FI69994B - RELEASE LEVEL BACK TO ELLER FLERA TRAODAR ELLER BAND FRAON EXEMPELVIS FOERPACKNINGAR - Google Patents

Description

1 69994

The present invention relates to a device according to the type definition of claim 1 for removing yarns or ties from, for example, packages, such as paper pulp bales, an apparatus for removing one or more yarns or bandages from packages, for example an apparatus for removing yarns or bandages from packages, such as paper pulp bales.

Packages, such as bales, packages or boxes containing pulp or other fibers, are often provided with ties or yarns around them for holding together. When unpacking the material in the package, you must first remove the threads or ties. In this case, the existing wires or ties are cut in one place and then pulled out of the package to finally be removed for disposal or reuse. Because long ties or wires can be made of metal or plastic, they are often difficult to handle, often requiring them to be cut into short pieces or twisted together. Especially in the case of metal rims or wires that will be reused after smelting, chopping into small pieces that take up little space and allow mixing with other scrap is used. Such removal of the yarns or ties around the package and their post-removal possession, as has been shown above, requires a number of centralized measures, namely retrieving and cutting the individual yarns, removing the package 2 6994 and holding it, preferably in short pieces, removing it and storing it. In the context of national measures, the packaging itself must also be handled, namely removed from storage or means of transport and then transported away from ties or yarns in an exempt state or possibly dismantled to distribute the contents.

Due to the fact that the operation is so complex and consists of many measures or factors, such removal of yarns or ties is mostly done by hand. This involves high costs and work is generally not considered to be very desirable, which can make it difficult to get labor into it. At the same time, there is a relatively high risk of accidents after cutting due to untreated yarns. Thus, there is a considerable shortage of automatic equipment for removing ties and threads, but previous attempts to achieve them have so far not resulted in equipment that could perform this work in a reliable manner at a reasonable cost.

However, one device for mechanically unpacking ties is known from DOS publication 20 02 089.

The chisel used mechanically in this device breaks the bandage, after which the pliers grip it opposite the cutting point and pull it out of the package. The bandage then protrudes from the clamping device and, when removed, easily has a whipping effect, which can cause damage, while a considerably long movement is required to completely release the bandage from the package. After removal, the long bandage is difficult to handle.

German Offenlegungsschrift 28 55 138 discloses a device comprising a cutting device, a gripping device and a feeding device for feeding the entire length of a strip when the gripping device has gripped it. The cutting device is located relatively far from the gripping device and completely to the side of its path. The gripping device takes the tape between the rollers of the feeder but the reversing movement takes place along a separate extended trajectory. The tape fed between the rollers is guided to the cutting device by means of a control member provided with a special force cylinder. This control is not entirely certain and, moreover, the implementation is such that the distance from the feed roller through the control element to the cutting device is considerable. Thus, the corresponding wire length is unguided, i.e. the end end from the roll outlet to the cutting device. These end lengths must be recovered in some way, otherwise they will accumulate in the machinery.

It is an object of the present invention to provide an apparatus for automatically removing yarns or the like from packages and the like, in which apparatus the disadvantage caused by the withdrawal of long free yarn lengths has been removed.

It is also an object of the present invention to provide a device for removing bandages or yarns from packages, which device is made in such a way as to achieve a simple operation with high operational reliability, whereby the device can be made sturdy and simple and at a relatively low cost.

'69994

The objects of the invention are achieved by a device having the features indicated in claim 1.

The drawings show an embodiment of the invention, which is explained below. Here:

Figures 1-4 show a side view of the device in four different stages of operation.

Fig. 5 shows in larger size the same as Figs. 1-4 with certain parts of the device cut away.

Fig. 6 shows a section of the device taken along the line VI-VI in Fig. 1.

Figure 7 also shows a larger section of Figure 1 taken along line VII-VII.

Fig. 8 shows a section of a detail taken along line VIII-VIII in Fig. 5 in a slightly larger size than Fig. 5.

The embodiment of the device according to the invention shown in the drawings and described below is intended for removing the yarns of pulp bales of the type referred to as "domestic bales". Such a complete bale, indicated by reference numeral 1, is formed by two elongate, parallelepiped-shaped single bales 2.

These individual bales are held together by means of two wires 3 on their outer parts (see Figure 6). The two individual bales are further connected into a complete bale 1 by means of a wire 4 extending around both individual bales. Thus, in order to remove the yarns, it is necessary to both cut and pull the yarn 4 so that the individual bales 2 can be separated from each other and to cut and pull out the yarns 3 surrounding the single bale 1 and 2.

1) 5 69994 The device according to this embodiment comprises a frame or rack 5 with a front conveyor track 6 for bringing complete bales 1 into the device, an conveyor track 7 for conveying parts of bales 8 removed from yarns and a second conveyor track 9 for conveying cut yarns. The discharge path 7 terminates in a shaft 10 leading to a device for handling bale pulp, which, however, is not the subject of the present invention and will therefore not be explained. The discharge path 9 terminates above the container 11 for scrap formed by the cut pieces of wire. The container 11 may be made of cotton wool which can be transported out for emptying. These three conveyor tracks 6, 7 and 9 are made in the usual way from chains or belts driven by motors running on rollers. However, transport tracks of this type are generally known and need not be explained in more detail. As can be seen, the upper part of the conveying track 6 runs towards the frame 5 (from left to right in Figures 1 to 4), while the upper parts of the conveying tracks 7 and 9 run away from the frame 5 (from left to right in Figures 1 to 4).

At the bottom of the frame 5 there is a conveyor track 12, which according to Fig. 7 is formed by four chains 13. This conveyor track can be used with motors (not shown) in both directions. In addition, the body has a lifting platform 14 in which several chains 15 extend into chains 13.

The pallet 14 and the conveyor track 12 thus intersect with each other. By means of the control member 16, the lifting platform can be moved between different levels by means of hydraulic cylinders (not shown) in the frame 5. The lifting platform is connected to a vertical plate 13 of the frame with grooves 32 made at points corresponding to the wires 3 and 4.

The body 5 also has a bale inventing device with four units 17, each of which, as shown in Fig. 6, forms a support support 18 and a support drive cylinder 6 69994 19, such as a pneumatic cylinder or a hydraulic cylinder with a piston rod 20 supporting a press plate 21. The drive cylinders 19 outwards from the center of the body and inwards towards its center.

The body has at most two beams 22 which support a reciprocating carriage 23 between them. The rollers 24 carry cotton in the beams 22 and a plate 23 extends between the rollers. This plate 25 supports three clamping devices 26 and a front plate 27 at one end. projecting towards the discharge path 7 (cf. Fig. 1).

One clamp device 26 is shown in part in Figure 8. It is formed by two jaws 30 pivotally mounted on the shaft 29. These jaws 30 are attached to a body 33 comprising a pneumatically or hydraulically actuated actuator for turning the jaws from an open position to a closed position. a piston 34 which can move in the cylinder 35 partially shown by the action of the operating medium. Thus, by means of the mianitated drive of the rod 33 and the piston 34, each clamping device can be made to perform a pinching movement on the one hand and the jaws can be moved in the longitudinal direction of the clamping device on the other hand. Two different positions are shown in Figure 6. The jaws 30 can be made in different ways, and in the three clamp devices 26 shown in Figure 6, the jaws are made for cutting.

The protruding part 36 of the body 5 also has three other clamping devices 37. They are otherwise similar to the clamping devices described and shown in Fig. 8, but differ from the clamping devices 26 in that they are provided with a clamping jaw instead of cutting jaws. All the clamping devices are located at the wires 3 or 4, the clamping devices 26 extending vertically downwards towards the end of the bale 1 inside the body 5, while the clamping devices

II

69994 7 37 protrude horizontally towards the bottom of the bale.

As can be seen from Figure 5, the clamp devices 37 have additional devices. They include a roller device 38 with a rotatably mounted elongate roller 39 adapted by the motor to rotate clockwise in Figure 3. In addition, there is a freely rotating roller 41 movable by two drive cylinders 40. This roller can be made to rest on the used roller as shown in Figure 5 in solid line. 39 or pulls away from it to the position shown by the dotted line, which allows the clamping devices 37 to be moved between the rollers. Between the roller device 38 and the clamping devices 37 there is a cutting device 42 with a lower, elongate fixed blade 43 and an upper blade 44 which can be moved up and down by a drive cylinder 43 slightly overlapping the fixed blade 43 to provide a cutting movement. Below the fixed blade there is a sliding table 46 (see also Fig. 1) which communicates with the conveyor track 9.

In addition to the mechanical devices just described, there is a control system for operating them at specified intervals as described below. In this case, the control system controls both the electric motors for the movements of the conveyor tracks and the drive cylinders for various mechanical functions. One skilled in the art can construct such control systems from known components if the desired control function is established. It may not be necessary to explain the structure of the control system in more detail here, as its operation will be clear from the explanation of operation below.

The device according to the application example, which may have become apparent from the above description, may be located between the delivery location of the double bale 1 conveying path 6 and the pulp processing device, for example a pulp, represented in the drawings by a receiving shaft 10. In this case, said device is adapted to receive bound bales and remove the yarns and forward the pulp as parts of the bales 8. Upon delivery to the machine, the bales 1 are placed on the conveyor track 6 by means of a forklift or other loading device and conveyed on the conveyor track 6 in dotted lines in front of the frame 5 This is the starting point for the next explanation of the operation. In this case, it is also required that the space inside the frame 1 is empty and that the last bale that has entered has already been processed and transported on the transport track 7.

Functional description 1. The transport tracks 6 and 12 are started, whereby the bale 1 is transported to the space inside the body 5 to the position shown in solid lines in Fig. 1.

2. The conveyor track 12 is stopped by a sensor, for example a mechanically sensing, air or electrically operated member, when the bale 1 has come in front of the plate 31 (Fig. 7). The conveyor track 6 also stops, preferably when the new bale 1 has come to a starting position in front of the frame 5.

3. The drive cylinders 19 (Fig. 6) are actuated so that the plates 21 protrude and center inside the bale 1 center station body 3. This central station is positioned so that the clamping devices 26 and 37 (Fig. 1) will be aligned with the wires 3 and 4.

4. The carriage 23 is brought to a position where the clamping devices 26 are located above the bale 1, preferably approximately by its invention. The upper roller 41 of the roller device 38 is in its upper position (dashed line in Fig. 5) and the upper blade 44 of the cutting device 42 is in its upper position (intact lines in Fig. 5).

il 9 69994 5. The middle clamping device of the upper group (26 in Fig. 6) and the lower group (37 in Figs. 3 and 7) is kept open and moved into contact with the bale 1 and closed in this position by means of actuators. In this case, the upper clamping device cuts the wire 4 and the lower clamping device 37, which is made as a clamping or gripping clamping device, clamps around the wire 4 at its lower part. Now the upper clamping device 23 can be pulled back to its inner position.

6. The lower pliers device 37 is pulled back to its inner position, whereby the freshly cut wire is pulled around the bale 1 and forms a loop in front of the pliers device in the inner position.

7. The upper roll 41 is moved down by its drive cylinder 40 and pinches the loop of the wire 4, as shown in Fig. 5.

8. The clamp device 37 is then opened, releasing the loop. Most preferably, the first cutting of the wire is now performed by the lowering of the upper blade 44. Thereafter, the lower roller 39 begins to rotate and feeds the double wire from left to right in Fig. 3. When this occurs, the upper blade 44 is caused by its drive cylinder 45 to perform a downward movement. In this case, the double wire fed by the rollers 39, 41 is cut off with each stroke of the blade 44. The feeding preferably takes place from time to time so that the wire does not move during cutting. By adjusting the stroke frequency of the blade 44 and the feed speed of the rollers, pieces of wire of suitable length can be cut for scraping. These pieces of yarn fall onto a sliding table 46 and then onto a conveyor track 9 which transports them to a scrap container 11. This is therefore continued until the entire yarn 4 has been removed from the bale and cut. To achieve this, the operating time is preferably controlled. When the wire 6 6 is removed, the two single pieces 1it 2 differ from each other.

9. The pallet 14 (Fig. 7) is raised slightly and the conveyor track 12 is also slightly reversed. Due to the fact that in Fig. 2 the right-hand bale is on the pallet 14, it becomes raised above the conveyor chains 12, so that it does not move. In contrast, in Fig. 2, the left-hand bale moves slightly to the left, so that, according to Fig. 2, a gap is formed between the bales 2. Now the pallet 14 can be lowered again. During the movement of the bales, the centering device 17 must not rest against the bales or the carriage 23 on its plates 21, otherwise the movement of the piles would be impeded.

10. The carriage 23 is moved so that, according to Fig. 3, the clamping devices are located approximately in the middle of the right-hand bale.

11. When the inventive device operates, both the outermost upper clamping devices 23 and the two outermost lower clamping devices 37 are moved with their jaws 30 against the bale, the jaws being open. After contact with the bale, the jaws are brought together, whereby the clamping devices 23 cut off both outer wires, while the clamping devices 37 are clamped to them.

12. Now the clamping devices 37 are retracted and the course of events described above is repeated (points 7 and 8), whereby the wires 3 are pulled out of the bale and cut off and removed as scrap to the container 11.

13. The carriage 23 is moved to the left outside the bale 2.

14. The bale 2 on the far right is aligned with the pallet 14.

tl "69994 15. The carriage 23 is moved to the right, whereby the knife 28 cuts off a part of the bale 2 extending above it and the plate 27 pushes the cut piece onto the conveyor track 7 (see Fig. 4). This is in operation and takes the cut piece out

16. When the carriage 23 has completed its stroke and thus cut the entire bale, it is moved back to the left outside the bale.

17. The platform is raised again the distance of the piece so that the new part of the bale 2 comes in front of the carriage 23.

18. The cutting is then repeated with the blade 28. The lifting and cutting operation is therefore repeated until the entire bale 2 has been transferred to the conveyor track 7.

19. The platform 14 is then moved to its lowest position.

20. The transport track 12 is started and moves the remaining bale 2 to the right and centers it when it has come to rest against the plate 31.

21. Next, the previously described cutting and cutting of the wire and delivery to the transport track 7 (steps 13 to 19) are performed.

22. After the pallet 14 has been returned to its lowest position and is in its initial position, a new complete bale 1 can be transported inside the body 5 to remove the yarns and move them to the conveyor track 7.

An important aspect of the described procedure is that the wire is captured to be pulled out so far from the cutting point that a loop can be formed. This makes it easier and more secure to grip the wire by "hooking" the wire, especially in the case of a tightly leaning wire 69994, than if it were attached between two jaws due to friction. In addition, when the fastening point is located opposite the cutting point, the shortest possible pull-out length is obtained for each part of the loop, which facilitates pull-out and reduces the risk of damage to the goods.

The device described, as mentioned in connection with the application example, is particularly suitable for bales of the type described, which are made of two units which, on the one hand, are tied with threads and, on the other hand, held together by one thread. However, within the scope of the invention, it is also possible to make the device for other types of tying or wiring. Thus, there may be a greater or lesser number of ties or wires in which the clamping devices are adapted for them. In the case of long threads or ties, several devices can be arranged. It is also possible to supplement the device with an angled device if cross-linking or wiring occurs. Within the scope of the invention, it is possible to adapt the goods released from ties or yarns to a type of delivery other than the division into parts shown.

il

Claims (7)

69994 13 An apparatus for removing one or more wires (3, 4) or a bandage, for example from packages (1) and comprising a place (5) for placing the package (1), at least one clamp device (26) or the like for contacting the package, said wires (3) , 4) or to provide a bonding point and at least one gripping device (37) adapted to be guided between the first station in contact with the package and thereby gripping the wire or yarns and spaced between the second station in the package and moving from the first station to the second station bandages from the package for a short distance without completely removing them from the package and to said yarn or bandage feeder (38) positioned adjacent the first station of the gripper (37) and adapted by a plurality of rollers (41, 43) to grip the free portion of said threads or bandages between this in another a and by rotating the rollers to feed out the respective wires or ties between them to a cutting device (42) adapted to successively cut said wires or ties into short pieces by means of the feeding device during feeding, characterized in that both the rollers (41, 43) and the cutting device (42) is arranged along the transition path of the gripping device (37) between its first and second positions and is adapted to open so that the gripping device (37) can pass through the cutting device and feeder in the first position to pull the wires (3, 4) or ties 41, 43) and as they are pulled through the gripping device (42) when moving from the package to the second position, and that the rollers (41, 43) ^ 69994 of the feeders (38) are adapted to close around the wires or ties as the gripping device (37) passes therethrough. when moving to another position. Device according to claim 1, characterized in that the clamping device (26) or the like is separate from the gripping device (37) and adapted to form a breaking point with said wires (3, 4) or ties with respect to the gripping point of the gripping device (37) of the package (1). on the opposite side so that the gripping device grips the wires or ties at their unbreakable point and pulls them twice through the rollers (41, 43) of the feeder (38) and through the cutting device (42). Device according to Claim 1 or 2, characterized in that the clamping device (26) and the gripping device (37), respectively, comprise a plurality of pliers or the like, respectively gripping elements, and both, arranged in position, can cut their own, respectively gripping package (1). several threads or ties. Device according to one of the preceding claims, for removing yarns (3, 4) or ties from packages (1) consisting of a plurality of units (2), each provided with a plurality of threads (3) or ties, held together to form the package (1) in its complete state by means of a plurality of wires (4) or ties, characterized in that the setting place (5) is adapted to receive the complete package (1) and is provided with said clamping device (26) or the like and a gripping member (37) to cut one or more wires (4) holding the complete package (1) together, to grip or adhere to them, respectively, by a transport device (12, 14) for selectively moving the units after removing the wire or wires holding together and by a clamping device (26) and a gripping member (37), which device and member may be similar to the above device and member of the unit wire or wires (3 ), the conveying device (12, 14) being adapted to move the unit or units which do not or will not be immediately exposed to any removal from the unit from which the wires or bandage is to be removed, and adapted to carry away the unit from which the wires or ties have been removed and to carry forward the next unit to be removed. Device according to claim 4, characterized in that the conveying device is formed on the one hand by the conveyor track (12) and on the other hand by a lifting platform (14) which is later adapted to take position below and above the conveyor track level and a control device adapted to hold the platform in its lowest position during transport. , to the position of the complete package (1) via the conveyor track (12) during transport, to keep the platform slightly raised and then to hold one unit (2) above the conveyor track (12) and to convey the unit or other units on or across the conveyor track via the conveyor track , away from the former unit and alternately to transport the units (2) from which the wires or ties have been removed from the setting point (5) by lifting by means of a lifting platform and holding the lifting platform in its lowest position via the transport track (12) to the handling site during transport. the idea has not been deleted. Device according to claim 5, characterized in that the control device is adapted to gradually raise the platform i6 69994 and then move the blade device (28) back and forth through the unit from which the wires or ties have been removed to divide it before leaving the setting position (5). Device according to Claim 6, characterized in that the carriage (23) is adapted to support the blade device (28) for dividing the units (2) into parts and to support the clamping device (26) so that it can be transferred onto the packages. il 17 Patentkrav 69994