JP2934843B2 - Packaging method of the package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of packaging a paper, a steel plate, a roll of a film in which a film is wound into a roll, and the like.

[0002]

2. Description of the Related Art A package 1 made of paper, steel plate, or film wound into a roll is used as a wrapping sheet of kraft paper, laminated paper, or the like.
In the case of wrapping with 2, the wrapping sheet 2 is wrapped around the outer periphery of the wrapped body 1 and the end of the wrapped sheet 2 is glued as shown in FIG. The ear part 3 is folded inward along the side surface of the packaged object 1 in a folded manner. After this folding, a side sheet 4 such as a circle is attached to the outside of the folded portion 3a on both sides.

In this type of wrapping operation, a folding step of winding a wrapping sheet 2 around the outer periphery of a packaged object 1 and then folding both ears 3 of the wrapping sheet 2 in an inward fold form is as follows.
This is the most time-consuming step in the entire packaging operation, and this folding step is a major factor in determining the quality of the work efficiency and the quality of the finished state after packaging. Therefore, as a folding device for folding the ear portion 3 along the side surface of the packaged object 1 as disclosed in Japanese Patent Laid-Open No.
Various types have been proposed as disclosed in Japanese Patent Application Laid-Open No. 57-68315, Japanese Utility Model Application Laid-Open No. 55-409, and the like.

[0004]

In the conventional wrapping method, the wrapping sheet 2 is wound around the outer periphery of the wrapped object 1 as it is, and thereafter, the lugs 3 projecting from the wrapped object 1 in a cylindrical shape.
Is folded inward by a folding device. Therefore, the structure of the entire folding device becomes very complicated, and at the same time, it takes a long time to fold the packaging sheet 2, resulting in a decrease in work efficiency.

[0005] In addition, since the ears 3 protruding from the package 1 are folded inward while the package sheet 2 is wound around the package 1, an unnecessary external force is applied to the package 1 at the time of folding. Therefore, when the package 1 is made of carbonless paper, pressure-sensitive adhesive paper, thermal paper, or the like, the package 1 may be damaged. In addition, despite the use of a complicated folding device and sufficient time for folding, the folded portions are poorly aligned, exhibit a messy state, and have poor finish after packaging.

The present invention has been made in view of such conventional problems,
By pre-folding the fold on the ear side of the wrapping sheet, it is possible to easily fold the packaged object 1 without damaging the ear side when folding the ear side, thereby simplifying the folding device, improving work efficiency, It also aims to improve the finishing accuracy after packaging.

[0007]

According to the present invention, a wrapping sheet 2 is wrapped around the outer periphery of a packaged object 1 so that a plurality of folds 3a are formed in a circumferential direction along the side surface of the packaged object 1. In the method for packaging a packaged object in which the ear 3 side of the packaging sheet 2 is folded along the horizontal fold b for folding and the diagonal fold c, and the packaged object 1 is wrapped with the packaging sheet 2, Before winding on the package 1,
Rotors 40, 4 of crease applying means 14 arranged on both sides
1, 48, 49, 58, 59 are rotated in the feeding direction of the wrapping sheet 2 and are rotated by the rotators 40, 41, 48, 49, 58, 59 to positions corresponding to the ends of the packaged object 1. A mountain-folded vertical fold a is projected in the direction opposite to the winding side of the packaging sheet 2 in the feeding direction, and then the outer side of the vertical fold a on the side of the ear 3 and the feeding of the packaging sheet 2 are performed. The horizontal fold b and the diagonal fold c are placed at positions sequentially spaced at predetermined intervals in the direction such that the horizontal fold b has a valley fold shape opposite to the vertical fold a. Further, in the invention according to claim 1, when the folds a, b, and c are formed in the packaging sheet 2 by the rotating bodies 40, 41, 48, 49, 58 and 59, the package 1 A vertical fold a is formed at a position corresponding to the end so as to form a ridge protruding in a direction opposite to the winding side of the packaging sheet 2 along the feeding direction, and then an outer ear portion than the vertical fold a is formed. The horizontal fold b and the diagonal fold c are formed at positions on the third side and at predetermined intervals in the feed direction of the packaging sheet 2 so as to form ridges projecting toward the winding side of the packaging sheet 2.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 13 illustrate a first embodiment of the present invention. In FIG. 1, reference numeral 5 denotes a material roll of the packaging sheet 2;
The feeding portion 6 is rotatably supported around the axis. 7 is a guide means, which has a number of guide rollers for guiding the packaging sheet 2 fed out from the raw roll 5 in the longitudinal direction.
It consists of 8 groups. Reference numeral 9 denotes a wrapping folding part. The wrapping folding part 9 has a pair of receiving rollers 10 and 11 for rotatably receiving the packaged object 1 from below and a winding means for winding the packaging sheet 2 around the outer periphery of the packaged object 1. 1
2 and a wrapping sheet 2 wrapped around the outer periphery of the
Folding means 13 for folding both ear portions 3 inward.

Reference numeral 14 denotes a fold applying means 14 for forming a fold for folding in the wrapping sheet 2, and while the wrapping sheet 2 is guided from the feeding section 6 to the wrapping folding section 9,
Creases a, b, c on both ears 3 side of packaging sheet 2 according to 1.
, A first fold imparting section 15, a second fold imparting section 16, and a third fold imparting section 17 are provided. As shown in FIG. 2, the winding means 12 includes a pair of receiving rollers 1.
And the pulleys 2 of the bending arms 18 and 19 from the respective receiving rollers 10 and 11 sides.
0,21,22,23 and winding belts 24,25 wound around the bending arms 18,19.
Are supported by the cylinders 28 and 29 so as to be able to move up and down. The winding means 12 is arranged at the center of the receiving rollers 10, 11 in the axial direction.

As shown in FIGS. 3 and 4, the folding means 13 wraps the packaging sheet 2 wound around the outer periphery of the packaged object 1.
A pressing belt 30 for pressing the package sheet 1 at both ends of the package 1 on the outer peripheral side of the package 1, and with the pressing belt 30 pressing the packaging sheet 2, ears 3 on both sides of the packaging sheet 2. And a receiving member 32 that receives each ear portion 3 of the packaging sheet 2 from below in the vicinity of the upper side of the folding roller 31. . The pressing belt 30 is wound around a driving pulley 33 and two driven pulleys 34 and 35 pivotally supported by a support frame (not shown), and the support frame is attached to the package 1 so as to be movable in a perspective direction. Have been. The folding roller 31 has a tapered shape and has a
It is arranged radially along the side surface of the packaged object 1 between the driven pulleys 34 and 35, and is supported rotatably about an axis 36. The receiving member 32 is rod-shaped, and
Are provided in parallel with the axis of. In addition, folding roller
The receiving member 32 is provided movably in the near and far directions with respect to the side surface of the packaged object 1.

The first fold imparting portion 15 is for inserting a vertical fold a in the longitudinal direction of the packaging sheet 2 at a position corresponding to both ends in the axial direction of the packaged object 1, and as shown in FIG. It comprises a pair of rotating shafts 38, 39 arranged in the width direction on both the front and back sides of the packaging sheet 2, and a concave roller 40 and a convex roller 41 provided corresponding to the rotating shafts 38, 39, respectively. The package sheet 2 is sandwiched from both sides in the front and back directions between the circumferential grooves formed on the outer periphery of the concave and convex rollers 40 and 41 and the ridges, and the protrusions projecting to one side in the front and back directions of the package sheet 2. The strip is formed so that a mountain-folded vertical fold a protruding on one side in the front and back direction of the packaging sheet 2 is formed. The rotating shafts 38 and 39 are linked via gears 42 and 43 at one end, and are driven by a servomotor 45 via a gear 44.

The second fold imparting section 16 inserts the horizontal folds b in the width direction from the respective vertical folds a into the packaging sheet 2 on the side of the ears 3 at a predetermined layout pitch P, as shown in FIGS. 7 and 8. Thus, like the first fold imparting portion 15, it is constituted by the rotating shafts 46 and 47 and the concave and convex rollers 48 and 49, and the gears 50, 51,
Driven by a servomotor 53 via 52. The concave / convex rollers 48, 49 are provided with grooves 54 and projections 55 in the axial direction on the outer periphery thereof, and are arranged upside down unlike the first fold imparting portion 15. The rotating body is constituted by the concave / convex rollers 48 and 49.

The third fold imparting section 17 is a diagonal fold that is inclined in a direction opposite to the feeding direction of the packaging sheet 2 from the intersection of the vertical fold a and the horizontal fold b toward the ear 3.
c in the packaging sheet 2 as shown in FIG. 9 and FIG.
As shown in FIG. 2, the rotating shafts 56, 57 arranged in parallel on both sides of the packaging sheet 2 and concave / convex rollers 58, 59 provided on the rotating shafts 56, 57, respectively. Grooves 60 and protrusions 61 are formed on the outer periphery of the convex rollers 58 and 59 in a spiral direction. A rotating body is constituted by the concave and convex rollers 58 and 59. The horizontal fold b and the diagonal fold c are formed by sandwiching the packaging sheet 2 from both sides in the front and back directions between the circumferential groove formed on the outer periphery of the concave / convex rollers 48, 58, 49, 59 and the ridge. ,
A ridge projecting to the other side opposite to the ridge formed by the vertical fold a is formed in a valley fold shape opposite to the vertical fold a.

The rotating shafts 56 and 57 are independently disposed on both sides in the width direction of the packaging sheet 2 and are rotatably supported by a gear case 62.
4 and is driven by a servo motor 65 mounted on a gear case 62 via a gear 65a. The gear case 62 is supported by a movable frame 112 via an arm 110 extending above the packaging sheet 2 and a support shaft 111 fixed to the end thereof. The support shaft 111 is disposed above the inner ends of the concave / convex rollers 58 and 59, is supported by a movable frame 112 so as to be rotatable around its axis, and has a brake-equipped motor via gears 113 and 114. It is linked to 115. Therefore, if the motor 115 is rotated forward and backward,
Since the arm 110, the gear case 62, and the concave / convex rollers 58, 59 swing around the support shaft 111, the direction of the diagonal fold c can be arbitrarily adjusted. The movable frame 112 is slidably supported in a lateral direction via a guide (not shown), and is screwed with a screw shaft 116 supported in parallel with the guide. The screw shaft 116 has left and right reverse screw portions, and is linked to the motor 120 via gears 118 and 119 in a gear case 117 at one end. When the motor 120 is rotated in the normal and reverse directions, the pair of left and right concave and convex rollers 58 and 59 move in opposite directions, so that the distance between the two can be adjusted.

In the above configuration, when packaging the package 1 with the packaging sheet 2, the package 1 is supplied onto the pair of receiving rollers 10, 11 of the wrapping / folding portion 9, and the package 1 is supplied. While rotating in the direction of arrow A at a predetermined speed, the pair of bending arms 18 and 19 of the winding means 12 are moved to the cylinders 28 and 29.
And wrap the winding belts 24, 25
1 and rotate at the same peripheral speed. On the other hand, the wrapping sheet 2 fed from the material roll 5 is guided in the direction of arrow B through the guide means 7, and its leading end is supplied between the wrapped object 1 and the wrapping belt 24. Then the packaging sheet
2 is sandwiched between the wrapped object 1 and the wrapping belt 24 and guided from the wrapping belt 24 through the wrapping belt 25 in the direction of arrow A.
1 can be wrapped around.

While the packaging sheet 2 fed from the material roll 5 of the feeding section 6 is supplied to the winding folding section 9, the first, second and third fold applying sections 15, 16 of the fold applying means 14 are provided. , 17, a vertical fold a, a horizontal fold b, and a diagonal fold c are sequentially formed in the packaging sheet 2. That is, first, in the first fold applying section 15, two vertical folds a are formed by the pair of concave / convex rollers 40, 41 so as to correspond to both ends in the axial direction of the packaged object 1. Next, in the second fold applying section 16, the pair of concave / convex rollers 48 and 49 cause the vertical fold of the packaging sheet 2 to be folded.
A horizontal fold b is made at a predetermined pitch P on the side of the ear 3 than a. Then, after that, the pair of concaves /
Convex rollers 58 and 59 allow the inner end side to have vertical folds a and horizontal folds
b at a predetermined pitch P to fit each intersection with b
2 Make a diagonal fold c.

The folds b,
When c is inserted, as shown in FIGS. 11 and 12, when the diameter of the packaged object 1 is D, the perimeter is L, and the number of folds is N,
The pitch P of the lateral fold b is P = L / N = πD / N,
The angle α between the horizontal fold b and the oblique fold c is α = 1.
80 / N (degrees). Therefore, for example, if the diameter D of the packaged object 1 is 900 mm and the number of folds is 23, the pitch P
Is 123 mm and the angle α is 15.65 degrees. When the pitch P is determined, the number of rotations of the concave / convex rollers 48, 49, 58, 59 of the second and third fold applying sections 16, 17 is changed with respect to the feed speed of the packaging sheet 2. That is, as shown in FIG.
The pitch P can be changed by changing the driving characteristics of the 3,653 for increasing / decreasing operation, for example, the speeding-up operation time t.

When the folds b and c are formed on the packaging sheet 2 by the second and third fold applying portions 16 and 17, each concave / convex roller 4
When the grooves 54, 60 of 8,49, 58, 59 and the projections 55, 61 match, the peripheral speed is made to match the feed speed of the packaging sheet 2 and each fold b, Insert c. Therefore, no abnormal tension acts on the packaging sheet 2.
After the folds a, b, and c are formed in the packaging sheet 2 in this way, the packaging sheet 2 is supplied to the winding start position of the folding section 9. The leading end of the wrapping sheet 2 is wrapped around the body 1 to be wrapped and the wrapping belt 9 around the fold 9.
Pressing belt 30 before and after being sandwiched between
And the pressing sheet 30 presses the packaging sheet 2 against the outer peripheral side of the packaged object 1.

When the wrapping sheet 2 starts to wrap around the outer periphery of the packaged object 1 and the ears 3 on both sides of the wrapping sheet 2 reach the folding roller 31, then the folding roller 31 and the receiving member
32 is projected toward the side surface of the package 1, and the folding roller 31 presses the ear 3 of the packaging sheet 2 against the side surface of the package 1. Then, since the folds a, b, and c are already formed on the ears 3 side of the packaging sheet 2, first, as shown in FIG. Is folded inward, and then from the folds b and c, are successively folded along the side surface of the packaged object 1 in a folded manner.

[0020] At this time, for example, as shown in FIG. 12, the bent portion 2b in the longitudinal fold line a ₁ is broken inwardly along the sides of the package 1, the following transverse fold b ₁ becomes broken valley , skewed fold c ₁ is broken mountain, following the bent portion 2a is before the bent portion
It overlaps the upper side of 2b. Therefore, the wrapping sheet 2 is
At the same time, both ears 3 can be sequentially folded along the side surface of the packaged object 1. Further, at this time, since the packing sheet 2 is pressed against the outer peripheral side of the packaged object 1 at both ends of the packaged object 1 by the pressing belt 30, protrusions are formed on the outer peripheral portions of both ends of the packaged sheet 1 as shown in FIG. Part 2c
There is nothing you can do.

On the other hand, since the ears 3 of the packaging sheet 2 are supported from below by the receiving member 32 at the time of folding, even when the ears 3 are folded by the folding roller 31, the effect is not affected by the influence of the upper side before the winding. The packaging sheet 2 can be smoothly wound around the packaged object 1 without reaching the packaging sheet 2, and
Thereafter, the ears 3 of the packaging sheet 2 can be securely and orderly folded along the side surfaces of the packaged object 1. If the folds a, b, and c are previously formed in the packaging sheet 2 in conformity with the packaging target 1, the packaging sheet 2 is wound around the packaging target 1 and then protrudes from both ends of the packaging target 1. When the ears 3 are folded, the ears 3 can be easily folded inward and folded.

Therefore, even if the package 1 is made of a roll of carbonless paper or the like, a large external force is not applied to the package 1 so that the package 1 can be quickly packaged without damage. Also, because it is easy to fold,
The folding device can be simplified accordingly, work efficiency is remarkably improved, and the finished state after packaging is good, and the finished accuracy is also improved. The packaging sheet 2 is cut at an appropriate length, and its ends are fixed by gluing. After the ears 3 are folded, the packaged object 1 is sent to the next process,
If the side sheet is attached, all the packaging work is completed.

FIGS. 14 and 15 show a second embodiment of the present invention, in which the folding means 13 is constituted by a folding roller 69 having a flange 68. FIG. The folding rollers 69 are provided at both ends of the rotating shaft 70, press the packaging sheet 2 against the packaged object 1 side, and fold the ears 3 inward along the side surfaces of the packaged object 1 with the flanges 68 thereof. ing. The rotating shaft 70 is supported by a swing arm 71 that can swing up and down. If the folds a, b, and c are previously formed in the packaging sheet 2, the folding roller 69 having such a flange 68 can be used.
However, the packaging sheet 2 can be easily and reliably folded. In this case, after wrapping the wrapping sheet 2 around the outer periphery of the packaged object 1, the ears 3 may be folded, or the wrapping sheet 2 may be wrapped around the outer circumference of the wrapped body 1 and simultaneously with the ears.
3 may be folded.

FIGS. 16 to 18 show a third embodiment of the present invention, in which the packaging sheet 2 with the folds a, b, c is inserted into the packaged object 1.
After the end is glued around the outer periphery of the package 1, the ear 3 is folded along the side surface of the packaged object 1 by the folding means 13. This folding means 13
Folding belt 74 between drive pulley 72 and driven pulley 73
Is wound around the driven pulley 73,
75 and a pressing roller 76 are provided so as to be integrally rotatable.

These are mounted together with the receiving member 32 on a movable frame 77 which can be moved back and forth in the horizontal direction. The receiving rollers 10 and 11 are mounted on a cart 78, and the cart 78 is connected to a connecting rod 79.
And move along the rail 80. 81 is a pressing roller. In this case, the driven pulley 73, the bending protrusion 75, and the pressing roller 76 are rotated in synchronization with the speed of rotation about the axis of the packaged object 1. Then the two horizontal folds where the bending projection 75 is adjacent
The ear 3 is grasped between the b, and the rotation causes the ear 3 of the packaging sheet 2 to be bent inward from the vertical fold a along the side surface of the packaged object 1. Then, when the packaged object 1 further rotates,
The portion bent by the bending protrusion 75 is completely folded while the folding belt 74 pulls inward, and the pressing roller 76 suppresses return after folding. Therefore, it is suitable when the packaging sheet 2 is thin and can be finished tightly.

FIGS. 19 and 20 show a fourth embodiment of the present invention, and illustrate a case where a package 1 having a small axial dimension is packaged. In this embodiment, the dimensions (diameter and width) of the package 1 supplied from the package supply unit 97 are measured,
A preferred packaging sheet 2 is selected from a plurality of raw rolls 5. Then, while the packaging sheet 2 fed from the material roll 5 is sent to the winding section 96 via a number of guide rollers 92, a guide conveyor 93, etc. of the guide means 7, each of the wrapping means 14 applies the wrapping sheet 2 to the packaging sheet 2. Insert folds a, b, and c.

In this case, the fold applying means 14 includes a first fold applying section 15 and a second fold applying section 16 on the left and right, and a third fold applying section 17 is arranged adjacent to the lower side thereof. That is, as shown in FIG. 20, the rotating shafts 122 and 123 are arranged in parallel on the upper and lower sides of the packaging sheet 2, and the rotating shafts 122 and 123 are arranged in parallel.
The concave / convex rollers 40, 41 of the first fold applying section 15 are rotatably fitted on the third fold applying section 15, and the concave / convex rollers 40, 41 of the second fold applying section 16 are attached to the respective rotating shafts 122, 123 outside the concave / convex rollers 40, 41.・ The convex rollers 48 and 49 are fixed. The convex roller 41 of the first fold imparting portion 15 is driven at the same speed as the packaging sheet 2 by a servomotor 127 via a pulley 124, a belt 125, and a pulley 126, and the concave roller 40 has a friction portion such as rubber on the outer periphery. Then, it rotates at the same speed as the packaging sheet 2. Each rotating shaft 122,123 is driven by a servomotor 131 via gears 128,129,130. The third fold imparting section 17 is the same as in the first embodiment.

After the folds a, b, and c are formed, the packaging sheet 2 is cut by a cutter 94 at a position of a predetermined winding length, and glue is applied to the rear end thereof by a glue ejection gun 95. 2 is supplied by the supply conveyor 108 onto the receiving rollers 10 and 11 of the winding section 96. In the wrapping section 96, the wrapped object 1 supplied from the wrapped object supply
After being placed on the upper side, the winding rollers 106 and 107 on both sides thereof are raised to the position of the imaginary line, whereby the packaging sheet 2 is wound around the outer periphery of the packaged object 1 and the ends are glued.

In the package supply unit 97, a pair of stoppers
98,99 are raised and lowered alternately, and the package
1 are supplied to the winding portion 96 one by one while being guided by a pair of left and right guide rails 101 so as not to fall. The packaged object 1 around which the packaging sheet 2 is wound is a pair of receiving rollers.
10 and 11 are sent to the next folding section 102 while being placed on the top, and while the packaged object 1 is being rotated by the folding section 102, the ear 3 of the packaging sheet 2 is folded by the folding belt 103 to the packaging sheet.
Fold it inwards along the side of 2. Then, the folded packaging sheet 2 is further sent to the side sheet attaching section 104, and the side sheet 4 is attached from above the ears 3 of the folded packaging sheet 2. The side sheet 4 is the mounting table 105
Several kinds are prepared on the upper side, and a suitable side sheet 4 is sucked by a disk 109 from among them, and then the disk 109 is directed to the side of the package 1 to be packaged 1 with the disk 109 directed toward the side of the package 1. Move and paste. This completes the packaging of the package 1.

In the embodiment, the case where the packaging sheet 2 is fed out from the material roll 5 and supplied is exemplified. However, the same can be applied to the case where the packaging sheet 2 cut into unit lengths in advance is used. In that case, folds a, b,
It is also possible to put c first and supply it one by one. The same can be applied to a case where two packaging sheets 2 are supplied while being shifted in the width direction, and the ears 3 on the opposite side of each packaging sheet 2 are folded and packaged. Further, each of the fold applying portions 15, 16, 17 of the fold applying means 14 is configured to be adjustable in the left and right direction by an adjusting means having a structure as shown in FIG. It is desirable that the distance between the left and right folds a, b, and c can be adjusted according to the axial dimension of 1.

[0031]

According to the first aspect of the present invention, the packaging sheet 2 is wound around the outer periphery of the packaged object 1, and a plurality of folds 3a are formed in the circumferential direction along the side surface of the packaged object 1. So that the ear 3 side of the packaging sheet 2 can be folded
b and the folding along the diagonal fold c, and in the packaging method for packaging the package 1 with the packaging sheet 2, before winding the packaging sheet 2 around the package 1, The rotating bodies 40, 41, 48, 49, 58, 59 of the fold applying means 14 arranged on both sides are rotated in the feeding direction of the packaging sheet 2, and the rotating bodies 40, 41, 48, 49, 58, 59 are rotated.
Thus, a mountain-folded vertical fold a protruding in the feeding direction on the side opposite to the winding side of the packaging sheet 2 is inserted at a position corresponding to the end of the packaged object 1, and then the vertical fold a The horizontal fold b and the diagonal fold c are arranged on the outer ear 3 side and at positions sequentially spaced at predetermined intervals in the feed direction of the packaging sheet 2 so that the horizontal fold b has a valley fold shape opposite to the vertical fold a. , The following remarkable effects are obtained.
Before winding the packaging sheet 2 around the package 1, a vertical fold a is formed along the feed direction at a position corresponding to the end of the package 1, and on the side of the ear 3 outside the vertical fold a, Horizontal folds at predetermined intervals in the feed direction of the packaging sheet 2
b and diagonal fold c are inserted.
The work of folding the side 3 in a folded manner along the side surface of the packaged object 1 becomes easier than before, and when the ear part 3 is folded, a large external force is applied to the packaging sheet 2 to break or The packaged object 1 is not damaged by a large external force applied thereto, and furthermore, the folding device for the same can be simplified, the work efficiency can be improved, and the finishing accuracy after packaging can be improved. . In particular, the vertical fold a is inserted into a mountain fold projecting from the side opposite to the winding side of the packaging sheet 2, and the horizontal fold b is formed into a valley fold opposite to the vertical fold a. When the side is folded in a folded manner along the side surface of the package 1, the ear 3 of the packaging sheet 2 can be easily folded by guiding it along the side surface of the package 1.
At the position corresponding to the end of the packaged object 1, the packaging sheet
A mountain-fold vertical fold that protrudes from the side opposite to the winding side of 2.
a, and the packaging sheet 2 is wound around the package 1 to be packaged, so that the outer rim 3 side from the vertical fold a is aligned with the vertical fold a corresponding to the end of the package 1. It can be easily and reliably folded along the side surface of the packaged object 1. For this reason, when packaging the packaged object 1 having an angular end, the package can be tightly packaged in a square shape along the shape of the end of the packaged object 1, and the finishing accuracy after packaging is further improved. By rotating the rotating bodies 40, 41, 48, 49, 58, 59 of the crease applying means 14 arranged on both front and back sides of the packaging sheet 2 in the feeding direction of the packaging sheet 2, the rotating bodies 40, 4
1, 48, 49, 58, 59 to make each fold a, b, c
The folds a, b, and c can be quickly inserted without applying unnecessary external force to the packaging sheet 2, and the efficiency of the crease applying operation can be increased easily and speedily while reducing damage to the packaging sheet 2. is there. When putting the folds a, b, and c on the packaging sheet 2, first put the vertical fold a, and then put the horizontal fold
b and the diagonal fold c, the horizontal fold b and the diagonal fold c
Is not attached, and the wrapping sheet 2 is unlikely to meander even though the vertical fold a is formed by the rotating bodies 40 and 41, and the vertical fold a is formed while increasing the feeding speed of the packaging sheet 2. It can be inserted straight and easily along the feed direction. Moreover, when the horizontal fold b and the diagonal fold c are formed, there is a vertical fold a at a portion corresponding to the inner end side, so that wrinkles and the like are less likely to be generated on the packaging sheet 2 and compared with those without the vertical fold a. As a result, wrinkles and the like of the packaging sheet 2 can be minimized. In particular, the vertical fold a is inserted in a mountain fold shape protruding on the side opposite to the winding side of the packaging sheet 2, and the horizontal fold b
Into the valley fold opposite to the vertical fold a.
a and the horizontal fold b in a mountain fold or valley fold so as to protrude on the same side in the front and back direction of the packaging sheet 2, even if the feeding speed of the packaging sheet 2 is increased,
2 meanders or wrinkles on the packaging sheet 2 are reduced, and the rotating bodies 40, 41, 48, 49, 5
According to 8,59, it is possible to further promote the efficiency and speed of the crease applying work in combination with the provision of each crease a, b, c. According to the present invention as set forth in claim 2, the rotating body, 40, 41, 48, 4
When the folds a, b, and c are formed in the packaging sheet 2 by 9, 58, and 59, the wrapping sheet 2 protrudes along the feeding direction at a position corresponding to the end of the packaged object 1 in a direction opposite to the winding side of the packaging sheet 2. A vertical fold a is formed so as to form a protruding ridge portion, and then the packaging sheet is positioned on the side of the ear 3 outside the vertical fold a and sequentially at predetermined intervals in the feeding direction of the packaging sheet 2. Two
Side folds so that ridges projecting to the winding side of
Since b and the diagonal fold c are formed, the following remarkable effects are obtained. The vertical fold a is inserted so as to form a ridge protruding on the side opposite to the winding side of the packaging sheet 2, and the horizontal fold b and the diagonal fold c are inserted so as to form a ridge protruding toward the winding side of the packaging sheet 2. So each fold a,
Compared to the case where b and c are placed on the same side in the front and back direction of the packaging sheet 2 in a mountain fold or valley fold, even if the feeding speed of the packaging sheet 2 is increased, the packaging sheet 2 meanders or wraps. The wrinkles and the like on the sheet 2 are less likely to occur, and the folds a, b, and c are formed by the rotating bodies 40, 41, 48, 49, 58, and 59.
To improve the efficiency of the crease application work,
Higher speed can be more easily promoted. Especially packaging sheet 2
Each fold a, b, c is formed by forming a protruding portion in the wrapping sheet 2 compared with a case where each fold a, b, c is formed simply by forming it into a mountain fold or a valley fold. When the body 1 is wrapped, the ear 3 side of the wrapping sheet 2 can be easily folded along the side surface of the body 1 to be wrapped, so that the wrapping is easy and the finished state can be improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram of winding means showing a first embodiment of the present invention.

FIG. 3 is a configuration diagram of a folding unit showing a first embodiment of the present invention.

FIG. 4 is a front view of the folding means according to the first embodiment of the present invention.

FIG. 5 is an explanatory view of a folded state showing the first embodiment of the present invention.

FIG. 6 is a configuration diagram of a first fold imparting unit according to the first embodiment of the present invention.

FIG. 7 is a configuration diagram of a second fold imparting unit according to the first embodiment of the present invention.

FIG. 8 is a side view of a second fold imparting portion showing the first embodiment of the present invention.

FIG. 9 is a plan view of a third fold imparting portion showing the first embodiment of the present invention.

FIG. 10 is a configuration diagram of a third fold imparting unit according to the first embodiment of the present invention.

FIG. 11 is an explanatory diagram of a fold showing the first embodiment of the present invention.

FIG. 12 is a perspective view of a folded state showing the first embodiment of the present invention.

FIG. 13 is a control characteristic diagram showing the first embodiment of the present invention.

FIG. 14 is a side view of the folding means according to the second embodiment of the present invention.

FIG. 15 is a front view of folding means showing a second embodiment of the present invention.

FIG. 16 is a side view of the folding means according to the third embodiment of the present invention.

FIG. 17 is a front view of folding means showing a third embodiment of the present invention.

FIG. 18 is a plan view of a folding means showing a third embodiment of the present invention.

FIG. 19 is an overall configuration diagram showing a fourth embodiment of the present invention.

FIG. 20 is a configuration diagram of an entire fold imparting section showing a fourth embodiment of the present invention.

FIG. 21 is a perspective view showing a packaged state.

[Explanation of symbols]

 1 Packaged object 2 Packaging sheet 3 Ears 7 Guide means 9 Winding / folding unit 12 Winding means 13 Folding means 14 Folding means a Vertical fold b Horizontal fold c Diagonal fold

Claims (2)

(57) [Claims] A wrapping sheet (2) is wound around the outer periphery of a packaged object (1), and a plurality of folds (3a) are formed in a circumferential direction along the side surface of the packaged object (1). Lateral folds (b) and diagonal folds for folds at the ear (3) side of the packaging sheet (2)
Fold along (c), and wrap the
In the method of packaging a package to be packaged (1), before winding the packaging sheet (2) around the package (1),
The rotating bodies (40), (41), (48), (49), (58), and (59) of the crease applying means (14) arranged on both the front and back sides of (2) are moved in the feeding direction of the packaging sheet (2). Rotate this rotating body (40) (41), (48) (4
According to 9), (58) and (59), a mountain-folded vertical projecting to a position corresponding to the end of the packaged object (1) in the feeding direction on the opposite side to the winding side of the packaging sheet (2). The fold (a) is inserted, and then at a position outside the vertical fold (a) on the side of the ear (3) and at predetermined intervals in the feed direction of the packaging sheet (2),
A method for packaging an object to be packaged, comprising forming a horizontal fold (b) and a diagonal fold (c) such that the horizontal fold (b) has a valley fold shape opposite to the vertical fold (a). 2. When the folds (a), (b) and (c) are inserted into the packaging sheet (2) by the rotating bodies (40) (41), (48) (49), (58) and (59), A vertical fold (a) is formed at a position corresponding to the end of the body (1) so as to form a ridge projecting in the feeding direction on the side opposite to the winding side of the packaging sheet (2). The packaging sheet on the side of the ear (3) outside the vertical fold (a)
The horizontal folds (b) and the diagonal folds (c) should be formed at positions sequentially spaced at predetermined intervals in the feeding direction of (2) so that a ridge projecting toward the winding side of the packaging sheet (2) is formed. The method for packaging an object to be packaged according to claim 1.