Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B70/00—Making flexible containers, e.g. envelopes or bags
  • B31B70/005—Making flexible containers, e.g. envelopes or bags involving a particular layout of the machinery or relative arrangement of its subunits
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B70/00—Making flexible containers, e.g. envelopes or bags
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
  • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
  • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
  • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2160/00—Shape of flexible containers
  • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2160/00—Shape of flexible containers
  • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents

Definitions

• the invention relates to an apparatus and a method for the production of sacks, which comprise fabrics of stretched plastic tapes, according to the preamble of claim 1.
• Such devices are known and have been available on the market for a long time. As a rule, these devices initially comprise a separating device in order to separate a supplied fabric hose, which may also be coated, into hose pieces. These consist of two superposed material webs. The pieces of hose are then taken over by at least one transport device in order to spend them in the individual processing stations. In the following individual stations are listed and their function explained.
• Pulled hose piece so that at this end raised a bottom can be formed.
• the EckeinMge are located on the fold lines of the hose piece. Due to its geometric shape, the bottom opening is also called floor opening square. It should be noted that the shape is not square, but in most Cases is rectangular. In general, both ends of a piece of hose are processed in the same way.
• valve leaflet is placed on the previously opened bottom of the tube piece. Through the valve leaflet later the finished bag can be filled using a suitable filler neck.
• the individual processing steps of the above-mentioned processing stations are usually performed at both ends of the tube piece. These stations are the same structure in the existing machines on the operator and drive side with respect to the processing stations.
• a valve is placed on the open bottom on a bottom opening in the valve dispensing station.
• the bag is later filled with a suitable filling member.
• Zulegestation the bottom opening of the bag is folded, so that subsequently in the ground cover sheet station by welding the bottom opening thereof with a bottom cover sheet of the bag is completed.
• the object of the present invention is therefore to propose an apparatus for the production of sacks, which comprise woven plastic tape fabrics, which facilitates the accessibility of the processing stations, for example for maintenance purposes.
• At least one processing station on the operating side is at least partially offset from a similar processing station on the drive side.
• similar is meant in this context that the processing stations the same processing steps on Carry out hose section or have the same function.
• processing stations on the operating side (BS) and the similar processing stations on the drive side (AS) are arranged completely offset from one another.
• completely staggered it is meant that the working areas of the processing stations do not overlap in the transport direction of the tube piece.
• This zipper-shaped structure of the processing stations allows the individual tools of the stations can work without hindrance.
• the accessibility of the individual processing stations is increased by this design and the maintenance of the same simplified.
• first all processing stations are successively arranged on the operator side (BS) and the similar processing stations completely offset on the drive side (AS).
• BS operator side
• AS drive side
• one end of the bag is first completely finished before the other end is processed by the stations on the opposite side.
• the transport device is advantageously a double-belt conveyor comprising, for example, magnets.
• the reciprocal conveying of the hose pieces or bags on the opposite sides of the machine is necessary when the bottom center distance of the bottoms of the bag ends is very small, so that the similar processing stations can no longer process the bag at the same time.
• the floor center distance is defined by the distance of the folded edges, which arise at the bottom opening.
• the conveyor belts would overlap with these very small bag formats, if they were on both sides, over the entire Machine expansion in the x direction, would run.
• the first transport device conveys the piece of hose along the processing stations of the first side (operator side or drive side). Subsequently, the bag is taken over by the second transport device and guided along the processing stations of the second (other) machine side.
• FIG. 1 is a schematic diagram of an apparatus for producing tissue sacks.
• FIG. 2 is a perspective view of a bottom opening station in a device according to the invention.
• Fig. 3 View III - III of Fig. 2 Fig. 4 View IV - IV of Fig. 3 Fig. 5 View V - V of Fig. 2 Fig. 6
• FIG. 7 A further embodiment according to the invention of a sack making machine
• FIG. 8 A further embodiment of a sack making machine according to the invention
• FIG. 1 schematically shows individual steps for processing a fabric tube into sacks, as they take place in sack making device 1.
• the fabric tube 2 is fed to the sack manufacturing device 1. This advantageously takes place by unwinding the fabric tube forming a lap 3 in a development device 4. Subsequently, the tube 2 undergoes the so-called opening in the opening station 5. In this case, the fabric tube is guided around an inner tool, which separates the two layers, so that the layers, if they were glued together in one of the manufacturing steps of the tube separate , Only with separate layers can it be ensured that the following production steps can be carried out properly. Afterwards, the separate material layers of the hose are put back on top of each other.
• the fabric tube is now fed to the cross-cutting device 6, which separates the fabric tube into individual pieces of hose.
• both ends of each tube piece are opened and the so-called bottom squares are laid.
• valve station 9 a valve is placed and secured on one of the two open ends.
• the open bottoms are now closed in the bottom closing station 10, wherein two tabs are placed on each other and each other permanently, for example by welding, are connected.
• the conclusion of the actual Sackherstellreaes forms the application of a ground cover sheet on the floors in the cover sheet station 11.
• the cover sheets can also be welded.
• the finished bags are then placed on the bag stack 12 and transported away from there on unspecified manner.
• FIG. 2 shows details of an opening station 5 in a device according to the invention.
• the tube pieces 13 are by means of a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontally transported.
• this end is first brought from the horizontal position to a vertical position.
• the hose piece must be counteracted.
• the hose piece 13 is threaded under a folding belt 16.
• This folding tape can be relative to the hose pieces in peace and thus relative to the support in motion.
• the hose pieces can also move relative to the folding belt 16. This is the case, for example, when the seam is at rest.
• the rebate belt may consist of a flexible, but highly prestressed material. Preferably, however, these consist of steel sheets, which are connected in a manner not shown with the support 14 or with the machine frame. Steel sheets have the advantage over other components of a smaller thickness with the same load capacity. If the hose piece 13 is threaded, it is then guided past a guide element 17, for example a baffle.
• the opening of the second end 15 'of the tube piece 13 takes place in the same way, but offset from the opening of the first end 15.
• the first end is already opened in the bottom opening device 18, while the second end 15' is guided under the folding band 16 '.
• the open bottom 19 ' is generated in the manner described above.
• the piece of tubing with open bottoms 19, 19 ' is present, wherein all components of the opened bottoms are located substantially in the plane of the support 14.
• each bottom opening device 18, 18 ' is supplied with torque by its own drive. This is illustrated by the motor 22 on the bottom opening device 18. The corresponding motor on the bottom opening device 18 'is not visible in the illustrated view.
• the motor of a bottom opening device 18, 18 ' primarily supplies the suction bars with a drive torque, so that they can move the material layers away from one another. Also, the spreading elements are powered by this engine with torque.
• FIG. 3 shows the view III-III in FIG. 2.
• details of the bottom opening station 8 can be seen.
• suction strips are provided, of which the suction strip 20 facing the viewer can be seen.
• suction pad 20 sucker are arranged, the viewer facing side of the end 15 of the hose piece 13 to capture.
• the folded ends 15 of the hose pieces 13 have different heights H.
• they should engage as close as possible to the upper end of the end 15.
• the suction pads 20, 20 'on vertical guides 21, 21' releasably secured, so that the suction pads in the direction of the double arrow y along the folded ends 15 can be moved and adjusted according to their heights H.
• the guides can be made in various ways. These can be round or rectangular profiles that are solid or hollow.
• FIG. 4 shows the view IV - IV of Figure 3.
• the suction bar 20 and the front guide 21 are now also the suction bar 20 'and the guide 21' can be seen.
• FIG. 5 shows the view V - V of FIG. 2.
• the pressure roller 23 is mounted in a lever arm 25 or in a lever arm pair.
• the lever arm 25 itself is pivotally mounted in the machine frame or in attachments 26 of the machine frame.
• the lever arm 25 about an axis 27 which is fixedly connected to attachments, pivotable and fixable on this axis.
• a suitable, but not shown clamping device may be provided.
• lever arm is freely rotatably mounted on the axle 27.
• lever arm 25 is fixedly connected to a shaft which is rotatably mounted in the attachments.
• the pressure roller 23 can now act on the opened trays with a predetermined force, for example its own weight.
• the support 14 which is shown in the figure 2 serve.
• a counter-pressure roller 24 with which the pressure roller 23 forms a nip in which the open trays 19 are compressible.
• the counter-pressure roller can be rotatable, but arranged fixed to the frame.
• FIG. 6 shows an inventive embodiment of a sack making machine.
• the individual processing stations are shown here only schematically.
• the tube section 13 is guided transversely to its longitudinal axis, which runs in the z-direction, in the x-direction initially along a bottom opening station 8 on the operating side BS.
• the associated pressure roller 23 smoothes the newly formed blind opening. While the tube piece is still being transported in the x-direction, a bottom opening 19 'is formed at its second end 15' by a bottom opening station 8 'on the drive side AS. This 8 'is arranged in the x-direction offset to the bottom opening station 8 of the operator side.
• the associated pressure roller 23 ' also smoothes the currently open bottom 19'.
• the piece of hose is guided to a valve dispensing station 9, which applies a valve to the bottom opening 19, through which later, with the aid of a suitable filling member, the filling material can be introduced into the bag.
• valve dispensing station 9 which is arranged only on one side, preferably the operating side, can also be arranged opposite one of the bottom opening stations 8, 8 '.
• valve pad station 9 so opposite or at least partially overlapping the bottom opening station 8 '. In this configuration it is possible to produce bags with very small center spacings. In addition, the device comes out with the smallest possible length.
• the bottom openings 19, 19' then folded before in the bottom cover sheet station 11, 11 'the cover sheets with selbigen 19, 19' welded or glued with a suitable adhesive (extrudate, cold glue, etc.).
• the two Zulegestation 10, 10 ' are arranged opposite each other in the present embodiment. The same applies to the two bottom cover sheet stations 11, 11 '.
• FIG. 7 shows a further embodiment of a sack-making machine 1 according to the invention.
• the tube pieces 13 are first guided transversely to their longitudinal axis in the x-direction, with the aid of a first transport device 30, successively to the processing stations 8, 9, 10, 11, which are located on the Operator side BS of the machine 1 is located.
• a closed bag bottom is formed with valve on the hose piece 13 - at its end 15.
• the semi-finished bag is transferred to a second transport device 31, which is located on the drive side AS of the machine 1.
• the processing stations 8 ', 10', 11 ' the other end 15' of the tube piece 13 or the half-finished bag is formed into a finished bag bottom.
• This embodiment enables the production of very small bag formats.
• FIG. 8 shows a further embodiment according to the invention of a device 1 for producing sacks.
• This zipper-shaped arrangement of the processing stations 8, 8 ', 10, 10', 11, 11 ' is only interrupted by the valve station 9, which is arranged between the bottom opening and feeding station 10 on the operator side BS.
• the valve station 9 which is arranged between the bottom opening and feeding station 10 on the operator side BS.
• all processing steps for bag production on the tube piece 13 are performed alternately first on the operator side BS and then on the drive side AS.
• all processing stations are easily accessible for maintenance purposes.

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• Making Paper Articles (AREA)
• Supplying Of Containers To The Packaging Station (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40600534

Family Applications (1)

Country Status (8)

Cited By (3)

Families Citing this family (24)

Citations (2)

Family Cites Families (24)

• 2008
  • 2008-04-03 DE DE102008017446A patent/DE102008017446A1/de not_active Withdrawn
• 2009
  • 2009-02-10 AT AT0006809U patent/AT10628U3/de not_active IP Right Cessation
  • 2009-03-30 CN CN200980112487.XA patent/CN101983125B/zh active Active
  • 2009-03-30 US US12/736,395 patent/US8597167B2/en not_active Expired - Fee Related
  • 2009-03-30 WO PCT/EP2009/053740 patent/WO2009121836A1/de not_active Ceased
  • 2009-03-30 JP JP2011502362A patent/JP5671447B2/ja active Active
  • 2009-03-30 BR BRPI0910899A patent/BRPI0910899B1/pt active IP Right Grant
  • 2009-03-30 EP EP09727151.4A patent/EP2276628B1/de active Active

Patent Citations (2)

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