JPH03289430A - Unpacking method for box and device therefor - Google Patents

Abstract

PURPOSE:To make it possible to unpack a box without damaging a content in the box by a method wherein after inserting plate shaped bodies from a gap between a pair of outer flaps, they are moved along the outer flaps toward inner flaps, and the outer flaps are removed from the inner flaps to unpack the box. CONSTITUTION:Advancing up to one side of outer flaps F2 of a box B, a spat ula 2 forms a gap G between the upper and lower outer flaps F2, F2. A slight insertion of the spatula 2 from the gap G makes the spatula 2 and the outer flaps F2 to be approximately in parallel. The tip of the spatula 2 is inserted up to a position slightly higher than the highest part of a glued part between the inner flaps F1 and outer flaps F2, and the spatulas 2 are moved toward the inner flaps F1, F1 along the outer flaps F2 by moving right and left moving tables 32, 32 along a linear rail 31 by a vertical moving device 4 and shaking device 6, and thus, the outer flaps F2 are removed from the inner flaps F1.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a box unpacking method and apparatus for unpacking a box such as a cardboard box whose inner flap and outer flap are glued together. In particular, after inserting a spatula through the gap between the butts of the outer flaps, by moving the spatula along the outer flaps toward the inner flaps, the outer flaps are peeled off from the inner flaps and the box body is opened. The present invention relates to a method for unpacking a box and an apparatus therefor.

(Prior art) Conventional technologies related to a box unpacking method and an apparatus thereof include Japanese Patent Publication No. 57-48452 and Japanese Patent Publication No. 59-34.
Those described in Japanese Patent Application Laid-open No. 576 and Japanese Patent Application Laid-Open No. 168840/1984 are known.

To explain the conventional technology described in the above-mentioned gazette, Japanese Patent Publication No. 57-48452 describes how to press a cardboard box from the left and right sides with two pressing rollers to slightly raise the outer flaps on both sides. A cardboard box opening device is disclosed that opens an outer flap of a cardboard box by inserting a protruding member into a gap between a flap and an inner flap.

Furthermore, Japanese Patent Publication No. 59-34576 describes an opening tape cutting device that cuts the tape of a carton whose lid portion is sealed with tape using a rotatably driven disk-shaped cutter to open the lid. .

Furthermore, JP-A-62-168840 describes an automatic unpacking machine equipped with a pasting part cutter whose lower end is a boat-shaped wide disc part and a blunt blade part with no sharpness is formed. has been done.

(Problems to be Solved by the Invention) However, the above-mentioned conventional technology had the following problems.

In other words, the cardboard box opening device described in Japanese Patent Publication No. 57-48452 can open a simply sealed cardboard box, but it cannot open a box body that is faced with a glue stick. Can not.

In addition, the closure tape cutting device described in Japanese Patent Publication No. 59-34576 uses a cutter to cut the tape that seals the lid, so if the box is deformed, the inside of the box may be damaged. may cut or damage items stored in the machine.

Furthermore, if the outer flap is glued to the inner flap, the outer flap cannot be opened. It is possible to unpack a box that has been sealed, but it is not possible to unpack a box whose outer flap is glued to the inner flap.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method and apparatus for unpacking a box with which an inner flap and an outer flap are glued together without using a sharp cutter.

(Means for Solving the Problem) The present invention provides a box unpacking method for unpacking a box to which an inner flap and an outer flap are glued. After being inserted along the flap, the plate-shaped body is moved along the outer flap in the direction of the inner flap, thereby peeling the outer flap from the inner flap and unpacking the box. The above object has been achieved by providing a method for unpacking a box.

Preferably, the gap between the pair of outer flaps is formed by pressing one of the outer flaps.

Further, it is preferable that the gap between the pair of outer flaps is formed by suctioning one of the outer flaps.

The present invention also provides a box unpacking device for unpacking a box to which an inner flap and an outer flap are glued, as an apparatus for carrying out the above method for unpacking a box. A holding device for holding the flap, a plate-shaped body for peeling the outer flap from the inner flap, and a moving device for moving the plate-shaped body so as to pass between the inner flap and the outer flap. The present invention provides a box unpacking device having the following characteristics.

In addition, it is preferable that the plate-shaped body is a substantially triangular spatula.

(Function) According to the box unpacking method of the present invention using the box unpacking device of the present invention, after inserting the plate-like body through the gap between the pair of outer flaps along the outer flaps, By moving the plate-shaped body along the outer flap toward the inner flap, the outer flap can be peeled off from the inner flap and the box can be unpacked.

(Embodiment) First, an embodiment of the box unpacking apparatus of the present invention will be explained in detail.

Fig. 1 is a perspective view showing an embodiment of the box unpacking device of the present invention, and Fig. 2 is an explanatory diagram of the unpacking operation procedure. ) and an outer flap (F2) are attached to the box body (B) with glue, and (2) is a plate-shaped body (approximately) for peeling off the outer flap (F2) from the inner flap (Fl). A pair of triangular spatulas are provided on each side of the roller conveyor (7). In addition, (3) is a roller conveyor (force A pair of vertical moving devices (4) are provided on both sides of the roller conveyor (7) to move the spatulas (2) in the vertical direction. In addition, (5) is a back and forth moving device that moves the spatula (2) in the front and back direction, and one unit is provided on each side of the p-ra conveyor (7).
A pair of rocking devices are provided on both sides of the p-ra conveyor (7). In FIG. 1, the left-right moving device (3) and the back-and-forth moving device (5) on the back side are omitted from illustration. Therefore, one (lower) outer flap (F
2) is pressed with the spatulas (2), (2), and from the gap between the pair of outer flaps (F2), (F2), push the spatulas (2), (2) along the outer flap (F2). After insertion, the outer flap (F2) is moved to the inner flap (Fl) by moving the spatulas (2), (2) along the outer flap (F2) toward the inner flap (Fl), respectively.
l) There is no need to peel it off from (Fl) and unpack the box (B).

To explain each part in the above embodiment, the box holding device (1) is composed of a holding plate (11) and an air cylinder (1 side), and the holding plate (11) moves in the vertical direction by the operation of the air cylinder (12). There is nothing like that.

In addition, as shown in FIG. 3, the approximately triangular spatula (2) has a blade-like groove formed on its gill 2 (20) to the extent that it does not have any sharpness, and each rocking device (6) is attached to the tip of the swing arm (61).

In addition, the left-right moving device (3) is a pair of left-right moving tables ((2), ((translation), left-right moving table ( (2)
, (to) air cylinder (33, rack attached to one left/right moving table (34) -1 rack attached to the other left/right moving table (32) (3!1)
, consists of a pinion for transmitting the movement of the rack to the rack (3), and a pair of left and right moving tables (3) (((
(Thus, the pair of spatulas (2) are
, (2) to the inner flap (Fl) (Fl) and the outer flag (
F2). That is, the air cylinder (33) is connected to one left and right moving table ((2)
While moving along the linear rail (3υ), the movement of the rack (34) attached to the left/right moving table ((transfer) is transferred to the left/right movement of the other one via the binion (to) attached to the longitudinal moving table (6υ). A rack attached to a stand ((material)) is transferred to the other left/right moving stand (34) along a linear rail (3υ) to move in the opposite direction to one left/right moving stand (3). be.

In addition, the vertical movement device (4) includes a vertical movement table (41), two air cylinders (41, (41) arranged in series, and two guides (44) erected on the left and right movement table (2). ,(4
The vertically movable table (4υ) is moved up and down, and the spatula (2) is moved up and down via the swinging device (6). The cylinder (4a, (41) moves the vertically moving table (40) along the guide (44, (44).

In addition, the longitudinal movement device (5) is composed of a longitudinal movement table (5υ), two linear rails (1), etc. By moving the spatula (2) back and forth, the spatula (2) is moved back and forth via the left and right moving device (3), the vertical moving device (4) and the swinging device (6).

The swing device (6) also includes a swing arm (6υ), two air cylinders (62i61) arranged in series, and a fulcrum (64
The air cylinder (6X1, (F4) swings the swinging arm (60) about the fulcrum - and swings the spatula (2).

Next, a method for unpacking a box according to the present invention will be described based on an embodiment using the box unpacking apparatus of the above-described embodiment.

First, the depalletizer etc. are depalletized, and 1
The box body (B) which has been separated into pieces has an inner flap (Fl).
and the outer flap (F2) are glued to the roller conveyor (7) so that the glued surface is located on the side with respect to the direction of travel.
It is conveyed on the top and stops at a predetermined position (Fig. 2 (
a)). The stopped box (B) is the box holding device (1)
The air/ring (12) lowers the holding plate (
It is held by lυ (see Figure 2(b)).

When the box body (B) is held by the holding plate (lυ), the front-back moving table (5υ) of the back-and-forth moving device (5) is moved by the linear rail ((
By moving forward along the horizontal axis, the spatula (2) opens the outer flap of the box body (B) via the left and right moving device (3), the vertical moving device (4) and the swinging device (6). Move forward to position (F2) (see Figure 2 (c)).At this time,
The spatula (2) has an inner flap (Fl) and an outer flap (F2).
It is positioned so that it is located inside (center side) from the position where it overlaps.

When the spatula (2) moves forward to the position of the outer flap (F2), the air cylinder (@, (63) of the swing device (6) moves the swing arm (61) and the spatula (2) around the fulcrum (64). is tilted significantly (approximately 21°), and the spatula (2) presses the lower outer flap (F2), thereby sealing the top of the butt between the upper and lower outer flaps (F2) and (F2). While shearing the craft tape (not shown), push the items (W) stored in the first to third tiers from the bottom inside the box (B), and open the upper and lower outer flaps (F2), (F2). ) to form a gap (G). After forming the gap (G), return only the air cylinder (goods) and reduce the inclination (approximately 6 degrees) between the swinging arm ωυ and the spatula (2). (See figure (d)).

When a gap (G) is formed between the upper and lower outer flaps (F2), (F2), the air/ring (43
to guide the vertical moving table (41) (44, (44)
By slightly (approximately 20u) rising along (the tip of the article (W) does not reach the bottom of the fourth article (W) from the bottom) (see FIG. 2(e)).

When the spatula (2) is slightly inserted into the gap (G), the air cylinder (63) of the rocking device (6) is returned and the spatula (
The tip of the spatula (2) comes into close contact with the inside of the upper outer flap (F2), and the spatula (2) and the outer flap (F2) become approximately parallel (see FIG. 2(f)).

When the spatula (2) comes into close contact with the inside of the upper outer flag (F2), the air cylinder of the vertical movement device (4) is activated, and the vertical movement table (4υ) is raised along the guides (44, 44). As a result, the spatula (2) is inserted (raised) to a predetermined position along the outer flap (F2) via the rocking device (6) (see Fig. 2 (g) and Fig. 2 (h)). )
. The tip of the spatula (2) is inserted to a position slightly above the height of the top where the inner flap (Fl) and outer flap (F2) are glued.

When the spatula (2) is inserted to the predetermined position, the air cylinder (33) of the left/right moving device (3) is activated to move the left/right moving table 0 to the inner flap along the linear rail (3υ). By moving in the (Fl) and (Fl) directions, the spatula (
2) is the inner flap (Fl) along the outer flap (F2)
direction, and move the outer flap (F2) to the inner flap (Fl).
) (see Figure 2(i)).

When the outer flap (F2) is separated from the inner flap (Fl), the spatula (2) returns to the activation starting position shown in FIG. 2(a).

When the spatula (2) returns to the starting position, the holding plate (l), which is caught in the operation of the air cylinder (12), rises and the box body (B
) is released from the box holding device (1) and moved by the roller conveyor (7) to the lower outer flaps (F2), (F2).
The inner flag (Fi), (Fl) (Fl), (F
In the same manner as the upper outer flaps (F2), (F2), the lower outer flaps (F2), (F2) are separated from the inner flaps (Fl), (Fl).
), (Fl) is peeled off from (Fl).

Moreover, FIG. 4 is an explanatory diagram of the unpacking operation procedure based on another embodiment of the method for unpacking a box according to the present invention, in which the gap between a pair of outer flaps attracts one of the outer flaps. The embodiment is similar to the embodiment shown in FIGS. 1 to 3 except that it is formed by a pair of vertically movable tables (40 , (4υ) can be suitably implemented by another embodiment (not shown) of a box unpacking device further provided with a suction device (8).

That is, when the box (B) is held by the holding plate (1υ), the spatula (
2) advances to the position of the lower outer flap (F2), and a pair of vertically movable tables (4I) and a suction device (8) disposed between (4υ) move the air 7 ring (not shown). The operation of e will move forward to the upper outer flap (F2) position, and the upper outer flap (F2) & suction (Fig. 2 (
c).

The spatula (2) and the suction device (8) move forward to the position of the outer flap (F2), and the suction device (8) moves to the upper outer flap (F2).
When suctioning the goods (F2), the swinging arm (6υ) and the spatula (2) tilt, and the spatula (2) presses the lower outer flap (F2), and the goods in the first and second stages from the bottom ( W) and the suction device (8) retreats to pull up the upper outer flap (F2) and open the upper and lower outer flaps (F2).
), (F2), cut off the craft tape (not shown) sealing the butt parts, and remove the upper and lower outer flaps (
F2), a gap (G) is formed in (F2). (See Figure 2(d)).

When a gap (G) is formed between the upper and lower outer flanges (F2), the swinging arm (61) and the spatula (2) are returned, and the spatula (2) is used to remove the third article from the bottom. (W) of the air/su/da (43) of the vertical moving device (4) in a position that does not penetrate
After the spatula (2) is slightly inserted into the upper outer flap (F2) from the gap (G), the vertical moving table (41) is raised slightly (about 20 mm). (
(see Figure 2(e)), and the spatula (2) is attached to the outer flap (F
2), the suction of the suction device (8) is released (see Fig. 2(f)).
.

When the spatula (2) is inserted to a predetermined position and the suction of the suction device (8) is released, the spatula (2) moves along the outer flap (F2) toward the inner flap (Fl),
Peel off the outer flap (F2) from the inner flap (Fl) (see Figures 2(g) and 2(h)).

The embodiments of the box unpacking device of the present invention and the embodiments of the box unpacking method of the present invention have been described above, but the present invention is not limited thereto. For example, in the present invention, the surface where the inner flap (Fl) and the outer flap (F2) are overlapped is 1
It can be applied to boxes with only one side or three or more sides.
) may be installed in the required quantity depending on the overlap of the inner flap (Fl) and outer flap (F2).

Further, the present invention can be applied to a box body in which the abutting portions of the outer flaps (F2) and (F2) are not sealed with craft tape.

(Effects of the Invention) As described above, the box unpacking method and device of the present invention include:
After the plate-like body is inserted into the gap between the pair of outer flaps along the outer flaps, the plate-like body is moved along the outer flaps toward the inner flaps, so that the plate-like body is stored in the box body. The box can be unpacked by peeling off the outer flap from the inner flap without damaging the stored articles.

Moreover, by providing a left-right moving device, a vertical moving device, a back-and-forth moving device, etc., boxes of various sizes can be unpacked.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the box unpacking device of the present invention, Fig. 2 is an explanatory diagram of the unpacking operation procedure, Fig. 3 is an enlarged front view of the spatula, and Fig. 4 FIG. 2 is an explanatory diagram of an unpacking operation procedure based on another embodiment of the box unpacking method of the present invention. (1): (Box) holding device (2): Plate-shaped body (spatula) (3): (Left and right) moving device (B) Two boxes (Fl):
Inner flap (F2): Outer flap (G): Gap

Claims (1)

[Claims] 1) In a box unpacking method for unpacking a box to which an inner flap and an outer flap are glued, a plate-shaped body is inserted through a gap between a pair of outer flaps along the outer flap. and then moving the plate-like body along the outer flap in the direction of the inner flap, thereby peeling the outer flap from the inner flap and unpacking the box. How to unpack. 2) The method for unpacking a box according to claim 1, wherein the gap between the pair of outer flaps is formed by pressing one outer flap. 3) The method for unpacking a box according to claim 1, wherein the gap between the pair of outer flaps is formed by suctioning one of the outer flaps. 4) A box unpacking device for unpacking a box to which an inner flap and an outer flap are glued, comprising: a holding device for holding the box; and a plate-like member for peeling the outer flap from the inner flap. An unpacking device for a box body, comprising: a moving device that moves the plate-shaped body so as to pass between the inner flap and the outer flap. 5) The box unpacking device according to claim 4, wherein the plate-like body is a substantially triangular spatula.