JP2019196216A - Supply unit of corrugated fiberboard box - Google Patents

Abstract

To provide a supply unit of a corrugated fiberboard box which can relieve restriction of a layout of a folding corrugated fiberboard box and a making-box device.SOLUTION: A supply unit of a corrugated fiberboard box which is made to a cylindrical shape by developing a folding corrugated fiberboard box in a folded state, comprises: a holding part which holds a first face of the folding corrugated fiberboard box; and a control part which inclines the holding part so that an angle between the first face and a face adjoining to the first face that overlaps with the first face in the folded state enlarges by self-weight of the folding corrugated fiberboard box that is made to a suspending state by the holding part.SELECTED DRAWING: Figure 5

Description

The present invention relates to a cardboard box supply device that unfolds a folded cardboard box into a cylindrical shape.

2. Description of the Related Art As a cardboard box supply device that unfolds a folded cardboard box into a cylindrical shape, an apparatus that performs work using a robot is known (for example, see Patent Document 1). This supply device lifts a folded cardboard box by bringing a plurality of suction pads into close contact with the upper surface side of the folded cardboard boxes stacked in a flat state. The plurality of suction pads are held by a rotatable frame and are arranged on two surfaces on the upper surface side. Then, by moving the frame in the direction in which the two surfaces approach each other, a cylindrical cardboard box that is bent at approximately 90 ° along the bent portion is obtained. The corrugated cardboard box having a cylindrical shape is held on the front surface by the suction pad and pulled in the direction of travel, and the side surface is held by the suction pad and advances through the box making apparatus while the left and right positions are regulated. Thereby, the bottom of the cardboard box is formed.

JP 2005-1304 A

Although the above-described corrugated cardboard supply device is very excellent, it is necessary to use a relatively large robot having a large suction force because the suction pad is located on the traveling direction side of the box making device. Therefore, the layout of the folding cardboard box, the robot, and the box making apparatus may be restricted, which has been a problem particularly when such a machine is introduced in a narrow place.

The present invention pays attention to such a problem, and an object of the present invention is to provide a cardboard box supply device that can relieve restrictions on the layout of a folded cardboard box or a box making apparatus.

The cardboard box supply device of the present invention is a cardboard box supply device that unfolds the folded folded cardboard box into a cylindrical shape, and a holding unit that holds one surface of the folded cardboard box; Due to the weight of the folded cardboard box suspended in the air by the holding portion, the angle formed between the one surface and the surface adjacent to the one surface overlapping the one surface in the folded state is increased. And a control section for tilting the holding section.

ADVANTAGE OF THE INVENTION According to this invention, the supply apparatus of the cardboard box which can ease the restrictions of the layout of a folding cardboard box and a box making apparatus can be provided.

The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

It is a schematic plan view which shows the supply system of the cardboard box of one Embodiment of this invention. It is operation | movement explanatory drawing of the supply apparatus of the cardboard box concerning the embodiment. It is operation | movement explanatory drawing of the supply apparatus of the cardboard box concerning the embodiment. It is operation | movement explanatory drawing of the supply apparatus of the cardboard box concerning the embodiment. It is operation | movement explanatory drawing of the supply apparatus of the cardboard box concerning the embodiment. It is a schematic plan view which shows the other usage of the supply system of the cardboard box concerning the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, a corrugated cardboard supply system 10 according to the present embodiment is mainly composed of a folding corrugated cardboard box stock device 1, a corrugated cardboard box supply device 2, and a box making device 3.

As shown in FIGS. 1 to 3, the stock apparatus 1 is a place where a plurality of folded cardboard boxes B are stacked in the vertical direction.

As shown in FIG. 1, the cardboard box supply device 2 unfolds the folded cardboard box B into a cylindrical shape. The cardboard box supply device 2 includes a holding unit 21 and a control unit 22. In this embodiment, a conventional articulated robot (for example, a 6-axis vertical articulated robot) whose head is arbitrarily operated is used as the cardboard box supply device 2, but the head is arbitrarily selected with respect to the X, Y, and Z axes. Various things, such as a robot and an apparatus which can move, are employable. The head is movable between the stock apparatus 1 and the box making apparatus 3. The head is provided with a holding portion 21.

The holding | maintenance part 21 hold | maintains one surface B1 of folding cardboard box B, as shown in FIGS. In the present embodiment, one surface B <b> 1 is located on the upper surface in a state where it is placed on the stock device 1. The holding unit 21 includes a main suction unit 23 and a sub suction unit 24. The main suction portion 23 sucks one surface B1. The main suction portion 23 includes a frame 25 and a plurality of suction pads 26 that suck the one surface B1. Each suction pad 26 is attached to the frame 25 and connected to a vacuum mechanism (not shown). The sub suction part 24 is rotatable about a shaft 29 provided at the end of the main suction part 23. The sub adsorption part 24 adsorbs the surface B2 adjacent to the one surface B1. The adjacent surface B2 is a surface that overlaps with the one surface B1 in a folded state and continues to the one surface B1. The sub suction portion 24 includes a frame 27 and a plurality of suction pads 28 that suck a surface B2 adjacent to one surface B1. Each suction pad 28 is attached to the frame 27 and connected to a vacuum mechanism (not shown). The frame 25 of the main suction portion 23 and the frame 27 of the sub suction portion 24 are connected via a shaft 29.

The control unit 22 includes a dedicated or general-purpose computer such as a CPU, an internal memory, an input / output interface, and an AD conversion unit. The function as the control unit 22 is exhibited by the cooperation of the CPU and other peripheral devices in accordance with the program stored in the internal memory. In the control unit 22 of the present embodiment, the angle α formed by the one surface B1 and the surface B2 adjacent to the one surface B1 is increased by the weight of the folded cardboard box B suspended by the holding unit 21. The holding portion 21 is tilted as described above. Further, the control unit 22 rotates the frame 27 of the sub suction unit 24 so that the sub suction unit 24 is positioned substantially at right angles to the main suction unit 23.

As shown in FIG. 1, the box making apparatus 3 folds the bottom flaps B5 and B6 of the corrugated cardboard box B developed in a cylindrical shape to form the bottom surface, and folds the inner flap B5 located in the front-rear direction. The guide part 31 for this and the guide part 32 for folding outer flap B6 located in the left-right direction are provided. Since the box making apparatus 3 is well known in this field, detailed description thereof is omitted. In the present specification, front, rear, left, and right will be described with the traveling direction of the cardboard box B as the front.

Next, an example of operation | movement of the supply system 10 of the cardboard box B is demonstrated using FIGS.

First, as shown in FIG. 1 and FIG. 2, the holding portion 21 in which the main suction portion 23 and the sub suction portion 24 are arranged in a straight line is placed on the cardboard box B placed on the top of the stock apparatus 1. Get closer. In that case, the main adsorption | suction part 23 is arrange | positioned at the edge part B10 of the cardboard box B, and the sub adsorption | suction part 24 is arrange | positioned on the outer side of the folding cardboard box B. FIG. In other words, the holding | maintenance part 21 is arrange | positioned along the acute angle bending part B9.

The main adsorbing part 23 adsorbs one surface B1 of the folded cardboard box B and moves upward as it is. As shown in FIG. 3, the folded cardboard box B held by the main suction portion 23 has one surface B1 lifted from the flat state, and the angle α formed between the one surface B1 and the adjacent surface B2 is large. It becomes a cylindrical shape of a parallelogram in side view. Specifically, the two surfaces B1 and B4 located on the upper surface side in the stock apparatus 1 are bent at the bent portion B7 by the lifting by the holding portion 21 and the dead weight of the folded cardboard box B. The bent portion B7 approaches a right angle from approximately 180 °. On the other hand, the two surfaces B2 and B3 located on the lower surface side in the stock apparatus 1 are also bent at the bent portion B8 by the lifting by the holding portion 21 and the weight of the folded cardboard box B. The bent part B8 approaches a right angle from approximately 180 °.

Next, as shown in FIG. 4, the control unit 22 bends the holding unit 21. Specifically, the frame 27 of the sub suction part 24 is rotated about 90 ° with respect to the frame 25 of the main suction part 23. At this time, since the acute bent portion B9 of the folded cardboard box B is not fully opened to the right angle, the sub adsorption portion 24 does not contact the folded cardboard box B.

From this state, as shown in FIG. 5, the control unit 22 tilts the holding unit 21. Specifically, the main suction portion 23 is controlled to be inclined obliquely from the horizontal direction so that the sub suction portion 24 is positioned below the main suction portion 23. In other words, the control unit 22 is a parallelogram when viewed from the side when lifted by the holding unit 21, and is in a state opposite to the folding of the folded cardboard box B along the folding. Tilt in the direction to make a parallelogram.

Then, due to the weight of the folded cardboard box B suspended by the holding unit 21, the angle α formed by the one surface B1 and the adjacent surface B2 is increased, and the adjacent surface B2 is away from the one surface B1. Move towards. Further, the other surface B3 facing the one surface B1 also moves in a direction away from the one surface B1. As a result, the acute bent portion B9 approaches a right angle, and the surface B2 adjacent to the one surface B1 reaches the sub adsorption portion 24. The sub adsorption part 24 adsorbs the surface B2 adjacent to the one surface B1 in that state.

The cylindrical cardboard box B that is held by the main suction portion 23 and the sub suction portion 24 and whose four corners are substantially perpendicular is moved to the box making apparatus 3 as it is. As shown by a two-dot chain line in FIG. 1, the cylindrical cardboard box B has its rear surface (adjacent surface B <b> 2) pushed by the sub suction portion 24, and its side surface (one surface B <b> 1) has the main suction portion 23. The box making apparatus 3 is advanced while the left and right positions are defined. Then, the bottom is formed using the guide portions 31 and 32 while being held by the main suction portion 23 and the sub suction portion 24. Thereafter, the suction state of the main suction portion 23 and the sub suction portion 24 is released, and the main suction portion 23 and the sub suction portion 24 return to the original straight line.

Moreover, the supply system 10 of the cardboard box B according to the present embodiment can also cope with a layout as shown in FIG.

The holding part 21 is arranged near the center of the cardboard box B. The main suction portion 23 sucks one surface B1 of the folded cardboard box B, and the sub suction portion 24 sucks the surface B4 exposed to the outside and moves upward as it is. The control unit 22 moves the main suction unit 23 and the sub suction unit 24 in a direction approaching each other, so that the bent portion B7 approaches a right angle from approximately 180 °. The cylindrical cardboard box B that is held by the main suction portion 23 and the sub suction portion 24 and whose four corners are substantially perpendicular is moved to the box making apparatus 3 as it is. As shown by a two-dot chain line in FIG. 6, the cylindrical cardboard box B has its rear surface (surface B <b> 4) pushed by the sub adsorption portion 24 and the side surface (one surface B <b> 1) left and right by the main adsorption portion 23. The box making apparatus 3 is advanced while the position is defined.

As described above, the cardboard box supply device 2 that unfolds the folded folded cardboard box B into a cylindrical shape includes the holding unit 21 that holds one surface B1 of the folded cardboard box B, and the holding unit 21. Due to the weight of the folded corrugated cardboard box B suspended by the portion 21, the angle α formed by one surface B1 and the surface B2 that overlaps the one surface B1 in the folded state and is adjacent to the one surface B1 is large. Thus, the box making apparatus 3 can be moved while pushing the cardboard box B from the back, not only in the layout as shown in FIG. 6 but also in the layout as shown in FIG. According to the supply device 2, it is possible to use a smaller robot than before, and it is easy to cope with variations in layout near the box making device 3.

The holding portion 21 includes a main suction portion 23 that sucks one surface B1 and a sub suction portion 24 that is rotatable about a shaft 29 provided at an end B10 of the main suction portion 23. The part 24 is arranged outside the folded cardboard box B. Therefore, the folded cardboard box B can be handled by a simple method. Furthermore, it is preferable because the angle between the two surfaces B1 and B2 is not changed while adsorbing the two adjacent surfaces B1 and B2 of the cardboard box B.

The present invention is not limited to the embodiment described above.

The holding part 21 may be anything as long as the folded cardboard box B can be suspended, and is not limited to the one provided with the suction pad. The cardboard box B in a folded state before being held by the holding unit 21 may be stacked in the vertical direction, or may be stacked in the front-rear or left-right direction in a standing state. Good.

In the above-described embodiment, after the sub suction portion 24 is rotated to position the sub suction portion 24 at a predetermined position with respect to the main suction portion 23, the main suction portion 23 and the sub suction portion 24 are inclined. However, conversely, the main suction portion 23 and the sub suction portion 24 may be tilted before the sub suction portion 24 is rotated. That is, the present invention comprises a step of hanging the folded cardboard box B by the holding unit 21, a step of positioning the holding unit 21 so that the two surfaces of the folded cardboard box B can be held, and a step of tilting the holding unit 21. Any order may be used, and the order of the steps can be interchanged.

According to the present invention, one surface overlaps with one surface in a folded state by the weight of the holding portion that holds one surface of the folded cardboard box and the folded cardboard box suspended by the holding portion. What is necessary is just to provide the control part which inclines a holding | maintenance part so that the angle made with the surface adjacent to this surface may become large. Therefore, as shown in the above-described embodiment, not only the cardboard box is supplied so that the box making apparatus 3 can be moved while pushing the cardboard box B from behind, but the box making apparatus 3 is pulled while pulling the cardboard box from the front. Of course, it may be used in a method of supplying a cardboard box so that it can be moved.

The embodiment disclosed this time is an example, and the present invention is not limited to this. The present invention is defined by the terms of the claims, rather than the scope described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

INDUSTRIAL APPLICATION This invention can be utilized for the supply apparatus of the corrugated cardboard box which expand | deploys the folded-up corrugated cardboard box and makes it cylindrical.

2 ... Cardboard box supply device 21 ... Holding unit 22 ... Control unit B ... Folding cardboard box B1 ... One surface B2 ... Adjacent surface α ... Angle

Claims (1)

A supply device for a corrugated cardboard box that unfolds a folded corrugated cardboard box into a cylindrical shape, a holding unit that holds one surface of the folded cardboard box, and a folding unit that is suspended by the holding unit A control unit that tilts the holding unit so that an angle formed between the one surface and the surface adjacent to the one surface in a folded state is increased by the weight of the cardboard box; Cardboard box supply device provided.

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