JP6313101B2 - Folding device and folding method - Google Patents

Description

  The present invention mainly relates to a folding device and a folding method for folding products, semi-finished products, materials, and the like of worn articles.

  In a wearing article N such as a napkin shown in FIG. 8A, there is a case in which a back sheet Bs or the like is folded in advance on a wearing surface (second surface) F2. In addition, the wearing article N is generally folded with a crease in a direction perpendicular to the longitudinal direction as shown in FIG. 8B in consideration of portability and storage.

  On the other hand, as a folding method as shown in FIG. 8 (b), there is known a folding device that folds an article in a state where the outer surface (first surface) F1 of the worn article N is adsorbed and folds the worn article N ( Patent Document 1).

JP2002-87695A (FIG. 3)

In Patent Document 1, the worn article is folded at a crease at a position that is approximately divided into three equal parts. For this reason, the end of the folded piece (second non-clamping portion N2) that is folded last is close to the end of the folded wearing article, and the fastening tape T is difficult to stick.
On the other hand, in Patent Document 1, in order to set the attachment location of the fastening tape T near the center of the folded wearing article and make it easy to apply the tape T, for example, the folded first non-clamping portion N1 is It is conceivable to lengthen and shorten the folded second non-clamping portion N2. However, in this case, since the distance between the first folding bar 11A and the end portion of the first non-clamping portion N1 is increased, the end portion side of the first non-clamping portion N1 is Easily lifted by centrifugal force due to rotation of base drum. As a result, when the second non-clamping part N2 is folded, it interferes with the end of the second non-clamping part N2, and is difficult to fold.

  Accordingly, an object of the present invention is to provide a folding apparatus and a folding method that can fold an object such as a worn article easily and can fold the object so that a fastening tape can be easily attached, for example. is there.

The folding device of the present invention includes a base drum that is rotatably mounted around a support shaft, and a folding unit that is disposed on an outer periphery of the base drum, and the first object in a direction orthogonal to the longitudinal direction. A folding device that folds between a fold line and a second fold line, wherein the folding unit includes:
A holding base for holding the object in contact with a part of the first surface of the object;
By pushing a first end side region on the first end side from the first surface with respect to the first fold of the object, the first end side region of the object is between the two folds in the object. A first folding operation is performed in which the object is folded at the first fold so as to overlap the central region of the object, and the first folding operation is completed after moving to the second fold side beyond the central position between both folds. A first folding member;
The second end of the object is pushed by pushing a second end side region opposite to the first end of the object, which is closer to the second end than the second fold, from the first surface. A second folding operation is performed in which the object is folded at the second fold so that the part-side region overlaps the region on the first end side, and the second fold side is closer to the second fold side than the center position between both folds. And a second folding member that completes the folding operation.

  According to the folding device of the present invention, even when the first end side region is formed long, the first folding member moves to the second fold side beyond the center position between both folds. The vicinity of the front end of the first end side region can be firmly pressed by the first folding member, and when the second end side region is folded, the front end of the first end side region does not float, and both end side regions are There is no risk of interference with each other. As a result, the object can be easily folded.

  Further, since the second folding member completes the folding operation on the second fold side with respect to the center position between both folds, the second end side region includes the position pressed by the second folding member and the second end portion. Even if a space for attaching the fastening tape is provided between the two, the second end of the object can be sufficiently separated from the end (first fold) of the object in the folded state. Thereby, a fastening tape is easily affixed over the 2nd edge part of a target object, and the intermediate part of a target object.

The folding method of the present invention is a folding method in which an object is folded at a first fold and a second fold in a direction perpendicular to the longitudinal direction,
The dimension from the second end to the second crease close to this, on the side opposite to the first end, is set shorter than the dimension from the first end to the first fold close thereto,
After the object is folded at the first fold so that the first end side region between the first fold and the first end overlaps the central region between both folds, the second fold and the second end The object is folded at the second fold so that a second end side region between the first and second end portions overlaps the first end side region.

According to the folding method of the present invention, the second end side region folded by the second folding operation is shorter than the first end side region folded by the first folding operation. It is easy to bring the second end, which is the end of the end side region, closer to the center of the object in the folded state. As a result, the fastening tape is easily applied to the object in the folded state across the second end portion and the intermediate portion.
Moreover, since the second end side region is short, the length from the position where the object is pressed by the folding member that folds the object at the second fold to the second end can be shortened, and the repulsive force and centrifugal force of the object are resisted. Thus, the second end can be easily prevented from floating. As a result, the fastening tape is more easily applied across the second end of the object and the intermediate part of the object.

It is a perspective view which shows one Example of the folding unit concerning this invention. It is a perspective view which shows the folding operation | movement of the unit. It is a front view which shows an example of a folding device. It is a rear view which shows a folding unit. It is sectional drawing of a folding device. It is a rear view which shows the example of the first half of folding operation. It is a rear view which shows the example of the latter half of folding operation. It is a perspective view which shows an example of a wearing article.

  Preferably, as the holding base rotates together with the base drum, a first arm that causes the first folding member to perform the first folding operation, and as the holding base rotates together with the base drum. And a second arm for causing the second folding member to perform the second folding operation, wherein the rotation angle of the first arm is set larger than the rotation angle of the second arm. .

  In this case, the rotation angle of the first arm is larger than that of the second arm. Therefore, in the first folding operation by the first arm and the first folding member, the first folding member can be easily moved to the second fold side beyond the center position between both folds, while the second The folding operation of the folding member can be easily completed on the second fold side with respect to the center position between both folds.

  Preferably, a first distance from the rotation center of the first arm to the first folding member is larger than a second distance from the rotation center of the second arm to the second folding member.

  In this case, the first distance that is the substantial length of the first arm is larger than the second distance that is the substantial length of the second arm. Therefore, the first folding member can be moved more easily to the second fold side by the first folding operation.

  Preferably, each of the first and second folding members extends in a direction parallel to an axis of the support shaft, the first folding member extends along the first folding member, and the first folding member And a projecting member projecting from the first folding member to the first end side when one folding operation is completed.

  In this case, the contact position between the first folding member and the object can be finely adjusted by selectively changing the circumferential position of the first folding member of the protruding member protruding from the first folding member. Moreover, the contact position of a 1st folding member and a target object can be easily changed by changing the protrusion length only by replacing | exchanging a protrusion member. Thereby, the folding suitable for various length and thickness of a target object is realizable.

Preferably, as the base drum rotates, the first folding member performs the first folding operation, and the second folding member approaches the first end side region in the second folding operation. A first control mechanism for starting a return operation of the first folding member later;
As the base drum rotates, the second folding member performs the second folding operation, the folding of the object by the first folding member is completed, and the first folding member is And a second control mechanism for completing the second folding operation by the second folding member after starting the returning operation to the original position before folding the object.

  In this case, after the first folding operation is completed and after the first folding member starts to return to the origin position, the second folding operation of the second folding member is completed. In addition, after the second folding member reaches the region on the first end side, the first folding member starts the return operation. Therefore, the region on the first end portion side that is partially folded by the first folding operation is prevented from being lifted, and the shape of the object is not easily collapsed, so that the object can be easily folded. Furthermore, the cycle time including the first and second folding operations can be shortened.

  Preferably, the holding base of each folding unit has a plurality of suction holes for sucking and holding a central region between both folds on the first surface of the object.

  In this case, it is easy to hold the object on the holding base by sucking air from the suction holes.

  Preferably, the first and second ends of the object on the second surface are moved in a direction from a predetermined standby position toward the second surface opposite to the first surface of the object. A pressing member is provided in contact with a part of the second surface in a state where the portion is exposed, and sandwiching the object with the holding base.

  In this case, it becomes easier to hold the object by the pressing member. The first fold line and the second fold line are formed in the vicinity of each edge of the pressing member and along the edge.

In the method of the present invention, preferably, a folding unit including a first folding member and a second folding member is used, the object is folded at a first fold by the first folding member, and the object is The second folding member folded at the fold starts reaching the first end side region, and then the returning operation of the first folding member is started.

  In this case, after the second folding member reaches the region on the first end side, the first folding member starts the returning operation. Therefore, the region on the first end side part that is partially folded by the first folding operation is prevented from floating, and the form of the object is not easily collapsed, so that the object can be easily folded.

  The “object” that is folded in the present invention is generally thin, but is mainly a product or semi-finished product of a worn article such as a napkin, disposable diaper, pants, or bandage. Further, the “object” may include a single body or a laminate of a fabric such as a woven fabric, a nonwoven fabric, a knitted fabric, and a resin film, or a pulp fiber or a superabsorbent polymer.

  In the present invention, “folding” means that the object is folded inward and overlapped to make the object smaller.

The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined solely by the appended claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 3, in this embodiment, a large number (for example, eight) of folding units 1 are provided on the outer peripheral portion of a base drum 2 that is a rotating body. Each folding unit 1 has the same shape and structure. Note that the number of folding units 1 is not limited to a specific number, and may be six or seven.

  In FIG. 1, a wearing article N that is an object to be folded includes a wearing surface (second surface) F2 and an outer surface (first surface) F1 that is a surface opposite to the wearing surface F2. . The wearing article N is drawn in the shape of a rectangular flat plate for easy illustration.

  Each of the folding units 1 includes a base block 16, a holding block (holding base) 10, first and second folding bars (folding members) 11 and 12, a pressing plate (pressing member) 13, and a second block shown in FIG. 1 and second arms 14 and 15.

  A plurality of suction holes 10b shown in FIG. 4 are opened on the suction surface 10a of the holding block 10 shown in FIG. The suction surface 10a sucks and holds the unfolded central region NC on the outer surface F1 of the wearing article N. Each holding block 10 is fixed to the base drum 2 of FIG.

  The pressing plate 13 in FIG. 1 is made of, for example, a thin metal plate. The pressing plate 13 has a notch portion 13a, and is formed in a fork shape in which a gap between two circumferential ends is notched. As the base drum 2 rotates, the pressing plate 13 is sequentially arranged in the order of the standby position P1 in FIG. 1A, the pressing position P2 in FIG. And stop at the standby position P1 and the pressing position P2 in FIG.

  In the standby position P <b> 1 of FIG. 1A, the pressing plate 13 waits at a position away from the holding block 10 so as to allow the wearing article N to be supplied onto the holding block 10. The holding plate 13 moves from the standby position P1 in the axial direction S1 of the base drum 2 and then moves toward the wearing surface F2 to hold down the wearing surface F2 so that the wearing article N is placed between the holding block 10 and the holding plate 13. Put it in. Further, after the folding (first and second folding operations) of the wearing article N is completed or immediately before the completion, the pressing plate 13 is moved from the pressing position P2 to the axial direction S2 as indicated by a virtual line in FIG. It moves to the retreat position P3 away from the wearing article N. Thereafter, the pressing plate 13 returns from the retracted position P3 to the original standby position P1.

  In FIG. 1 (b), the wearing article N has a first end portion NE1 and a second end portion NE2 in the longitudinal direction of which the center area NC is pressed by the pressing plate 13 with the wearing surface F2 released. Yes. That is, each end side region in the wearing article N is not sandwiched between the pressing plate 13 and the holding block 10, and the first and second non-clamping portions (first and second ends) that are not sandwiched. The area N1 and N2 can be folded as shown in FIG. In the wearing article N, a first fold R1 is formed along the first edge E1 of the pressing plate 13 in a direction orthogonal to the longitudinal direction, and a second fold R2 is formed along the second edge E2. Is formed. Between these both creases R1 and R2 is a sandwiching portion NC which is the central region.

The first and second folding bars 11 and 12 are formed of, for example, thin round bars. The first folding bar 11 is integrated with a protruding member 11P shown in FIG. The projecting member 11P extends along the round bar and projects from the round bar to the opposite side of the first arm 14 in the radial direction or tangential direction of the round bar.
As shown in FIG. 5, the protruding member 11P is fixed to the first arm 14 via a double nut Dn. Since the protruding direction can be changed by freely adjusting the rotational position of the protruding member 11P, folding suitable for various thicknesses of the worn article can be realized. In addition, this protrusion member 11P can change a protrusion dimension also by replacing | exchanging with the protrusion member from which a dimension differs independently or with the 1st folding bar 11, and implement | achieves folding suitable for the various thickness of a wearing article. be able to.

  Each of the first and second folding bars 11 and 12 only needs to extend in a direction parallel to the axis CL of the hollow shaft (support shaft) 40 in FIG. It may be a cylinder, a square tube, or the like.

  The first and second folding bars 11 and 12 are fixed to the tips of the first and second arms 14 and 15, respectively. The first and second folding operations are performed by moving from the origin position Ph to the folding position Pe in FIG.

  That is, the first folding bar 11 shown in FIG. 2A pushes the first non-clamping portion (first end portion side region) N1 from the outer surface F1, whereby the first edge E1 of the pressing plate 13 is pressed. A first fold operation is performed in which the first non-clamping portion N1 is overlapped on the clamping portion NC (FIG. 1) with the first crease R1 as a vicinity. On the other hand, the second folding bar 12 shown in FIG. 2B pushes the second non-clamping portion (region on the second end side) N2 from the outer surface F1, so that the second end edge E2 of the pressing plate 13 is obtained. A second folding operation is performed in which the second non-clamping portion N2 is overlapped on the first non-clamping portion N1 and the second crease R2 is set in the vicinity thereof.

  The first and second folding bars 11 and 12 reciprocate along the movement path from the respective origin positions Ph1 and Ph2 to the folding positions Pe1 and Pe2. Each origin position Ph1, Ph2 is set below the upper surface of the base block 16 so as not to interfere with the wearing article N. In particular, the first folding bar 11 is retracted in the retracting groove 16G at the origin position Ph1, thereby preventing the protruding member 11P from interfering with the wearing article N. As shown in FIGS. 7A and 7D, the folding positions Pe1 and Pe2 of the two folding bars 11 and 12 are close to each other.

  Each of the folding positions Pe1, Pe2 is located closer to the second fold line R2 than the central position RC between the fold lines R1, R2. Therefore, the first pressing distance from the first fold line R1 to the first folding position Pe1 is larger than the second pressing distance from the second fold line R2 to the second folding position Pe2.

When the first folding bar 11 reciprocates along the movement path from the origin position Ph1 to the folding position Pe1, as shown in FIGS. 6A to 6D, the first arm 14 moves from the rotation center O1. It rotates within the range of the rotation angle K1 (FIG. 6C) between the straight line 101 extending toward the origin position Ph1 and the straight line 102 extending from the rotation center O1 toward the folding position Pe1.
Similarly, when the second folding bar 12 reciprocates along the movement path from the origin position Ph2 to the folding position Pe2, as shown in FIGS. 7A to 7D, the second arm 15 rotates. It reciprocates in the range of the rotation angle K2 between the straight line 103 extending from the center O2 toward the origin position Ph2 and the straight line 104 extending from the rotation center O2 toward the folding position Pe2.
Here, the rotation angle K1 of the first arm 14 is set larger than the rotation angle K2 of the second arm 15.

  The first distance L1 from the rotation center O1 of the first arm 14 to the first folding bar 11 in FIG. 4 is greater than the second distance L2 from the rotation center O2 of the second arm 15 to the second folding bar 12. Is also big. That is, the substantial arm length L1 of the first arm 14 is longer than the substantial arm length L2 of the second arm 15. The length of the first non-clamping portion N1 where the first folding bar 11 of FIG. 6B is folded is longer than the length of the second non-clamping portion N2 of which the second folding bar 12 of FIG. 6D is folded. . That is, the dimension from the second end NE2 to the second crease R2 close to the opposite side of the first end NE1 is shorter than the dimension from the first end NE1 to the first fold R1 close thereto. It is set.

  As shown in FIG. 5, the base drum 2 is rotatably mounted around the hollow shaft 40 and rotates together with the timing pulley 49 by the rotation of a motor (not shown). The hollow shaft 40 is in communication with a negative pressure source (not shown), and is connected to the air passage 42 formed in the base block 16 and the holding block 10 of the base drum 2 and the suction hole 10b of the holding block 10. Thus, the outer surface F1 of the sandwiched portion NC of the wearing article N is sucked (adsorbed) by the holding block 10.

  A fixed cylinder 41 is provided on the outer periphery of the intermediate portion in the axial direction of the base drum 2. The fixed cylinder 41 is fixed to a frame (not shown). The base drum 2 and the fixed cylinder 41 include first and second control mechanisms 20A and 20B (FIG. 4) and a plate control mechanism 30 that mechanically control the operations of the first folding bars 11 and 12 and the pressing plate 13. Is provided.

As shown in FIG. 5, the plate control mechanism 30 includes an L-shaped first slider 31 and a second slider 32. The first slider 31 slides in the radial direction while rotating around the fixed cylinder 41 together with the base drum 2. The second slider 32 is slidably attached to the first slider 31 in the axial directions S1 and S2, and reciprocates in the axial direction while rotating together with the base drum 2 and the first slider 31. The pressing plate 13 is fixed to the second slider 32. Therefore, as the base drum 2 rotates once from the rotational positions A0 to A7 and A0 in FIG. 3, the pressing plate 13 is moved from the standby position P1. An operation of returning to the standby position P1 through the pressing position P2 and the retracted position P3 is performed.
5 includes first and second cam grooves 31a and 32a for controlling the movement of the first slider 31 in the radial direction and the movement of the second slider 32 in the axial directions S1 and S2. It is formed.

  As shown in FIG. 4, the first or second control mechanism 20A, 20B is formed on the rotation shafts 21a, 21b for rotating the first or second arm 14, 15 and the outer peripheral surface of each rotation shaft 21a, 21b. The pinions 22a and 22b and the racks 23a and 23b meshing with the pinions 22a and 22b are provided. Cam followers 24a and 24b provided in the racks 23a and 23b are respectively guided by a third cam groove 25a and a fourth cam groove 25b formed on the side surface of the fixed cylinder 41 (FIG. 5), and the plate control mechanism. As in the case of 30, it moves in the radial direction of the base drum 2 in accordance with the rotational positions A0 to A7 in FIG. As the pinions 22a and 22b and the racks 23a and 23b mesh with each other, the rotary shafts 21a and 21b rotate and the first and second arms 14 and 15 rotate, so that the folding bars 11 and 12 are moved. The first and second folding operations are performed.

  In the case of the present embodiment, the first control mechanism 20A rotates the first arm 14 of FIG. 6 as the base drum 2 (FIG. 3) rotates, so that the first folding bar 11 moves the first control mechanism 20A. The folding operation is performed. As the base drum 2 (FIG. 3) rotates, the second control mechanism 20B rotates the second arm 15 of FIGS. 6 and 7 to perform the second folding operation on the second folding bar 12. 6, the folding of the wearing article N by the first folding bar 11 of FIG. 6A is completed, and before the first folding bar 11 of FIG. 7B folds the wearing article N. After starting to return to the origin position Ph1 (FIG. 6A), the second arm 15 is rotated so that the folding of the wearing article N by the second folding bar 12 is completed.

Next, an example of the operation will be described.
Each folding unit 1 of the base drum 2 in FIG. 3 receives the wearing articles N one after another while rotating from the rotational positions A0 to A1. When the folding unit 1 sucks the wearing article N at the rotational position A1 and proceeds to the rotational position A2, the second slider 32 and the pressing plate 13 of FIG. 5 move in the axial direction S1. Further, while the folding unit 1 in FIG. 3 is rotated to the rotational position A3, the first slider 31 is moved inward in the radial direction by the plate control mechanism 30 in FIG. 5, and the pressing plate 13 is moved to the pressing position P2. Then, as shown in FIG. 1B, the pressing plate 13 sandwiches the wearing article N between the holding block 10. Therefore, there is no possibility that the back sheet Bs of the wearing article N in FIG.

  Subsequently, while the folding unit 1 rotates from the rotational position A3 to the rotational position A4 in FIG. 4, the first rack 23a in FIG. 4 slides outward in the radial direction. Accordingly, the first rotating shaft 21a rotates, so that the first folding bar 11 together with the first arm 14 of FIGS. 1 and 2 moves from the origin position Ph1 to the folding position Pe1 beyond the central position RC between the folds. . Thus, by performing the first folding operation such that the first folding bar 11 rotates about the first edge E1 of the pressing plate 13 from the outer surface F1 of the wearing article N toward the wearing surface F2, The first non-clamping portion N1 of the wearing article N is folded on the clamping portion NC by the first fold line R1 along the first edge E1.

  At this time, as shown in FIGS. 6A to 6C, the first folding bar 11 rotates greatly together with the first arm 14, and reaches the vicinity of the first end N1 of the wearing article N at the folding position Pe1. Further, the protruding member 11P contacts the outer surface F1 of the wearing article N during the first folding operation and at the folding position Pe1.

  Subsequently, while the folding unit 1 in FIG. 4 rotates from the rotational position A4 to the rotational position A5 in FIG. 3, the second control mechanism 20B causes the second folding bar 12 in FIG. It moves to the folding position Pe2 in FIG. 2B, which is before the center position RC between the folds. That is, by performing the second folding operation so that the second folding bar 12 rotates about the second edge E2 of the pressing plate 13 from the outer surface F1 of the wearing article N toward the wearing surface F2, The second non-clamping portion N2 of the wearing article N is folded onto the first non-clamping portion N1 by the second fold line R2 along the second edge E2.

  At this time, as shown in FIGS. 6C and 6D, the second folding operation of the second folding bar 12 is started after the first folding bar 11 reaches the folding position Pe1. Further, as shown in FIGS. 7A and 7B, after the second folding bar 12 reaches the first non-clamping portion N1, the second folding operation that has not reached the folding position Pe2 is completed. Immediately before, the first folding bar 11 starts to return from the folding position Pe1 to the origin position Ph1 (FIG. 6A). Further, as shown in FIGS. 7C and 7D, the first folding bar 11 is completely separated from the wearing article N when the second folding bar 12 reaches the folding position Pe <b> 2.

  The rotation angle K2 of the second folding bar 12 and the second arm 15 is smaller than the rotation angle K1 of the first folding bar 11 and the first arm 14. As shown in FIG. 2B, the end NE2 of the second non-clamping portion N2 folded by the second folding bar 12 is located near the center of the folded wearing article N.

  Subsequently, while the folding unit 1 in FIG. 3 rotates from the rotation position A5 to the rotation position A6, the pressing plate 13 in FIG. 2B is moved from the pressing position P2 to the wearing surface F2 by the plate control mechanism 30 in FIG. And in the direction along the folds R1 and R2 of the wearing article N, the second folding bar 12 returns (returns) to the origin position Ph2. Thereafter, while the folding unit 1 in FIG. 3 rotates to the rotational position A7, the wearing article N is supplied to the subsequent process. In this way, the wearing article N that is long in the transport direction is folded before and / or after the transport direction of the worn article, and is folded so as to be short in the transport direction.

  Before the second folding bar 12 starts the return operation from the folding position Pe2 to the origin position Ph2, the adhesive tape T as shown in FIG. By sticking, the end portion NE2 of the second non-clamping portion N2 is fixed to the wearing article N.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily consider various changes and modifications within the obvious scope by looking at the present specification.
For example, the folding positions of the first and second folding bars may overlap each other or may not interfere with each other.
Further, the first folding member may not have the protruding member.
Moreover, the folding start and return timing of the folding member may be set to a timing other than the above embodiment. Furthermore, the timing of pulling out the pressing plate may be before the folding operation is completed.
Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the claims.

  INDUSTRIAL APPLICABILITY The present invention can be used for web processing apparatuses such as sanitary products, disposable pants, disposable wearing articles such as diapers, and medical materials such as coating materials.

1: Folding unit 2: Rotating body (base drum)
DESCRIPTION OF SYMBOLS 10: Holding block 10a: Suction surface of a holding block 10b: Suction hole 11: 1st folding bar (1st folding member) 11P: Protruding member 12: 2nd folding bar 13: Pressing plate (pressing member) 14: 1st arm 15: Second arm 16: Base block 16G: Retraction groove 20A: First control mechanism 20B: Second control mechanism 21a: First rotating shaft 21b: Second rotating shaft 30: Plate control mechanism 31: First slider 31a: First 1 cam groove 32: second slider 32a: second cam groove 40: hollow shaft (support shaft) CL: axis of hollow shaft 40 41: fixed cylinder A0 to A7: rotational position F1 of base drum 2 outer surface (first Surface) F2: Wear surface (second surface)
K1: Rotation angle K2: Rotation angle L1: 1st distance L2: 2nd distance N: Wearing article (object) NC: Clamping part (center area) NE1: 1st edge part NE2: 2nd edge part N1: 1st Non-clamping portion (region on the first end side) N2: second non-clamping portion (region on the second end side)
P1: Standby position P2: Pressing position P3: Retraction position Ph1: First origin position Ph2: Second origin position Pe1: First folding position Pe2: Second folding position S1: Advancement direction of the pressing plate 13 S2: Retraction direction R1: First fold R2: Second fold RC: Center position between both folds

Claims (9)

A first drum and a second fold in a direction perpendicular to the longitudinal direction, the base drum having a base drum rotatably mounted around the support shaft and a folding unit disposed on the outer periphery of the base drum; A folding device for folding, wherein the folding unit comprises:
A holding base for holding the object in contact with a part of the first surface of the object;
By pushing a first end side region on the first end side from the first surface with respect to the first fold of the object, the first end side region of the object is between the two folds in the object. A first folding operation is performed in which the object is folded at the first fold so as to overlap the central region of the object, and the first folding operation is completed after moving to the second fold side beyond the central position between both folds. A first folding member;
The second end of the object is pushed by pushing a second end side region opposite to the first end of the object, which is closer to the second end than the second fold, from the first surface. A second folding operation is performed to fold the object at the second fold so that the portion side region overlaps the first end portion side region, and the second fold side is closer to the second fold side than the center position between both folds. And a second folding member that completes the folding operation.   2. The first arm according to claim 1, wherein the holding base rotates together with the base drum, the first arm for causing the first folding member to perform the first folding operation, and the holding base rotates together with the base drum. Accordingly, a second arm that causes the second folding member to perform the second folding operation is provided, and the rotation angle of the first arm is set larger than the rotation angle of the second arm. Folding device.   The first distance from the center of rotation of the first arm to the first folding member is greater than the second distance from the center of rotation of the second arm to the second folding member. A folding device for the article. In Claim 1, 2, or 3, each of the first and second folding members includes a bar extending in a direction parallel to the axis of the support shaft,
The first folding member includes a projecting member that extends along the first folding member and projects from the first folding member toward the first end portion when the first folding operation is completed. An article folding apparatus characterized by the above. 5. The first folding member according to claim 1, wherein the first folding member performs the first folding operation as the base drum rotates, and the second folding member moves in the second folding operation. A first control mechanism for starting a return operation of the first folding member after reaching the first end side region;
As the base drum rotates, the second folding member performs the second folding operation, the folding of the object by the first folding member is completed, and the first folding member is An article folding apparatus comprising: a second control mechanism that completes the second folding operation by the second folding member after starting the return operation to the original position before folding the object.   6. The holding base of each of the folding units according to claim 1, wherein the holding base has a plurality of suction holes for sucking and holding a central region between both folds on the first surface of the object. An apparatus for folding an article.   In any one of Claim 1 to 6, it moves to the direction which goes to the 2nd surface on the opposite side to the said 1st surface in the said object from a predetermined | prescribed standby position, The said in the said 2nd surface A pressing member is provided in contact with a part of the second surface in a state where the first and second end portions of the object are exposed, and sandwiching the object with the holding base. A folding device for the article. First and second folds in a direction perpendicular to the longitudinal direction of the object using a folding device having a base drum rotatably mounted around a support shaft and a folding unit disposed on the outer periphery of the base drum . A folding method that folds with a fold line,
Than the dimension from the first end to the first fold close to this, and the first end opposite the dimension from the second end to a second fold line close to this is set short,
The first folding member of the folding unit pushes the first end side region closer to the first end than the first fold of the target object from the first surface, thereby the first end side of the target object. After performing a first folding operation in which the object is folded at the first fold so that the region overlaps a central area between the folds in the object, and after moving to the second fold side beyond the center position between the two folds Completing the first folding operation;
The second folding member of the folding unit pushes, from the first surface, the second end side region on the opposite side of the first end portion of the object from the second end side to the second end side. Thus, the second end side region of the target object is folded at the second fold so that the second end side region overlaps the first end side region of the target object folded by the first folding operation. The folding method is characterized in that the folding operation is performed and the second folding operation is completed on the second fold side from the center position between both folds . Oite to claim 8, wherein the second folding members for folding said object at said second fold, after approaching the first end portion side region, characterized in that to start the return movement of the first folding member Folding method.

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