at the holding position and the backing position, respectively (see the state indicated by the broken lines in FIGS. 4A and 4B).

  Thus, as described above, the left and right side surfaces of the package body W can be pressed from both sides by the holding plates 305 to hold the package body W, and the backing plate 306 is connected to the rear surface of the package body W. Can be provided side by side to form a backing for folding the upper and lower kraft paper Cu, Cd inward.

  FIG. 7A is a schematic side view of the body winding device 300 in the process of folding the lower kraft paper Cd by the center lower folding plate 303 and the side lower folding plate 304, and FIG. 7B is a cutting device 320. It is a side surface schematic diagram of the trunk winding apparatus 300 in the process of cut | disconnecting the upper side kraft paper Cu by this. In FIG. 7A, illustration of the moving device 310 (the cutting device 320 and the pasting device 330) arranged at the initial position is omitted.

  As described above, after the holding plate 305 and the backing plate 306 are arranged at the holding position and the backing position, the central lower folding plate 303 and the side lower folding plate 304 are turned upright from the horizontal posture to be covered. It is made to face the rear surface of the package W. Thereby, as shown to Fig.7 (a), the lower kraft paper Cd can be folded inward and can be made to follow the back surface of the to-be-packaged body W. FIG.

  In this case, in this embodiment, as described above, in the state where the central lower folding plate 303 is in the horizontal posture, the sliding cylinder 303c is shortened, and the central lower folding plate 303 is rotated from the horizontal posture to the standing posture. When this is done, the sliding cylinder 303c is gradually extended (see FIGS. 3A and 3B).

  Accordingly, the central lower folding plate 303 can be rotated while being slid in a direction away from the rotation center (that is, while sliding with respect to the lower kraft paper Cd). The lower kraft paper Cd, which is lifted upward (in the direction of the arrow U) by the lower folding plate 303 and folded into the rear surface of the package W, is folded while being stretched to the rotating front end side by the sliding movement of the central lower folding plate 303. Can do. That is, it is difficult to sag the lower kraft paper Cd, and it can be placed along the rear surface of the packaged body W in a tense state, and as a result, wrinkles can be suppressed.

  As shown in FIG. 7 (a), after the central lower folding plate 303 and the side lower folding plate 304 are in an upright state and the lower kraft paper Cd is folded into the rear surface of the package W, the moving device 310 is moved. The forward path that is the path from the initial position to the turn-back position is moved. Thereby, as shown in FIG.7 (b), the upper kraft paper Cu is cut | disconnected along the width direction (arrow LR direction) with the rotary blade 321 of the cutting device 320. FIG. The moving member 310 stands by at the turn-back position (the end point of the forward path and the start point of the return path) until the start of the step of attaching the adhesive tape T described later.

  When the cutting of the upper kraft paper Cu by the cutting device 320 is completed, almost simultaneously with the completion of the cutting (that is, without waiting for the moving device 310 to reach the folding position), the upper folding plate 302 is moved from the horizontal posture. It is made to face the back surface of the packaged body W as an inverted posture by turning. Thereby, the upper kraft paper Cu can be folded inward and can be made to follow the rear surface of the to-be-packaged body W (refer FIG.2 (b)).

  As described above, in this embodiment, the lower kraft paper Cd is folded first by the central lower folding plate 303 and the side lower folding plate 304, and then the upper kraft paper Cu is folded by the upper folding plate 302. Therefore, on the rear surface of the package W, the end (lower end) of the upper kraft paper Cu can be overlapped with the end (upper end) of the lower kraft paper Cd from the outside (FIG. 2B). (See enlarged view of).

  Thereby, it can suppress that the part which is an edge part (upper end side) of the lower kraft paper Cd and is higher than the upper edge of the center lower folding board 303 and the side lower folding board 304 hangs down. That is, the end of the lower kraft paper Cd can be maintained in an upright state until the adhesive tape T is applied, so that the adhesive tape T can be applied in a state where the lower kraft paper Cd is wrinkled. It is possible to suppress the appearance of the product (packaging body).

  As will be described later, in the present embodiment, the center lower folded plate 303 is slid downward (in the direction of arrow D) after the standing posture (see FIGS. 3A and 3B). While the lower kraft paper Cd has an effect that it is difficult to wrinkle the lower kraft paper Cd, the downward sliding movement of the lower central fold board 303 causes the upper edge of the lower kraft paper Cd to move upward. This makes it easier to hang down by making the upper part longer. Therefore, as described above, the configuration in which the end portion (lower end side) of the upper kraft paper Cu is overlapped from the outside on the end portion (upper end side) of the lower kraft paper Cd is particularly effective.

  The upper folded plate 302 is turned upside down from a horizontal posture, and the upper kraft paper Cu is placed along the rear surface of the packaging body W, thereby forming a state in which the kraft paper C is wound around the four surfaces of the packaging body W. (See FIG. 2 (b) and FIG. 3 (a)). After this state is formed, the center lower folded plate 303 in the standing posture is slid downward (in the direction of arrow D), and then adhered along the overlapping portion of the upper kraft paper Cu and the lower kraft paper Cd. Adhere the tape T.

  That is, immediately after the kraft paper C is wound around the four surfaces of the packaged body W, the slide cylinder 303c is in an extended state (see FIG. 3A), so the slide cylinder 30 is shortened. As a result, the central lower folding plate 303 is slid downward (in the direction of arrow D) while rubbing the lower kraft paper Cd (see FIG. 3B), so that the lower kraft paper Cd is wrinkled. Even in this case, the wrinkles can be reduced by the sliding movement of the central lower folding plate 303. As a result, it is possible to improve the appearance of the product (packaging body) by suppressing the adhesive tape T from being attached in a state where the lower craft paper Cd is wrinkled.

  As described above, in this embodiment, the direction of the sliding movement of the central lower folding plate 303 is downward (in the direction of arrow D). Therefore, in one operation of sliding the central lower folding plate 303 downward, The two operations of the operation for reducing wrinkles of the lower kraft paper Cd and the operation for opening the area for attaching the adhesive tape T can be combined (FIGS. 3 and 8B). reference). As a result, compared to the case where these two operations are performed separately, the process of reducing the wrinkle of the lower kraft paper Cd can be quickly performed, and the time lag can be reduced. Since it can be reduced, the production efficiency can be improved accordingly.

  FIG. 8A is a schematic side view of the body winding device 300 in the step of attaching the adhesive tape T along the overlapping portion of the upper kraft paper Cu and the lower kraft paper Cd by the attaching device 330. FIG. b) is a schematic front view of the body winding device 300 in a state where the adhesive tape T is attached to the overlapping portion of the upper kraft paper Cu and the lower kraft paper Cd by the attaching device 330. FIG.

  As shown in FIG. 8A, the upper folded plate 302 is turned upside down, the upper kraft paper Cu is placed along the rear surface of the package W, and the center lower folded plate 303 in the standing state is slid downward. After the movement (see FIG. 3B), the moving device 310 waiting at the folding position is moved along the return path, which is a path from the folding position to the initial position, so that the upper kraft paper Cu The adhesive tape T is pasted by the pasting means 330 along the overlapping portion with the lower kraft paper Cd (see FIG. 2B).

  Thereby, as shown in FIG. 8B, the end portion of the kraft paper C is stuck on the rear surface of the packaged body W by the adhesive tape T, and the kraft paper C is wound around the packaged body W.

  The upper folded plate 302, the central lower folded plate 303, and the side lower folded plate 304 can be returned to the horizontal posture from the inverted state or the standing state shown in FIG. (See FIG. 2A), the pusher P is shortened to return the elevator 201 to the raised position, and the elevator 201 that has returned to its raised position with an empty load is newly added by a supply device (not shown). To be packaged W (see FIG. 1). Thereby, one cycle of the body winding process is completed. In this case, the moving member 310 waits at the initial position (the end point of the return path and the start point of the forward path) until the body winding process for the next packaged body W is started.

  Thus, in this embodiment, the moving table 314 of the moving device 310 can be reciprocated along the direction horizontally traversing the transport path Y of the packaged body W on the rear surface of the packaged body W in the body winding process. By forming and arranging the cutting device 320 and the pasting device 330 on the moving table 314 of the moving device 310, the cutting device 320 (the rotary blade 321) cuts the kraft paper C in the forward path of the moving table 314, and The adhesive tape T can be pasted by the pasting device 330 on the return path of the moving table 314.

  That is, since the adhesive tape T has an adhesive surface formed only on one side, the adhesive tape T can be attached to the next packaged body W every time the adhesive tape T is attached. Therefore, the movement which returns the sticking apparatus 330 to the movement start position of sticking operation | movement is needed. Since the movement trajectory of the sticking device 330 when returning to such a movement start position overlaps with the transport path Y of the packaging body W, the transport path of the packaging body W during the return movement of the pasting device 330 to the movement start position is as follows. It cannot be transported along Y, resulting in waste.

  On the other hand, according to this embodiment, after the adhesive tape T is attached to the packaged body W, the adhesive tape T can be applied to the next packaged body W. Since the kraft paper C can be cut by the cutting device 320 by using the moving operation for returning the sticking device 330 to the movement start position (folding position of the moving device 310), the production efficiency is improved accordingly. be able to.

  Here, the movement start position of the sticking device 330 (folding position of the moving device 310) is an operation of pushing the package body W along the transport path Y against the kraft paper C suspended in the transverse position (FIG. 6A). ) And FIG. 6 (b)) must be set outside the area of the transport path Y of the package W. Further, even after the operation of pushing the package body W, the upper folded plate 302 and the lower folded plates 303 and 304 are rotated when the upper and lower kraft paper Cu and Cd are folded on the rear surface of the package body W. In order not to interfere, the movement start position of the sticking device 330 (the folding position of the moving device 310) needs to be maintained outside the area of the conveyance path Y of the package W.

  Therefore, the adhesive tape T is pasted by the pasting device 330 by the first operation for moving the pasting device 330 from the movement start position to the pasting start position, and the pasting device 330 is brought close to the rear surface of the package W to be adhesive tape. A second operation for pressing the adhesive surface of T to the attachment start position and a third operation for attaching the adhesive tape T by moving the attaching device 330 along the width direction of the kraft paper C are mainly required.

  In this case, in the structure in which the second operation is performed using an expansion / contraction operation such as an air cylinder, the second operation is performed after the completion of the first operation in order to accurately press the adhesive surface of the adhesive tape T to the application start position. It is necessary to stop the movement of the sticking device 330 once before the execution of this, and the time required for sticking the adhesive tape T increases because of the stop time.

  On the other hand, according to the present embodiment, the guide groove 311 is provided in the base member 312 and the movement of the press contact arm 332 can be guided along the outline (shape) of the guide groove 311, so that the press contact arm 332 is moved to the moving device. With the movement of 330 (moving table 314), the rear surface of the packaged body W can be gradually brought closer. That is, the first operation and the second operation described above can be performed continuously, and it is not necessary to stop the moving device 310 once after the completion of the first operation and before the start of the second operation. Therefore, the time required for attaching the adhesive tape T can be shortened.

  Further, if it is not necessary to stop the moving device 310 (moving table 314) halfway in this way, it is not necessary to keep the moving speed at which the moving device 310 can be stopped. From this point, the time required for attaching the adhesive tape T can be shortened.

  Next, a detailed configuration of the side folding device 400 will be described with reference to FIGS. 9 to 14. 9 is a schematic top view of the side folding device 400, FIG. 10 (a) is a schematic front view of the side folding device 400 as viewed in the direction of the arrow Xa in FIG. 9, and FIG. It is a rear surface schematic diagram of the side folding device 400 in the arrow Xb direction view.

  In FIGS. 10A and 10B, the rotation cylinder 401a, the link mechanism 401b, and the holding device 410 are not shown. Further, in the following drawings, for convenience of explanation, the ear ends facing along the vertical direction (arrow UD direction) among the ear ends of the kraft paper C are referred to as “upper and lower ear ends Eud”. Of the ear ends of the paper C, the ear ends facing in the front-rear direction (arrow FB direction) are referred to as “front and rear ear ends Efb”.

  As shown in FIGS. 9 and 10, the side folding apparatus 400 includes a first folding plate 401 for folding the upper and lower ear ends Eud on the left and right side surfaces of the package W, and the front and rear ear ends Efb, respectively. A second folded plate 402 for folding into the left and right side surfaces of the package W, and rotating cylinders 401a and 402a for generating a driving force for rotating the first folded plate 401 and the second folded plate 402; Link mechanisms 401b and 402b for transmitting the driving force of the rotating cylinders 401a and 402a to the first folded plate 401 and the second folded plate 402, respectively.

  The first folded plate 401 has two pairs of upper and lower pairs arranged on the left and right, and the second folded plate 402 has two pairs of front and rear pairs formed on the left and right. . That is, four each of the first folded plate 401 and the second folded plate 402 are disposed. Further, each of the folded plates 401 and 402 is provided with a rotating cylinder 401a and 402a and a link mechanism 401b and 402b, respectively.

  The first folded plate 401 is a trapezoidal flat plate-like body whose width dimension (arrow F-B direction dimension) decreases toward the outside in the width direction (arrow L-R direction) of the kraft paper C, and the width dimension is The wide edge is pivotally supported by the rotation shaft, so that an overhanging posture (see FIG. 11) extending from the rotation shaft in the arrow L direction or the arrow R direction and from the rotation shaft in the arrow U direction or the arrow D direction. It is possible to rotate between a folded posture (see FIG. 13) that extends and faces the left and right side surfaces of the package body W.

  That is, the driving force of the rotating cylinder 401a is transmitted to the first folded plate 401 via the link mechanism 401b, and the first folded plate 401 in the overhanging posture is brought into the folded posture state by turning, and the packaged body By facing the left and right side surfaces of W, the upper and lower ear ends Eud can be folded inward to be along the left and right side surfaces of the packaged body W (see FIG. 13).

  The second folded plate 402 is a trapezoidal flat plate-like body whose width dimension (arrow UD direction dimension) decreases toward the outer side in the width direction (arrow LR direction) of the kraft paper C. The wide side edge is pivotally supported by the rotation shaft, so that an overhanging posture (see FIG. 11) extending from the rotation shaft in the arrow L direction or the arrow R direction and from the rotation shaft in the arrow F direction or the arrow B direction. It is possible to rotate between the folded posture (see FIG. 14) that extends and faces the left and right side surfaces of the package body W.

  That is, the driving force of the rotating cylinder 402a is transmitted to the second folded plate 402 via the link mechanism 402b, and the second folded plate 402 in the overhanging posture is brought into the folded posture state by turning, and the packaged body By facing the left and right side surfaces of W, the front and rear ear ends Efb can be folded inward so as to be along the left and right side surfaces of the packaged body W (see FIG. 14).

  The width dimension of the first folded plate 401 on the proximal end side (rotating shaft side) is set to the same dimension as the width dimension of the second folded plate 402 on the proximal end side. On the other hand, the width dimension of the first folded plate 401 on the distal end side (opposite to the rotation axis) is set to a value larger than the width dimension on the distal end side of the second folded plate 402, and the proximal end of the first folded plate 401 is set. The overhang dimension from the leading end to the leading end is set to a value smaller than the overhang dimension from the base end to the leading end of the second folded plate 402.

  Further, a recessed portion 402 c having a rectangular shape in front view is recessed on the distal end side of the second folded plate 402. The recessed portion 402c is recessed with an outer shape larger than the maximum region where the movement locus of the second folded plate 402 overlaps the fixed claw 413 and the moving claw 414 of the holding device 410 described later. Therefore, even when the second folded plate 402 is in the overhanging posture, the moving claw 414 of the holding device 410 can be moved, and the holding claw 413 and the moving claw 414 hold and release the front and rear ear ends Efb. (See FIGS. 11 and 12). Further, the second folding plate 402 can be rotated between the extended position and the folded position without interfering with the fixed claw 413 and the moving claw 414 without retreating the holding device 410 in the direction away from the package body W. It is possible to improve the production efficiency in the side folding process.

  The side folding device 400 includes a conveyance restriction plate 403 and elevating mechanisms 404 and 405. The conveyance regulating plate 403 is a flat plate body having a rectangular shape in front view, and the two second folded plates positioned on the arrow F side (that is, downstream of the conveyance path Y) of the four second folded plates 402. Each is connected to 402 via a rotation shaft.

  Therefore, in a state where the second folded plate 402 is in the projecting posture, the transport regulating plate 403 is disposed in a posture that crosses the transport path Y to the left and right together with the second folded plate 402. Therefore, the belt conveyor 501 follows the transport path Y. It is possible to receive and stop the package W to be conveyed. On the other hand, when the folding of the front and rear ear ends Efb is completed by the rotation of the second folding plate 402 to the folding position, the conveyance regulating plate 403 is removed from the conveyance path Y along with the rotation of the second folding plate 402. Since it is evacuated to the direction (see FIG. 14B), it is possible to make it possible to transport the package W after the side folding has been completed along the transport path Y.

  The elevating mechanisms 404 and 405 include two first folded plates 401 located on the arrow U side of the four first folded plates 401 and an arrow B side of the four second folded plates 402 (that is, , Two lower folded plates 402 positioned on the upstream side of the transport path Y), and a lowered position that allows the side folding of the kraft paper C to the packaging body W placed on the belt conveyor 501; , A mechanism for moving up and down between the lowered position and the raised position that is above (arrow U direction side).

  That is, each of the two first folded plates 401 and the second folded plate 402 is retracted to the raised position by the elevating mechanisms 404 and 405, so that the package body W is moved to the two first folded plates 401. In addition, the belt conveyor 501 can convey the sheet to a position received by the conveyance regulating plate 403 without being obstructed by the second folded plate 402. The elevating mechanisms 404 and 405 also elevate and lower the rotating cylinders 401a and 402a and the link mechanisms 401b and 402b corresponding to the two first folded plates 401 and the second folded plate 402, respectively.

  The side folding device 400 includes a holding device 410. The holding device 410 is a device for holding the front and rear ear ends Efb of the ear ends of the kraft paper C wound around the package body W. The main body 411 and the main body 411 are arranged on the left and right sides of the package body W. The main body cylinder 412 that moves in the direction of approaching and separating from the side surface of the body, a pair of fixed claws 413 fixed to the main body 411, and the front and rear of the pair of fixed claws 413 are disposed close to the fixed claws 413. A pair of moving claws 414 formed so as to be movable in a separating direction and a claw cylinder 415 for moving the moving claws 414 are mainly provided and disposed at positions facing the left and right side surfaces of the packaged body W. Is done.

  In the pair of fixed claws 413, the disposition interval i1 (interval in the direction of arrow FB) between the surfaces facing the moving claw 414 is the facing interval i0 (interval in the direction of arrow FB) of the front and rear ear ends Efb. The pair of moving claws 414 in a state of being separated from the fixed claws 413 is set so that the arrangement interval i2 between the surfaces facing the fixed claws 413 is equal to the front and rear ears. The distance is set to be larger (wider) than the facing distance i0 of the end Efb.

  Therefore, the main body 411 is moved by the main body cylinder 412 so as to be close to the left and right side surfaces of the packaged body W, whereby the fixed claw 413 is disposed inside the front and rear ear ends Efb, while the moving claw 414 is disposed. It can be arranged outside the front and rear ear ends Efb (see FIG. 11). Therefore, from this state, the moving claw 414 is moved by the claw cylinder 415 and is brought close to the fixed claw 413, whereby the front and rear ear ends Efb are sandwiched and held between the fixed claw 413 and the moving claw 414. (See FIG. 12).

  In this case, the front and rear ear ends Efb are displaced inward by a predetermined amount from the initial position before being sandwiched between the fixed claw 413 and the moving claw 414 (in the direction of narrowing the facing interval). It arrange | positions at an inner position (refer FIG. 12). As a result, the front and rear ear ends Efb can be slackened, and the upper and lower ear ends Eud can be folded by the first folding plate 401 while suppressing the tearing of the ear ends, as will be described later. (See FIG. 13).

  Further, in the present embodiment, one of the front and rear ear ends Efb (the end of the ear that is connected to the rear surface of the package W) has an overlapping portion in which both ends of the upper craft paper Cu and the lower kraft paper Cd overlap. Then (see the enlarged view of FIG. 2B), the fixed claw 413 and the moving claw 414 are disposed at a position where the overlapping portion of the upper kraft paper Cu and the lower kraft paper Cd can be sandwiched. The Thereby, the shape of the folding of the upper and lower ear ends Eud and the front and rear ear ends Efb can be stabilized.

  Next, with reference to FIG. 11 to FIG. 14, the ear end of the kraft paper C (the portion of the kraft paper C that has been wound around the packaged body W is not yet folded) by the side folding device 400 of the packaging device 1. A side surface folding process for folding the left and right side surfaces of the packaged body W will be described. The description will be given with reference to FIGS. 9 and 10 as appropriate.

  11 (a), 12 (a), 13 (a), 14 (a), and 14 (b) are schematic side views of the side folding device 400, and FIG. 11 (b) and FIG. FIG. 13B and FIG. 13B are schematic top views of the side folding device 400.

  11A and 11B, the first folded plate 401 and the second folded plate 402 are in an overhanging posture, and the front and rear ear ends Efb are sandwiched between the fixed claws 413 and the moving claws 414. Corresponding to the previous state, FIGS. 12 (a) and 12 (b) show that the moving claw 414 moves from the state of FIG. 11 (a) and FIG. This corresponds to a state in which the ear end Efb is sandwiched.

  13 (a) and 13 (b) correspond to a state in which the first folded plate 401 and the second folded plate 402 are in the folded posture from the state of FIGS. 12 (a) and 12 (b). FIG. 14A corresponds to a state in which one of the second folded plates 402 is in the folded posture from the state of FIG. 13A and FIG. 13B, and FIG. This corresponds to a state in which one of the second folded plates 402 is in the folded posture from the state of a).

  In the initial state in the side folding process, the two first folded plates 401 located on the arrow U direction side of the four first folded plates 401 and the arrow BF of the four second folded plates 402. The second folded plate 402 located on the direction side (upstream side of the transport path Y) is raised by the elevating mechanisms 404 and 405 and arranged at the raised position, and the remaining two first folded plates located on the arrow D direction side The plate 401 and the second folded plate 402 positioned on the arrow F direction side (downstream side of the transport path Y) are in an overhanging posture, and the holding device 410 is disposed at a position away from the left and right side surfaces of the packaged body W. The

  When performing the side folding, the packaged body W that is pushed out from the mounting table 301 of the body winding device 300 and is transported along the transport path Y by the belt conveyor 501 (see FIG. 6B), the arrow F direction side ( The sheet is received by the second folded plate 402 and the conveyance regulating plate 403 (see FIG. 10) that are in an overhanging posture on the downstream side of the conveyance path Y). Accordingly, the packaged body W can be disposed at a position where the side folding can be performed by the first folded plate 401 and the second folded plate 402.

  After arrange | positioning the to-be-packaged body W in the position which can be folded in a side surface, the 1st folding plate 401 and the 2nd folding plate 402 (namely, two 1st folding located in the arrow U direction side) are arrange | positioned in the raising position. The plate 401 and the second folded plate 402 located on the arrow BF direction side (upstream side of the transport path Y) are lowered by the elevating mechanisms 404 and 405 and arranged at the lowered position, and the holding device 410 is packaged. It arrange | positions so that it may adjoin to the left and right side surfaces of the body W.

  Accordingly, as shown in FIGS. 11A and 11B, the first folded plate 401 and the second folded plate 402 are in a state along the upper and lower ear ends Eud and the front and rear ear ends Efb, respectively. The front and rear ear ends Efb are arranged between the fixed claw 413 and the moving claw 414 of the holding device 410 in an overhanging posture. From this state, the claw cylinder 415 of the holding device 410 is driven to bring the moving claw 414 close to the fixed claw 413. Accordingly, as shown in FIGS. 12A and 12B, the front and rear ear ends Efb can be sandwiched between the fixed claws 413 and the moving claws 414.

  As shown in FIGS. 12A and 12B, after the front and rear ear ends Efb are sandwiched between the fixed claw 413 and the moving claw 414, the first folding plate 401 is rotated to be in the folded posture. By doing so, as shown in FIGS. 13A and 13B, the upper and lower ear ends Eud are folded inward so as to be along the left and right side surfaces of the packaged body W. The four first folded plates 401 have the same timing for starting the rotation and completing the folding.

  Thus, when the upper and lower ear ends Eud are folded by the first folding plate 401, the front and rear ear ends Efb can be held and restrained by the fixed claws 413 and the moving claws 414 of the holding device 410. Therefore, the posture of the front and rear ear ends Efb can be stabilized. As a result, variation occurs in each of the folded shape of the upper and lower ear ends Eud folded by the first folded plate 401 and the folded shape of the front and rear ear ends Efb folded thereafter by the second folded plate 402. As a result, the appearance of the product (packaging body) can be improved.

  In this case, according to the side folding device 400 of the present embodiment, the front and rear ear ends Efb are located at the initial position before the portion sandwiched between the fixed claw 413 and the moving claw 414 is sandwiched as described above ( 11), the front and rear ear ends Efb can be slackened. Therefore, when the upper and lower ear ends Eud are folded by the first folding plate, the front and rear ear ends Efb held between the fixed claw 413 and the moving claw 414 can be suppressed from being pulled. Breaking of the ends (upper and lower ear ends Eud and front and rear ear ends Efb) can be suppressed.

  Further, according to the side folding device 400 of the present embodiment, the holding device 410 fixes the fixed claw 413 to the main body 411 at a position inside the front and rear ear ends Efb and moves the moving claw toward the fixed claw 413. Since the movable claw 414 is moved toward the fixed claw 413, the front and rear ear ends Efb are held (pinched) by the fixed claw 413 and the movable claw 414, and the inner positions of the front and rear ear ends Efb are moved. Can be simultaneously performed (moving to the inside of the sandwiched portion).

  Thus, for example, by moving the two claws in a direction close to each other, the front and rear ear ends Efb are sandwiched between the two claws, and the two claws in a state where the front and rear ear ends Efb are sandwiched By moving each in the same direction, the time required for both of the above-described operations (holding the ear end and placing it at the inner position) is shortened and the production efficiency is improved as compared with the structure arranged at the inner position. In addition, it is possible to simplify the structure and reduce the product cost and improve the reliability.

  Furthermore, according to the side folding device 400 of the present embodiment, as described above, the holding device 410 has an overlapping portion (hereinafter referred to as “overlap”) of the upper craft paper Cu and the lower craft paper Cd at the front and rear ear ends Efb. 2 (b) (see the enlarged view of FIG. 2B) is sandwiched and held between the fixed claw 413 and the moving claw 414, so that the folding shape of the upper and lower ear ends Eud and the front and rear ear ends Efb is stable. Can be

  That is, since the overlapping portion is located at the upper and lower ear ends Eud, it cannot be sandwiched between the fixed claw 413 and the moving claw 414, or the overlapping portion is located at the front and rear ear ends Efb, but the fixed claw 413 and the moving claw If not held between the claws 414, the overlapping portion is opened when the upper and lower ear ends Eud are folded by the first folding plate 401, and the posture of the front and rear ear ends Efb tends to become unstable. Therefore, when the first folding plate 401 is folded and when the second folding plate 402 is folded thereafter, the variation in the shape of the folding of the ear end becomes large.

  On the other hand, according to the present embodiment, since the overlapping portion can be held between the fixed claw 413 and the moving claw 414, the overlapping portion is opened when the upper and lower ear ends Eud are folded by the first folding plate 401. Can be suppressed. Therefore, the posture of the front and rear ear ends Efb can be stabilized, and variation in the shape of the ear end folding can be suppressed. As a result, the appearance of the product (packaging body) can be improved.

  As shown in FIGS. 13A and 13B, after the upper and lower ear ends Eud are folded by the first folding plate 401, the claw cylinder 415 of the holding device 410 is driven to move the moving claw 414. One of the second folded plates 402 (the second folded plate 402 located on the upstream side of the transport path Y) at the same time when the movement in the direction away from the fixed claw 413 is started or after a lapse of a predetermined time from the start. As shown in FIG. 14A, one of the front and rear ear ends Efb (arrow B side) is folded inward.

  In this case, as described above, since the recessed portion 402c is recessed in the second folded plate 402, the second folded plate 402 projects as shown in FIGS. 13 and 14A. Even in the posture, the moving claw 414 of the holding device 410 is moved without interfering with the second folded plate 402, and the holding of the front and rear ear ends Efb by the fixed claw 413 and the moving claw 414 is released. be able to. Further, the second folding plate 402 can be rotated from the projecting position to the folding position without interfering with the fixed claw 413 and the moving claw 414 without retreating the holding device 410 away from the packaged body W. Can be made. As a result, the production efficiency in the side folding process can be improved.

  As shown in FIG. 14 (a), after one of the front and rear ear ends Efb is folded inward by one of the second folding plates 402, the front and rear ears are shown in FIG. 14 (b). The other end (the arrow F side) of the ends Efb is folded inward by the other of the second folded plates 402 (the second folded plate 402 located on the downstream side of the transport path Y). When the other front and rear ear ends Efb are folded by the other second folded plate 402, the holding device 410 is moved away from the left and right side surfaces of the packaged body W and retracted to the retracted position. Yes.

  Thus, the side folding process is completed. The packaged body W that has been side-folded is conveyed to the next process by the belt conveyor 501, and the side-folded portion is adhered by the adhesive tape T, whereby the 6-side packaging is completed.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  The numerical values given in the above embodiments are merely examples, and other numerical values can naturally be adopted.

  In the above-described embodiment, the case where the center lower folding plate 303 in the standing posture is slid downward in the trunk winding device 300 has been described. However, the present invention is not necessarily limited to this, and the sliding movement direction may be upward. Further, the upward and downward sliding movement of the central lower folding plate 303 may be repeated a plurality of times.

  In the above-described embodiment, the case where the central lower folding plate 303 is slid in the body winding device 300 has been described. However, the upper folding plate 302 is not necessarily limited to this, and instead of or in addition to this. Alternatively, the side lower folded plate 304 may be slid upward or downward.

  In the above-described embodiment, the case where the press-contact arm 332 of the sticking device 330 is guided by the guide groove 311 and approaches or separates from the rear surface of the packaged body W has been described. The table 314 may be provided with a retractable cylinder device, and the pressing arm 332 may be moved closer to or away from the rear surface of the packaged body W by the expansion and contraction operation of the cylinder device.

  In the above embodiment, the case where the front and rear ear ends Efb are sandwiched between the fixed claw 413 and the moving claw 414 and the upper and lower ear ends Eud are folded inward by the first folding plate 401 in the side folding device 400 is described. However, the present invention is not limited to this, and the upper and lower ear ends Eud may be sandwiched between the fixed claw 413 and the moving claw 414, and the front and rear ear ends Efb may be folded inward by the second folding plate 402. .

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 103 Guide member 103a Surface 104 which guides kraft paper Spray apparatus (spraying means)
104a Tubular member 104b Outlet hole 300 Body winding device 302 Upper folded plate 303 Center lower folded plate (lower folded plate)
304 Side lower folded plate (lower folded plate)
310 Moving device (moving means)
311 Guide groove (part of guide means)
315 Guide rod (part of guide means)
320 Cutting device (cutting means)
330 Affixing device (applying means)
401 First folded plate 402 Second folded plate 413 Fixed claw (part of the holding member, first claw)
414 Moving claw (part of holding member, second claw)
Arrow UD First direction arrow FB Second direction arrow LR Kraft paper width direction W Package C Kraft paper Cd Lower kraft paper Cu Upper kraft paper Eud First ear end Efb First 2 ear end T adhesive tape Y

Claims (4)

After wrapping the kraft paper around the front, top and bottom surfaces of the package body, both ends of the kraft paper are along the rear surface of the package body, and overlapped portions of both ends of the kraft paper along the back surface of the package body In a body winding device that performs body winding of the packaged body by the craft paper by sticking an adhesive tape along,
The wrapping body is formed such that the lower kraft paper of both ends of the kraft paper is folded inward by being formed so as to be pivotable and in a standing state facing the rear surface of the wrapping body with the rotation. A lower folded plate along the back of the
The upper kraft paper of both ends of the kraft paper is folded inward by being turned upside down and facing the rear surface of the wrapping body along with the rotation of the wrapping body. With an upper folded plate along the rear surface,
The lower folding plate is slid and moved upward and / or downward along the rear surface of the packaged body after being placed in the upright state.   The body winding device according to claim 1, wherein a direction of the sliding movement of the lower folding plate is a downward direction.   3. The lower folded plate is rotated while being slidably displaced in a direction away from a rotation center of the rotation when the lower folded plate is brought into the standing state with the rotation. The trunk winding apparatus as described.   After the lower folded plate is in the upright state, the upper folded plate is in the inverted state, and on the rear surface of the packaged body, an end portion of the upper kraft paper is placed on an end portion of the lower kraft paper. The body winding device according to any one of claims 1 to 3, wherein the body winding device overlaps from the outside.

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