JP3193882B2 - Packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method and a packaging apparatus, and more particularly, to a packaging method and a packaging apparatus for sealing and packing confectionery boxes such as rectangular candy.

[0002]

2. Description of the Related Art Conventionally, in order to increase the quality of products and extend the expiration date, confectionery boxes such as candy are mainly packaged by a seal packaging machine for the purpose of keeping moisture out. FIG. 13 is a diagram showing a packaging method using a three-side sealing method called pillow packaging.

[0003] With reference to FIG.
5 is wrapped in a tubular shape by a wrapping paper 108, and the overlapping portion is bonded as a heat seal portion 51. Further, the length in the width direction of the wrapping paper 108 is longer than the length in the longitudinal direction of the article to be packaged 105, and is a surplus longitudinal portion 106a and a surplus longitudinal portion 106b. Then, as shown in (2) of FIG.
a, the end of the long excess portion 106b is heat-pressed to form a heat seal portion 53a and a heat seal portion 53b,
The package 105 is sealed and packaged. As described above, in the conventional pillow wrapping, the wrapping paper 108 is sealed at three places: the heat seal portion 51, the heat seal portion 53a, and the heat seal portion 53b.

However, in such a pillow package,
The seal width A of each of the heat seal portions 53a and 53b is longer than the length B in the width direction of the packaged object 105, which is wasteful in terms of space and is not preferable in terms of design. FIG. 14 is a diagram showing an outline of a packaging method performed to solve the problems of such pillow packaging.

[0005] Referring to FIG.
Is the same as that shown in the packaging method of FIG. 13 in that the packaged object 105 is wrapped in a tubular shape, and the overlapped portion is heated and pressed and bonded as a heat seal portion 51. Also in this wrapping method, the length of the wrapping paper 108 in the width direction is formed to be longer than the length of the article 105 to be wrapped, and both ends of the wrapping paper 108 have a long excess portion 106a and a long excess portion 106b (not shown). Is similar to the packaging method of FIG.

Next, from this state, as shown in FIG. 14 (2), the folded portion 55a and the folded portion 55b, which are so-called gusset finishes, are applied to the surplus longitudinal portion 106a.
Is formed. In this state, the upper surface and the lower surface of the surplus longitudinal portion 106a are heat-pressed and bonded to each other as the heat seal portion 57. Thereby, the width C of the heat seal portion 57 is obtained.
Does not become larger than the width D of the wrapping paper 108, so that the packaging is also neat in terms of design.

[0007] In the state of FIG. 14 (2), the function as a package is exhibited, but in order to make the package more compact, as shown in FIG. 14 (3), Fold the heat seal portion 57 downward or upward,
Therefore, by bonding or the like to the end face of the wrapping paper 108,
A compact package in which the heat seal portion 57 does not protrude outward can be realized.

[0008]

According to the packaging method shown in FIG. 14 as described above, a compact package which is preferable in terms of design and can be obtained is provided. Was not enough. That is, FIG.
As shown in FIG. 4 (1), in the so-called envelope-sealed heat seal portion 51, the front and back surfaces of the wrapping paper 108 are heat-sealed, and thus the adhesiveness is not sufficient. This is because the wrapping paper 108 is generally coated on only one side with polyethylene or the like having good weldability, and therefore, when heat-sealed between the front and back surfaces, the weldability differs. or,
In the case of envelope attachment, the packaged object 1 is
Since one end of the wrapping paper 108 is pressed directly against the wrapper 105, the wrapping paper 108 is easily affected by the temperature of the article to be packaged 105.

Therefore, as shown in FIG. 15, it is conceivable to attach so-called palms to the end portions 47a and 47b of the wrapping paper 108 instead of attaching them to envelopes. In the case where the wrapping paper is applied, the back surfaces of the wrapping paper 108 having good welding properties come into contact with each other, and since the wrapping paper 108 is not pressed against the wrapped object 105 at the time of heat sealing, the influence of the temperature of the wrapped material 105 or the like is not given. It is rare to receive. However, for the packaged object 105 having a rectangular parallelepiped shape,
It is not easy to attach the end portions 47a and 47b of the wrapping paper 108 together in an automatic wrapping machine.

Further, as shown in FIG. 14 (3), in the heat seal portion 57, four sheets of wrapping paper are stacked in the portion of "X", and the wrapping paper is stacked in the portion of "Y". In the “Z” portion, six sheets of wrapping paper were stacked in order to form the heat seal portion 51.
As described above, since the thickness of the wrapping paper is not uniform throughout the heat sealing portion 57, even if the wrapping paper is heat-pressed and heat-sealed, the sealing property is reduced.

[0011]

[0012] The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is that the wrapping paper is attached to both sides of a rectangular parallelepiped package by affixing both ends thereof.
It is an object of the present invention to provide a packaging device in which the degree of adhesion of the sealing portion is increased to improve the sealing property.

[0013]

[0014]

[0015]

[0016]

According to a first aspect of the present invention, a package having a rectangular parallelepiped shape including an upper surface, a bottom surface, both side surfaces, and both end surfaces is wrapped with wrapping paper. A packaging device for placing the packaged object on the bottom surface of the packaged object, a holding unit for holding the packaging paper placed on the upper surface of the packaged item, and a packaging device. Clamping means for clamping both sides of the packaged object via the wrapping paper while folding the wrapping paper in the directions of both sides of the packaged object; Means for pressing each of the lower portions from the outside to the inside thereof; and, with the pressing, the placing means contacted the inner surface of the wrapping paper as the portion of the wrapping paper moved inward. A first control unit for separating the object from the packaged object in a state, and a wrapping paper after the separation of the placing unit is completed. Both ends is obtained and a second control means for controlling the pressure means so as bonded inner surfaces.

With the inward movement of the portion of the wrapping paper by the pressing means, the placing means retreats in contact with the inner surface of the wrapping paper. Therefore, each of the ends of the wrapping paper is surely brought into contact with each other between the inner surfaces, and the wrapping papers are stuck together.

[0018]

[0019]

According to the first aspect of the present invention, since both ends of the wrapping paper are stuck together in a palm shape, a stable seal can be achieved, and the degree of sealing of the wrapping paper can be improved.

[0020]

FIG. 1 is a diagram showing a schematic configuration of a packaging machine 101 according to a first embodiment of the present invention.
Referring to the figure, a packaging machine 101 includes a package supply unit 103 to which a package 105 such as candy boxes or the like is supplied, and a wrapping paper (moisture-proof) for packaging the package 105. A wrapping paper transport unit 107 for supplying cellophane (KOP, thickness 30 μm) 108, and a pair of holding hands 113 a and 113 holding the packaged object 105 and the wrapping paper 108.
b, a packaging processing unit 109 for performing a seal packaging process while moving the package, and a package discharging unit 11 for discharging the packaged object 105 as a package wrapped by the wrapping paper 108.
And 1.

The holding hand 113 holding the package 105
a, the holding hand 113b moves on the circumference around the rotation shaft 104, and the packaging process in the later-described steps is performed. When the packaging process is completed, the packaged object 105 is discharged to the package discharge unit 111 as a package after the final packaging is completed in the process. FIG. 2 is a diagram showing a first processing content of the packaging process in the process of FIG. 1, in which (1) is a diagram of the packaged object 105 viewed from a plane, and (2) is a diagram of the packaged product. FIG. 3 is a front view of the package 105, and FIG. 3C is a perspective view of one end of the package 105.
Note that the following relationships (1) to (3) in FIGS. 3 to 9 are the same as those shown in FIG.

Referring to FIG. 2, a band-shaped wrapping paper 108 having a width necessary for wrapping packaged object 105 is placed on the upper surface of the leading end of packaged object 105 supplied to packaged product supply unit 103.
Are sent in intermittent motions for the length required to pack. Then, the push-up plate 17 rises from below the bottom surface of the package 105 and presses the package 105 and the wrapping paper 108 with the pressing plate 18 located above the wrapping paper 108. Then, the wrapping paper 108 is cut by a cutter by a length necessary for wrapping. The cut wrapping paper 1
08 is longer than the length of the packaged object 105 in both directions by the dimension of “A” in both directions.
The length B in the winding direction of the cut wrapping paper 108 is longer by about (20) mm than the entire circumference of the packaged object 105.

Thereafter, the packaged object 105 is lifted together with the wrapping paper 108 placed on its upper surface to a pair of holding hands 113a and 113b located at an upper portion at a constant speed and at equal intervals, and shown in the next step. Is held by the holding hands 113a and 113b. FIG. 3 is a diagram showing a second processing content of the packaging processing in the step of FIG.

From the step shown in FIG. 2, the wrapping paper 108 rises together with the article 105 while being pressed by the push-up plate 17 and the presser plate 18. And there is wrapping paper 10
Reference numeral 8 denotes a state in which the top surface and both side surfaces of the package 105 are wrapped and the tip is open (U-shaped), and the package 105 is held by the holding hands 113a and 113b together with the package 105. Is done. The width of the wrapping paper 108 in the width direction is formed to be longer than the length in the longitudinal direction (both end surface directions) of the article to be packaged 105 by "A" as described above. , Extra length 1
06b. Each length C of the wrapping paper 108 extending downward from both sides of the packaged object 105 is equal to or more than half the width W of the bottom surface of the packaged object 105 in the direction of both sides. I have.

FIG. 4 is a view showing a third processing content of the packaging processing in the step of FIG. From the state shown in FIG. 3, a pair of the center heater 16a and the center heater 16
b is driven so as to approach each other to push the surplus portions 45a and 45b of the wrapping paper 108 inward. When each of the surplus portion 45a and the surplus portion 45b of the wrapping paper 108 begins to bend so that a part thereof is along the bottom surface of the article 105 to be packaged, the center heater 16a and the center heater 16b move. The push-up plate 17 gradually moves downward and away from the article to be packaged 105 while maintaining a state in contact with the inner surfaces of the surplus portions 45a and 45b.
Therefore, the surplus portion 45a and the surplus portion 45b gradually approach each other while maintaining the vertical posture of each end.

Here, the push-up plate 17 is connected to the surplus portions 45a,
If it moves without contacting the inner surface of the surplus portion 45b, one of the inner surfaces of the surplus portion 45a and the surplus portion 45b falls down to the bottom surface side of the packaged object 105, and the inner surface of the other surplus portion overlaps thereover. It does not stick. FIG. 5 is a diagram showing the fourth processing content of the packaging processing in the step of FIG.

From the state shown in FIG.
6a and the center heater 16b move closer to the final position, the wrapping paper 108 covers the entire circumference of the packaged object 105, and the inner surfaces of the end portions 47a and 47b are in contact with each other. Length B of wrapping paper 108 in the winding direction
Is longer than the entire circumference of the packaged object 105,
Surplus part 45a, end part 47a of surplus part 45b, end part 47b
Extends almost vertically downward from the packaged object 105 as shown in FIG. In this state, the ends of the center heater 16a and the center heater 16b are heated, and the ends 47a and 47b of the wrapping paper 108 are welded to each other. here,
Since the inner surfaces where the end portions 47a and 47b are in contact with each other are coated with polyethylene or the like having good weldability, the heat sealability is improved.

FIG. 6 is a diagram showing the contents of the packaging process in the step of FIG. In the process of FIG.
The holding hands 113a and 113b that hold the holding member 05 are intermittently operated, so that their end portions 47a and 47b are held.
The wrapping paper 108 to which a part of the wrapping is welded is transported together with the article 105 to be packaged to the step shown in FIG. In this step, the center heater 11 in which the entire end portions 47a and 47b of the wrapping paper 108 are a pair of heating portions whose front ends are opened and closed.
5 to form a heat seal portion 19,
The jointing of the ends 47a and 47b is completed. As a result, the wrapping paper 108 is sealed in a state in which the wrapping paper 108 is in close contact with the entire circumference of the trunk of the article 105 to be packaged. In this state, as shown in FIG.
“a” has a rectangular tube shape that follows the shape of the article to be packaged 105.
When the heat sealing is completed, the packaged object 105 and the wrapping paper 108 are separated into the next process by the holding hands 113a and the holding hands 11a.
3b. During this movement, the heat seal portion 19 is moved backward by the guide plate (not shown) so as to follow the body of the packaged object 105. In this manner, the article to be packaged 105 is sealed with the wrapping paper 108,
That is, the center is sealed.

FIG. 7 is a diagram showing the contents of the packaging process in the step of FIG. From the state shown in FIG. 6, the side curling claws 21a,
The claw of the side hammering claw 21b is inserted, and the claw spreads on both sides, so that the extra length 10
6a is brought together so that its end becomes one character. In this state, the heater block 23a and the heater block 23b press the vertical surplus portion 106a from above and below so as to sandwich the one-character end of the long surplus portion 106a. Is temporarily attached to form a heat seal portion 24a. In addition, the longitudinal surplus portion 10 in the other portion of the wrapping paper 108
6b, the same processing is performed, and the abutted ends are temporarily attached. In the following steps, the same wrapping process is performed on both ends of the wrapping paper 108, and therefore only the wrapping process on the side of the surplus portion 106a of the wrapping paper 108 will be described below.

FIG. 8 is a diagram showing the contents of the packaging process in the step of FIG. In the process shown in FIG. 7, the wrapping paper 108 to which the end of the long surplus portion 106a is temporarily attached
Is further pressed from above and below by a pair of heater blocks 25a and 25b to a position closer to the end of the article 105 to be heat-sealed. As a result, the extra length 106a of the wrapping paper 108
A wider heat seal portion 27a is formed at the end of the seal member to ensure complete sealing.

FIG. 9 is a diagram showing the contents of the packaging process in the step of FIG. In the previous step, the wrapping paper 108
The packaged object 10 conveyed in a sealed state with the end of the extra length portion 106a of the
5 and the wrapping paper 108, the heat seal portion 27a is folded downward as shown in (3) by the lowering of the vertical folding claws 29. Then, as shown in (4), the longitudinal surplus portion 106
In the drawing of the heat seal portion 27a, the left portion is first folded as the left folding portion 35a by the lateral folding claw 31, and then the right portion is transformed into the right folding portion 33a by the guide plate 32 when proceeding to the next step. Collapsed. In this manner, the heat seal portion 27 is folded from the left and right to form a folded portion 36a. As described above, the surplus longitudinal portion 106a is folded and packed according to the rectangular shape of both end surfaces of the article 105 to be packaged. For this reason, the wrapping paper 108 can be wrapped in a shape along the article to be packaged 105 while securing the sealing properties at both ends thereof, and a compact wrapping process is realized.

FIG. 10 is a diagram showing the contents of the packaging process in the step of FIG. Referring to the figure, right fold 33a and left fold 3 formed in the previous step
The side heater 37a and the side heater 37b advance so as to sandwich 5a from both sides thereof, and the right fold portion 33a and the left fold portion 35a are heat-pressed and heat-sealed.
Thus, the surplus longitudinal portion 106a and the surplus longitudinal portion 106b of the wrapping paper 108 can be finished in the same shape as both side surfaces of the article 105 to be packaged.

FIG. 11 is a diagram showing the contents of the packaging process in the step of FIG. Wrapping paper 1 in the previous process
When the right folding part 33a and the left folding part 35a of 08 are heat-sealed, the packaged object 105 wrapped with the wrapping paper 108 is released from the holding hands 113a and 113b, and both ends thereof are transferred by the transfer rod 41a. It is moved to a state where it is held by the rod 41b, the transfer rod 41c, and the transfer rod 41d. Note that, in this state, the wrapping paper 108 wrapping the packaged object 105 is positioned 9 mm from the axial direction of the packaged object 105.
The wrapping paper 10 has been moved to a position rotated by 0 degrees, and the side heater 39a and the side heater 39b in this state have caused the wrapping paper 10 to rotate.
The eight folded portions 36a and 36b are heat-pressed and finally heat-sealed.

FIG. 12 is a diagram showing the contents of the packaging process in the step of FIG. The packaged object 105 and the wrapping paper 108 held by the transfer rod from the previous process are cooled by the cooling blocks 43a and 43b.
The right folding part 33a and the left folding part 35a of 8 are pressed and cooled. The cooling is performed in order to improve the finished state of the right fold 33a and the left fold 35a of the heat-sealed wrapping paper 108.

The cooling block 43a, the cooling block 4
3b is a water jacket system, but an air cooling system may be used instead. Further, in the above-described embodiment, the end of the long surplus portion 106a is forcibly attached to the side hammering claw 21 in the step shown in FIG.
a, although opened by the side hammering claw 21b, the packaged product can be secured to a certain degree by simply heat sealing the end portion and folding it without forcibly opening the end portion. Compactness can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a packaging machine according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a first processing content of a packaging processing in the process of FIG. 1;

FIG. 3 is a diagram showing a second processing content of the packaging processing in the step of FIG. 1;

FIG. 4 is a diagram showing a third processing content of the packaging processing in the step of FIG. 1;

FIG. 5 is a view showing a fourth processing content of the packaging processing in the step of FIG. 1;

FIG. 6 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 7 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 8 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 9 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 10 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 11 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 12 is a diagram showing the contents of a packaging process in the step of FIG. 1;

FIG. 13 is a view schematically showing a packaging method in a conventional pillow packaging.

FIG. 14 is a diagram schematically illustrating a conventional packaging method for forming and sealing a gusset.

15 is a perspective view assuming a case where both ends of a wrapping paper are attached to the packaged object of FIG.

[Explanation of symbols]

 16a, 16b ··· Center heater 17 ············································································································································ − · Heat seal portions 25a, 25b Heater blocks 27a, 27b Heat seal portions 105 Packaged materials 106a, 106b Longer surplus portions 108 Wrapping paper 113a, 113b Nipping Hand 115... Center heater The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A packaging device for packaging an object having a rectangular parallelepiped shape having an upper surface, a bottom surface, both side surfaces, and both end surfaces with a wrapping paper, wherein the object to be packaged is placed on the bottom surface of the object to be packaged. Placement means for placing, holding means for holding the wrapping paper placed on the upper surface of the wrapped article, and folding the wrapped paper placed in the direction of both sides of the wrapped article. Holding means for holding both sides of the packaged object via the wrapping paper; and each of the folded portions of the wrapping paper, which are lower than the both sides of the packaged object, are placed outside of them. Means for pressing inward from one side, and, as the portion of the wrapping paper moves inward with the pressing, the placing object is in contact with the inner surface of the wrapping paper; A first control means for separating the mounting means from the first control means; A second control means for controlling the pressing means so that both ends of the wrapping paper are bonded to each other on the inner surface.