JPH04242513A - Method to pack fiber state substance into bale - Google Patents

Abstract

PURPOSE: To enable various kinds of pre-compressions to be carried out continuously and in a regular manner to form the packaging without being dependent on a final stage press when fibrous material is to be packaged in bales by a multi-stage press. CONSTITUTION: A fibrous material is supplied into a press container 3 at a mounting stage, pre-compressed 1 in the press container 3, the press container 3 having the pre-compressed 1 fibrous material is transferred to a central press 4 together with the press container 3 containing the per-compressed 1 fibrous material in the same manner coming from another mounting device without being enforced over a non-annular transferring path communicated with the central press 4, the material is compressed in its finishing work, packed and then a vacant bale is transferred inversely to the mounting device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for compressing fibrous materials such as staple fiber flocks or endless ribbon cables, or both fibrous materials, into compacts using a multistage press.

0002

BACKGROUND OF THE INVENTION It has been known for a long time to compress and pack fibrous materials, such as staple fiber flocks, in a multistage manner in so-called rotary presses. Such presses are known, for example, from West German Published Patent Application No. 2,523.
, No. 043, Figures 1 and 2. In these presses, the fibrous material is first collected in one half of the double press box, pre-pressed and then subjected to the action of the main press ram after rotating the double press box through 180 DEG. To reinforce the formed lumps, so-called binding grooves, which are provided in the press ram, in the bottom pressure plate and also in the side walls of the press box, serve. In order to introduce the packaging material and, of course, to push out the finished mass, the side wall of the press box is designed as a door, which can be opened when carrying out this work step. As is common practice, such rotary presses are connected to each fiber production line. This is disadvantageous not only because the machine is large and bulky and therefore expensive, but also because of the high cost of personnel required to operate the machine. This is because the insertion of the packaging material and, in most cases, the reinforcing belt must be carried out manually. Furthermore,
Significant dead time occurs within the main press section of such rotary presses. This is because the working rhythm is generally predetermined by the speed of filling of the prepress.

In order to ensure better unloading of the main press system, German Patent Publication No. 2,042,004
No. 4, it is proposed to combine a main press with two pre-press systems, in which case different press boxes are transferred from each pre-press section to the main press section on a predetermined circular path. Such a double-rotary press allows good unloading of the main press parts. However, due to the given structure, the introduction of packaging materials and reinforcing belts remains difficult. Due to the close proximity of the preliminary presses, automatic feeding of packaging material is extremely difficult. Furthermore, it is difficult to use such presses for processing different, for example differently colored, fiber flocks at the same time. This is because it is not possible to completely exclude partial intermixing of the various fiber flocks within the main press section.

[0004]Insertion of flat-shaped packaging materials is extremely difficult due to the narrow space available in all known rotary presses due to the adjacent preliminary press sections, and is generally carried out by hand. This can only be done with great effort. For this reason, attempts have already been made to avoid inserting flat-shaped packaging materials before the reinforcement, and to carry out this packaging afterwards.

However, this type of packaging is generally disadvantageous. This is because this packaging comes with some drawbacks. In other words, the drawbacks are:
Rust in the packed material due to the negligible strength of the normal plastic sheet to prevent further tearing, which is not secured by reinforcement in that position, and corrosion of reinforcing belts or wires in direct contact. There is a risk of staining, as well as the possibility of cutting of partial cables when packaging the cable tape as a fibrous material to be packed. However, these difficulties can be overcome by using special reinforcing and packaging materials, such as crimped sheet material.

In addition to packaging fiber flocks in bulk, it is also known to place endless fiber cables in transportable cartons. This higher filling weight in the carton is explained in West German Patent Publication No. 1,239.
, 656, according to which a cable placed continuously by a swingably supported rope piler is continuously placed by two press rams placed beside the rope piler. compressed. Due to this compression of the fiber cable placed in the carton, a higher specific weight is achieved, which would still be insufficient even for a placed endless cable without post-pressing. DE 2,736,316 proposes a press for packing chemical fiber cables in particular in the form of a bundle. This press consists of a unit located separately from a mounting device with a preliminary press. In this method, a box bag is used as packaging material, which must be inserted into an empty support container. The manufacture of such packing means fittings is expensive and the use of such fittings when packaging fiber flocks is therefore sometimes undesirable.

[0007] However, a large number, in particular three or more, of placing devices and pre-pressing devices cooperate with the main press or the central press, and the central press can also, in particular, additionally, use the central press to collect the packaging material. The problem arises of configuring the device in such a way that an unobstructed and optionally automatic covering and subsequent optionally automatic reinforcing is possible. Such equipment and the necessary method for operating it are suitable in the same manner for packaging fiber flocks and endless cable tapes.

[0008]

SUMMARY OF THE INVENTION The present invention avoids the drawbacks of the above-mentioned known techniques by separating the loading device and the pre-press device from the central press, and which enables the various pre-compressions to be carried out during the packaging of fibrous materials. is carried out independently of the final press, i.e. the fibrous material is first fed in each case to a loading device, where it is precompressed in a pressing container, preferably continuously during the loading stroke, and the precompression The fibrous materials, i.e. fiber flocks and fiber cables, are transferred in the form of packs to a central press, which is also supplied with material from other loading stations, where they are finished pressed and packaged to a high specific weight. An object of the present invention is to provide a packaging method that enables packaging in the form of a lump, and this method.

[0009]

[Means for Solving the Problems] According to the present invention, the above-mentioned problem is achieved by supplying a fibrous material to a press container of a mounting device in a mounting step, and subsequently pre-compressing the fibrous material in the press container, Guide the press container containing the pre-compressed fibrous material together with another press container containing the pre-compressed fibrous material without forcing it into the central press on any non-annular path connecting the pre-press and the central press. supply,
In this central press, each fibrous material is compressed one after another in a container containing the fibrous material, finished and packed, each finally pressed mass is carried out, and the empty mass is transported back to the loading device. solved by.

[0010] With the above configuration, the central press can be used in a large number of textile processing lines. Transfer of the pre-pressed fibrous material takes place within the press container. The press containers are transferred from the mounting device and the pre-press device to the central press by means of suitable devices.

In a preferred embodiment of the method according to the invention, for example, the pre-pressing of the fibrous material is carried out in a number of mutually independent pre-presses, each belonging to a corresponding fiber processing line. The loading and pre-pressing takes place in a transportable press container with a removable bottom plate. The fibrous material to be pressed is accumulated in a prepress in such a press container in the usual manner, prepressed, and then the filled container is centered on a predetermined trajectory without forced guidance. After the press container is transferred to the central press, possibly without a bottom plate, the open end of the press container is covered and then the press container is transferred to the central press in the transportable press container. It is compressed to a fraction of its capacity by the action of the press ram. Subsequently, the surrounding press vessel is completely freed of the material under press pressure. After covering the freely accessible side of the mass with a strip of packaging material, the protruding side of the packaging material is bent and pressed against the surrounding surface, for example by the action of a flat or rod-shaped press pad, and the mass is pressed against the surrounding surface. Hold it on the surface. By fixing the protruding surfaces of the packaging material, subsequent reinforcement with tape or wire is possible without any hindrance. After returning the press pad and main press ram, the finished baled mass is removed from the central press, while the empty press box is reassembled with the associated bottom plate and sent back to one of the preliminary presses.

[0012] In contrast to the known technology, the transportable press container does not have any rigid connection to the central press, which forces the movement of the press container only in, for example, an annular track. The press container according to the invention preferably has the form of an open box with a square cross section, the lower opening of which is closed with a releasable bottom plate. A retaining device provided in the open cylindrical part of the press container and in the bottom plate ensures that the material to be pressed can be forced out of the lower opening of the box-shaped part of the press container during the transfer and during pre-pressing. Work like you don't have to. In the case of pre-pressing fiber flocks, a known dam is provided in the vicinity of the upper opening of the box-shaped part, which prevents the pre-pressed material from flowing between the individual pre-presses and into the central press. Prevents bulging during transport. Suitable damming devices and their operation are described, for example, in German Patent Application No. 1,938,602. However, other similarly acting systems can also be used.

Since the transportable press container according to the present invention must be able to withstand not only the press pressure of the preliminary press but also the pressure of the central press, the press container is provided with reinforcing ribs etc. on its outer surface. The inner surfaces of the jacket-like part and the base plate are designed particularly smoothly and without grooves or grooves. Since there are no joint grooves and the container is shaped like a box without a door, the weight of the press container is low, including the removable bottom plate that is connected via the dam and holding device. The conveyance of such a container, even when the container is full, can be carried out easily by ordinary means of conveyance, such as roller tracks or rail tracks, etc.
This can be done using a floor conveyor, suspended track, etc.

[0014] In FIGS. 2 and 3, wheels fixed to the bottom plate of the press box are shown as a conveying device for the press container. For example, the press container can be guided by a rail system with its wheels, in which case the rails in the rail system may be equipped with switches, turntables, stop lines, etc. leading to intermediate storage areas of the press container. . However, the conveying device may also consist of roller tracks, as shown for example in FIGS. 10 and 11. In this case, the bottom plate of the press container must have a smooth lower surface without protrusions. Such roller tracks are suitable for horizontal conveyance of heavy bulky materials. The roller track may include driven rollers that facilitate further transport of the container.

[0015] Floor-lifting and transporting equipment, such as forklift trucks or lift tractors, are also suitable for transporting press containers from the mounting device and the pre-pressing device to the central press and vice versa. Such a conveying system is particularly advantageous because of its three-dimensional movability. This is because this transport system is not bound to a fixed track or track and branch system. When using such lifting and conveying means, there is the advantage that the bottom plate of the press container can be formed in accordance with the style of the conveying pallet.

[0016] It is not absolutely necessary that the conveying device acts on the bottom plate of the press vessel. A suitable conveying device can also be constructed, for example, by a suspended track with corresponding tracks and switches. In this case, the press container must be provided with suitable devices, such as hooks, on the outside of its box-shaped part, in order to connect these to the suspension track. It is advantageous to use a suspended track system as a conveying device. This is because such a conveyance device can be combined with a take-up/feed device to be described later.

The various conveying devices described above can be selected from a large number of known conveying devices. In individual cases, the local circumstances, ie, for example, the arrangement of the various mounting devices and prepress devices and central presses, dictate what conveying devices can be used with particular advantage. In this case, of course, combinations of various conveying devices are also possible. For example, it is possible to carry out conveyance on a roller track and transfer it from this roller track to a suspended track, or to take it over by a floor conveyor.

The central press required to carry out the process according to the invention - in accordance with the press equipment known up to now - must be equipped with a particularly strongly constructed press ram, which is preferably hydraulically actuated. Must be. When configured as a top-hung press, the necessary counterpressure plate is firmly moored to the foundation as a bottom plate. Unlike conventional stiff presses, the central press according to the invention does not have a press box forcibly connected thereto. However, as will be shown further below in connection with the details of the individual special embodiments, the method according to the invention can also be carried out using end presses with tightly connected press boxes.

However, it is advantageous if the press container is not rigidly connected to the central press. Instead, a device must be provided for taking the press containers conveyed into the central press into the central press and for fixing the press containers in the pressing position. Such a take-off device may consist, for example, of a gripping system. This gripping system grips the press container being conveyed to the central press and holds the box-like part of the press container without a bottom plate in such a way that the pre-pressed material cannot be extruded from the lower opening of the box-like part. It is possible to transport it above. FIGS. 3 and 4 schematically represent such a take-off system guided in an upper trackway. This gripping system not only allows the compressed material to be conveyed horizontally on the top surface of the press container without a bottom plate to avoid extrusion, but also allows the box-like part of the press container to be centrally pressed during the pressing process. Can be held in precise position.

After the main press stroke has been carried out in the central press by lowering the press ram, a conveying device must be activated which is capable of completely removing the compacted material from the box-shaped part of the press container. It won't happen. These conveying devices are installed as separate devices in the press and remove the box-like parts of the press container upwardly or downwardly, for example via a gripping system. In FIGS. 4 and 5, these conveying devices are part of a take-off device. That is, the gripping device guided in the upper track also has a pneumatic device for lifting the box-like part of the press container high above the pressed material.

As central presses, overhead presses are used, in which the press equipment rests on a yoke carried by columns. In this case, the distance of this column in the pressing position from the press container and the manufactured mass is selected in such a way that all sides of the mass can be accessed without obstruction after removing the press container. Only in this way is it possible to pack and strengthen compacted lumps in a simple way and possibly automatically.

[0022] The method according to the invention in this embodiment allows a particularly simple packaging of bulk material in flat, flexible packaging material shreds. In this case, feeding and coating take place completely automatically. For example, as can be seen from the drawings, only the press ram and the bottom pressure plate of the central press have the binding grooves necessary for the subsequent tape winding. Before the pressing process, the press ram and the bottom pressure plate must be covered with shreds of the desired packaging material. This coating, for example with a plastic sheet, is sufficient to prevent the pressing material from entering the binding groove. The packaging material shreds then cover at least the end faces of the compacted mass. The attachment of the packaging material shreds is carried out, for example, as follows. That is, before the press containers are introduced into the central press by means of a withdrawal device, the bottom pressure plate and the ram of the central press are each covered with one such cut piece. In this case, the position of the packaging material shreds is clamped,
It is fixed by the action of a fixture or a suction nozzle.

However, the packaging material shreds are placed on the bottom plate of the still empty press container in order to cover the lower end surface, and the protruding ends of the shreds are fixed to the upper part of the press container with a clamp, for example. It is also possible to do so. In this case, covering the bottom pressure plate of the central press with such shreds would be considered redundant. It is then also possible to cover the upper end face of the press vessel and the press face of the press ram with further shreds before the main press stroke. It is generally advantageous to select the area of the packaging material shreds for the end faces to be larger than the open cross section of the rear end faces of the press container and the produced bulk. Basically, there are two possibilities for packaging such debris using shredded packaging material. One is to make the packaging material shreds for the end faces so large that the excess packaging material shreds that protrude after pressing are sufficient to overlap even after folding and completely cover the entire end face. It is a matter of choosing. However, such methods generally lead to difficulties in pressing operations. This is because a relatively large area of packaging material shreds wraps around the descending press ram, making it difficult to bend the protruding packaging material shreds over the sides even after the press box has been removed. Furthermore, there is a risk that the protruding surfaces of the packaging material shreds will be damaged during the pressing process. For this reason, it is advantageous to use packaging material strips that protrude only slightly from the end faces of the pressed mass. It is particularly advantageous if the projecting length is approximately 10 cm at each stiff edge. In this embodiment of the method according to the invention, the sides of the mass are covered with further strips of packaging material. In this case, care must be taken to ensure that the strip covering this side surface remains in place until the end of the taping of the stiffness. This can be done in a simple way, for example by welding, gluing, sewing, etc. the overlapping ends of the strip under some pretension. It is also possible to fix the ends of the strips in position, for example by means of hydraulically driven rod-shaped or planar press pads, until the reinforcement is completed.

[0024] In practice, the reinforcement by the binding grooves in the press ram and the bottom pressure plate makes it possible to reliably exclude that the lateral openings of these binding grooves are sealed with protruding pieces of packaging material. It can be carried out without any problems only if . For this reason, it is necessary to fold back the protruding edge surfaces of the packaging material strips and hold them on the upper surface of the bulkhead until there is no longer any risk of displacement of the lateral openings of the binding grooves. Folding and retaining of the projecting edge surface is advantageous, for example, by using rod-shaped or flat press pads which are equipped with a pneumatic drive and which are inserted, for example, on the upper surface of the press ram and the bottom pressure plate. can be done. In other embodiments, the press pad can be assembled into a frame that is placed in the vicinity of the finished coated mass. The folding of the protruding edge surface takes place on the one hand in the direction of the side surface of the stiffness or in the direction of the end face of the stiffness. If the folding is preferentially carried out in the direction of the end face of the stiffness, both the press ram and the bottom pressure plate must have an annular outer part which can be moved independently of the position of the main part. Both embodiments are shown in Figure 2~
It is shown in FIG. The detailed operating mode will be explained in more detail later in connection with the individual drawings.

Reinforcement of the lumps already covered with packaging material can be carried out in the usual manner with tensioned wires, steel belts or similar articles. It is also easily possible to perform this reinforcement with an automatic device. In this case, the automatic tape winding device is, for example, fixed together with the machine frame which already carries the press pad.

After replacing the press pad and main press ram, the debris is free on the bottom plate and can be removed from the press. Before pressing the contents of the next press container, the empty box-like press container is removed from the press by means of a conveyor and a take-off device. In this case, it is advantageous to immediately place the press container back on the associated base plate. The empty box-like part lowered by the transport device can also be picked up, for example, by another gripping device, which places it in another position on this box-like part, while the transaction device has already picked up the next part. When it is full, the press container is transferred to the central press. In this case, of course, the associated bottom plate must be transported separately to the position where the second gripping device reintegrates the box-like part of the press container and the bottom plate.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The accompanying drawings show examples of the method according to the invention, and the invention will be explained in detail below with reference to these drawings, but the invention is not limited to these examples.

FIG. 1 shows one possible three-dimensional arrangement of the individual parts of a press installation for carrying out the method according to the invention. In this case, three preliminary presses 1 are connected to a central press 4 via conveying devices, such as roller tracks 2, 8, for example. The fibrous material to be compressed is collected in a prepress 1 and precompressed. The filled press containers 3 are conveyed via roller tracks 2 to a central press 4 . A main pressing process is performed in this central press 4. In this case, the compacted material is furthermore automatically fitted with packing material on its sides by means of a covering device 5 and reinforced with, for example, steel belts, before being transported off as a finished mass 7.

The empty press container 6 is conveyed again to the preliminary press 1 on the second roller track 8. Roller track 2, 8
are shown with an end that is released in each case in the vicinity of the pre-press 1, so that, for example, other pre-press 1
can be accommodated within this system or other empty press containers 6 at this open end.
Alternatively, it indicates that the filled press container 3 can be placed in storage. However, via these roller tracks 2, 8, for example the German Patent Publication No. 1,239,659
A mounting device according to No. 1 may be combined, insofar as this mounting device can be used to enable mounting and pre-pressing in the empty press container 6.

FIG. 2 illustrates a preliminary press section according to the present invention. The material to be compacted falls via a filling chute 12 through the upper casing 11 of the prepress into a transportable press container. This press container has a box-shaped part 13.
, consisting of an automatically operating damming flap 14 and a releasable bottom plate 15. The fibrous material is compressed by a press ram 10, which is moved via a piston rod 9, and a pre-pressed material 20 is obtained. The box-shaped part 13, which preferably has a rectangular or square cross section, is releasably connected to the base plate 15 via a retaining device 18. This holding device consists, for example, of a groove guide and a spring guide and is designed in its simplest form as a slide box. In this embodiment, the box-shaped portion 13 is connected to the bottom plate 1.
A cut piece of packaging material 19, which will later become the lower end surface of the stiffness, is inserted before being joined to 5. The wheels 7 are responsible for transportation costs here. This wheel is the bottom plate lower structure part 1
It is connected to the bottom plate 15 via 6.

In the pre-press, the loose fibrous material is first accumulated in the inner chamber of the box-shaped part 13 and the inner chamber of the upper casing 11, and then the pre-press ram 10 is lowered to remove the loose fibrous material from the box of the press container. This is done by compressing within the shaped portion 13. After the prepress ram 10 has been pulled upwards again, a further filling process is carried out, and the fibrous material is precompressed in the inner chamber of the box-shaped part 13 by repeated filling and lowering of the prepress ram 10. In this case, the known damming flap 14 serves to prevent the pre-pressed material from bulging out of the cylindrical part 13. In this case, the position of the dam flap 14 is controlled depending on the position of the press ram 10, for example. After the box-shaped part 13 has been filled with the pre-compacted fibrous material, the press container is removed, for example by wheels 17, together with the box-shaped part 13 and the base plate 15, from the area of the pre-press. An empty container is then moved into that position. The bottom plate 15 of this container is likewise covered again with the packing material shreds 19. In this case, the exact position of the press container relative to the press ram 10 is ensured by a suitable locking device, not shown. Pre-pressed fiber material 20
The press containers filled with are now conveyed on a flat surface to a central press. This transport can be reduced, for example, by means of a drive or a tensioning device (not shown).

FIG. 3 shows the press ram 27 and the bottom plate 29.
In addition to the essential parts of the central press such as, a filled press container 3 with a base plate 15 and an associated take-off and transport device 21 are shown. By means of a pick-up and transport device consisting of a gripping device 22, an upper roller wheel 24 and a rail system 25, the box-shaped part 13 of the press container is moved horizontally into the working area of the press ram 27 of the central press. In this case, the holding device 18 during this horizontal movement
is dissociated from the box-shaped portion 13. A holding device (not shown) serves to prevent the packaging material strips 19 from changing their position during this movement. In this case, the connection between the gripping device 22 and the box-shaped part of the press container can be formed, for example, by a suitable holding device 22.
3. In this embodiment, the central press ram 27 includes a main press ram 27a and an outer press ram (27) surrounding the main press ram 27a in an annular manner.
b) It is divided into. The position of the press ram 27 is determined via the piston rod 26 by a drive (not shown). The bottom pressure plate 29, like the associated press ram, is divided into a main pressure plate 29a and an outer pressure plate 29b, which surrounds this main pressure plate in an annular manner. Press ram 27 and bottom press plate 2 of box-shaped part 13 of press container
The exact position relative to 9 can be achieved by locking means, not shown, which act, for example, on the pick-up and transport device 21. Furthermore, the drawings show that both in the press ram 27 and in the bottom pressure plate 29 there are binding grooves 28 in order to enable reinforcement in the compressed state after the stiffening.

FIG. 4 shows a press ram 27 of fibrous material.
The original press by a, 27b is illustrated. In this case, the box-shaped part 13 of the press container is held by a gripping device 22 of a take-up and transport device 21 . To carry out the method, it is important that the upper end of the press box and the press surfaces of the press rams 27a, 27b are covered with the packing material shreds 30 for the upper end faces of the lumps 31 before the lowering movement of the press rams 27a, 27b. That's true. The use of packaging material shreds 19 and 30 for the end faces of the resulting bulk is necessary for a number of reasons. These cut pieces do not shift the position of the binding grooves 28 of the press ram 27 and the bottom pressure plate 29 relative to the material to be pressed, and this does not hinder subsequent reinforcement, and the compressed material work to avoid contamination. With the method according to the invention, it is therefore not necessary to accumulate and prepress the same fiber material in all prepresses 1.

Rather, the method according to the invention makes it possible to pack different fibrous materials, ie differently colored fiber flocks. If the packaging material shreds 19, 30 are not used, the textile material can be stitched from the previous pressing process. If packaging material shreds 19, 30 are not used, there is a risk that fibrous material will remain in the binding groove 28 from the previous pressing process and that other types of fibrous material will remain in this binding groove during the subsequent pressing process. . In addition, of course, the packaging material is also stiff (
31) has the task of protecting the compressed material from dirt during subsequent transport and storage. The following method steps are illustrated in FIG. While the press rams 27a, 27b remain unchanged in their positions, the material 3 compressed into lumps is removed from the box-shaped part 13 of the press container by the gripping device 22 of the take-up and conveyance device 21.
1 is completely removed. The drive means required for the lifting movement of the gripping device 22 are not shown here.

FIG. 6a shows the automatic covering of the now free sides of the lump 31 with packing material using the automatically working covering device 5. In order to make the construction and operation of this coating device 5 clearer, FIG. 6a shows the central press system in cross section, similar to the previous figures. On the other hand, FIGS. 6b and 6c show the chronological course of the coating process in plan view. Also shown in FIG. 6a is a compacted mass 31 with packaging material shreds 19 and 30 attached to its sides. Here, the side of the lump is additionally added to the packaging material shredded piece 41.
covered with a third cut piece consisting of. This third packaging material shred 41 is unwound from a storage roller 32 held by an arm 33.

The actual packaging process can be seen from FIG. 6b and from FIG. 6c over time. In FIG. 6b, the end of the packaging material strip 35 is held by a swing arm 37 fixed to a carrier arm 36, and the storage roller 32 is swung outwards by a swing arm 33 and a pneumatic adjustment member 39. 6c, while the entire device is moved onto the compressed mass 31 by the conveying drive 40, in this case reaching the end position shown in FIG. 6c. Due to the movement of the entire covering device 5 and the additional pivoting movement of the carrier arm 33 about the pivot point 34 as well as the pivoting motion of the pivoting device 37, all sides of the mass 31 are coated with the sheet 35. While the sheet 35 is held in this position, a cutting and welding device 38 performs the joining of the overlapping packaging material strips. Pre-tensioning where coating is done and cutting--cut pieces and code 4
1 - Due to the subsequent welding of the sheet strip, the position of this strip is fixed at the same time. Subsequently, the return movement of the storage roller 32 is carried out by the movement of the carrier arm 33 and the reversal of the transport drive 40. As soon as the automatically operative covering device 5 has again reached the position according to FIG. 6b, the free end of the packaging material strip 35 is transferred to the swinging device 37.

[0037] Reinforcement of the lumps, which are completely covered with the packaging material strip, is not yet possible here. Because the binding groove 28
This is because the lateral openings of the packaging material are still at least partially covered by the protruding packaging material surface. An embodiment for folding the protruding packaging material strip and for fixing it to the stiff surface is shown in FIG. In this embodiment, the folding is performed according to West German Published Patent Application No. 2,736,316.
Annular outer ram 2 of the press ram in accordance with the proposal by No.
This is done by lifting 7b. In this case main ram 2
7a remains in the press position. At the same time, the annular outer bottom pressure plate 29b of the bottom pressure plate 29 is lowered. The protruding packaging material surface is folded back into the hollow space onto the lateral end face of the bulkhead by means of a correspondingly designed press pad. In FIG. 7, this press pad is mounted on a special carrier framework 4.
It is held at 3.44. These carrier frameworks are moved into the vicinity of the pressed mass 31 after the box-shaped part 13 of the press container has been removed. In FIG. 7, the press pad 42a fixed to the carrier framework 44 is shown in a swung-out condition. Press pad 42 on one hand supporting framework 43
b is already in the pivoted and engaged working position. The oscillating movement of these press pads about their point of rotation is effected by a suitable drive, which is not shown in the drawings.

The annular outer ram 27b and the annular outer bottom pressure plate 29b are moved by suitable movement devices, for example hydraulically controlled pistons. These movement devices have suitable notches so as not to damage the swung press pad 42b when the members 27b and 29b return to the starting press position again. After the outer ram 27b has lowered again and the outer bottom pressure plate 29b has correspondingly been lifted, the press pad 42
b will be able to enter again. This is because the pressing parts 27b and 29b now fix the protruding ends of the packaging material surface in their bent position to the sides of the bulk.

[0039] The side opening of the binding groove 28 is now accessible, and this binding groove 28 is useful for reinforcing the lump that has been pressed. FIG. 8 shows automatic tape wrapping of the lump by means of a tape wrapping device 45 which is also fixed on the carrier frame 44. For automatic tape winding, the bottom pressure plate 2 is
It is necessary to provide a member for turning to the lower binding groove in 9. These deflection elements are arranged in a carrier framework 43. Return the support frameworks 43 and 44 and press rams 27a, 2
After lifting 7b, the pressed mass remains on the bottom parts 29a, 29b in the packed state. The lumps are removed from the press or taken up via an extrusion device (not shown) to other known conveying means for such products.

To complete the method, the box-shaped part 13 of the press container is lowered again by the take-off and transport device 21 and is integrated again with the associated bottom plate 15, in which case the bottom plate 15 is unpacked before being integrated. It must be covered with a material cut piece 19. The empty press containers are transported back to the prepress by means of the conveying device described here, where they are prepared for a new filling.

A modification of the method and the necessary central press modification is shown in FIG. In contrast to the embodiment according to FIGS. 2 to 8, here neither the press ram 27 nor the bottom pressure plate 29 is divided into a central part and an outer part. Packing material shreds 19,
The side of the packaging material projecting from the end face of the bulkhead 30 is not pressed against the end face here by the press pads 47a, b and 49a, b, but is bent onto the end face. In this case, the lever-shaped press pads 49a, b, which are inserted into the recesses 46 of the press ram 27, are oscillated by means of a conventional drive device (not shown). This press pad 49a is shown in the swing-in position in the drawing, but one press pad 49b is in the working position. Press pads 47a and 47b are inserted into the bottom press plate 29. These press pads 47a, b can be moved by a pneumatic drive 48. Unlike the press pads described so far, the press pads 47a,b only have an up-and-down movement. Press pad 47a is shown in the retracted position and press pad 47b is shown in the retracted position.

Packing and reinforcing the lump 31 using the device according to FIG. 9 is advantageously carried out as follows.

The press ram 27 descends and the press pad 4
After 7b, 49b has been moved into the working position, the side surfaces are covered with strips of packaging material 35. In this case, the width of the packaging material strip is selected such that it does not exceed the height of the sides of the bulk material in the pressed state.

Attaching the packaging material strip to the side is already shown in Figure 1.
b and in the same manner as described in FIG. 6c and the detailed description therefor. In the method of this embodiment, the side surfaces are covered with the packing material by press pads 47b,
This is done when 49b has already started running. After the packaging material strips for the sides have been fixed by welding, gluing, etc., the stiffness is first reinforced. After that, the lower press pad 47b
The press ram 2 is entered into position 47a, while the press ram 2
7 in position 49a with the press pad still in running condition.
be lifted up. In this manner the press pad is removed from its position between the individual packaging material shreds and the mass is free and ready for transport.

Another press system according to the invention is shown in FIGS. 10 and 11. In these embodiments, two pre-presses 1 and 1' as well as a cable-laying and pre-press device 50 are connected to the travel lines 51, 52, 5.
3 and 54 to a central press 55. On the preliminary presses 1 and 1' there is a known cable cutting machine 5.
9, 59' are provided. With these cable cutting machines, endless cables 56, 57 coming from various fiber lines are cut into staple fibers. These staple fibers subsequently fall directly into a press container 60 lined with packaging material. The staple fiber flock is pre-compressed directly in the press vessel. After a predetermined weight or degree of filling is achieved, the filled press container 60 is transferred to, for example, a moving line 51,
52 and then moved in the direction of the central press 55. In the embodiment according to FIG. 10, another endless cable 58 coming from another textile processing line is connected to the cable resting and pre-pressing device 50.
It is placed in another press container 60 and pre-compressed. When this press container is full, it is also moved in the direction of the central press via transfer lines 51, 54.

In this embodiment, it is advantageous for the press container 60 to be constructed from a rectangular bag-like packaging material before it is filled with fibrous material. The conveyance of the press containers on the movement lines 51 to 54 takes place, for example, by means of roller tracks, as also shown in FIG. 11 here. However, instead of this roller track any device for horizontally conveying materials can be used.

In the embodiment according to FIGS. 10 and 11,
The press container 60 may have a soft structure. This is because the press container only needs to withstand the pressure of the pre-press. A pre-compressed material 70 is taken out from this press container 60 by a take-off device 61 . For this purpose, for example, a take-off device 61 movable on a rail track, schematically shown in FIG. 11, is provided with a suitable gripping and take-off device. Pre-compressed material 7 in press container 60
0 is moved into the central press by a take-off device 61. This central press may be, for example, a normal top-hung press;
In this case, the press room is closed with a door.

With this embodiment, it is possible to take up the material pre-pressed by the take-off device 61 into the central press 55, and after the final pressing has taken place in this central press, the belt winding can be carried out automatically, for example. This can be done with a winding device 45 that works in this manner. Conveyance of the finished mass 7 takes place, for example, via a movable bottom 64 and then further via a transfer line 65, which is also designed as a roller track, for example. The empty press containers 60 are returned from the take-off device 61 to the individual preliminary presses via a transfer line. On the way to the loading and auxiliary press 1, 1' or 50, the empty press container 60 is, for example, also loaded with packing material shreds or accessories.

[0049] Taking-off device 61 for pre-pressed material 70
In this embodiment of the invention, the precompacted material 70 is placed on a movable press bottom 64, which itself is responsible for the subsequent transfer into the central press. It can also be carried out to carry out transportation. 12 and 13 show another embodiment of the present invention. In this embodiment, two loading and pre-pressing devices are provided for the fiber flock 50 and the cable tape. Endless cables 57 and 58 come from the textile processing line to which they belong. While the cable 58 is laid down directly as a cable tape and pre-pressed, the endless cable 57 is first cut in the cutting machine 59 and then falls into the pre-press 1.

The loading and pre-pressing devices 1 and 50 are again connected to a central press 71 via transfer lines 51-53 and 66-68. Transportable press container 72
is filled with fibrous material in the loading and pre-pressing device, as already mentioned, and this material is then pressed in the central press 71 in this press container. As already described in the embodiments above, here too a press container of flexible design may be used, which press container is provided with a press container in which the additional forces generated in the central press are, for example, resting on the sides of the press container. If it is configured so that it can be absorbed by the side walls, it only needs to withstand the pressure in the pre-press.

[0051]

Effects of the Invention With the configuration of the present invention as described above, various preliminary presses are performed independently of the final press in the packaging process of fibrous materials, and the preliminary presses are no longer forced to be combined with compression. The press container is not part of the working and packaging system, but is operated completely independently of each other, so that the press container can be moved freely and can be moved, for example, on a track system with rails or It is possible to transport the presses on roller tracks or by means of floor conveyors or the like to remote and completely independent central press positions, and furthermore the point of the final press in the central press is not determined by a pre-press, thus making it possible to prepare a large number of empty press containers. becomes possible.

[0052] Furthermore, the new configuration of the press system described above eliminates the need to prematurely prepare the required press containers, thereby providing leeway in the work flow with respect to pressing and packaging operations.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the three-dimensional arrangement of the press system.

FIG. 2 is a diagram of a transportable press container.

FIG. 3 is a diagram showing a collection device.

FIG. 4 is a diagram showing the state of final pressing.

FIG. 5 is a diagram showing the state of final pressing.

FIG. 6 a) shows a device for automatically covering the sides of lumps; b) A diagram showing an automatic coating device for the sides of lumps. c) A diagram showing an automatic coating device for the sides of lumps.

FIG. 7 is a diagram illustrating the bending of a protruding cut surface of the packaging material.

FIG. 8 shows an embodiment of reinforcement.

FIG. 9 shows another embodiment of the central press and the necessary press pads.

FIG. 10 is a plan view of another embodiment of the press system according to the invention;

11 shows a side view of the press system according to FIG. 10 in the central press area; FIG.

12 is a side view of a side view of a simpler installation compared to the embodiments corresponding to FIGS. 10 and 11; FIG.

13 is a plan view of the installation according to FIG. 12; FIG.

[Explanation of symbols]

1 Preliminary press 2 Roller rail 3 Press container 4 Central press 5 Coating equipment

Claims (10)

[Claims] Claim 1: In a method for compressing and packing fibrous materials such as staple fiber flocks and endless belt cables, or both fibrous materials into lumps using a multi-step press, Feeding a fibrous material into a press container, subsequently pre-compressing the fibrous material within the press container, and having the pre-compressed fibrous material on any non-annular path connecting the pre-press and the central press. The press container is guided without forcing together with another press container with pre-compacted fibrous material into a central press which compresses the fibrous material one after another in each container with the fibrous material. The above-mentioned method is characterized by carrying out finishing, packing, and finally carrying out the pressed lumps, and transporting the empty lumps back to the mounting device. 2. Filling the staple fiber flock into a case or bag which is inserted into a press container and which serves for packaging, the staple fiber flock being pre-compressed in the packaging case and containing the pre-compressed material. The press containers are moved to the central press, the press containers are separated from the filled packaging cases, the filled packaging cases are moved into the central press for final compression, and then sealed on all sides in the pressed state, 2. The method of claim 1, further comprising: and reinforcing. 3. After the staple fiber flock has been placed in a case serving for packaging and pre-pressed, the upper part of the press container used, which is divided into two parts, is pulled out and the lower part of this press container is then pulled out. 3. A method according to claim 1, characterized in that only the pre-compressed material is fed to the central press. 4. The loaded staple fibers are pre-compacted in a press vessel, the press vessel is fed with the pre-pressed material to a central press where final compaction is carried out, and the resulting mass is compressed into the final compacted material. A method according to any one of claims 1 to 3, characterized in that the lumps are reinforced in the press container, the lumps are pulled out from the press container, and only then the lumps are sealed on all sides with a packing case. 5. Pre-compacting the fibrous material by placing it in a press container fitted only at the bottom with a particularly protruding packaging material strip, and transporting the press container after the pre-press to a central press. at the latest, the upper end is covered with another strip of packaging material, the fibrous material is finished compacted in the press container, the press container without bottom plate is pulled out of the fibrous material under the pressing pressure, and the stiffness is removed. 5. According to claims 1 to 4, the press container is covered with projecting lower and upper wrapping material strips to reinforce the stiffness, removed and the press container together with the bottom plate is transported back to the mounting device. One way or the other. 6. Pre-pressing the fibrous material in a pre-press by placing it in a transportable press container with a releasable bottom plate and in particular covered with packaging material shreds;
The filled press containers are transported to the central press along a predetermined trajectory without forcible guidance, taken off, and after covering one or more open end faces with packaging material shreds, the press containers are The contents are compressed to a fraction of their volume by the action of the press ram of the central press, the press container is completely cleared of the material under press pressure, and the sides of the mass now freely accessible are subsequently Furthermore, it was covered with a strip of packaging material, in which case the protruding side of the packaging material was bent under the action of a press pad and held on top of the lump, the lump was subsequently reinforced with tape, etc., and the press ram was returned. 6. A method as claimed in claim 1, characterized in that the empty press container is moved away from the rear central press and sent back to the side of the preliminary press. [Claim 7] The end face of the filled press container is covered with a protruding shredded piece of packaging material, and the face that protrudes beyond the end face of the packaging material shredded piece is covered during the main pressing process and after the press container is removed. The action of the press pad on the sides of the lump causes it to bend and the sides of the lump are further covered with a strip of packing material whose width is approximately equal to the side height of the compressed lump, and this strip is used until the next reinforcement is completed. 7. The method of claim 6, further comprising holding in this position. 8. After the main pressing process is completed, while removing the press container, cover the sides of the mass under pressing pressure in the central press with a strip of packaging material whose width is greater than the height of the finished mass. and, holding it in this position, continue to pull the annular outer part of the press ram and bottom pressure plate back away from the lump under the press pressure, and press the press pad against the lump in the free space created by the protruding surface of the packaging material. 8. The method of claim 7, further comprising folding back over the ends and holding in said folded position until stiffening of the stiffness occurs after returning the annular outer portion of the press ram and bottom pressure plate. [Claim 9] The holding of the band-like article covering the side surface of the heap made of packing material is carried out by welding, gluing, pasting, sewing or tightening both ends of the band-like article at a predetermined location. A method according to any one of claims 6 to 8. 10. The transportable press container is taken into the central press by gripping the transportable press container by a take-up device, and the press container is held by the bottom plate and the jacket portion of the press container. Claim characterized in that, after release from the device, the compressed material and/or the lower packing material shreds are moved into the correct working position of the central press without changing their predetermined position. Any one method from 6 to 9.