JP2001225804A - Method and apparatus for folding corrugated fiberboard covering bottom flap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for folding a corrugated fiberboard covering bottom flap wherein an object to be packed which is of a fixed form and heavy can be simply and securely packed by a semiautomatic machine without expertness. SOLUTION: The apparatus for folding a corrugated fiberboard covering bottom flap has a mount base (1) of the object (A) to be packed formed of a fork-shaped fixed base (1) and a fork-shaped movable base (1"). Receiving seats (2) for receiving lower ends of flaps (Fa to Fd) for forming a corrugated fiberboard case bottom lid are provided below both sides of the base (1). In addition, a fork lever (3) for folding the rear flap (Fa) is pivoted to the rear of the base (1) so that it can reciprocatingly rotate downward from a horizontal position. A tab (4) for folding the front flap (Fb) is provided on the front of the base (1). In addition, folding guides (5) which narrow as coming forward from both sides of the front of the base (1) are placed to fold the side flaps (Fc), (Fc). A three-dimensional chain belt mechanism (6) for feeding the object is further provided from the rear of the fork lever (3) toward the front of the folding guide (5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for folding a bottom flap over a corrugated cardboard, which does not require skill by semi-automatic mechanisms for heavy objects to be packed in a fixed size such as a plurality of magazines or catalogs. Thus, the bottom lid can be easily and reliably formed and packed.

[0002]

2. Description of the Related Art In general, magazines and catalogs are stored in the upper opening by holding both hands with a plurality of books stacked in a height enough to be stored in a cardboard case having a bottom cover formed in advance.

[0003]

However, magazines and catalogs to be packaged are light-sized if they are of a fixed size and a single book, but will be considerably heavy if they are stacked in a plurality of books. And since the cardboard case to fill it has almost no gaps with the goods to be packed, the work of packing these into the cardboard case requires some skill and the weight of the goods to be packed makes long-term work a cause of back pain. Has also become.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object and to solve the conventional problems, a first aspect of the present invention is a method of folding a bottom flap with a corrugated cardboard, comprising a fork-shaped fixed base and a movable base. When placed on the base, the fork lever arranged at the rear of the base is rotated downward from the horizontal position, and the object to be packed on the base is covered with a cardboard box having upright flaps at the upper and lower openings, and the flap is directed downward. Abuts on the lower seat of the base, the fork lever returns to the original position, and the movable base retreats at the same time, the rear flap of the cardboard box is folded inward, and then the cardboard box is sent forward. As a result, the downward front flap comes into contact with the folding tongue piece located in front of the base and is folded inward, and the downward side flap is moved to the left of the base by moving the cardboard box forward. While in contact with the oblique side bar-shaped folding guide tapered form are arranged on both sides are folded inward is obtained by forming a bottom cover.

A second aspect of the present invention is a cardboard-covered bottom flap folding device, in which a base serving as a mounting table for a packaged object is formed by a fork-shaped fixed base and a fork-shaped movable base, and the base is placed on both lower sides of the base. A shaft is provided to receive a lower end of a side flap for forming a cardboard box bottom cover, and a fork lever for folding a rear flap for forming a cardboard box bottom cover behind a base can reciprocate downward from a horizontal position. In order to provide a tongue piece for folding a front flap for forming a cardboard box bottom lid in front of the base, and to fold a side flap for forming a cardboard box bottom lid,
An oblique bar-shaped folding guide that narrows forward from both sides of the front of the base is arranged, and a three-dimensional chain belt mechanism for feeding the packaged goods is provided from behind the fork lever to the front of the folding guide. is there.

A third aspect of the present invention is the corrugated cardboard covering bottom flap folding apparatus according to the second aspect of the invention, wherein the length of the fork-shaped fixing base is set to be slightly less than half the length of the article to be packed, and the fork of the fixing base is set. When the fork-shaped movable table is arranged so that it can move forward and backward between
When the movable platform advances and receives the bottom of the object to be packed, the fork lever simultaneously pivots downward, and the fork lever is folded back to fold the rear flap at the bottom of the cardboard box over the object to be packed. The movable table 1 "is retracted to the fixed table side and returned to the original position when it is rotated and returned in the position direction.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a base for placing articles to be packed such as a collection of lyrics or catalogs for karaoke or karaoke, and is formed by a fork-shaped fixed base 1 'and a fork-shaped movable base 1 ". The table and the movable table are formed to be about half the length of the object to be packed, and the width is set slightly shorter than the width of the object to be packed A and the inner surface width of the cardboard B. Is arranged so that the fork-shaped movable base 1 "can move forward and backward between the fork of the fixed base 1 ', and the length L when the movable base 1" advances from the fixed base 1' is The length is set to be slightly shorter than the length L ′ and the inner surface length L ″ of the cardboard box B. Note that an air cylinder is used as a drive source of the movable table.

Reference numeral 2 denotes a receiving seat for receiving the lower ends of the downward flaps Fa to Fd for forming a bottom cover of the cardboard box provided below both sides of the base 1. The height of the receiving seat can be adjusted. Specifically, the height of the fold of the bottom flap is set at the height at which the fold of the flap is positioned on the base surface. 3 is a fork lever, and a base 1
In order to fold the rear flap Fa downward facing inward, a shaft 31 is connected so as to be able to reciprocate downward from a horizontal position. An air cylinder is used as a drive source of the fork lever.

Reference numeral 4 denotes a tongue piece 4 provided in front of the base 1 to fold a front flap Fb for forming a bottom cover of a corrugated cardboard case inward. The tongue piece 4 is integral with the flat mounting table surface and large from the mounting table surface. It is formed upright with a curvature R. 5
Is a folding guide composed of a pair of left and right hypotenuse bars arranged on both sides of the base 1. The bottom of the cardboard case containing the article to be packed, which is narrowed while becoming upward as it goes forward and contacts the inside of the folding guide. The side flaps Fc / Fc for forming the lid are folded inwardly.

Reference numeral 6 denotes a three-dimensional chain belt mechanism provided from the rear of the fork lever 3 to the front of the folding guide 5 for feeding articles to be packed. The chain belt mechanism arranges a pair of left and right chain belts on both sides of the base 1, the fork lever 3, the tongue piece 4, and the folding guide 6 via a plurality of sprockets 6a, 6b,. A rod-shaped pusher 61 is attached, and the upper side of the chain belt is set to be higher than the mounting surface of the base 1 and is on the feed side. An AC motor is used as a drive source of the chain belt mechanism. Reference numeral 7 denotes a receiving tray for sending the cardboard box B having the bottom cover B 'formed thereon to the next process section 8.

[0011]

[Specific process example] A specific process example based on the above embodiment will be described. First, the articles A to be loaded on the horizontal fork lever 3 from the infeed conveyor C are pushed by the pushers 61 of the chain belt mechanism 6 to send the articles W to the base 1, and when they are reached, they are separately installed. A certain sensing device such as a sensor operates to stop driving the chain belt mechanism. (FIGS. 1 to 3) In this state, the movable base 1 'moves forward and the package
It is designed to receive the bottom of W. Thereafter, the fork lever 3 rotates downward by 90 degrees from the horizontal position via the mounting shaft 31. (Shown by chain lines in FIG. 2)

Next, a cardboard case B in which the flaps of the upper and lower openings are standing upright on the article A to be packed on the base 1 from above.
And the lower end sides of the downward flaps Fa to Fd on the bottom side abut against the receiving seat 2. (FIGS. 4, 5, and 11) In this state, in order to fold the rear flap Fa downward, the movable base 1 "of the base 1 is retracted and returned to the original position. When the fork lever 3 is rotated to return to the horizontal position, the downward rear flap Fa is folded inward from the fold by 90 degrees (FIGS. 6 to 8).

Subsequently, when the cardboard box B is moved forward by the pusher 31 by resuming the driving of the chain belt 6, the downward front flap Fb hits the tongue piece 4 having a large curvature and is folded inward at 90 degrees to form the front flap Fb. The process shifts to the mounting table 4 'of integral molding. (FIG. 9) Further, as the movement of the cardboard box B on the mounting table 4 ′ formed integrally with the tongue piece 4 continues, the downward side flaps Fc and Fd press against the inside of the oblique bar of the folding guide 5 and face the inside. And a bottom cover B ′ is formed. (Fig. 10, Fig. 11, Fig. 13)
The corrugated cardboard case B in which the bottom cover B 'is completely formed passes through the receiving stand 7 and is transferred to the next step 8 by the chain belt mechanism. (Fig. 1)

[0014]

According to the present invention having the above-described structure, the following effects can be obtained. In the manufacturing equipment of corrugated cardboard case,
A semi-automatic mechanism makes it possible to easily and reliably pack heavy objects of a fixed size, such as multiple magazines and catalogs, without the need for skill.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a packing machine including a device of the present invention.

FIG. 2 is a vertical cross-sectional side view showing a state in which an article to be packed is placed on a base.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a vertical sectional side view showing a state in which a cardboard case is placed on an article to be packed placed on a base.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a vertical sectional side view showing a state in which a bottom rear flap of a corrugated cardboard case, which is placed on an object to be packed on a base, is folded.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is an elevation view of FIG. 7;

FIG. 9 is an elevational view of a state in which the mechanism has been shifted to a mechanism for folding a bottom front flap of a corrugated cardboard case over a package on a base.

FIG. 10 is an elevation view of FIG. 9;

FIG. 11 is a plan view of FIGS. 9 and 10;

FIG. 12 is a perspective view of a cardboard case for forming a box used in the method and apparatus of the present invention.

FIG. 13 is a perspective view showing the bottom of a cardboard case formed by the method and apparatus of the present invention.

[Explanation of symbols]

Reference Signs List 1 Base 2 Cardboard case flap receiving seat 3 Rotating fork lever for folding rear flap at bottom of cardboard case 4 Tongue piece for folding front flap 5 Folding guide for bottom side flap of cardboard case 6 Chain conveyor mechanism 7 Cradle 8 next process department

Claims (3)

[Claims] 1. A fork lever (3) arranged at the rear of a base when placed on a base (1) composed of a fork-shaped fixed base (1 ') and a movable base (1 ") faces downward from a horizontal position. The cardboard box (B) having upright flaps in the upper and lower openings is placed on the packaged object (A) on the base, and the downward flaps (Fa to Fd) are placed under the base (2). Abut on the fork lever (3)
The movable platform (1 ") retreats at the same time as the pivot is returned to the original position, the downwardly directed rear flap (Fa) is folded inward, and then the cardboard box is moved forward, so that the fold located in front of the base is folded. Front flap (F
b) abuts and this is folded inward, and further downward movement of the cardboard box causes the side flaps (Fc) and (Fd) facing downward to abut inside the folding guides (5) arranged on the left and right sides of the base. A method of folding a cardboard-covered bottom flap, wherein the bottom flap is formed by folding. 2. A base (1) serving as a mounting table for the object to be packed (A) is formed by a fork-shaped fixed base (1 ′) and a fork-shaped movable base (1 ″). ), A receiving seat (2) for receiving a lower end of a downward flap (Fa-Fd) for forming a cardboard box bottom lid is provided at the lower side of the base, and a downward rear flap (Fa) is folded behind the base (1). The fork lever (3) is connected with the shaft (31) so that it can reciprocate downward from the horizontal position,
A tongue piece (4) for folding a downward front flap (Fb) is provided in front of (1), and a downward side flap (Fc)
In order to fold (Fc), a folding guide (5) that narrows forward from both sides of the front part of the base (1) is arranged, and further extends from behind the fork lever (3) to the front of the folding guide (5). And a three-dimensional chain belt mechanism (6) for feeding articles to be packed. 3. The length (L) of the fork-shaped fixing base (1 ') is set to be less than half the length (L') of the article to be packed (A), and the length of the fixing base (1 ') is reduced. The fork-shaped movable base (1 ") is arranged so as to be able to move forward and backward between the forks, and when the object to be packed (A) is placed, the movable base (1") advances and the object to be packed ( Upon receiving the bottom of (A), the fork lever (3) simultaneously rotates downward,
Rear flap at the bottom of the cardboard box (F
When the fork lever is rotated and returned to the original position in order to fold a) inward, the movable table (1 ") retreats to the fixed table (1 ') side and returns to the original position. 3. The corrugated cardboard-covered bottom flap folding device according to claim 2.