JP2006015490A - Box manufacturing apparatus and box manufacturing method using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box manufacturing apparatus capable of performing pasting or folding work while feeding a blank without stopping a conveyor and capable of precisely controlling a pasting or folding position, and a box manufacturing method using it. <P>SOLUTION: The box manufacturing apparatus is constituted so as to manufacture an assembling type box by applying paste to the cut and striped blank 1 to fold the blank 1 and has a hot melt glue sensor 10 for detecting a pasting position, a hot melt glue gun 2 for emitting paste to the pasting position detected by the hot melt glue sensor 10, a first hook 3 for hooking the leading end part of the blank 1 to fold the same, a first back finger sensor 12 for detecting the folding position of the rear end part of the blank 1 and a first back finger 4 for holding the rear end part of the blank 1 detected by the back finger sensor 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a box manufacturing apparatus that manufactures a prefabricated box by gluing and cutting a cut and crooked blank, and a box manufacturing method using the same.

Various proposals have heretofore been made for an assembling-type box by gluing and folding a blank cut and crooked into a predetermined shape as a member for a box. For example, in JP-A-2002-205734, There has been proposed an assembling type box having a lid portion that is easy to assemble by forming the box main body and the lid portion integrally, thereby reducing the loss of the assembling process.
However, Japanese Patent Application Laid-Open No. 2002-205734 relates to the structure of a box assembling type box, and the box manufacturing apparatus and manufacturing method have not been sufficiently studied.
In addition, the conventional box manufacturing equipment transports the blank with the chain conveyor, and stops the conveyor and performs the gluing and folding work with the blank stopped, so it is necessary to move the gluing and folding tool back and forth. Therefore, only about 30 to 40 boxes / minute could be manufactured, and the work efficiency was not sufficient, and the gluing and folding positions were not accurate.
JP 2002-205734 A

  The present invention solves the problems of the prior art as described above, and can perform gluing and folding operations while transporting a blank without stopping the conveyor, and also performs precise control of gluing and folding positions. It is an object of the present invention to provide a box manufacturing apparatus and a box manufacturing method that can be used.

The present invention has been made as a result of intensive studies in order to solve the above-mentioned problems, and the gist of the present invention is the following contents as described in the claims.
(1) A box manufacturing apparatus for manufacturing an assembly-type box by gluing and cutting a cut and creasing blank,
A hot melt glue sensor for detecting the position to be glued;
A hot melt glue gun that irradiates glue on the glue position detected by the hot melt glue sensor;
A first hook that hooks and folds the tip of the blank;
A first back finger sensor for detecting the position of folding the rear end of the blank;
A box manufacturing apparatus comprising: a first back finger that folds a rear end portion of a blank detected by the back finger sensor.
(2) Furthermore,
A second back finger sensor for detecting the fold position of the rear corner portion of the blank;
A second back finger that creases the corner of the rear end of the blank detected by the second back finger sensor;
A second hook that creases the front end corner of the blank;
A sensor for a press belt that detects a press position for pressing a glued portion that is folded at the left and right ends with respect to the traveling direction of the blank;
The box manufacturing apparatus according to (1), further comprising: a press belt that presses a pasting portion detected by the press belt sensor.

(3) A box manufacturing method using the box manufacturing apparatus according to (1),
According to the number of pulses proportional to the distance from the hot melt glue sensor to the detected gluing position, irradiation of the hot melt glue gun is started for a certain distance,
When the blank reaches the position of the first hook, the hook device hooks and folds the tip of the blank,
A box manufacturing method, wherein the first back finger is operated according to the number of pulses proportional to the distance from the first back finger sensor to the position at which the rear end of the blank is folded.
(4) A box manufacturing method using the box manufacturing apparatus according to (2),
The second back finger is operated according to the number of pulses proportional to the distance from the second back finger sensor to the crease position of the rear end corner of the blank, and the crease is formed at the rear end corner of the blank. With
When the blank reaches the position of the second hook, the hook makes a crease at the tip corner of the blank,
A box manufacturing method, wherein the press belt is operated in accordance with a pulse number proportional to a distance to a press position for pressing a glued portion detected from the press belt sensor.

  According to the present invention, it is possible to perform gluing and folding operations while conveying a blank without stopping the conveyor, so that the production efficiency of the box can be remarkably improved and precise control of the gluing and folding positions is performed. It is possible to provide a box manufacturing apparatus and a box manufacturing method that can be used, and there are significant industrially useful effects.

The best mode for carrying out the invention will be described in detail with reference to FIGS.
FIG. 1 is an overall plan view illustrating an embodiment of a box manufacturing apparatus according to the present invention.
In FIG. 1, 1 is a blank, 2 is a hot melt glue gun, 2 is a first hook, 3 is a second hook, 4 is a first back finger, 4 is a second back finger, 5 Indicates a power input port, 16 indicates an upper belt, and 17 indicates a holding belt.
The box folding apparatus in the present embodiment includes a sheet feeding unit, a first folding unit, a second folding unit, a pressing unit, and an alignment conveyor unit from the right side of FIG. The shape of the blank 1 is shown.
First, the blank 1 supplied to the paper feeding unit is conveyed from right to left on the conveyor, and after the paste is irradiated to the four corners by the hot melt glue gun 2 installed in the first folding unit, the first The tip of the blank 1 is folded and bonded by the hook 3.

Next, when the blank 1 passes through the first back finger 4, the first back finger 4 is actuated and the rear end of the blank 1 is folded and bonded.
Next, when the blank 1 passes through the second back finger 4 ′ in the second folding portion, the second back finger 4 ′ is actuated to crease the rear end corner portion of the blank 1.
Next, after hot glue glue gun 2 'irradiates and applies glue in two places on the left and right with respect to the advancing direction of blank 1, the second hook 3' applies a crease to the tip corner portion of blank 1. .
Thus, when a crease is given to the front-rear end corner portion of the blank 1, it can be easily assembled when using an assembly-type box.
Next, in the subsequent stage of the second folding part, the blank 1 is conveyed by the upper belt 16 and at the same time, pressure is applied to press the glue part, and the holding belt 17 twisted inward in the left-right direction with respect to the traveling direction of the blank 1. After the left and right end portions are folded and bonded, the pressing portion can be firmly fixed by pressing the bonding portion with the belt press 15.
As a result of the above-described steps, the assembled boxes are aligned and stacked on the alignment conveyor unit shown in FIG.

FIG. 2 thru | or FIG. 4 is a figure explaining the detail of the 1st folding part in embodiment of the box manufacturing apparatus in this invention.
2 to 4, 1 is a blank, 2 is a hot melt glue gun, 3 is a first hook, 4 is a first back finger, 6 is a paper feed control sensor, 7 is a right belt, 8 is a middle belt, 9 Is a left belt, 10 is a hot melt glue sensor, 11 is a receiving roller, 12 is a first back finger sensor, and 13 is a receiving guide.
First, the blank 1 supplied from the paper feeding unit is conveyed from right to left on the conveyor.
The supply of the blank 1 is detected by a paper feed control sensor 6 provided on the upper part of the middle belt 8, and the conveyance control of the conveyor is performed in conjunction with this.
In the present invention, the type of the conveyor is not limited, but from the viewpoint of speed controllability and position accuracy, a crimping conveyor that presses and transports the blank 1 with a pressure of about 7 to 8.5 kg / cm 2 is preferable.
Further, the hot melt glue sensor 10 detects the positions at which the four corners of the blank 1 are glued, and the hot melt glue gun 2 irradiates the detected glue positions.
At this time, since the installation positions of the hot melt glue sensor 10 and the hot melt glue gun 2 are shifted, as shown in FIG. 3, the offset amount is set to the distance A to D in the blank 1 for setting the paste irradiation position. By setting the distance added, glue can be applied to an accurate position.

In the present invention, the hot melt glue sensor 10 may be of any type, but in order to improve the accuracy of position control, an optical sensor is used and a pulse generator is provided, for example, 1 mm = 1. It is preferable to control the irradiation position by counting the number of pulses proportional to the distance, such as pulses.
In the present invention, the type of hot melt glue used as an adhesive is not limited. For example, a quick-drying adhesive that melts at about 200 ° C. and dries immediately after application is preferable. By pressing, the adhesive spreads on the bonding surface and is easily cooled, so that the adhesiveness can be further improved.
Next, when the front end of the blank 1 reaches the position of the first hook 3, the front end portion of the blank 1 is hooked on the first hook 3 and folded upward, and the receiving roller 11 installed in the subsequent stage is placed. Is pressed and folded.
When the blank 1 passes, the first hook 3 comes off the blank 1 and automatically returns to the original position by a spring or an air cylinder.

Next, when the front end of the blank 1 with the front end folded reaches the position of the first back finger sensor 12, the first back finger sensor 12 detects the position where the rear end of the blank 1 is folded, As the first back finger 4 rotates, the rear end of the blank 1 can be folded upward.
At this time, since the installation positions of the first back finger sensor 12 and the first back finger 4 are shifted, as shown in FIG. 4, the skip length in the blank 1 for setting the back finger contact position, By setting a distance obtained by adding an offset amount to the flap length and the nail length of the back finger, the back finger can be brought into contact with an accurate position.

In the present invention, the method of the first back finger sensor 12 is not limited, but in order to improve the accuracy of position control, an optical sensor is used, and a pulse generator is provided, for example, 1 mm. It is preferable to control the operation of the first back finger 4 by counting the number of pulses proportional to the distance, such as = 1 pulse.
4 shows the stop position, the contact point position, and the work completion position of the first back finger 4 from the right. In the case of a standby pear, the claw arm starts from the vertical position. In the case of a waiting ant, the arm of the claw starts from a position inclined, for example, 30 degrees in the traveling direction of the blank 1.
As described above, by selecting the standby pail or the standby ant and changing the arm start position, the cycle time of the back finger operation can be changed. For example, when the blank 1 is small, the standby pear is selected and the blank is selected. The box manufacturing efficiency can be improved by reducing the distance between the boxes.
Although the driving method of the first back finger 4 is not limited, it is preferable to perform timing control that counts the number of pulses proportional to the distance by using a servo motor with easy speed control.
The blank 1 in which the rear end portion is folded by the above steps is folded by being pressed by the receiving guide 13 in the folded state.

5-7 is a figure explaining the detail of the 2nd folding part in embodiment of the box manufacturing apparatus in this invention.
5 to 7, 1 is a blank, 2 'is a hot melt glue gun, 3' is a second hook, 4 'is a second back finger, 10' is a sensor for hot melt glue, and 12 'is a second sensor. A back finger sensor 16 is an upper belt.
First, the blank 1 supplied from the first folding part is conveyed on the conveyor from right to left.
Next, when the leading edge of the blank 1 reaches the position of the second back finger sensor 12 ′, the second back finger sensor 12 ′ detects a position where the rear corner portion of the blank 1 is creased, As the second back finger 4 ′ rotates, the rear corner portion of the blank 1 can be creased by bending upward as shown by the arrows in FIGS. 5 and 6, When using an assembly box, the box can be easily assembled.
At this time, since the installation positions of the second back finger sensor 12 ′ and the second back finger 4 are shifted, as shown in FIG. 6, the scan length in the blank 1 for setting the back finger contact position By setting the distance obtained by adding the offset amount to the flap length and the claw length of the back finger, the back finger can be brought into contact with an accurate position.

Further, in the present invention, the method of the second back finger sensor 12 'is not limited, but in order to improve the accuracy of position control, an optical sensor and a pulse generator are provided, for example, It is preferable to control the operation of the second back finger 4 ′ by counting the number of pulses proportional to the distance, such as 1 mm = 1 pulse.
6 shows the stop position, the contact point position, and the work completion position of the second back finger 4 'from the right. In the case of the standby pear, the claw arm is moved from the vertical position. In the case of a waiting ant, the claw arm starts from a position inclined, for example, 30 degrees in the direction of travel of the blank 1.
As described above, by selecting the standby pail or the standby ant and changing the arm start position, the cycle time of the back finger operation can be changed. For example, when the blank 1 is small, the standby pear is selected and the blank is selected. The box manufacturing efficiency can be improved by reducing the distance between the boxes.
Although the driving method of the second back finger 4 ′ is not limited, it is preferable to perform timing control that counts the number of pulses proportional to the distance using a servo motor that can easily control the speed.

Next, the position where the hot melt glue sensor 10 'glues the left and right two places with respect to the traveling direction of the blank 1 is detected, and the hot melt glue gun 2' irradiates the detected glue position.
At this time, since the installation positions of the hot melt glue sensor 10 'and the hot melt glue gun 2' are shifted, the distances A and B in the blank 1 for setting the paste irradiation position are as shown in FIG. By setting the distance to which the offset amount is added, it is possible to irradiate glue at an accurate position.
In the present invention, the hot melt glue sensor 10 may be of any type, but in order to improve the accuracy of position control, an optical sensor is used and a pulse generator is provided, for example, 1 mm = 1. It is preferable to control the irradiation position by counting the number of pulses proportional to the distance, such as pulses.
In the present invention, the type of hot melt glue used as the adhesive is not limited, but a quick-drying adhesive that melts at, for example, about 200 ° C. and dries immediately after application is preferable.

Next, when the tip of the blank 1 reaches the position of the second hook 3 ', the tip of the blank 1 is hooked on the second hook 3' and folded downward as shown by the arrow in FIG. By making this crease, the box can be easily assembled when the prefabricated box is used.
When the blank 1 passes, the second hook 3 'is detached from the blank 1 and automatically returns to the original position by a spring or an air cylinder.
Thereafter, the blank 1 is conveyed by the upper belt 16, and at the same time, pressure is applied to press the glued portion, and the left and right ends of the blank 1 are folded with respect to the traveling direction of the blank 1 by the holding belt 17 twisted inward in the left-right direction. Folding can be completed.

FIG. 8 is a diagram showing details of the press section in the embodiment of the box manufacturing apparatus of the present invention.
In FIG. 8, 14 is a press belt sensor, and 15 is a press belt.
First, the blank 1 that has been folded in the second folding section is supplied to the press section. First, when the leading end of the blank 1 reaches the position of the press belt sensor 14, the press belt sensor 14 advances the blank 1. It can be bonded by detecting the press position for pressing the glued portion where the left and right end portions with respect to the direction are folded and pressing the glued portion while the press belt 15 rotates.
At this time, since the contact position between the press belt sensor 14 and the press belt 15 is shifted, an offset as shown in FIG. 8 is added to the distance to the glue application position in the blank 1 for setting the contact position of the press belt 15. By setting the distance to which the amount is added, the press belt 15 can be brought into contact with an accurate position.

In the present invention, the method of the press belt sensor 14 is not limited, but in order to improve the accuracy of position control, an optical sensor is used and a pulse generator is provided, for example, 1 mm = 1 pulse. Thus, it is preferable to control the operation of the press belt 15 by counting the number of pulses proportional to the distance.
According to this embodiment, a series of operations of glue irradiation, folding, and pressing can be performed without stopping while conveying a blank, and as a result, a box of 100 to 120 pieces / min can be manufactured. Moreover, it has been confirmed that the accuracy of the gluing and folding positions can be improved.

It is a whole top view which illustrates an embodiment of a box manufacture device in the present invention. It is a figure explaining the detail of the 1st folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure explaining the detail of the 1st folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure explaining the detail of the 1st folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure explaining the detail of the 2nd folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure explaining the detail of the 2nd folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure explaining the detail of the 2nd folding part in embodiment of the box manufacturing apparatus in this invention. It is a figure which shows the detail of the press part in embodiment of the box manufacturing apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blank 2, 2 'Hot melt glue gun 3 1st hook 3' 2nd hook 4 1st back finger 4 '2nd back finger 5 Power supply inlet 6 Feed control sensor 7 Right belt 8 Middle belt 9 Left Belt 10, 10 ′ hot melt glue sensor 11 receiving roller 12 first back finger sensor 12 ′ second back finger sensor 13 receiving guide 14 press belt sensor 15 press belt 16 upper belt 17 holding belt

Claims (4)

A box manufacturing apparatus for manufacturing a prefabricated box by gluing and cutting a blank that has been cut and creasing,
A hot melt glue sensor for detecting the position to be glued;
A hot melt glue gun for irradiating glue at the glue position detected by the hot melt glue glue sensor;
A first hook that hooks and folds the tip of the blank;
A first back finger sensor for detecting the position of folding the rear end of the blank;
A box manufacturing apparatus comprising: a first back finger that folds a rear end portion of a blank detected by the back finger sensor. further,
A second back finger sensor for detecting the fold position of the rear corner portion of the blank;
A second back finger that creases the corner of the rear end of the blank detected by the second back finger sensor;
A second hook that creases the front end corner of the blank;
A sensor for a press belt that detects a press position for pressing a glued portion that is folded at the left and right ends with respect to the traveling direction of the blank;
The box manufacturing apparatus according to claim 1, further comprising: a press belt that presses a pasting portion detected by the press belt sensor. A box manufacturing method using the box manufacturing apparatus according to claim 1,
According to the number of pulses proportional to the distance from the hot melt glue sensor to the detected gluing position, irradiation of the hot melt glue gun is started for a certain distance,
When the blank reaches the position of the first hook, the hook device hooks and folds the tip of the blank,
A box manufacturing method, wherein the first back finger is operated according to the number of pulses proportional to the distance from the first back finger sensor to the position at which the rear end of the blank is folded. A box manufacturing method using the box manufacturing apparatus according to claim 2,
The second back finger is operated according to the number of pulses proportional to the distance from the second back finger sensor to the crease position of the rear end corner of the blank, and the crease is formed at the rear end corner of the blank. With
When the blank reaches the position of the second hook, the hook makes a crease at the tip corner of the blank,
A box manufacturing method, wherein the press belt is operated in accordance with a pulse number proportional to a distance to a press position for pressing a glued portion detected from the press belt sensor.

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