Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
  • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
  • B65B61/12—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by tearing along perforations or lines of weakness

Definitions

• the invention relates to a transport and separating device for transporting and separating tube pieces from a pre-perforated and / or pre-cut tube, in which the pre-perforated tube piece is torn between pairs of tear-off rollers and feed roller pairs operated at a higher speed and in which the distance between the pair of tear-off rollers last preferred roller pair is adjustable by changing the position of a roller.
• Such transport and separation devices are used primarily in bag machines. Numerous publications are already dealing with such paper bag machines. Examples include DE 41 15 161 A1, DE 42 05 062 A1 and DE 25 48 161. In such machines, devices are used which separate the already pre-cut or pre-perforated paper tube into paper tube sections. On such machines, format changes, that is to say changes in the bag height or the length of the paper tube section, are carried out frequently. For this purpose, the distance between two perforation or cut lines on the paper tube is changed. As a rule, this is done by an adjustment to a perforation or cutting cylinder intended for this purpose. Furthermore, settings are made on the transport and separation device, particularly in the case of paper bag machines. With such a transport and separating device deals among other things DE 35 42 923 A1, whereby the questions dealt with in this application are not illuminated. Therefore, the underlying description of the prior art is discussed again in the present description.
• the adaptation in the transport and separating device consists in that the distance between a tear-off roller pair and at least one feed roller pair is set according to the desired section length.
• this is done by setting the preferred rollers upstream of the tear-off roller pair in the direction of the sports arm z of the paper tube.
• at least one of the feed rollers is lifted off the paper tube section to be separated, so that there is no longer any fixation of the paper tube section between the pair of feed rollers concerned.
• the tear-off roller is operated at a higher peripheral speed than the feed rollers, the paper tube section is separated from the subsequent paper tube.
• this measure not only affects the last pair of preferred rollers upstream of the tear-off roller, but can also affect several of these preferred roller pairs.
• One of the preferred rollers of the preferred roller pair is lifted off via a cam-controlled differential adjustment. Therefore, changes of these curves are usually necessary when the format changes. For this reason, the adjustment work required to change the format is complex.
• the object of the present invention is therefore to propose a transport and separation device in which format changes can be carried out with less effort.
• This object is achieved in that the position of at least one tear-off or feed roller in the transport direction z of the bag components can be changed.
• This invention can be carried out particularly advantageously if this one roller is the last and / or the penultimate preferred roller, which is the Tear-off roller pair is upstream in the transport direction of the bag components. Then the distance between the last pair of preferred rollers, which actually grips the paper material, and the tear-off roller can be set. Because of the measure according to the invention, a large number of preferred rollers can be dispensed with. It is therefore particularly advantageous if a plurality of preferred rollers guide a transport belt which ensures that the bag material can be guided in the tear-off unit over a longer distance without falling into gaps between the rollers. Furthermore, this measure is advantageous in connection with an adjustability of the last or penultimate pair of transport rollers in front of the tear-off roller pair, since further adjustment in the direction of the bag components can no longer lead to gaps between rollers.
• the use of the tear-off mechanism according to the invention in particular in the manufacture of bags, is advantageous.
• Transport and separating devices according to the invention can, however, also be used to tear off pieces of hose which are further processed for other purposes.
• Transport and separating devices according to the invention can, however, also be used to tear off pieces of hose which are further processed for other purposes.
• Processing for the paper tube material, a singling station and a bottom formation and gluing station include.
• Bottoming stations of these devices typically include one
• FIG. 1 A sketch of a device according to the invention with a conveyor belt.
• FIG. 2 A sketch of a tear-off device according to the prior art. 1 shows a transport and separating device 1 according to the invention in a sketch from the side.
• a hose 6 is fed along the transport path 4 of the hose 6 or the hose section 8 in the transport direction z.
• This hose 6 first passes through a cutting unit 9, which at least partially provides the hose 6 with cuts transversely to its transport direction z.
• the sections not provided with cuts have as a rule already been provided with perforations beforehand, the cuts and the perforations essentially running on a line P.
• This 9 consists of the cutting roller 10, the counter-layer 11 and the cutting knives 12, 13 assigned to these two elements.
• the length of the individual hose sections 8 and thus the Predetermined length of the later pouch By adjusting the cutting knife 13 or by the distance between two cross sections running transversely to the transport direction z, the length of the individual hose sections 8 and thus the Predetermined length of the later pouch. But first the hose 6 is transported further along the transport direction z into the transport and separation device 1. There he reaches an area in which he is clamped between the upper and lower transport belts 14 and 15 and is transported by these. In the spatial direction x transverse to the transport direction z of the bag components there is another belt that is not visible in the drawing. All belts are guided and / or driven by the different take-off rollers 2a, 2b, 2.
• the transport and separation device 1 consists of such a double belt construction, in which two belts each grip one side of the sack components and two such belt systems are provided in the spatial direction x extending transversely to the transport direction z of the hose 6 or the hose sections 8.
• the distance between the pairs of belts can be changed in the direction x.
• the lower belts can also be designed as a wide belt, which then has at least the width of the largest hose width that can be processed in the entire bag machine.
• the take-off rollers 2a and 2b which are upstream of the tear-off roller pair 3 consisting of the rollers 3 are in the transport direction z of the bag components slidably mounted.
• the take-off roller 2a is arranged in such a way that the belt 14 no longer abuts the hose section 8 in this area.
• a funnel-shaped opening is created behind the take-off roller 2b between the transport belts 14, 15.
• the relevant hose section 8 is no longer guided in a clamped manner. If the hose section 8 is gripped by the tear-off rollers 3 and the next perforating or cutting line P is already in the region of the funnel-shaped opening, the hose section 8 is separated from the hose 6.
• the take-off roller 2b can be displaced in the transport direction z.
• the length of the funnel-shaped opening can be adjusted in accordance with the desired length of the hose section 8 such that the hose section 8 to be separated just reaches the funnel-shaped section with its perforation line.
• the area of the hose 6 directly at the perforating or cutting line P is then held almost completely clamped between the belts 14, 15 at the moment of severing.
• the torn off hose section 8 achieves a certain advance due to the somewhat faster rotation of the tear-off rollers 3. In this way, the hose section 8 transported along its transport path 4 can be processed further independently of all other hose sections. Further processing usually takes place in the subsequent floor maker.
• the take-off rollers 2a and 2b can be moved in the direction y perpendicular to the transport direction z. In this way, the entire belt transport can be adjusted to the strength of the hose 6.
• I advantageously have the take-off rollers 2, 2a, 2b separately shifted for each of the belt transport constructions described above, in order in this way also to have hoses that have different thicknesses over their width; to be able to process reliably and precisely. Different thicknesses across the width of the hose come about, for example, due to the overlap and bonding required for hose formation.
• Figure 2 shows a tear-off device according to the prior art.
• a pre-perforation takes place in a perforation unit provided for this purpose and an at least partial incision in the cutting unit 10, which again consists of the cutting roller 10, the counter-surface 11 and the knives 12 and 13 assigned to these two elements.
• the transport takes place along the transport path 4, the illustration of the bag components 6, 8 being dispensed with.
• the actual transport takes place again through the take-off rolls 2, 2a, 2b and 2c, the hose sections 8 should not be smaller than the distance between two such roll pairs in order to be able to transport the hose sections 8 reasonably.
• the bag components are usually fed to a soil-making cylinder after the transport and separating device 1, if this device 1 is part of a bag machine. How 2, no sack components were shown for illustrative reasons.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Making Paper Articles (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Supplying Of Containers To The Packaging Station (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34398888

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (2)

Citations (3)

Family Cites Families (3)

• 2003
  • 2003-09-22 DE DE10344157A patent/DE10344157B4/de not_active Expired - Fee Related
• 2004
  • 2004-09-15 DE DE502004002989T patent/DE502004002989D1/de active Active
  • 2004-09-15 EP EP04765237A patent/EP1667914B1/de active Active
  • 2004-09-15 JP JP2006527311A patent/JP4795953B2/ja not_active Expired - Fee Related
  • 2004-09-15 AT AT04765237T patent/ATE354523T1/de active
  • 2004-09-15 WO PCT/EP2004/010326 patent/WO2005032946A1/de active IP Right Grant

Patent Citations (3)

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