JPS6340414Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for forming cartons for storing confectionery, etc., and more specifically, the invention relates to an apparatus for forming cartons for storing sweets, etc. This relates to a box forming device.

[Conventional technology]

Cartons have traditionally been used as containers for various articles due to their convenience in handling and ease of disposal. Usually, such cartons are supplied as pre-folded sheet-like carton blanks, and the process is such that the blanks are opened and then the articles are placed inside. In conventional carton box manufacturing equipment, the carton is opened through several steps, or by sucking air into the sheet blank at the opening section, or by inserting a knife and rotating it. Measures were taken such as opening the boxes.

[Problem that the invention attempts to solve]

However, such conventional devices require complicated steps and are difficult to open reliably, often resulting in incomplete opening. Moreover, it has been even more difficult to accurately open polygonal cartons such as hexagonal and octagonal, which have been increasingly used in recent years.

The present invention was developed in view of the above-mentioned drawbacks, and uses a mechanism to suck up individual blanks from a blank holding member that holds a large number of stacked polygonal cross-section carton blanks folded into sheets. A carton that uses the take-out action to create a gap between the top and bottom surfaces of the folded blank during the delivery process to the blank forming mechanism, allowing the carton to be formed more reliably. The purpose is to provide box manufacturing equipment.

[Means for solving problems]

In order to achieve the above object, the present invention includes a blank holding member that stacks and holds a large number of polygonal cross-section carton blanks folded into sheet shapes, and a take-out mechanism that suctions the bottom surface of the stacked blanks to take them out one by one. and a forming mechanism for forming a blank delivered from the take-out mechanism into a cylindrical carton, wherein the carton blank is taken out by suction from the blank holding member by the take-out mechanism and delivered to the molding machine. an interference member that is fixedly installed in the conveying path of the carton blank, projects into the path, and interferes with an exposed portion of the flap located on the upper side exposed from the outer shape of the flap located on the lower side of the carton blank folded into a sheet shape; It is characterized by having the following.

[Effect]

In the present invention, each blank that is suctioned out from the carton holding member by the take-out mechanism is engaged by the interference member during the delivery process to the forming mechanism, so that the upper flap is raised relative to the lower flap. As a result, the space between the upper and lower surfaces of the blank is expanded, and subsequent opening operations can be made more reliable.

〔Example〕

Hereinafter, the present invention will be explained based on illustrated embodiments. FIG. 1 shows the entire apparatus for filling polygonal cross-section cartons with the contents.
Reference numeral 1 denotes a blank holding member that holds carton blanks that have been folded in advance into sheets and stacked on top of each other; 2 a mechanism that takes out carton blanks one by one from the blank holding member 1;
As will be described in detail later, the upper flap of the carton blank is moved while interfering with an interference pin (not shown) to create a gap between the top and bottom surfaces of the carton blank, thereby creating a cylindrical shape in a later process. Makes forming into cartons easier. 3 is a sheet conveyor that conveys the carton blanks delivered from the take-out mechanism 2 in the direction of the arrow shown in the figure. It is composed of a feed pawl 9 (see FIG. 5) attached to each. 10 is a carton conveyor that is connected to the downstream end of the sheet conveyor 3 with a part of it overlapping, and a chain 15 that runs around sprockets 11, 12, 13, and 14 and a feed attached to this chain 15. The carton conveyor receives the carton conveyor from the sheet conveyor 3, receives the carton blank from the blank 3, and opens the blank to form it into a cylindrical shape. 7 and 9 between the sheet conveyor 3 and carton conveyor 10.
As shown in the figure, a separation guide 16 is provided which pushes up the upper flap of the carton blank from the lower surface to open the upper and lower flaps. Therefore,
The carton blanks accommodated in the blank holding member 1 are taken out one by one by the take-out mechanism 2,
The sheet is lowered while interfering with the interference pin and delivered to the sheet conveyor 3. Next, the carton is conveyed to the conveyor 3 and transferred to the carton conveyor 10 while riding on the separation guide 16. During this process, it is formed into a cylindrical carton, and while being further conveyed in the direction of the arrow, it is filled with contents and sealed. It is discharged by a discharge mechanism (not shown).

Next, the configurations of the blank holding member 1 and the take-out mechanism 2 will be explained in detail with reference to FIGS. 2 to 5. The blank holding member 1 has a plurality of support plates 17 that support the outer periphery of carton blanks A stacked in sheet form. These support plates 17 are erected on a support member 19 attached to an outer frame 18, and can be moved along long holes 19a of the support member 19 by loosening adjustment screws 17a. Similarly, outer frame 18
Since it can be moved along the elongated hole 18a, carton blanks A of various sizes can be accommodated. Additionally, the upper end of each support plate is bent slightly outward to facilitate replenishment of the carton blank A. The carton blank A is locked to the locking part 17b provided at the lower end of the support plate 17, and the take-out mechanism 2
The sheets are taken out one by one starting from the bottom one.

Reference numeral 20 denotes a suction cup of the take-out mechanism 2, and as shown in FIG.
is placed above. And the horizontal plate 23 is the axis 2
It is connected via a connecting rod 26 to one end of an arm 25 that swings about 4 as a fulcrum. Therefore, the suction cup 20 moves between the lower surface of the blank holding member 1 and the sheet conveyor 3 as the arm 25 swings.
It moves up and down along the rod 23. The above suction cup 20
Each is provided with a suction port 27 that communicates with a vacuum pump (not shown). The vacuum pump is designed to operate in synchronization with the rise and fall of the suction cup 20, and when the suction cup 20 rises, the blank A is sucked by the vacuum action and taken out from the holding member 1, and when it descends, it is released and moved to the sheet conveyor 3. Deliver to.

Here, the shape of the carton applied to the apparatus of this embodiment will be explained. Figure 6 shows a carton with a rectangular cross section folded into a sheet.
This carton blank A has a top surface a, a bottom surface b, side surfaces c and d, an upper flap e, a lower flap f, a front flap g, and a rear flap h,
The upper flap e has a width l wider than the lower flap f and the front flap g located below in the folded state, and a wedge-shaped notch i is formed between the lower flap f and the front flap g. ing.

28 is a pair of interference members provided below the blank holding member 1 and facing each other (see FIGS. 2 to 4). These interference members 28 each have three pins 29, 30 arranged vertically in parallel,
31, the first pin 29 is a straight pin, the second and third pins 30, 31 are tapered pins, and from the first pin 29 to the third pin 31
It is arranged so that it gradually protrudes inward. The interference member 28 is connected to the elongated hole 19 of the support member 19.
It is fixed in a by a fixing bolt 32,
Like the support plate 17 described above, it can be moved along the long hole 19a. Therefore, when using the above-mentioned carton blank A shown in FIG. 6, it is arranged so as to match the position of the notch i of the above-mentioned carton A. By arranging the interference member 28 below the blank holding member 1 in this way,
A sheet-like carton accommodated in the holding member 1
The blank A is taken out by the take-out mechanism 2 that has come up from below.
It is adsorbed by the vacuum action of the suction cup 20,
The carton is taken out by the lowering of the take-out mechanism 2, and in the process of being further lowered, the first pin 29 that has passed through the notch i interferes with the upper flap e, and the top surface a and the bottom surface b of the carton A are A gap is created between the two. Next, the second and third pins 30 and 31 successively interfere with the inner side of the upper flap e to increase the gap between the top surface a and the bottom surface b, thereby increasing the seat height.
Hand it over to conveyor 3. Therefore, the subsequent opening operation can be carried out easily and reliably. Moreover, since the interference member 28 is configured to be movable, it can be applied to cartons of various shapes and sizes. In this embodiment, the interference member 28 is provided with three pins 29, 30, and 31 each, and this is intended to ensure that the carton can be opened without fear of damage by gradually and strongly interfering with the pins 29, 30, and 31. It goes without saying that even just one pin can create a gap between the top surface a and the bottom surface b of the carton. Further, the carton is not limited to one having a notch i in the flap, and if the flap on the top surface side protrudes further outward than the flap on the bottom side, it is of course possible to interfere with the overhang part. It is.

Reference numeral 16 designates a pair of separation guides disposed between the sheet conveyor 3 and the carton conveyor 10, and as shown in FIGS. The carton blank A is placed at a position where the carton blank A that has been removed and delivered to the sheet conveyor 3 is placed, and its downstream end extends above the carton conveyor 10. This separation guide 16 has an inclined section 16 that gradually rises from the vicinity of the connecting portion of both conveyors 3 and 10 toward the front in the traveling direction.
It has a. And these pair of guides 1
The interval 6 is set so that only the portion of the upper flap e of the carton A that protrudes to both sides than the lower flap f can rest on the guide 16.
Therefore, the carton blank A transferred onto the sheet conveyor 3 is transferred to the feed claw 9 with the ends of both upper flaps e resting on the separation guide 16.
In the process of transferring to the carton conveyor 10, the upper flap e is pushed up by the slope 16a, and the top surface a and bottom surface b of the carton blank A are further expanded to ensure opening of the carton. have it done.

Furthermore, as shown in FIG. 8, the carton conveyor 10 that opens cartons has a pair of endless chains 33 disposed on the inside and another pair of endless chains 34 disposed on the outside. , inner chain 33
It is composed of a rearward feed pawl 35 supported by an outer chain 34 and a forward feed pawl 36 supported by an outer chain 34. These feed claws 35 and 36 face each other, and their opposing surfaces have a shape that matches the side surface of the opened carton. That is, when applied to a rectangular cross-section carton, it has parallel surfaces as shown in the figure. This conveyor 10 is provided with a cam (not shown) near the sprocket 11 at the upstream end, and due to the action of this cam, the backward feed pawl 35 suddenly falls forward when it appears on the top surface of the conveyor 10. There is. Therefore, the carton blank A that is transferred to the sheet conveyor 3 and delivered between the feeding claws 35 and 36 of the carton conveyor 10 while being gradually expanded on the upper and lower surfaces a and b by the separation guide 16 is , while being supported from the front by the front feed pawl 36, is pressed from behind by the rear feed pawl 35, and is formed into a cylindrical shape. In this way, both feed claws 3
Separation guide 16 immediately before molding by 5, 36
By widening the upper and lower surfaces a and b, the carton can be opened easily and reliably.

In this embodiment, the case where the carton A has a rectangular cross section is described, but it goes without saying that the present invention can also be applied to the case where a carton having a polygonal cross section, such as a hexagon or octagon, which has been difficult to open in the past, is used.

Moreover, although the separation guides 16 are arranged parallel to each other, the lower surface of the guides 16 can be narrowed slightly toward the front in the direction of travel so that they fit between the upper and lower flaps e and f. The upper surface of the guide 16 pushes up the upper flap e while pressing the side flap f, and the upper and lower surfaces a and b of the carton can be forcibly expanded.

[Effects of the invention] As described above, according to the invention, only the upper flap of the blank is brought into engagement with the interference member during the transfer process of the blank that has been suctioned out from the carton holding member and delivered to the forming mechanism. Since the preliminary opening is performed by creating a gap between the upper and lower surfaces of the blank, the subsequent opening and forming operation can be made extremely easy and reliable.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the entire carton box forming device according to an embodiment of the present invention, Figs. 2 and 3 show a blank holding member and a take-out mechanism, Fig. 2 is a plan view, and Fig. 3 is a plan view. 4 is a side view showing the interference member, FIG. 5 is a side view showing the sheet conveyor and take-out mechanism, FIG. 6 is a perspective view showing an example of a carton blank, and FIG. 7 is a side view showing the separation guide. 8 shows a part of the carton conveyor, a is a plan view, b is a side view, FIG. 9 is a plan view, b is a side view, and FIG.
The figure is a simplified diagram showing the main parts of the device of this embodiment. A: carton blank, 1: blank holding member, 2: take-out mechanism, 10: forming mechanism, 28: interference member, e, h: upper flap, f, g: lower flap.

Claims (1)

[Scope of utility model registration request] Polygonal cross-section carton folded into sheets
It includes a blank holding member that stacks and holds a large number of blanks, a take-out mechanism that suctions the bottom surface of the stacked blanks and takes them out one by one, and a forming mechanism that forms the blanks delivered from the take-out mechanism into a cylindrical carton. In the carton box making device, the carton blank is fixedly installed in a transfer path of the carton blank which is suctioned out from the blank holding member by the take-out mechanism and delivered to the molding machine, and protrudes into the path and is folded into the sheet shape. A carton box manufacturing device comprising an interference member that interferes with an exposed portion of a flap located on the upper side exposed from the outer shape of the flap located on the lower side of a carton blank.