JPH03621A - Corrugated fiberboard box opening device - Google Patents

Abstract

PURPOSE:To make it possible to open a corrugated fiberboard box automatically and favorably from a folded condition to a usable condition by a method wherein the title device is equipped with suction cups, which move a corrugated fiberboard box to the opening direction, an insertion rod, which helps the opening motion, and a guide plate. CONSTITUTION:When four suction cups 15 draw by suction the wall surface on the back surface side of a corrugated fiberboard box 7, and an arm 17 retreats on a rail 18, the corrugated fiberboard box 7 starts an initial opening motion favorably because an insertion rod 21 is lightly holding the front surface side of the corrugated fiberboard box 7. Then, the corrugated fiberboard box 7 receives a pressing force from the lateral direction along a tilted guide surface 14a of a guide plate 14, and is gradually opened into a condition with the cross section to be rectangular. When the movement of the arm 17 is stopped, at that position, respective clawed plates B-D, which are located at the lower surface side of the corrugated fiberboard box 7, are operated, and bottom flaps at the lower end of the corrugated fiberboard box 7 are opened outward. By this method, since the corrugated fiberboard box 7 is favorably opened from a folded condition to a usable condition, packaging work can be continuously performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cardboard phase opening device that can satisfactorily open a cardboard box in which a product is packed into a usable state.

(Prior art and its problems) Conventionally, large cardboard boxes have been used to package large products such as washstands, and when used, the products can be inserted into the cardboard boxes from a folded state. In the past, the cardboard box was opened manually from the folded state and put into use.
The product is packaged by inserting it into an opened cardboard box, and the packaging process is done manually, resulting in poor work efficiency.

(Means for Solving the Problems) The present invention has been devised in view of the above-mentioned conventional problems, and an object of the present invention is to improve the work efficiency of packing work by opening a folded cardboard box to a good use state. The purpose is to provide a device for opening a cardboard box in a folded state into a state in which a product can be inserted, and the gist thereof is to provide a device for opening a folded cardboard box into a state in which a product can be inserted. a suction cup that adsorbs to the side wall surface of the cardboard box and moves the cardboard box in the opening direction via a moving means; The present invention includes a retractable insertion rod that assists in the initial opening movement, and a guide plate that applies a pressing force in the lateral direction to the cardboard box to assist in the opening movement when the suction cup is moved.

(Function) By attaching a suction cup to the side wall surface of a folded cardboard box and moving this suction cup using a moving means, the cardboard box can be opened from the folded state as the suction cup moves. The insertion rod assists the initial opening movement of the cardboard box, making it possible to smoothly open the cardboard box from the folded state.Moreover, as the suction cup moves, the cardboard box receives pressure in the lateral direction along the guide plate, allowing it to be completely opened. It can be opened in a rectangular cross-section.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the overall configuration of the packaging line R. The packaging line R consists of a cardboard box supply device 1, a cardboard covering device 2 for covering products with the supplied cardboard boxes, and a cardboard box covering device 2 for placing the products inside the cardboard covering device 2. Transfer equipment to be transferred to: ;f,
3, a bending device 4 that folds the bottom flap of the cardboard box containing the product and seals the bottom of the cardboard box;
The main components are a sealing device 5 that folds the top flap of a cardboard box, and a pallet supply device 6 that supplies a pallet for transporting the packaged product.

The supply device 1 stores a large number of folded cardboard boxes 7, 7.7 in a stacked manner.
The cardboard boxes 7 loaded on the board are taken out one by one from the bottom side and transferred to the cardboard covering device 2 by the supply conveyor 8.
In the cardboard covering device 2, the cardboard box 7 conveyed by the supply conveyor 8 is placed in the upright state, and the suction a 15
It can be opened to the use state by the guide plate 14.

This process will be explained with reference to FIGS. 2 to 5 together with the main components disposed within the cardboard covering device 2.

In FIG. 2, the cardboard box 7 that is supplied into the cardboard covering device 2 in an upright manner is in a folded state, and an upper flap 7a that forms the lid of the cardboard box 7 is integrally attached to its upper end. At the same time, bottom flaps 3 to 3 forming the bottom surface of the cardboard box 7 are formed at the lower end of the cardboard box 7.
d is integrally formed in a folded shape.

First, the cardboard box 7 is placed between a pair of feed belts 12 and 12 in a raised state.
At this time, during the process of passing between the inkjet printers 11 and 11, the inkjet printer 11 prints the product number etc. on the cardboard box 7. Next, the product is transferred to the downstream side of the feed belt 12. A belt stand 13 is arranged, and four suction cups 15, 15, 15.15 are arranged above the belt stand 13 on the rear side in this example. These suction cups 15, 15.15.15 are attached to a support plate 16.16 fixed to the arm 17, and each suction cup 15 has a suction cylinder (not shown), etc., and is firmly attached to the wall surface of the cardboard box 7. It can be adsorbed to.

Further, as shown in FIG. 3, the arm 1517 is connected to the rail 1.
8 so as to be movable in the front and rear direction. or,
A dogleg-shaped guide plate 14 is disposed below the arm 17 parallel to the rail 18, and the tip of the guide plate 14 forms an inclined guide surface 14at. Further, a plate-shaped stopper 19 is provided at the end of the belt stand 13, and the belt stand 1 is moved by the feed belt 12.
The cardboard box 7 transferred onto the stopper 1
9 to a predetermined position on the belt stand 13 by 11 Vr'. Further, an insertion rod 21 that can be moved in and out by a cylinder 20 is arranged on the front side of the belt stand 13.
1 can be inserted into the cut line between the bottom flap a and 5 formed at the lower end of the cardboard box 7 when the cardboard box 7 is placed on the belt stand 13. By operating the cylinder 20, the tip of the insertion rod 21 can be inserted into the inside of the bottom flap a.

In this state, as described above, when each of the four suction cups 15 is attracted to the back side wall surface of the cardboard box 7 and the arm 17 moves backward on the rail 18 via a cylinder (not shown) or the like,
The cardboard box 7 is gradually opened, but since the insertion rod 21 lightly holds the front side of the cardboard box 7 as described above, the cardboard box 7 can be opened easily when the arm 17 moves rearward. is initially opened, and the cardboard box 7 can be opened successfully. As the arm 17 is gradually moved rearward, the insertion rod 21 is automatically removed along the cut line, and thereafter, as shown in FIG.
The cardboard box 7 is gradually opened into a rectangular cross-section by receiving a pressing force from the lateral direction along the inclined guide surface 14a of the guide plate 14. When the cardboard box 7 passes through the inclined guide surface 14a of the guide plate 14, it is completely opened to have a rectangular cross section, and when the movement of the arm 17 is stopped in this state as shown in FIG. Each claw plate B-D located on the lower side of the cardboard box 7 is driven, and the bottom flap axd at the lower end of the cardboard box 7 is opened outward.

This operating state is shown in FIGS. 6 and 7.

That is, before the arm 17 stops, the claw plate B disposed on the front side is lifted upward by the operation of the vertical cylinder 22, and this claw plate B touches the bottom flap b of the cardboard box 7.
Hook the lower end of the bottom flap b to the outside. Also, when the arm 17 is stopped, the bottom flaps a, c,
Each claw plate placed on the side of d is moved downward as shown in ■ by the downward movement of the vertical cylinder 23 that operates this claw plate, and then the horizontal cylinder 24 is operated to move it downward as shown in ■. A nail board is arranged inside each bottom flap a, c, d,
After that, the upper and lower cylinders 23 are moved upward again as shown in (3), and each claw plate is moved to each bottom flap a.

When the horizontal cylinder 24 is returned again in this state, the claw plate opens each of the bottom flaps a, c, and d outward as shown in (2).

In this state, the wash basin 10, which has been transferred by the product conveyor 9 shown in FIG. It is transferred to the lower side of box 7. In this state, as shown in FIG. 8, when the ascending conveyor 25 is lifted upward by a cylinder or the like (not shown) with the washstand 10 placed thereon, the washstand 10 is pushed into the cardboard box 7 from the bottom side of the cardboard box 7. inserted. When the sink 10 is completely inserted into the cardboard box 7 as shown in FIG. 9, when the suction force of the suction cups 15, 15, 15° 15 is removed and the suction cups are separated, the cardboard box 7 is wash basin 10
and get on the ascending conveyor 25, and the ascending conveyor 25
It moves downward with the downward movement of. Wash basin 10 in this state
The cardboard box 7 containing the inside is transferred into the bending device 4.

Next, the structural members in this bending device 4 and the process of folding the bottom flaps a to d of the cardboard box 7 using the structural members will be explained in order with reference to FIGS. 10 to 20.

Inside the refracting device 4, an opener 26, a tenth roller stand 27. 20th - Ra stand 2
8. Flap kick 29. A square mold 30 is disposed, and a pair of flap folding levers 31, 31 that can be opened and closed are further disposed downstream of the square mold 30. Said 10th-ra stand 27
A plurality of rollers 27a and 28a are disposed on the upper surface side of the 20th roller table 28, respectively, and the rollers 27a and 28a are arranged so as to form a horizontal plane that is substantially parallel to the ascending conveyor 25. has been done. Also, the 10th
The -r stand 27 is movable toward the 20th -r stand 28, and as shown in plan in FIG.
An opening 27b is formed in the holder 27, and the 20th holder 28 can be inserted into the opening 27b. Also, the opener 2
6 is rotatable downward through a shaft 26a, and is rotatable downward from an upper end position where it is in a wet state to a lower end position where it is in a vertical state.

Further, the flap kick 29 is rotatable via a shaft 29a. Further, the front end of the square shape 30 is a stopper 3.
0a, and the rectangular shape 30 can be moved up and down by a cylinder (not shown) or the like.

FIG. 10 (As shown, the Danbonil box 7 placed on the ascending conveyor 25 together with the washstand 10 is moved to the tenth roller stand 2 by the drive of a side belt (not shown) or the like.
7 and the 20th roller table 28, and are placed on the 10th roller table 27 and the 20th roller table 28 in contact with the stopper 30a of the rectangular shape 30. In this state, the opener 26 is rotated downward as shown in FIG. In this state, the pressing plate 32 provided at the upper part of the bending device 4 moves downward and comes into contact with the upper surface side of the cardboard box 7,
Press the cardboard box 7 downward.

In this state, as shown in FIG. 12, each of the bottom flaps a to C of the cardboard box 7 moves downward, and each of the bottom flaps a to c is placed at the outer lower part of the tenth and twentieth roller stands 27 and 28. It will be moved. In this state, the washstand 10 is still satisfactorily placed on the roller stands 27 and 28. In this state, as shown in FIG. 13, the flap kick 29 rotates and kicks the bottom flap a outward,
Form a crease on the bottom flap a.

Next, as shown in FIG. 14, the opener 26 is
Rotate upward and bend the bottom flap C at an angle of approximately 45°. At this time, as shown in FIG. 15, the 10th roller table 27 is moved toward the 20th roller table 28 by a cylinder or the like (not shown). Furthermore, as shown in FIG. 16, the C opener 26 in this state moves upward to the horizontal position, and
Fold the 10 colors until they are horizontal. Next, as shown in FIG.
- When the tenth roller stand 27 returns to its original position in this state, the opener 26 and the bottom flap C are placed on the upper surface side of the tenth roller stand 27. Next, as shown in FIG. 18, the flap kick 29 is rotated to bend the bottom flap a inward. In this state, the first
As shown in FIG. 9, when the rectangular mold 30 is moved down and the cardboard box 7 is moved to the left in the figure together with the washstand 10 by the drive of a side belt (not shown), the bottom flap a is moved to the left in the figure. It is folded along the upper surface side of the square mold 30, and the bottom flap a and the bottom flap C are completely folded on the upper surface side of the square mold 30.

Next, as shown in FIG. 20, a pair of flap folding levers 31, 31 which can be opened and closed in the vertical direction via shafts 31a, 31a are arranged on the downstream side of the square mold 30, so that the flap folding levers By actuating the levers 31 and 31, the side bottom flaps b and d are respectively folded inward.

Incidentally, when the cardboard box 7 passes near the rectangular shape 30, if hot melt or the like is applied to the folded bottom flaps a and C using a spray gun or the like, the bottom flap a
, C are well bonded to the bottom flaps b and d via hot melt, and the bottom surface of the cardboard box 7 is completely sealed.

The cardboard box 7 whose bottom side has been sealed in this manner passes through the sealing device 5 as shown in FIG. 1, and the upper flap 7a of the cardboard box 7 on the top side is sealed, completing the packaging.

After this packing is completed, a pallet 34 is supplied from the pallet supply device 6, the packed cardboard box 7 is placed on the pallet 34, and the pallet 34 is carried out to the outside via a carry-out line 35.

In this way, in this example, the cardboard covering device 2
Inside, suction cups 15, 15, 15, 15, guide plate 1
4. Due to the action of the insertion rod 21 and the like, the cardboard box 7 is opened from the folded state to the used state, and the washstand 10, which is a product, is inserted from below into the opened cardboard box 7, and the cardboard box 7 is accurately inserted. In this state, the cardboard box 7 is transferred together with the product 10 into the bending device 4, and the bottom flaps a to d of the cardboard box 7 are properly and automatically folded by the bending device 4. It can be folded up and the bottom can be sealed, allowing continuous packing work.

(Effects of the Invention) The cardboard box opening device of the present invention is a device for opening a folded cardboard box into a state where a product can be inserted, and the device is a device for opening a folded cardboard box into a state in which a product can be inserted. A suction cup that sticks to the side wall surface of the box and moves the cardboard box in the opening direction via a moving means; and at the beginning of the movement of the suction cup, the suction cup is inserted into the cut line of the flap of the cardboard box to assist the initial opening movement of the cardboard box. The structure includes a retractable (rQ) insertion rod and a guide plate that applies a pressing force in the lateral direction to the cardboard box to assist the opening movement when the suction cup is moved. The cardboard box can be easily opened to the used state using the suction cup, and the pressing action of the guide plate allows the cardboard box to be opened more reliably, and the folded state to the used state can be opened automatically and well. This has the effect of automating the opening of a cardboard box and subsequent packing work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall configuration diagram of a packaging line, Figs. Figures 6 and 7 are explanatory diagrams of the action of the nail plate, Figures 8 and 9 are explanatory diagrams of the action of the wash basin inserted into the cardboard box, and Figure 10 is an explanatory diagram of the action of the nail plate.
20 to 20 are explanatory diagrams of the constituent members of the refracting device in FIG. 1 and their functions, and FIG. 21 is a schematic plan view of the 10th and 20th ra tables shown in FIGS. 10 to 19. FIG. 1... Supply device 2... Cardboard covering device 3
... Transfer device 4 ... Refraction device 7 ... Cardboard box 7a ... Upper flap 10 ... Washstand
12...Feeding belt 14...Guide plate 14a.
... Inclined guide surface 15 ... Suction cup 17 ... Arm 18 ... Le-JL, 22.23 ... Vertical cylinder 24 ... Horizontal cylinder 25 ... Rising conveyor 26 ... Opener 27 ...No. 10 - Ra stand 2
B...20th-ra stand 29...flap kick 30
... Flying type 31 ... Flap folding lever a-d
...Bottom flap B, D...Claw plate R...Packing line

Claims (1)

[Claims] A device for opening a folded cardboard box into a state in which a product can be inserted, the device adhering to the side wall surface of the folded cardboard box placed vertically and moving the cardboard box through a moving means. a suction cup for moving in the opening direction; a retractable insertion rod that is inserted into the cut line of the flap of the cardboard box to assist the initial opening movement of the cardboard box at the beginning of the movement of the suction cup; A cardboard box opening device characterized by comprising a guide plate that applies a pressing force to the cardboard box in the lateral direction to assist the opening movement.