JPH0356210A - Edge folding device in automatic packaging of large sized rectangular solid - Google Patents

Abstract

PURPOSE:To perfect an automatic packaging and make an edge folding with little slack possible by a method wherein a packaging paper is wrapped around an object to be packaged and starched,and edges on the longitudinal side and edges on the top, which stick out from the side ends of the object to be packaged, are folded, and the paper ends of edges on the bottom are starched, and the lower end edges are folded down, and the edges, which stick out from the object to be packaged are folded over the top surface and bonded. CONSTITUTION:On a carrying roller table 19, an object to be packaged under a condition to be wrapped by a packaging paper is placed, and a rear end edge 8 of the packaging paper is supported by a supporting mechanism 18, and a front end edge 9 of the packaging paper is supported in the same manner by a supporting mechanism 26. A rear end edge folding device 12 comes into contact with the object to be packaged and performs an edge folding, and at that time, the supporting mechanism 18 moves and withdraws. Then, the object to be packaged is moved by the carrying roller table 19, and a front end edge 9 and performs an edge folding. At this time, the supporting mechanism 26 also moves and withdraws in the same manner. The object to be packaged continuously comes into contact with an upper end edge folding device 14, and an upper end edge 10 is folded and held by an upper end edge holding device 27. The object to be packaged, for which the paper end of a lower end edge is starched by a starching device 15, is carried to a lower end edge folding device 30, and an edge folding work is performed there.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of industrial application) The present invention relates to a single-motion packaging device for rectangular parallelepiped dolls made of metal, wood, ceramic, plastic, etc.

(Prior Art) Regarding the automatic packaging of doll rectangular parallelepipeds, there is a method such as Japanese Patent Application No. 184.533/1983 filed by the inventors. The packaging process will be explained with reference to FIGS. 5(a) to 5(f).

FIG. 5(a) shows that the object to be packaged is placed at a predetermined position on wrapping paper 2 which has been cut to a predetermined size according to the size of the object to be packaged 1 and placed at a predetermined position. Indicates the state in which

The wrapping paper and the object to be wrapped are shown in FIG. 5(a) in the longitudinal direction of the wrapping paper.
While being conveyed in the direction of the arrow, the products are packaged in the following order as shown in FIG. 5(b).

First, as shown in FIG. 5(b), the wrapping paper on the side opposite to the transport direction is first wrapped around the object to be wrapped, and then the wrapping paper on the side in the transport direction is wrapped and glued on the upper end surface of the object to be wrapped. here 3
is the rear end surface, 4 is not visible in the figure, but is the front end surface on the opposite side of 3, 5 is the upper end surface, 6 is not visible in the diagram, but is the surface opposite to 5 and is the lower end surface, 7 is the side end surface, and 8 is the bottom end surface. Posterior end ear, 9 is front end ear, 10
is the upper end ear, and 11 is the lower end ear. There are two side end faces, rear end ears, front end ears, two end ears, and two lower end ears on the left and right sides of the packaged object.

Next, as shown in FIG. 5(C), J1' folding of the rear end ears is performed simultaneously on the left and right sides. Next, fold the edges of the front edge in the same manner as ① and 1j on the left and right sides. Next, the upper edge is folded as shown in FIG. 5(d). Next, as shown in FIG. 5(e), the lower edge is folded.

Finally, as shown in FIG. 5(f), the lower edge protruding higher than the upper end surface of the packaged object is bent and glued to the upper end surface to complete the packaging. The width of the wrapping paper is selected so that the width of the bowl is always larger than the height of the object to be wrapped, that is, the width of the wrapping paper is such that the folding step (f) can be carried out without fail.

In this prior art, the edge folding method is as follows after the wrapping paper 2 is wrapped in a single layer around the object 1 as shown in FIG. 5(b).

The trailing edge folding is performed by moving the trailing edge folding device relative to the stationary packaged object. The rear edge folding device 12 has a sixth
As shown in figure (a), a pair of inner plate 121 and outer plate 12-2
I am admonishing you. The upper outer plate is located above the upper edge of the wrapping paper, and the lower outer plate is located below the lower edge 11 of the wrapping paper.

The inner plate 12-1 has a mechanism that allows it to pivot around a fulcrum, and the pivotable tips of the two upper and lower inner plates 12-1 initially meet at an intermediate position of the height of the packaged object.

As shown in FIG. 6(c), the trailing edge folding device 12 moves to the trailing edge 8 of the wrapping paper of the stationary object, and the tip of the mountain plate 12-1. The center part of the rear end ear 8 is bent from the rear to the front h and pressed against the side end surface 7,
As shown in C, the tip of the inner plate 12 then rotates from that position toward the upper and lower outer plates I2-2, thereby bending the rear edge 8 over the entire height direction.

The front edge folding is carried out by using a stationary front edge folding device and moving the packaged object. As shown in FIG. 7, the front edge folding device l3 consists of a pair of inner plate 131 and outer plate 13-2, the outer plate l3-2 is set slightly wider than the height of the object to be packaged, and the inner plate 13-1 is installed with its tips aligned and inclined so that the apex is located at an intermediate position of the height of the packaged object.

The front edge 9 of the wrapping paper of the object to be packaged, which approaches the front edge folding device 13, is initially folded 1113 only at the center portion corresponding to the apex of the inner plate king 3-1 from the front to the side edge surface 7. As the object to be packaged advances, the bent portion expands vertically due to the inclined inner plate 13-1.

5 The inner plate 13-1 of this front edge folding device 13 does not have a four-swivel mechanism like the west plate 12-1 of the rear end J-folding device 12, but when you want to make a clearer fold 1. In some cases, a mechanism for moving the inner plate toward the outer plate may be installed as well as the front edge folding device.

The upper edge folding is performed by moving the packaged object relative to the stationary upper edge folding device. The upper edge folding device 14 is a diamond-shaped folding plate, by which the upper edge IO is folded from above to the side edges iNi 7, as shown in FIG.

Next, the gluing device 5 applies glue to the inner side of the paper edge (the second side) of the lower edge ``1'', and the process proceeds to the next lower edge folding operation. The lower end edge folding is performed by moving the packaged object relative to the stationary lower end edge folding device 16 on the side end surface.

The lower edge folding device 1B is also a diamond-shaped folded plate, and the lower edge 11 is bent from below to the side edge surface 7 as shown in FIG.

The paper edge of the folded lower edge 11 is higher than the height of the packaged object, but it is folded by the lower edge folding device 17 to the upper edge of the triangular folded plate and glued to form the lower edge 11. The edge of the paper is pressed and adhered to the upper end surface 6 of the wrapping paper to form the state shown in FIG. 5(f).

Figure 11 is an explanatory diagram of the restoration of the two ends of the ear after folding, Figure 12.
The figure is an explanatory diagram of how a portion of the lower end ear hangs downward.

(Problems to be Solved by the Invention) The two-step method has been used for large-sized objects to be packaged, but as the size of the objects to be packaged continues to increase, the method described above becomes more difficult. Several problems arise.

First, when the wrapping paper has a huge selvage, its weight causes the top and bottom selvages to droop downwards before the rear and front edges are folded. In other words, when the height of the packaged object exceeds 0.5m and the length reaches several meters, the width and length of the wrapping paper will also increase, and the weight of the package will increase. also becomes larger.

If this happens, the upper and lower edges will hang downward before the rear and front edges are folded.

As shown in FIG. 10, if the upper and lower ears 10 and 11 near the rear and front ears 8 and 9 hang down, they will interfere with the folding device and the rear and front ears will be folded. is not possible. However, it is not economically viable to change the texture or specifications of the wrapping paper so that it has sufficient rigidity to prevent it from sagging, even at such widths and lengths.

Second, as the packaged object becomes longer, even if the upper edge is folded with a folded plate, the upper edge will pass through the folded plate 1, and when the force pressing it against the side edge surface is removed, the edge will recover somewhat. The problem is that it separates from the side end surface. In other words, a certain amount of space is provided between the side end surface of the packaged object and the diamond-shaped folded plate with the upper edge folded to prevent the side end surface and the folded plate from coming into too strong contact and damaging the wrapping paper. I have to keep it.

However, when the object to be packaged is long and has a long distance to be transported, it is necessary to leave a large gap between the objects. However, because this gap is large, the fold of the wrapping paper is not folded at a right angle, which has a small restoring force, and the upper edge 10 is folded on four sides with a curvature that has a large restoring force, as shown in FIG. If it moves away from 7, it will become an obstacle to the next step, which is folding the bottom edge.

For Komazo, there is a problem with the lower edge of the lower edge when folding the lower edge. If the selvage is huge and its weight is large, and there is a large gap between the packaged object and the folded plate, if the bottom selvage is folded, the entire bottom selvage will not be folded upward.
As shown in the figure, a part of the dowel end hangs downward from the gap.

The present invention makes it possible to use wrapping paper with lower rigidity even as the size of the packaged object increases! This was done in order to solve the above-mentioned problem that occurs in J.

(Means for Solving the Problem) The present invention places a rectangular parallelepiped-shaped packaged object on a wrapping paper cut out from a paper coil, wraps the wrapping paper around the package and applies glue, and then Automatic packaging in which the vertical edges of the wrapping paper that protrude from the edges and the upper edges are folded, the paper edge of the lower edge is glued, the lower edge is further folded in, and the edges are glued at the glued parts. It is a device that wraps the wrapped paper in a single layer around the object to be packaged, and then uses a movable support mechanism in the shape of an ear to stop the wrapping. A trailing edge folding device folds the trailing edge of the wrapping paper wrapped in the conveying direction of the packaged object from the rear end side toward the front; A front edge folding device that folds the front edge from the front end side toward the rear; a top edge folding device that folds the top edge from the top side toward F direction while conveying the packaged object through a conveyance line; and a top edge folded edge. a top edge holding device for holding the edges at the folded lower edge position; a gluing device for gluing the paper edge of the bottom edge of the packaged articles before being conveyed through a conveyance line; The lower end lug is folded upward from the lower end of the end face of the packaged object using a folding plate equipped with a sliding member at the tip, and the lower end lug that protrudes from the upper limit of the height of the packaged object is folded and bonded onto the upper surface of the packaged object. The edge folding device is used for automatic packaging of large rectangular parallelepipeds, and the edge folding device is used for automatic packaging of large rectangular parallelepipeds. 0 It must have a support mechanism to maintain the box shape formed with the ears, and this support mechanism must move in synchronization with the packaged object until just before folding the front edge. , an upper edge holding device that holds the folded upper edge at the folded lower edge position is followed by the upper edge folding device, and the lower edge folding operation is performed on a stationary long object to be packaged. This is done by moving the lower edge folding device, and the lower edge folding device rubs the lower edge against the side edge surface of the packaged object to prevent sagging. A long folded plate with a length equal to or longer than the length of the object to be packaged, with a sliding body attached to its tip that rubs the edges, moves the lower end edge of the paper with glue to the lower edge of the object to be packaged. The main feature is that the package is folded upward from the top, and then the lower edge protruding from the upper limit of the height of the packaged object is folded over and bonded to the top surface of the packaged object.

(Embodiment) An embodiment of the present invention will be described below based on the drawings.] The figure shows an outline of the present invention. In FIG. 1, a vertical board and a protection plate are placed on the transport roller table 19, and an object to be packaged is placed thereon with wrapping paper wrapped around it in a single layer. The vicinity of the rear edge 8 of the wrapping paper is supported by a rear edge support mechanism 18, and the vicinity of the front edge 9 is also supported by a similar front edge support mechanism 26.

The trailing edge folding device 12 comes into contact with the stopped packaged object and folds the trailing edge 8.

During the edge folding, the support mechanism 18 moves and retreats so as not to interfere with the edge folding operation.

Next, the vertical member, the protection plate, and the packaged object are moved by the conveyor roller table, and the front end edge folding device 1 is stopped at +LL.
3 and bring the front end ear 9 into contact with the front end ear 9 and fold the front end ear. The support mechanism 26 of the front end ear also stops moving and makes a retracting movement to complete the work.

The packaged object then comes into contact with the upper edge folding device 14 held by the transport roller table I9, and the second edge 10 is folded. The folded upper edge 101 2 is pressed down to the lower limit position of the side end surface by the upper edge holding device 27 so as not to restore. This two-end edge pressing device 27 is a long one that continues to the exit of the lower edge folding device 3o.

After the upper edge folding, the packaged object glued to the paper edge of the lower edge by the gluing device 15 is further conveyed to the position of the lower edge folding device 30 and is held there. The lower edge folding operation is performed by moving the lower edge folding device 30 relative to the stopped object.

The movable parts of these devices have a position detection device, and have a function of automatically correcting the position from the initially set position based on a detection signal.

Figures 2 (a), (b), and (c) show the rear ear support mechanism 18.
FIG.

As shown in FIG. 2(b), supports 2223 of parts of the upper and lower corners that can be retracted to the small trolley 21 on the rail 2o and upper end ear supports 1. A lj body 24 and a lower end ear support 25 that does not perform a retracting operation are mounted. Figure 5 (
After wrapping the object in a single layer of wrapping paper as shown in Figure 2 (C), wrap a part of the corner of the rear edge 8 and its vicinity as shown in Figure 2 (C). The second end lug 10 and the lower end lug 11 are attached to the supports 22, 23. 24 and 25 to maintain no slack.

At the same time that the trailing edge folding device 12 starts folding the trailing edge 8, the small trolley 21 moves along with the trailing edge folding device 12 in FIG. Move forward in sync with Jing Jin.

After completing the trailing edge folding, the support 22. 23 and 2
4 turns and retreats as shown in FIG. 2(a). Then, only the lower end ear is supported by the lower end ear support 25.

At the same time that the packaged object starts to move forward by the conveyance roller table 19 shown in FIG. When the work is started, the small cart 21 stops at that location, and the edge 11 of the object to be packaged slides on the support 25.

The details of the support mechanism 26 for the front end ear are the same as the support mechanism for the rear end ear, except that the forward movement is opposite to the support mechanism for the rear end ear. Supports 1, lj + 'p'j 2 B of the front edge, which have moved forward together with the wrapping paper while supporting the front edge of the wrapping paper and the upper edge 14 and lower edge near it, are the first
In front of the front edge analysis device 13 shown in the figure, move forward 11, and then turn the support body 1111 and retreat. Wrapping paper is wrapped in a single layer around the object to be packaged, and whether the top end is glued or not.
The rotation is completed without contacting the support.

As shown in FIG. 3(a), the upper end ear pressing device 27 includes an upper end ear pressing rod 28 and a position fixing metal fitting 29. These are connected to the upper edge folding device l4, which is a diamond-shaped folded plate, and the upper edge 10 is connected to the upper edge folding device l4 as shown in FIG. 3(b).
is held down by this upper edge holding rod 2B.

While inserting this second edge pressing rod 28 between the side edge surface and the folded upper edge, the next step, the lower edge folding operation, is performed with the packaged object stationary, and the lower edge is folded. {After finishing the cutting work, install the position fixing tool 29.
When the packaged product is removed from the upper end tab 7 and retracted, and the packaged product is conveyed by the conveyance roller table 19, the packaged product slips out from the upper edge presser bar 28.

15 FIG. 4(a) shows the details of the lower edge folding device 30, which has double folded plates 31 and 32, each having a length equal to or greater than the length of the object to be packaged. The folded plates 31 and 32 move upward from the lower limit of the side end surface while rubbing the lower edge II with the paper edge pasted against the side end surface 7 of the packaged object.

After the folded plate 32 exceeds the upper limit of the side end face 7, the folded plate 31 remains in that place, and the folded plate 32 is rubbed from the side end face side while rubbing the lower edge protruding from the second end of the injured side end face against the second end face 5. The conveyor roller moves toward the center of the table 19, and folds the lower edge of the package over the two ends of the package and adheres them.

In order to prevent slack from occurring, a sliding body 33 such as a brush or a spring-loaded power roll is attached to the tips of the folded plates 31 and 32. Assuming that the folding plate is a single layer, two operations are performed: folding up the lower edge upward from the lower edge of the packaged object, and then folding and gluing the lower edge, which protrudes from the upper limit of the height of the packaged object, onto the top surface of the packaged object. Good as a thing.

For example, the dimensions are height 0. 4 m % Width is 16 1.25 m, Length 3. 5 m, weight 1.7t
On laminated steel plate is used as the packaged object, and the width is 2.5r.
n. In automatic packaging using wrapping paper with a length of 8 m, the edge folding device of the present invention was used to fold the edges of the bell fruit, and the length of the wrapping paper in the circumferential direction including the ears was extremely good, with a slack length of 30 mm or less. The ear fold result was 111.

(Effects of the Invention) By using the edge folding device of the present invention, when automatically wrapping a large rectangular parallelepiped to be packaged on a transport roller table, the edge folding of the wrapping paper during automatic wrapping can be performed with extremely high precision. In addition to being able to carry out automatic packaging more completely, it is also possible to fold the edges with a small amount of looseness, so the dimensions of the wrapping paper can be minimized. There is no need to improve the quality of the material, and the cost is low.

[Brief explanation of drawings]

Figure 1 is a three-dimensional explanatory diagram showing the outline of the present invention, Figure 2 (a)
．． (b). (c) is an explanatory diagram of the rear end ear support mechanism 17 according to the present invention, FIGS. 3 (, 13.), (+) are explanatory diagrams of the upper end ear holding device according to the present invention, and FIG. ，
(b) is an explanatory diagram of the lower edge folding device according to the present invention, FIGS. 5(a) to (r) are three-dimensional explanatory diagrams showing a part of the conventional packaging process, and FIG. 6(a). (+1), (c) is a detailed view of the rear edge folding device, and Figure 7 (a). (b) is an explanatory diagram of the front edge folding device, and Fig. 8 (a). (b) is an explanatory diagram of the upper edge folding device, FIGS. 9(a) to (d) are explanatory diagrams of the lower edge folding device of the prior art, and FIG. FIG. 11 is an explanatory diagram of the restoration of the two ends of the ear after the ears are folded, and FIG. 12 is an explanatory diagram of the downward drooping of a part of the two ends of the ear. 1; Wrapping body 2; Wrapping paper 3; Rear end surface 4; Front end 5; Second end surface 6; Lower end surface 7; Side end surface
8; rear end ear 9, jagged end ear 10; second end ear 11; lower end ear I2; rear end ear folding device 1.2-1. Rear edge folding device inner plate +2-2. Rear edge folding device outer plate] 8 Front edge folding device 1; Front edge folding device inner plate 2, Front edge folding device outer plate. Front edge folding device 15; Lower end selvage folding device to end face Rear end selvage support mechanism Transport roller table 20: Rail small trolley upper corner support lower corner support 24; 2
8; Metal fitting for fixing the position of the upper end selvage bar, lower end selvage folding device (the present invention), lower end selvedge folded plate 32: lower end selvedge upper folded plate sliding mechanism Person Patent attorney Brown! l! f Tatsuo 1 (a) Fig. 6 (θ) (C) 7 ff) Fig. 7 (a) (b) (α) (b) (o) (C) // (b) (d ) 81

Claims (1)

[Claims] A rectangular parallelepiped-shaped object to be wrapped is placed on a wrapping paper cut out from a paper coil, and the wrapping paper is wrapped around the object and glued,
Fold the vertical edges and upper edges of the wrapping paper that protrude from the side edge of the packaged object, apply glue to the paper edge of the lower edge, fold the lower edge further, and glue at the glued part. This is an automatic packaging device that uses a movable ear-shaped support mechanism and a movable ear-shaped support mechanism and a stationary wrapping paper as the edge folding device after wrapping the wrapping paper in a single layer around the packaged object. A trailing edge folding device folds the trailing edge of the wrapping paper wrapped in the transport direction of the packaged object from the rear end side toward the front; a front edge folding device that folds the top edge of the packaged object from the front end toward the rear; a top edge folding device that folds the top edge of the packaged object downward from the top edge while conveying the packaged object through a conveyance line; A top edge holding device holds the folded bottom edge, a gluing device applies glue to the paper edge of the bottom edge while conveying the packaged object on a conveyance line, and a sliding body holds the bottom edge of the stationary packaged object. Fold the packaged object upward from the lower end using a folding plate equipped at the tip.
An edge folding device for automatic packaging of large rectangular parallelepipeds, further comprising a lower edge folding device for folding and bonding the lower edge protruding from the upper limit of the height of the packaged object onto the upper surface of the packaged object.