• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a method for manufacturing valve sacks from a fabric tube, the flat fabric tube from a tube unwinding device or tube forming device is fed to a cutter in which the fabric tube is cut to obtain individual tubular bag bodies, whereupon the tubular bag bodies in which by wrapping the fabric respectively a valve has been prepared, are closed at both ends, wherein the cutting of the fabric tube in a longitudinal transport section takes place in which the fabric tube or the tubular bag body are transported in the longitudinal direction of the fabric tube, and the closure of the bag body preferably takes place in a transverse transport section the bag body are transported in a direction transverse to its longitudinal direction transport direction. The wrapping of the fabric for the preparation of the valve takes place in the longitudinal transport section.
    公开号:AT512459A1
    申请号:T133/2012
    申请日:2012-01-31
    公开日:2013-08-15
    发明作者:Herwig Dipl Ing Worff
    申请人:Starlinger & Co Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a process for the production of valve sacks from a fabric tube in which the flat fabric tube from a Schlauchabwickelvorrichtung or a hose forming device is supplied to a cutting device in which the fabric tube is cut to obtain individual tubular bag body, whereupon the tubular bag body, in which a valve has been prepared by wrapping the fabric, are closed at both ends, wherein the cutting of the fabric tube in a longitudinal transport section, in which the fabric tube or the tubular bag body are transported in the longitudinal direction of the fabric tube, and the closing of the bag body preferably in a transverse transport section takes place in which the bag bodies are transported in a direction transverse to their longitudinal direction transport direction.
    The invention further relates to a device for carrying out this method.
    The tubular body of a valve bag is usually formed from a tube-like round material or a flat material connected to a tube at the longitudinal edges. A rough classification of such bags is made by the distinction in pillow and box shape. A pillow form of sacks usually arises by assembling the floors with a textile seam or a weld. The present invention is particularly concerned with pillow-shaped bags.
    The fabric consists preferably of monoaxially stretched polymer, in particular polyolefin or polypropylene tapes. These tapes are prepared by stretching polymer, in particular polyolefin or polypropylene films usually four to ten times, whereby the molecular chains are aligned in the tape longitudinal direction and have in these directions about six to ten times the strength of the original film. The ribbon width is usually about 1.5 to 10 mm, the thickness 20 to 80 pm. To achieve dust and moisture proofness, a coating of melt of preferably the same material from which the tapes are made can be applied to the fabric on one or two sides.
    A method and a device of the aforementioned type are known, for example, from WO 2010/086232 A1. As a rule, such a device initially comprises a hose-forming device for producing and providing a tubular material. It may also be present only a Schlauchabwickelvorrichtung. This is usually equipped with a material wrap on which tubular material is wound. From this material wrap the material is usually withdrawn continuously in the longitudinal direction. In the sack manufacturing process of the prior art machines, the fabric hose provided by the hose forming apparatus or by the hose unwinding apparatus is fed to a cross cutter which singulates the fabric hose into individual pieces of tubing. The tubular bag bodies are transferred to a transport device.
    By means of this transport device is usually, but not necessarily, a change in the transport direction of a longitudinal transport, in which the hose or pieces of hose were transported in the direction of their longitudinal axes, in a transverse transport, in which the hose pieces are no longer in the direction of their hose longitudinal axis, but be transported transversely thereto, so that the ends of the hose pieces are laterally accessible for closing the bag ends or for producing the sack bottoms. The original and the new transport direction of the hose or hose piece are usually perpendicular to each other.
    Valve bags are characterized in that in the bottom of the bag, a valve formed from the fabric material is integrated, via which the bag closed on both sides can be filled with filling material. The filling takes place in that a pipe socket-shaped mouthpiece of a bottling plant is introduced into the valve. The valve is spread open, so that the contents can be placed in the valve bag. If the predetermined filling amount is filled in the bag, this is deducted from the pipe socket-shaped mouthpiece of the bottling plant. In this case, the valve should close by the hose wall portions of the valve tube together, which is realized in that the valve tube is compressed by the pressure exerted by the filling material. In conventional systems, the valve is made by wrapping the fabric at a corner of the bag body in the interior of the same and then by flipping the end portion of the bag body. The process of folding the end portion of the bag body closes the respective bag end simultaneously. For this reason, the hammering of the
    Tissue made in conventional systems after cutting just before closing the bag, this being done in the transverse transport section, during the transverse transport or at a stop during the transverse transport.
    The disadvantage here, however, is that the tissue during the transverse transport is difficult to control. In particular, the superposed fabric layers of the flat tube pieces are difficult to space from each other. However, the spacing of the fabric layers is a prerequisite for the material in the sequence can be taken for the realization of the valve. It is known to space the fabric layers of the piece of tubing, for example with the aid of suction cups or the like, but this works only inadequately, especially with uncoated and therefore air-permeable fabric. In addition, the fabric is usually very soft, so that any handling is difficult.
    The present invention aims to avoid the above-mentioned disadvantages. In particular, the invention aims to simplify the manufacture of the bag valve and to shorten the cycle times.
    To solve this problem, the invention provides in a method of the type mentioned above that the wrapping of the fabric takes place in preparation of the valve in the longitudinal transport section. The invention is based on the recognition that the tissue is easier to control during the longitudinal transport than during the transverse transport. In particular, the problems associated with the use of uncoated fabric, e.g. the difficulty of the tissue from the outside with suction cups to ·· «··« ♦ «« «· · * · ft« ** · · «« · * * ·· * < This can be remedied by the fact that the fabric can be easily manipulated from the inside during the longitudinal transport. For example, it is necessary for the wrapping of the fabric that the superimposed layers of fabric of the flat tube are previously spaced from each other. The fabric is impacted, for example, by introducing a suitable tool into the gap between the fabric layers. In a preferred manner, in this case the procedure is such that the superimposed layers of fabric of the flat tube are spaced from each other with the aid of an internal tool to allow the wrapping of the fabric. The term internal means here that the tool is arranged inside the fabric tube. The tool preferably has two spaced-apart guide surfaces on which the fabric layers slide during their longitudinal transport, wherein the distance between the guide surfaces makes the required distance between the fabric layers, which allows the wrapping of the fabric from the side of the hose.
    The wrapping of the fabric can be done either before the cutting of the tubular fabric or after cutting to length, wherein the first variant is preferred because the continuous tubular fabric is easier to handle than the individual tubular bag body obtained by cutting.
    If the wrapping of the fabric takes place before the cutting to length, it is preferred to proceed in such a way that a lateral incision is formed in the fabric tube. This incision • *
    forms a tissue flap that can be wrapped in the interior of the tube.
    A preferred procedure provides that the wrapping of the fabric comprises the folding over of the fabric layers of the hose along a folded edge running at an angle of 40-50 °, in particular 45 °, to a side edge of the hose.
    The weaving of the fabric preferably takes place with the aid of a tool arranged laterally of the hose.
    A particularly efficient procedure provides that prior to cutting the fabric tube in this two substantially opposite lateral incisions are formed, wherein the released by the one incision tissue in the transport direction and the released by the other incision tissue is taken against the transport direction. There are thus two cuts made, on both sides of the fabric tube, wherein the subsequent wrapping of the tissue takes place so that on each side of the hose in each case a valve can arise. The cutting of the fabric tube is then carried out between the impacts so that one impact to a first bag body and the other impact belongs to a subsequent, second bag body. From this opposite arrangement of the impacts or valves results in a material savings.
    The closure of the bag body preferably comprises the folding over of an end section of the flat bag body, whereby a valve is formed from the impact by ♦ · ♦ ·
    • ♦ ·····························································································································
    As already mentioned, the invention preferably finds application in sacks whose webs are made of monoaxially drawn polymer, in particular polyolefin or
    Polypropylene ribbon exists. The fabric can basically be coated or uncoated. In the case of a coating, this may consist of a thin layer of polypropylene or a mixture of polypropylene and polyethylene. The advantages of the invention are particularly evident in uncoated fabric.
    To solve the problem underlying the invention, the invention further proposes a device for the production of valve sacks from a fabric tube, comprising a Schlauchabwickel- or
    A tube forming device, a cutting device to which a flat fabric tube from the Schlauchabwickel- or tube forming device can be fed and can be carried away from the obtained by cutting the fabric tube tubular bag body, and a
    Sackkörperverschließeinrichtung to which the tubular bag body can be fed, wherein at least one transport device is provided which has a longitudinal transport section for transporting the fabric tube or the tubular bag body in the longitudinal direction of the fabric tube and preferably a transverse transport section for transporting the bag body in a direction transverse to the longitudinal direction of transport direction in which the hose unwinding or hose forming device and the cutting device in the longitudinal transport section and the * * * *
    • · · · · & & & & & & & & & & & & & &. »«
    Sackkörperverschließeinrichtung are optionally arranged in the transverse transport section, wherein a fabric wrapping device is also arranged in the longitudinal transport section.
    A preferred embodiment provides that a further cutting device upstream of the fabric wrapping device is provided for producing a lateral cut in the flat fabric tube.
    Furthermore, it is advantageous if the
    Tissue device is associated with an internal tool for spacing the superimposed layers of fabric of the flat tube.
    A particularly efficient and structurally simple wrapping of the tissue succeeds in that, as corresponds to a preferred development, the tissue wrapping device is arranged laterally of the tube and has a displaceable between the tissue layers of the tube or pivotable tool.
    The invention will be explained in more detail with reference to embodiments shown in the drawing. 1 shows a schematic plan view of the device according to the invention, and FIG. 2 shows a sectional view along the line II-II.
    In Fig. 1 it can be seen that a fabric tube 1 of the device in the direction of arrow 2 is supplied. In a longitudinal transport section 3, the fabric tube is transported in the direction of the arrow 2. In the longitudinal transport section 3, a lateral cut 4 is made in step S1 by means of a cutting tool (not shown). During cutting, the longitudinal transport may be interrupted. In step S2, the fabric layers of the fabric tube 1 are spaced by means of an internal tool 5 and the fabric flap formed by the cut 4 is folded by means of a slider 6. It is expedient to be able to carry out the steps S1 and S2 at the same position, that is to say without longitudinal transport of the fabric tube 1 between the steps S1 and S2, since the transport after making the incision 4 is made more difficult.
    In step S3, the fabric tube along the line 7 is cut off, so that a bag body 8 is formed. From this position, the transverse transport is usually carried out in the direction of the arrow 18, wherein the transverse transport section is denoted by 9. In the transverse transport section 9, the ends 10 and 11 of the bag body 8 are turned over in step S4 and the bag body is closed by fastening the folded ends 10 and 11.
    In the sectional view of FIG. 2, the internal tool 5 is better visible. The internal tool 5 comprises two rollers 12, by which the two fabric layers 13 and 14 of the fabric tube 1 are spaced from each other. The inner tool 5 further comprises a subsequent in the transport direction 2 to the rollers 12 plate 15, which has a cross-sectionally U-shaped projection 16 in the region of the incision 4, which has an oblique edge 17 on which the fabric flap formed by the incision 4 is folded with the help of the slider 6.
    权利要求:
    Claims (12)
    [1]
    * · ♦ · ♦ • ♦ »« · * · * • ·· ♦ · »··· φ» «t 4: ίο! Claims 1. A method of manufacturing valve sacks from a fabric tube wherein the flat fabric tube from a tube unwinding device or hose forming device is fed to a cutter in which the fabric tube is cut to obtain individual tubular bag bodies, whereupon the tubular bag bodies in which a valve has been prepared by wrapping the fabric, are closed at both ends, wherein the cutting of the fabric tube in a longitudinal transport section, in which the fabric tube or the tubular bag body are transported in the longitudinal direction of the fabric tube, and the closing of the bag body preferably in a transverse transport section takes place, in which the bag bodies are transported in a direction transverse to their longitudinal direction of transport, characterized in that the wrapping of the fabric for the preparation of Valve is made in the longitudinal transport section.
    [2]
    2. The method according to claim 1, characterized in that before the cutting of the fabric tube in this a lateral incision is formed.
    [3]
    3. The method according to claim 1 or 2, characterized in that the superimposed layers of fabric of the flat tube by means of an internal tool are spaced apart to allow the wrapping of the fabric.
    [4]
    4. The method of claim 1, 2 or 3, characterized in that the wrapping of the fabric comprises the folding of the fabric layers of the hose along an extending at an angle of 40 - 50 °, in particular 45 ° to a side edge of the hose folded edge inside.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the wrapping of the tissue takes place by means of a tool arranged laterally of the hose.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that before the cutting of the fabric tube in this two substantially opposite lateral incisions are formed, wherein the released by the one incision tissue in the transport direction and released by the other incision tissue against the transport direction is taken.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the closing of the bag body comprises the folding of an end portion of the flat bag body.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the fabric consists of monoaxially stretched polymer, in particular polyolefin or polypropylene tapes.
    [9]
    9. Device for producing valve sacks from a fabric tube, in particular for carrying out the method according to one of claims 1 to 8, comprising a hose unwinding or hose forming device, a cutting device, which is a flat fabric hose from the Schlauchabwickel- or hose forming device can be fed and from the through At least one transport device is provided, which has a longitudinal transport section for transporting the fabric hose or the tubular bag body in the longitudinal direction of the fabric tube and preferably a transverse transport section for transporting the bag body has a transport direction running transversely to its longitudinal direction, the hose unwinding or hose-forming device and d The cutting device in the longitudinal transport section and the Sackkörperverschließeinrichtung are optionally arranged in the transverse transport section, characterized in that a fabric wrapping device is arranged in the longitudinal transport section.
    [10]
    10. The device according to claim 9, characterized in that a tissue cutting device upstream further cutting device is provided for producing a lateral cut in the flat fabric tube.
    [11]
    11. The device according to claim 9 or 10, characterized in that the tissue wrapping device is associated with an internal tool for spacing the superimposed layers of fabric of the flat tube.


    [12]
    12. The device according to claim 9, 10 or 11, characterized in that the fabric wrapping device is arranged laterally of the hose and has a displaceable between the fabric layers of the hose or pivotable tool. Vienna, 31 January 2012 Applicant by:

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    同族专利:
    公开号 | 公开日
    AT512459B1|2015-08-15|
    WO2013113564A1|2013-08-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1359770A|1962-04-09|1964-04-30|Windmoller & Holscher Fa|Valve bag of artificial material; method and device for its manufacture|
    GB971290A|1962-04-09|1964-09-30|Max Gennerich|Improvements in and relating to plastics valve bags|
    US3280705A|1963-04-08|1966-10-25|Windmoeller & Hoelscher|Method for manufacturing plastic bags|WO2020058828A1|2018-09-23|2020-03-26|Lohia Corp Limited|A method and an apparatus for manufacturing a storage bag, and a storage bag|US1892237A|1929-12-07|1932-12-27|George S Hoover|Manufacture of valves in paper sacks|
    GB985511A|1960-04-06|1965-03-10|Ici Ltd|Improvements in and relating to a method of manufacturing self-closing bags|
    DE102009000454B4|2009-01-28|2018-10-31|Windmöller & Hölscher Kg|Apparatus and method for making sacks of tubular material|CN110696434B|2019-10-18|2021-09-14|温州大学瓯江学院|Full-automatic production line for valve bags|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA133/2012A|AT512459B1|2012-01-31|2012-01-31|METHOD FOR PRODUCING VALVE LUGS FROM A TISSUE HOSE|ATA133/2012A| AT512459B1|2012-01-31|2012-01-31|METHOD FOR PRODUCING VALVE LUGS FROM A TISSUE HOSE|
    PCT/EP2013/050786| WO2013113564A1|2012-01-31|2013-01-17|Method for producing valve bags from a fabric tube|
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