JPH07112843B2 - Packaging equipment - Google Patents

Description

The present invention relates to a packaging device for packaging a rectangular parallelepiped work with paper.

[Conventional technology]

The wrapping of a rectangular parallelepiped work with paper has been widely performed. Various attempts have been made to automate the packaging work in order to perform the packaging efficiently.

[Problems to be Solved by the Invention]

In this type of packaging work, the size range of a rectangular parallelepiped work that can be handled by one packaging machine is limited to about 1: 2. As the size range becomes wider, it is very difficult for one component to accommodate all sizes and to require a similar finished state.

In order to wrap the work with paper without damaging it, it is better to wrap the work only when it is transported to the next process, especially when the work is a wide sheet and has a weak stiffness. There is currently no satisfactory packaging mechanism.

INDUSTRIAL APPLICABILITY The present invention is a packaging device for packaging a rectangular parallelepiped work as described above, and even if the work size range is 1: 3 or more, the work can be packaged by one device, and the work is not damaged. The purpose is to obtain a packaging device with a good finish.

[Means for Solving the Problems]

The present invention has been reached as a result of various studies by the present inventors in view of the above objects.

That is, the gist of the present invention is a device for wrapping a rectangular parallelepiped work with paper, the first folding section for folding the paper along a pair of opposite side surfaces of the rectangular parallelepiped work placed on the paper, and the work. And a second folding section that folds the paper along the other pair of side surfaces of the paper, the first folding section moves up to the vicinity of the center of the upper surface of the work by moving the first folding section upward from the lower side of the paper. A pair of folding rolls to fold,
The second folding unit comprises an ear pressing plate that presses the pair of unfolded paper ears along the side surface of the work from above and the conveyer that conveys the work while pressing the folded paper. The pressing plate that folds up the ears held by the pressing plate from below and presses against the ears pressing plate, and after pulling out the ears pressing plate, the pressing plate protrudes to the upper side of the work with the ears of paper pressed against the side surface of the work. The packaging device is characterized by comprising an edge folding plate that folds the ears along the work, and the device has a paper fastening portion that holds the end portion of the paper folded at the second folding portion.

Hereinafter, the present invention will be described with reference to the drawings showing the embodiment bear.

1 (a) to (c) are explanatory views showing the order of folding at the first folding portion of the packaging device of the present invention, and FIGS. 2 (a) to (c).
(C) is an explanatory view showing the order of folding at the second folding portion. In FIG. 2, the left half is omitted because it is actually a symmetrical object. 3 (a) to 3 (c) are explanatory views showing the sequence of work packaging by the device of the present invention.

The rectangular parallelepiped work (1) is placed on the wrapping paper (2) in advance as shown in Fig. 3 (a) before wrapping, and in that state, the lower belt conveyor (3) shown in Fig. 1 is used. The present invention device is conveyed to a predetermined position of the first folding section.

The first folding section has a pair of folding rolls (4) and (4 ') for folding the paper along a pair of opposite side surfaces of the work, as shown in Figs. 1 (a) to (c). ing. The folding rolls (4), (4 ') are each formed of two rolls, and the work and the paper are conveyed until the work and the paper are conveyed to the predetermined position for folding by the lower belt conveyor (3). Are accommodated as indicated by the dotted lines in the accommodating portions (5) and (5 ') which are partially concave on the lower belt conveyor (3) so as not to hinder the movement of the.

When the work and the paper reach a predetermined position, the lower belt conveyor (3) stops, and the folding rolls (4) and (4 ') correspond to the height of the work from the lower side of the paper as shown in Fig. 1 (a). And rise to the height calculated in advance.

Next, as shown in FIG. 1 (b), the folding rolls (4), (4 ')
Respectively move toward the center of the work while descending to a height at which the work comes into contact with the work, and then move the paper to a position near the center of the top surface of the work with the roll sandwiching the work.
Further, as shown in FIG. 1 (c), the folding rolls (4),
When (4 ') moves to near one end of the upper surface of the work, the paper is folded along the work, and as shown in FIG. 3 (b), the folding of the paper on the pair of opposite side surfaces of the work is completed.
Immediately after the rolls (4) and (4 ') have moved to one end of the upper surface of the work, the upper presser belt conveyor (6) presses the work from above, and the lower belt conveyor (3) and the upper presser belt conveyor (6) have the same speed. Driven by, the work is moved to the second folding portion (not shown) on the left side of FIG. The conveyor may be any one as long as it can convey the work to the second folding portion while pressing the folded paper, and is not limited to the belt conveyors (3) and (6).

In addition, the folding rolls (4), (4) at the first folding portion
If the length of the workpiece is longer than the lateral length of the maximum size workpiece (1) to be applied to this device in the lateral direction of the workpiece, a change is required if the size of the workpiece changes in the lateral direction of the workpiece. However, if it changes in the traveling direction and the vertical direction, the size is changed as follows.

If there is a change in the traveling direction, the storage parts (5), (5 ') of the folding rolls are moved in the traveling direction so that the positions of the folding rolls (4), (4') at the start of the packaging are different from the work. When changing in the up and down direction so that they are in front of and behind the work respectively, the folding roll (4),
It is sufficient to change the height of (4 ') when rising. It is preferable to carry out these movements and changes using computer control or the like because it is not necessary to stop the packaging device.

The work folded as shown in FIG. 3 (b) is fed to the second folding section by the belt conveyor, and when it reaches a predetermined position, the belt conveyor is stopped and the work is stopped.
At the same time, the next work is sent to the first folding section, and the above folding operation is repeated.

FIG. 2 shows a sectional view of the second folding portion in a direction perpendicular to the work advancing direction. As shown in FIG. 2 (a), the belt conveyors (7) and (8) of the second folding section are above and below the work (1),
The work is inserted between them so that the paper folded in at the first folding section is pinched so that it cannot be unraveled. After the work is stopped, the ear pressing plate (9) presses the ears of the paper not folded at the first folding section from the upper side along the side surface of the work. Next, as shown in FIG. 2 (b), the pressing plate (10) and the ear-folding plate (11) are raised, the ears held by the ear-pressing plate (9) are folded up from below, and then the pressing is performed. Plate (10)
Is pressed against the ear press plate (9). Then, as shown in FIG. 2 (c), the ear pressing plate (9) and the upper belt conveyor (7) rise, and at the same time, the pressing plate (10)
When the edge of the paper is pressed against the side surface of the work, the edge folding plate (11) moves toward the center of the work to fold the ear protruding above the work along the work.

In this way, the second folding part has a shape as shown in FIG. 3 (c), and the end of the folded paper is normally retained at the paper retaining part (not shown) at the outlet of the second folding part. The tape is attached by the means described above, and the packaging is completed as shown in FIG. A work is discharged from the second folding unit, the next work is carried in, and a new folding is started.

As described above, the left half of FIG. 2 is left and right, and the left half is omitted. Therefore, the plates (9), (10), (11), the belt conveyor (7), and
(8) has a pair of left and right.

If the length of the ear pressing plate (9), the pressing plate (10), and the edge folding plate (11) in the work advancing direction is longer than the length of the maximum size work to be applied to this device in the work advancing direction, It is preferable that even if the size changes in the advancing direction of the work, there is no place to change in the second folding portion, and it can be dealt with. Further, in the case of changing in the lateral direction and the vertical direction of the traveling direction, the size of the second folding portion may be changed as follows.

When the lateral direction changes, the ear pressing plate (9), the pressing plate (10), the edge folding plate (11), the upper belt conveyor (7) and the lower belt conveyor (8) are secondarily arranged.
In the case of moving in the horizontal direction in the figure and changing in the vertical direction, the ear pressing plate (9) and the upper belt conveyor (7) may be moved in the vertical direction.

It is preferable to carry out these movements by using a computer control or the like because it is not necessary to stop the packaging device.

When the work thickness (size in the vertical direction) increases, the length of the ear press plate in the work advancing direction is made somewhat shorter than the length of the work, and the left and right ears of the ear press plate are installed separately. The ears may be folded up by the pressing plate after pressing the side pressing plate.

〔The invention's effect〕

Since the packaging device of the present invention has the above structure, it can be packaged without damaging the work, and the finished product after packaging is good,
In addition, since the performance does not change even if the size of the work changes, the size change range of the work may be large, which is extremely useful industrially.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the order of folding by a first folding part of an example of the packaging device of the present invention, and FIG. 2 is an explanatory view showing the order of folding by a second folding part of an example of the device of the present invention. Three
The figure is an explanatory view showing the order of packaging by the device of the present invention. In the figure, (1) is a rectangular parallelepiped work, (2) is paper, (3) is a lower belt conveyor, (4) and (4 ') are folding rolls, and (5) and (5') are folding roll storage parts. , (6) is an upper pressing belt conveyor, (7) is an upper belt conveyor, (8) is a lower belt conveyor, (9) is an ear pressing plate, (10) is a pressing plate, and (11) is an ear folding plate. Show each.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shozo Nashiki 14 No. 14 Sunayama, Hasaki-cho, Kashima-gun, Ibaraki Mitsubishi Kasei Co., Ltd. Kashima factory (72) Fumio Noda 2-chome 1-30 Shiba, Minato-ku, Tokyo No. Hishisei Sangyo Co., Ltd. Tokyo office (72) Inventor Nobuyoshi Fukuda 2-19-10 Shibashita, Kawaguchi City, Saitama Prefecture

Claims (1)

[Claims] 1. A device for wrapping a rectangular parallelepiped work with paper, comprising: a first folding section for folding the paper along a pair of opposite side surfaces of the rectangular parallelepiped work placed on the paper; In the packaging device having a second folding section that folds the paper along a pair of side surfaces, the first folding section moves up to a position near the center of the work upper surface from the lower side of the paper, It consists of a folding roll and a conveyor that conveys the work while holding the folded paper.
The second folding portion includes a pair of ear pressing plates that press a pair of unfolded paper ears along the side surface of the work from above, and an ear pressing plate that is pressed by the ear pressing plate from below and ears up. It consists of a pressing plate that presses against the pressing plate and an ear folding plate that folds the ear part that protrudes to the upper side of the work along with the work after the pressing plate has pulled out the paper edge part to the side surface of the work after pulling out the ear pressing plate. And a packaging device characterized in that the device has a paper fastening part for fastening the end of the paper folded at the second folding part.