JPH1077006A - Method and apparatus for erecting a package container blank - Google Patents

Abstract

(57) [Problem] To be economical and require less spare parts because it is mechanically simple and does not require precise adjustment, and operates at a higher speed than conventional ones. Accordingly, there is provided an apparatus for erecting a flattened package container blank having a high capability. SOLUTION: A blank (3) is 1 from a magazine (4).
It is fed into the device (1) one by one, where
It is fed into the gap between 4) and the counter roller (22). Axial surface (15) of upright roller (14)
Are provided with a number of suction cups (16). These cups are activated when the blank (3) reaches the upright rollers (14) and the panel (8) is held against the surface (15). When the panel in front of the held panel (8) is released, the corners (10) of the blank (3) are opened because they are bent against the upright rollers. The open corner (10) is further opened to the carrier (24) of the transport chain (23). The blank (3) stands up and is surrounded by the carrier (24).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for erecting a flattened package container blank. The flattened package container blanks are sent one by one to an erecting device, and one of the panels is held. After being erected, the blank is carried out of the erecting device by the transport chain.

[0002] The invention also relates to an erecting device for erecting a flattened package container blank. The erecting device includes a blank supply device for feeding blanks one by one to the erecting device, and a transport chain designed to carry the erecting blanks out of the erecting device.
The erecting device holds the blank securely.

[0003]

BACKGROUND OF THE INVENTION Single-use packages, which are used only once, are commonly used today for packing liquid foods, such as milk and juice. This type of package is made from a package made of paper or cardboard as a core on which various thermoplastic layers, generally aluminum, are laminated. Some such single use single use packages are made from package container blanks. A package container blank is composed of sheets of a size suitable for making a quantity of package. The sheet has a fold line, a so-called fold, to facilitate forming the sheet into a finished package container. The sheet is further folded twice and glued so that the package container blank constitutes a capsule open at both ends. The packaging container blank is flattened and sent to a filling and packaging machine where it is raised.

[0004] Blanks for packaged containers are usually stacked in a magazine for the blanks in a filling machine from which they are fed one by one into a device for erecting the blanks and forming open capsules. The opened capsule is further conveyed to a mandrel wheel by a normal conveying chain. The mandrel wheel has a number of mandrels arranged to receive upright package container blanks, each of which has been sealed to form the bottom of the package. The bottom sealed package container blank is further conveyed, filled and top sealed to form a finished package for a gable top (gable top) package or a parallelepiped package container.

[0005] The most common method of erecting a flattened package container blank is to use two pivoting arms with a suction cup connected to a vacuum source. The arm secures the two sides of the package blank and the relative movement between the two pivot arms opens the flattened package blank.

[0006] Disadvantages inherent in existing devices for erecting flattened package container blanks include the need for careful adjustment and the complex mechanical components that need to be adjusted to the new volume size as the package volume changes. It is to be. An erecting device of this type is described in patent specification EP 42
No. 5,225 and SE422,661.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for erecting a flattened package container blank that is mechanically simple and does not require any precise adjustment to operate successfully. That is. The simplicity of the mechanical construction results in economics and requires less spare parts. Also, the stand-up device can be easily adapted to different package volumes.

It is another object of the present invention to provide an apparatus which operates faster than prior art apparatuses and methods, and thus can erect more package container blanks per unit time. is there.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for erecting a flattened package container blank of the type described in the introduction to the present invention, in which the holding device is provided with a suction cup on its surface. The upright roller is configured to hold the panel fixedly, and the package container blank is pushed into the gap between the upright roller and the counter roller, so as to follow the surface of the upright roller. This is achieved by the feature that the corners of the blank are opened by bending the panel along.

[0010] It is an object of the present invention to provide an apparatus for raising a flattened package container blank of the type described as an introduction to the description of the present invention, wherein the apparatus is arranged to fixedly support a panel of package container blanks and the surface thereof. Upright roller provided with a number of suction cups along, and a counter roller arranged so that the blank is pushed into the gap between the upright roller and the counter roller, Achieved.

[0011] The features of the preferred embodiment of the invention are further set forth in the appended claims.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show only those parts necessary for understanding the present invention, and a description of the mounting of a stand-up device to a filling machine, which is well known to those skilled in the art, is omitted.

FIGS. 1 and 2 show two parts of the device 1 according to the invention.
Fig. 4 shows aspects of types. The apparatus 1 includes a blank feeder 2 arranged such that flattened package container blanks 3 enter the apparatus 1 one by one. A magazine 4 in which a large number of blanks 3 are stored so that the flattened package container blanks 3 are sequentially fed into the apparatus 1.
Come out of.

The package container blank 3 has the appearance shown in FIG. 5 and has four sides or panels 5, 6, 7, 8 defined by a fold line or fold line 9.
Consists of a flattened capsule with Fold line 9
Thus, the package container blank 3 is easily formed on the package container. Panels 5, 6, 7, 8 constitute the sides of the finished package container. The package container blank 3 is fed into the apparatus 1 with the corners 10 or 11 first. The package container blank 3 constitutes a capsule whose both ends 12 and 13 are open.
The distance between them constitutes the height of the package container blank 3. This height depends on the volume that the finished package container will have.

The apparatus 1 further includes an upright roller 14, shown as a single piece in FIG. Standing roller 14
Has a large number of holes constituting a suction cup 16 on its surface 15 in the axial direction. The suction cup 16 is axially connected to a hole 17 provided in a radial surface 18 of the upright roller 14. All suction cups 16 and radial holes 17 are connected to a vacuum source (not shown). The suction cups 16 on the axial surface 15 of the upright roller 14 are distributed in a pattern forming a group. The axial suction cup 16 must cover the largest package container blank 3 height that the device 1 handles, ie the distance between the ends 12 and 13.

Further, the suction cup 16 in the peripheral direction of the upright roller 14 is used for the panel 5 of the package container blank 3,
6, 7, 8 widths must also be covered. The number of suction cups 16 in the circumferential direction corresponds to the number of holes 17 on the radial surface of the upright roller 14.

In FIG. 3, the suction cup 16 is 3 × 4
This pattern group is repeated three times over the axial surface 15 of the upright roller 14. The upright roller 14 shown in FIG. 1 has four such pattern groups 19, and the number of such groups is three in FIG. The number of pattern groups may vary between two and five, preferably three, but depends inter alia on the thickness of the packaging material. If the diameter of the upright roller 14 is small and the number of pattern groups 19 is small, the thin package material may be subjected to undesirable residual bending. If the diameter of the upright roller 14 is large and the number of the pattern groups 19 is large, the efficiency of the apparatus 1 is reduced.

On the radial surface 18 of the upright roller 14, an air deflector 20, which is shown in detail in FIG.
The air deflector 20 is provided on the radial surface 18 of the upright roller 14.
Surround tightly. The air deflector 20 is stationary, but the upright roller 14 rotates. The surface of the air deflector 20 is provided with a slot or groove 21 which forms a circumferential portion which is a part of a circle, the circumferential portion of which coincides with the position of the hole 17 on the radial surface 18 of the upright roller 14. Have been. The length of the groove 21 covers most of the holes 17 of the two pattern groups 19.

A counter roller 22 is disposed on the surface 15 of the upright roller 14. Although the direction of movement of the counter roller is opposite to the direction of movement of the upright roller 14,
Both rollers 14 and 22 operate at the same peripheral speed. The length of the counter roller 22 must be at least the same as the length of the upright roller 14. Surface 15 of upright roller 14
And the corresponding surface of the counter roller 22 are coated with rubber in order to handle the package container blank 3 softly.

The apparatus 1 further includes a transport chain 2 for carrying out the upright package container blank 3 from the apparatus 1.
3 inclusive. As shown in FIGS. 1 and 2, the transport chain may be composed of an endless conveyor belt or a chain on which a number of carriers 24 are provided.
Carriers 24, each receiving one package container blank 3, open towards the upright roller 14,
It is surrounded on three sides by the upright package container blank 3. The transport chain 23 is arranged to move tangentially to the upright roller 14.

As shown in FIG. 1, the flattened package container blank 3 is fed out of the magazine 4 by the feeder 2. The package container blank 3 is fed in such a way that its corners 10 first come out of the magazine 4. Blank 3 consists of upright roller 14 and counter roller 2
It is sent straight into the space between the two. Roller 1
The space between 4 and 22 is adjusted so that the package container blank 3 is securely held against the upright roller 14 without deformation. By coating one or both surfaces 15 of the rollers 14 and 22 with rubber, the package container blank 3 can be handled softly. Rollers 14 and 22 must be guaranteed to operate at the same peripheral speed. If the peripheral speed deviates, the package container blank 3 may be scratched.

The rear lower panel 8 is the upright roller 1
Upon reaching 4, the suction cup pattern 19 located in alignment with the panel 8 is activated. The suction cups 16 of the pattern 19 should all be covered by the panel 8. The suction cup pattern 19 is formed by a groove 21 of the air deflector 20.
Operate by exposing the holes 17 of the associated pattern group 19. In such a case, the panel 8 is held and bent toward the surface 15 of the upright roller 14.

The panel 7 located in front of the panel 8 is free and is not held against the surface 15 of the upright roller 14, so that the upright roller 14
, The corner 10 is opened because it is folded around the upright roller 14. The smaller the diameter of the upright roller, the greater the opening action by the bending action, but it must not be so small that residual bending remains in the upright package container blank 3. Conversely, the upright roller 1
If the diameter of 4 is too large, the fold of panel 8 will be too small to open corner 10 sufficiently to raise the packaging container blank. Experiments have shown that a diameter surrounding two to five pattern groups is appropriate.

As the erecting roller 14 moves, the open corner 10 becomes the side 25 of the carrier 24 of the transport chain 23.
Collide with At this time, the movement of the corner 10 is stopped, and the package container blank 3 completely stands up in the carrier 24. The groove 21 of the air deflector 20 is provided so that when the hole 17 is tangential to the direction of movement of the transport chain 23, it is covered again and deactivated.
Next, the completely upright container blank 3 is placed on the upright roller 1.
4 is opened from the surface, and three sides are surrounded by the carrier 24. When the blank 3 rises in the carrier 24, the panel 8 is held in a folded state, so that the package container blank 3 is not folded twice, that is, the blank 3 is folded into a newly flattened state. Never.

The distance between the carriers 24 is
Transport chain is less than the distance between the two package container blanks 3 (actually 15% to 40% shorter) on the surface 15 of 40% slower).

Blanks 3 for package containers of various volumes
The device 1 is also easily adjustable when standing up, and for small volumes where the height of the blank is low, one or more rows of suction cups 16 along the circumference of the upright roller 14.
Is closed, and all the suction cups 16 of the pattern 19 are always completely covered by one panel 8.

As is apparent from the above description, the present invention raises a flattened package container blank 3 which has a simple mechanical structure and is easily adjustable for various package volumes. A method and an apparatus therefor are provided. Apparatus 1 does not require any adjustment, and experiments show that the apparatus is reliable and stable in operation.

The present invention should not be considered as limited to those described above and shown in the drawings, and various modifications may be made without departing from the spirit and scope of the appended claims.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a view showing an upright roller according to the present invention.

FIG. 4 shows an air deflector for an upright roller according to the present invention.

FIG. 5 is a view showing a flattened package container blank to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blank upright device 2 Feeding device 3 Blank 5, 6, 7, 8 Panel 10, 11 Corner 14 Upright roller 15 Axial surface 16 Suction cup 17 Radial hole 18 Radial surface 19 Pattern group 20 Air deflector 22 Counter roller 23 transport chain 24 carrier

Claims (7)

[Claims] 1. A flattened package container blank (3) comprising one (8) of the panels of said blank (3).
Flattened package container blanks which are fed one by one into a device (1) for fixing and holding the blanks, and after the blanks (3) have been erected, are carried out of the device (1) by a transport chain (23). In the method of erecting (3), the holding device (1) includes a suction cup (1).
6) comprising an upright roller (14) for fixing and holding the panel (8) on the surface thereof, wherein the package container blank (3) is placed in the gap between the upright roller (14) and the counter roller (22). The panel (8) is made to follow the surface (15) of the upright roller (14) by being pushed into the
Blank (3) by being folded along 5)
Opening the corners (10) of the flattened package container blank. 2. An apparatus (1) for erecting a flattened package container blank (3), wherein the blanks (3) are fed one by one into the apparatus (1) for fixedly holding the blanks (3). An apparatus comprising a device (2) and a transport chain (23) arranged to carry out a package container blank (3) standing up from said device (1), one of the panels of the package container blank (3).
The surface (15) arranged to hold the individual (8)
Upright roller (14) provided with a number of suction cups (16) along with the blank (3).
A flattened package container blank (3), characterized in that it comprises a counter roller (22) arranged to be pushed into the gap between the flattened package container blank (3). 3. The suction cup (16) is arranged in a number of patterns (19) on the surface (15) of the upright roller (14), each pattern being the one panel (8).
3. The device according to claim 2, wherein the device corresponds to the surface of (1). 4. A surface (15) of said upright roller (14).
Device according to claim 3, characterized in that the number of upper patterns (19) is between 2 and 5. 5. The apparatus according to claim 2, wherein the upright roller and the counter roller are arranged to move at the same peripheral speed. 6. A suction cup (16) interconnected axially and connected to a vacuum source via a hole (17) in one radial surface (18) of the upright roller (14). 3. The device according to claim 2, wherein 7. An axial row of suction cups (16) comprising:
Device according to claim 6, characterized in that it is actuated by an air deflector located at the end of an upright roller (14) provided with a hole (17).