FR2727085A1 - METHOD OF INTERMEDIATE STORAGE OF FLAT OBJECTS, IN PARTICULAR TUBULAR TRUNKS DEPOSITED BY BATTERIES, AND DEVICE FOR IMPLEMENTING THE PROCESS - Google Patents

Abstract

The invention relates to a method and a device for the temporary storage of flat objects, in particular of tubular sections deposited in stacks. The device comprises a winding axis (18) on which the flat objects conveyed on a winding strip (26) can be deposited in the form of a roll. The basic body constituting the winding axis comprises a step extending parallel to its central axis. As a result, the tubular sections with aligned edges, deposited in stacks (12) can be wound up without the tubular sections being moved relative to each other. The invention is applicable to the manufacture of bags or sachets.

Description

The invention relates to a method and a device for storage

  temporary flat objects, including tubular sections deposited by batteries, with a winding shaft housed so as to be driven into a frame and on which can be deposited the flat objects in the form of coil

  conveyed by a winding tape.

  A device of the generic type is known for example from the German patent application 10 39 444. There is described a device for the transport and storage of a large number of identical objects, which are placed on a support in the form of tape whose surface is self-adhesive and which are then wound together with the tape-shaped support into a coil and thus stored. If necessary, the tape-shaped support can be unwound again and the corresponding objects adhering to the surface

  self-adhesive tape can be removed.

  German Patents 25 26 432 and 26 58 294 respectively disclose devices for isolating and feeding flat objects stored with support strips by forming a flake-shaped strip of roll to subsequent stations where the paper bags are completed. are

  wound in a flow of scales to form a coil.

  However, during this winding process, only relatively thin layers which have been deposited in the form of a flake of scales have been rolled up so far. To deposit comparatively thicker objects, according to the prior art as set forth in German Patent Application No. 10 39 444, the surface of the winding tape has been made to be self-adhesive to prevent as far as possible. possible unwanted movement of objects during winding or unwinding or during temporary storage. For example, during the manufacture of bags, the problem often arises in the practice that intermediate products, during the manufacture of the bags, can not be processed directly in a subsequent machine so that temporary storage is required. corresponding intermediate products. For example, tubes made in large numbers by a tube extruder can not be fully processed by the subsequent forming device. In practice, therefore, two devices are often

  fundraising following a tube extruder.

  But in the case where one installs only a fund-making device, tubular sections produced that can not yet be brought to the fund-making device are stored temporarily. The bags are supplied by the tube extruder as a rule in the form of bundles of bag sections whose edges are aligned, i.e. in the form of packets of, for example, 40 superimposed tubular sections which have, for example, a height of 15 cm. Until now, such bags were then fed by long storage belts on which they had been pushed along a long path, for example a storage band longer than 100 m, in the production room and there. were forwarded for further processing. So, this storage band is used here as a buffer. Another comparatively complex solution was to deposit stump piles

  tubular in the form of a pallet stack.

  Now, the object of the present invention is the improvement of a device of the generic type for the temporary storage of flat objects so as to allow here in particular also a temporary storage of the tubular sections deposited by piles without the tubular sections whose edges are aligned. move mutually during winding on the winding axis so that the tubular sections can no longer be removed as aligned banks of the device for temporary storage. The invention also indicates a corresponding method. This object is achieved by a method according to which tubular sections or bags formed therefrom having longitudinal weld seams oriented in the same direction are fed in a first step to form aligned-edge stacks of predetermined height. and in that in a second step, the formed piles are wound into a roll, the different winding layers of the roll being separated from each other. According to another characteristic of the invention, the tubular sections or the bags formed from them are wound so that the weld seams

  longitudinals extend parallel to the winding axis.

  According to yet another characteristic of the invention, the different cells are compressed before winding up

for a short time.

  In addition, the object is reached by a device of the generic type, wherein the base body constituting the winding axis has a step extending parallel to its central axis. This step constitutes according to the invention an application edge approximately at the height of the first stack conveyed. It prevents during winding that the bags placed in the stack move relative to each other. In that the first stack of bags, as a result of the step, is deposited in an alignment of the edges, the bags then deposited will also be deposited from

  so that their edges are aligned.

  According to a particular embodiment of the invention, the winding axis consists of a cylinder on the envelope of which parts can be placed to form the step. It is thus easy to transform the winding axis according to the stack of bags to be stored temporarily, that is to say according to the height of the

it.

  According to another preferred embodiment of the invention, the winding axis may consist of a cylinder in which, to form the step, a segment is pivotally housed at one side. In this embodiment, the segment can be folded outward to the desired height which allows to set the height of the step on the basis of the pivot angle of the cylinder segment. In this case, the cylinder segment can be held on its side at its freely pivoting end by pull springs, and it can be moved by an eccentric with flat surfaces of this segment against the spring force to form a height of different step. On the other hand, at one or both sides of the pivoting segment, respectively at the free end, a bolt may laterally project into which engages a fork of a pivoting adjustment lever which can engage in different interlocking positions in the cylinder. We

  can also adjust a different step height.

  According to another preferred embodiment of the invention, the winding strip extends essentially over the entire width of the flat objects conveyed. It is thus ensured that the sections of bags exiting, for example, an extruder of tubes which have just been glued along one or two longitudinal beads and whose glue has not yet hardened are compressed uniformly over their entire length. and respectively width so that the applied glue remains evenly distributed on the surfaces

corresponding glue.

  According to a preferred embodiment of the invention, there can be arranged in the frame a motor-driven strip roll by which the winding strip is guided by a control device of the motor of the web roll and by return rollers. The motor control device of the web roll may consist of a return roller pivotally mounted in lateral rods and on which the winding belt is guided. In addition, it may include initiators which indicate the position of the return roller pivotally housed. By means of the pivotally mounted return roller, the winding belt can be deflected sufficiently to form a sort of tape storage device. When the winding tape is removed from the tape storage member to unwind the newly delivered packets, the deviated winding tape is shortened and the pivotally articulated back roller is rotated. By an end position initiator, the tape roll motor is then controlled so that again a corresponding length of the winding tape is unwound and the loop, and hence the tape storage member, is again enlarged. According to another advantageous embodiment of the invention, the winding roller can be guided longitudinally in the frame. In this case the winding roller can be moved by two lateral threaded rods adjustable by transmission motors. There may also be a control device for the gear motors which may be designed such that at least one application roller which is movably guided alongside the frame and which is applied to the roller in the area of the machine. The tape entrance can be moved in accordance with the winding roller, the displacement being detectable by initiators. Depending on the position of at least one application roller determined by the initiators, the assembly of the coil is moved upwards in the frame via the respectively controlled transmission motors. According to another embodiment, an application device has been placed in the input zone of the device in front of the winding strip which, in the immediate entry zone, can respect relatively to the stack of tubular sections a predetermined distance is passed, and after the entry of this stack, it compresses it to firmly apply for example the areas glued to each other and thereby cause a better solidification of the glue. The application band can be rotated from its working position by a piston and cylinder unit into a

rest position.

  The motor of the tape roll and the winding motor are advantageously made in the form of motor brakes, because then we can maintain in the band

  winding a desired pulling force.

  The invention will be better understood and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention and in which: - Figure 1 is a side view of an embodiment of the device according to the invention during winding; FIG. 2 is a front view of the device according to FIG. 1; Figures 3 to 6 are schematic side views of various embodiments of winding rollers; FIG. 7 is a side view of the device according to FIG. 1 during unwinding; and - Figure 8 is a front view of the representation

according to Figure 7.

  In the device 10 shown in this embodiment, stacks or packs 12 of tubular sections whose edges are aligned are temporarily stored, which come for example from a tube extruder which is not shown here in more detail. A stack may consist for example of 40 tubular sections and reach a height of about 15 cm. Of course, any other stack size can be processed. The stacks 12 are conveyed by a conveyor belt 14 in the direction of the arrow shown in FIG. 1. As shown in FIG. 1, the device 10 consists of a frame 16 in which is suspended in a displaceable manner in height in guides 20 a winding axis 18 whose precise construction will be described later. The height adjustment takes place by means of the threaded rods 22 which can be moved upwards and downwards by means of transmission motors 24 so that the winding axis 18 is displaceable in height together with the coil wound. The winding motor 24, made in the form of a brake motor, makes

projecting laterally from the frame 16.

  The winding spindle 26 is wound on the winding spindle together with the stacked stacks extending over the entire width of the packs 12. The winding strip 26 is unwound from a web roll 28 which is also housed in the building. The web roll 28 has on its sides a web roll motor 30 which is also embodied as a brake motor and thereby maintains the necessary tension of the winding web 26. From the web roll, the winding strip 26 passes over a return roller 32, a control device 34 of the web roll motor 30, another idler roll 36 and a return roller 38

  before coming into contact with the winding motor 18.

  In the case of the return roller 38, the entry area for the conveyed piles 12 is in the device 10. Opposite this entry zone of the winding strip 26 is an application band 40 which is guided on two rollers 42 and 44. The roll 42 oriented towards the conveyor belt 14 is positioned in this case so that at the beginning

  it does not come into contact with the stack yet.

  It therefore rises on the winding strip 26 and is then gripped by the corresponding application strip 40 which compresses the tubular sections of paper which have just been glued so that the glue is well distributed and thus hardens easier. The application band can be rotated by a piston and cylinder unit 46 which on one side is integral with the frame and which is articulated at its other side to the lateral side of the application band. The winding strip 26 is unwound at a speed which is less than the transport speed of the conveyor belt 14. Thus the individually conveyed piles 12 are brought into direct application to one another so that they can be wound up. one after the other saving space, as indicated on

  Figure 1 and in particular also in Figure 7.

  The control device 34 for the tape roll motor 30 is constituted, as to its core, a return roller 48 which is housed on the sides in connecting rods 50 pivotable about a point 52 integral with the frame. Piston and cylinder units 54 are articulated to the free ends of the connecting rods 50. In front of the pivoting free end of at least one slide 50, initiators 56 are arranged on one another and can be controlled for example by contact with the free end of a connecting rod 50. By the pivotally mounted return roller 48 is formed to the winding strip a loop as shown for example in Figure 1. The batteries 12 are now transported in a discontinuous manner, and for each additional stacked stack, a portion of the winding strip 26 is wound by the winding motor on the roll which is formed on the winding axis 18. The loop formed around the Return roller 48 is thus shortened and rods 50 are pivoted upwards. As soon as the rods 50 have reached a predetermined extreme point, they are in front of the upper initiator 56 which then controls the tape roll motor 30 and which causes it to convey the corresponding winding tape. by means of the piston and cylinder units 54 which are respectively under prestressing, the rods 50 pivot again downwards. This ensures that the necessary voltage is

  always kept at the winding tape.

  There is further provided a control device 58 for the transmission motors 24 for moving up and down the winding axis 18. The control device 58 consists of two application rollers 60 and 62 which are also housed in a displaceable manner in height in the frame 16. The application rollers 60 and 62 are opposite the entry zone of the winding axis 18 and, respectively, of the roll wound thereon and are biased down against prestressing of the piston and cylinder unit 64 as the roll diameter increases. As a result of the downward movement, corresponding initiators 66 are initiated by a contact flag 68, which controls the transmission motors 24 and causes an upward movement of the axis

winding 18 and the roll.

  Various embodiments of the winding axis 18 are shown in FIGS. 3 to 6. All the embodiments have in common a step 70 which extends over the entire length of the winding axis 18 and which is parallel to the central axis of the winding axis 18. I1 is shown in Figure 3 a corresponding base body 18 with a step 70 which is not adjustable. This basic body has

  approximately the shape of a spiral.

  According to the embodiment according to Figure 4, the base body of the winding shaft 18 consists of a cylinder on which can be fixed correspondingly shaped corners 72 which constitute a different height step 70. This allows , depending on the desired stack thickness, the realization of a different step shape by the setting

place a corresponding corner 72.

  In the embodiments according to Figs. 5 and 6, respective cylinder segments 74 are pivotally disposed about a center of gravity 76, the outward pivoting of these cylinder segments causing an adjustment of the height of the cylinder. step 70. This adjustment takes place in FIG. 5 by an eccentric 78 with flat surfaces 80 which apply correspondingly to the segment of

  cylinder 74 and which thus define the height of the step 70.

  The cylinder segment 74 is urged respectively to its

  free swivel end by pulling springs 82.

  In the embodiment according to FIG. 6, the cylinder segment 74 is pivoted by an adjusting lever 84 which is L-shaped and can pivot about a bolt 86 in the direction of the arrow b and which can be fixed in notches 88. On one side, the lever 84 is fork-shaped, the fork being engaged with a bolt at the free end of the cylinder segment 74. Such levers can be provided on both sides of the winding axis 18 or only to one side of the winding axis 18. In FIGS. 7 and 8, the device 10 is represented during the unwinding of the stacks 12. Here, the application band 40 is raised from the stacks 12 via the piston and cylinder unit 46. The stacks 12 are transmitted to the conveyor belt 14 extending in the direction of the arrow c which rotates again at a higher speed that the winding tape 26 which is again

  wound on the web roll 28.

Claims (18)

CLAIMS CATIONS   A method of storing tubular sections or bags formed therefrom, characterized in that tubular sections or bags formed therefrom having longitudinal cords oriented in the same direction are fed, when a first step, forming piles of a predetermined height whose edges are aligned and in that, in a second step, the formed piles are wound into a roll, the different layers   winding the roller being separated from each other.   2. Method according to claim 1, characterized in that the sections of pipe and, respectively the bags formed from them are wound, so that the cords   longitudinals extend parallel to the winding axis.   3. Method according to one of claims 1 or 2,   characterized in that the different stacks are compressed   for a short time before winding.   4. Device for implementing the method according to   one of claims 1 to 3, where is housed so as to   it is possible to drive a winding axis in a frame, characterized in that there is provided a stacking device known per se from which the individual stacks are fed on a winding strip and this winding strip loaded with piles is wound into a roll, the beginning of the winding band being fixed to the axis winding.   5. Device for the temporary storage of flat objects, in particular of pipe sections deposited by piles, with a winding shaft housed so as to be able to be driven into a frame, and on which the flat objects conveyed on a winding strip can be deposited in the form of a roll, characterized in that the base body constituting the winding axis has a step extending parallel to its central axis.   6. Device according to claim 5, characterized in that the winding axis consists of a cylinder on the envelope of which can be placed parts for form the step.   7. Device according to claim 5, characterized in that the winding axis consists of a cylinder in which, to form the step, a segment is housed so pivoting on one side.   8. Device according to claim 7, characterized in that the segment is retained at the pivoting step by one or more traction springs, and that the segment can be pivoted by means of an eccentric with flat surfaces, against the spring force to form bleachers of different height.   9. Device according to claim 7, characterized in that it is arranged at the free end of the pivoting segment on the side a bolt in which engages a fork of a pivoting adjustment lever which can engage in   different interlocking positions.   10. Device according to one of claims 5 to 9,   characterized in that the winding strip extends   substantially all the side of the flat objects conveyed.   11. Device according to one of claims 5 to 9,   characterized in that a motor-driven strip roll is disposed in the housing from which the winding strip is guided via a control device for the web roll motor and by means of return rollers.   12. Device according to claim 11, characterized in that the control device for the motor of the web roll consists of a return roller pivotally housed in lateral rods on which is guided the winding strip, and initiators that detect the   position of the return roller pivotally mounted.   13. Device according to one of claims 5 to 12,   characterized in that the winding roll is guided from   movable way in height in the frame.   14. Device according to claim 13, characterized in that the winding roller is movable by two lateral threaded rods which are adjustable by motors of transmission.   15. Device according to one of claims 13 or 14,   characterized in that a control device is provided for transmission engines.   16. Device according to claim 15, characterized in that the control device also has at least one application roller which is laterally displaceable in the frame and which is applied to the roller in the inlet area of the housing. band, the application roll being movable by changing the diameter of the roll and the   displacement that can be detected by initiators.   Device according to one of claims 1 to 12,   characterized in that it is arranged in the entry zone for the flat objects to temporarily store an application device in front of the winding strip which can be   brought from a working position to a rest position.   18. Device according to one of claims 5 to 17,   characterized in that the tape roll motor and the   motor winding are motor brakes.