DE202019104001U1 - Transport device for transporting plastic preforms - Google Patents

Abstract

Transport device for transporting plastic preforms (10) with a first rail guide device (2a) and a second rail guide device (2b), which extend in a predetermined transport direction parallel to each other and at a predetermined distance to each other and between which a gap is formed, said gap such is dimensioned such that a base body of the plastic preforms (10) can pass through this gap and a support ring (10a) arranged in an opening region of the plastic preforms (10) rests on the first rail guide device (2a) and the second rail guide device (2b) such that the plastic preform (10) can be transported in the transport direction on the rail guiding devices, the transport device (1) furthermore having a hold-down device (4) which is arranged above the rail guiding devices (2a, 2b) such that d the mouth region (10a) of the plastic preforms (10) is transportable between the rail guide devices and the hold-down device (4), and wherein an adjusting device (5) is provided to adjust a position of the hold-down device (4) relative to the rail guide devices (2a, 2b) and wherein the transport device (1) further comprises a support (6) on which at least the rail guide means (2a, 2b) and / or the hold-down device (4) is arranged, characterized in that the rail guide means (2a, 2b) as strips, in particular Metal strips are embodied, which are preferably inserted into at least one groove of the carrier (8), and / or the hold-down device (4) at least a first hold-down segment (42) and a second hold-down segment (44), wherein the first hold-down segment (42) and the second hold-down segment (44) extend in the transporting direction, and d as first hold-down element (42) relative to the second hold-down element is movable.

Description

The present invention relates to a transport device for transporting plastic preforms. In the field of beverage manufacturing industry, it has long been known to first heat plastic preforms in an oven and then to expand them by means of a blow molding machine to plastic bottles. In this case, these plastic preforms are usually fed in series.

For this purpose, transport devices are known from the prior art, which transport the plastic preforms, in particular suspended. It comes in the course of ever-increasing production speeds in these transport devices sometimes errors, such as jamming of plastic preforms. Also known from the prior art hold-down devices which guide the guided on rails plastic preforms from above, in order to improve the transport in this way.

If, for example, a changeover to other types of plastic preforms or to plastic preforms with a different geometry is required, this also requires an adaptation of this retaining device. This adjustment is usually made in the prior art by bending the hold-down means so as to achieve the adjustment. This results in partially inclined or inclined sections, which can also lead to a misconduct during the transport of the plastic preforms.

The present invention is therefore based on the object to provide a device which is more easily adaptable to different geometries of the plastic preforms. It should also be avoided that when changing the position of the hold-down device changes to adjacent modules must be made. In addition, a device is to be created, which facilitates the transport of the plastic preforms even at higher transport speeds.

These objects are achieved according to the invention by the subject matter of the independent claims. Advantageous embodiments and further developments are the subject of the dependent claims.

A transport device according to the invention for transporting plastic preforms has a first rail guide device and a second rail guide device, which extend in a predetermined transport direction of the plastic preforms parallel to each other and at a predetermined distance from each other on. In this case, a gap is formed between these rail guide devices, wherein this gap is dimensioned such that a base body of the plastic preforms can pass through this gap and arranged in an opening region of the plastic preforms support ring rests on the first rail guide device and the second rail guide device, such that the Plastic preform in the transport direction on the rail guide devices is transportable.

Furthermore, the transport device has a hold-down device, which is arranged above the rail guide devices such that the mouth region of the plastic preforms can be transported between the rail guide devices and the hold-down device. Furthermore, an adjusting device is provided in order to adjust a position of the hold-down device with respect to or relative to the rail guide devices. Furthermore, the transport device has a support on which at least the rail guide devices and / or the hold-down device is arranged.

According to the invention, the rail guiding devices are embodied as strips, in particular as metal strips, which are preferably inserted into at least one groove of the carrier and / or this carrier is at least partially manufactured in a 3D printing process and / or the hold-down device has at least a first hold-down segment and a second hold-down segment on, wherein the first hold-down segment and the second hold-down segment extend in the transport direction and the first hold-down segment is movable relative to the second hold-down segment.

Preferably, the rail guide devices are designed as rails, in particular strip-shaped rails. Instead of metals for the strips, other materials such as in particular plastics could be used, but metal has the advantage of easier and cheaper manufacturability.

These metal strips are preferably stabilized by the groove of the carrier, in which they are inserted, and in particular also stabilized with respect to the compressive force which is applied by the plastic preforms.

In particular, strips are understood to mean objects that extend in a longitudinal direction, but also (to a lesser extent) in a width direction that is parallel to the longitudinal direction is perpendicular and continue to have a certain thickness, which, however, is considerably less than the extension in the longitudinal direction and the width direction.

Preferably, the first hold-down element and the second hold-down element are mechanically connected to each other, in particular via a hinged connection. In particular, the first hold-down element and the second hold-down element form a guide surface, along which, for example, the mouth edges of the plastic preforms can slide at least in sections.

In particular, by the configuration of the hold-down device, it is possible that their adjustment takes place exactly parallel to the transport direction and / or the rail guiding devices. Also, there is thus no relative movement to connection assemblies and in particular a drain rail. Preferably, such a relative movement between the two hold-down elements can be realized, as explained in more detail below.

The embodiment of the carrier, which is designed in particular as a housing, brings several advantages. In the prior art, the 3D curves forming the guide rail means have usually been milled from aluminum parts, resulting in high costs.

Preferably, the Kunststoffvorformline or the plastic preforms with their vertically upwardly oriented mouth can be transported. In particular, the plastic preforms are transported suspended. It is also conceivable that the plastic preforms are transported in a horizontal direction, as well as in a slanted direction, wherein nevertheless the orifices are respectively oriented upwards and in the vertical direction further away from the center of the earth. Preferably, the transport device has a changing pitch. It is thus possible for a substantially horizontal transport to take place in the transport direction in the end regions of the transport device, whereas the plastic preforms in the initial region are transported along a gradient, for example under the action of gravity.

The plastic preforms can be transported in this area with a pitch which is greater than 5 °, preferably greater than 10 ° and preferably greater than 20 °. Preferably, the plastic preforms are transported in this area with a pitch which is less than 60 ° relative to the horizontal, less than 50 °, less than 40 ° and preferably less than 30 °.

Preferably, the hold-down is arranged above the rail guide devices.

In a further advantageous embodiment, a lateral distance of the rail guide devices is variable. In this way, a conversion to plastic preforms with different diameters is possible.

In a further advantageous embodiment, the rail guiding devices are fastened to the carrier. Particularly preferably, the rail guiding devices are made of metal and / or sheet metal.

Preferably, the carrier is integrally formed. In particular, the carrier is made of a plastic selected from a group of plastics containing PET, ASA (acrylonitrile-styrene acrylate), PLA, polycarbonate, PA12 or the like.

The rail guiding devices can be non-positively or positively arranged on the carrier. In a further advantageous embodiment, the rail guiding devices are designed as metal strips, which are preferably inserted into at least one groove of the carrier.

In this case, it is possible that different metal strips (for example metal strips with different widths) are used in the carrier to convert to different plastic preforms. For this purpose, the carrier may have grooves into which the rail guide devices can be inserted and held, for example, by clamping. However, it would also be possible for other attachment mechanisms to be provided, such as screwing on the rail guides, gluing or the like.

They may be the rail guide devices, or the drain guides as lasered sheets, preferably made of spring steel, which in a slot in the 3D printing part i. be plugged into the carrier and thus take the 3D contour. This procedure is favorable, easy to produce and preferably no coating is necessary or provided.

In a further preferred embodiment, the device has a locking device to block the supply of plastic preforms in other devices such as a Eintaktstern or a furnace for heating the plastic preforms. This locking device could be, for example, a locking finger, which can be moved into the transport path of the plastic preforms. However, it would also be possible and preferred that the locking means a laterally on the Plastic preforms deliverable element which blocks their transport.

In this case, this locking device preferably has a drive which delivers a blocking element to the plastic preforms. This drive can be, for example, an electromotive, magnetic, pneumatic or hydraulic drive hand. Preferably, this drive is suitable and intended to block the supply of plastic preforms for a defined period of time, for example for a period of time which is selected so that exactly one position is not occupied by a plastic preform in a subsequent single-ended star.

In a further preferred embodiment, air guiding devices are provided adjacent to the rail guiding devices and in particular above the same. By means of these air guiding devices or air guiding devices, the transport of the plastic preforms can be improved. In this case, these air guiding devices preferably have an air gap extending along the rail guiding device and / or at least one and preferably a plurality of air ducts which extend at a predetermined angle different from 0 ° relative to the rail guiding device.

Thus, for example, an air guiding device can be provided, which extends along the transport direction of the plastic preforms and which has the said channels. This block or this air guiding device can in turn be spaced from the respective rail guiding device. In particular, these air ducts form an angle with the transport direction or the plane of the rail guiding device which is between 70 ° and 90 °, preferably between 80 ° and 90 ° and particularly preferably between 85 ° and 90 °. Particularly preferably, both the said channels are provided, as well as the said air gap. This air gap can be supplied for example via the channels with air.

Air ducts are preferably incorporated-in particular above the guide plates or rail guiding devices-preferably on both sides, which preferably blows the preform (plastic preform) pulp over the entire length of the guides in the outlet direction by means of outlet gills.

In addition, a continuous air gap, which generates an air cushion on the guide plates, is additionally provided between the guide plates or rail guiding devices and the application belt.

In addition, it is also comparatively easy to provide for the guide rail devices or for a preferably present wegschaltbare guide curve also a lasered sheet, which in the 3D printing part i. attached to the carrier.

In this way, a transport of the plastic preforms is improved. In a further preferred embodiment, the rail guide devices at least in sections in the transport direction on a curved course. By means of this curved course, for example, an inclined course of the device can be transferred to a horizontal course of the device.

The hold-down element preferably also has a curved course at least in sections in the transport direction.

In a further advantageous embodiment, the hold-down elements are designed as milled elements and / or as metal elements. In a further advantageous embodiment, the first hold-down element is pivotable relative to the second hold-down element with respect to a predetermined pivot axis. Advantageously, this pivot axis is parallel to a transport plane of the plastic preforms. Preferably, this pivot axis can also be perpendicular to a longitudinal direction of the plastic preforms.

In a further advantageous embodiment, the adjusting device has a first adjusting unit for adjusting the first hold-down element and a second adjusting unit for adjusting the second hold-down element. Particularly preferably, these first and the second adjustment are independently operable. In this way it can be achieved that the parallelism to the rail guide elements can be maintained for the adjustment of the hold-down element.

In a further preferred embodiment, at least one of these adjusting units has a rotatable adjusting element. Thus, for example, a screw can be provided which cooperates with a thread, so that, for example, an adjusting unit such as a rod or a bolt can be moved in its longitudinal direction by an actuation of the adjustment, so as to change the position of the hold-down element.

The adjustment unit preferably has a bolt and / or a rod, which is particularly preferably arranged on a hold-down element. Particularly preferably, this bolt or rod is fixedly arranged on the hold-down element. Particularly preferably, this bolt and this rod can be compared to the Hold-down member extend at an angle which is between 70 ° and 90 °, preferably between 80 ° and 90 °.

In a further preferred embodiment, the hold-down device has an overlap region in the transport direction, in which a region of the first hold-down element and a region of the second hold-down element overlap. Thus, it is possible for both regions of the first hold-down element and regions of the second hold-down element to be provided or provided in a direction perpendicular to the direction of transport.

In a further advantageous embodiment, a hold-down element has at least one and preferably a plurality of projections which engage in recesses of the second hold-down element. Conversely, the other hold-down element preferably also has projections which engage in the recess of the first-mentioned hold-down element.

In this way, a stable hold between the first hold-down element and the second hold-down element can be achieved at the same time a reliable surface of the hold-down element against the example, the plastic preforms can slide or through which the plastic preforms can be kept in their transport path.

Preferably, the two hold-down elements are executed entangled with respect to each other like a comb. Through this comb-like entanglement and steps in the hold-down device can be avoided.

In a further advantageous embodiment, the geometric shape of the hold-down elements is designed such that substantially independent of a pivot position of the first hold-down element relative to the second hold-down element in the overlap region, the plastic preforms can only come into contact with one and in particular exactly one hold-down element.

This is particularly preferably the hold-down element following in the transport direction or the second hold-down element in the transport direction.

This can be done such that, for example, fingers of the first hold-down element engage in recesses of the second hold-down element, these fingers have a smaller thickness, so that they are independent of the pivot position of the first hold-down element against the second hold-down element these fingers not from the recesses, for example, down and that is protruding in the direction of the plastic preforms.

In a further embodiment, the first hold-down element is displaceable relative to the second hold-down element and in particular displaceable in the transport direction. Thus, it is possible that, as mentioned above, the fingers and recesses mesh with each other, but nevertheless a Relativverschiebbarkeit, in particular in a direction of extension of these fingers is given.

Preferably, a longitudinal guide direction can be provided, which allows this shift. For example, in the projections or fingers of a hold-down element elongated holes may be provided and on the recesses or the projections of the second hold-down element projections or bolts which engage in these elongated holes.

In this way, with an adjustment of the position of the hold-down element relative to the rail guide elements, a higher degree of freedom or more freedom can be achieved and thus a more exact positioning. It is possible that this longitudinal displacement is always given. However, it can also be provided locking means which lock a locking of the position of the first hold-down element relative to the second hold-down element. In this case, both a specific pivot position and a certain linear position of the first hold-down element relative to the second hold-down element can be locked.

Particularly preferably, these longitudinal guide means allow a displacement of the one hold-down element relative to the second hold-down element by at least 1 cm, preferably by at least 2 cm, preferably by at least 3 cm.

For example, the slots may have an extension in the transport direction of more than 1 cm, preferably more than 2 cm, preferably more than 3 cm.

Furthermore, it is also conceivable that this longitudinal guide device allow a displacement of the one hold-down element relative to the second hold-down element by less than 30 cm, preferably less than 20 cm, preferably less than 10 cm and preferably less than 8 cm. These dimensions of the left shift have proven to be suitable in practice to effect the necessary adjustments of the hold-down element.

The present invention is further directed to a transport arrangement for transporting Plastic preforms directed, which has a transport device of the type described above, and arranged in the transport direction of the plastic preforms after the transport device separating means for separating the plastic preforms in the transport device. For example, this separating device may be a so-called single-start star. Particularly preferably, the transport device is arranged downstream of a heating device for heating plastic preforms.

In a further preferred embodiment, the transport arrangement has a sorting device for sorting the plastic preforms. In this case, this sorting device can cause the plastic preforms are already aligned in a particular orientation, for example, hanging with the mouth up. This sorting device may be, for example, a so-called disk sorter or a roller sorter. In particular, the sorting device is a roller sorter. In this case, it is possible for the transport rollers of this roller sorter, which likewise preferably form a gap through which the main body of the plastic preform can pass, to be arranged in front of the abovementioned rail guiding devices, so that the plastic preforms come directly from the roller sorter (or the gap between its rollers) ) to the rail guiding devices (or the gap between them).

By the invention, a weight saving is achieved. Also, a simpler installation can be made possible. In addition, several functions can be realized or a conversion to different functions can be easily realized. In addition, the number of necessary parts can be reduced. Also, the fitting parts or replacement parts to be used are cheaper, as it is, as mentioned above, for example, laser-cut sheets.

• 1 eine Transportvorrichtung nach dem internen Stand der Technik der Anmelderin;
• 2 eine vereinfachte Darstellung einer erfindungsgemäßen Transportvorrichtung;
• 3 eine Darstellung einer Niederhaltereinrichtung für eine erfindungsgemäße Vorrichtung;
• 4 eine Detaildarstellung der in 3 gezeigten Niederhaltereinrichtung;
• 5 eine Darstellung einer Transportvorrichtung nach dem internen Stand der Technik der Anmelderin;
• 6 eine Darstellung des Trägers einer erfindungsgemäßen Transportvorrichtung;
• 7 eine vereinfachte Darstellung einer erfindungsgemäßen Transportvorrichtung;
• 8 eine weitere Darstellung einer erfindungsgemäßen Transportvorrichtung;
• 9 eine weitere Darstellung der erfindungsgemäßen Transportvorrichtung; und
• 10 eine Teildarstellung der erfindungsgemäßen Transportvorrichtung aus 9.

Further advantages and embodiments will become apparent from the accompanying drawings. Show:

• 1 a transport device according to the internal prior art of the applicant;
• 2 a simplified representation of a transport device according to the invention;
• 3 an illustration of a hold-down device for a device according to the invention;
• 4 a detailed representation of in 3 shown hold-down device;
• 5 a representation of a transport device according to the internal prior art of the applicant;
• 6 a representation of the carrier of a transport device according to the invention;
• 7 a simplified representation of a transport device according to the invention;
• 8th a further illustration of a transport device according to the invention;
• 9 a further illustration of the transport device according to the invention; and
• 10 a partial view of the transport device according to the invention 9 ,

1 shows a transport device 100 according to the internal state of the art of the applicant. This has a first rail guide device 102 such as a transport rail. In addition, a second rail guide device is provided, however, in 1 is not visible.

Along this rail guide devices are plastic preforms 10 transported, here partly under the effect of gravity. These plastic preforms 10 have a base body 10b on, passing through a gap between the rail guiding devices 102 . b can occur. In addition, the plastic preforms have a mouth area 10a on, in turn, has a support ring, by the rail guide devices 102 , b is supported.

Next to it is a hold-down device 104 provided, which serves to hold the plastic preforms stable on their track or on the rail guide devices. If now a conversion to different preform (plastic preform) - formats to be performed, in the prior art, the hold-down device 4 bent accordingly. In this way, different spacings between the rail guiding devices 102 , b and the hold-down device 4 , This can lead to jamming or wedging of the plastic preforms during transport. If a shift of the hold-down device 4 this is done with respect to the guide rail devices, this can also lead to different distances between these elements. Also, terminal assemblies must be re-adjusted after each new setting of the hold-down device.

In addition, even with an adjustment of the blank holder in the area B, the local rounding can not be exactly reproduced.

2 shows a simplified representation of a transport device according to the invention. Here again is the hold-down device 4 shown above the rail guide device 2a , This hold-down device 4 has a first hold-down element 42 and a second hold-down element 44 on, which are arranged together. Here is the hold-down element 42 opposite the second hold-down element 44 with respect to a pivot axis S1 pivotable.

The reference symbol T denotes the transport direction of the plastic preforms (not shown).

The reference number 5 schematically indicates an adjusting device, by means of which a position of the hold-down device 4 opposite the rail guide device 2a is adjustable. This adjustment 5 has a first adjustment 52 on, for adjusting the position of the first hold-down element 42 serves, as well as a second adjustment 54 for adjusting the second hold-down element 44 serves.

These adjusting devices each have a rotating device 62 . 64 which can be twisted by a user so as to move the bar bodies 56 and 58 along the arrows shown P1 and P2 to effect. In this way, the two hold-down elements 42 and 44 also be adjusted independently.

The rod bodies 56 and 58 preferably extend perpendicular to the respective hold-down elements arranged on them 42 . 44 ,

In an adjustment of the first adjustment, the hold-down element moves 42 as by the arrow P1 indicated at a right angle to the inclination guide angle of the rail guide devices. Thus, no relative movement occurs with respect to a connection module.

Also the second hold-down element 44 can through the second actuator 54 and in particular by rotation of the actuating element 64 be adjusted perpendicular to the corresponding guide rail section.

Generally, the first hold-down element is preferred 42 adjustable in one direction, which is perpendicular to the transport direction.

3 shows another view of the hold-down device 4 , Here is also the transition area U between the first hold-down element 42 and the second hold-down element 44 shown. It can be seen that on the first hold-down element 42 a variety of protrusions 42a are arranged. These protrude into recesses 44a attached to the second hold-down element 44 are arranged. In this way, at the (not shown) underside of the hold-down element 4 a relatively smooth and in particular stepless surface can be achieved only by the limiting projections 44b of the second hold-down element 44 are formed.

Regardless of the reach in operation pivotal position of the first hold-down element 42 opposite the second hold-down element 44 protrude the projections 42a in no position down over the protrusions 44b out. This can for example be achieved by a thickness or width of the projections 42a is chosen lower than a corresponding width of the projections 44b , This can also be done by an appropriate choice of the pivot axis S1 be achieved. The hold-down elements are preferred 42 . 44 by means of a pen 47 , which slides in a slot, connected.

A relative transverse movement through the different angles of the threaded rods takes place in the comb-like entanglement of the two hold-down elements 42 and 44 instead of. As mentioned above, the geometries and radii are designed so that no steps on the underside of the blank holder, ie the side which can come into contact with the plastic preforms on.

By actuating the control elements 62 and 64 So the position of the hold-down element can be adjusted exactly.

4 shows a further detailed representation of the hold-down device 4 , It can be seen that here the first hold-down element 42 opposite the second hold-down element 44 is also adjustable in the transport direction, so that in particular the length of the entire hold-down element can be changed.

For this purpose, the projections 42a each slots 45 on, in which pin or pin 47 passing through the protrusions 44b is guided, intervene. In this way, a certain longitudinal play of the two hold-down elements is achieved with respect to each other. Also this longitudinal clearance or this Längsverschiebbarkeit facilitates the adjustment of the hold-down element by the user. This can ultimately adjust the setting solely by turning the two control elements 62 and 64 cause. Thus, the sliding in the slots pin ensures a relative transverse movement.

It can also be seen that (optional) the projections 44b of the second hold-down element 44 are executed angled, and a first Section, which directly to the main body of the hold-down element 44 are arranged, and a second opposite this first portion angled section.

In this way, a better adaptation to the different curvatures can be achieved. The angle by which the two sections are angled relative to each other, thereby represents an average Winkelmaß, under which the hold-down elements are inclined with respect to each other.

5 again shows a transport device 100 According to the state of the art. This has a support and in particular a housing 106 on that here consists of several parts, namely here from 8 parts, which are screwed together in part by screw. In addition, here are the plastic preforms again 10 shown over the guide rail device 102 and 102b be guided. The element 112 denotes an exchangeable and in particular deliverable guide segment, which can be adapted to different dimensions of preforms. More specifically, this segment can effect the transition into a single-ended star (not shown).

6 shows a housing according to the invention. This housing is designed here as a 3D printing element and in particular in one piece. Thus, the housing is preferably made of a plastic and in particular of a 3D printable plastic. Again, this is a lead segment 16 provided, which is adjustable in position, and thus forms a barrier device for plastic preforms.

7 shows a further illustration of a transport device according to the invention 1 , Here are the two hold-down elements again 42 and 44 provided, with respect to the pivot axis S1 are pivotable with respect to each other. Furthermore, here is the Schienenführ-guiding device 2 B shown. The rail guide device 2a is covered by this.

Furthermore, again the adjusting mechanism or the adjusting device 5 recognizable, in which case in particular the control elements 62 and 64 as well as the rod-like bodies 56 and 58 are recognizable. These elements are total of the carrier or the housing 6 arranged. This means that the carrier is also partially formed here as a housing. In this case, for example, the adjustment 5 to this carrier or this case 6 be screwed on.

8th shows a more detailed representation of the transport device according to the invention 1 , Here are the two control elements again 62 and 64 recognizable, in common to a carrier 65 are arranged. This carrier in turn is on the housing or carrier 6 arranged.

In addition, here is the second hold-down element 44 shown, as well as the above-mentioned transition area U in which these two hold-down segments 42 (not shown) and 44 into each other. Again, the comb-like structure is shown, which is present in this transition region.

The reference number 50 indicates an actuating element with which a locking device for the plastic preforms can be realized.

In a preferred embodiment, therefore, the transport device has a locking device which can block the supply of plastic preforms to a downstream device, such as a single-ended star. It is possible that the transport of the plastic preforms is prevented by the fact that the gap between the devices to be moved is narrowed, so that a plastic preform can be clamped in this area.

9 shows a further illustration of the transport device according to the invention 1 , where again the locking device 50 is shown. Furthermore, in turn, the two rail guide devices 2a and 2 B provided as well as the retaining device 4 ,

The reference numerals 32 and 34 refer to suspension devices, in particular spring plates. These can serve as drain guides for guiding the plastic preforms.

10 shows a detailed representation of in 9 shown transport device. Here again is the rail guide device 2a shown. Above this rail guide device is a ventilation block 70 provided, which also extends along the rail guide device. This ventilation block 70 has a variety of channels 72 up here perpendicular to the rail guide device 2a stand. Next to it is an air gap, more precisely a continuous air gap 74 formed between the spoiler 70 and the rail guide device 74 extends along the transport direction. Also on the opposite side of such air ducts are provided. These air ducts favor a transport of the plastic preforms.

LIST OF REFERENCE NUMBERS

1

transport device

2a, 2b

Rail guide devices

4

Hold-down device

5

Adjustment device, adjusting device

6

Housing or carrier

10

The plastic preforms

10a

mouth area

10b

body

16

guide segment

32, 34

suspension means

42

Hold-down element, first

42a

projections

44

Hold-down element, second

44a

recesses

44b

projections

45

slots

47

pen

50

locking device

52

Adjustment device, first

54

Adjustment device, second

56, 58

rod body

62, 64

Actuators designed as rotary devices

65

carrier

70

Ventilation block (louver)

72

channels

74

Through air gap

100

Transport device, StdT

102a, 102b

Rail guiding equipment, StdT

104

Hold-down device, StdT

112

Lead segment, StdT

P1, P2, P3

arrows

S1

swivel axis

U

Transition area

The Applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided that they are novel individually or in combination with respect to the prior art. It is further pointed out that features have also been described in the individual figures, which in themselves can be advantageous. The person skilled in the art immediately recognizes that a particular feature described in one figure can also be advantageous without taking over further features from this figure. Furthermore, the person skilled in the art recognizes that advantages can also result from a combination of several features shown in individual or in different figures.

Claims (16)

Transport device for transporting plastic preforms (10) with a first rail guide device (2a) and a second rail guide device (2b), which extend in a predetermined transport direction parallel to each other and at a predetermined distance to each other and between which a gap is formed, said gap such is dimensioned such that a base body of the plastic preforms (10) can pass through this gap and a support ring (10a) arranged in an opening region of the plastic preforms (10) rests on the first rail guide device (2a) and the second rail guide device (2b) such that the plastic preform (10) can be transported in the transport direction on the rail guiding devices, the transport device (1) furthermore having a hold-down device (4) which is arranged above the rail guiding devices (2a, 2b) such that d the mouth region (10a) of the plastic preforms (10) is transportable between the rail guide devices and the hold-down device (4), and wherein an adjusting device (5) is provided to adjust a position of the hold-down device (4) relative to the rail guide devices (2a, 2b) and wherein the transport device (1) further comprises a support (6) on which at least the rail guide means (2a, 2b) and / or the hold-down device (4) is arranged, characterized in that the rail guide means (2a, 2b) as strips, in particular Metal strips are embodied, which are preferably inserted into at least one groove of the carrier (8), and / or the hold-down device (4) at least a first hold-down segment (42) and a second hold-down segment (44), wherein the first hold-down segment (42) and the second hold-down segment (44) extend in the transport direction and the first hold-down element (42) is movable relative to the second hold-down element. Transport device (1) after Claim 1 , characterized in that the Rail guiding devices (2a, 2b) are fastened to the carrier (8). Transport device (1) according to the preceding claim, characterized in that the carrier (8) is at least partially manufactured in a 3D printing process. Transport device (1) according to at least one of the preceding claims, characterized in that adjacent to the rail guide means and in particular above the same louvers (12, 14) are formed. Transport device (1) according to at least one of the preceding claims, characterized in that the device comprises a locking device (50) which allows blocking the flow of the plastic preforms for in the transport device (1) subsequent machines. Transport device (1) according to the preceding claim, characterized in that the louvers have an air gap extending along the rail guide device and / or at least one and preferably a plurality of air ducts which extend at a predetermined angle different from 0 ° relative to the rail guide device. Transport device (1) according to the preceding claim, characterized in that the rail guide means (2a, 2b) at least in sections in the transport direction have a curved course. Transport device (1) according to at least one of the preceding claims, characterized in that the hold-down elements (42, 44) are milled elements. Transport device (1) according to at least one of the preceding claims, characterized in that the first hold-down element (42) relative to the second hold-down element (44) with respect to a predetermined pivot axis (S1) is pivotable. Transport device (1) according to at least one of the preceding claims, characterized in that the adjusting device has a first adjusting unit (52) for adjusting the first hold-down element (42) and a second adjusting unit (54) for adjusting the second hold-down element (44). Transport device (1) according to the preceding claim, characterized in that at least one adjusting unit (52, 54) has a rotatable adjusting element. Transport device (1) according to at least one of the preceding claims, characterized in that the hold-down device (4) has an overlap region (U) in the transport direction (T), in which a region of the first hold-down element (42) and the second hold-down element (44 ) overlap. Transport device (1) according to at least one of the preceding claims, characterized in that a hold-down element (42) at least one and preferably a plurality of projections (42a) which engage in recesses (44a) of the second hold-down element (44). Transport device (1) according to at least one of the preceding Claims 11 - 12 , characterized in that the geometric shape of the hold-down elements (42, 44) is formed such that substantially independent of a pivot position of the first hold-down element relative to the second hold-down element in the overlap region, the plastic preform can only come into contact with a hold-down element. Transport device (1) according to at least one of the preceding claims, characterized in that the first hold-down element (42) relative to the second hold-down element (44) is displaceable in the transport direction. Transport arrangement for plastic preforms with a transport device (1) according to at least one of the preceding claims and with a separation device arranged in the transport direction of the plastic preforms after the transport device (1) for separating the plastic preforms in the transport direction.

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