JP2002240807A - Wrap-round packaging method and packaging apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrap-round packaging method by a lock-type carton and an apparatus therefor. SOLUTION: The wrap-round packaging apparatus by the lock-type carton is provided wherein a blank sheet D with an article A mounted is pressed downward together with the article A, a sidewall between slits is expanded outward while both sidewalls of the carton equipped with the slits of the blank sheet D are folded, other sidewalls of the carton of the blank sheet D are folded meanwhile to insert a flap of the sidewall into the slit, and the slit provided on the flap and the slit of the sidewall which has been folded previously are engaged with each other to form the carton.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrap round packaging device, and more particularly to a wrap round packaging device for supplying stacked or stacked articles on a blank sheet and wrapping the cartons into a carton to store the articles. It concerns the device.

[0002]

2. Description of the Related Art FIG. 12 is a schematic view of a main part of a conventional wrap round packaging apparatus. The wrap round packaging device 1
This is a packaging device that stores the articles A placed on the glue-type blank sheet B so as to wrap them. Blank sheet B is
It is conveyed from the carton magazine to the wrap round packaging mechanism 3 via the carton conveying device 2. Blank sheet B
In the process of being conveyed by the carton conveying device 2, the hot melt adhesive discharged from the adhesive supply device 4 adheres to a predetermined position of the blank sheet B and is supplied to the wrap round packaging mechanism 3.

[0003] The adhesive discharging device 4 starts a time measurement based on a detector 4a for detecting the blank sheet B, a hot melt gun 4b for discharging the hot melt adhesive, and a detection signal from the detector 4a. It comprises a timing device 4c for operating the hot melt gun 4b at a timing up to the installation position of the melt gun 4b, and a supply device 4d for supplying the hot melt adhesive.

[0004] The blank sheet B is placed in a carton conveying device 2.
In the process of being conveyed to the wrap round packaging mechanism 3, the detector 4a detects the passage of the blank sheet B, sends a detection signal to the timer 4c, activates the hot melt gun 4b at a predetermined timing, and The adhesive is applied to a predetermined position of the blank sheet B. The blank sheet B to which the hot melt adhesive C has adhered is conveyed to the wrap round packaging mechanism 3 and stopped at a predetermined position, and the stacked articles A are placed on the blank sheet B by the article supply device 5. Is done.

The article A placed on the blank sheet B is
Pressing mechanism 6 including male mold 6a together with blank sheet B
And fed into the folding mechanism 7 such as a female mold. In the folding mechanism 7, as shown in the blank sheet B in FIGS. 13A and 13B, the article A is placed on the bottom panel B1 of the blank sheet B, sent to the folding mechanism 7, and The panel B3 and the back panel B4 are bent, and the flaps F1 to F4 are bent. Subsequently, the side panel B2 is bent and sent to the holding mechanism 9. In the holding mechanism 9, the hot melt adhesive C adhered to both inner sides of the side panel B2
Is bonded to the flaps F1 to F4 of the front panel B3 and the back panel B4 to form a carton 11 'containing the article A from the blank sheet B.
Is released and sent downward, and by the sending device 10,
It is sent to the transport device 12.

[0006]

However, FIG.
In the conventional wrap round packaging apparatus shown in the above, when forming the carton 11 ', an adhesive discharging apparatus 4 for applying the hot melt adhesive C to a predetermined position of the blank sheet B must be provided. The adhesive discharging device 4 includes:
A melting device for melting the hot melt adhesive is provided, and the melted hot melt adhesive is sent to the hot melt gun 4b by a pump and discharged. Furthermore, the wrap round packaging apparatus has a time-measuring device (timing adjusting mechanism) for adjusting the timing of applying the hot melt adhesive, and has a disadvantage that it becomes an expensive device.

In order to keep the hot melt adhesive in a molten state, the adhesive discharging device 4 is provided with a heater and is maintained at a constant temperature by a temperature controller to prevent the adhesive from hardening. Must be prevented. Therefore, wasteful power is consumed even when the operation is suspended, and maintenance and management thereof are accompanied by difficulties. Furthermore, since it is necessary to energize the heater even when the operation is stopped and the hot melt adhesive must be melted at all times, the heat source always has the heat source, and attention is paid to burns and the like during maintenance. It needed to be handled with great care. Furthermore, some products do not like heating itself, and a wrap round packaging apparatus that does not use a hot melt adhesive when assembling a carton has been desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a wrap round packaging method using a lock type carton and an apparatus therefor.

[0009]

Means for Solving the Problems The present invention has achieved the above-mentioned object, and the invention of claim 1 is a wrap-around packaging method using a lock-type carton, in which a blank sheet on which articles are placed is provided. Pressing down with the article, expanding the side walls between the slits outward while bending both side walls of the carton provided with the slits of the blank sheet, while bending the other side walls of the carton of the blank sheet during the bending Inserting the flap of the side wall into the slit, and mutually engaging the slit provided in the flap with the slit of the side wall bent earlier to form a carton, and storing an article in the carton. This is a characteristic wrap round packaging method.

According to the first aspect of the present invention, there is provided a wrap round packaging method in which, when a black sheet is bent to form a carton, an article is placed on the black sheet and bent. When inserting the flap of the other carton side wall into the slit provided in the carton side wall, the side wall between the slits of the carton side wall is expanded outward, and both side ends of the side wall are not expanded from the slit, so that the slit is formed. Opened and pressed further down, the flaps of the other carton side walls are bent, the tips of the flaps are inserted into the slits and engaged with each other, and the carton is assembled and items are stored in the carton. .

According to a second aspect of the present invention, each of the slits on the both side walls is provided with a concave and convex portion, and the convex portion of the concave and convex portion is inserted into a slit provided on the flap, so that the slit on the side wall and the slit on the side wall are formed. The wrap round packaging method according to claim 1, wherein the slits of the flap are engaged with each other.

According to the second aspect of the present invention, an uneven portion is formed in the slit of the carton side wall, and the convex portion is inserted into the slit provided on the flap so that adjacent carton side walls are engaged with each other. This forms a lock-type carton.

According to a third aspect of the present invention, there is provided a wrap round packaging apparatus using a lock-type carton, wherein a pressing means for pushing out a blank sheet on which an article is placed together with the article, and a tip end of the pressing means are provided. A male mold for bending the side wall of the blank sheet while expanding the side wall while surrounding the article, and the pressing means,
While extruding the article and the blank sheet downward, a female mold that defines a procedure for folding the carton side wall by the blank sheet, and protruding substantially at the center in the female mold to stably lower the carton containing the article. And a bottom mechanism for holding a carton on which the article is placed, and an extruding means for pushing out the article in the male mold.

According to a third aspect of the present invention, there is provided a wrap round packaging apparatus using a lock-type carton, wherein a blank sheet on which an article is placed is pushed out together with the article by a pressing means having a male mold, and the article is placed in the male mold. Bending the carton side wall of the blank sheet while encircling and pushing down the article, pushing out the article and the blank sheet downwards, while sequentially pushing the carton side wall of the blank sheet with a female mold that defines the folding procedure of the carton side wall. Bending,
This is a wrap round packaging apparatus that stably lowers a carton containing articles by a bottom mechanism, and then ejects and ejects the articles in the male mold by an extrusion means.

According to a fourth aspect of the present invention, in the wrap round packaging apparatus according to the third aspect, the male mold has an expansion mechanism for expanding the gap between the slits of the carton side wall outward. By the mechanism, the gap between the slits of the carton side wall is expanded outward, the slit is opened, and the flap can be easily inserted.

Further, the invention according to claim 5 is characterized in that the bottom mechanism supports a process of lowering the blank sheet on which the article is placed and bending the blank sheet to form a carton, and a step of loading the article. The wrap round packaging according to claim 3 or 4, further comprising a lock mechanism for locking adjacent cartons with each other while locking the cartons storing the articles in a process of lowering the placed blank sheet. Device.

According to a fifth aspect of the present invention, the bottom mechanism includes a support mechanism and a lock mechanism, and the support mechanism has a function of stably lowering the blank sheet on which the article is placed, and the lock mechanism operates the blank sheet containing the article. There is an effect that the corners of the sheet can be reliably bent so that adjacent side walls are engaged with each other to form a carton.

According to a sixth aspect of the present invention, in the wrap round packaging apparatus according to the third, fourth or fifth aspect, the transfer means for placing an article on the blank sheet and the carton discharged by the pushing means are provided. And conveying means for sending the stored article to the next step.
A wrap round packaging apparatus according to 4 or 5.

Further, according to the invention of claim 6, the placing means for placing the article on the blank sheet is provided adjacent to the blank sheet, and the carton in which the article is stored is ejected to the next step. An article can be placed on a blank sheet to be supplied, and the article stored in the carton can be sent out to the transporting means in the next step by the sending means, so that the carton containing the article can be sent out continuously.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wrap round packaging method and a packaging apparatus according to the present invention will be described below with reference to FIGS. FIG. 1 is a schematic side view showing one embodiment of the wrap round packaging device of the present invention, and FIG. 2 is a schematic plan view of this embodiment. 3 to 6 are views showing one embodiment of each unit of the present embodiment. 7 to 10 are diagrams illustrating a procedure for bending a blank sheet. FIG. 11 is a diagram showing another embodiment of the expansion mechanism.

The wrap round packaging device of the present embodiment
This is a packaging device for storing articles placed on a blank sheet in a lock-type carton while bending the blank sheet. As shown in FIGS. 1 and 2, the wrap round packaging mechanism 13 includes a pressing mechanism using a pressing cylinder 14a. And the female mold 1 on which the blank sheet D is placed
8, a support mechanism 20 for holding and stably lowering the article A placed on the blank sheet D, and a lock mechanism 21 for holding a carton containing the article A and mutually engaging required parts. Bottom mechanism 19 and article A in male mold 14
And an extruding mechanism 17 for knocking down.

The wrap round packaging mechanism 13 includes a carton magazine 2a for supplying a blank sheet D, a carton transport device 2 for transporting the blank sheet D supplied from the carton magazine to the wrap round packaging mechanism 13,
A delivery mechanism 10 for sending out the article A stored in the carton 11 to the next process by the wrap round packaging mechanism 13;
And a transport device 12 for transporting the carton 11 containing the article A sent out by the sending mechanism 10.
The article A placed on the blank sheet D can be automatically stored in a carton and continuously sent to the next process.

First, the operation of the wrap round packaging apparatus of the present embodiment will be briefly described. The blank sheet D supplied from the carton magazine 2a is sent to the female mold 18 of the wrap round packaging mechanism 13 by the carton transport apparatus 2. The article A is placed on the female die 18 by the transfer mechanism 24 on the blank sheet D. Subsequently, the pressing mechanism 14a is driven to surround the article A in the male mold 13, push down the article A together with the blank sheet D, and pass the blank sheet D into the female mold 18 to bend the carton side wall. Thus, it is a wrap-around packaging device using a lock-type carton that forms the carton 11 and stores the item A in the carton 11.

The articles A are sent to the transfer mechanism 24 via the stacking device by the transport device 23, and the stacked articles A are transported.
Are placed on the blank sheet D by the transfer mechanism 24. The transfer mechanism 24 is not particularly limited, and may have any structure.

First, a blank sheet of a lock type carton will be described with reference to FIG. The blank sheet D is provided with a side panel (carton side wall) D2, a front panel (front wall) D3, and a back panel (rear wall) D4 on opposing sides of a square bottom panel (bottom plate) D1. Flaps F1 to F4 are provided on D3 and the back panel D4. Slits S1 and S2 are cut into the side panel D2, and S-shaped uneven portions P are provided in the slits S1 and S2, and convex portions P1 protruding outside the uneven portions P are formed. I have.

Next, each configuration of the wrap round packaging apparatus of the present embodiment will be described with reference to FIGS.
As shown in FIG. 3, the male mold 14 has an outer shape similar to the inner wall of the carton, and an expansion mechanism 15 that moves up and down in conjunction with the male mold 14 is provided around the male mold 14. The expansion mechanism 15 includes an expansion plate 16. The expansion plate 16 is for expanding the carton side wall of the blank sheet D to the outside in addition to the mold defined by the male mold 14. The expansion plate 16 is provided so as to hang down from the expansion arm portion 15 a, and further includes an expansion cylinder 15 for raising and lowering the expansion mechanism 15.
b is connected to the extension arm 15a. In addition, male 1
At the upper part in 4, an extruding mechanism 17 comprising an extruding cylinder 17b and a disc-shaped member 17a connected to the tip thereof is provided. The extrusion cylinder 17b is penetrated into the support shaft 14b to which the male die 14 is connected.

The female die 18 is formed with an opening 18d through which the male die 14 penetrates, and is formed of blocks 18a, 18b, and 18c having different heights in the order in which the carton side walls are bent. Extruding 14 downward defines the order in which the carton sidewalls of the blank sheet are folded. As shown in FIG. 4, the female mold 18 has slits S cut into the side panel D2.
In order to open S1 and S2, an inclined groove 18e cut to a width substantially equal to the length between the slits S1 and S2 is formed as a block 18a.
Are formed on both sides of the block 18a, and an inclined surface 18f which is steeper than the inclined groove 18e is formed. The blocks 18a and 18b are arranged to face each other. The block 18c of the female part for bending the front panel and the back panel is assembled at a position lower than the block 18a. The expansion mechanism 1 is provided in the inclined groove 18e.
The fifth expansion plate 16 can be inserted hanging down to an appropriate position.

The bottom mechanism 19 includes a support mechanism 20 and a lock mechanism 21 as shown in FIGS. The support mechanism 20 includes a circular mounting table 20a and an elevating cylinder 20b coupled to a bottom surface of the center of the circular mounting table 20a. The circular mounting table 20a projects from below the center of the female die 18 and is substantially flush with the upper part of the female die 18. , A black sheet D is placed, and an article A is placed on the black sheet D. In response to the male pressing mechanism, the circular mounting table 20a of the support mechanism 20 places the article A on the black sheet D and descends. On the other hand, the lock mechanism 21 includes a corner-correcting bearing 25 that slowly presses and holds the four corners of the carton 11;
When the carton in which the articles are stored is lowered, the lock arm 26 provided with a bearing 26c at the tip is pressed at the bottom of the carton 11 and pivots downward, pressing the side wall of the carton 11 from the outside to lock. And a locking bearing 26b. Lock arm 26
Is fixed to a rotating shaft 26a, and a return lever 27 is fixed to one end of the rotating shaft 26a. These mechanisms are provided symmetrically, and the left and right return levers 27 are contracted by a spring 28 so that the lock arm 26 returns to a predetermined position and to the position shown by the solid line.

The angle correcting bearing 25 is rotatably mounted on the arm 25a, and the bearing portion is gently pressed against the carton by the spring 25b, so that the corner of the carton is reliably bent. .

Next, an embodiment of a wrap round packaging method for assembling a lock-type carton while accommodating the article A will be described with reference to FIGS. First,
The circular mounting table 20a of the support mechanism 20 rises from below the center in the female die 18 to a position on the same plane as the upper part of the female die 18.
The blank sheet D is sent from the carton magazine 2a to the female mold 18 of the wrap round packaging mechanism 13 via the carton transport device 2. A guide wall 2 is provided around the female mold 18.
2a, 22b, and 22c are provided, and the blank sheet D is accurately fed into the upper part of the female die 18. The stacked articles A are transferred to the blank sheet D by the transfer device 24.
Is mounted on the bottom panel D1.

At the same time as the expansion plate 16 of the expansion mechanism 15 is inserted into the inclined groove 18e of the female die 18, the main body of the male die 14 descends and the male die 14 containing the article A is pushed downward. Thereby, first, both carton side walls D2 of the blank sheet D are bent by the block 18a of the female die 18.
Since the expansion plate 16 is inserted into the inclined groove 18e,
The side wall between the slits S1 and S2 of the carton side wall D2 is extended outward, and the slits S1 and S1 of the carton side wall D2.
The end from S2 is bent at the steeply inclined portion 18f of the female die 18. Further, when the blank sheet D on which the article A is placed is pushed down, the block 1 of the female mold 18 is pressed.
8c, the front panel D3 and the back panel D4 are bent, and the flaps F1 to F4 are bent, and as shown in FIGS.
1, flaps F1 to F4 are inserted.

The lower end of the carton 11 is lowered while the four corners of the lower end are held by the corner-correcting bearings 25, and the four locking bearings 26b are attached to the carton side walls D.
By pressing the inside of the second slits S1 and S2, the tips of the flaps F1 to F4 are pushed, and the slits S3 and S4 of the flaps F1 to F4 are expanded. This extended slit S
3, S4, the convex portion P1 of the concave and convex portion P is inserted. Convex part P1
In order to facilitate insertion into the slits S3 and S4, when the carton side wall D2 is pushed by the locking bearing 26b, the front end portions of the flaps F1 to F4 are pushed inward to expand the slits S3 and S4. In addition, the male mold 14 has an opening 14c so that it can easily bend when the carton side wall D2 is pressed by the locking bearing 26b.

As described above, the respective convex portions P1 formed in the slits S1 and S2 of the carton side wall portion D2 correspond to the flaps F1 to F4 of the front panel D3 and the back panel D4.
Are inserted into the slits S3 and S4, the side walls of the carton are mutually engaged and locked.

The carton 11 in which the article A is stored is held by the lock mechanism 21. By pushing out the disc-shaped member 17a of the pushing mechanism 17 provided at the upper part in the male mold 14, the male mold 14 is pushed out. The article A in the container falls down while being stored in the carton 11, and the carton 11 dropped by the sending device 10 is sent to the transfer device 12 and transferred to the next step.

Incidentally, the male expansion mechanism 15 is not limited to the above-described embodiment, and as shown in FIG.
An actuator 29 may be provided on the upper part of the male mold 14, and an expansion plate 16 may be provided at the tip of the drive shaft so as to expand outward when the male mold 14 is lowered.

[0036]

As described above, according to the present invention, it is possible to assemble articles while storing them in a lock-type carton. In this assembling step, the gluing step can be omitted, so that the packaging apparatus can be used. In addition to being able to provide itself at low cost, it does not require a heat source to melt the adhesive, so safety during work can be improved and concerns about burns during maintenance can be eliminated. In addition, there is an advantage that costs required for maintenance can be reduced.

Further, according to the present invention, since the articles can be stored while assembling the lock-type carton, the efficiency of the packing operation of the articles can be improved, and the production cost can be substantially suppressed or reduced. There are advantages that can be done.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing one embodiment of a wrap round packaging device of the present invention.

FIG. 2 is a schematic plan view of the embodiment.

FIG. 3 is a schematic perspective view showing a main part of the wrap round packaging mechanism of the embodiment.

FIG. 4 is a schematic perspective view showing a female mold of the present embodiment.

FIG. 5 is a schematic plan view showing a bottom mechanism of the embodiment.

FIG. 6 is a schematic side view showing the bottom mechanism of the present embodiment along the XY line in FIG.

FIG. 7 is a development view of a blank sheet.

FIG. 8 is an assembled perspective view of a lock-type carton.

FIG. 9 is a perspective view illustrating a procedure for folding a lock-type carton.

FIG. 10 is a perspective view illustrating a procedure for folding a lock-type carton.

FIG. 11 is a schematic perspective view showing another embodiment of the expansion mechanism according to the present invention.

FIG. 12 is a schematic side view showing an example of a conventional wrap round packaging apparatus.

FIG. 13 is a development view of a blank sheet in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Carton 12 Conveying device 13 Wrap round packaging mechanism 14 Male type 14a Extrusion cylinder 14b Support shaft 15 Extension mechanism 15a Extension arm part 15b Extension cylinder 16 Extension plate 17 Extrusion mechanism 17a Disk-shaped member 17b Extrusion cylinder 18 Female type 18a, 18b, 18c Block 18d Opening 18e Inclined groove 18f Inclined surface 19 Bottom mechanism 20 Support mechanism 20a Circular mounting table 20b Elevating cylinder 21 Lock mechanism 22a to 22c Guide wall 23 Transport device 24 Transfer mechanism 25 Angle correction bearing 26 Lock arm 26a Rotating shaft 26b Lock bearing 26c Bearing 27 Return lever 28 Spring D Blank sheet D1 Bottom panel (bottom plate) D2 Side panel (carton side wall) D3 Front panel (front wall) D4 Back panel (Rear wall) S1 to S4 slit P S-shaped uneven portions P1 projecting portion F1~F4 flap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B31B 5/50 B31B 5/50 (72) Inventor Nobuyuki Iso 4-14-12 Koishikawa, Bunkyo-ku, Tokyo Joint F-term in Printing Co., Ltd. (reference) 3E003 AA01 AA07 AB03 BA03 BB02 BB05 BE02 CB06 DA02 DA03 3E030 AA02 BB05 BC02 CA05 CA09 DA06 EA01 EB03 GA03 3E056 BA05 CA04 DA03 EA02 FF02 3E060 AA03 AB18 BC02 BC04 CG10 AGA CG10 CG12 DA07 CA01 DC17 DC28 DC44 DD27 DD45 DE25 GA03

Claims (6)

[Claims] 1. A wrap round packaging method using a lock-type carton, wherein a blank sheet on which an article is placed is pressed downward together with the article, and the blank sheet is bent while bending both side walls of the carton provided with slits. The side wall between the slits is expanded outward, and the other side wall of the carton of the blank sheet is bent while inserting the flap of the side wall into the slit, and the slit provided on the flap is bent first. A wrap round packaging method, characterized in that a carton is formed by mutually engaging slits in a side wall and articles are stored in the carton. 2. An uneven portion is provided in each slit of the both side walls, and a convex portion of the uneven portion is inserted into a slit provided in the flap so that the slit of the side wall and the slit of the flap are mutually connected. 2. The wrap round packaging method according to claim 1, wherein the wrap round packaging is engaged. 3. A wrap round packaging apparatus using a lock-type carton, comprising: a pressing means for pushing a blank sheet on which an article is placed together with the article downward; and a blank provided at a tip end of the pressing means and surrounding the article. A male mold for bending the side wall of the sheet and expanding the side wall, and a female mold for defining a procedure for folding the carton side wall by the blank sheet while extruding the article and the blank sheet downward by the pressing means; A bottom mechanism that protrudes substantially in the center of the female mold, stably lowers the carton containing the article, and holds the carton on which the article is placed, and a pushing unit that ejects the article in the male mold, A wrap round packaging device, characterized in that: 4. The wrap round packaging apparatus according to claim 3, wherein the male mold has an expansion mechanism for expanding the gap between the slits of the carton side wall outward. 5. A support mechanism for supporting a process of lowering a blank sheet on which an article is placed and bending a blank sheet to form a carton, and lowering the blank sheet on which the article is placed. The wrap round packaging apparatus according to claim 3 or 4, further comprising: a lock mechanism that locks the carton containing the articles in the process and mutually engages side walls of adjacent cartons. 6. The wrap round packaging apparatus according to claim 3, wherein the transfer means for mounting the article on the blank sheet and the article stored in the carton discharged by the extrusion means are provided in the next step. 6. A wrap round packaging apparatus according to claim 3, further comprising a conveying means for sending the wrap round packaging sheet to the wrap round packaging apparatus.