KR910003902B1 - Corrugated carboard - Google Patents

Abstract

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Description

Corrugated cardboard removal method

1 is a schematic operation diagram showing cardboard boxes being opened by the cardboard box removing method of the present invention.

2 is a schematic operation diagram showing the cardboard box removing method in a plan view.

3 is a front view of the cardboard at the flap folding stage.

4 is a front view of the cardboard at the end of the folding process.

5 is a front view of the corrugated cardboard during conveyance from the flap folding stage to the sealing stage.

6 is a front view of the cardboard placed on the sealing stage.

7 is a front view of a corrugated cardboard during sealing.

8 is a perspective view of a confined cardboard.

9 is a perspective view of a corrugated cardboard viewed from the back in the sealing.

10A to F are a series of operation diagrams in a known method of decontamination.

* Explanation of symbols for main parts of the drawings

10: cardboard box 12: cardboard

14 stocker 16,18 positioning member

20: adsorption board 22: swing arm

24: prop 30-34: folding hook

38: guide 39: adhesive tape

40: tape reel 42: alignment of the second flap

44, 46: Guide

The present invention relates to a corrugated cardboard removing method in which a sheet-shaped corrugated cardboard is opened, a flap is folded, and a seal is removed.

As is known, the corrugated cardboard has two pairs of flaps each up and down and is folded in a sheet shape. And before use, it is necessary to remove sheet-shaped corrugated cardboard.

Usually, cardboard removal is performed as follows.

(1) First, as shown in FIG. 10A, when pressure is applied from the side to the sheet-shaped corrugated cardboard 112, it is deformed into a rectangular parallelepiped (see also FIG. 10B).

(2) The upper flap F1U and the lower flap F1L of the flap F1 (referred to as inner flap) spaced up and down among the two pairs of flaps of the lower surface which become the bottom part of a corrugated board are shown in FIG. 10C. Fold as shown. Next, when the left flap F2L and the right flap F2R of a pair of flaps F2 (referred to as an outer flap) spaced apart left and right are folded as shown in FIG. 10D, it is shown in FIG. 10E. It becomes the shape to say.

(3) The bottom of the corrugated cardboard is sealed at the center of the folded outer flap (see also Section 10f). Sealing is performed using an adhesive tape, rubber tape, staples, hot melt, or the like.

In this way, sheet-shaped corrugated cardboard is limited through three steps of opening, flap folding and sealing. Here, when the flap is folded, a restoring force is generated, and the inserted flap is about to open. Therefore, sealing is performed in the state which pressed the outer flap to the retracted position. If the sealing is not performed with the outer flap in the center, the appearance is not preferable and sufficient strength cannot be secured. Therefore, the sealing is performed with the center of the outer flap aligned in a state where the mold flaw is prevented and the left and right flaps are kept in parallel.

The dimension of corrugated cardboard is not constant, and corrugated cardboard of various dimensions is marketed. Thus, the cardboard delimiter should include cardboard of various dimensions, and versatility is required. In each of the steps of the box opening, flap folding and sealing, it is necessary to adjust the box opening mechanism and the like in accordance with the size of the corrugated cardboard. However, in the known corrugated cardboard boxing method, it is not possible to quickly cope with the dimensional change, so that the corrugated paper box is complicated and it is difficult to reduce the size and weight of the cardboard box.

Moreover, in a well-known removal method, trouble tends to occur frequently in a flap folding process. As a result, as shown in FIG. 10C, if the outer flap F2 is closed even at least, the outer flap prevents the inner flap F1 from being folded. In the state in which the outer flap F2 is closed, when the inner flap is folded and touches the outer flap, it becomes bridge shape. Therefore, a trouble caused by the closing of the outer flap F2 is called a bridge. Then, when the bridge is formed, if the inner flap F1 is forcibly folded, the inner and outer flaps deform and break, and the corrugated cardboard becomes a defective product. Therefore, in the known corrugated cardboard removing method, if a certain amount of resistance occurs in the inner flap F1 due to the occurrence of the bridge, the flap folding process is immediately stopped. However, this interruption significantly reduces the work efficiency in the flap folding process. In addition, there is also provided a method of confirming that the outer flap F2 is not in the obstructed position by a sensor or the like, or forcing the outer flap to fold the inner flap F1, but the flap folding process can be performed quickly. At the same time, the corrugator is constitutively complex.

An object of the present invention is to provide a corrugated cardboard removing method in which the occurrence of bridges is reliably prevented and the flap folding step is performed quickly and easily.

In order to achieve this object, according to the present invention, corrugated cardboard is adsorbed by an adsorption board, and the upper flap of the first flap spaced up and down is folded in the air while being lifted from the stoke stage, and the cardboard is opened in the air.

Moreover, it is preferable to center and corrugate corrugated cardboard along the reference line parallel to the horizontal direction of corrugated cardboard. For example, the bottom edge of the cardboard is centered with a baseline. In addition, the adsorbent plate may adsorb the cardboard at the center in the horizontal direction of the corrugated cardboard, and the flap folding and sealing may be performed while being centered at the electrical reference line and also centered in the transverse direction of the cardboard. In this way, it is unnecessary to adjust the flap folding and sealing according to the dimension change of the corrugated cardboard, so that the size change can be easily coped with.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail, referring drawings.

Referring to FIGS. 1 and 2, the cardboard removing method of the present invention by the cardboard removing machine 10 will be described. The corrugated cardboard 12 is stacked on the stocker 14 in a folded state in a sheet shape. In this stocker stage, the centering (positioning) of the corrugated cardboard 12 in the X-axis direction (horizontal direction) and Y-axis direction (vertical direction, height direction) is performed. As a result, the cardboard box 10 includes a positioning member 16 that can slide in the X-axis direction and a positioning member 18 that can slide in the Y-axis direction. ), Centering in the X-axis and Y-axis directions is performed. Here, the vacuum adsorption plate 20 of the cardboard box 10 is waiting above the stocker 14, and this adsorption plate is located at the center Xc in the X-axis direction of the cardboard 12, The position of the corrugated cardboard 12 in the X-axis direction is adjusted. As a result, assuming that the width of the corrugated cardboard is W, the positioning member 16 slides to the left by W / 2 of the center Xc and is adjusted. Moreover, the reference line Yo parallel to the X-axis is set in advance, and the centering in the Y-axis direction is performed by aligning the bottom edge (bottom edge) 12a of the cardboard 12 with the reference line Yo. . Thus, the positioning portion 18 is carried forward from the reference line Yo by a substantial amount of the flap length of the corrugated cardboard 12.

Thus, in accordance with the dimensions of the corrugated cardboard 12 as the target, the positioning member 16 is moved from the center Xc to the left by W / 2, and the positioning member 18 is directly from the reference line Yo by the flap length equivalent amount. Slide each forward. As will be apparent later in the removing method of the present invention, adjustments other than these adjustments of the positioning members 16 and 18 are unnecessary, so that the size of the corrugated cardboard 12 can be easily coped with. Then, a plurality of corrugated cardboards 12 are placed on the stocker 14 in contact with and in contact with the positioning members 16 and 18.

The suction disk 20 faces downward and is provided at the tip of the swinging arm 22, and the swinging arm is mounted on the support 24 in a liftable manner. Moreover, the fold hook 30 for folding the upper flap F1U of the pair of flaps (inner flap) F1 which was carried up and down is assembled to the front-end | tip of the turning arm 22. As shown in FIG.

In the above configuration, as shown in FIG. 1A, the swing arm 22 is lowered so that the suction plate 20 adsorbs the uppermost cardboard 12 at the center Xc. Then, as shown by the reference sign B, the swing arm 22 is lifted up and rotated clockwise, for example, from above to convey the corrugated cardboard 12 to the next step.

In the present invention, the corrugated cardboard is opened while the swing arm 22 is raised to lift the corrugated cardboard 12. As a result, the lifting cardboard 12 is naturally opened slowly by its own weight. In addition, the folding hook 30 is operated in conjunction with the raising of the turning arm 22, and the folding hook is rotated downward at the same time as the automatic opening by its own weight, thereby folding the upper flap (FlU) into the upper flap. By inserting F1U, the corrugated cardboard 12 is forcibly opened as indicated by reference numeral B. FIG.

The swing arm 22 pivots until the joining plate 20 reaches the flap fold center Fc, and then descends and conveys the cardboard 12 to the flap fold stage (first c, d, FIG. 2, 3d, d ').

The remaining flap folding process is performed on the corrugated cardboard which is centered by the flap folding center Fc and conveyed to the flap folding stage. As a result, first, the lean meat 32, which is squeezed on the lower surface, rises while rotating, and folds the lower flap F1L of the inner flap (see FIG. 3 (d ')), and then the fold plate The left and right flaps F2R and F2L of the second flap F2, which are rotated to the left and right while the 34 and 36 are rotated, are folded (see FIGS. 4 and 2d ''). Moreover, it goes without saying that the folding hooks 30 are raised at the same time as the folding plates 34 and 36 are rotated, and the folding hooks 32 are lowered.

As described above, when the corrugated cardboard 12 is opened by folding the upper flap F1U while lifting the corrugated cardboard 12, the left and right flaps F2R and F2L as shown in Fig. 3d '. ) Is unfolded by pressing on the upper flap (F1U). As a result, the left and right flaps F2R and F2L are not in the closed position as they unfold and interfere with the folding of the lower flap F1L. Therefore, the folding of the lower flap F1L can be performed quickly and easily without being disturbed by the left and right flaps F2R and F2L.

As a result, in the method of the present invention in which the corrugated cardboard 12 is opened in the air while accompanying the folding of the upper flap F1U, there is no room for a bridge, and the folding of the inner flap can be performed quickly and securely. have. In addition, since the occurrence of the bridge is reliably prevented, deformation and breakage of the inner and outer flaps F1 and F2 do not occur. In addition, there is no interruption of the flap folding process due to the bridge.

Of course, there is no need to fold the inner flap F1 by using a sensor or the like and forcibly unfolding the outer flap F2. Thus, the cardboard box 10 can be simplified and small in size and light in weight.

The folding plates 34 and 36 for the left and right flaps F2R and F2L interlock with the positioning member 16 in the X-axis direction so as to approach and separate the flap center Fc. . Thus, once the positioning member 16 is adjusted in accordance with the dimensions of the corrugated cardboard 12, the folding plates 34, 36 automatically move to a predetermined position to fold the folding member 34 according to the dimensions of the cardboard. ) And 36 are unnecessary. As a result, the adjustment at the flap fold stage, which is accompanied by the dimension change of the corrugated cardboard, becomes unnecessary. Therefore, it is possible to cope with the dimension change without any adjustment.

As can be seen from FIG. 2, the sealing center Sc is set so that the predetermined distance L is halfway in the X-axis direction from the flap fold center Fc. Therefore, when the cardboard 12 is conveyed by the predetermined distance L in the X-axis direction, the cardboard is centered by the sealing center Sc and moved to the sealing stage.

As shown in FIG. 5, even during conveyance to the sealing center Sc, the folding plates 34 and 36 hold | maintain at the folding position, and act as a guide. Therefore, mold disorder of the corrugated cardboard 2 during conveyance is prevented. In the latter half of the conveyance, the folding plates 34 and 36 are separated from the corrugated cardboard 12. Thus, the guide 36 is appropriately disposed along the conveying path, and mold-shape of the corrugated cardboard 12 is continued from the folding plates 34 and 36 to the guide 38, thereby continuing to be prevented (see FIG. 6). ).

And when the cardboard 12 is conveyed by the predetermined distance L, the cardboard 12 is sealed by the sealing mechanism. The sealing mechanism is configured with a recommended tape reel 40 of adhesive tape 39, as shown in FIG. Then, the tape reel 40 is raised while being rotated, and the adhesive tape 39 is adhered to the bottom surface of the corrugated cardboard 12 with the fitting portion 42 of the second flap as the center, so that the corrugated cardboard 12 is It is sealed. The corrugated cardboard 12, which has been removed through each of the steps of the box opening, the flap folding and the sealing, is shown in FIG.

Thus, in the cardboard box 10, the sealing center Sc is located by the predetermined distance L from the flap folding center Fc. Therefore, when the flap folding stage moves by the predetermined distance L, the corrugated cardboard 12 is always centered to the sealing center Sc and sealed in the centered state. In such a structure, even if the corrugated cardboard 12 has a dimension change, adjustment of the sealing mechanism is unnecessary. As a result, even in the corrugated cardboard 12 having any dimension, the sealing can be performed without adjusting the sealing mechanism, and the size change can be easily coped with.

As described above, in the removing method of the present invention, it is sufficient to adjust the positioning members 16 and 18 according to the dimensions of the corrugated cardboard 12, and the adjustment in the flap folding stage and the sealing stage is not necessary. . Therefore, the size change of the corrugated cardboard 12 can be easily coped.

In addition, as shown in the figure, when the corrugated cardboard is moved in parallel to the predetermined distance L in the flap folding stage, the sealing stage is reached, and this predetermined distance L is considered in consideration of the width W of the corrugated cardboard 12. The minimum value is set. Therefore, the conveyance distance of the corrugated cardboard 12 is sufficient, the length of the corrugated cardboard box 10 in the X-axis direction can be made small, and the corrugated cardboard box is miniaturized. Further, in the configuration in which the cardboard 12 is transported by turning the suction plate 20 from the stoke stage to the flap folding stage, the cardboard box 10 can be further miniaturized and the installation area of the cardboard box is small. Lose.

As shown in FIG. 6 and FIG. 9, the guide 44 is brought into surface contact with the upper surface 12U of the cardboard at the time of sealing, and the separate guide 46 is placed at the second flap tip of the rear surface of the cardboard ( It is good to perform sealing in the state made to contact with 13 as a whole. In such a state, mold-shape of the corrugated cardboard 12 is fully prevented, and the sealing which centered the left and right flaps at the center 42 of the outer flap can be performed easily. Of course, the guides 44 and 46 are configured to be able to cope with the dimension change of the corrugated cardboard 12 without adjustment.

As described above, the corrugated cardboard is centered and stoked at the reference line Yo, and the adsorption plate 20 adsorbs and conveys the cardboard at the center Xc in the horizontal direction of the corrugated cardboard. In addition, the remaining flap folds and seals are performed while being centered on the reference line Yo and also centered on the horizontal center of the cardboard. In such a removal method, it is unnecessary to adjust flap folding and sealing according to the dimension change of the corrugated cardboard, and it is possible to easily cope with the dimension change.

The above-described embodiments are for the purpose of illustrating the present invention and do not limit the present invention at all, and needless to say, all modifications, modifications, and the like within the technical scope of the present invention are included in the present invention.

For example, in the embodiment, one suction plate 20 is used. However, when a plurality of suction disks 20 are provided, it is possible to reliably prevent the positional shift of the corrugated cardboard due to the rotational moment when the swinging arm 22 swings.

In addition, although the folding flap 30 and 32 are embodied as a folding hook, you may use it as a folding plate.

As described above, in the present invention, the upper flap of the inner flap is folded and bent to open the corrugated cardboard in the air while being adsorbed by the corrugated cardboard adsorption plate and being lifted from the stoke stage.

In this method, the flaps on the left and right sides of the outer flap are pushed out by the upper flap of the inner flap so as not to be in a closed position such as to prevent folding of the lower flap. Therefore, the folding of the lower flap can be performed quickly and easily without being disturbed by the left and right flaps.

As a result, in the method of the present invention, there is no room for bridge, and deformation and breakage of the inner and outer bridges do not occur.

Moreover, there is no interruption of the flap folding process due to the bridge. Moreover, the corrugated cardboard box which implements the method of the present invention can be simplified and can be made compact and light in weight.

Claims (5)

In the corrugated cardboard removing method of opening a stoked sheet-shaped cardboard, folding two pairs of flaps at the bottom of the cardboard, sealing them with adhesive tape, etc., and removing the cardboard. A corrugated cardboard containing method, wherein the cardboard is opened in the air by folding the upper flap of the inner flap spaced up and down while lifting from the stalk stage. The corrugated cardboard according to claim 1, wherein the corrugated cardboard is centered and stalked along a horizontally parallel reference line of the corrugated cardboard so that the adsorption plate adsorbs the corrugated cardboard at the center of the corrugated cardboard in the horizontal direction of the corrugated cardboard and is centered on the reference line. A method for removing corrugated cardboard in which a remaining flap is folded and sealing is performed in a centered state. 3. The method of claim 2 wherein the bottom edge of the cardboard is aligned with the baseline and centered. The corrugated cardboard decontamination method according to any one of claims 1 to 3, wherein the corrugated cardboard is transported by turning the suction disk from the stoke stage to the flap folding stage, and the corrugated cardboard is transported in parallel from the flap folding stage to the sealing stage. . The sealing according to any one of claims 1 to 3, wherein the sealing is brought into contact with the upper surface of the corrugated cardboard at the time of sealing, and the separate guide is brought into full contact with the tip of the second flap of the cardboard back. Corrugated cardboard decontamination method.

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