EP0366936A2 - Method and apparatus for making highly compressed cylindrical articles from cut crop - Google Patents

Abstract

The invention relates to a method and a device for producing highly compressed cylindrical compacts (11) from loose stalk material, such as hay or straw, which is continuously taken up and compressed to form a rotating press strand which flows continuously in the axial direction, with the front end of the press strand in each case successive individual extruded sections (compacts) are separated. For the production of dimensionally stable compacts of different lengths, it is proposed according to the invention that to produce dimensionally stable compacts with a choice of different lengths, the extrusion still under radial pressure during its axial advance and before the separation (16) of a compact with a binder (15) fed under tension using the Press strand rotation and the feed is automatically wrapped.

Description

The invention relates to a method for producing high-density cylindrical compacts from loose stalk material, such as hay or straw, which is continuously taken up and compacted to form a rotating press strand which flows continuously in the axial direction, with individual press strand sections (compacts) successively ending from the front end of the press strand. be separated.

The invention further relates to a pick-up press working according to the winding principle for producing high-density cylindrical compacts from loose stalk material, such as hay or straw, or from other materials, in particular for carrying out the above-mentioned method, consisting of one end face formed by a plurality of pivotable press rolls open winding space to be loaded on the circumferential side to produce a press strand flowing out in axial and continuous feed on the open end face and a separating device for dividing the press strand into individual compacts.

The invention is thus based on the previously known briquetting presses, the term “compact” used above being used for the highly compressed stalk crop briquettes produced by a briquetting press, which usually have a diameter of 10 to 15 cm and a length corresponding to this diameter. The density of such straw briquettes is between 350 and 500 kg / m³, in extreme cases even around 800 kg / m³.

A briquetting press of the type described in the introduction can be found, for example, in US Pat. No. 3,244,088. The changing room is e.g. formed by six press rolls that can be pivoted with respect to the winding space axis. In addition, the winding space is to be given a slightly conical design in order to facilitate the exit of the rotating press strand which is continuously axially conveyed out of the winding space. The pressing strand emerging from the winding space is separated into individual briquettes directly behind the winding space by a separating device, the length of which in the exemplary embodiment shown can also be shorter than its diameter.

A comparable briquetting press can be found in DE-A-1 176 418. Here the winding space is formed by four or five press rolls, which define a conical winding space and are subject to a positive drive. As a result of the conical expansion of the winding space, the wound material is continuously rotated out of the winding space and pressed into a cylinder, where it is braked by adjustable springs. Cylinders and springs rotate in the same sense and at the same speed as the material flow. Handy briquettes are then separated from the material strand, with the help of tear-off teeth, which reach through the longitudinal slots of the cylinder jacket. During the tear-off process, the springs mentioned also serve the purpose in the Retain the remaining wrapping bale against the action of the tear teeth.

DE-A1-36 09 631 also discloses a comparable briquetting press, in which separating knives are successively pressed radially into the press strand emerging from the winding space, which protrude radially from a cutting wheel which is carried along by the knives from the feed of the press strand and thereby cuts compacts . With this entrainment of the cutting wheel, the knives are pressed relatively slowly into the press strand, which is carried for this purpose by two pairs of conveyor rollers. The conveyor rollers thus form the abutment for the considerable pressure to be applied by the knives. This pressure is difficult to absorb by the conveyor rollers, since gaps must necessarily remain between the conveyor rollers, through which the stalk material of the press strand can be squeezed. This results in the risk of the press strand or the briquettes being dissolved.

All these briquetting processes and presses have the following disadvantage in common: As a result of the rotation of the press strand and the centrifugal forces acting on the crop as a result, and as a result of the separating forces exerted by the separating element on the press strand, the winding briquettes are loosened, especially on their surface, in such a way that they loosen up during the process Separate, but dissolve largely at the latest in the subsequent handling and are therefore unusable for the farmer. Because of this disadvantage, development work carried out for decades and worldwide in science and industry on continuously working collecting briquetting presses or winding devices with an axially emerging press strand and subsequent separating device for this press strand has not gone beyond the experimental stage and has finally been completely abandoned in practice.

The so-called large roller bale presses belong to a machine category to be distinguished from the briquetting presses. These presses, which are widely used in practice, produce roller bales that usually have a diameter of 100 to 150 cm and a dry matter density of only about 100 to 120 kg / m³. For example, DE-A2-2 443 838 a discontinuously operating roller baler, in which the finished bale located in the wrapping room is wrapped several times with a binder, a thread or a mat made of net or film. The wrapped bale is removed from it by pivoting the rear part of the wrapping space housing; then the changing room is closed again. The machine must be brought to a standstill during the setting and opening and closing of the changing room.

EP-A3-0 268 002 discloses a continuously operating roller baler, the conical press space of which is formed by a plurality of press rolls, for example 16. The baling chamber, which is open on the end face of larger diameter and is to be loaded on the circumferential side, is used to produce a press strand flowing out on the open end face in axial and continuous feed, the diameter of which corresponds to that of conventional roller bales. Directly downstream of the exit from the press chamber is a cylindrical conveyor section, the jacket of which is formed by driven conveyor rollers, which are arranged with their axes of rotation parallel to one another and together define a conveyor channel, the diameter of which approximately corresponds to that of the press strand emerging axially from the press chamber. Behind the press chamber and in the region of the conveyor section, a binding device is provided for binding the press strand, which is still under radial pressure, during its axial advance with a binding agent fed between two of the said conveying rollers. Followed up the binding device Tet is a separating device, which can either be arranged in the area of said conveyor section or directly behind it.

The invention has for its object to develop a method and a device with which compacts, that is, highly compressed stalk briquettes can be produced, which are so dimensionally stable that the length of the compacts produced can be a multiple of their diameter.

This object is achieved with respect to the method in that, in order to produce dimensionally stable compacts with optionally different lengths, the extrusion still under radial pressure during its axial advance and before the separation of a compact with a binder supplied under tension, using the extrusion rotation and the - Feed is automatically wrapped.

The object underlying the invention is achieved with respect to the device in that the winding space has approximately the same diameter over its axial length, and that in front of the separating device in the end region of the winding space, but at least immediately behind the winding space, a binding device for tying the press strand still under radial pressure during its axial feed with a binder supplied under tension as a thread, tape, net or film, made of plastic or other, for example feedable material is arranged, with a single winding unit being able to produce dimensionally stable compacts, the length of which corresponds approximately to their diameter (straw briquettes) or is a multiple of their diameter (compact rolls).

With the method according to the invention or the device according to the invention, a completely new product can thus be produced, which can be called a compact roll, which is also intended to be covered by the term "compact". This is a product which has the high density of the previously known stalk briquettes, but can be produced in a length of several meters due to the dimensional stability which has so far not been achievable, but surprisingly achieved according to the invention. If the compact rolls consist of material that can be ensiled, such a compact roll can produce excellent silage as a result of the extensive opening of the straws, which is advantageous in terms of feeding technology and associated with pressing, and due to the density in the compact roll, which is about twice as high as in conventional chopped material silos. The silage quality can be further improved by connecting a processing device, for example a pair of squeeze rollers, upstream of the winding unit. By binding the press strand with film and by attaching caps, for example made of film or plastic, on both end faces of the compact and inside the machine, machine-made "small silos" can be produced in the form of compact rolls. As a result of the high baling density that can be achieved, completely new processes can be created for the straw fodder harvest: Significant reduction in transport and storage space requirements; Transport of compact rolls made of straw for combustion purposes over long distances; new loss and space-saving hay harvest and silage preparation. Longer compact rolls can also be used for construction purposes, especially in developing countries.

Due to the tying of the press strand taking place during its axial advance, there are a number of significant advantages: the wrapping briquettes or the compact rolls, because of the tying that takes place before they are separated from the press strand, take away the possibility of loosening up during the severing or subsequent handling or even dissolve, so that centrifugal forces and especially those when cutting or at the subsequent destructive influences that occur later are completely eliminated. In addition, the stem length does not matter at all, which in the known continuously operating winding briquetting presses must not be less than a critical length because of the internal cohesion of the winding briquettes required for this, so that in particular briquetting of Grummet was practically impossible. So far, types of stalks, such as straw, have not been able to be processed at all, while, according to the invention, dimensionally stable compacts can also be produced from this material. Since the compacts can also have a much larger diameter than the previously known winding briquettes, the device according to the invention has a significantly higher throughput and thus a particularly advantageous increase in machine output for agriculture.

In terms of the device, it is particularly advantageous that one and the same machine can be used to produce either high-density stalk briquettes or high-density compact rolls of different lengths. Both options lead to a reduction in transport and storage space requirements to 1/3 to 1/4 of the values usual for roller bales. While in the discontinuously operating roller balers in one machine two wrapping units or other very complex solutions have to be used in order to achieve a continuous mode of operation, the machine according to the invention allows a continuous mode of operation with only a single wrapping unit. The solution according to the invention for the device with a constant wrapping space diameter follows the opposite tendency, as is common today in the construction of roller balers. While according to the invention the size of the compacts can be varied by changing their length, the tendency has prevailed in roller baler construction with a single one Machine roll to produce bales that have different diameters with the same roll bale length.

According to the invention, it is expedient if the separation of a compact takes place as a function of a measurement of the extruded strand feed that is carried out continuously. It is advantageous if the feed measurement mentioned is used to control the extrusion winding.

The wrapping of the press strand is preferably carried out continuously helically, which is preferably designed according to the device according to the invention such that the binding device arranged fixed to the frame automatically wraps the press strand continuously with the binder through the rotation and the advance of the press strand in a helical manner. Because of the frame-fixed binding device, which together with the axial advance of the press strand leads to automatic, helical wrapping of the press strand, on the one hand there is a simple construction and, on the other hand, a low binder requirement, since the individual turns of the binder have a corresponding effect, particularly when processing longer crops Can keep distance from each other. If a tape is used as a binder, there is the advantage that it can be wound with only a small distance in terms of its windings, so that there is practically a single-layer covering of the compact.

According to the invention, however, it is also possible for the pressing strand to be wrapped discontinuously using a binder, the width of which covers a substantial part of the length of the compact. The binder here can in particular be a mesh or a film. Because this is a tight over coverage of the compact with the binder, this type of wrapping is particularly advantageous for particularly short crops.

In order to avoid that the binding device continues to work unnecessarily in the event of failure of the press strand feed, it is advantageous if the wrapping of the press strand is interrupted if the press strand feed fails. For this purpose, the binding device can be switched off manually or automatically.

In order to allow the separating device to interact harmoniously with the advance of the press strand, it is advantageous if the separating device consists of a pivotable separating element (rotating cutting disc, oscillating separating knife, double-knife cutting mechanism, chainsaw), which is coupled to the press strand during the separating process in such a way that that it participates in its feed, and its pivoting can be controlled so that compacts of different lengths (stalk material briquettes, compact rolls) can be separated. Due to this running of the separating element with the press strand, there is no axial jamming between the separating element and the press strand. The separating element cuts into the pressed strand, which is kept in shape by the binding, with simultaneous separation of the binding, the binding of the separated compact being retained on the crop.

To determine the press line feed for triggering the separating device and / or the control of the binding device, a trigger wheel driven by the feed of the press line can preferably be arranged in the axial plane of the press line, which carries circumferential star wheels arranged perpendicular to its plane, which the Start rotation of the press strand.

According to the invention, a device can be provided which pivots the press rolls in dependence on the press pressure in the winding space, the control preferably taking place in dependence on the drive torque of the press.

For the transport of the crop briquettes, a removable elevator or a removable throwing device for conveying the crop briquettes can be arranged on the frame of the collecting press. These additional organs are only required if the stalk briquettes are not to be thrown directly onto the ground. In addition, it is possible to attach a removable device for collecting, bundling and dropping a large number of compact rolls to the frame of the collecting press. Such an additional device allows larger units to be charged and retracted immediately.

• Fig. 1 einen Querschnitt durch die Elemente einer im Längs-Querfluß nach dem Wickelprinzip arbeitenden Aufsammelpresse von im wesentlichen bekannter Bauart,
• Fig.2 eine Draufsicht auf eine im Längs-Querfluß arbeitende Aufsammelpresse mit außerhalb des Wickelraums angeord­neter Bindeeinrichtung,
• Fig. 3 eine Draufsicht auf eine im Längs-Querfluß arbeitende Aufsammelpresse mit im letzten Abschnitt des Wickel­raums angeordneter Bindeeinrichtung und angebautem Brikett-Elevator,
• Fig. 4 eine Draufsicht auf eine im Quer-Längsfluß arbeitende Aufsammelpresse mit angebauter Kompaktrollen-­Sammel- und Bündelvorrichtung,
• Fig. 5 einen Querschnitt durch die Sammel- und Bündelvor­richtung,
• Fig. 6 eine Seitenansicht der Bindeeinrichtung und der Auslöse- und Trennvorrichtung,
• Fig. 7 eine Draufsicht auf die Bindeeinrichtung und die Auslöse- und Trennvorrichtung,
• Fig. 8 einen Querschnitt durch eine Alternativlösung für die Trennvorrichtung,
• Fig. 9 die Seitenansicht der alternativen Trennvorrichtung.

Some exemplary embodiments of the invention are shown in the drawing. Show it:

• 1 shows a cross section through the elements of a collecting press of essentially known type working in the longitudinal cross flow according to the winding principle,
• 2 shows a plan view of a collecting press working in the longitudinal cross flow with a binding device arranged outside the winding space,
• 3 shows a plan view of a collecting press working in the longitudinal cross flow with a binding device arranged in the last section of the winding space and a briquette elevator attached,
• 4 is a plan view of a collecting press working in the transverse longitudinal flow with attached compact roller collecting and bundling device,
• 5 shows a cross section through the collecting and bundling device,
• 6 is a side view of the binding device and the release and separation device,
• 7 is a plan view of the binding device and the release and separation device,
• 8 shows a cross section through an alternative solution for the separating device,
• Fig. 9 is a side view of the alternative separation device.

The pick-up press shown in the examples of FIGS. 1, 2 and 3 consists (FIG. 1) of a winding unit 1 with a plurality of press rollers 2, which form the winding space 3 represented by the dash-dotted circular line. The stalk material picked up by the collector 4 is fed to the winding space 3 via the feed screws 5, the pair of pre-press rollers 6 and the feed roller 7.

Since all press rolls 2 have to rotate in the same direction to form the press strand 11, behind the lower press roll 6 is not as usual previously - a press roll of the same size corresponding to the other press rolls 2 is arranged, which then have a direction of rotation opposite to the lower pre-press roll 6 and would hinder the supply of material . Rather, it has proven to be useful Instead of a press roll 2 of the same size, a feed roll 7 arranged immediately behind the lower pre-press roll 6 of the same direction of rotation as the pre-press roll 6 and behind it to arrange a smaller press roll 2 of the opposite direction of rotation.

The pressing rollers 2 (FIG. 2) are driven from the tractor PTO shaft 8, the chain drive 9 and the cardan shafts 10. The pressing rollers 2 are known from the device in a known manner as a function of the pressing pressure in the winding room in Fig. 2 axis-parallel position pivoted out so that their axes are at an oblique angle to the winding space axis. For reasons of clarity, this pivoting of a few degrees is not shown. The pivoting takes place by rotating the bearing plate for the press rolls, which is rotatably arranged on one side of the winding space 3. When the press rolls are pivoted, the tangentially supplied and compacted straw material in the winding space 3 is conveyed axially out of the winding space in the form of a continuously flowing rotating press strand 11 (FIG. 2). The press strand 11 is received by tubes or rollers 42 arranged on a frame-fixed frame (FIGS. 6 and 8).

According to FIG. 2, the binding device 12 is arranged immediately behind the changing space 3; it has the mechanically driven or loosely rotating guide rollers 13 (FIG. 2) driven by the rotating press strand 11, to which the binding agent, a thread or a narrow band 15 made of net or film is fed from a supply reel 14. As a result of the rotation and feed of the press strand 11, which is under pressure from the guide rollers, the binder automatically and continuously wraps around the press strand 11. With a suitable choice of the bandwidth, the helical binding can be predetermined in dependence on the speed and feed of the press strand 11 so that the band edges slightly over rag. The thus bound, from the binding device 12 emerging extrudate 11 is then by a separating device 16 - for example by a pivoting and during the cutting process participating in the advance of the extrudate 11 rotating cutting disc 33 (Fig. 6 and 7) - in any length compacts (11 a in Fig. 2 or 11 b in Fig. 4) divided. The desired length of the compacts is set and measured using a release wheel 17 (see description of FIGS. 6 and 7).

In the manner described, both with the embodiment of the machine according to FIGS. 2 and 3 (longitudinal cross-flow type) and with the embodiment according to FIG. 4 (cross-longitudinal flow type) with a single winding unit, optionally dimensionally stable, high-density straw briquettes 11 a are produced, the length of which corresponds approximately to their diameter, or - with a different setting of the release wheel 17 - compact rollers 11b, the length of which can be a multiple of their diameter (in practice approximately 1-2 m). The straw-like briquettes 11 a, which are similar to bulk material, can easily be conveyed with an attachable elevator 18 (FIG. 3) or a known centrifugal device (not shown) onto the car attached to the collecting press. Longer compact rolls 11 b can be collected and bundled with an attachable device 19, 19 a (FIGS. 4 and 5), which is not described in detail, so that the bundle dropped onto the field can be picked up and loaded with the front loader. For example, one of the binding devices 19 a known in press construction can be used for bundling.

Fig. 3 shows a pick-up press, in which the binding device 12 is not arranged outside the changing room, but in the last part of the changing room itself. As a result, the guide rollers 13 (FIG. 2) can be saved _.

On the other hand, it is possible to design the guide rollers 13 arranged outside the wrapping space 3 to be substantially longer than shown in FIG. 2, and the press strand 11 outside the wrapping space 3 in the case of roller balers known manner dl continuously with a wider binder 15, ie with a net or a film, the width of which covers a substantial part of the length of the compact 11 a, 11 b. Preferably, for example, a thread provided with barbs or a narrow band 15 made of net or foil is used for binding. In normal, continuous swath picking, such a binder 15 wraps the press strand 11 automatically and continuously without interruption. With shorter interruptions in the crop supply and thus the extrusion feed - such. B. when driving over imperfections in the swath - the binder supply does not need to be interrupted, since the somewhat larger number of layers then occurring at one point of the compact does not later have a disruptive effect, and since the resulting increase in binder 15 consumption is only insignificant. In the event of a long interruption - such as when driving on the headlands - however, the tape feed is interrupted by a manually or automatically operated device; by means of the same device, the strip 15 is then fed to the press strand 11 again when the crop is supplied again.

The binding device 12 is shown together with the separating device 16 in FIGS. 6 and 7. The binder 15 is fed from the supply reel 14 via brake rollers 20, the feed roller 21 and the driven feed roller 22 into the gap between the guide plate 23 and one of the guide rollers 13. If the supply of material is interrupted for a long time, ie if there is no axial extension of the press strand 11, the supply of the binder 15 is interrupted by pivoting the impact knife 24 (counterclockwise) about the axis 25 and simultaneously pivoting the pressure roller 26 (clockwise) around the axis 27 . The percussion knife 24 separates the part of the binder 15 enveloping the press strand from the end of the binder fed by the supply spool. When the supply of material and the press strand feed are reinserted, the binding is initiated again by pivoting the pressure roller 26 against the feed roller 22 wrapped in the binding agent 15. The fly knife 24 is simultaneously pivoted back into the position shown in FIG. 6. After the binder 15 has been detected due to friction against the press strand 11 and guide rollers 13 by both, the above be continued binding automatically. The binding agent prestress can be set on the brake rollers 20 in a manner known per se. Start and interruption of the binding process can be controlled in the manner known in the case of roller balers, not shown here, by mechanical or electromagnetic actuating means, both manually by the tractor driver and automatically by the switching wheel 17.

The release device 16 is triggered by the release wheel 17 (FIGS. 6 and 7). It consists here of a disk which can be freely rotated about the axis 27, on the circumference of which rotatable star wheels 28 are arranged perpendicularly to its plane, which engage in a form-fitting manner in the press strand 11 and record its rotary movement. The trigger wheel 17 is rotated about its axis 27 by the press line feed, the respective angle of rotation being a measure of the length of the feed of the press line 11. The triggering point and thus the length of the compact can be varied by attaching switching cams 29 at various points along its circumference, for example. The trigger wheel 17 can also be used to automatically switch the binding device 12 on and off. As a rule, however, it will be sufficient to switch the tractor on and off manually using an electrical switch. The switching cams 29 actuate a switch, which in turn starts the oil supply to the pivot cylinder 30 of the separating device 16 via a hydraulic system, not shown here.

The separating device 16 consists of a lever arm 32 which can be pivoted about the axis 31, at one end of which the pivot cylinder 30 and at the other end of which the hydraulically driven, constantly rotating cutting disc 33 are arranged (FIGS. 6 and 7). When the swivel cylinder 30 is actuated, the cutting process begins with the engagement of the rotating cutting disk 33 in the rotating and bound and therefore stabilized press strand 11. Because of the adhesion of the binder to the press strand, the binding is retained even after the severing. When the cutting disc 33 is pivoted so far that the disc circumference has approximately reached the axis of the press strand, the cutting process is ended. The cutting disc 33 is Slidably arranged on the spline shaft 35 mounted in the lever 32, driven by the hydraulic motor 34, so that it is coupled to the press strand 11 during the separation process and participates in its feed movement. After the separation process, the swivel cylinder 30 is relieved by the hydraulic system, so that the tension spring 37 swings the swivel arm 32 with the cutting disk 33 back into the starting position shown in FIG. 6. The cutting disc 33 is then returned by the force of the compression spring 36 to the starting position shown in FIG. 7 on the spline shaft 35.

Another example of the design of the separating device 16 is that the entire separating device, including its drive, is arranged separately from the winding space housing and is controlled such that it is coupled to the pressing strand 11 during the separating process and thus participates in the advance of the pressing strand 11. As shown in FIGS. 8 and 9, the separating device 16 is mounted on a carriage 38 which can be moved in two U-bars 39 of the machine frame in the direction of the extrusion feed. The carriage 38 is held in the rest position by two tension springs 40 or a hydraulic cylinder, not shown. After the separation process has been triggered, the cutting disc 33 engages in the press strand 11, so that the carriage 38 participates in the advancing movement of the press strand 11 when the tension springs 40 are gradually tensioned. After the separation process, the cutting disc 33 releases the press strand 11 so that the carriage 38 is pulled back into its rest position by the springs 40. To securely couple the separating device 16 to the press line 11 and to relieve the separating disk 33, an additional, e.g. pivoting and rotating driving wheel 41 controlled by a cam disk are provided, which at the same time engages with the cutting disk 33 in the press line and ensures the safe driving of the entire cutting device; 8 and 9, the driving wheel 41 is only indicated.

Claims (13)

1. A process for the production of highly compressed cylindrical compacts from loose stalk material, such as hay or straw, which is continuously taken up and compressed into a rotating extrusion that flows continuously in the axial direction, with individual extrudate sections (compacts) being separated from the front end of the extrusion in succession , characterized in that to produce dimensionally stable compacts with optionally different lengths, the press strand, which is still under radial pressure, is automatically wrapped during its axial advance and before the separation of a compact with a binder supplied under tension, utilizing the press strand rotation and advance. 2. The method according to claim 1, characterized in that the separation of a compact is carried out as a function of a measurement of the extruded strand feed carried out continuously. 3. The method according to claim 2, characterized in that said feed measurement is used to control the extrusion winding. 4. The method according to claim 1, 2 or 3, characterized in that the wrapping of the press strand takes place continuously helically. 5. The method according to claim 1, 2 or 3, characterized in that the wrapping of the press strand is carried out discontinuously using a binder, the width of which covers a substantial part of the length of the compact. 6. The method according to any one of the preceding claims, characterized in that the wrapping of the press strand is interrupted in the event of failure of the press strand feed. 7. Working on the winding principle collecting press for the production of highly compressed cylindrical compacts from loose stalk material, such as hay or straw, or from other materials, in particular for performing the method according to any one of the preceding claims, consisting of a by a plurality of pivotable press rolls (2), on one end face open, circumferentially to be fed winding space (3) for producing a press strand (11) flowing out on the open end face in axial and continuous feed and a separating device (16) for dividing the press strand (11) into individual compacts, characterized in that the winding space (3) has approximately the same diameter over its axial length, and that in front of the separating device (16) in the end region of the winding space (3), but at least immediately behind the winding space (3), a binding device (12) for binding the still under radial pressure Press strand (11) during its axial Feed with a binder supplied under tension as thread, tape, net or film, made of plastic or other, for example feedable material, is arranged, with a single winding unit being able to produce dimensionally stable compacts, the length of which corresponds approximately to their diameter (Stalk briquettes) or a multiple of their diameter (compact rolls). 8. Aufsammelpresse according to claim 7, characterized in that the frame-fixed binding device (12) continuously wraps the press strand (11) with the binder by the rotation and feed of the press strand (11) helically. 9. collecting press according to claim 7, characterized in that the binding device (12) wraps the press strand (11) discontinuously with a net or a film, the width of which covers a substantial part of the length of the compact (11a, 11b). 10. Aufsammelpresse according to claim 7, 8 or 9, characterized in that the binding device (12) can be switched off manually or automatically in the event of failure of the extrusion feed. 11. Collecting press according to one of claims 7 - 10, characterized in that the separating device consists of a pivotable separating element (rotating cutting disc 33, oscillating separating knife, double-knife cutting mechanism, chainsaw), which is coupled to the press strand (11) in such a way during the separating process that it participates in its feed, and its pivoting can be controlled so that compacts of different lengths (straw briquettes 11a, compact rolls 11b) can be separated. 12. Pick-up press according to one of claims 7-11, characterized in that for determining the press strand feed for triggering the separating device (16) and / or the control of the binding device (12) a trigger wheel driven by the feed of the press strand (11) (17) is arranged in the axial plane of the press strand (11), which carries on its circumference perpendicular to its plane arranged star wheels (28) which accommodate the rotation of the press strand (11). 13. Pick-up press according to one of claims 7 - 12, characterized by a device which pivots the press rollers (2) in dependence on the press pressure in the winding space (3).

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