奥地利专利AT522051A1 Processing plant and process for processing plastic material for recycling

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专利摘要:
The invention relates to a processing plant (1) for plastic material for its recycling. The processing plant (1) comprises a feed device (4), a processing unit (2) with a comminution device (5) and an adjoining conveyor device (6) and a plasticizing device (3) with an extruder screw (21). The conveying device (6) comprises a shaft body (12) with a first screw web (13) which projects beyond the shaft body (12) by a projection (18) which defines a first annular surface with a first outer envelope (34). The extruder screw (21) comprises a further screw web (28) which defines a further outer envelope (35). The further screw web (28) projects with its further envelope (35), seen in the axial projection direction in the direction of a first longitudinal axis (10) of the shaft body (12), in the direction of the first longitudinal axis (10) into that of the first screw web (13) with its first projection (18) defines the first circular ring surface. Furthermore, the invention also relates to a method for processing plastic material for its recycling.
公开号:AT522051A1
申请号:T51131/2018
申请日:2018-12-19
公开日:2020-07-15
发明作者:Kroiss Günter
申请人:Next Generation Recyclingmaschinen Gmbh；
IPC主号:

专利说明:

of thermoplastic material for recycling.
WO 98/16360 A and the resulting EP 0 934 144 B1 each disclose a processing device of the generic type for comminuting, conveying and then plasticizing thermoplastic material. This preparation device comprises a feed device, a preparation unit and an adjoining plasticizing device. The processing unit in turn comprises a comminution device, a screw-shaped conveying device, a tubular housing and at least one drive means for the comminuting device and the conveying device. The size reduction device and the adjoining screw-shaped conveying device are accommodated in the tubular housing and rotatably mounted. Furthermore, the conveyor device defines a first conveyor section with a first longitudinal axis. The tubular housing has at least one feed opening which is open towards the feed device in the region of the comminution device and an outlet opening arranged on the bottom in an end region of the first conveying section of the conveying device. The plasticizing device in turn comprises an extruder screw accommodated in an extruder housing and a further drive means therefor. The extruder screw has a further conveyor section and defines a further longitudinal axis in the further conveyor section. A filling opening is arranged in the extruder housing, the filling opening and
the outlet opening arranged in the tubular housing directly against one another
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the extruder screw.
A similar preparation device of the generic type has become known from EP 1918 084 B1, which is directed to the geometric design of the transfer area between the conveyor device and the extruder screw. Here, too, the first longitudinal axis of the conveying device and the further longitudinal axis of the extruder screw are arranged in the transition region between the outlet opening and the filling opening, crossing one another at an angle of 90 ° or at a different angle with respect to a projection onto a horizontal plane. The crushed plastic material can be transferred from the conveying device to the extruder screw in an analogous manner, as previously described in WO 98/16360 A or
the resulting EP 0 934 144 B1 has been described.
These two known preparation devices have proven themselves quite well in practical operation, although a uniform transfer of the comminuted plastic material to the plasticizing device could not be achieved in all operating cases. In individual cases, pieces of plastic could collect in the transfer area of the comminuted plastic material between the outlet opening from the area of the conveying device and the filling opening into the plasticizing device, which resulted in the openings being reduced to a
clogging them.
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extruders.
The present invention is based on the object of making the transfer of the comminuted plastic material from the conveying device to the plasticizing device more uniform and even more constant, so as to collect plastic material in the transfer area and to block it
to minimize the transfer area or to prevent it at all.
This object is achieved by a processing plant for plastic material and a method for processing plastic material according to the claims.
solves.
The processing plant according to the invention is used for processing, namely the crushing, conveying and the subsequent plasticizing, of thermoplastic material for its recycling. The treatment plant includes at least one feed device and one treatment unit
a hollow cylindrical housing,
- A shaft body, with a arranged on the shaft body or
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the shaft body defines a first longitudinal axis,
the first worm web projects beyond the shaft body in the radial direction by a first protrusion and a first annular surface with an outer first envelope is defined by the first protrusion, an annular width of the first annular surface corresponding to the first protrusion,
the conveying device defines a first conveying section in the axial direction of the shaft body,
the shaft body is accommodated in the housing and is rotatably mounted on the housing at its first shaft end by means of a first bearing arrangement and on its second shaft end spaced axially therefrom by means of a second bearing arrangement, and
the housing in the region of the comminution device has at least one feed opening which is open towards the feed device,
- A plasticizer with
- an extruder housing,
at least one extruder screw, comprising a screw base and at least one further screw flight,
the at least one further screw web of the extruder screw defines an outer, further envelope,
- The extruder screw is accommodated in the extruder housing and defines a further longitudinal axis, and
the at least one extruder screw defines a further conveying section and, when viewed in the conveying direction, the plasticizing device is arranged downstream of the processing unit,
a transfer area with an outlet opening from the housing and a filling opening into the extruder housing, the transfer area being arranged in an end section of the first conveyor section of the conveying device and the first conveyor section in the transfer area having the second conveyor section.
is in fluid communication, and
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at least the further screw flight of the extruder screw, seen in the axial projection direction in the direction of the first longitudinal axis of the shaft body,
in the direction of the first longitudinal axis in the from the first screw flight with his
first protrusion defined first circular ring surface protrudes.
The advantage achieved thereby is that by arranging at least the further screw web of the extruder screw overlapping one another in the projection direction in the first circular ring surface defined by the projection of the first screw web, an even closer arrangement of the two intersecting longitudinal axes of the processing unit, in particular of the conveyor device, is also possible whose shaft body, and the extruder screw is achieved. The plastic material transported or conveyed from the first screw web of the conveying device is seen in the cross section of the conveying device directly into the working area of the extruder screw with its further screw web. The vertical transfer section in the transfer area is shortened by the preferred arrangement of the longitudinal axes crossing one another and the angular alignment thereof. Furthermore, starting from the first screw web of the conveying device, a directional positive conveyance of the comminuted plastic material is achieved directly into the extruder screw and the further or second screw web arranged thereon. This overlap of the conveying areas means that there is no need for additional tamping and / or cutting tools in the transfer area at the end of the conveying device. Furthermore, the accumulation of plastic material in the transfer area from the conveyor device to the plasticizing device is also
direction reduced or prevented at all.
Furthermore, it can be advantageous if a section of the screw base body
pers of the extruder screw into that from the first projection of the first screw
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previously crushed and conveyed plastic material can be achieved.
Another embodiment is characterized in that a carrier tube is provided, on which carrier tube the first screw web is arranged or formed, and the carrier tube is arranged on the shaft body and is connected to the shaft body in a rotationally fixed manner to form an associated structural unit. This means that different operating conditions can be taken into account quickly. In addition, it is easier to replace worn components without having to replace the entire shaft body
is.
A further possible embodiment has the features that the outer further envelope of the further screw web of the extruder screw is arranged immediately adjacent to the shaft body of the processing unit. The two longitudinal axes of the conveying device and the plasticizing device can thus be arranged at the smallest possible distance from one another. Due to the immediate, adjacent arrangement of the further screw web with its further outer envelope defined by it, collisions between the extruder screw and the shaft body of the processing unit can be avoided
become.
A further embodiment provides that the first screw web, viewed in the direction of the first longitudinal axis, ends in front of the outer envelope defined by the further screw web. This ensures that in the transfer area the first screw web of the conveyor device does not coincide with the outer circumferential
area of the extruder screw collides with its further screw flight.
Another embodiment is characterized in that a guide element is provided, which guide element is arranged in the axial direction on the side of the conveying device on the shaft body facing away from the comminution device and whose cross section, seen in axial section, in its extrusion
derschnecke section is slightly smaller than that
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nenraums of the housing can be achieved to the second bearing arrangement.
A further preferred embodiment is characterized in that a recess is provided in the shaft body, which recess is continuous over the circumference of the shaft body and whose cross section, viewed in axial section, is slightly larger in the section facing the extruder screw than the further outer one defined by the further screw web Enveloping. By arranging or forming an additional depression in the shaft body, the two intersecting longitudinal axes of the processing unit, in particular its shaft body, and the extruder screw in the transfer area can be in an even better overlapping position
be arranged with the conveying area formed by the first screw web.
Independently of this, the object of the invention can also be achieved by a method for processing plastic material according to the following
Features are solved.
The method is used to process plastic material, in particular thermoplastic material for its recycling, by means of a processing system comprising the following steps:
Provision of a feed device, the plastic material to be processed being fed in at the feed device,
- Providing a processing unit with
a hollow cylindrical housing,
a shaft body with a comminution device arranged or formed on the shaft body and a conveying device which adjoins the comminution device in the conveying direction and comprises at least one first screw web,
the shaft body defines a first longitudinal axis,
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a first conveying section being defined by the conveying device in the axial direction of the shaft body,
the shaft body is accommodated in the housing and is rotatably mounted on the housing at its first shaft end by means of a first bearing arrangement and on its second shaft end spaced axially therefrom by means of a second bearing arrangement, and
- The housing in the area of the shredding device has at least one feed opening that is open towards the feed device, and
the plastic material to be processed is crushed by the comminution device and is conveyed by means of the at least one first screw web of the conveying device along the first conveying section in the direction of the second shaft end,
- Providing a plasticizing device with
- an extruder housing,
at least one extruder screw, comprising a screw base and at least one further screw flight,
the at least one further screw web of the extruder screw defines an outer, further envelope,
- The extruder screw is accommodated in the extruder housing and defines a further longitudinal axis, and
the at least one extruder screw defines a further conveying section and, when viewed in the conveying direction, the plasticizing device is arranged downstream of the processing unit,
- Providing a transfer area with an outlet opening from the housing and a filling opening into the extruder housing, the transfer area being arranged in an end section of the first conveying section of the conveying device and the first conveying section in the transfer area with the
second conveying section is in flow connection,
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- The plastic material conveyed by the conveying device being transferred in the transfer area to the plasticizing device and its at least one extruder screw, and further
- The at least one further screw web of the extruder screw, viewed in the axial projection direction in the direction of the first longitudinal axis of the shaft body, is arranged such that the at least one further screw web projects in the direction of the first longitudinal axis into the first annular surface defined by the first screw web with its first projection , and
the shredded plastic material in the transfer area by means of the at least one first screw web directly into the further envelope defined by the at least one further screw web of the extruder screw
is promoted.
The advantage achieved thereby is that by arranging at least the further screw web of the extruder screw overlapping one another in the projection direction in the first circular ring surface defined by the projection of the first screw web, an even closer arrangement of the two intersecting longitudinal axes of the processing unit, in particular of the conveyor device, is also possible whose shaft body, and the extruder screw is achieved. The plastic material transported or transported by the first screw web of the conveying device is thus seen in the cross section of the conveying device directly into the working area of the extruder screw with its further screw web. The vertical transfer section in the transfer area is shortened by the preferred arrangement of the longitudinal axes crossing one another and the angular alignment thereof. Furthermore, starting from the first screw web of the conveying device, a directional positive conveyance of the comminuted plastic material is achieved directly into the extruder screw and the further or second screw web arranged thereon. This overlap of those formed by the screw flights
Conveying areas can thus on additional tamping and / or cutting tools
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Transfer area at the end of the conveyor can be dispensed with. Furthermore, the accumulation of plastic material in the transfer area from the conveying device to the plasticizing device is also reduced or prevented at all.
For a better understanding of the invention, this is based on the following
Figures explained in more detail. Each show in a highly simplified, schematic representation:
1 is a partial section of a processing plant in an axial vertical
cold cut through the processing unit;
FIG. 2 shows a radial section through the conveying device of the processing unit in the transfer area to the plasticizing device, according to lines H-IL in FIG. 1;
3 shows another possible embodiment of the processing plant in the transfer area in an axial vertical section through the processing plant.
unit as well as a graphic representation.
In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, the disclosures contained in the entire description being able to be applied analogously to the same parts with the same reference numerals or the same component names. The location information selected in the description, e.g. above, below, laterally, etc. related to the figure described and illustrated immediately and are these
to transfer information in the event of a change of position to the new position.
The term “in particular” is understood below to mean that it may be a more specific training or more specific specification of an object or a method step, but not necessarily an imperative, preferred embodiment of the same or a procedure
must represent.
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1 and 2, a processing plant 1 for plastic material, in particular for processing thermoplastic material for its recycling is simplified and shown only in sections. 3 also shows the processing plant 1, but with possible additional exemplary embodiments. The processing plant 1 is usually on a flat, preferably horizontally oriented contact surface, such as a hall floor,
set up.
Basically, such a processing plant 1 is used to first crush the mostly larger or large-volume plastic material in a processing unit 2 to a correspondingly smaller piece size to form a piece goods that can be further processed and then to melt it in a plasticizing device 3. The plastic material to be shredded can be formed by larger piece goods in the most varied of dimensions and sizes, foils, tapes or else piece pieces already pre-shredded. The melt stream melted by the plasticizing device 3 and emerging therefrom can or the emerging melt streams can be cooled after being shaped and granulated for later processing. Irrespective of this or in addition to this, it would also be possible to feed the melted plastic material directly to further processing and / or a corresponding shaping. The immediately following shaping can take place in a continuous or a discontinuous extrusion process or an injection molding process, in which case the amount of heat contained in the melt does not have to be removed first and then added again later. An additional preparation, cleaning
or the addition of additives is also possible.
The processing unit 2 is usually preceded by a feed device 4 which, in a known manner, serves to collect the plastic material to be processed and / or to be processed and to feed it to the processing unit 2. The supply can be automatically by the own weight and / or by means of a
additional feed device take place, which the not yet crushed
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Plastic material moved to the processing unit 2. A feed shaft is usually used to hold the plastic material to be processed and / or reprocessed, by means of which the forwarding to the reprocessing
unit 2 takes place.
The processing unit 2 can comprise a comminuting device 5 and a conveying device 6, the comminuting device 5 and / or the conveying device 6 preferably being accommodated in a preferably tubular or hollow-cylindrical housing 7 and being or being rotatably mounted. The mostly rotary drive can be equipped with at least one first drive means, such as e.g. an electric motor, optionally with the interposition of a transmission or the like. The conveying device 6 serves to convey the plastic material previously comminuted by the comminuting device 5 further in the conveying direction according to the arrow entered to a transfer area 8 which will be described in more detail later. In the transfer area 8, the plastic material having a further processable piece size is transferred from the conveyor device 6 to the plasticizing device 3 arranged downstream. The transfer area 8 is arranged on the side of the conveyor device 6 facing away from the comminution device 5 and thus forms the end of the conveyor path of the processing unit 2. The conveyor device 6, which preferably has a helical shape, is arranged downstream of the comminution device 5, viewed in the conveying direction. Furthermore, the conveying device 6 forms a first conveying section 9 and also defines a first longitudinal axis 10. In the region of the first conveying section 9, the conveying direction is illustrated by an arrow, with the further transport taking place in the axial direction. The first conveying section 9, as seen in the conveying direction, directly adjoins a comminuting section 11 defined by the comminuting device 5. With a horizontal alignment of the contact surface, the first longitudinal axis 10 has an alignment that preferably runs parallel to it. In order to
the first longitudinal axis 10 has a horizontal orientation.
Usually, at least the conveying device 6 and possibly also the cutting device
reduction device 5 formed by a central shaft body 12 and / or
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these are formed or arranged on the shaft body 12. For this purpose, at least one helical or helical first helical web 13 is provided on the outer circumference of the shaft body 12 to form the conveying device 6. The circumferential longitudinal course of the first screw web 13 can also be referred to as helical or helical. The comminution device 5 can be formed by cutting knives, not designated in any more detail, which are arranged or formed on the shaft body 12. The shaft body 12 can in turn also be tubular and supported in its interior on a bearing axis and / or rotatably supported thereon. The previously described first drive means is in contact with the shaft body 12.
drive connection.
In the present exemplary embodiment, the shaft body 12 is preferably designed to extend continuously over the comminution section 11 and the conveying section 9. The shaft body 12 can be composed as a one-piece component or else from several interconnected shaft body parts. For the sake of simplicity, it is referred to in its entirety as shaft body 12. A first bearing arrangement 16 and a second bearing arrangement 17 located opposite each other are provided on each of the two shaft ends spaced apart in the axial direction, namely a first shaft end 14 and a second shaft end 15. The first bearing arrangement 16 is arranged at the beginning of the shredding section 11 and the end of the shaft body 12 located here on the left side, and the second bearing arrangement 17 is arranged at the end of the shaft body 12 located here on the right side. A stable, two-section mounting of the shaft body 12 can thus be created. The accommodation and support of the respective bearing units of the bearing arrangements 16, 17 with the bearing or the bearings can be in the housing 7 or housing parts
treatment plant 1.
It would also be possible to arrange or form the first screw web 13 to form the conveying device 6 not directly on the shaft body 12, but on a sleeve or on a carrier tube 26, and this unit on the shaft body.
to be arranged per 12 and to hold it against rotation. This variant is on average
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the representation of Fig. 3 shown. In this case, the shaft body 12, the support tube 26 and the first screw web 13 form an associated structural unit. In this embodiment variant, the carrier tube 26 forms a component of the shaft body 12 as an intermediate piece and sets the outer circumferential
fende limitation of the shaft body 12.
The design of the processing unit 2 with its comminution device 5 and its conveyor device 6 can e.g. be selected as described in EP 0934 144 B1. Therefore, in order to avoid unnecessary repetition, reference is made to this description and reference is made here.
Men.
The first screw web 13 of the conveying device 6, which in this exemplary embodiment is preferably helical or helical, can either be continuous over the longitudinal extension and / or interrupted over the longitudinal extension. Furthermore, seen in the radial direction, the first worm web 13 projects beyond the shaft body 12 or the support tube 26 by a first projection 18 above it. The first protrusion 18 is calculated from the difference in the dimension (of the outer diameter) of an outer first envelope 34 of the first screw web 13 minus the outer diameter of the shaft body 12 or the support tube 26 in the region of the first conveying section 9 divided by two. The respective dimensions are in each case determined in a plane oriented in a normal orientation with respect to the first longitudinal axis 10. The first projection 18 further defines a circular ring width of a first one
Annular surface, the center of which lies in the first longitudinal axis 10.
The clear cross section of the hollow cylindrical housing 7 is preferably designed as a circular surface. The outer dimension (the outer diameter) of the first screw web 13 is selected to be slightly smaller than the clear cross section of the interior of the housing 7. In the area of the comminution device 5, at least one feed opening 19 open towards the feed device 4 is usually also arranged or formed in the housing 7 , by which
the plastic material can reach the shredding device 5.
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In order to transfer the comminuted plastic material from the processing unit 2, in particular the conveyor device 6, to the plasticizing device 3, at least one outlet opening 20 is provided in an end region or an end section of the first conveyor section 9 of the conveyor device 6 in the transfer region 8. In this exemplary embodiment, the at least one outlet opening 20 is arranged on the bottom in the housing 7. However, it would also be possible to arrange the outlet opening 20 above and / or to the side of the conveying device 6 in the housing 7. The respective position or arrangement of the at least one outlet opening 20 is dependent on the arrangement of the downstream plasticizing device.
Tung 3 to choose.
The plasticizing device 3 can have at least one extruder screw 21, which is accommodated in an extruder housing 22 and is rotatably mounted and can be set into a rotational movement about a further longitudinal axis 23 by means of a further drive means, likewise not specified. The at least one further drive means stands with the at least one
Extruder screw 21 in drive connection.
The at least one extruder screw 21 in turn defines the further longitudinal axis 23 and a further or second conveying section 24. At least one filling opening 25 is provided in the extruder housing 22 for taking over the comminuted plastic material. With a horizontal alignment of the contact surface, the further longitudinal axis 23 likewise has an alignment preferably running parallel thereto. The further longitudinal axis 23 thus also has a horizontal orientation. With regard to a projection onto a horizontal plane, the first longitudinal axis 10 and the further longitudinal axis 23 are aligned crossing one another in the transfer region 8. The included crossing angle between the two longitudinal axes 10, 23 can be chosen as desired. Mostly or preferably this is 90 °. The crossing angle can also be a
zero angle or an obtuse angle.
In this exemplary embodiment shown here, the outlet opening 20 arranged in the hollow cylindrical housing 7/7 and the outlet opening 20 arranged in the extruder housing 22 are
arranged filling opening 25 immediately adjacent to each other and
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together form a transfer opening 27. Since the outlet opening 20 is here on the bottom side and the plasticizing device 3 with its extruder screw 21 is arranged below the housing 7, the two openings 20, 25 are located one above the other and in a position that preferably overlaps one another. It is essential that the two openings 20, 25 are in flow connection with one another for the transfer and forwarding of the comminuted plastic material, and thus further transport of the plastic material to be processed is possible from the first conveying section 9 of the conveying device 6 to the further or second conveying section 24 of the plasticizing device 3. This transition is
preferably tightly trained.
The extruder screw 21 comprises on its outer circumference at least one further or second screw web 28, which is arranged or formed on a screw base 29, as can best be seen from FIG. 2. The further or second screw web 28 also projects in the radial direction by a further or second projection 30 above the screw
Base body 29 in front of or beyond.
The further or second projection 30 is calculated from the difference in the dimension (of the outer diameter) of an outer second or outer further envelope 35 of the further or second screw web 28 minus the outer diameter of the screw base body 29 in the region of the further 0 of the second conveying section 24 divided by two . The further or second projection 30 also defines a circular ring width of a further or second circular
annular surface, the center of which is arranged in the second longitudinal axis 23.
In the transfer area 8, the first longitudinal axis 10 of the processing unit 2, which is defined by the shaft body 12, and the further or second longitudinal axis 23 are arranged crossing one another. It should be mentioned that the directions of incline (left-handed or right-handed) can be freely selected for the conveying device 6 and also for the extruder screw 21. It can also the direction of rotation (clockwise, counterclockwise) of the conveyor 6 and / or
also the extruder screw 21 depending on the respective pitch direction
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tion can be selected. It is always important to ensure that the shredded plastic material is conveyed further in the conveying direction from the conveying device 6 into the transfer area 8 and further into the plasticizing device 3. In the transfer area 8, a direction of rotation (direction of rotation) of the conveying device 6 with respect to the direction of conveyance of the extruder screw 21 can also be selected, which is either in the same direction of rotation (direction of rotation)
direction) or the opposite direction of rotation (direction of rotation)
is.
Furthermore, it is also provided here that in the transfer area 8 the further screw web 28 projecting beyond the screw base body 29 is seen in the first projection 18 defined by the first screw web 13 during an axial projection in the direction of the first longitudinal axis 10 of the processing unit 2, in particular its shaft body 12 , protrudes. The approach of the extruder screw 21 with its outer further envelope 35 around the further or second screw web 28 can take place at least to the extent that the outer further envelope 35 is immediately adjacent to the shaft body 12 or the support.
gerrohr 26 is arranged.
In order to avoid a collision of the first screw web 13 of the conveying device 6 with the extruder screw 21 and the further or second screw web 28 located thereon, the first screw web 13 ends, seen in the axial direction of the first longitudinal axis 10, preferably immediately before that of the further or
the outer outer shell 35 defined by the second screw flight 28.
By protruding at least the further or the second screw web 28 and possibly also a partial section of the screw main body 29 into the first annular surface defined by the first projection 18 of the first screw web 13 over the circumference, the shaft body 12 can be supported on both sides thereof the two shaft ends 14, 15 spaced apart from one another in the axial direction, the plastic material conveyed from the first screw web 13 into the transfer area 8 directly into the working area of the extrusion
derschnecke 21 with the further or second screw web attached to it
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28 are funded. In this way, the transfer and further transport in the transfer area 8 become even more secure, and the transfer opening 27 in the area between the two housings 7, 22 can be clogged or blocked almost to completely.
dig be avoided.
As shown in FIG. 3 as a further possible, possibly independent or independent embodiment variant, a guide element 31 can also be provided in the transfer area 8 starting from the conveying device 6 to the plasticizing device 3. The guide element 31 is designed as an annular body and is arranged on the shaft body 12 and / or the support tube 26. A rotationally fixed connection to the shaft body 12 and / or the support tube 26 can be provided, but need not be. The guide element 31, viewed in the axial direction, is arranged on the side of the conveying device 6 facing away from the comminution device 5 on the shaft body 12 and is therefore located in the region of the second shaft end 15 and thus faces the second bearing arrangement 17. Furthermore, the guide element 31 is located with respect to the cross section of the extruder
screw 21 seen on the side facing away from the conveyor 6.
A cross section of the guide element 31 in axial section with respect to the first longitudinal axis 10 is formed slightly smaller in its section facing the extruder screw 21 than the outer further envelope 35 defined by the further screw web 28. Between the guide element 31 and the interior of the housing 7 there can also be a sealing arrangement 32 be provided in order to reduce or even prevent passage of plastic material to the second bearing arrangement 17. Depending on the selected direction of rotation or the selected direction of rotation of the extruder screw 21, an even better transfer into the plasticizing device 3 can thus be achieved. The guide element 31 thus has, in its partial section facing the extruder screw 21 in axial section, a fillet, the radius of which is slightly larger than a radius of
outer further envelope 35 of the further screw flight 28.
To an even closer arrangement of the two longitudinal axes 10, 23 to each other
and to reduce the distance in their intersection area, it would be
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additionally or independently of this, it is also possible to provide or form a recess 33 in the surface of the shaft body 12. This can be done with sufficient strength of the shaft body 12 so as not to weaken it too much. The cross section of the circumferential depression is the cross section of the outer further envelope 35 of the further or of the second cutting edge.
ckenstegs 28 to adapt.
The recess 33 has a concave curvature in the axial section through the first longitudinal axis 10, a radius of the recess being slightly larger than a radius of the outer further envelopes 35 defined by the further screw web 28 in the same plane. In order to be able to carry out an unimpeded rotational movement of the feed device 4, in particular its shaft body 12, the depression 33 is to be designed as a groove-shaped depression extending over the circumference. This previously described embodiment variant with the recess 33 is shown in FIG. 1 on the side of the plasticizing device 3 opposite
Shaft body 12 indicated with a dashed line.
The two envelopes 34, 35, which are each defined by the outer end faces of the respective screw web 13, 28, are imaginary cylindrical surfaces, the center of which lies in the respective longitudinal axis 10, 23 and the cross section of which is in a normal direction with respect to the longitudinal axis 10, 23 aligned level. The further envelope 35 of the further screw web 28 of the extruder screw 21 can also be referred to as the second envelope 35. In relation to the two previously described circular ring surfaces, whose circular ring width is defined either by the first projection 18 or by the further or the second projection 30, the envelopes 34, 35 are each arranged to run around the outer circumference of the respective circular ring surface. The circular ring surface, which is defined by the first projection 18, is referred to as the first circular ring surface. Those circular or defined by the further or the second overhang 30
ring area is referred to here as a further or second circular ring area.
The exemplary embodiments show possible design variants, with this one
It should be noted that the invention is not based on the specifically illustrated embodiments.
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Ration variants of the same is limited, but rather various combinations of the individual design variants with each other are possible and this variation possibility due to the teaching of technical action through objective invention in the ability to do in this technical field
Expert lies.
The scope of protection is determined by the claims. However, the description and drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. The independent inventive solutions
basic task can be found in the description.
All information on value ranges in the objective description should be understood to include any and all sub-areas, e.g. the information 1 to 10 is to be understood in such a way that all sub-areas, starting from the lower limit 1 and the upper limit 10, are included, i.e. all sections start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements are sometimes to scale and / or enlarged
and / or were scaled down.
21736 N2018 / 27500-AT-00
21
Reference list
Processing unit Processing unit Plasticizing device Feeding device Crushing device Conveying device Housing Transfer area
first conveyor section first longitudinal axis shredding section shaft body
first worm web first shaft end second shaft end first bearing arrangement second bearing arrangement first protrusion feed opening outlet opening extruder screw extruder housing further longitudinal axis further conveying section filling opening carrier tube transfer opening further worm web screw base body
further supernatant
31 32 33 34 35
Guide element sealing arrangement recess
first envelope
further envelopes
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权利要求:
Claims (8)
[1]
1. Preparation plant (1) for plastic material, in particular for the preparation of thermoplastic material for its recycling, comprising
- a feed device (4),
- A processing unit (2) with
- a hollow cylindrical housing (7),
- A shaft body (12), with a comminution device (5) arranged or formed on the shaft body (12) and a conveying device (6) adjoining the comminution device (5) in the conveying direction, comprising at least a first screw web (13),
- wherein the shaft body (12) defines a first longitudinal axis (10),
- Wherein the first screw web (13) projects beyond the shaft body (12) in the radial direction by a first projection (18) and from the first projection (18) a first annular surface with an outer first envelope (34) is defined, an annular width of the first Annular surface corresponds to the first projection (18),
- wherein the conveying device (6) defines a first conveying section (9) in the axial direction of the shaft body (12),
- wherein the shaft body (12) is accommodated in the housing (7) and on its first shaft end (14) by means of a first bearing arrangement (16) and on its second shaft end (15) spaced axially therefrom by means of a second bearing arrangement (17) on the housing ( 7) is rotatably mounted, and
- The housing (7) in the region of the shredding device (5) has at least one feed opening (19) open towards the feed device (4),
- a plasticizing device (3) with - an extruder housing (22), - at least one extruder screw (21), comprising a screw
corner base body (29) and at least one further screw flight (28),
N2018 / 27500-AT-00
- The at least one further screw web (28) of the extruder screw (21) defines an outer, further envelope (35),
- The extruder screw (21) is accommodated in the extruder housing (22) and defines a further longitudinal axis (23), and
- The at least one extruder screw (21) defines a further conveying section (24) and, seen in the conveying direction, the plasticizing device (3) is arranged downstream of the processing unit (2), - A transfer area (8) with an outlet opening (20) from the housing (7 ) and a filling opening (25) in the extruder housing (22), the transfer area (8) being arranged in an end section of the first conveyor section (9) of the conveyor device (6) and the first conveyor section (9) in the transfer area (8) with the second conveying section (24) is in flow connection, and - wherein with respect to a projection onto a horizontal plane the first longitudinal axis (10) and the further longitudinal axis (23) are aligned crossing each other in the transfer area (8), characterized in that - at least the further screw web (28) of the extruder screw (21), seen in the axial projection direction in the direction of the first longitudinal axis (10) of the shaft body (12), in the direction of the first Longitudinal axis (10) in the first defined by the first screw web (13) with its first projection (18)
Annular surface protrudes.
[2]
2. Processing plant (1) according to claim 1, characterized in that a partial section of the screw base body (29) of the extruder screw (21) in the from the first projection (18) of the first screw web (13) defined
first circular ring surface protrudes.
[3]
3. Processing plant (1) according to claim 1 or 2, characterized in that a carrier tube (26) is provided, on which carrier tube (26) the
the first screw web (13) is arranged or formed and the carrier tube (26)
24/36 N2018 / 27500-AT-00
arranged on the shaft body (12) and rotatably fixed with the shaft body (12)
ner related unit is connected.
[4]
4. Processing plant (1) according to one of the preceding claims, characterized in that the outer further envelope (35) of the further screw web (28) of the extruder screw (21) immediately adjacent to the world
steering body (12) of the processing unit (2) is arranged.
[5]
5. Processing plant (1) according to one of the preceding claims, characterized in that the first screw web (13) seen in the direction of the first longitudinal axis (10) before that of the further screw web (28) defining
th outer outer envelope (35) ends.
[6]
6. Processing plant (1) according to one of the preceding claims, characterized in that a guide element (31) is provided, which guide element (31) in the axial direction on the side of the conveyor device (6) facing away from the comminution device (5) on the shaft body (12 ) is arranged and its cross section, seen in axial section, is made slightly smaller in its section facing the extruder screw (21) than that of the wider
Ren worm web (28) defined outer further envelope (35).
[7]
7. Processing plant (1) according to one of the preceding claims, characterized in that a recess (33) is provided in the shaft body (12), which recess (33) is formed continuously over the circumference of the shaft body (12) and its cross section in axial section seen in the section facing the extruder screw (21) is slightly larger than the outer, further envelope (35) defined by the further screw web (28).
[8]
8. Process for the preparation of plastic material, in particular
thermoplastic material for its recycling, by means of a
N2018 / 27500-AT-00
Processing plant (1) comprising the following steps:
- Providing a feed device (4), the plastic material to be processed being fed in at the feed device (4),
- Providing a processing unit (2) with
- a hollow cylindrical housing (7),
a shaft body (12) with a comminution device (5) arranged or formed on the shaft body (12) and a conveying device (6) adjoining the comminution device (5) in the conveying direction, comprising at least a first worm web (13),
- wherein the shaft body (12) defines a first longitudinal axis (10),
- Wherein the first screw web (13) projects beyond the shaft body (12) in the radial direction by a first projection (18) and from the first projection (18) a first annular surface with an outer first envelope (34) is defined, an annular width of the first Annular surface corresponds to the first projection (18),
- A first conveying section (9) being defined by the conveying device (6) in the axial direction of the shaft body (12),
- wherein the shaft body (12) is accommodated in the housing (7) and on its first shaft end (14) by means of a first bearing arrangement (16) and on its second shaft end (15) spaced axially therefrom by means of a second bearing arrangement (17) on the housing ( 7) is rotatably mounted, and
- The housing (7) in the region of the shredding device (5) has at least one feed opening (19) open towards the feed device (4), and
- The plastic material to be processed is crushed by the comminution device (5) and is conveyed by means of the at least one first screw web (13) of the conveying device (6) along the first conveying section (9) in the direction of the second shaft end (15),
- Providing a plasticizing device (3) with - an extruder housing (22), - at least one extruder screw (21), comprising a screw
corner base body (29) and at least one further screw flight (28),
N2018 / 27500-AT-00
- The at least one further screw web (28) of the extruder screw (21) defines an outer, further envelope (35),
- The extruder screw (21) is accommodated in the extruder housing (22) and defines a further longitudinal axis (23), and
- The at least one extruder screw (21) defines a further conveying section (24) and, seen in the conveying direction, the plasticizing device (3) is arranged downstream of the preparation unit (2), - Providing a transfer area (8) with an outlet opening (20) from the housing ( 7) and a filling opening (25) into the extruder housing (22), the transfer area (8) being arranged in an end section of the first conveying section (9) of the conveying device (6) and the first conveying section (9) in the transfer area (8) the second conveying section (24) is in flow connection, - with respect to a projection onto a horizontal plane the first longitudinal axis (10) and the further longitudinal axis (23) in the transfer area (8) are aligned crossing one another, and - whereby that of the conveying device (6 ) conveyed plastic material in the transfer area (8) to the plasticizing device (3) and at least one extruder screw (21) is transferred, in particular under V Use of the processing plant (1) according to one of the preceding claims, characterized in that the at least one further screw web (28) of the extruder screw (21), viewed in the axial projection direction in the direction of the first longitudinal axis (10) of the shaft body (12), is such it is arranged that the at least one further screw web (28) projects in the direction of the first longitudinal axis (10) into the first circular ring surface defined by the first screw web (13) with its first projection (18), and - that the comminuted plastic material in the transfer area ( 8) by means of the at least one first screw web (13) directly within the white line defined by the at least one further screw web (28) of the extruder screw (21)
tere envelope (35) is conveyed into it.
N2018 / 27500-AT-00

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同族专利:

公开号 | 公开日

AT522051B1|2021-04-15|

JP2022512214A|2022-02-02|

TW202031445A|2020-09-01|

KR20210106985A|2021-08-31|

WO2020124110A1|2020-06-25|

EP3898160A1|2021-10-27|

CN113453861A|2021-09-28|

US20220001579A1|2022-01-06|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

CH450696A|1967-06-13|1968-01-31|Buss Ag|Mixing and kneading device|

DE2457546A1|1973-12-10|1975-06-19|Intercole Automation Inc|CONTINUOUSLY WORKING MIXING DEVICE|

DE19714944A1|1996-10-14|1998-04-16|Gerold Ing Barth|Processing device for crushing and conveying thermoplastic material|

CN2905411Y|2006-01-25|2007-05-30|夏永泽|Vacuum pipeline spiral pusher for vacuum extrusion forming machine|

GB1159963A|1965-08-16|1969-07-30|Ici Ltd|Processing of Polyurethane Foam|

AT385234B|1984-08-01|1988-03-10|Paracon Extrusionstech Gmbh|DEVICE FOR PROCESSING THERMOPLASTIC PLASTIC MATERIAL|

GB2269149B|1992-07-21|1995-07-12|Courtaulds Packaging Ltd|Screw feed mechanism|

US6126100A|1996-10-14|2000-10-03|Barth; Gerold|Processing device for crushing, conveying and plastifying thermoplastic synthetic material|

JP2005324522A|2004-05-17|2005-11-24|Japan Repro-Machine Industries Co Ltd|Volume reduction device for thermoplastic polymer piece|

AT504326B8|2006-10-30|2008-09-15|Next Generation Recyclingmasch|DEVICE FOR PREPARING THERMOPLASTIC PLASTIC MATERIAL|

AT512149B1|2011-10-14|2015-02-15|Erema|DEVICE FOR PREPARING PLASTIC MATERIAL|

AT517262A2|2015-06-03|2016-12-15|Next Generation Recyclingmaschinen Gmbh|Processing plant for plastic material|CN112223711A|2020-09-27|2021-01-15|金寨宏伟新材料有限公司|Material guiding and extruding device for nylon heat insulation strip production and extruding method thereof|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

ATA51131/2018A|AT522051B1|2018-12-19|2018-12-19|Processing plant and process for processing plastic material for its recycling|ATA51131/2018A| AT522051B1|2018-12-19|2018-12-19|Processing plant and process for processing plastic material for its recycling|

EP19835584.4A| EP3898160A1|2018-12-19|2019-12-06|Processing plant and method for processing plastics material for the recycling thereof|

US17/291,708| US20220001579A1|2018-12-19|2019-12-06|Processing plant and method for processing plastics material for the recycling thereof|

TW108144732A| TW202031445A|2018-12-19|2019-12-06|Processing plant and method for processing synthetic material for its recycling|

PCT/AT2019/060417| WO2020124110A1|2018-12-19|2019-12-06|Processing plant and method for processing plastics material for the recycling thereof|

JP2021533281A| JP2022512214A|2018-12-19|2019-12-06|Processing plants and methods for recycling plastic materials|

KR1020217014909A| KR20210106985A|2018-12-19|2019-12-06|Treatment plants and methods for recycling plastic materials|

CN201980077817.XA| CN113453861A|2018-12-19|2019-12-06|Processing device and method for processing plastic material for recycling said plastic material|

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