JPS6023101A - Packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming a bag from a rolled band and filling the bag with desired contents. The invention is particularly suitable for packaging granular or powdered substances such as coffee, flour, etc. in sheets formed from flexible materials.

A device for forming and filling bags made of flexible material is known from French Patent No. 1,281,258.

In this conventional apparatus, a bag is formed by winding a sheet material, for example paper, onto a packaging core attached to a rotating shaft or a turret. Each sheet of material is fed to a packaging core that is horizontally arranged on a rotating shaft. On this occasion,
The horizontal arrangement of bags formed from flexible sheet material or curved film makes the bags more likely to lose their shape, which in turn reduces the reliability and productivity of the device. Furthermore, since the bag is formed horizontally, a significant drawback arises in that it must be erected in a vertical position in order to be sent to the subsequent filling process. Furthermore, in this device, the device must be stopped in order to remove the bag from the packaging core and transfer it to the holding frame. Such periodic stoppages not only reduce the productivity of the equipment but also result in significant power penalties. Furthermore, since the bag is made of a flexible material that easily loses its shape, it is particularly difficult to transport an empty bag by raising it from a horizontal position to a vertical position.

It is an object of the invention to provide a device for forming bags from rolled strips.

It is also an object of the present invention to provide an apparatus for forming a bag by wrapping or folding sheet material into a vertically arranged packaging core of a predetermined shape corresponding to the shape of the intended bag. be. Furthermore, another object of the present invention is to
To provide a bag forming device in which a packaging core is provided with a means for extracting the bag during movement. Furthermore,
Another object of the present invention is to provide a bag forming apparatus which extracts bags in a vertical position and therefore does not require changing the orientation of a single bag when sending it to a subsequent filling process.

According to the present invention, the above object is achieved by configuring the belt-shaped sheet material to be pulled out vertically downward and guided parallel to the side surface of the packaging core. Furthermore, in accordance with the invention, a number of vertical wrapping cores are arranged in an annular manner so that they can successively oppose the free ends of the strips that have been pulled out of the rolls and are suspended under their own gravity. These packaging cores are sequentially arranged in parallel and close to the free end of the strip.

Therefore, the flexible strip can be mounted on the vertical packaging core without shifting from the correct planar arrangement for forming the bag.

In a device according to a preferred embodiment of the invention, the strip of flexible material is cut into individual sheet pieces after its ends have been fixed on a vertical packaging core.

In an apparatus according to another preferred embodiment of the invention,
The formed bag is pulled out from the packaging core by a detachment device provided inside the packaging core. In this case, the device according to the invention can perform the bag removal operation with high reliability without stopping the device while the packaging core is moving. Furthermore, a feature of the device according to the present invention is that it is equipped with a mechanism for transferring the formed empty bag to a holding frame, and in this case, this holding frame is arranged coaxially with the packaging core, and the The reason is that it is configured so that it can move in sync with the body.

The present invention provides an apparatus for forming bags from rolled strips. This device is characterized in that, in the initial stage of the cycle process, the strip is guided vertically downward and placed parallel to and close to the side surface of the packaging core.

The free end of the strip pulled out from the roll has a flatness suitable for attachment to the core and is parallel to and close to the side surface of the packaging core due to tension in the longitudinal direction due to the action of gravity due to its own weight. This makes it possible to arrange them as follows.

- In the device according to the invention, a cutting mechanism may be provided such that the vertically downwardly directed strip is cut into individual sheet pieces only after its ends have been firmly fixed on the packaging core. It's advantageous. Thereby, each sheet piece obtained by cutting the strip pulled out from the roll is conveyed to the final bag forming area without damaging the vertical arrangement.

Furthermore, it is advantageous for the packaging core to be arranged parallel to and close to the vertical sheet strips (at least in the position of mounting the sheet strips onto the core), so that during mounting, the core can be arranged parallel to and close to the hanging direction of the strip, and each cut piece of the strip can be appropriately fixed on the core.

Furthermore, it is desirable that the bag formed by winding the bag onto the core body is held in a vertically erect state with its opening facing upward. This arrangement allows gravity filling of the contents.

Furthermore, it is desirable that the packaging core is provided with a detachment device for removing the bag from the core during its movement. This detachment device has a movable plate and detaches the bag from the core by applying an axial force to the bottom surface of the bag. This detachment device preferably has a bushing rod, the actuation of which causes the bag to be removed from the packaging core during its movement. A movable plate of each vertical packaging core is attached to this bushing rod and moves in the axial direction of the bushing rod.

In the apparatus of the present invention, a bag formed by winding on the surface of a vertical packaging core is transferred into a number of holding frames disposed below by a movable plate and bushing rod provided on the core. It is advantageous to be configured as follows. These holding frames are arranged coaxially with the packaging core disposed above at least in the transport area of the bag, and move in synchronization therewith. The bag is extracted during the movement of the packaging core and placed in a lower holding frame which moves synchronously within this extraction area.

More preferably, the plurality of vertically arranged packaging cores move in an annular or annular trajectory, and the holding frame arranged below also performs a synchronous annular or annular movement. In this case as well, the bag is conveyed through a synchronous conveyance area where the packaging core and holding frame move coaxially and synchronously with each other, and after being extracted from the packaging core within this area, it is transferred into the holding frame. .

The present invention significantly increases the reliability of the device, as well as improves operability and productivity. Furthermore, the packaging device according to the invention provides maximum safety and operational precision.

The apparatus according to the invention forms a bag from a flexible rolled strip and, if necessary, fills, weighs, adjusts (inspects) and seals it under vacuum and in a continuous process. conduct. Suitable filling materials include granular or powdered materials such as wheat flour, sugar, and coffee. Furthermore, the front side of the device can be equipped with a number of devices, such as extrusion devices for printing or applying textured patterns, and for providing heat-sealable inner and outer layers.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the ends of the strip l made of flexible material are vertical;
It shows how it moves downward. This strip is supplied from a strip winding roll or an extrusion molding machine (not shown). The feed roller 2 guides the strip 1 downward.

That is, the band-shaped body 1 is.

It is transported in the vertical direction indicated by the arrow.

FIG. 2 shows the free end 1 of the strip 1 pulled out from the roll.
′ hangs down in the vertical direction due to its own weight and is arranged parallel to and perpendicular to the surface of the packaging core 3.

In FIG. 3, the free end 1 of the vertically suspended strip l
' is fixed on the packaging core 3 by, for example, a presser plate 4. Since the strip 1 is arranged close to and parallel to the core 3, the strip 1 maintains its vertical state during this fixing operation.

In FIG. 4, the strip 1 is fixed onto a packaging core 3 and then cut into sheet pieces 5 by known means (not shown). As is clear from the figure, the cut sheet piece 5
is vertically and steadily fixed on the packaging core 3. This vertical holding/fixing arrangement is maintained during the subsequent folding process onto the core. Further, the upper edge 6 of the cut sheet piece 5 is cut horizontally so that the periphery of the upper open end becomes horizontal when formed into a bag.

In FIG. 5 it is shown that the upper edge 6 of the cut sheet piece 5 is always held horizontally during the subsequent process, ie, during folding into the circumference of the vertical packaging core. As shown in FIG. 5, a large number of the above-mentioned vertical packaging cores 3 are arranged in an annular manner, and each of them can move up and down, for example, along an annular path of a horizontal rotational trajectory (not shown). It is suspended vertically and rotates. As a mechanism for cutting, bending and joining the cutting sheet 1-piece 5 to form the bag body 5', any conventionally known mechanism can be employed.

FIG. 6 shows that a detachment device 7 for extracting the formed bag 5' is arranged coaxially inside the packaging core 3. This extraction operation is performed while the core body 3 is rotating in the horizontal direction. This detachment device 7 includes a rod 9 through which the core body 3 is inserted, and a movable plate provided at the lower end of the rod 9. A roller 10 is attached to the upper end of the rod 9.

The roller 10 engages with a groove track 11 formed on the outer peripheral surface of the fixed drum body 12. As the core body 3 rotates, this roller 10 moves while being guided along the groove 11,
As a result, the rod 9 moves up and down in the axial direction, and the movable plate at the lower end pushes down the inner bottom of the bag 5', and then returns to its home position. The rotary track is arranged on a number of chain-driven holding frames 8. The holding material 8 is provided so as to be able to cooperate with the packaging core 3 disposed above in the extraction area of the bag 5', and is attached to the core 3 in order to accommodate each bag 5' extracted from the core 3. move at a speed synchronized with the

In this configuration, the bag 5' is extracted and transported during the synchronous movement of the core 3 and the holding frame 8, and there is no need to stop the apparatus.

FIG. 7 shows the configuration of a rotating orbit that holds the packaging core 3. FIG. This annular orbit coincides with the movement path of the holding frame 8, which moves in cooperation and synchronization with the core body 3, in an arcuate portion. Inside the holding frame 8, a bag 5' vertically arranged with its open mouth facing three directions is housed, and is transported to the subsequent filling process and other processes.

FIG. 8 shows a large number of holding frames 8 that move in synchronization with the core body 3.
Another example regarding the annular arrangement of is shown.

Here, similarly, the packaging core 3 is suspended above the holding frame 8 and moves on an annular track having the same shape.

FIG. 9 shows another embodiment of the cooperative and synchronized annular orbits of the holding frame 8 and the packaging core 3. In Figure 9,
A pair of packaging cores 3 and holding frames 8 adjoin a further circularly arranged group of holding frames 8' on the outside. In this case, the empty bag 5' is transferred from the holding frame 8 to the outer holding frame 8' in a vertical arrangement with the open mouth facing three directions using a known conveyance device.
and sent to the subsequent filling and sealing process.

Similar to FIG. 9, FIG. 10 shows a state in which a pair of packaging core 3 and holding frame 8 are adjacent to another group of holding frames 8' arranged in an annular shape on the outside. In this case, the annular orbit of the outer holding frame group has an elliptical shape. These holding frame groups 8' stand up vertically, store and hold empty bags 5' with the opening 1'' facing one side, and transport them to the next filling and sealing process.

Other combinations of different geometries, modes of movement and modes of synchronization are possible within the scope of the inventive subject matter. Additionally, size ratios, structure, and materials are influenced by process speed and the physics of the contents.
Various selections can be made according to chemical properties. Furthermore, the present invention encompasses all apparatuses having the essential features of the present invention, that is, all bag manufacturing apparatuses that form bags by vertically guiding the free end of a rolled strip of flexible material. be done. Furthermore, all backing devices having a plurality of vertical wrapping cores arranged in an annular manner and capable of arranging vertically suspended strip ends parallel to and adjacent to the cores are encompassed by the invention. Ru. This backing device is capable of fixing the end of the strip onto the core without interfering with the vertical arrangement of the end of the strip that hangs down due to its own weight. Furthermore, the invention encompasses all backing devices having a vertical packaging core with an internal release device for removing the bags. The detachment device is installed directly inside the packaging core and can remove the bag during movement of the core by applying pressure to the inner bottom surface of the bag formed on the core. The packaging core is supported on a circular rotating shaft device and moves in cooperation and synchronization with a number of holding frames arranged below the core. The bag formed on the core is transferred into the holding frame during movement of the core.

Further, the present invention provides a method of forming a bag body with an opening opening on three sides by wrapping vertical sheet pieces around a large number of vertical packaging core bodies, and disposing the bag body under the core body. It encompasses all devices that can be moved during movement within a large number of holding frames that move synchronously.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the feeding mechanism of the strip in the packaging apparatus of the present invention, FIGS. 2 to 4 are explanatory diagrams showing the process of creating sheet pieces from the strip, and FIG. FIG. 6 is an explanatory diagram showing the process of removing the bag and storing it in the holding frame. FIG. 7 is an explanatory diagram showing the process of removing the bag and storing it in the holding frame. FIGS. 8 to 10 are explanatory diagrams showing the steps of sealing and recovering the product. FIGS. 8 to 10 are explanatory diagrams showing other embodiments of FIG. 7. In the figure ■...Band-shaped body, 1'...Free end of the band-shaped body, 2...
・Feed roller, 3...Packaging core 4...Press plate, 5...Bag body, 5'...Bag body 6...Top edge, 7
...Movable plate, 8.8'...Holding frame, 9...
・Rod, 10...Roller, 11...Guide groove,
12...Stationary cylinder patent applicant I.C.A. Nis.P.A. representative patent attorney Toshiaki Ikeura No. 114 No. 914 Fig. 10

Claims (9)

[Claims] (1) In an apparatus for forming a bag from a strip wound on a reel and filling it with the desired contents, the strip is oriented vertically downward and parallel to the side surface of the packaging core. A device characterized in that it is guided. (2) The free end of the flat strip drawn from the reel is
Claim 1, characterized in that it is oriented vertically by gravity and is guided in a stable state upon installation on a packaging core, in a plane, parallel to and close to the sides of said core. Section equipment. (3) The vertically downwardly facing planar end of the strip is cut after it is stably fixed on the packaging core, and the cut is thus formed from the flexible strip pulled out from the reel. 3. Apparatus according to claim 1 or 2, characterized in that the pieces can be conveyed to adjacent bag-forming areas without the vertical mounting being displaced from position. (4) The packaging cores are arranged in a vertical direction and move along a predetermined conveyance path, and at least in the bag attachment and removal area of the conveyance path, each packaging core is
With respect to the vertical plane where the end of the strip hangs due to gravity,
An apparatus according to any one of claims 1 to 3, characterized in that the parallelism of the cutting seams 1 to 1 is maintained without impairing the steady perpendicularity thereof. (5) A bag formed by winding around a packaging core. 5. The device according to any one of claims 1 to 4, wherein the device is arranged vertically with the opening facing upward so that the predetermined contents can be filled by gravity. (6) The packaging core is moved from the moving packaging core by applying an axial force from the inside to the bottom of the bag.
The device according to any one of claims 1 to 5, characterized in that it is provided with a detachment device having a movable plate for extracting the bag. (7) The bag body is extracted from the packaging core during the movement of the packaging core by means of a bushing rod, said pushrod performing a coaxial movement to apply an acting force to a movable plate of the packaging core by a known operation. An apparatus according to any one of claims 1 to 6. (8) The bag formed by winding around a vertical packaging core is transferred to a number of holding frames disposed below by a bushing rod that applies an acting force to a movable plate of the core, and the holding frames are , at least in the transport area of the bag, the bag is arranged coaxially with the core body and moves in synchronization with the movement of the core body provided above, and the bag body is extracted from the core body during these synchronous movements. An apparatus according to any one of claims 1 to 7, characterized in that: (9) A large number of vertical packaging cores move in a circular or ring-shaped conveyance path that is associated with a circular or ring-shaped conveyance path of a large number of holding frames that move in cooperation and synchronization therewith, and the bag body is In the synchronous movement area, each packaging core and the holding frame are arranged coaxially with each other, and the bag is removed from the core and simultaneously transferred into the holding frame during their movement. 9. The device according to claim 1, wherein the device is housed in a vertical position.