Transfer apparatus for contamination-free transport of containers in an apparatus for treating containers

Abstract

The present invention relates to a transfer apparatus (T) for contamination-free transport of containers (B), made of a thermoplastic material, in the region of an apparatus for treating containers (1), in particular a forming machine, for example a stretch forming machine or stretch blow moulding machine (4) for forming containers (B), wherein: the transfer apparatus (T) has a transport device (107) which is movably mounted on a base (112) and which has multiple container carriers (108) which are distributed around the circumference of the transport device in the circumferential direction and are designed to hold and convey the containers (B) along a transport path; the transfer apparatus (T) has a suction-extraction hood (160), which comprises an air discharge opening (162) for discharging air from the interior of the suction-extraction hood (160), an air intake opening (163), different from the air discharge opening (162), for taking in air from outside the suction-extraction hood (160), and a casing (164) which encloses the suction-extraction hood except for the air discharge opening (162) and air intake opening (163); the air intake opening (163) of the suction-extraction hood (160) is directed towards the transport device (107) and the air discharge opening is designed to be connected to an air discharge device (8), in order to extract air by suction from the interior (165) of the suction-extraction hood (161), in such a way that a suction flow (6) is generated there and detached foreign particles, dirt, germs and / or microorganisms are extracted towards the air discharge opening (162) by suction and do not reach the containers (B). The invention also relates to apparatuses and methods for forming containers.

Description

[0001] Eisenführ Speiser - 1 / 62 -

[0002] 5 0

[0003] Hamburg, August 15, 2025 Our reference: KH 481-02WO NHF / BPF / csp

[0004] Applicant / Owner: KHS GmbH Official File Number: New Application 0

[0005] KHS GmbH

[0006] Juchostraße 20, 44143 Dortmund,

[0007] Transfer device for contamination-free transport of containers in a device for treating containers 5

[0008] The present invention relates to a transfer device, such as a transfer wheel, for the contamination-free transport of containers in a device for treating containers, in particular in a forming machine, e.g. a stretch blow molding machine.

[0009] The production of containers by blow molding from preforms made of a thermoplastic material, for example, from PET (polyethylene terephthalate) preforms, is well known. In this process, the preforms are fed to different processing stations within a blow molding machine, which is a type of device for processing containers. Typically, a blow molding machine has a heating device for tempering or thermally conditioning the preforms, as well as a blowing unit with at least one blowing station, in which the previously temperature-conditioned preform is expanded into a container. In this context, stretch blow molding machines are the focus, in which the preform is stretched by means of a stretching strand during expansion.

[0010] In the present context, the term "container" refers not only to a finished container but also to a preform from which the finished container is manufactured. For the purposes of this application, the term "container" therefore refers equally to preforms and to finished containers manufactured from them.

[0011] Methods for temperature control of preforms are explained, for example, in DE 23 52 926 A1. Temperature control or thermal conditioning in this context means that the preform is heated to a temperature suitable for forming and, if necessary, a temperature profile is applied to the preform in the longitudinal and / or circumferential direction.

[0012] Before heating, the preforms are typically placed on transport mandrels that either transport the preform through the entire forming machine (e.g., forming machine, blow molding machine) or simply circulate within the heating unit. For heating the preforms vertically, with their openings pointing downwards, they are usually placed on a sleeve-shaped retaining element of the transport mandrel. For heating the preforms vertically, with their openings pointing upwards, expanding mandrels are typically inserted into the openings to clamp the preforms in place.

[0013] Expansion into the finished container is achieved, for example, using a pressurized gas, particularly compressed air, as the pressure medium, which is introduced into the preform to be expanded under forming pressure. The process engineering procedure for such expansion of the preform is explained in DE 43 40 291 A1. The basic structure of a blow molding station is described in DE 42 12 583 A1. According to a typical downstream processing method, the containers produced by blow molding are fed to a subsequent filling unit and filled there with the intended product or fill material. However, it is also possible to produce containers from preforms and simultaneously fill them with a fill material, which is supplied as a hydraulic pressure medium for expanding the preform or for shaping the container under forming and filling pressure. This allows the respective preform to be transformed into the container simultaneously with the filling process.In specialist circles, such methods and devices for simultaneously forming and filling preforms into containers are known under the names "FormFill" or "LiquiForm". The present invention can advantageously be applied to both of the aforementioned forming methods and both types of devices for forming preforms. A stretching bar is advantageously used for both types of devices.

[0014] Sterilization (also called sterilization) in this context refers to a germicidal treatment, for example, using chemical sterilizing fluids. The present disclosure should be viewed in the context of the fact that, for example, germ-sensitive beverages must be filled under aseptic or sterile conditions to achieve the desired shelf life. This requires, for example, that the containers into which the beverages are filled meet these sterile conditions, meaning that at least the surfaces in contact with the contents are largely germ-free, such that a sterilization treatment has been carried out to kill germs. For this purpose, finished containers can be sterilized before filling, or preforms can be sterilized before being formed into containers. In this way, both the preforms and the containers subsequently produced from them can be sterilized.Sterilizing the preform has the advantage over sterilizing the container produced from it that the surface area to be sterilized is much smaller, thus requiring a lower amount of sterilizing fluid. After sterilizing the containers, recontamination should be prevented as much as possible.

[0015] From DE 10 2014 010 283 A1, for example, it is known to rinse a preform with a sterilizing fluid while the preform is already in the forming station. It is also known to subject a preform to sterilization before it reaches the forming station (WO 2010 / 020530 A1), for example, on the way between the heating device and the forming station, or before the preform enters the heating device of a blow molding machine, or before a preform enters a blow molding machine, for example, in the area of ​​a feed rail for the preforms. From EP 2 588 295 A1, it is also known to sterilize a preform within the heating device.

[0016] A common method for sterilizing preforms involves adding hydrogen peroxide (H₂O₂) to the preform, heating it along with the hydrogen peroxide in a heating device, and then blowing a finished container into it. During this process, the majority of the hydrogen peroxide decomposes into oxygen and water. However, it is also known to add hydrogen peroxide between the heating device and the forming device. Upon depressurization to ambient pressure, the finished container is purged with 25 to 30 times its bottle volume, thus reducing any remaining hydrogen peroxide to a tolerable level. Similarly, sterilization fluid, such as hydrogen peroxide, can also be applied to the outside of the preforms.

[0017] It is known to carry out the treatment of containers, in particular a forming process in which preforms are transformed into containers, under sterile conditions. A cleanroom is typically used for this purpose, within which the treatment of the containers takes place, e.g., their manufacture by forming.

[0018] It is also known to designate a section within a forming machine, e.g., a blow molding machine, as a cleanroom, whereby this section is limited as far as possible to those areas in which the containers are guided and processed. Such a prior art is described, for example, in WO 2010 / 020529 A2, which concerns blow molding machines, in particular those using a stretch bar, i.e., stretch blow molding machines, and especially machines of a rotary design. Due to this rotary design, there are stationary cleanroom walls and cleanroom walls that move with the blow wheel, as well as seals arranged between them. This prior art also describes that a sterile gas is provided to maintain sterility within the cleanroom and that this sterile gas is at a pressure higher than the pressure outside the cleanroom. It is also mentioned that, optionally, an antimicrobial agent is continuously supplied to the cleanroom to maintain sterility.It is also mentioned there that the cleanroom in question extends to a filling machine located downstream of the blow molding machine and preferably to the area of ​​a closing device for sealing the filled containers. This WO 2010 / 020529 A2 also describes methods for sterilizing the preforms.

[0019] Typically, after the blow molding process, rinsing with a sterile rinsing fluid is performed to remove any traces of the sterilizing fluid from the finished container. This is described, for example, in WO 2014 / 139624 A1. The blow molding process itself already creates a rinsing effect, as the blowing gas used and its subsequent release contribute to the removal of the sterilizing fluid, insofar as it is still contained in the preform before molding. Furthermore, a sterilizing fluid, such as hydrogen peroxide, can decompose and is therefore no longer present in the preform or the container.

[0020] The term "treatment of containers" encompasses not only the aforementioned transformation of preforms, which are also considered containers, but also, for example, filling, sealing, labeling, sterilizing, cleaning, etc. This action required for treatment does not necessarily have to involve a change to the container itself; it can, for example, simply involve inspecting a container to determine whether it should be rejected. It can also include measuring the container, for instance, to use the measured values ​​for control or analysis. However, "treatment" does not refer to mere transport.

[0021] Transfer devices, in particular transfer wheels, are disclosed, for example, in WO 2017 140330 A1. Handling containers using transfer devices, such as transfer wheels (also called transfer wheels), is described, for example, in DE 199 06 438 for the arrangement of the transfer wheel between a blowing wheel and a discharge section. Here, the transfer wheels have several support arms that carry handling devices. The transfer devices or transfer wheels are arranged on the input and output sides of a forming machine and between different container handling machines to facilitate the transfer from a first container handling machine to a second container handling machine.The transfer device (transfer wheels) can also be arranged within a container treatment machine, for example, to transfer preforms or containers manufactured from them from one treatment station to the next (e.g., from a heating unit to a blow molding unit). It is also conceivable that these transfer wheels are equipped with a function beyond transport. For example, reject devices can be arranged on the transfer wheel to remove preforms or containers manufactured from them that have been identified as defective by inspection devices. Measuring devices can also be arranged on the transfer devices (transfer wheels) to control the treatment machine based on the measurements they perform. For example,Wall thickness measuring devices or temperature measuring devices or any other measuring devices that detect a property of the preform or the container produced from it, in order to supply the detected values ​​to a control unit for the purpose of machine control and / or for the purpose of forming process control.

[0022] The handling of preforms, as already described, is applied in two ways: firstly, in so-called two-stage processes, where the preforms are initially manufactured using injection molding, then temporarily stored, and only later conditioned with respect to their temperature and inflated into containers; and secondly, in so-called one-stage processes, where the preforms are appropriately temperature-conditioned and then inflated immediately after their injection molding and sufficient solidification. Transfer devices designed for suspended transport of the containers are known from DE102015121530A1. These devices feature a plurality of container supports (container holders), for example in the form of grippers, clamps, etc., around the circumference of a star-wheel-like rotor or transport wheel that rotates around a vertical machine axis.on, namely for the hanging support of the containers, in particular the containers designed as bottles on a flange (neck ring) that is formed on the bottle neck.

[0023] The present disclosure provides a transfer device for the contamination-free transport of containers. The containers are advantageously made of a thermoplastic material. The transfer device can be arranged, for example, in the area of ​​a device for handling containers, such as a forming machine, e.g., a blow molding machine or stretch blow molding machine for forming or blow molding containers. However, the transfer device can also be used in other devices for handling containers. The primary feature of the transfer device described here is its ability to prevent the contamination or recontamination of the containers with microorganisms (including viruses) or dirt particles. The transfer device according to the invention facilitates the transport of the containers under the most sterile and clean conditions possible, i.e.,The transfer device makes it possible, in particular, to prevent the ingress of foreign particles, dirt, microorganisms and / or germs in general into the sterile containers.

[0024] The transfer device can comprise a transport unit movably mounted on a base, with several container carriers arranged circumferentially for holding and transporting the containers along a transport path. The transfer device generally comprises a transport unit (e.g., transport wheel, rotor, star) movably mounted on a (fixed) base (support structure). The base is designed to support the entire transfer device, and in particular the transport unit. The base can be a plinth, a post, a column, a pipe, or other, possibly more complex, structures. The transport unit can preferably be rotatably mounted on or around a central axis of rotation on or about a central axis of rotation. The transport unit can preferably be a transport wheel, a rotor, a star, or a rotor-like or...star-shaped arrangement of a plurality of container carriers with support arms (gripping arms, grippers) or support devices for containers.

[0025] The base of the transfer device can include one or more cam controls or cams designed to control the transport device or container carriers, in particular the transport device's gripping arms and / or grippers. The cams are rigidly connected to the base and therefore stationary with respect to any transport movement. The cams can be arranged above, below, and / or laterally to the moving transport device or container carriers. Regardless of whether the cam control is located on the top of the transfer device or within the base or support structure of the transfer device, there can generally be one or more cams or cam controls. For example, a first cam for pivoting the transport device's gripping arms, a second for telescoping the gripping arms, and a third for opening and closing the grippers on the gripping arms.

[0026] In another embodiment, instead of the mechanical or electromechanical cams or cam controls, individual separate drives can be provided, through which movements such as swiveling, telescoping and opening and closing are carried out.

[0027] Instead of grippers, the transport device or transfer device can also have transport mandrels.

[0028] Regardless of its specific design, the transport device advantageously comprises a plurality of container carriers (e.g., grippers, receiving devices, receiving recesses, clamps, mandrels) arranged circumferentially around its circumference. These carriers are designed to hold and transport the containers along a transport path around the transport device (or transfer device). The transfer device advantageously includes an extraction hood. The extraction hood can comprise an air outlet for removing air from inside the hood and an air intake opening, separate from the air outlet, for drawing air from outside the hood.

[0029] The extraction hood can advantageously include a casing that encloses the extraction hood except for the air discharge opening and air intake opening.

[0030] The extraction hood can advantageously be oriented with the air intake opening facing the transport device. The air outlet opening and the air intake opening can also be located on opposite sides of the extraction hood. The air outlet opening can also be located on the side of the extraction hood.

[0031] The air outlet can generally be designed to be connected to an air extraction system to draw air from inside the extraction hood in such a way that a suction flow is created, drawing loose foreign particles, dirt, germs, and / or microorganisms through the air intake towards the air outlet and preventing them from reaching the containers. During operation, particles can detach due to abrasion or mechanical movement, for example, and then become airborne. The suction flow is intended to remove these airborne particles, germs, etc., preventing them from being carried by the air currents into the containers.

[0032] The air intake opening can be surrounded by a circumferential edge of the casing (e.g., a lower one). The lower circumferential edge can extend, at least in sections, as close as possible to the transport device, with the transport device or the container carriers of the transport device moving along a transport path.

[0033] The extraction hood can be attached to a stationary part of the transfer device. The air extraction device can be attached to, or attachable to, a machine housing of the forming machine. The casing of the extraction hood can be, for example, chimney-shaped, funnel-shaped, polyhedral, conical, or bell-shaped, but also tubular or cylindrical.

[0034] The use of the extraction hood described here is particularly advantageous in conjunction with treatment stations that are supplied with filtered air. For example, a simple machine housing can be arranged around one or more treatment stations. The housing or the treatment stations can then be supplied with filtered air from above, which flows downwards and escapes into the environment outside the machine enclosure. The machine housing is not airtight and is open at the bottom. The airflow rate can be high; for example, the air volume flow per hour can be greater than eighty times the room volume. In such a configuration, the extraction hoods are positioned above the transfer stations / transfer devices.This way, any particles that become loose are extracted and do not reach the containers. Alternatively or in addition to the extraction hood, the transfer device can have a shielding wall (or cover), which is described in more detail below.

[0035] Advantageously, the transport device also includes a shielding wall running along the transport path of the containers around the transport system. The shielding wall can be made of plastic, metal, or a combination of these and other materials. The shielding wall can also be multi-part, with the individual parts arranged seamlessly next to each other. In this case, one could also speak of several shielding walls forming a complete shielding wall, or of the elements of a single shielding wall.

[0036] The shielding wall extends vertically from top to bottom or bottom to top and reaches from a lower edge of the transport device at least to the lower edge of the longest container being transported on the transfer device. It is generally assumed that the containers are oriented vertically during transport. In an advantageous embodiment, the shielding wall (or shielding walls or sections of the shielding wall in a multi-part design) can be rigidly and stationaryly connected to the base at its upper surface, preventing movement of the transport device or the containers along the transport path. The shielding wall or walls can then, for example, extend from top to bottom to a lower edge of the containers being transported (finished containers or preforms).Seals can then be arranged between the upper edge of the transport device and the shielding wall or the elements of the shielding wall; these seals should be as impermeable as possible to dirt and microorganisms (including viruses).

[0037] The shielding wall can also extend from the lower edge of the transport device to the floor and can advantageously be permanently, i.e., fixedly, connected to the base and / or the floor. In this context, the term "floor" refers to a support or the plane of a support on which the transfer device, in particular its base, is permanently installed. This floor does not necessarily have to be completely level. It could also be an additional floor that is installed or erected for this purpose (intermediate floor, platform floor).

[0038] The shielding wall, or its sections or parts, can extend from top to bottom and be firmly connected to the transport device, moving with it. Advantageously, the shielding wall always extends at least to the bottom edge of the containers or preforms along their transport path on the transfer device. If the shielding wall is longer, a gap can remain between the bottom and the bottom edge of the shielding wall. A suitable seal (also called a labyrinth seal) can be located there.

[0039] Furthermore, the containers can advantageously be oriented with the opening facing upwards during transport. If the transport device (e.g., transport wheel) and / or the container supports are located above the containers, the shielding wall is preferably arranged at least predominantly below the transport device. The shielding wall can advantageously be arranged between the base of the transfer device and the containers, and below the transport device. The shielding wall can preferably be spaced apart from both the transfer device (e.g., its base or its axis of rotation) and the transport path or the containers along their route. The shielding wall can advantageously extend at least partially or completely along the transport path of the containers.

[0040] The shielding wall can be designed in such a way that it prevents particles from detaching from the transfer device and reaching the containers in an area covered by the shielding wall, thus preventing them from becoming contaminated.

[0041] In a further embodiment, the shielding wall can move along with the containers on the transfer device in one transport direction (e.g., the direction of rotation or linear travel). This ensures continuous lateral coverage of the containers from the transfer device.

[0042] If the transfer device includes a transport element designed as a transport wheel, rotor, star wheel, or similar, the movable bearing can allow rotation around an axis of rotation. In this case, the transport wheel (or rotor or star wheel) can, for example, have container carriers in the form of grippers or receiving devices distributed at circumferential intervals along the circumference of the transport wheel (or rotor, star wheel). These container carriers or holding devices serve, as previously explained, to hold and transport the containers through the transfer device and along a transport path. The transport path along the transfer device is a section along the circumference of the transport element (e.g., transport wheel), typically a portion of the entire circumference of the transport device. The transport path along the transfer device can, in principle, have any possible shape.For example, in a transfer device with a staggered division, the transport path is not circular but follows a curved track. The shielding wall can follow this curved track. If the transport device has a round or circular circumference, or if the container carriers lie on such a circular circumference during transport, then the transport path of the containers along the transfer device with such a transport device is a circle or a segment of a circle (also called a partial circumference). In this case, the shielding wall can be cylindrical and have at least partially segmented sections with straight, curved, round, or even circular cross-sections. The shielding wall, or the entirety of its sections or segments, can partially or even completely enclose the base of the transfer device, particularly in the case of a stationary shielding wall, i.e., by 360°.In the case of a stationary shielding wall that does not move with the transport device, the shielding wall can enclose the transfer device or its base by up to 170°, 180°, 200°, or 270°. This applies to rotary transfer devices and linear transfer devices.

[0043] The shielding wall (or its segments) can be attached at its upper edge (or upper end) to a circumference of the transport device, in particular to the circumference of a transport wheel (rotor, star wheel). The shielding wall can then advantageously be attached at its upper edge to a lower part (or lower edge) of the movable transport device or wheel. The shielding wall or its segments can then be movably in contact with the ground by means of seals.

[0044] The base of the transfer device can generally comprise one or more columns or posts on which one or more transport devices can be arranged. In the case of rotation of the transport device, the axis of rotation can pass through a column or coincide with the longitudinal axis of a column or post.

[0045] It is also conceivable that the transfer device includes a shaft to which the transport mechanism is attached. In this case, the axis of rotation can coincide with the longitudinal axis of the shaft. A drive, in particular a servo drive or servo motor, can be located in the base to drive the transport mechanism. The shielding wall can be positioned between the base and the containers in all configurations. In this case, the shielding wall can be spaced apart from both the containers and the base.

[0046] The present disclosure also provides a device for treating containers, in particular a forming machine, e.g., a stretch forming machine, blow molding machine, or stretch blow molding machine. The device for treating containers can advantageously comprise a transfer device according to the present disclosure and a device for applying sterilizing fluid to the containers. The device for treating containers can advantageously have further embodiments, such as predetermined flows of sterile air or other measures to support the transport of the containers with the lowest possible contamination.

[0047] The present disclosure also provides a method and a device for the contamination-free treatment of containers in a treatment machine.

[0048] The treatment machine can be enclosed within a machine housing. Beneath the machine housing is a floor, such as a factory floor. On this floor, one or more support platforms can be arranged, which support the equipment and components of the treatment machine. The factory floor itself can also serve as the support platform. The equipment and components are spanned and enclosed by the machine housing. However, the machine housing does not seal completely against the floor or the support platforms. Therefore, air from the factory floor can potentially enter the machine housing from below. Thus, the machine housing does not necessarily have to be designed as a cleanroom enclosure.

[0049] According to the present invention, the treatment machine can have at least one section and advantageously several sections. The sections can be enclosed by the machine housing and by additional partitions. Typically, the machine housing, or its walls, is airtight, or not completely airtight or impermeable, or at least less airtight or impermeable than the partitions.

[0050] According to the present disclosure, inner and outer sections are formed in or along the sections by attaching respective partitions, in which certain advantageous flow conditions are generated by supplying or removing sterile air. These are preferably vertical displacement flows (from top to bottom) or preferably vertical suction flows (from bottom to top), at least in the area of ​​the containers. According to the present disclosure, the partitions are also used to separate individual sections from one another. For better differentiation, these partitions are assigned to the sections in the claims and named after these sections.

[0051] Sterile air can be provided, for example, by using filters in air ducts. Such filters are well-known; these include, for example, HEPA filters or filter cartridges.

[0052] The sections advantageously contain various devices and equipment of the treatment machine. These can include treatment devices for the containers, such as a treatment wheel (e.g., a blow wheel, stretch blow device), heating devices, devices for sterilizing, filling, labeling or inspecting, and others, but also transfer devices.

[0053] The sections are connected in a specific sequence via a container transport path. In other words, containers can be transported from one section to an adjacent section. Therefore, certain facilities (e.g., transport equipment) can extend from one section to another.

[0054] The individual sections are described below in ascending numerical order. This numerical order does not correspond to the order in which the containers pass through the sections along the transport path. Rather, the section numbers refer to the order in which they are mentioned within this disclosure.

[0055] In a first section of the processing machine, a processing unit for containers can generally be arranged. This processing unit can be, for example, a stretch blow molding unit for forming preforms into finished containers. Advantageously, partition walls can be arranged around the processing unit, at least in sections. These partition walls, referred to as the partition walls of the first section, form an inner section surrounded or enclosed by the partition walls, referred to as the inner section of the first section. This inner section may, but need not, be completely enclosed by the partition walls of the first section.

[0056] An air supply device for sterile air can advantageously be connected to the inner section. Sterile air can be supplied or flowed via the air supply device, for example, laterally (above the containers) and / or from above (above the containers), preferably in a vertical direction from top to bottom within the inner section enclosed by the partitions. This creates a first inner air displacement section. An air displacement flow prevails within this inner air displacement section. The treatment device is advantageously located within this air displacement section or is contained within it. The inner air displacement section should be created at least in the area of ​​the containers.

[0057] The partitions are advantageously dimensioned in height so that they extend vertically above and below the containers (along the transport path through the treatment facility). The partitions can be flush with the machine housing at the top, meaning they are closed at the top.

[0058] Below the partition walls, i.e., between the lower edge of the partition walls and a floor (support floor, floor panels, etc.), at least one gap remains. The partition walls therefore do not flush with the floor(s), but remain spaced below the floor.

[0059] Preferably, the partitions are located within the area enclosed by the machine housing. Advantageously, the partitions can be spaced at least section by section from the machine housing on the outward side, i.e., towards the machine housing. This creates spaces or channels between one or more partitions and the walls of the machine housing, which are referred to as external extraction channels, in this case, external extraction channels of the first section.

[0060] Advantageously, these external extraction ducts (e.g., through the partition walls) are closed laterally and at the top. These external extraction ducts are connected to an extraction unit. The extraction unit can be connected to the extraction ducts laterally and / or from above. Air is extracted laterally and / or from above in the extraction ducts of the first section by means of an extraction unit. This results in a suction flow within the extraction ducts, which is preferably vertical.

[0061] The partitions and / or the suction channels can surround the treatment device to a predominant extent (advantageously by more than 180° circumferential angle in the circumferential direction of the treatment device).

[0062] In one embodiment, the treatment device can be surrounded by suction channels on at least three sides. The partition walls extend at least partially along a transport path of the containers around the treatment device.

[0063] Overall, the introduction of sterile air into the first inner air displacement section advantageously creates a vertical displacement airflow (air displacement flow) from top to bottom, at least in the area of ​​the containers. The extraction of air from the outer extraction channels of the first section creates a preferably vertical suction airflow (suction flow) of air in the extraction channels from bottom to top. This advantageously results in air flowing from the first inner air displacement section (e.g., in a radial direction) to the outer extraction channel(s) of the first section, passing under the partition walls of the first section.

[0064] This advantageously prevents the containers from coming into contact with contaminated air as they pass through the treatment unit in the first section, since the containers only come into contact with sterile air from the air supply systems. This air is then extracted radially outwards through the extraction ducts of the first section. The air thus flows in from top to bottom, at least in the area of ​​the containers, flows radially outwards below the partition walls, and is extracted and discharged radially upwards and outwards from the treatment unit. This creates an advantageous airflow of sterile air, first from above towards the containers and then away from the containers downwards and radially outwards.

[0065] The directions of the airflows are ideally described in this disclosure as vertical from top to bottom or bottom to top. Naturally, the movement of the equipment and devices within the sections will generate turbulence in some areas. The strength of the airflows is advantageously adjusted to these effects. This also applies to the statements that the flow is outward or radially outward. This too is an idealization, but one that accurately describes the general flow characteristics.

[0066] The treatment machine can include a second section that at least partially accommodates a first transfer device, in particular a feed wheel for containers. A portion of the first transfer device can project from the second section and extend into the first section, which can be advantageous for transporting containers from the second to the first section. Partitions (hereinafter referred to as partitions of the second section) can be arranged in and / or along the second section, extending at least partially around the transfer device. This forms an inner section, hereinafter referred to as the inner section of the second section, which is at least partially enclosed by the partitions of the second section. An air supply device for sterile air can be connected laterally and / or from above to this inner section of the second section.By means of the air supply device, sterile air can be supplied within the inner section of the second section enclosed by the partition walls of the second section, in such a way that a second inner air displacement section is formed there, which at least partially surrounds the first transfer device.

[0067] A portion of the partition walls of the second section can be spaced at least section by section away from the machine housing, preferably inwards, so that at least one outer extraction channel of the second section is formed between the machine housing and the partition walls of the second section, wherein the extraction channel of the second section is closed laterally and upwards. The machine housing is advantageously located radially outside, or the partition walls are advantageously located within the area enclosed by the machine housing.

[0068] The partition walls of the second section can advantageously extend vertically above and below the containers without being flush with the floor, particularly the floor where the container is mounted. At the top, the partition walls of the second section can be flush with the machine housing, i.e., closed at the top.

[0069] By introducing sterile air into the second inner air displacement section, a displacement flow, preferably vertical at least in the area of ​​the containers, is generated. An air extraction device can then be connected laterally and / or from above to the outer extraction duct of the second section, through which air is extracted from this outer extraction duct, so that a suction flow, preferably vertical and directed from bottom to top, is formed in the extraction duct, and air from the first inner air displacement section flows radially towards the outer extraction duct of the second section, passing under the partition walls of the second section.

[0070] Advantageously, partition walls are also arranged between the first section and the second section, hereinafter also referred to as partition walls of the second section, which do not close to the floor and additionally have openings through which the containers can be transported from the second section to the first section.

[0071] In the second inner air displacement section of the second section, further transfer devices may be at least partially arranged, which are designed to transport containers to other sections or away from other sections.

[0072] The processing machine can include a third section that at least partially accommodates a second transfer device, in particular a discharge wheel for containers. Part of the second transfer device can project from the third section and extend into the first section, which can be advantageous for transporting containers from the first to the third section.

[0073] In the third section, partitions (third-section partitions) can be arranged that extend at least partially around the transfer device. This forms an inner section of the third section that is at least partially enclosed by the third-section partitions. An air supply device for sterile air can be connected to this inner section laterally and / or from above. Sterile air can preferably be supplied from top to bottom within the inner section of the third section enclosed by the third-section partitions by means of the air supply device, so that a third inner air displacement section is formed there, which at least partially surrounds the first transfer device.

[0074] A portion of the partition walls of the third section can be spaced at least section by section away from the machine housing, preferably inwards, so that at least one outer extraction channel of the third section is formed between the machine housing and the partition walls of the third section, this extraction channel being advantageously closed laterally and upwards.

[0075] The partition walls of the third section can advantageously extend vertically above and below the containers without being flush with the floor, particularly the floor where the container is mounted. At the top, the partition walls can be flush with the machine housing, i.e., closed at the top.

[0076] By introducing sterile air into the third inner air displacement section, a (largely) vertical displacement flow is generated, at least in the area of ​​the containers.

[0077] An air extraction device can then be connected laterally and / or from above to the outer extraction duct of the third section, through which air is extracted from this outer extraction duct, so that a suction flow, preferably vertical from bottom to top, is formed in the extraction duct and air from the third inner air displacement section flows in a radial direction to the outer extraction duct of the third section under the partition walls of the third section.

[0078] Advantageously, partition walls (of the third section) are also arranged between the first and third sections. These partition walls do not close to the floor and additionally have openings through which the containers can be transported from the first to the third section. Further transfer devices, at least partially arranged, can be located in the third inner air displacement section of the third section. These devices are designed to transport containers to or from other sections.

[0079] The transfer devices of the second and third sections can advantageously have extraction hoods and shielding walls to prevent detached foreign particles, dirt or germs from reaching the containers.

[0080] The treatment machine can include a fourth section in which a heating device is arranged. Partitions (hereinafter: partitions of the fourth section) can be arranged between the fourth section and the second section, these partitions of the fourth section being flush with the bottom and having openings through which the containers can be transported from the fourth section to the second section and vice versa. A transport device, preferably a transport device of the heating device, can extend from the fourth section to the second section for this purpose.

[0081] An air extraction device can be connected to the fourth section from above in order to extract air from the fourth section, so that a vertical suction flow from bottom to top is established in the fourth section, which flows through the heating device.

[0082] Air can also flow from the second section (displacement flow) to the fourth section (suction flow) through the openings in the partition walls of the fourth section.

[0083] Air filters (e.g., HEPA filters) can be located below the heating unit. These filters filter the air drawn in through the floor or sides before it flows through the heating unit. This air also serves a cooling purpose.

[0084] The processing machine can include a fifth section in which further transfer devices are arranged. First, partition walls (hereinafter: partition walls of the fourth section) can be arranged between the fifth section and the second section. These partition walls are flush with the floor and have openings (for a transport device) through which the containers can be transported from the fifth section to the second section. A continuous floor slab is located below the preforms or below the partition walls, preventing the intake of ambient air. This floor slab can take the form of an additional, recessed intermediate floor.

[0085] Within the fifth section, further partition walls of the fifth section can be arranged, extending around the further transfer devices, wherein these partition walls of the fifth section can be spaced at least section by section from the machine housing, preferably inwards. Advantageously, the partition walls of the fifth section form one or more inner sections of the fifth section.

[0086] In the fifth section, the partition walls can also extend vertically above and below the containers on their transport path, with these partition walls being flush with the floor, particularly the intermediate floor. At the top, the partition walls can be flush with the machine housing, i.e., closed at the top.

[0087] The inner sections of the fifth section can be connected to an air extraction device from above. Air can then be extracted from these inner sections by means of the air extraction device, thus creating internal suction flow sections in which a vertical suction flow from bottom to top prevails.

[0088] In the fifth section, the partitions are also advantageously located within an area enclosed by the machine housing. Here, the partitions can form a closed chamber, which is described below as the sixth section. This sixth section can be a sterilization unit (sterilization chamber). Below the fifth and sixth sections is a solid, impermeable base plate or an additional intermediate floor, with which the partitions seal at the bottom.

[0089] The treatment machine may include a sixth section in which a sterilization fluid application device (or container sterilization device) is arranged, with which the containers are supplied with the sterilization fluid.

[0090] According to one aspect, the sixth section within the fifth section can be formed by arranging partitions (hereinafter: partitions of the sixth section, sterilization chamber) around the sterilizing fluid supply unit. Here, too, the partitions of the sixth section can extend above and below the containers. These partitions are flush with the floor or airtight intermediate floor. At the top, the partitions can enclose the sixth section with the machine housing, thus creating a closed top. An air supply unit can be connected to the sixth section from above, such that a vertical displacement flow from top to bottom is generated within the sixth section by means of the air supply unit.

[0091] The treatment machine may include a seventh section, which, for example, partially surrounds two further transfer devices, with the seventh section being located downstream (with respect to the transport path of the containers) of the third section. At least one transfer device may extend from the third section into the seventh section or be located partly in the third and partly in the seventh section.

[0092] Additional partitions (hereinafter: partitions of the seventh section) can advantageously be arranged between the seventh section and the third section. These partitions of the seventh section are flush with the floor and also have openings (for the transport device) through which the containers can be transported from the third section to the seventh section using the transport device. The seventh section can advantageously be located between a container handling unit, such as a stretch blow molding unit, and a filling unit (filler). Particularly high sterility requirements prevail in the filling unit. Therefore, the partitions in the seventh section are tightly sealed to the floor, and the floor is impermeable to the ambient air or outside air. This also applies to the other surrounding walls of the seventh section.

[0093] In one embodiment, an air extraction device can be connected to the seventh section from above or below. Air can thus be extracted from the seventh section by means of the air extraction device, creating a suction flow within the seventh section, with the air also flowing from the third section to the seventh section through the openings. The seventh section can be understood as an airlock (airlock) with respect to the third section.

[0094] The treatment machine may include an eighth section in which at least one feeding device for containers, in particular preforms, is arranged.

[0095] The eighth section can be arranged upstream (with respect to the transport direction of the containers) of the fifth section. Partition walls (hereinafter referred to as partition walls of the eighth section) can advantageously be arranged between the eighth section and the fifth section, these partition walls of the eighth section additionally having openings through which the containers can be transported from the eighth section to the fifth section.

[0096] An air supply device can be connected to or installed on the eighth section from above, below, or laterally to supply air into the eighth section, thus creating a displacement flow within it. The eighth section is designed so that an air cushion (overpressure, displacement flow) forms there, and the air flows both towards the fifth section (i.e., in the conveying direction of the preforms) and against the conveying direction of the preforms. This creates an air cushion in the eighth section that prevents the inflow of ambient air.

[0097] The present disclosure also provides a device for the contamination-free treatment of containers, which is also referred to as a treatment machine. The device or treatment machine can be surrounded by a machine housing positioned above one or more support floors.

[0098] The treatment machine (e.g. stretch blow molding machine) can comprise at least one first section in which a treatment device, in particular a treatment wheel (e.g. a stretch blow molding wheel), is arranged.

[0099] The device comprises partition walls that are arranged at least section by section around the treatment device in order to form an inner section of the first section that is at least partially surrounded by these partition walls of the first section.

[0100] The device may include a sterile air supply unit connected laterally and / or from above to the inner section of the first section and configured to supply sterile air within the inner section enclosed by the partitions of the first section. By supplying sterile air to the inner section of the first section, a first inner air displacement section is formed, surrounding the treatment device.

[0101] The partitions of the first section can be spaced at least partially away from the machine housing, preferably inwards, so that external extraction channels of the first section are formed between the machine housing and the partitions of the first section. These channels surround the treatment device to a predominant extent (e.g., by more than 180° circumferential angle). The partitions of the first section can extend at least partially along a transport path of the containers around the treatment device and project vertically above and below the containers without being flush with the base, in particular the installation base. Preferably, the partitions are located within an area enclosed by the machine housing.

[0102] The suction channels of the first section are advantageously closed laterally and at the top. By introducing sterile air into the first inner air displacement section, a vertical displacement flow is created, at least in the area of ​​the containers.

[0103] The device can include an air extraction device connected laterally and / or from above to the outer extraction ducts of the first section and configured to extract air from these outer extraction ducts, thus creating a suction flow, preferably directed from bottom to top, in the extraction ducts of the first section. This allows air to flow radially from the first inner air displacement section to the outer extraction ducts of the first section, passing under the partition walls of the first section.

[0104] As previously described, suction flows and displacement flows prevail in each section, and these can have different sizes / strengths depending on the section or segment.

[0105] In the first, second, and third inner displacement sections of the first to third sections, individually adjustable displacement flows can prevail. Similarly, individually adjustable suction flow rates can prevail in the extraction channels. The suction flows in the fourth and seventh sections can also be individually configured.

[0106] In the fifth section, a suction flow of a specific magnitude can also be established in the outer suction flow section (i.e., outside the partitions). In the sixth section, which can be a subsection of the fifth, a displacement flow of a specific magnitude also prevails, whereby the magnitude of the displacement flow in the sixth section can be smaller than that in the second section. In the inner suction flow sections of the fifth section, a suction flow of a specific magnitude also prevails, which in turn can be larger than the suction flow outside the partitions. A displacement flow of a specific magnitude can also prevail in the eighth section, i.e., in the area of ​​the inlet just before entering the fifth section. The aforementioned flow characteristics ensure preferred airflow directions by creating defined pressure gradients.The pressure should be highest inside the treatment unit (treatment wheel) and decrease towards the outside. This causes the sterile air to move from the inside out, away from the treatment unit. This keeps the area in the first, second, and third sections as free of microorganisms as possible.

[0107] Overall, the present disclosure provides a method and a device in which inner displacement sections are surrounded by outer suction sections. Furthermore, sections such as the first, second, third, and sixth, which have an inner displacement flow, are surrounded by sections such as the fourth, seventh, and fifth, which have a suction flow. This arrangement and this configuration of the respective flow directions enables a highly contamination-free transport and treatment of the containers B within the treatment machine.

[0108] The partitions can be advantageously airtight and rigid. They can be made of plastic or metal, or a combination of these materials. Particularly advantageous is the use of transparent plastic for the partitions, at least in certain sections or areas within sections. This provides a better overview, as the partitions are transparent, at least partially (or entirely). Transparent plastic partitions can be used in particular in the first, second, and third sections. There, they can be advantageously positioned between the sections.

[0109] In one possible embodiment, the present disclosure provides a highly contamination-free transport path along the sections. Along this contamination-free transport path, the preforms and containers are transported downstream as follows. As part of a feed system, e.g., designed as a feed rail or pneumatic conveyor, the preforms first pass through the eighth section. From there, they reach the fifth section, through which they are conveyed by means of transfer devices (transfer wheels). The sixth section is located within the fifth section (and separated from it by partitions) and is traversed by the containers in the area of ​​the transfer device. From the last transfer device of the fifth section, the containers reach the second section and from there a transfer device of the second section.In the second section, the containers are transferred to a transport device that extends from the second section to the fourth section and transports the containers through the heating unit in the fourth section. From the fourth section and the heating unit located there, the containers return to the second section and are transferred to the first transfer device (transfer wheel, feed wheel). Along (by means of) the first transfer device, the containers reach the first section, where they are transferred from the first transfer device to the processing unit (e.g., forming unit). After passing through the processing unit, the now fully formed containers are transferred within the first section to the second transfer device (transfer wheel, discharge wheel) and travel along the second transfer device to the third section.In the third section, the containers are transferred from the second transfer device to another transfer device (transfer wheel). Along this transfer device, the containers reach the seventh section. In the seventh section, they are transferred from one transfer device to the next (transfer wheel). Along this further transfer device, the containers reach the ninth section. Here, the treatment may end, or further treatment of the containers may follow.

[0110] If the sterilization of the preforms is to take place only after the fourth section, then the fifth and sixth sections are located between the second and first sections. All previously described devices that can be used for transferring containers are equipped with suction hoods or partitions.

[0111] The disclosure is explained in more detail below with reference to preferred embodiments and the accompanying figures. The drawings are not necessarily to scale. In the figures, identical or essentially functionally equivalent or similar elements are usually designated by the same reference numerals. They show:

[0112] Fig. 1 is a highly simplified schematic lateral sectional view of a transfer device according to an exemplary embodiment.

[0113] Fig. 2 shows a highly simplified schematic lateral sectional view of a transfer device according to an exemplary embodiment.

[0114] Fig. 3 shows a highly simplified schematic perspective view of a transfer device according to an exemplary embodiment and

[0115] Fig. 4 shows a highly simplified schematic perspective view of a transfer device according to a further embodiment.

[0116] Fig. 5 shows a simplified schematic top view of a device for treating containers under sterile conditions, using the example of a treatment device for producing finished containers from preforms.

[0117] Fig. 6 shows a simplified schematic side view of the device for treating containers under sterile conditions from Fig. 5, and

[0118] Fig. 7 shows a further simplified schematic side view of the device for treating containers under sterile conditions from Fig. 5.

[0119] Fig. 1 is a highly simplified schematic sectional view of a transfer device T according to an exemplary embodiment. The transfer device T is designed as a transfer wheel. A base, mounting base, or plinth 113 is located below the transfer device T. The transfer device T comprises a transport unit 107, which is designed as a transport wheel 107 rotatably mounted on a base 112 (also called a support structure) about an axis of rotation 109. The base 112 can be column- or tube-like, i.e., as tube sections or tube elements (or column or post). The base 112 can have a cam control or one or more cams for controlling the transport unit 107 or container carrier 108, such as gripper arms and grippers of the transport unit 107. The cams can be arranged above or below the transport unit 107.The curves are rigidly connected to the base 112 and thus also to the floor 113, and are therefore stationary. The base 112 could also generally include a shaft that rotates with the transport wheel 107. Accordingly, the base 112 could be rotatably mounted on the floor 113. The transfer device T is rotaryally driven, for example, by belts or chains or an integrated drive (servo motor), which are not shown. Other possible embodiments consist of individual electromagnetic drives (one drive for each transport element) that move independently of each other on guideways. A transfer device T according to this embodiment can, for example, be used as a singulation wheel, feed wheel, or discharge wheel in a device for handling containers 1, with use as a feed wheel or discharge wheel being preferred, since the containers B may already be sterilized in this area.

[0120] An extraction device or extraction hood or extraction bell 160 is advantageously located above the transport device 107.

[0121] The extraction device or extraction hood 160 can be at least substantially completely enclosed and have a lower circumferential rim 161, wherein the lower circumferential rim 161 extends at least in sections as close as possible to the transport path. Furthermore, the extraction device 160 can have an air discharge opening 162 and an air intake opening 163. Except for the two openings 162 and 163, the extraction device can have or be enclosed by a casing 164.

[0122] The extraction hood 160 can be set up to be connected to an air extraction device 8 in order to extract air 15 from the interior 165 of the extraction hood 160 in such a way that already detached foreign particles, dirt, germs and / or microorganisms are extracted and do not reach the containers B.

[0123] The extraction hood 161 can be attached to a stationary part of the transfer device T. This stationary part can, for example, be the base 112 of the transfer device. In another embodiment, the extraction hood 160 can be attached outside the transfer device T, for example, at least indirectly to a machine housing 11.

[0124] Fig. 2 is a highly simplified schematic lateral sectional view of a transfer device T according to an embodiment that corresponds in many elements and features to the embodiment of Figure 1. The transfer device T is designed as a transfer wheel. A base, mounting base, or plinth 113 is located below the transfer device T. The transfer device T comprises a transport unit 107, which is designed as a transport wheel 107 rotatably mounted about an axis of rotation 109 on a base 112 (also called a support structure). The base 112 can be column- or tube-like, i.e., as tube sections or tube elements (or column or post). The base 112 can have a cam control or one or more cams for controlling the transport unit 107 or container carrier 108, such as gripper arms and grippers of the transport unit 107.The curves can be arranged above or below the transport device 107. The curves are rigidly connected to the base 112 and thus also to the floor 113, and are therefore stationary. The base 112 could generally also include a shaft that rotates with the transport wheel 107. Accordingly, the base 112 could be rotatably mounted on the floor 113. The transfer device T is rotaryally driven, e.g., by belts or chains or an integrated drive (servo motor), which are not shown. Other possible embodiments consist of individual electromagnetic drives (one drive for each transport element) that move independently of each other on guideways. In this highly simplified representation, the transport wheel 107 has an upper part 107-1 and a lower part 107-2.Between the upper part 107-1 and the lower part 107-2 of the transport wheel 107, a plurality of container carriers 108 are arranged along the circumference, with only two container carriers 108 designed as grippers being shown here as an example. Depending on the design, the upper part 107-1 or the lower part 107-2 could include one or more cams for controlling the container carriers 108. Accordingly, the upper part 107-1 or the lower part 107-2 could be stationary or move along with the container carriers 108.

[0125] Also for illustrative purposes only, a finished container B,3 is shown on the left (dashed line) and a preform B,2 on the right (dashed line). The transfer device T will normally transport only one type of container B. Containers B,2 and B,3 each have a mouth area 103, a shaft 104, a base (cup) 105, and a neck ring 106. Due to the different sizes of containers B,2 and B,3, their respective lower edges or bottom ends 1130 are of different depths.

[0126] The transfer device T has a shielding wall 111 that extends vertically downwards from the transport device 107 with a lower edge 111-2 at least to below the lowest lower edge 1130 of the containers. An upper edge or upper end 111-1 of the shielding wall extends to the lower part 107-2 of the transport device 107. This lower part 107-2 can be stationary or move with the transport device 107 or the container carriers 108. Similarly, the shielding wall 111 can be stationary or move with the container carriers 108.

[0127] In another possible embodiment, the shielding wall 111 can also extend with a lower end / bottom edge 111-3 down to the floor 113. This second embodiment is shown with a dashed line with respect to the shielding wall 111. In this second embodiment, i.e., when the shielding wall 111 extends with its lower edge 111-3 down to the floor 113, it can be fixed to the floor 113 and thus be stationary relative to the transport device 107 or the container supports 108 and the containers B,2 and B,3. In this case, the shielding wall 111 advantageously extends from the floor 113 (surface of the floor 113) to a lower edge of the lower part 107-2 of the transport device 107.Depending on whether the lower part 107-2 is stationary or movable, a fixed or movable seal can be arranged between the shielding wall 111 and the lower edge of the lower part 107-2 of the transport device 107, which in the second case allows movement of the transprotein direction 107 relative to the shielding wall 111.

[0128] In all cases, the shielding wall 111 (in the vertical direction) can extend with a lower end 111-2 at least to just below the longest container B,2 / B,3 or even extend beyond it. In this second configuration as well, the shielding wall 111 can extend with a lower edge 111-3 to the floor 113.

[0129] In the case of a movable shielding wall 111, a gap will remain between the lower edge 111-3 and the surface of the floor 113, allowing movement between the shielding wall 111 and the floor 113. Appropriate seals can be located in this gap.

[0130] Fig. 3 is a highly simplified schematic perspective view of a transfer device T according to an embodiment. It corresponds to the embodiment of Fig. 2, in which the shielding wall 1111 does not extend to the floor 13, but merely projects downwards over the containers B2, B3. The shielding wall 111 can be stationary or move with the transport device 107 or the container carriers 108 and the containers B2 / B3. In this view, the cylindrical shape of the shielding wall 111 is recognizable due to the perspective view. However, the shielding wall 111 is not necessarily a cylinder or circular cylinder, as the illustration suggests. Rather, the shielding wall 111 can generally assume any possible shape. The shielding wall 111 could also be cylindrical, with the cross-section of the lateral surface being able to assume any possible shape.For example, the cross-section can be a polygon or have any curved or rounded sections. The shielding wall 111 can generally also consist of several different elements, sections, or segments, which should be joined together to form a sufficiently closed shielding wall 11. Furthermore, only finished containers B,3 are shown here as examples, which are carried by the grippers 108 above the neck ring 106. These could also be preforms B,2. During operation, the containers B,3 (or B,2) rotate around a partial circumference of the transport device 107, from a receiving position to a discharge position. The shielding wall 111 is located between the base.

[0131] The shielding wall 111 is located at the base 112 and a transport path for the containers B, and extends horizontally along this transport path. In this case, the shielding wall 111 completely encloses the base 112, which has the shape of a machine axis. In the case of a stationary shielding wall 111, it is advantageous to have the shielding wall 111 cover only a portion of the transport path. If the complete rotation (even with linear transfer devices) corresponds to 360°, the shielding wall could cover only the area in which the containers or preforms B, 2, 3 are guided by the transfer device. This could then be less than 360°, for example, only up to 170° or up to 200°.

[0132] In one embodiment, the shielding wall 111 can rotate with the transport device 107 (wheel, rotor, disc, star) and covers the containers B at all times relative to the transfer device T. Here, too, it can be seen that the lower end 111-2 of the shielding wall 111 extends beyond the lower end 1130 of the containers B. In an advantageous embodiment, however, the shielding wall 111 can be stationary relative to the transport device 107 (wheel, rotor, disc, star) and also covers the containers B at all times relative to the transfer device T. Here, too, the lower end 111-2 of the shielding wall 111 extends beyond the lower end 1130 of the containers B.

[0133] Fig. 4 is another highly simplified schematic perspective view of a transfer device T according to a further embodiment. Compared to the embodiments of Figures 2 and 3, the shielding wall 111 is now longer in the vertical direction downwards. In this embodiment, the shielding wall 111 can be connected either with its upper end 111-1 to the transport device 107 or the lower part 107-2 of the transport device 107 or to a stationary part of the base and / or with its lower end 111-2 to the floor.

[0134] 113 or the base 112. If the shielding wall 111 is attached to the transport device 107 (or its lower part 107-2) at its upper end 111-1, and the lower part 107-2 moves with the containers B, 2, 3, the shielding wall 111 could move or rotate with the transport device 107. Typically, in such a case, one or more curves would be arranged above the grippers and / or gripping arms of the container carrier 108.

[0135] In an alternative embodiment, the shielding wall 111 could be attached with a lower end 111-2 to the ground 113 (base, mounting floor or similar) and / or an upper end to a stationary part of the base 12 and could not rotate with the transport device 107.

[0136] In the present illustration, the shielding wall 111 extends significantly above the lower end 1130 (top, bottom 5) of the containers B,2 in a vertical direction. Preforms B,2 are shown here only as examples. Finished containers B,3 may also be shown here.

[0137] In this embodiment, the base 112 can comprise one or more curves or curve controls. If the curves are rigidly connected to the base 112 and / or the floor 113 (stationary), then the shielding wall 111 can be stationary. In one possible embodiment, the upper edge 111-1 of the shielding wall 111 could be attached to the underside of a curve (i.e., to the lower part 107-2).

[0138] In general, a seal could be provided at the upper edge 111-1 of the shielding wall 111, which allows relative movement between the transport device 107 (lower edge of the lower part 107-2), but is sufficiently tight / impermeable to dirt and microorganisms.

[0139] In the embodiments shown here, only two container supports 108 are depicted. In reality, a larger number of container supports 108 can be provided, arranged evenly around the circumference of the transport device 107. The transport device 107 can generally have the form of a wheel or a disc, but can also be linear. The transport device 107 can also be designed like a rotor or a star. In the latter two configurations, the container supports 108 can be located on or comprise support arms that extend radially outwards from the axis of rotation 109 in a star-shaped or rotor-like manner.

[0140] Figures 1 to 4 show transfer devices T for the contamination-free transport of containers B made of a thermoplastic material. The transfer devices T can be used in the area of ​​a device for handling containers, in particular a forming machine, e.g., a blow molding machine 1 for blow molding containers B. The transfer devices T have a transport device 107 (transport wheel) movably mounted on a base 112 (column, post) with several container supports 108 arranged circumferentially around its circumference for holding and transporting the containers B along a transport path.The transfer devices T each comprise an extraction hood 160 and a shielding wall 111, which extends horizontally along a transport path of the containers B on the transfer device T and vertically from top to bottom from the transport device 107 at least to the lower end 1130 of the longest container B being transported on the transfer device T. The extraction hood 160 is configured such that its circumferential lower edge 161 extends from top to the transport device 107 and complements the shielding wall 111. The shielding wall 111 is arranged between the base 112 and the containers B and is spaced apart from both the base 112 and the containers B (as they travel along their transport path).The respective shielding wall 111 is designed in such a way that it supports transport under sterile conditions in the area covered by the shielding wall 111, in particular preventing foreign particles, dirt and / or germs from detaching from the transfer device T and reaching the containers B.

[0141] The respective shielding walls 111 extend horizontally along the transport path of the containers B. In a special case, the shielding walls 111 can also extend parallel or partially parallel to the transport path. From above and above the transport device 107, this course of the shielding wall 111 is complemented by the extraction hood 160 or its lower edge 161. In one possible embodiment, the shielding walls 111 are also configured to move along with the containers B in one transport direction (during transport). In another embodiment, the shielding walls 111 are rigidly coupled to the base 112 and / or the bottom 113 or a surface of the bottom 113. In the present embodiments, the transfer device T is designed as a transfer wheel. The transfer wheel T has a transport device 107 rotatably mounted on the base 112 about a rotational axis 109, which is designed as a transport wheel, rotor, or star.The shielding wall 111 has, by way of example, a cylindrical shape, which, depending on the type of transfer device T, has a specific cross-section (shape of the cross-section) of its outer surface. The cross-section can vary in the vertical direction. The shielding wall can partially enclose the base 112, e.g., up to 170° or up to 200°, or completely (360°). The shielding wall 111 can consist of several elements, segments, or parts that form a closed cover. In some embodiments shown in Figures 2 and 3, the respective shielding wall 111 is attached at its upper end 111-1 to a circumference of the transfer device T, optionally to a circumference of the transport device 107. In particular, the respective shielding wall 111 is attached at its upper end 111-1 to a lower part 107-2 (or also the circumferential lower edge) of the transfer device T or the transport device 7.In an embodiment shown in Figures 2 and 4, the shielding wall 111 can also be attached to the base 113 or the base 112 at a lower end 111-3 or a lower edge 111-3. The base 112 has a support structure that can include one or more curves, which can be rigidly connected to the base and thus also rigidly connected to the base 113. The container supports 108 are designed as grippers or clamps, but can also be designed as transport mandrels or in other forms.

[0142] The transfer device T of the present disclosure is particularly suitable for use in a device for treating containers 1, especially in a forming machine, e.g., a forming machine, e.g., a blow molding machine or a stretch forming machine, e.g., a stretch blow molding machine. This device can thus comprise at least one transfer device T according to the present disclosure and advantageously a device for applying sterilizing fluid to the containers. Advantageously, the transfer device is located downstream of the sterilization of the containers B.

[0143] Fig. 5 is a simplified schematic top view of a device 1 (treatment machine) for treating containers under sterile conditions, using the example of a treatment machine 1 for producing finished containers 3 from preforms 2. Within the device 1, transfer devices T can advantageously be provided, which have extraction hoods 160 and / or shielding walls 111.

[0144] The treatment machine 1 is enclosed in a machine housing and comprises several sections. Sections S1, S2, S3, S4, S5, S6, S7, and S9 are shown here as examples. Other configurations may have fewer or more sections. The sections are partially defined by the machine housing and partially by partitions 9, as will be explained in detail later. Advantageously, the partitions are arranged within the area enclosed by the machine housing, or the machine housing 11 is located outside the partitions.

[0145] The preforms B,2 and containers B,3 are transported downstream along a contamination-free transport path as follows. Within a feeder 40, e.g., designed as a feed rail or pneumatic conveyor, the preforms B,2 first pass through the eighth section S8. From there, they reach the fifth section S5, through which they are conveyed by means of transfer devices 28, 27, 26, and 25 (T, transfer wheels). The sixth section S6 is located within the fifth section S5 and is traversed by the containers B,2 in the area of ​​transfer device 27 (T). From transfer device 25 (T) of the fifth section S5, the containers B,2 reach the second section S2 and there the transfer device 23 (T).In the second section S2, the containers B,2 are transferred to a transfer device (T) that extends from the second section S2 into the fourth section S4 and transports the containers B,2 through the heating device 20 in the fourth section S4. From the fourth section S4 and the heating device 20 located there, the containers B,2 return to the second section S2 and are transferred there to the first transfer device 16 (T, transfer wheel, feed wheel). On the transfer device 16 (T), the containers B,2 reach the first section S1 and are transferred there by the transfer device 16 (T) to the processing unit 4 (e.g., forming unit). After passing through the processing unit 4, the containers B,3 are transferred within the first section S1 to the second transfer device 17 (transfer wheel, discharge wheel) and reach the third section S3 along the second transfer device 17 (T).In the third section S3, the containers B,3 are transferred from the second transfer device 17 (T) to another transfer device 24 (T, transfer wheel). Along this transfer device 24 (T), the containers B,3 reach the seventh section S7. In the seventh section S7, the transfer from transfer device 24 (T) to transfer device 29 (T, transfer wheel) takes place. Along this transfer device 29 (T), the containers B,3 reach the ninth section S9. Further treatment of the containers B,3 can follow here. One, several, or all of the previously described transfer devices T can have an extraction hood 160 and / or one or more shielding walls 111.

[0146] At least sections S1 to S8 are individually arranged and configured according to the present disclosure such that specific vertical airflow conditions prevail in one or more of the respective sections S1 to S8. Advantageously, a distinction is made between (air) displacement flows 5 and (air) suction flows 6. It should be noted that the displacement flows 5 and suction flows 6 have different, individually adjustable magnitudes everywhere.

[0147] In at least one or more of the sections there is a displacement flow 5 and in at least one or more of the sections there is a suction flow 6.

[0148] Notwithstanding the previously described transport path that the containers B follow through the processing machine 1 from section to section, sections S1 to S8 are described again below in numerical order. In the first section S1, the containers B are processed. In this case, this involves the forming of preforms 2 made of thermoplastic material into finished containers 3, preferably and generally applicable using a stretching bar. Accordingly, a processing device (e.g., processing wheel, forming device, forming wheel, blowing wheel, blowing device, stretch forming, stretch blowing device) 4 is provided in the first section S1. The design and operation of such a processing device 4 are generally known.

[0149] An air supply device 7 for sterile air 18 is arranged above the first section S1, but at least above the containers B on their transport path. Sterile air 18 is introduced into the first section S1 from above (or also laterally) by means of the air supply device 7. The air supply device 7 should advantageously be located at least above the treatment unit 4 and also advantageously at least above the containers B on their transport path through the treatment unit.

[0150] In the first section S1, partition walls 9 are provided. These partition walls 9 of the first section surround the treatment unit 4 to a large extent. This forms an inner section. The air supply unit 7 introduces the sterile air 18 into this inner section of the first section S1. This creates a displacement flow 5 in the inner section, which is why this section is referred to as the first inner air displacement section 14-1 in the first section S1. In the inner air displacement section 14-1, there is a continuous airflow, which, at least in the area of ​​the containers, is directed vertically from top to bottom (from the ceiling to the floor).

[0151] The partitions 9 of the first section are designed such that they project above and below the containers B as they move through the first section S1. This ensures that the displacement flow 5 in the area of ​​the containers is uniformly directed vertically from top to bottom. This aspect will be explained in more detail below with reference to Figures 2 and 3. The partitions 9 are closed at the top. In this case, this means that the partitions 9 of the first section are flush with the top of the machine housing 11.

[0152] The partition walls of the first section S1 are spaced inwards from the walls 10 of the machine housing in sections. There, the partition walls 9 together with the walls 10 of the machine housing 11 form channels (spaces, shafts), so-called extraction channels 12 of the first section, which are closed at the top and sides. Overall, the partition walls 9 are advantageously located within the area enclosed by the machine housing 11 or the walls 10 of the machine housing.

[0153] On the upper side of the extraction channels 12 of the first section are air discharge devices 8, which discharge the air from these extraction channels 12 and thereby create a suction flow 6 for the air.

[0154] The partition walls 9 of the first section do not close off to the bottom, i.e., to the floor 13, or the base of the machine housing 11. An area remains open there, through which the air can flow from the inner air displacement section 14-1 to the outside, to the extraction ducts 12 of the first section.

[0155] The air currents along the ground (installation ground) 13 and their direction are illustrated in places by arrows 15.

[0156] In the rear section (top of Figure 1) of section 1, there is an electrical control cabinet 50, the operation of which is generally known. Also in the rear section, to the left and right of the extraction duct 12 of the first section, are an air wall 35 and a water wall 34 for the air and water supply, respectively. The air wall 35 is the area of ​​the machine where the air treatment and supply are provided. Similarly, the water wall 34 is the area where the water treatment and supply are provided.

[0157] Further sections can be connected to the first section S1. In this case, these are a second section S2 and a third section S3. The treatment machine 1 has a second section S2, which is located upstream of the first section S1 with respect to the transport direction of the containers B along the transport path.

[0158] In this second section S2, at least one first transfer device 16 (T, transfer wheel, feeding device, feed wheel) is at least partially integrated. This transfer device T, 16 serves to feed the containers B, in this case the preforms 2, to the treatment unit 4 of the first section S1. The transfer device 16 extends partially into the first section S1, which is necessary for the transport of the containers B, 2. The transfer of the containers B, 2 (preforms) to the treatment unit 4 only takes place within the first section S1.

[0159] Above the second section S2, an air supply device 7 for sterile air 18 is arranged. By means of the air supply device 7, sterile air 18 is introduced relatively centrally from above into the second section S2.

[0160] In the second section S2, partition walls 9 are also provided. These partition walls 9 of the second section surround the transfer device 16, at least partially. Furthermore, partition walls 9 are also provided at the transitions to the first section S1 and further sections S4 and S5. The further sections S4 and S5 are described in more detail below.

[0161] Since the containers B generally move downstream along the transport path from one section to another, openings 19 are provided in the partition walls 9 between adjacent sections, through which the containers B can be transported. Typically, transport devices extend through the openings 19. It is preferred that these openings are designed with minimal clearance to accommodate the containers or sections of the transfer devices to be moved through them.

[0162] The partition walls 9 of the second section and partly also the walls 10 of the machine housing 11 generate a displacement flow 5 in an inner section of the second section due to the air supply device 7, which is referred to as the second inner air displacement section 14-2 in the second section S2.

[0163] The partitions 9 in the second section S2 are designed in the same way as in the first section S1. They extend above and below the containers B. This ensures that the displacement flow 5 in the area of ​​containers B,2 is directed as smoothly and uniformly as possible from top to bottom. This effectively prevents germs from penetrating to the containers and thus prevents contamination of the containers. The partitions 9 of the second section are closed at the top or are flush with the machine housing 11.

[0164] In the second section S2, the partition walls 9 are also spaced inwards from the walls 10 of the machine housing 11 in a certain area. Here, the partition walls 9 of the second section, together with the walls 10 of the machine housing 11, form an extraction duct 12 of the second section, which is closed at the top. An air discharge device 8 is located at the top of the extraction duct 12 of the second section, which removes the air from this extraction duct 12 and thereby creates a suction flow 6 for the air.

[0165] In the second section S2, the partition walls 9 do not close off to the bottom 13, i.e., to the base 13 or the mounting base of the machine housing 11. An area remains open there, through which the air can flow from the second inner air displacement section 14-2 to the extraction duct 12 of the second section.

[0166] In the second inner air displacement section 14-2, there is also a continuous airflow in a vertical direction from top to bottom (from the ceiling to the floor).

[0167] In the extraction channel 12 of the second section with the suction flow 6, the air flows vertically from bottom to top, i.e., towards the upper end of the extraction channel 12 of the second section or in the direction of the air discharge devices 8. The treatment machine 1 has a third section S3, which is located downstream of the first section S1 with respect to the transport direction of the containers B along the transport path.

[0168] In this third section S3, a second transfer device T, 17 (transfer wheel, discharge device, discharge wheel) is partially integrated. This transfer device T, 17 serves to discharge the containers B, in this case the finished containers 3, from the treatment unit 4 of the first section S1. The transfer device 17 extends partially into the first section S1, which is necessary for the transport of the containers B, 3. The transfer of the containers B, 3 (finished containers) from the treatment unit 4 to the second transfer device 17 takes place within the first section S1.

[0169] Above the third section S3, an air supply device 7 for sterile air 18 is arranged. By means of the air supply device 7, sterile air 18 is introduced relatively centrally from above into the third section S3.

[0170] Partition walls 9 are also provided in the third section S3. These partition walls 9 of the third section surround the transfer device 17 at least partially.

[0171] Partition walls 9 are also planned at the transitions to the first section S1 and the seventh section S7.

[0172] Since the containers B generally move downstream along the transport path from one section to another, openings 19 are provided in the partition walls 9 between the adjacent sections, through which the containers B can be transported.

[0173] The partition walls 9 of the third section, and partially also the walls 10 of the machine housing 11, generate a displacement flow 5 in an inner section of the third section due to the air supply device 7. This flow is referred to as the third inner air displacement section 14-3 in the third section S3. The partition walls 9 in the third section S3 are designed in the same way as in the first and second sections S1. They extend above and below the containers B. This ensures that the displacement flow 5 in the area of ​​containers B,2 is directed as smoothly and uniformly as possible from top to bottom. This effectively prevents microbial contamination of the containers B in this area as well. The partition walls 9 of the third section are closed at the top or are flush with the machine housing 11.

[0174] In the third section S3, the partition walls 9 are also spaced inwards from the walls 10 of the machine housing 11 in a certain area. Here, the partition walls 9 of the third section, together with the walls 10 of the machine housing 11, form an extraction duct 12 of the third section, which is closed at the top. An air discharge device 8 is located at the top of the extraction duct 12 of the third section, which removes the air from the extraction duct 12 and thereby creates a suction flow 6 for the air.

[0175] Downwards, towards the bottom 13 or the base of the machine housing 11, the partition walls 9 of the third section S3 do not close flush with the bottom 13. An area remains open there, through which the air 15 can flow from the second inner air displacement section 14-3 to the extraction duct 12 of the third section.

[0176] In the third inner air displacement section 14-3, there is also a continuous airflow in a vertical direction from top to bottom (from the ceiling to the floor).

[0177] In the extraction duct 12 of the third section with the suction flow 6, the air flows in a vertical direction from bottom to top, i.e. to the upper end of the extraction duct 12 or in the direction of the air discharge devices 8.

[0178] The treatment machine 1 has a fourth section S4, which is located upstream of the second section S2 with respect to the transport direction of the containers B along the transport path. Between the second section S2 and the fourth section S4 are also partition walls 9 of the fourth section with openings 19. Through these openings 19, the containers B can be transported back and forth between the second section S2 and the fourth section S4.

[0179] A heating device 20 is arranged in the fourth section S4. Preforms 2 can be heated to a forming temperature using the heating device 20. The operating principle and construction of such a heating device 20 are generally known.

[0180] The preforms 2 are transferred from the second section S2 to the fourth section S4 and thus to the heating device 20. After heating by the heating device 20, the preforms 2 are transferred again from the fourth section S4 to the second section S2.

[0181] An air discharge device 8 is arranged above the fourth section S4. This ensures a suction flow 6 within the fourth section S4.

[0182] The treatment machine 1 has a fifth section S5, which is located upstream of the second section S2 and fourth section S4 with respect to the transport direction of the containers B along the transport path.

[0183] In the fifth section S5 there are several transfer devices, in particular a fourth, fifth and sixth transfer device, 25, 26, 27, 28 or a fourth, fifth, sixth and seventh transfer wheel 25, 26, 27, 28.

[0184] Partition walls 9 of the fifth section are also arranged around the transfer devices T, 25, 26, 27, 28. However, unlike the partition walls 9 of sections S1 to S4, these partition walls 9 are sealed at the bottom with an impermeable base plate. The partition walls 9 in the fifth section S5 are therefore designed differently at the bottom than those in the first, second, and third sections S1, S2, S3. The partition walls T extend above and below the containers B. At the top, the partition walls 9 of the fifth section are closed or are flush with the machine housing 11. Several air extraction devices 8 are arranged above the fifth section S5. These create a suction flow 6 within the fifth section S5.

[0185] The fifth section S5 is divided into inner sections 31 and outer sections 32 by the partition walls 9 of the fifth section, in which suction flows of different strengths 6 act.

[0186] In an inner suction flow section 31 within the partition walls 9 of the fifth section, a suction flow VD prevails. In an outer suction flow section of the fifth section between the partition walls 31 of the fifth section and the walls 10 of the machine housing, a suction flow VC prevails. The suction flow VD is greater than the suction flow VC. This also creates an advantageous preferred flow direction in the fifth section S5, from the areas with suction flow VC to the areas with suction flow VD.

[0187] Within the fifth section S5, a sixth section S6 can be arranged. The sixth section S6 contains a sterilizing fluid supply unit 30, in which the containers B, in this case the preforms 2, are supplied with sterilizing fluid. The sixth section S6 is separated from the rest of the fifth section S5 by partitions 9. The partitions 9 of the sixth section form an inner section of the sixth section. An air supply unit 7 is arranged above this inner section of the sixth section. This creates a displacement flow 5 in the inner section of the sixth section S6. Accordingly, an inner (air) displacement section 33 can be arranged within the fifth section S5. The sterilizing fluid supply unit 30 is located in the inner air displacement section 33.The sixth section S6 is also tightly sealed at the bottom by means of the partitions 9 and the base plate. Air can therefore only pass from the sixth section S6 to the fifth section S5 through openings in the partitions. In addition, air from the second section S2 and the eighth section S8 also passes through the openings for the transport of the preforms B,2 to the fifth section S5. The processing machine 1 comprises a seventh section S7, which partially surrounds two further transfer devices 24, 29, with the seventh section S7 being arranged downstream (with respect to the transport path of the containers) of the third section S3. At least one transfer device 24 can extend from the third section S3 into the seventh section S7 or be arranged partly in the third section S3 and partly in the seventh section S7.

[0188] The seventh section S7 can also be described as a vacuum lock, through which the containers B,3 are transported.

[0189] Further partition walls 9 are arranged between the seventh section S7 and the third section S3, these partition walls S9 being flush with the floor 13 and additionally having openings 19 (for the transfer device 24) through which the containers B,3 can be transported with the transfer device 24 from the third section S3 to the seventh section S7.

[0190] In one embodiment, an air extraction device 8 can be connected to the seventh section S7 from above or from below. Thus, air can be extracted from the seventh section S7 by means of the air extraction device 8, so that a suction flow 6 directed from bottom to top or from top to bottom is established in the seventh section S7, which partially flows around the transfer devices 24, 29, with the air 15 also flowing from the third section S3 to the seventh section S7 through the openings in the partition walls 9 for the transport of the containers B,3.

[0191] The treatment machine 1 can include an eighth section S8 in which at least one feeding device 40 for container B, in particular preforms 2, is arranged.

[0192] The eighth section S8 is located upstream (with respect to the transport direction of the containers B,2) of the fifth section S5. Partition walls are arranged between the eighth section S8 and the fifth section S5, these partition walls 9 also having openings 19 through which the containers B,2 can be transported from the eighth section S8 to the fifth section S5.

[0193] An air extraction device 8 is connected from above to the eighth section S8 in order to extract air from the eighth section S8 by means of the air extraction device 8, so that a suction flow 6 directed from bottom to top is established in the eighth section S8.

[0194] As previously shown, in sections S1-S8 there are individual suction flows SC and individual displacement flows VA, which are shown in Figure 1 according to the following explanations.

[0195] In the first, second, and third sections S1, S2, and S3, a displacement flow of an individual size VA1, VA2, and VA3 prevails in the inner displacement sections 14-1, 14-2, and 14-3, respectively. In the extraction channels 12, a suction flow prevails in each case, with an individual exemplary size SCx, SCy, SCz, etc.

[0196] The sections and areas with a suction flow SC include, in addition to the extraction channels 12, the fourth section S4 and the seventh section S7. Individual suction flows of size SC4 and SC7 also prevail in these sections. In the fifth section S5, an individual suction flow SC5 also prevails in the outer suction flow section 32 (i.e., outside the partition walls 9). Only in the sixth section S6, which is a subsection of the fifth section S5, was there an individual displacement flow VA6. In the inner suction flow sections 31 of the fifth section S5, a suction flow SC5i prevailed, which in turn can be larger than the suction flow SC5a in the outer suction flow section 32. In the eighth section S8, i.e., in the area of ​​the inlet 40 shortly before entering the eighth section S8, a displacement flow of size VA8 prevails.A suction flow SC4 prevails in the area of ​​the intake filters 21 in the fourth section S4 (at the heating device) and in the seventh section S7 a suction strength of SC7 is used.

[0197] Overall, the present disclosure provides a method and a device in which inner displacement sections are surrounded by suction sections. Furthermore, sections S1, S2, S3, S6, and S8, which have a displacement flow, are surrounded by sections S4, S7, and S5, which have a suction flow. Additionally, there are suction channels 12, which surround sections S1, S2, and S3 and have individual suction flows SCx, SCz, etc. This configuration enables a highly contamination-free transport (a contamination-free transport path) and treatment of the containers B within the treatment machine 1. In general, this ensures that an overpressure is created inside (sections S1, S2, and S3) in the areas considered particularly critical for germs (especially the treatment unit 4 or treatment wheel), and that a displacement flow keeps any germs or microorganisms away from the containers B.By surrounding the “inner areas” 14-1, 14-2, 14-3 with external extraction channels 12, a targeted flow direction is achieved radially outwards, also away from the treatment device 4 and the containers B. Therefore, air is supplied in the particularly critical sections S1, S2, S3 (displacement sections 14-1, 14-2, 14-3) and discharged to the outside via the surrounding external extraction channels 12.

[0198] Fig. 6 is a simplified schematic side view of the treatment machine 1, or device for treating containers 1 under sterile conditions, from Fig. 1. In this illustration, the first section S1, the third section S3, the fifth section S5, the sixth section S6, and the eighth section S8 with feeding device 40 for the containers (preforms) B,2 are shown from the side in a kind of sectional view. The suction channels 12 with the partitions 9 are highlighted in this illustration. One suction channel 12 is located to the left of the first section S1 and one to the right of the third section S3. The air flows here along arrows 15 under the partition walls 9, from the first inner displacement section 14-1 to the left extraction duct 12 and from the third inner displacement section 14-3 to the right extraction duct 12. Below the floor or installation floor 13, air currents from hall air 33 can still be seen indicated by arrows.The size of the arrows does not indicate the flow rates. The machine housing 11 should advantageously not be airtight from below. Air from the hall can enter from the outside below the sections. Due to the flow conditions and partitions 9, as well as the supply of sterile air, the hall air 33 and any germs or microorganisms contained therein do not penetrate as far as the containers B.

[0199] This illustration shows that the transfer device T, 17 has an extraction hood 160 in the third section S3. This hood is connected to an air extraction device 8, so that a suction flow 6 is generated inside the extraction hood 160. This advantageously extracts foreign particles, dirt, and / or germs from the transport device and the containers B of the transfer device T, 17. The transfer devices T, 16, 17 can also have shielding walls 111, which are not shown in detail here.

[0200] Fig. 7 is another simplified schematic side view of the device for treating containers under sterile conditions from Fig. 1. In this representation, the first section S1, the second section S2, the third section S3, the fourth section S4, the seventh section S7 and the ninth section S9 are shown from the side in a kind of sectional view.

[0201] As already described, a suction flow 6 is established in the fourth section S4. Hall air 33 is drawn in laterally and passed through filters 21 (e.g., HEPA filters) before flowing as sterile cooling air 34 through the heating elements 22 of the heating device and from there vertically upwards to the air exhaust device 8. A suction flow SE exists in the area of ​​the filters 21.

[0202] Furthermore, air 15 from the second section S2 passes through the openings 19 in the partitions 9 between the second section S2 and the fourth section S4 to the fourth section S4, where it is also drawn upwards in a vertical direction. A similar process occurs in the third, seventh, and ninth sections S3, S7, and S9. Arrows 15 also illustrate how air flows through the openings 19 in the partitions 9 between the sections. A special feature is that the flow in the seventh section S7 can be switched from suction flow 6 to displacement flow 5 (and vice versa). This changes the flow direction 15 between the sections.

[0203] The partitions 9 can advantageously be airtight and rigid. They can be made of plastic or metal. Advantageously, the partitions 9 can also be made of transparent plastic – at least in certain sections or areas of sections. This allows for a better overview. In particular, partitions 9 made of transparent plastic can be used in the area of ​​the first section S1, the second section S2, and the third section S3. There, the partitions 9 made of transparent plastic can be advantageously used between the sections.

[0204] This illustration shows that the transfer devices T, 16, 17 each have an extraction hood 160 in the second and third sections S2, S3. These are each connected to an air extraction device 8, so that a suction flow 6 is generated inside the extraction hoods 160. This advantageously extracts foreign particles, dirt, and / or germs from the transport devices or the containers B of the transfer devices T, 16, 17. The transfer devices T, 16, 17 can also have shielding walls 111, which are not shown in detail here.

[0205] The transfer devices T shown in Figures 5, 6, and 7 can partially or all of them have an extraction hood 160 and / or shielding walls 111. The extraction hoods 160 can each be connected to an air extraction device 8, so that a suction flow 6 is generated inside the extraction hoods 160. This advantageously extracts foreign particles, dirt, and / or germs from the transport devices or the containers B of the transfer devices T, 16, 17. In addition, the transfer devices T, 16, 17 can also have shielding walls 111, which are not shown in detail here, and which also protect against foreign particles, dirt, and / or germs.

[0206] Reference symbol list

[0207] 1 Device for treating containers, treatment machine

[0208] 2 Preform

[0209] 3 finished reshaped containers

[0210] 4 Treatment unit, treatment wheel, forming unit, forming wheel

[0211] 5 (Air) displacement flow

[0212] 6 (Air) suction flow

[0213] 7. Sterile air supply unit, sterile air supply unit

[0214] 8 Air discharge device

[0215] 9 Partition wall, partition walls

[0216] 10 Wall of the machine housing 11

[0217] 11 machine housings

[0218] 12 Extraction duct, extraction shaft

[0219] 13 Floor, mounting floor

[0220] 14 (inner) air displacement section

[0221] 15 Arrow indicating airflow direction; direction of airflow

[0222] 16 First transfer device, transfer wheel, feeding device, feed wheel

[0223] 17 Second transfer device, transfer wheel, discharge device, discharge wheel

[0224] 18 Sterile air

[0225] 19 Breaking through the partition wall 9

[0226] 20 Heating device

[0227] 21 filters, air filters

[0228] 22 Heating device, heating box

[0229] 23 Third transfer device, transfer wheel

[0230] 24 Fourth transfer device, transfer wheel

[0231] 25 Fifth transfer device, transfer wheel

[0232] 26 Sixth transfer device, transfer wheel

[0233] 27 Seventh transfer device, transfer wheel

[0234] 28 Eighth transfer device, transfer wheel

[0235] 29 Ninth transfer device, transfer wheel

[0236] 30 Sterilizing fluid application device 31 Inner suction flow section in the fifth section S5

[0237] 32 outer suction flow section in the fifth section S5

[0238] 33 Hall air, arrow for hall air

[0239] 34 Water wall

[0240] 35 Air wall

[0241] 40 Feeder for containers or preforms, rail, chute, pneumatic conveyor

[0242] 50 electrical switch cabinet

[0243] 103 Mouth area of ​​the preform 104 Shaft of the preform 105 Top (bottom) of the preform 106 Neck ring 107 Transport device, transport wheel, rotor 107-1 Upper part of transport device or transport wheel 107-2 Lower part of transport device or transport wheel 108 Container carrier, gripper, receiving device for containers 109 Rotation axis, rotary axis of transfer device or transport device

[0244] 111 Shielding wall, cover, surrounding wall 1112 Base of transfer device, column, post, pipe, stand

[0245] 113 Base, mounting base, plinth 111-1 Upper end of the cover 111-2, 111-3 Lower end of the cover 1130 Lower end of the container B, 1 or B,2 160 Extraction device, extraction hood, extraction bell 161 Lower circumferential edge of the extraction device 162 Air discharge opening of the extraction device 163 Air intake opening of the extraction device 164 Casing of the extraction device 165 Interior of the extraction device B Container (all types, finished containers, preforms, etc.)

[0246] S1 Section 1, first section, section with treatment facility

[0247] S2 Section 2, second section, section with one or more transfer devices (transfer wheel, feed device, feed wheel)

[0248] S3 Section 3, third section, section with one or more transfer devices (transfer wheel, discharge wheel)

[0249] S4 Section 4, fourth section, section with heating device 55 Section 5, fifth section, section with one or more transfer devices, e.g. singulation wheel

[0250] 56 Section 6, sixth section, section with a sterilizing fluid application device S7 Section 7, seventh section, section with one or more transfer devices T, e.g. transfer wheels, discharge device, discharge wheel

[0251] S8 Section 8, eighth section, section as part of the feed for container 40

[0252] SC Size of an air suction flow SE Size of the air suction flow in section S4

[0253] R axis of rotation

[0254] T Transfer device (general), transfer wheel

[0255] VA size of an air displacement flow

Claims

1.

1. Transfer device (T) for the contamination-free transport of containers (B) made of a thermoplastic material in the area of ​​a device for treating containers (1), in particular a forming machine, e.g. a stretch forming machine or stretch blow molding machine (4) for forming containers (B), wherein the transfer device (T) has a transport device (107) movably mounted on a base (112) with several container supports (108) arranged circumferentially distributed around its circumference for holding and transporting the containers (B) along a transport path, wherein the transfer device (T) has an extraction hood (160) comprising: an air discharge opening (162) for discharging air from the interior of the extraction hood (160), an air intake opening (163) distinct from the air discharge opening (162) for drawing air from outside the extraction hood (160),a casing (164) which encloses the extraction hood except for the air discharge opening (162) and air intake opening (163), wherein the extraction hood (160) with the air intake opening (163) is directed towards the transport device (107), and the air discharge opening is configured to be connected to an air discharge device (8) in order to extract air from the interior (165) of the extraction hood (160) in such a way that a suction flow (6) is created there and loosened foreign particles, dirt, germs and / or microorganisms are carried towards the air discharge opening, (162) be sucked away and not reach the containers (B).

2. Transfer device according to claim 1, wherein the air discharge opening (162) and the air intake opening (163) are arranged on opposite sides of the extraction hood (160).

3. Transfer device according to claim 1 or 2, wherein the air intake opening (163) is surrounded by a lower circumferential edge (161) of the casing (164), wherein the lower circumferential edge (161) extends at least in sections as far as possible to the transport device (107) which moves along the transport path.

4. Transfer device according to claim 1, wherein the extraction hood (160) is attached to a stationary part of the transfer device (T).

5. Transfer device according to one of the preceding claims, wherein the air extraction device (8) can be attached to a machine housing (11) of the forming machine (1).

6. Transfer device according to one of the preceding claims, wherein the casing (165) of the extraction hood (160) is funnel-shaped, conical, bell-shaped, tubular or cylindrical.

7. Transfer device according to one of the preceding claims, wherein the latter comprises a shielding wall (111) extending horizontally along a transport path of the containers (B) on the transfer device (T) and vertically downwards from the transport device (107) at least to the lower end (105, 1130) of the longest container (B) being transported on the transfer device (T), wherein the shielding wall (111) is arranged between the base (112) and the containers (B) and is spaced apart from both the base (112) and the transport path, wherein the shielding wall (111) is configured such that it supports the transport of the containers (B) under sterile conditions in the area covered by the shielding wall (111), in particular preventing foreign particles, dirt, germs and / or microorganisms from detaching from the transfer device (T) and reaching the containers (B).

8. Transfer device (T) according to claim 7, wherein the shielding wall (111) is stationary relative to the transport device.

9. Transfer device (T) according to one of the preceding claims, wherein it is designed as a transfer wheel (T) which has a transport device (107) rotatably mounted on the base (112) about a rotation axis (109) and which is designed as a transport wheel, rotor or star.

10. Transfer device (T) according to one of the preceding claims, wherein the shielding wall (111) surrounds the base (112) at least partially, in particular up to 170° and in particular up to 200° of a complete revolution around the transfer device (T).

11. Transfer device (T) according to one of the preceding claims, wherein the base (112) is firmly anchored to the floor (113) and has at least one curve for a curve control which is arranged below the transport device (107), in particular below the container carriers (108) of the transport device (107).

12. Transfer device (T) according to one of the preceding claims, wherein the shielding wall (111) is attached at its upper end (111-1) to a circumference of the transfer device (T), in particular to a lower part (107-2) of the transport device (107), wherein at least one curve is located there.

13. Transfer device (T) according to claim 7, wherein the shielding wall (111) is attached at its upper end (111-1) to a circumference of the transfer device (T), in particular the transport device (107), and is arranged to move with the transport device (107).

14. Device for the contamination-free treatment of containers, in particular a treatment machine (1) which is surrounded by a machine housing (11) standing on a base (13) and comprises at least one transfer device (T) according to one of the preceding claims, wherein the device is supplied with filtered air which flows from top to bottom and escapes at the bottom into the environment outside the machine housing (11).

15. Device according to claim 14, wherein the device is a treatment machine (1) comprising at least a first section (S1) in which a treatment device (4) for containers, in particular a treatment wheel, is arranged, wherein the device comprises: partitions (9) which are located in the first section (S1) and at least sectionally around The treatment device (4) is arranged around the first section (S1) to form an inner section at least partially enclosed by these partitions (9). An air supply device (7) for sterile air is connected to this inner section of the first section (S1) and is configured to supply sterile air within the inner section of the first section (S1) enclosed by the partitions (9) of the first section (S1), such that a first inner air displacement section (14) is formed surrounding the treatment device (4). The partitions (9) of the first section (S1) are arranged at least sectionally spaced from the machine housing (11), in particular inwards, so that outer extraction channels (12) of the first section (S1) are formed between the machine housing (11) and the partitions (9), which surround the treatment device (4) to a predominant extent.wherein the partition walls (9) of the first section (S1) extend at least section by section along a transport path of the containers (B) around the treatment device (4) and project vertically above and below the containers (B) without being flush with the floor (13), in particular the installation floor (13), wherein the suction channels (12) of the first section (S1) are closed laterally and upwards, and a vertical displacement flow (5) is formed at least in the area of ​​the containers (B) by the supply of sterile air in the first inner air displacement section (14), wherein an air extraction device (8) is provided which is connected to the outer suction channels (12) of the first section (S1) and is configured to extract air from the outer suction channels (12) of the first section (S1),so that a suction flow is formed in the extraction ducts (12) of the first section (S1) and air flows from the first inner air displacement section (14) in a radial direction to the outer extraction ducts (12) of the first section (S1) under the partition walls (9) of the first section (S1).

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