KR20140037857A - Method for packaging products and packaging units for carrying out the method - Google Patents

Abstract

The present invention relates to a method for packaging a product, in particular a hygiene product, in a packaging bag, in which the product is inserted and wrapped in an individual packaging bag and then sidewalls. The end face 34 of the packaging bag is folded and welded by folding the end flaps 48 formed on the end faces respectively by 40, in which case the packaging bag 27 is its end face. In order to weld 34, it passes through the welding station 36 in the feed direction, which must be guaranteed with a particularly high throughput and production rate and thus a high reliability with a high reliability. For this purpose, according to the present invention, when the end face 34 is folded, the folding cam 54 passes through the packaging bag 27 in the conveying direction, so that the conveying direction of the packaging bag 27 is passed. In view, the rear end flap 48 is folded up at a higher speed compared to the conveying speed of the packaging bag 27.

Description

Method for packing products and packaging device for carrying out the method {METHOD FOR PACKAGING PRODUCTS AND PACKAGING UNITS FOR CARRYING OUT THE METHOD}

The present invention relates to a method for packaging a product, in particular a hygiene product, in a packaging bag, in which the product is enclosed in an individual packaging bag and then formed on the end face respectively by side walls. By folding up the end flap, the end face of the packaging bag is welded after being folded, in which case the packaging bag is passed through the welding station in the feed direction to weld its end face. The invention also relates to a packaging device for packaging a product in a packaging bag, in particular for carrying out the method according to the invention.

Hygiene products such as, for example, paper handkerchiefs, panty liners, sanitary napkins, diapers, etc., are typically packaged in film individually or in predetermined amounts, for example in the form of five or ten packs, It is packaged and provided ready for consumption or use. The film surrounding the hygiene product or stack of hygiene products then forms a so-called packaging bag, which, among other things, for example a perforation to facilitate opening and / or an adhesive clip for closing again. And the like can be provided. Likewise, such packaging bags may be provided in the form of a covering box for other products or product inputs, such as for example tobacco packaging.

In order to enclose a product, in particular a hygiene product or a stack of hygiene products in a packaging bag, a suitable cut film section may be provided, for example for the purpose of forming a packaging bag, in which the product is inserted and wrapped In which case the film is then covered around the product and welded at the edge. Such a concept for packaging hygiene products in packaging bags is known, for example, from DE 101 48 283 A1, which is provided with a so-called feed tray for its own packaging step. . In this publication a film provided for the purpose of forming a packaging bag is first inserted into one chamber of the feed tray and rolled up, in which case a stack of hygiene products is likewise inserted into the chamber of the feed tray and wrapped. The lateral edges of the film are then superimposed so as to surround the stack around the sanitary product and welded together appropriately.

Alternatively, so-called film tube-packers, for example as known from DE 10 2008 020 800 A1, can also be used. In this type of system, the hygiene product or stack of hygiene products to be packaged is placed into a film tube in a so-called tube bag machine, and then the film tubes are welded together and separated between the products.

Nonetheless, high packaging rates and throughput rates are desirable when packaging products, particularly for packaging hygiene products, such as paper handkerchiefs, panty liners, sanitary napkins, which are manufactured in large quantities. For this reason, the packaging system is usually designed in the form of a circulation system. In such a circulation system, the product to be packaged is continuously conveyed along the conveying direction continuously, individually or in a stacked manner, and is surrounded by the packaging bag while circulating various system elements arranged along the conveying direction. However, in the case of known systems, that is to say, for example, when the hygiene product is inserted and wrapped in a suitable precut film section based on the feed tray, for example as described above, or in the case of the film tube system described above, When folding and welding the lateral areas of the bag, the system must endure for a short period of time, in which case the continuous transport of the product is temporarily interrupted.

This short-term interruption of the continuous transfer process, which is particularly necessary for the welding step, hereby undesirably lowers the processing and production rates of the system. In this case, in order to avoid system outages as broadly as possible and to enable particularly high throughputs, systems as described, for example, in DE 10 2010 046 561.5, which have not been published in advance, are approached from the side for welding. access) and this side approach allows the implementation of individual welding steps during the circulation operation. This lateral approach can be used particularly advantageous when the product is provided to the corresponding welding station with the product being particularly well pretreated, in particular with the end face of the packaging bag already pre-folded.

The object of the present invention is the above-mentioned type, which can achieve particularly high throughput and production rates by pretreatment of the product, especially as needed, for end face welding, thereby ensuring a particularly high production rate with high reliability. Is to suggest how to pack your products. In addition, a packaging device particularly suitable for carrying out the method must also be provided.

The object of the present invention related to the method is that a folding cam passes through the packaging bag when folding the end face so that the end flap at the rear when viewed in the transport direction of the packaging bag is forward from the rear when viewed in the transport direction. It is solved by being folded up.

The present invention starts from the idea that efforts must be made to cycle the product or product stack as continuously and uninterrupted as possible through the packaging system in order to achieve particularly high throughput and production rates. To ensure the widest possible range of system downtime or even short-term interruptions in the continuous transport of a product or product stack, the entire processing steps when the product or product stack is wrapped in a separate packaging bag can be avoided. Must be designed consistently. In order to ensure the same consistent circulation behavior in the welding stages where the overlapping edge sections are welded to each other in the edge region of the individual packaging bag, the welding stages and preliminary processing steps made before it also have to be It must be designed consistently for the approach of. For this purpose, individual welding mirrors, which guarantee the necessary heat introduction into the film material, which in turn leads to mutual welding of the overlapping film parts, are arranged obliquely with respect to the conveying direction of the product or product stack, respectively. As a result, the product or product stack is able to penetrate between the welding mirror and the heating element, respectively, in the transport direction.

In the step of folding the end face, which precedes the step of welding the end face, a rear end flap, especially in the transport direction, can be problematic for such a circulating operation in which the system is not stationary. A folding cam was provided to appropriately fold the end flap, the folding cam passing through the packaging bag at an excess speed from the rear to the front in the form of a “overtapping folding cam” while simultaneously passing the rear end flap. Move forward.

In a particularly preferred refinement, the motion- or velocity profile of the "overtaking" folding cam relative to the individual wrap bag or to the rear end flap of the bag is designed for a particularly efficient folding process. For this purpose a "irregular" movement of the folding cam is preferably provided, in which case the relative speed of the folding cam is set based on the conveying speed of the packaging bag, while the movement of the folding cam passing through the packaging bag It is set depending on the position of the folding cam relative to the rear end flap. Thus, a relatively long contact step or -time can be set, in particular during a passing process in which the folding cam passes through the end flap to be folded up, and in such a relatively long contacting step or -time the folding cam contacts the end flap. The end flaps are guided and fixed at the side, while the folding cam is approached from the rear to the end flap on which it is to be folded or moved in a direction away from the end flap after the folding process. Can be.

In order to make this situation particularly effective, it is preferable to first fold up the rear end flap before the relatively less excess speed of the folding cam is established relative to the conveying speed of the packaging bag in the subsequent contact- or fixing step. In the travel- or approach phase, the folding cam approaches the rear end flap from the rear and overlaps with the rear end flap at a relatively large excess speed compared to the conveying speed of the packaging bag. This velocity profile allows for the folding of the end flaps, especially in unbroken materials, more specifically in the absence of the preceding procedure of inserting and enclosing the so-called previously broken or folding over edges into the material. To reliably be implemented, side guides and stabilization of the folded up end flaps can be made.

Preferably, when folding the end face, the packaging bag passes through the fixedly supported folding cam so that the front end flap is folded up in the transport direction of the packaging bag. In this case, the front end flap collides with the fixedly supported folding cam by the continuous conveyance of the packaging bag, which must be performed in any case, and as a result, the folding cam is automatically moved toward the end face due to the continuous conveying operation. The end folding process can then be made particularly reliably by combination with the speed profile of the overtaking folding cam, which is preferably provided, since the front end flap is likewise folded up and then fixed during a relatively long lasting contact step. This is because the overtaking folding cam can guide and secure the rear end flap from the side until the supported front folding cam can continually ensure the fixation of the rear end flap in the form of a transition.

Particularly high throughput can be achieved in a further preferred embodiment by allowing both end faces of the packaging bag to be processed jointly, that is to say in particular in one common processing step. For this purpose the packaging system is preferably suitably symmetrically designed so that, even when the end faces are folded, the individual end flaps of both end faces are folded up simultaneously.

In a so-called film tube packer, the product to be packaged is inserted and wrapped into a bag film tube, and then the bag film tube passes through a first welding station, in which the bag film is subjected to a second welding step. The side is welded in the first step before the end face of the tube is welded. In this case, in order to enable lateral access which favors the throughput for two consistent welding steps, the packaging bag provided with the product is preferably relative to the conveying direction after welding the longitudinal side and before folding the end face. It will rotate by an angle of rotation corresponding to the angle formed by the two product sides which collide with each other. The welding process is thus carried out in two stages. In this case, in the first welding step, the open longitudinal side of the packaging bag can be welded first by the approach from the side. The product or product stack then inserted into the bag film tube is then rotated relative to the conveying direction, at which point the side of the product that has not yet been welded is rotated relative to the conveying direction and then aligned to the side. . Thus, in the subsequent second machining step, the folding of the end face and the subsequent welding can also be carried out from the side.

Rotation must be made to correspond to the bottom shape or floor area of the product or product stack. For example, in this application the product may have a generally triangular bottom shape, with the result that the rotation can be about the angle of the triangle. Rotation angles of 90 ° are preferably selected for products with a generally rectangular bottom area, for example cigarette cases, handkerchiefs and the like. In this case, the rotation may be performed by rotating the product in a state in which the conveying direction is maintained, or may be rotated by appropriately changing the conveying direction in a state in which the orientation of the product is maintained.

The problem of the invention relating to a packaging device for packaging a hygiene product in a packaging bag is solved by a folding station which is provided for folding the end face and which is arranged in a conveying system for the packaging bag, the folding station being connected to the support element. And a folding cam that is disposed and capable of passing through the packaging bag from the rear to the front when viewed in the conveying direction.

In order to be able to form the desired movement-or speed profile of the overturning folding cam relatively suitably with respect to the individual packaging bags, in the preferred embodiment the folding station is assigned a control unit for adjusting the movement speed of the folding cam. have. The control unit is then preferably designed to set the movement speed of the folding cam relative to the individual packaging bags depending on the position of the folding cam. In a particularly preferred embodiment in this case, the control unit is configured such that a relatively large excess speed of the folding cam is set relative to the conveying speed of the packaging bag while the folding cam approaches the end flap while the folding cam reaches the end flap When overlaid with the end flap, a relatively less excess speed or even temporarily a stationary state of the folding cam, i. E. A balanced speed, is set for the bag. The process of adjusting the speed of the folding cam to a position relative to the packaging bag can be done by detecting the position signal for the individual packaging bag and by considering the signal in the form of active regulation in the control unit. However, to keep the device cost particularly low, it is desirable to provide the clock operation of the packaging device as a whole and the triggering of the folding cam in dependence on the system clock.

In an alternative or additional preferred embodiment the folding station also comprises a further supported folding cam which is fixedly supported, the further folding cam in front of the packaging bag, in particular in the conveying direction of the packaging bag by passing through the packaging bag. It was provided for the purpose of folding.

In a further preferred embodiment the folding station is designed to simultaneously process both end faces of the packaging bag. For this purpose the folding station preferably comprises one additional folding cam each capable of passing through and / or fixedly supported by the packaging bag from the rear to the front when viewed in the transport direction for each end face.

Structurally, the support element for the movable folding cam can be embodied, for example, as a link chain provided with a cogwheel gear or as a turntable. However, in order to be particularly advantageous in favor of the preferred process of folding both end faces of the packaging bag simultaneously and in parallel, the support element for the overtaking folding cam is preferably formed as a folding wheel which can rotate about a horizontal axis of rotation. Preferably in this case two folding wheels with correspondingly installed folding cams, one for each of the end faces of the packaging bag, can be installed on the common axis of rotation.

Forming the support element as a folding wheel with a horizontal axis of rotation and a correspondingly vertical wheel plane also makes it possible to form the folding cam with a single face in its area of contact with the end flap. Preferably the contact surface for the end flap produced by this formation is designed for a particularly stable and reliable side guide of the folded up end flap in its geometric structure and dimensional design. For this purpose the support element is preferably provided with a small number of folding cams, each of which has one contact surface for the end flap to be folded up, wherein the contact surface has at least half of the area of the individual end flap. Has a size.

In order to enable lateral access to promote throughput for the entire processing steps, the packaging device preferably comprises a conveying system through which the sanitary product to be packaged is first provided from the insertion station to the first welding station. And may then be provided to the second welding station from the first welding station. In this case particularly preferably between the first welding station and the folding station in the transport direction of the hygiene product, the packaging bag provided with the hygiene product is rotated by a predetermined rotational angle relative to the transport direction, preferably by 90 °. A reversing unit is provided for the purpose.

Preferably the packaging device also has a separate separating unit for the packaging bag, which is arranged behind the first welding station in the transport direction.

The advantage achieved by the present invention is that the folding of the end face can be achieved in a relatively simple and reliable manner, especially with respect to the rear end flap, by means of side access and without system standstill, by using an overtaking folding cam. will be.

Embodiments of the present invention are described in detail below with reference to the drawings:
1 is a schematic view showing a packaging device for packaging a hygiene product,
2 is a schematic diagram showing a packaging bag holding a product stack just before folding the end face,
3 is a schematic view of the packaging bag according to FIG. 2 after folding the end face;
4 is a schematic view showing a folding station of the packaging device according to FIG. 1,
5 is a sequence (FIGS. 5A-5N) to clearly show the progress of the motion of the overtapping folding cam, and
6 is a distance-time-diagram.

In all figures, the same members are provided with the same reference numerals.

A packaging device 1 according to FIG. 1 has been provided for packaging hygiene products in packaging bags. In the present embodiment, the paper handkerchief as a hygiene product is inserted and wrapped in a charging manner, more specifically as a stack of individual handkerchiefs, each inserted into one packaging bag, each with ten charging sizes. Alternatively, however, other sizes are possible, for example it is also possible to pack three or five paper handkerchiefs in one packaging bag or other hygiene products such as, for example, panty liners, sanitary napkins or the like may be provided.

The packaging device 1 of the present application is embodied as a so-called film tube-packer, in which case the paper handkerchief to be wrapped is first inserted into the bag film tube 4 and wrapped in a charging- or stacking manner. For this purpose the packaging device 1 comprises a feeding unit 8, through which the paper handkerchief is conveyed in the form of a product stack 6 comprising a paper handkerchief each of which is stacked 10 pieces. Supplied to. In the present embodiment, the supply unit 8 is implemented with two tracks, that is to say that the product stack 6 is fed to the conveying system 12 in parallel with each other in a form in which the two supply rails 14 are arranged in parallel. . This two track arrangement allows for the guiding of multiple conveying strands together, in particular for jointly further machining the product stack 6. Thereby, when packaging and further processing the product stack 6-compared to the provision rate of the product stack 6 when manufacturing the product stack 6-it is possible to reach twice the throughput. do.

The conveying system 12 is assigned, among other things, an insertion station 16 and a bag film provided for the purpose of forming a packaging bag inside a suitable film reservoir formed in the form of a roller or the like, for example. 10) is reserved. In the insertion station 16 a suitably formed mold shoe 18 is provided, through which the back film 10 is conveyed along the conveying system 12. The paper handkerchief is inserted and wrapped into the film. The mold shoe 18 is here formed so as to completely surround the product stack 6 through which the supplied film is circulated, in which case the corresponding edge regions of the film overlap one another at the longitudinal edges of the resulting back film tube 4. The situation is set.

Insertion station 16 is provided herein with suitable means for spatially synchronizing product stack 6 with back film 10. In this case, in particular, the product stack 6 can be positioned relatively accurately with respect to the back film 10, so that the position of the product stack 6 is relative to the compressive force applied on the back film 10. And / or meet the additional conditions provided relative to the holes formed in the back film. Thereby, the access opening inside the packaging bag formed by the hole in the bag film 10 is also suitably positioned relative to the product stack 6 inserted and wrapped in the packaging bag.

Via the conveying system 12, the sanitary product to be packaged can be supplied from the insertion station 16 to the first welding station 20 disposed behind together with the bag film 10 surrounding the sanitary product. The first welding station 20 then comprises a heating device 22 suitably designed in an obliquely arranged state, in particular formed as a welding mirror, through which the film tube 4 is sufficient for welding. Can be heated to a high temperature. The overlapping edge regions of the film are welded to each other by heating, resulting in a unique film tube 4 within the first welding station 20. The film tube 4 thereby forms a continuous casing process of a plurality of continuous paper handkerchief product stacks 6.

The arrow 24 indicates the conveying direction of the paper handkerchief product stack 6 conveyed on the conveying system 12. In the conveying direction, a separate separation unit 26 is provided behind the first welding station 20, through which the back film tube 4 provided with the hygiene product is provided with one product stack 6. Are separated into packaging bags (27) that hold. This separate separation process allows for further individualized processing of each individual product stack 6 inserted and wrapped in the film. The separate separating unit 26 may then be provided with a cutting knife suitable for splitting the back film tube 4 in two, for example, between two consecutive product stacks 6.

After separate removal of the product stack 6, the conveying system 12 communicates with the interior of the redirection unit 28, in which the back film tube 4 provided with the hygiene product is relative to the direction of conveyance. It is rotated about the rotation angle 32 previously set. The angle of rotation 32 was then chosen to allow lateral access to the yet unwelded end face 34 of the packaging bag 27 holding the individual product stack 6 after rotation. Correspondingly, the rotation angle 32 corresponds to the angle set by both sides of the product stack 6 based on the bottom area of the product stack 6. In this embodiment the product stack 6 has a generally rectangular bottom face, resulting in a rotation angle of 90 [deg.].

The diverting unit 28 in this embodiment changes the conveying direction of the sanitary product on the conveying system 12 by 90 ° in the region of the diverting unit 28-as indicated by the arrow 30. It was formed to be. Such a change in the conveying direction is made so that the orientation of the product stack 6 is not changed by the packaging bag 27 surrounding the product stack 6, and as a result, the direction change unit when viewed relative to the conveying direction. Within 28 the orientation of the product stack 6 is changed by about 90 °.

The product stack 6 inserted and wrapped in the back film 10 can be fed from the redirection unit 28 to the second welding station 36 connected thereafter via the transfer system 12. Within the second welding station 36 welding of the end face 34 of the packaging bag 2 for the product stack 6 takes place, in this case also due to the orientation of the product stack 6. Welding can be made from this side relative to the conveying direction. For this purpose the second welding station 36 likewise comprises heating means 38 arranged on the side, which heating means can be embodied, for example, as heating mirrors arranged on both sides of the product flow.

The conveying system 12 then communicates with the interior of the cooling apparatus connected behind the second welding station 36, in which cooling of the packaging bag 27 just welded takes place.

In order to enable welding of the end face of the packaging bag 27 in the second welding station 36, first of all, the so-called folding process, more specifically the end face 34 of the packaging bag 27 is preliminarily folded. The process takes place. As can be seen from FIGS. 2 and 3, where a packaging bag 27 holding a product stack 6 is shown, a generally square packaging bag 27 is in addition to its two end faces 34. Two side walls 40, one front face 42, one back face 44 and two lateral narrow faces 46. Each side wall 40 forms one end flap 48 at each end face. In the end folding process, the end flaps 48 of the side walls 40 are folded up and folded as shown in FIG. 2 and then overlapped. For this purpose an end flap 48 assigned to the narrow face 46 is first wrapped and then an end flap 48 assigned to the front face 42 and the rear face 44 is folded up.

In order to carry out the end folding process, the packaging device 1 comprises a folding station 50 arranged in the conveying system 12-as shown in an enlarged view in the top view of FIG. 4. The folding station has a process of folding the end of the packaging bag 27 from side to side, more particularly by side approach, continuously on both sides and without interruption of the production- or transfer process, in particular a system- or transfer stop state. It is designed to be consistent and avoidable. For this purpose the folding station 50 comprises one support element 52, each formed as a folding wheel with a horizontal axis of rotation 51, arranged on either side of the conveying system 12. Each of the supporting elements 52 is arranged with a small number of folding cams 54 which can pass through the packing bag 27 from the rear side to the front side, respectively, when viewed in the conveying direction. In this case, it is recognized that the process of normally folding the rear end flap 48, especially when viewed in the conveying direction of the packaging bag 27, may be a problem for the end folding process that can continuously execute the conveying process. Based on that. In order to respond to this recognition, the folding cam 54 is formed in the form of a "overtapping folding cam", in which case the folding cam is of higher speed compared to the conveying speed of the packaging bag 27 from the rear. Approaching the end flap 48 at the rear of the furnace. After the folding cam 54 reaches the end flap 48, the folding cam causes the end flap to fold forward due to the excess speed.

For clarity, the conveying direction is symbolically represented by arrow 30 in FIG. 2, and the “overtaking” folding cam 54 is schematically shown.

As can be seen from the illustration of the folding station 50 shown enlarged in cross-sectional view in FIG. 4, the folding station was implemented symmetrically to simultaneously process both end faces 34 of the packaging bag 27, Each side of the conveyor belt 56 provided for the transport of the packaging bag 27 includes the necessary folding elements. In the embodiment herein the conveying element 52 is arranged on the common axis of rotation 51 for the movable individual folding cam 54. To complement the “overtaking” folding cam 54, the folding station 50 for each end face 34 includes another additional folding cam 60 which is each fixedly supported. The additional folding cam is used for the purpose of folding up the individual end flaps 48 in front when viewed in the conveying direction of the packaging bag 27 when the end face 34 is folded. In other words, when transporting the packaging bag 27 through the folding station 50, the packaging bag passes through the fixed supported folding cam 60, in which case the end flap in the forward direction is seen. 48 collides with the folding cam 60, is fixed by the folding cam, and is folded up during the process of continuously transporting the packaging bag 47.

A control unit 62 is assigned to the folding station 50, through which the rotational speed of the rotational shaft 51 and the speed of movement of the folding cam 54 overtaking it can be adjusted. The control unit 62 is then formed on the basis of the system clock of the packaging device 1, in particular by means of a speed profile for the overtaking folding cam 54 which is suitably stored, in more detail the folding cam 54. While approaching the individual end flaps 48 from this rear side, the excess speed of the folding cam 54 is formed to be set relatively large relative to the conveying speed of the individual packaging bags 27, while the folding cam 54 is formed of the end flaps ( At the time of reaching 48 and overlapping with the end flap, a relatively less excess speed or even temporarily standstill of the folding cam, i.

The movement progress generated from the above contents is schematically illustrated in the sequence a-n of FIG. 5. 5 shows a support element with a folding cam 54 embodied and integrally formed as a folding wheel with a horizontal axis of rotation 51 and additionally a small number of packaging bags 27 conveyed on a conveying belt 56 ( One support element of each of the 52 is shown in side view, in which case the end face 34 of the individual packaging bag 27 can be seen for reasons of side view. In the sequences a-n, it can be seen that the packaging bag continues to be conveyed from right to left in the conveying direction indicated by the arrow 30. By suitable triggering, the support element 52 provided with the folding cam 54 is moved in an adapted state for the triggering.

In the sequence steps a and b, the individual folding cams 54 are in the conveying- or approaching step-by means of a suitably set and relatively high rotational speed of the rotational axis 51-approaching the packaging bag 27 from the rear at a relatively large speed. do. In the sequence step c, the folding cam 54 reaches the rear end flap 48 of the packaging bag 27 so that the self-contacting surface 64 (inside the drawing, ie facing towards the packaging bag 27) The packaging bag begins to fold up due to overlap with the. At this point in time, the rotational speed of the rotary shaft 51 and the movement speed of the folding cam 54 are reduced, and the folding cam is slowed down.

In sequence steps d-i, the folding cam 54 is laterally contacted with the end flap 48 to guide the end flap, with the end flap 48 being folded up. In this step, the folding cam 54 moves only relative to the packaging bag 27 at a relatively low excess speed, resulting in a relatively long lasting contact step. During the contacting step, a folding cam 54 guides and stabilizes the folded end flap 48 laterally.

In sequence step j the folded rear end flap 48 reaches the fixed front folding cam 60 and is continuously fixed and guided by the front folding cam; More specifically, a "transition" is made from the overturning folding cam 54 to the fixed folding cam 60.

In sequence steps k-n, the folding cam 54 is released from the folded up front flap 48, and the rotational speed of the support element 52 is raised again for the next conveying step. As such, the closest folding cam 54 in the circumferential direction can approach the closest packing bag 27 at a suitable speed.

Particularly preferably the relative speed between the folding cam 54 and the wrapping bag 27 which varies while the folding cam 54 passes through the wrapping bag 27 is particularly evident in the distance-time-diagram according to FIG. 6. I can tell. In this diagram the time on the x-axis and the position of the part on the y-axis are shown, in particular by the curve 66 for the packaging bag 27 and by the curve 68 for the folding cam 54. Is shown. The straight line of the curve 66 here clearly shows that the packaging bag 27 moves at the same speed on the transfer belt 56. Alternatively, the speed of the folding cam 54 is set relative to the packaging bag 27 according to the position of the folding cam (corresponding to the slope of the curve 68), in which case the folding cam 54 The speed of the folding cam 54 is relatively higher relative to the packaging bag 27 (ie, the curve 68 is steeper than the curve 66). There is a lower stage (ie, the stage where curve 68 is flatter than curve 66).

1: packaging device 4: (back-) film tube
6: (product-) stack 8: supply unit
10: back film 12: conveying system
14: supply rail 16: insertion station
18: mold shoe 20: first welding station
22: heating device 24: arrow
26: individual sorting unit 27: packing bag
28: direction change unit 30: arrow
32: rotation angle 34: end face
36: second welding station 38: heating means
40: side wall 42: front
44: rear 46: narrow side
48: end flap 50: folding station
51: axis of rotation 52: support element
54: folding cam 56: transfer belt
60: folding cam 62: control unit
64: contact surface 66, 68: curve

Claims (16)

In a method for packaging a product, in particular a hygiene product, in a packaging bag 27,
In this method, the end face 34 of the packaging bag is closed by inserting and wrapping the product into the individual packaging bag 27 and then folding up the end flaps 48 respectively formed on the end faces by the side walls 40. After being folded and welded, the packaging bag 27 passes through the welding station 36 in the conveying direction to weld its end face 34, and when folding the end face 34, a folding cam ( The folding cam 54 passes through the packaging bag 27 so that the end flap 48 at the rear when viewed in the transport direction of the packaging bag 27 is folded up from the rear when viewed in the transport direction. ,
A method for packaging a product, in particular a hygiene product, in a packaging bag. The method of claim 1,
The relative speed of the folding cam 54 is set on the basis of the conveying speed of the packaging bag 27, while the movement of the folding cam passing through the packaging bag 27 is relative to the rear end flap 48. Set depending on the position of the folding cam 54,
A method for packaging a product, in particular a hygiene product, in a packaging bag. 3. The method of claim 2,
Before the relatively lower excess speed of the folding cam 54 is set relative to the conveying speed of the packaging bag 27 in a subsequent fixing step, the folding cam (in the approaching step) is first opened in the approaching step. 54 approaches the rear end flap 48 from the rear and overlaps the rear end flap at a relatively large excess speed as compared to the conveying speed of the packaging bag 27,
A method for packaging a product, in particular a hygiene product, in a packaging bag. The method according to any one of claims 1 to 3,
When the end face 34 is folded, the front end flap 48 is folded up when viewed in the conveying direction of the packing bag 27 by passing through the folding cam 60 in which the packing bag 27 is fixedly supported. ,
A method for packaging a product, in particular a hygiene product, in a packaging bag. 5. The method according to any one of claims 1 to 4,
The individual end flaps 48 of both end faces 34 are folded up at the same time,
A method for packaging a product, in particular a hygiene product, in a packaging bag. 6. The method according to any one of claims 1 to 5,
The product to be packaged is inserted and wrapped in a bag film tube 4, which is then passed through a first welding station 20 to weld its longitudinal side. After welding the longitudinal side and before folding the end face 34, the packaging bag 27 provided with the product 6 is rotated relative to the conveying direction, corresponding to the angle formed by the two product sides colliding with each other. Rotated by an angle of 32,
A method for packaging a product, in particular a hygiene product, in a packaging bag. The method according to claim 6,
The packaging bag 27 provided with the product 6 is rotated by about 90 ° relative to the conveying direction,
A method for packaging a product, in particular a hygiene product, in a packaging bag. As a packaging device (1) for packaging a product (6), in particular a hygiene product, in a packaging bag (27), in particular for carrying out the method according to claim 1.
And a folding station 50 provided for folding the end face 34 and arranged in the conveying system 12 for the packaging bag 27, which is arranged in the support element 52 and in the conveying direction. Comprising a folding cam 54 which can pass through the packaging bag 27 from the rear to the front when viewed,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. The method of claim 8,
A control unit for adjusting the speed of movement of the folding cam 54 is assigned to the folding station 50 of the packaging device,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. The method of claim 9,
The control unit for adjusting the movement speed of the folding cam 54 is designed to depend on the position of the folding cam relative to the individual packaging bag 27,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. 11. The method according to any one of claims 8 to 10,
The folding station 50 of the packaging device comprises an additional folding cam 60 fixedly supported,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. The method according to any one of claims 8 to 11,
The folding station 50 of the packaging device is an additional folding cam which can pass through and / or is fixedly supported by the packaging bag 27 from the rear to the front when viewed in the transport direction for each end face 34. Including one each of (54, 60),
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. 13. The method according to any one of claims 8 to 12,
The support element 52 of the packaging device is formed as a folding wheel capable of rotating about a horizontal axis of rotation 51,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. 14. The method of claim 13,
The support element 52 of the packaging device is provided with a small number of folding cams 54, each of which has a contact face 64 for each end flap 48 to be folded up, each of which has a contact face. Has a size of at least half of the area of the individual end flaps 48,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. 15. The method according to any one of claims 8 to 14,
The product 6 to be packaged via the conveying system 12 of the packaging device can be supplied from the first welding station 20 to the folding station 50, and the packaging bag 27 provided with the product with respect to the conveying direction. With a redirection unit 28 disposed between the first welding station 20 and the folding station 50 in the direction of conveyance of the product for rotation by a relatively preset rotation angle 32,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags. The method of claim 15,
With a separate sorting unit for the packaging bag, arranged behind the first welding station 20 in the transport direction,
Packaging arrangements for packaging products, especially hygiene products, in packaging bags.

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