JP5591313B2 - Packaging machine - Google Patents

Description

  The present invention relates to a packaging machine. A packaging machine is a machine that wraps a workpiece with wrapping paper. The present invention is not particularly limited to the type of workpiece, and can be applied to any type of workpiece. Typical examples of the work include a toilet roll, a kitchen roll, and a book. In this specification, the case where a toilet roll is handled as a workpiece will be described as an example. As shown in FIG. 11 (A), a film package containing 10 or more toilet rolls (wrapping form when a general consumer buys at a retail store, etc.) is called a film package w. An assembly of several packaging bodies w in two rows is called a collective work W. In addition, the number of film packaging bodies w in each row may be 3 or less, or 5 or more, in addition to 4 (example in FIG. 11A).

  When transporting toilet rolls, kitchen rolls, books, etc., they were conventionally placed in cardboard boxes. However, cardboard boxes are costly and are difficult to dispose of after transport. Therefore, so-called caramel wrapping, in which these works are wrapped with a strong wrapping paper such as kraft paper, has been performed.

  As a conventional example of caramel packaging, there is a technique described in Patent Document 1. In this prior art, a work on which books are stacked is placed on a flat surface, and a wrapping paper is wrapped around three surfaces of the work, and then the fourth surface is moved up and down the upper folding plate and the lower folding plate to align the packaging paper. I'm winding around. In addition, the body is wound tightly using a pressing plate that presses the work toward the upper and lower folding plates. Further, after that, using appropriate means, the wrapping paper on both sides is folded to wrap the entire six surfaces of the workpiece.

A conventional packaging machine that handles a toilet roll as a work will be described with reference to FIG.
(I) First, two base papers p1 and p2 are unwound from each roll, and bonded together with a hot melt adhesive g1 to form a wrapping paper P. The wrapping paper P is cut into a predetermined length with a cutter. The wrapping paper P is supplied horizontally. The collective workpiece W is conveyed by a belt conveyor or the like (not shown) and supplied below the wrapping paper P. At this time, the handle h (see FIG. 11A) of the film package w faces downward and is in contact with a conveyor belt or the like.
(II) Next, the wrapping paper P is wound around the three surfaces (front surface, upper surface, and rear surface) by raising the collective workpiece W. Then, the hot melt adhesive g2 is applied to one edge of the wrapping paper P.
(III) Of the ends of the wrapping paper P, fold the direction on which the hot melt adhesive g2 is applied along the fourth surface (lower surface) of the collective workpiece W,
(IV) Next, the wrapping paper P is wound around the collective work W by folding the other end along the fourth surface (lower surface) of the collective work W. At this time, the end portions of the wrapping paper P are temporarily fixed by the hot melt adhesive g2.
(V) Next, side folding is performed to wrap the remaining two surfaces (side surfaces) of the collective workpiece W with the wrapping paper P.
(VI) Adhere the side tape t2 to the side fold and fix it.
(VII) Next, the upper surface tape t1 is stuck and fixed over the end portions of the wrapping paper P (the lower surface in FIG. 12 (VII)).
(VIII) After turning the assembly work W upside down,
(IX) A character, a pattern, etc. are printed on the wrapping paper P, and a packaging operation is complete | finished.

Japanese Patent Laid-Open No. 1-222612

The packaging machine as described above has the following four problems.
(A) Since the end portions of the wrapping paper P are temporarily fixed with the hot melt adhesive g2 (II) and then attached by attaching the upper surface tape t1 (VII), two steps are required. There is a problem that the processing speed is slow. Further, when the wrapping paper P is tightly wound, the temporary fixing may be peeled off due to the force of the wrapping paper P to open, and the end of the wrapping paper P may be displaced. If it does so, there exists a possibility that the upper surface tape t1 cannot be stuck over edge parts but cannot be fixed.
(B) The hot melt adhesives g1 and g2 are used for bonding the two base papers p1 and p2 and temporarily fixing the end portions of the wrapping paper P. In either case, the amount applied is small. Therefore, there is a problem that the hot melt adhesive is carbonized inside the apparatus for applying the hot melt adhesives g1 and g2, and the nozzles are likely to become dirty or clogged, and frequent maintenance is required.
(C) Since the handle h of the film package w is supplied with the handle h facing downward, the handle h may be caught by a conveying means such as a conveyor and broken. In addition, since the operator cannot visually inspect, even if the handle h is torn, it is wrapped as it is.
(D) In particular, in the case of a soft work such as a toilet roll, the volume of the work decreases as the wrapping paper P is tightly wound, and the number of loads on the transport truck increases, thereby reducing the transport cost. Therefore, it is desired to wrap the wrapping paper P more tightly.

An object of this invention is to provide the packaging machine with a quick processing speed in view of the said situation.
It is another object of the present invention to provide a packaging machine that does not use a hot melt adhesive and is easy to maintain.
Another object of the present invention is to provide a packaging machine in which the handle of the film packaging body is not likely to be broken.
Furthermore, it aims at providing the packaging machine which can wind a wrapping paper tightly around a workpiece | work.

A packaging machine according to a first aspect of the present invention is a packaging machine that wraps a work with wrapping paper, the wrapping paper supply means for supplying the wrapping paper so as to be orthogonal to the transport path of the work, and the wrapping paper supply means A tape attaching means for attaching a part of the adhesive surface of the adhesive tape to the front edge of the wrapping paper supplied by the wrapping paper, and the work is pushed into the wrapping paper supplied by the wrapping paper supply means. Pressing means for winding the sheet around the three surfaces of the workpiece, rear end folding means for folding the rear end portion of the wrapping paper along the fourth surface of the workpiece, and the front end portion of the wrapping paper as the fourth surface of the workpiece. From the front end folding means for attaching the remaining part of the adhesive surface of the adhesive tape to the rear end of the wrapping paper, and from the supply position of the wrapping paper by the wrapping paper supply means in the work transport path Downstream A pair of sandwiching members disposed across the transport path, and disposed downstream of the wrapping paper supply position by the wrapping paper supply means in the work transport path so as to face the pushing means. A wrapping paper presser provided on the wrapping paper, wherein the pushing means pushes the work together with the wrapping paper between the pair of sandwiching members, and the pair of sandwiching members sandwiches the work and the wrapping paper. The pressing means and the wrapping paper presser are compressed in the transporting direction with the workpiece and the wrapping paper sandwiched therebetween, and compressed in the direction orthogonal to the transporting direction .
A packaging machine according to a second aspect of the present invention is a packaging machine that wraps a workpiece with a wrapping paper, the wrapping paper supply means for supplying the wrapping paper so as to be orthogonal to the transport path of the workpiece, and the wrapping paper supply means. A tape attaching means for attaching a part of the adhesive surface of the adhesive tape to the front edge of the wrapping paper supplied by the wrapping paper, and the work is pushed into the wrapping paper supplied by the wrapping paper supply means. Pressing means for winding the sheet around the three surfaces of the workpiece, rear end folding means for folding the rear end portion of the wrapping paper along the fourth surface of the workpiece, and the front end portion of the wrapping paper as the fourth surface of the workpiece. And a front end folding means for affixing the remaining part of the adhesive surface of the adhesive tape to the rear end of the wrapping paper, and the workpiece is a film package with a handle containing a toilet roll. Yes, said Transport path of Irumu package is horizontal, the film package is in a posture directed the handle on the upstream side of the transport path, characterized in that it is supplied to the transport path.
A packaging machine according to a third aspect of the present invention is characterized in that, in the first or second aspect of the invention, the packaging machine includes a suction unit that is provided in the front end folding unit and sucks the front end of the wrapping paper.
In a packaging machine according to a fourth aspect of the present invention, in the first, second or third aspect, the wrapping paper is composed of a plurality of stacked base papers, and the wrapping paper supply means crimps the base papers. A crimping stop device is provided.

According to the first invention, the adhesive tape is attached to the front edge of the wrapping paper, and the adhesive tape is attached to the rear end portion of the wrapping paper simultaneously with the body winding. The processing speed can be increased. In addition, since temporary fixing with the hot melt adhesive is not performed, the end of the wrapping paper is not displaced, and the wrapping paper can be maintained tightly wound. Further , since the hot melt adhesive is not used for fixing the ends of the wrapping paper, an apparatus for applying the hot melt adhesive is unnecessary, and maintenance is easy. Furthermore, the workpiece is compressed in the direction perpendicular to the conveying direction by the pair of clamping members, and the workpiece is compressed in the conveying direction by the pressing means and the wrapping paper presser, so that the wrapping paper can be tightly wound around the workpiece.
According to the second invention, since the film package is in a posture in which the handle is directed sideways, there is no possibility that the handle is caught by the conveying means and broken.
According to the third invention, since the front end portion of the wrapping paper is pulled by the suction means and is not loosened, the wrapping paper can be tightly wound around the workpiece.
According to the fourth invention, since a plurality of base papers are crimped and a hot melt adhesive is not used for pasting the base papers, an apparatus for applying the hot melt adhesive is unnecessary and maintenance is easy.

It is a side view of a wrapping paper supply part and a body winding part of a packaging machine concerning one embodiment of the present invention. It is the II-II arrow directional view in FIG. FIG. 3 is a view taken along line III-IIII in FIG. 1. It is operation | movement explanatory drawing of process (1)-(3) of a wrapping paper supply part. It is operation | movement explanatory drawing of process (4) of a wrapping paper supply part (5). It is operation | movement explanatory drawing of process (6)-(8) of a body winding part. It is operation | movement explanatory drawing of process (9)-(11) of a body winding part. It is a top view of the packaging machine which concerns on one Embodiment of this invention. It is a side view of the packaging machine. It is process drawing of the packaging machine. (A) is a perspective view of the collective work before packaging, and (B) is a perspective view of the collective work after packaging. It is process drawing of the conventional packaging machine.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, based on FIG. 8 and FIG. 9, the whole structure of the packaging machine A which concerns on one Embodiment of this invention is demonstrated. The packaging machine A is roughly composed of a workpiece supply unit 1, a wrapping paper supply unit 2, a body winding unit 3, a side folding unit 4, a rollover unit 5, and a printing unit 6.

  The workpiece supply unit 1 is a device that supplies a workpiece to the body winding unit 3. The workpiece supply unit 1 is composed of a belt conveyor or the like, and is connected to the body winding unit 3. The packaging machine A according to the present embodiment handles a toilet roll as a work. As shown in FIG. 11A, dozens of toilet rolls are film-wrapped to form a film wrapping body w, and several film wrapping bodies w are arranged in two rows to form a collective work W. The workpiece supply unit 1 supplies the collective workpiece W to the body winding unit 3 in a posture in which the handle h of the film package w is directed sideways (right side in FIGS. 8 and 9).

  The wrapping paper supply unit 2 is a device that supplies the wrapping paper P to the body winding unit 3. The wrapping paper supply unit 2 includes two base paper rolls r1 and r2, from which base papers p1 and p2 are fed out. As the base papers p1 and p2, for example, craft paper that is strong and easy to print characters and patterns is used. Two base papers p1 and p2 are overlapped to form a wrapping paper P, and the wrapping paper P is cut into a predetermined length and supplied to the body winding section 3. The length of the wrapping paper P is appropriately adjusted according to the size of the collective workpiece W. The packaging machine A according to the present embodiment is characterized in the wrapping paper supply unit 2 and will be described in detail later. The wrapping paper supply unit 2 corresponds to “wrapping paper supply means” described in the claims.

  The body winding unit 3 is a device that performs body winding for winding the wrapping paper P around the four surfaces (front surface, upper surface, rear surface, and lower surface) of the collective work W. Since the packaging machine A which concerns on this embodiment has the characteristic in the trunk winding part 3, it explains in full detail behind.

  The side folding unit 4 is a device that folds the unwrapped portion of the wrapping paper P after being wound, that is, the ear end portion, and folds the remaining two surfaces (side surfaces) of the collective workpiece W with the wrapping paper P. As the collective work W passes through the body winding portion 3 and the side folding portion 4, its six surfaces are completely wrapped by the wrapping paper P, and so-called caramel wrapping is performed.

  The collective workpiece W is supplied to the body winding portion 3 in a posture in which the handle h of the film package w is directed sideways, and passes through the side folding portion 4 with the posture. The rollover unit 5 is a device that rolls over the collective workpiece W by 90 ° so that the handle h of the film package w is directed upward.

  The printing unit 6 is a device that prints characters, patterns, and the like on the wrapping paper P that wraps the collective workpiece W.

As shown in FIG. 10, the packaging machine A performs a packaging operation in the following steps.
(I) First, the two base papers p1 and p2 are unwound from each roll and cut into a predetermined length by a cutter, and the front edges of the base papers p1 and p2 are crimped to form a wrapping paper P. The wrapping paper P is supplied vertically downward, and the upper surface tape t1 is attached to the front edge. The collective work W is conveyed by the work supply unit 1 (not shown) and supplied to the side of the wrapping paper P. At this time, the handle h (see FIG. 11A) of the film package w is facing sideways and is not in contact with the conveyor belt or the like constituting the workpiece supply unit 1.
(II) Next, the collective work W is pushed horizontally into the wrapping paper P, whereby the wrapping paper P is wound around the three surfaces (front surface, upper surface, and lower surface).
(III) Fold the rear end of the wrapping paper P along the fourth surface (rear surface) of the assembly work W,
(IV) Next, the wrapping paper P is wound around the collective workpiece W by folding the front end portion along the fourth surface (rear surface) of the collective workpiece W. At this time, the upper surface tape t1 is attached to the rear end portion of the wrapping paper P, and the end portions are fixed.
(V) Next, side folding is performed to wrap the remaining two surfaces (side surfaces) of the collective workpiece W with the wrapping paper P.
(VI) Adhere the side tape t2 to the side fold and fix it.
(VII) After rolling the assembly work W by 90 °,
(VIII) Printing characters and patterns on the wrapping paper P, and the wrapping operation is completed.

Next, the configuration of the wrapping paper supply unit 2 will be described with reference to FIGS. 1, 2, and 3.
As shown in FIG. 1, the two base papers p1 and p2 fed from the base paper rolls r1 and r2 are passed between a pair of first feed rolls 11 and 11 and overlapped in the horizontal direction as a wrapping paper P. Sent. In this way, the wrapping paper P is composed of two stacked base papers p1 and p2. The wrapping paper P sent in the horizontal direction is further passed between the pair of second feed rolls 12 and 12, and the paper feeding direction is changed vertically downward.

  A crimping stop device 13 and a cutter 14 are provided between the first feed roll 11 and the second feed roll 12. The crimping stop device 13 is composed of a pedestal 13a disposed on the lower surface side of the wrapping paper P and a crimp blade 13b disposed on the upper surface side of the wrapping paper P. It is possible. The cutter 14 is disposed on the upper surface side of the wrapping paper P on the downstream side of the crimping stop device 13 in the paper feeding direction of the wrapping paper P. The cutter 14 can be moved up and down in synchronization with the crimp blade 13b.

  When the cutter 14 and the crimp blade 13b descend synchronously, the wrapping paper P is cut by the cutter 14, and at the same time, the front edge of the cut wrapping paper P is sandwiched between the crimp blade 13b and the pedestal 13a. The base papers p1 and p2 can be crimped. Here, crimping refers to a process of making a thin cut in a plurality of sheets, meshing them, and binding them together.

  Below the second feed roll 12, a movable wiper 15 and a clamping bar 16 are provided. The movable wiper 15 and the sandwiching bar 16 are rod-shaped members and are arranged in parallel to each other (see FIG. 2). The sandwiching bar 16 can be moved closer to and away from the movable wiper 15. The wrapping paper P sent from the second feed roll 12 is passed between the movable wiper 15 and the sandwiching bar 16. At this time, the wrapping paper P can be sandwiched by the sandwiching bar 16 approaching the movable wiper 15. The movable wiper 15 and the sandwiching bar 16 can be moved up and down synchronously, and can be pulled vertically downward while sandwiching the front end portion of the wrapping paper P. The movable wiper 15 corresponds to “rear end folding means” recited in the claims.

  A side-view J-shaped guide 17 is provided at the lowest lowered position of the movable wiper 15 and the sandwiching bar 16, and the front end portion of the wrapping paper P drawn by the movable wiper 15 and the sandwiching bar 16 is guided to the winding roll 18. ing. When the winding roll 18 is driven to rotate, the front end portion of the wrapping paper P is bent and held in a J-shape as viewed from the side while being sandwiched between the winding roll 18 and the guide 17. Instead of the winding roll 18 and the guide 17, other holding means for holding the front end portion of the wrapping paper P may be employed.

  A tape applicator 20 is provided in the vicinity of the winding roll 18. As shown in FIG. 3, the tape applicator 20 includes a rail 21 provided in parallel with the winding roll 18 and a traveling unit 22 that can travel along the rail 21. A tape holder 23 that holds the roll tr of the adhesive tape, and an adhesive roll 24 that affixes the adhesive tape t fed from the roll tr to the front edge of the wrapping paper P held by the winding roll 18. , And a press roll 25 that holds the adhered adhesive tape t to the wrapping paper P is mounted.

  In a state where the front end portion of the wrapping paper P is held by the winding roll 18, the adhesive tape t can be attached to the front end edge of the wrapping paper P by running the running unit 22 while feeding the adhesive tape t. At this time, the adhesive surface of the adhesive tape t faces the winding roll 18 side. Then, approximately half of the width of the adhesive surface of the adhesive tape t is attached to the front edge of the wrapping paper P. The surface of the winding roll 18 is made peelable by applying a coating such as Teflon (registered trademark) processing so that the remaining part of the adhesive surface of the adhesive tape t does not stick to the winding roll 18. The tape applicator 20 corresponds to a “tape applicator” described in the claims.

Next, the operation of the wrapping paper supply unit 2 will be described with reference to FIGS. 4 and 5.
(1) First, two base papers p1 and p2 are unwound from each roll, passed through the first feed roll 11 and overlapped to form a wrapping paper P. Then, the wrapping paper P is cut by the cutter 14, and at the same time, the front edge of the cut wrapping paper P is crimped by the crimping device 13. In this way, the two base papers p1 and p2 are crimped, and no hot melt adhesive is used for bonding the base papers p1 and p2. Therefore, an apparatus for applying the hot melt adhesive is not necessary, and the hot melt adhesive is not carbonized inside the apparatus, so that it is not soiled or the nozzle is blocked, and maintenance is easy.

(2) Next, after the wrapping paper P is fed by the first feed roll 11 and the second feed roll 12 and the paper feeding direction is changed vertically downward, it is passed between the movable wiper 15 and the sandwiching bar 16. Then, the front end portion of the wrapping paper P is sandwiched by the sandwiching bar 16 approaching the movable wiper 15.
(3) The movable wiper 15 and the sandwiching bar 16 descend while holding the front end portion of the wrapping paper P, thereby pulling the front end portion of the wrapping paper P vertically downward.

(4) Next, the clamping bar 16 is separated from the movable wiper 15 to release the wrapping paper P. By feeding the wrapping paper P by the second feed roll 12, the front end portion of the wrapping paper P is further lowered and guided to the winding roll 18 along the guide 17. When the winding roll 18 is rotationally driven, the front end portion of the wrapping paper P is held. On the other hand, the movable wiper 15 and the sandwiching bar 16 are raised to their original positions.
(5) Finally, the adhesive tape t is attached to the front edge of the wrapping paper P by the tape attaching device 20. Note that the front edge of the wrapping paper P is formed with a fine cut by crimping, but the cut is not hidden by sticking the adhesive tape t to the surface.

  Thereafter, when the wrapping paper P is fed out for a predetermined length, the wrapping paper P is cut and crimped again. In addition, since the length of the wrapping paper P is appropriately adjusted according to the size of the collective workpiece W, the step (1) is performed during the other steps (2) to (5), or a body winding described later. It may be done during the process.

Next, the configuration of the body winding part 3 will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1, a table 31 is horizontally provided below the second feed roll 12 and on one side (right side in FIG. 1) of the supply position of the wrapping paper P. The upper end opening of the guide 17 is connected to one edge of the table 31 on the supply position side of the wrapping paper P, and the movable wiper 15 and the holding bar 16 can be lowered to the height of the table 31. Yes.

  A push plate 32 is provided above the table 31. The pushing plate 32 is connected to a conveyor 33 and can move in the horizontal direction so as to approach and separate from the supply position of the wrapping paper P. The conveyor 33 is driven by a servo motor so that the position of the pushing plate 32 can be controlled with high accuracy. The pushing plate 32 corresponds to “pushing means” described in the claims.

  On the other side (left side in FIG. 1) of the supply position of the wrapping paper P, a wrapping paper presser 34 is provided so as to face the pressing plate 32. The wrapping paper presser 34 is connected to a driving device 35 and is movable in the horizontal direction so as to approach and separate from the supply position of the wrapping paper P. The driving device 35 is driven by a servo motor so that the position of the wrapping paper presser 34 can be accurately controlled.

  The table 31 is connected to conveying means such as a conveyor constituting the workpiece supply unit 1, and collective workpieces W are supplied from the workpiece supply unit 1. The collective work W supplied to the table 31 is conveyed in the horizontal direction by the push plate 32 and pushed into the wrapping paper P supplied by the wrapping paper supply unit 2. Here, the transport path of the collective work W is a horizontal direction that is the moving direction of the push-in plate 32, and the wrapping paper P is supplied so as to be orthogonal to the transport path of the collective work W. Further, the collective work W is supplied to the table 31 in a posture in which the film packaging body w faces the handle h toward the upstream side (the right side in FIG. 1) of the conveyance path, that is, the posture in which the film packaging body w is laid down.

  On the other side (left side in FIG. 1) of the supply position of the wrapping paper P, an elevator 40 that can be moved up and down is provided. The elevator 40 includes an upper clamping plate 41 and a lower clamping plate 42 that are provided to face each other in the vertical direction. The upper clamping plate 41 and the lower clamping plate 42 are provided at a predetermined interval, and the upper clamping plate 41 is urged toward the lower clamping plate 42 by a spring 43. In the state in which the elevator 40 is raised (solid line in FIG. 1), the upper clamping plate 41 and the lower clamping plate 42 are arranged on the downstream side (left side in FIG. 1) from the supply position of the wrapping paper P in the transport path of the collective workpiece W. . Further, the lower clamping plate 42 is flush with the table 31, and the upper clamping plate 41 and the lower clamping plate 42 are arranged so as to sandwich the conveyance path of the collective workpiece W from above and below. The upper clamping plate 41 and the lower clamping plate 42 correspond to “a pair of clamping members” recited in the claims.

  When the collective work W is pushed into the wrapping paper P by the pushing plate 32, the wrapping paper P is wound around the three surfaces (front surface, upper surface, and lower surface) of the collective work W. It is pushed between the clamping plates 42. The upper clamping plate 41 and the lower clamping plate 42 clamp the collective work W and the wrapping paper P with a predetermined pressure.

  A fixed wiper 50 is provided between the lower clamping plate 42 and the upper end opening of the guide 17 in a state where the elevator 40 is raised (solid line in FIG. 1). A suction means 51 is connected to the upper surface of the fixed wiper 50, and the side surface on the elevator 40 side has a plate shape. The fixed wiper 50 corresponds to “front end folding means” described in the claims.

  In a state where the elevator 40 is lowered (two-dot chain line in FIG. 1), a pusher 61 is provided on one side (left side in FIG. 1) of the elevator 40, and a conveyor 62 is provided on the other side (right side in FIG. 1). Is provided. The collective work W sandwiched between the upper sandwiching plate 41 and the lower sandwiching plate 42 is pushed by the pusher 61 and transferred to the conveyor 62 after the elevator 40 is lowered. Then, the collective work W is conveyed to the side folding part 4 by the conveyor 62.

Next, the operation of the body winding part 3 will be described based on FIGS.
(6) First, the collective work W is supplied from the work supply unit 1 to the table 31. At this time, the collective workpiece W is supplied in a posture in which the film package w has the handle h directed upstream of the transport path. Since the film packaging body w is in a posture in which the handle h is directed sideways, the film packaging body w is placed on the conveying means such as a conveyor constituting the workpiece supply unit 1 with the side surface of the film packaging body w facing down. Therefore, there is no possibility that the handle h is caught by the conveying means and broken.

(7) Next, the wrapping paper presser 34 moves until it comes into contact with the wrapping paper P, and the pushing plate 32 conveys the collective workpiece W toward the wrapping paper P. Therefore, the collective workpiece W is in a state of being sandwiched between the pressing plate 32 and the wrapping paper presser 34. At this time, by controlling the positions of the pressing plate 32 and the wrapping paper presser 34, pressure is applied to the collective workpiece W to compress it in the lateral direction. Since the pressing plate 32 and the wrapping paper presser 34 are driven by a servo motor, control for compressing the collective workpiece W is possible.

(8) Next, the push-in plate 32 is moved forward while the wrapping paper retainer 34 is moved backward to push the collective workpiece W into the wrapping paper P. At this time, the collective workpiece W is compressed in the lateral direction by the pressing plate 32 and the wrapping paper presser 34. When the collective work W is pushed into the wrapping paper P, the wrapping paper P is wound around three surfaces (front surface, upper surface, and lower surface) of the collective work W, and together with the wrapping paper P, the collective work W It is pushed in between. Since the upper sandwiching plate 41 and the lower sandwiching plate 42 sandwich the collective work W and the wrapping paper P with a predetermined pressure, the collective work W is also compressed in the vertical direction. Further, since the collective work W is pushed together with the wrapping paper P between the upper sandwiching plate 41 and the lower sandwiching plate 42, the wrapping paper P is pulled by friction with the upper sandwiching plate 41 and the lower sandwiching plate 42, and is not loosened. Thus, the collective work W is compressed in the horizontal direction and the vertical direction, and the wrapping paper P is wound without slack, so that the wrapping paper P can be tightly wound around the collective work W.

(9) Next, the movable wiper 15 is lowered, and the rear end portion of the wrapping paper P is folded along the fourth surface (rear surface) of the collective workpiece W.

(10) Next, the elevator 40 is lowered. Then, the collective work W is lowered and the fixed wiper 50 is relatively raised. Thereby, the front end portion of the wrapping paper P is folded along the fourth surface (rear surface) of the collective workpiece W, and the remaining portion of the adhesive surface of the adhesive tape t is attached to the rear end portion of the wrapping paper P. At this time, the front end portion of the wrapping paper P is sucked by the suction means 51 of the fixed wiper 50 so that it is pulled and does not become loose. In this way, the wrapping paper P is wound around the collective workpiece W.

  As described above, in the supply stage of the wrapping paper P, the adhesive tape t is attached to the front edge, and the adhesive tape t is attached to the rear end of the wrapping paper P simultaneously with the body winding. They can be fixed in a single step, and the processing speed is increased. In addition, since the temporary fixing with the hot melt adhesive is not performed for fixing the ends of the wrapping paper P, the end of the wrapping paper P is not displaced, and the wrapping paper P can be kept tightly wound. Further, since the hot melt adhesive is not used for fixing the end portions of the wrapping paper P, an apparatus for applying the hot melt adhesive is unnecessary, and maintenance is easy.

(11) Thereafter, the elevator 40 is further lowered, and the collective work W is pushed by the pusher 61 to be placed on the conveyor 62. The collective workpiece W is conveyed to the side folding portion 4 by the conveyor 62.

  In the side folding part 4, side folding is performed to wrap the remaining two surfaces (sides) of the collective workpiece W with the wrapping paper P, and the side tape t2 is attached to the side folding part. Thereby, the caramel wrapping of the collective work W is completed.

  As shown in FIG. 11B, the collective work W wrapped in caramel has the front end portion P1 and the rear end portion P2 of the wrapping paper P aligned on the upper surface and fixed with the upper surface tape t1. This upper surface tape t1 is affixed by the tape applicator 20. The handle h of the film package w is located on the upper surface where the front end P1 and the rear end P2 of the wrapping paper P are combined. This is because in the step (6), the handle h of the film package w is supplied in a posture toward the upstream side of the transport path. By packaging in this way, the handle h appears on the upper surface when the wrapping paper P is opened, and the handle h can be grasped immediately without changing the posture of the film package w.

  The wrapping paper P is in a state where side folds are performed at the side folds 4 and the lower ear P3 is overlapped with the upper ear P4. And the side tape t2 is affixed and fixed over the lower ear part P3 and the upper ear part P4.

  As shown in FIGS. 8 and 9, the side folding portion 4 is provided with a tape applying device 70, and the side tape t <b> 2 is attached by the tape applying device 70. Here, the collective workpiece W passes through the side folding portion 4 with the handle h of the film package w oriented sideways. The tape applicator 70 applies the side tape t2 in the horizontal direction. Therefore, as shown in FIG. 11 (B), the side surface tape t2 is attached in the vertical direction on the side surface of the collective workpiece W, so-called longitudinal attachment. Thus, by fixing the side surface tape t2 vertically, the lower ear portion P3 and the upper ear portion P4 are more firmly fixed than in the case of horizontal attachment.

DESCRIPTION OF SYMBOLS 11 1st feed roll 12 2nd feed roll 13 Crimp stopper 14 Cutter 15 Movable wiper 16 Nipping bar 17 Guide 18 Winding roll 20 Tape sticking device 31 Table 32 Push plate 34 Wrapping paper press 40 Elevator 41 Upper pinch plate 42 Lower pinch plate 50 Fixed wiper 61 Pusher 62 Conveyor

Claims (4)

A wrapping machine for wrapping a workpiece with wrapping paper,
Wrapping paper supply means for supplying the wrapping paper so as to be orthogonal to the workpiece transport path;
A tape attaching means for attaching a part of the adhesive surface of the adhesive tape to the front edge of the wrapping paper supplied by the wrapping paper supply means;
A pushing means for pushing the work into the wrapping paper supplied by the wrapping paper supply means, and winding the wrapping paper around three surfaces of the work;
A rear end folding means for folding the rear end of the wrapping paper along the fourth surface of the workpiece;
A front end folding means for folding the front end portion of the wrapping paper along the fourth surface of the workpiece and attaching the remaining portion of the adhesive surface of the adhesive tape to the rear end portion of the wrapping paper;
A pair of clamping members disposed on the downstream side of the wrapping paper supply position by the wrapping paper supply means in the work transport path, and disposed across the transport path;
A wrapping paper presser disposed on the downstream side of the wrapping paper supply position by the wrapping paper supply means in the transport path of the work, and provided to face the pressing means,
The pushing means pushes the workpiece together with the wrapping paper between the pair of clamping members,
The pair of sandwiching members compress the workpiece and the wrapping paper in a direction perpendicular to the conveyance direction,
At the same time, the pressing means and the wrapping paper presser are compressed in the conveying direction with the work and the wrapping paper sandwiched therebetween . A wrapping machine for wrapping a workpiece with wrapping paper,
Wrapping paper supply means for supplying the wrapping paper so as to be orthogonal to the workpiece transport path;
A tape attaching means for attaching a part of the adhesive surface of the adhesive tape to the front edge of the wrapping paper supplied by the wrapping paper supply means;
A pushing means for pushing the work into the wrapping paper supplied by the wrapping paper supply means, and winding the wrapping paper around three surfaces of the work;
A rear end folding means for folding the rear end of the wrapping paper along the fourth surface of the workpiece;
Folding the front end portion of the wrapping paper along the fourth surface of the work, and including a front end folding means for attaching the remaining portion of the adhesive surface of the adhesive tape to the rear end portion of the wrapping paper,
The work is a film package with a handle containing a toilet roll,
The transport path of the film package is horizontal,
The film package is in a posture directed the handle on the upstream side of the transport path, the packaging characterized in that it is supplied to the transport path EARLY. Provided in the front end folding means, comprising suction means for sucking the front end of the wrapping paper
The packaging machine according to claim 1 or 2, wherein The wrapping paper is composed of a plurality of stacked base papers,
The packaging machine according to claim 1 , wherein the wrapping paper supply means includes a crimping device that crimps the plurality of base papers.

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