AT516092B1 - Apparatus and method for transporting tubular bag bodies - Google Patents

Abstract

Device (1) and method for transporting tubular bag bodies (2), having a longitudinal transport device (3) with which the tubular bag bodies (2) can be transported substantially in the direction (3 ') of their longitudinal extension, with a transverse transport device (8), with which the tubular bag bodies (2) can be transported substantially perpendicular to their longitudinal extent, and with a transfer device (9) for transferring the tubular bag bodies (2) from the longitudinal transport device (3) to the transverse transport device (8), wherein the transfer device (9 ) has at least one upper support surface (10) and a lower support surface (11) for the tubular bag body (2), wherein a switchable between an upper position and a lower position switch element (12) is provided, wherein the switch element (12) has an upper Guide element (14) and a lower guide element (15), wherein between the o Beren guide element (14) and the lower guide element (15) is formed a guide gap (16) for the passage of the tubular bag body (2), wherein the tubular bag body (2) in the upper position of the switch element (12) of the upper support surface (10). and in the lower position of the switch element (12) of the lower support surface (11) can be fed.

Description

Description: The invention relates to a device for transporting tubular bag bodies, having a longitudinal transport device with which the tubular bag bodies can be transported substantially in the direction of their longitudinal extension, with a transverse transport device, with which the tubular bag bodies are substantially perpendicular to their longitudinal extent can be transported, and with a transfer device for transferring the tubular bag body from the longitudinal transport device to the transverse transport device, wherein the transfer device has a support surface for supporting the tubular bag body.

Furthermore, the invention relates to a method for transporting tubular Sack¬körpern, wherein the tubular bag body initially transported substantially in the direction of their longitudinal extent and fed to a support surface, wherein the tubular bag body substantially perpendicular to the longitudinal extent of the Auflage¬ surface be transported away.

Such transport devices or transport methods have long been known in the art and are widely used in equipment for the production of sacks, in particular of fabric hoses. In this case, the starting point is usually a material web from which the tubular bag bodies, in particular with a cross-cutting device, are separated. Thereafter, the bag bodies are transported transversely in order to obtain access to the open end regions of the bag bodies in the subsequent production steps. For this purpose, various devices have been proposed in the prior art, with which the change of direction during transport of the tubular bag body is accomplished.

US 3,703,951 A relates to a device for transporting flat Schlauchab¬schnitten from which bags are made. The tube pieces are deposited in the longitudinal transport direction via a wedge-shaped pivotable switch element alternately on an ascending upper conveying surface and a sloping lower conveying surface. On the upper or lower conveying surface includes a transfer device, which in each case has a contact surface on which the hose pieces pass from the longitudinal transport direction in the Quer¬transportrichtung. By means of conveyor belts now transported in the transverse direction hose pieces are brought together again.

The US 4,431,104 A discloses a similar device, which, however, is designed for the transport of minced pimples.

From DE 10 2009 000 893 A1, a further device for changing the transport direction of flat tube pieces is known. The pieces of tubing are pushed one after the other in the longitudinal direction onto a support surface, in order to be subsequently taken along by a transfer device in the transverse direction. Before a piece of tubing can be transported transversely, the tubing piece in this prior art must first rest on the transverse transport plane with its side region so that the side region can be grasped by the transfer device. When the hose piece is pushed out onto the contact surface, it is therefore necessary that it is already partially arranged in the area of the transverse transporting legs, so that the hose piece rests on this level already shortly before its takeover. By design, the transport table in this prior art includes baffles against which the bag could be slid. As a result, the bag is compressed, possibly even damaged and a subsequent, proper onward transport of the bag is made more difficult. In order to avoid such collisions, DE 10 2009 000 893 A1 provides in one embodiment that the support surface of the transfer device is subdivided into a fixed part and a height-adjustable part. The height-adjustable part is designed like a plate and articulated via a rotation axis to the fixed part. The rotation axis runs in the feed direction of the hose. By means of a reciprocating cylinder, the height-adjustable area can now be pivoted about the axis of rotation, so that the side edge of the hose section projecting laterally beyond the height-adjustable area does not run against a disturbing edge of the transverse transport plane.

Moreover, in DE 10 2009 000 893 it is described that a following flat workpiece can be advanced a certain distance in the longitudinal direction, while the preceding workpiece is transported in the transverse direction by a distance which is smaller than the workpiece width. For this purpose, a pusher member is provided, with which the end of the flat tube piece in a region below the plane on which the end rests first, can be pressed. This area can be a free space laterally or below the support plane. The pusher element can comprise a pneumatic piston cylinder with which a pusher finger or a pusher bar can be moved. The pusher finger or the pusher bar then come into contact with it in an area of the hose piece, this area not resting on the level. When the pusher element is moved, the end of the tube piece thus folds down and slides along a side surface of the support element comprising the support plane until the end reaches the free space and becomes straight again due to restoring forces. However, this embodiment is nach¬teiligerweise structurally complex and not always reliable.

Accordingly, the object of the present invention is to alleviate or eliminate the disadvantages of the prior art. The invention is therefore in particular the goal of making the transfer of the tubular bag body from the longitudinal transport device to the transverse transport device with structurally simple means and while avoiding Be¬triebsausfällen so that the rate of the processed bag body is increased.

This object is achieved by a device according to claim 1 and a method according to claim 17 ge. Preferred embodiments are given in the dependent claims.

According to the invention, the transfer device at least an upper bearing surface and a lower support surface for the tubular bag body, wherein a switchable between an upper position and a lower position switch element is provided, wherein the tubular bag body in the upper position of the switch element of obe¬ren bearing surface and in the lower position of the switch element of the lower support surface are fed.

The tubular bag body are transported by means of the longitudinal transport entlangeiner particular horizontal longitudinal transport plane to the transfer device with which the tubular bag body of the transverse conveyor are supplied to perform a change of direction by substantially 90 °. As a result, the open end regions of the tubular bag bodies are arranged on the sides of the transverse transport device in order to gain access to the open end regions of the bag bodies in subsequent processing stations, for example a bottom opening device. The transfer device between the longitudinal and the transverse transport device has according to the invention an upper support surface and a lower support surface. The terms "top" and "bottom" refer to the operating position of the device. Accordingly, the tubular bag body can be guided in the operation of the device by switching the Weichenele¬ments alternatively to the upper or lower support surface. The transfer device preferably has a suitable driver element, for example a driver roller, with which the tubular bag body is transferred from the respective support surface to the transverse conveyor. Thereafter, the tubular bag body are transported in the direction of transport. Advantageously, delays in passing through the transfer device can be avoided by the at least two receiving surfaces. According to the invention, successive bag bodies can be arranged in overlapping manner over the support surfaces during transport. Accordingly, the tubular bag body in the longitudinal transport direction can be pushed onto the one bearing surface, while a preceding bag body in the transverse transport direction is transported away from the other bearing surface. Advantageously, it is therefore not necessary to guide the bag body completely away from the transfer device before the next bag body arrives at the transfer device. The number of bag bodies of the transfer device handled per time can thereby be increased substantially. Compared to the prior art, it is advantageous that the increase of the throughput rate at the transfer device is achieved on the one hand with technically simple means and on the other hand the separate bearing surfaces of the transfer device enable reliable operation of the device, in which disturbances can largely be prevented. Of course, more than two bearing surfaces can be provided. In some applications, it is favorable if the transfer device has at least one middle support surface between the upper and the lower support surface. To form the bearing surfaces, plate-shaped bearing elements are preferably provided. Preferably, the bearing surfaces are arranged in horizontal planes. However, the bearing surfaces may also be tilted with respect to the horizontal.

In order to make the transport of the tubular bag body along the Längstransporteinrich¬tung obstacle-free, the switch element has an upper guide element and a lower guide element, wherein between the upper guide member and the lower guide element a guide gap for the passage of the tubular bag body is ausgebil¬det. Accordingly, the tubular bag bodies are conveyed through the guide gap of the white element, wherein the tubular bag bodies are guided, depending on the position of the white element, to the upper bearing surface or to the lower bearing surface.

With regard to a space-saving, compact design, it is advantageous if the upper and the lower bearing surface of the transfer device are arranged one above the other. Preferably, essentially identical, in particular horizontal bearing surfaces are provided. Of course, more than two bearing surfaces, for example three or four bearing surfaces, may also be arranged directly above one another.

In order to improve the capacity of the transport device, it is advantageous if the Weicheelement for alternately feeding the tubular bag body to the upper and the lower bearing surface of the transfer device is formed. Thus, the tubular bag bodies are alternately fed to the upper and lower bearing surfaces of the transfer device. If more than two bearing surfaces are provided, the tubular bag bodies are preferably divided sequentially onto the individual bearing surfaces of the transfer device.

For pivoting the switch element between the upper position and the unte¬ren position, it is advantageous if the switch element is connected to a pivot drive. By actuating the pivoting drive, the supply of the tubular Sackkör¬per can be controlled to the upper and lower bearing surface. Preferably, the control of the pivot drive is adapted to the tubular bag body alternately the upper or. to feed the lower support surface.

In order to transport the tubular bag body to the upper and lower support surface, it is advantageous if the pivot drive for pivoting the switch element at least one parallel to the transport plane of the longitudinal conveyor extending, substantially perpendicular to the longitudinal transport direction extending pivot axis is pivotable. Accordingly, the switch element can be tilted upwards about the at least one, in particular horizontal, pivot axis, in order to guide the bag body arriving at the switch element to the upper support surface. On the other hand, the switch element can be tilted down to guide the arriving at the switch element bag body to the lower bearing surface.

In order to make the transport of the tubular bag body along the Längstransporteinrich¬tung obstacle-free, it is advantageous if the switch element has an upper Füh¬rungselement and a lower guide element, wherein between the upper Füh¬ rungselement and the lower guide element, a guide gap is formed for passage of the tubular bag body. Accordingly, the tubular Sackkör¬per be promoted by the guide gap of the switch element, wherein the tubular

Sack body are guided depending on the position of the switch element to the upper support surface or the lower support surface.

Particularly preferred is an embodiment in which the upper guide element at least one upper finger element, preferably a plurality of perpendicularly to the Längstransportrich¬tung spaced upper finger elements, and / or the lower guide element at least one lower finger element, preferably a plurality of perpendicular to the longitudinal direction of transport beab¬standete lower finger elements, having. In the case of a plurality of finger elements, it is favorable if the upper finger elements and / or the lower finger elements can be moved together, in particular pivotable, between the upper position and the lower position.

According to an alternative embodiment, a plate member, in particular a guide plate, is provided as the upper and / or lower guide element, which is adjustable for transporting the tubular bag body in the direction of the upper or lower bearing surface between the upper and lower position.

To the switch element for dividing the tubular bag body to the upper or. To convert the lower support surface, it is advantageous if the upper guide element, in particular the upper finger elements, are mounted on an upper shaft element and / or the unte¬re guide element, in particular the lower finger elements, on a lower Wellenele¬ment. The shaft element is preferably coupled to the pivot drive in order to enable the changeover of the switch element between the upper and the lower position.

In order to transport the tubular bag body continuously and with high reliability to the respective bearing surface of the transfer device, it is advantageous if between the switch element and the upper support surface rising in the direction of transport upper conveying surface and / or that between the switch element and the lower support surface in the longitudinal transport direction Preferably, a substantially horizontal longitudinal transport plane is provided, to which the conveying surfaces connect to the bearing surfaces of the transfer device. The Weichen¬ element is preferably arranged in the transition region between the longitudinal transport plane and the För¬derflächen.

For this purpose, it is favorable if the upper conveying surface and / or the lower conveying surface are arranged at an obtuse angle to the longitudinal conveying plane of the longitudinal conveying device. As a result, the tubular bag body can be guided obliquely upward depending on the position of the switch element to the upper support surface or obliquely down to the lower support surface of the transfer device. The longitudinal transport plane is preferably arranged in the vertical direction substantially in the middle between the upper support surface and the lower support surface of the transfer device.

In order to allow the division of the film flow in the transition from the longitudinal transport plane to the conveying surfaces, according to a structurally simple embodiment, a wedge element for forming front portions of the upper and lower conveying surface between the switch element and the transfer device is provided, wherein the Keilele¬ment preferably between a upper position corresponding to the lower position of the Wei¬chenelementes and a lower position corresponding to an upper position of the Weichen¬elementes displaced, in particular pivotable. Preferably, therefore, the wedge member is disposed in the lower position when the switch member is located in the upper position, and vice versa. Advantageously, the guide path to the upper or lower support surface of the transfer device is released so reliably. In this preferred embodiment, it is possible, in particular, to prevent the bag bodies from colliding with the wedge tip of the wedge element. Preferably, the switch element on the previously described Führungs¬elemente, with which the bag body in particular alternately in the direction of the upper or. be supported lower support surface, wherein the wedge element between the lower or. moved to the upper position.

The supply of the tubular bag body to the respective bearing surface of the transfer device is facilitated when an upper conveyor drive, in particular with zumin¬dest a conveyor belt, for transporting the tubular bag body on the upper För¬ surface between the switch element and the upper support surface and / or a lower conveyor drive, in particular with at least one further conveyor belt, is provided for transporting the tubular bag body on the lower conveyor surface between the switch element and the lower support surface of the transfer device.

For the removal of the tubular bag body from the transfer device is advantageous if the upper support surface and the lower support surface of the transfer device are connected via an upper and a lower merge section with a common transverse transport plane of the transverse transport device. Accordingly, the tubular bag body are guided by the bearing surfaces of the transfer device in the insbe¬sondere horizontal transport plane of the transverse conveyor. Preferably, the tubular bag bodies are alternately guided from the upper and the lower support surface along the merge sections to the common transverse transport plane of the transverse transport device. Preferably, further conveying drives, in particular with conveyor belts, are provided for transporting the tubular bag bodies on the joining sections. The merging sections can be designed in accordance with the conveyor sections between the switch element and the transfer device. Preferably, a horizontal transverse transport plane is provided, which preferably essentially coincides with the common longitudinal transport plane.

Moreover, it is favorable in this embodiment, when the upper Zusammenfüh¬ rungsabschnitt and / or the lower merge portion are each arranged at an obtuse angle to the transport plane of the transverse conveyor. Accordingly, the upper merging section leads obliquely downwards, while the lower merging section leads obliquely upwards. The common transverse transport plane of the transverse transport device is preferably arranged in the vertical direction substantially in the middle between the upper bearing surface and the lower bearing surface of the transfer device.

As usual with sack manufacturing plants, it is advantageous if a separating means is provided for separating the tubular sack bodies. With the aid of the singulation device, a tubular material web can be divided into individual tubular, i. open end areas forming, bag bodies are divided. The separating device is preferably arranged in the region of the longitudinal transport device. The material web and - after their separation - the tubular bag body are in the flat state, i. with stacked bag sections, transported by the longitudinal transport device.

As separating means, a cross-cutting device is preferably provided for cutting through a tubular material web transversely to the longitudinal transport direction. Such cross-cutting devices are known per se in the prior art. For example, a rotating knife roller can be provided, with which the material web is cut transversely to the longitudinal direction of transport.

As usual with bag manufacturing plants, an opening device for forming a bottom opening between bag sections is preferably provided at the open end area of the tubular bag body. The opening device is preferably arranged in the region of the transverse transport device. In the process, the bag bodies arriving in the flat state are opened in the floor area before the bag floor is formed in a floor laying station which is also known in the prior art.

The inventive method is characterized in that the schlauchförmi¬gen bag body by switching a switch element having an upper Führungsele¬ment and a lower guide element, wherein between the upper Führungsele¬ment and the lower guide element, a guide gap for the passage of the schlauchförmi The bag body is designed to be fed to an upper support surface and to a lower support surface, from which the tubular bag bodies in the transverse transport direction are transported away substantially perpendicular to their longitudinal extent.

The advantages and technical effects of this method will become apparent from the vorste¬enden embodiments of the transport device according to the invention.

Particularly favorable is an embodiment in which the tubular bag body alternately the upper bearing surface and the lower bearing surface are fed. Thus, the throughput of the tubular bag body can be increased by the transfer deviceessentially.

The invention will be explained below with reference to a preferred embodiment, to which, however, it should not be limited. 1 and 2 are diagrammatic sectional views of a device according to the invention for transporting tubular bag bodies, which are initially transported in the direction of their longitudinal extent, then alternately an upper support surface (see Fig. 1) and a lower support 2) and finally transported away in the direction perpendicular to their longitudinal extent; and [0035] FIGS. 3, 4 each schematically show a perspective view of the device according to FIG

Fig. 1, 2, wherein the tubular bag body of the upper Auflageflä¬che is supplied.

In the figure, a device 1 for transporting tubular bag bodies 2gege. The device 1 comprises a longitudinal transport device 3, with which a tubular material web, in particular a fabric hose (not shown), in the flat state along a horizontal transport plane in the longitudinal transport direction 3 ', i. in the direction of their longitudinal extent, is transported. The web forms a series of bag bodies 2 which, as will be explained later, are separated thereafter. The longitudinal transport device 3 has a longitudinal drive, in particular in the form of tensioning or transport rollers, which are known in the prior art and therefore do not require any further explanation. In addition, the longitudinal transport device 3 is assigned a singling device 5 with which the tubular bag body 2 is formed from the material web. In the embodiment shown, as a separating device 5, a cross-cutting device is provided for cutting the tubular material web transversely to the longitudinal transport direction 3 ', which has an upper roller element 6 with a measuring element and a lower roller element 7 with a corresponding receiving opening. The roller elements 6, 7 are rotatably mounted in opposite directions, so that the material web for separating the bag body 2 is cut once in each revolution once transverse to the longitudinal extension. For tensioning the material web in the Querschneide¬einrichtung a tension roller 4 is provided. The tubular bag bodies 2 consist of two stacked bag sections, each bag section being made up of several layers of different material. The tubular bag bodies 2 are thereafter transported in the flat state in the longitudinal transporting direction 3 'with the open end portions of the tubular bag bodies 2 being disposed at the front and rear ends, respectively.

As can be seen from Fig. 3, 4, the device 1 also has a Quertransporteinrich¬ tung 8, with which the tubular bag body 2 in the transverse transport direction 8 ', i. substantially perpendicular to its longitudinal extension, to be fed to a bottom opening device (not shown) for forming a bottom opening at the open end region of the tubular sack bodies 2. In addition, a transfer device 9 for transferring the tubular bag bodies 2 from the longitudinal transport device 3 (shown only schematically in FIGS. 3, 4) to the transverse transport device 8 is provided.

As can further be seen from FIGS. 3, 4, the transfer device 9 has an upper support surface 10 and a lower support surface 11 for the tubular sack bodies 2. Vor¬ geous enough, delays in the transport of the tubular bag body by the transfer device 9 can be largely prevented. As a result, a tubular bag body 2 can already be pushed onto the one bearing surface 10, 11, while the leading bag body 2 has not yet left the other bearing surface 11 or 10. In the embodiment shown, the upper 10 and the lower support surface 11 of the transfer device 9 are arranged one above the other in horizontal planes. The bearing surfaces 10, 11 are provided on the upper sides of plate-shaped support elements. Of course, more than the two bearing surfaces 10, 11 may be provided.

To alternately feed the tubular bag bodies 2 to the upper support surface 10 and the lower support surface 11, there is provided a switch element 12 which is convertible between an upper position (see Fig. 1) and a lower position (see Fig. 2). In the upper position of the switch element 12 according to FIG. 1, the tubular bag bodies 2 are fed to the upper support surface 10 and in the lower position of the switch element 12 according to FIG. 2 to the lower support surface 11. According to FIGS. 1, 2, a plurality of bag bodies 2 are guided in succession to the upper 10 and lower bearing surface 11, respectively. Preferably, however, it is provided that the tubular bag bodies 2 are alternately supplied to the upper 10 and the lower support surface 11, respectively. As a result, the number of processed Sack¬ body 2 can be significantly increased.

As can be seen from Fig. 1, 2, the switch element 12 is connected to a pivot drive 13, with which the switch element 12 about a in the longitudinal transport plane of the longitudinal transport device 3 extending, substantially perpendicular to the longitudinal transport direction 3 'extending pivot axis is pivotable. In the embodiment shown, the soft element 12 has an upper guide element 14 and a lower guide element 15. Between the upper guide element 14 and the lower guide element 15, a guide gap 16 is formed which allows the tubular bag body 2 to pass in the longitudinal direction 3 '. The upper guide element 14 has at least one upper finger element 14 '. Accordingly, the lower guide element 15 at leastein lower finger element 15 '. Conveniently, a plurality of perpendicularly to the Längstransport¬richtung 3 'spaced upper finger elements 14' and a plurality of perpendicular to Längstransport¬richtung 3 'spaced lower finger elements 15' are provided, which are pivoted together between the upper position shown in FIG. 1 and the lower position shown in FIG For this purpose, the upper guide member 14 is mounted on an upper shaft member 17 and the lower guide member 15 on a lower shaft member 18 having parallel to the longitudinal transport plane of the longitudinal conveyor 3 extending pivot axes for the conversion of the switch element 12.

As can be further seen from Fig. 1, 2, between the switch element 12 and the upper bearing surface 10 in the longitudinal transport direction 3 'rising upper conveying surface 19 is provided. Accordingly, between the switch element 12 and the lower Auflageflä¬che 11 in the longitudinal transport direction 3 'sloping lower conveying surface 20 is provided. The upper conveying surface 19 and the lower conveying surface 20 are each arranged at an obtuse angle to the longitudinal conveying plane of the longitudinal conveying device 3 ', which in the embodiment shown extends horizontally. For forming front portions of the upper 19 and lower conveying surface 20 between the switch element 12 and the transfer device 9, a wedge element 21 is provided in the embodiment shown. For transporting the tubular bag body 2 on the upper conveying surface 19 between the switch element 12 and the upper bearing surface 10, an upper conveyor drive 22 is provided which has a conveyor belt 23 on each side of the upper conveyor surface 19. In addition, a lower conveyor drive 24 is provided for transporting the tubular bag body 2 on the lower conveyor surface 20 between the switch element 12 and the lower support surface 11 of the transfer device 9. The lower conveyor drive 24 is formed according to the upper conveyor drive 22 with further conveyor belts 25 on both sides of the lower conveyor surface 20. The support surfaces 10, 11 may be associated with corresponding conveying means to arrange the hose-shaped bag body in a completely resting on the support surfaces 10, 11 trigger adjustment.

By periodically changing the switch element 12, the tubular bag body 2 are divided alternately on the upper support surface 10 and the lower support surface 11 of the transfer device 9.

As can be seen from FIGS. 3, 4, the upper support surface 10 and the lower support surface 11 of the transfer device 9 are connected via an upper merging section 26 and a lower merging section 27 to a common, horizontal transverse transport plane of the transverse transport device 8 to the opening means (not shown) for forming a bottom opening between bag portions at the open end portion of the tubular bag bodies. The upper merging portion 26 and the lower merging portion 27 are corresponding to the upper conveying surface 19bzw. lower conveying surface 20 between the switch element 12 and the transfer device 9 is formed. Accordingly, the merge sections 26, 27 are each arranged at a blunt angle to the transverse transport plane of the transverse transport device 8 to alternately nachunten the tubular bag body 2 from the upper support surface 10 and from the lower support surface 11 obliquely upward to the common transverse transport plane of the transverse conveyor 8 to lead.

As can be seen from Fig. 3, 4, the transfer device 9 for each support surface 10,11 (only schematically apparent) driver element 28 in the form of driver rollers, with which the tubular bag body 2 of the respective support surface 10, 11 in the associated merging section 26, 27 are taken. In addition, the transfer device 9 for each support surface 10, 11 a hold-down element 29, which is adjustable for temporary clamping of the tubular bag body 2 between a Frei¬gabestellung and a clamping position. The hold-down element 29 is lowered onto the bag body 2 as soon as it has reached its withdrawal position.

Claims (18)

1. Device (1) for the transport of tubular bag bodies (2), with a longitudinal transport device (3), with which the tubular bag body (2) substantially in the direction (3 ') of its longitudinal extent are transportable, with a Quertransporteinrich¬tung (8), with which the tubular bag bodies (2) are transportable substantially perpendicularly to their longitudinal extent, and with a transfer device (9) for transferring the tubular bag bodies (2) from the longitudinal transport device (3) to the transverse transport device (8), wherein the transfer device (8) 9) has a support surface for supporting the tubular bag bodies (2), the transfer device (9) comprising at least one upper support surface (10) and a lower support surface (11) for the tubular bag body (2), one between an upper position and a lower position switchable switch element (12) is provided, characterized ge¬k characterized in that the switch element (12) has an upper guide element (14) and a lower guide element (15), wherein formed between the upper guide element (14) and the lower guide element (15) is a guide gap (16) for the passage of the tubular bag body (2) is, wherein the tubular bag body (2) in the upper position of the switch element (12) of the upper support surface (10) and in the lower position of the switch element (12) of the lower support surface (11) can be supplied. 2. Device (1) according to claim 1, characterized in that the upper (10) and the lower bearing surface (11) of the transfer device (9) are arranged one above the other. 3. Device (1) according to claim 1 or 2, characterized in that the Weichen¬element (12) for alternately supplying the tubular bag body (2) to the upper (10) and the lower support surface (11) of the transfer device (9) is. 4. Device according to one of claims 1 to 3, characterized in that the Wei¬chenelement (12) with a pivot drive (13) for pivoting the Weichenele¬ments (12) is connected between the upper position and the lower position. 5. Device (1) according to claim 4, characterized in that the pivot drive (13) for pivoting the switch element (12) to at least one parallel to the transport plane of the longitudinal transport means (8) extending, substantially perpendicular to the longitudinal transport direction (3 ') extended Swivel axis is pivotable. 6. Device (1) according to one of claims 1 to 5, characterized in that the upper guide element (14) at least one upper finger element (14 '), preferably a plurality of perpendicular to the longitudinal transport direction (3') spaced upper finger elements (14 ') and / or the lower guide element (15) at least one lower finger element (15 '), preferably a plurality of perpendicular to the longitudinal transport direction (3') spaced unte¬re finger elements (15 ') having. 7. Device (1) according to one of claims 1 to 6, characterized in that the upper guide element (14), in particular the upper finger elements (14 '), on an upper shaft element (17) and / or the lower guide element (15), in particular the lower finger elements (15 ') are mounted on a lower shaft element (18). 8. Device (1) according to one of claims 1 to 7, characterized in that zwi¬schen the switch element (12) and the upper bearing surface (10) in a longitudinal transport direction (3 ') rising upper conveying surface (19) and / or that between the Weichen element (12) and the lower support surface (11) in the longitudinal transport direction (3 ') sloping lower conveying surface (20) is provided. 9. Device (1) according to claim 8, characterized in that the upper conveying surface (19) and / or the lower conveying surface (20) are arranged at an obtuse angle to the Längstransport¬ebene the longitudinal transport device (3). 10. Device (1) according to claim 8 or 9, characterized in that a wedge element (21) for forming front portions of the upper (19) and lower conveying surface (20) between the switch element (12) and the transfer device (9) is provided is, wherein the wedge member (21) preferably between an upper position corresponding to the lower position of the switch element (12) and a lower position according to ei¬ner upper position of the switch element (12) displaceable, in particular pivotable bar. 11. Device (1) according to one of claims 8 to 10, characterized in that an upper conveyor drive (22), in particular with at least one conveyor belt (23), for transporting the tubular bag body (2) on the upper conveying surface (19) between the switch element (22). 12) and the upper support surface (10) and / or a lower Förder¬ drive (24), in particular with at least one further conveyor belt (25), for transporting the tubular bag body (2) on the lower conveying surface (20) between the Wee element (12) and the lower support surface (11) of the transfer device (9) is provided. 12. Device (1) according to one of claims 1 to 11, characterized in that the upper bearing surface (10) and the lower bearing surface (11) of the transfer device (9) via an upper (26) and a lower merging portion (27) with a ge¬meinsamen transverse transport plane of the transverse transport device (8) are connected. 13. Device (1) according to claim 12, characterized in that the upper Zusammen¬führungsabschnitt (26) and / or the lower merging section (27) are each arranged in ei¬nem obtuse angle to the transport plane of the transverse transport device (8). 14. Device (1) according to one of claims 1 to 13, characterized in that a singulation device (5) for separating the tubular bag body (2) is provided. 15. Device (1) according to claim 14, characterized in that as a separating device (5) a cross-cutting device for cutting a tubular material web transversely to the longitudinal transport direction (3 ') is provided. 16. Device (1) according to one of claims 1 to 15, characterized in that an opening device for forming a bottom opening between bag portions at the open end region of the tubular bag body (2) is provided. 17. A method for transporting tubular bag bodies (2), wherein the tubular bag bodies (2) are initially transported substantially in the direction of their longitudinal extension and fed to a support surface, the tubular bag bodies (2) being substantially perpendicular to their longitudinal extension be transported away from the support surface, wherein the tubular bag body (2) by converting a Wei¬chenelements (12) an upper support surface (10) and a lower support surface (11) are supplied, of which the tubular bag body (2) in transverse transport Are removed substantially perpendicular to its longitudinal extent, characterized in that the tubular bag body (2) by a Füh¬rungsspalt (16) between an upper guide element (14) and a lower guide element (15) of the switch element (12) is formed to be conveyed, wherein the tubular bag Body (2) depending on the position of the switch element (12) to obe¬ren support surface (10) or the lower support surface (11) are guided. 18. The method according to claim 17, characterized in that the tubular Sack¬ body (2) alternately the upper support surface (10) and the lower support surface (11) are supplied. 4 sheets of drawings