EP0565841A1 - Dispositif pour ouvrir des sacs ou des moyens d'emballage flexibles similaires - Google Patents

Dispositif pour ouvrir des sacs ou des moyens d'emballage flexibles similaires Download PDF

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Publication number
EP0565841A1
EP0565841A1 EP93103188A EP93103188A EP0565841A1 EP 0565841 A1 EP0565841 A1 EP 0565841A1 EP 93103188 A EP93103188 A EP 93103188A EP 93103188 A EP93103188 A EP 93103188A EP 0565841 A1 EP0565841 A1 EP 0565841A1
Authority
EP
European Patent Office
Prior art keywords
striking
tool
central body
conveying path
bags
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93103188A
Other languages
German (de)
English (en)
Inventor
Manfred Westerfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paal's Packpressen-Fabrik & Co KG GmbH
Original Assignee
Paal's Packpressen-Fabrik & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paal's Packpressen-Fabrik & Co KG GmbH filed Critical Paal's Packpressen-Fabrik & Co KG GmbH
Publication of EP0565841A1 publication Critical patent/EP0565841A1/fr
Withdrawn legal-status Critical Current

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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
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0008—Opening and emptying bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers

Definitions

  • the invention relates to a device for opening sacks, bags and the like flexible packaging according to the preamble of claim 1.
  • Devices of this type are required, for example, in sorting systems for waste in which the waste is unsorted or - roughly according to the "dual system" can be pre-sorted attached. Sacks made of plastic or other flexible material are often used, particularly in the area of previously separated waste. The difficulty is to open these sacks and bags, whereby the sacks and bags have to be opened mechanically in terms of labor and costs.
  • the object of the invention is accordingly to provide a device in which packaged goods which are not or difficult to cut in flexible packaging materials can be removed mechanically with great reliability, even if other packaging materials are also contained as partial containers in a packaging material.
  • the device should have a high level of robustness and service life required for use in waste sorting systems.
  • this object is achieved by a device according to the preamble of claim 1, starting with the characterizing features of claim 1.
  • a rotating, robust striking tool can surprisingly also tear packaging materials made of non-smashable materials such as thin, tough plastic films if they are used as packaging materials and are loaded with packaged goods.
  • This type of tearing effect which is atypical for the packaging material, has proven to be a surprising and happy solution to the problem of opening bags or pouches quickly and effectively, and in doing so also tearing them open completely, which in turn are contained in a larger packaging material of a similar type .
  • a striking arm that can be used alone or in groups can be designed to be robust, so that it does not have to meet the requirements for the sharpness of knife-like or scissor-like opening means. The tool can thus be made stable.
  • the central body is sufficiently large to be provided with a predetermined minimum size and also to have a smooth surface. If several striking arms are used, their distance on the circumference of the central body is increased at the same time. It is also expedient if each of the striking arms is provided with a fleeing leading edge and a width which decreases towards the outside, so that the tool can protect against any inclinations of the packaging material and the packaged goods for adhering or catching.
  • the striking tool can be designed in a simple modification starting from a conventional "vortex", as is known as a stirrer and distributor insert in feed chutes of channel balers for paper and the like. This makes it possible to build to a considerable extent on models and trials of the previously known device.
  • a device designated in the drawing as a whole for opening sacks, bags and the like flexible packaging means comprises a drop shaft 2 open at the top and bottom with shaft walls 3, 4, 5 and 6 and a high-speed impact tool, designated as 7 overall, which is arranged within the chute 2 at a distance from the shaft walls 3, 4, 5 and 6.
  • the top of the chute borders on a filler hood 8, which in turn receives the end of a belt conveyor 9.
  • the chute 2 is connected to a chute 10, via which a further belt conveyor 11 is fed.
  • the entire facility is intended for the beginning of a waste sorting facility, which previously also includes a loading station for trucks with a tipper function and can subsequently flow into a sorting belt or several branched sorting belts, at which a number of sorting stations are arranged according to the separation criteria - without this being the case here individual would have to be presented in more detail.
  • a sack or bag which can consist of plastic film or textile material and is usually designed so that it itself has little material, such as is formed from a thin, solid plastic film, but also considerable tearing forces of hard or pointed material.
  • Such packaging is generally difficult to open. This is particularly true if it in turn has difficult ingredients that tend to avoid any tool intervention, such as hard plastic foam, or, like metal or ceramic, resist some tool intervention.
  • the impact tool 7 shown has proven to be suitable in this regard. It consists of a central body 12 of large diameter with an upper, falling packaging towards the outside via conical surfaces deflecting nose 13 and three cylindrical sections 14, 15 and 16, which are provided with gradually reduced outside diameters downwards, in order not to offer any falling edge to support material.
  • the division into sections is determined only in that the central section 15 is fixed and is firmly connected to a hollow arm 17 which leads through the shaft wall 5 to the outside and contains drive means (V-belts) for connection to an electric drive arranged outside the shaft.
  • the hollow arm 17 is thus the support arm and drive train for the striking tool 7, the other parts of which rotate in a rigid connection with one another.
  • the striking arms 21 to 24 have the shape of fins with horizontally oriented fin surfaces.
  • the radial extension or length of the fins is not or at least not significantly larger than the tangential extension or width of the fins.
  • the length of the fins is furthermore small compared to the diameter of the central body 7.
  • the (correspondingly designed) fins have striking edges 25 fleeing on the front side and finally the fins have a width that decreases towards the outside.
  • the large smooth central body ensures that the striking arms are at a large distance from one have central vertical central axis 26 and revolve at a predetermined speed with high peripheral speed and corresponding energy.
  • This body shape also ensures large distances between the striking arms 21 to 24, so that torn packaging can not easily attach to two striking arms. It is even more important, with the appropriate diameter, to avoid wrapping around the central body with torn packaging, as is easily possible with waves or relatively thin central bodies.
  • the nose 13 also not only has a deflecting function for falling material, but also an increase in the spacing between the striking arms.
  • the centrifugal centrifugal effect is supported by the fact that the striking edges 25 are designed to be fleeing, i.e. are pulled in the radial direction when the striking tool rotates in the direction of a rotating arrow 27 (FIG. 2) and thus point obliquely outwards.
  • the distances between the striking arms could be increased simply by reducing the number of striking arms to 3.2 or even one for a given extent. This can be advantageous if the risk of wrapping proves to be great for tough packaging.
  • the number of striking arms depends on the circumference of the speed of the striking tool and the desired frequency of action of the striking arms to coordinate descending sacks or bags. At higher speeds, the number of striking arms on the circumference can then be reduced and vice versa.
  • the number of tool actions can also be achieved by a multi-stage impact tool, as can be seen here in the form of a second stage with the striking arms 28 and 29 and 30 protruding on the underside of the cylindrical section 16.
  • the arrangement of the striking arms corresponds entirely to that of the striking arms 21 to 24, so there are a total of four striking arms distributed uniformly on the circumference of the section 16.
  • the second tool stage with the striking arms 28 to 30 is therefore able to process material falling from above in addition to the striking arms 21 to 24.
  • the impact of the impact arms on packaging and packaged goods is only partial and not even essentially essential. Tearing open and cutting open the packaging is regularly necessary, but it is very important that the sacks and bags filled with packaged goods are thrown against firm resistance.
  • the shaft walls 3 to 6 serve in particular for this purpose. Filled sacks or pouches tend to tear open and burst open in the event of an impact, in particular if they have already been injured by the impact arm intervention, and thus release the contents. This is also desirable.
  • baffle surfaces are provided here as fixed baffle blocks 31, 33, 34, which are arranged on the shaft walls and lie at an intermediate height between the tool stages, for example at the level of the hollow shaft 17.
  • the hollow shaft 17 also has the function of a buffer block for spinning packaging and spinning packaged goods and can also be replaced by a block if necessary, for example if the energy supply and holder for the striking tool are not from the side as an alternative to the present exemplary embodiment, but from below or above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP93103188A 1992-04-16 1993-02-27 Dispositif pour ouvrir des sacs ou des moyens d'emballage flexibles similaires Withdrawn EP0565841A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212761 1992-04-16
DE19924212761 DE4212761A1 (de) 1992-04-16 1992-04-16 Einrichtung zum Öffnen von Säcken, Beuteln oder dergleichen flexiblen Packmitteln

Publications (1)

Publication Number Publication Date
EP0565841A1 true EP0565841A1 (fr) 1993-10-20

Family

ID=6456962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103188A Withdrawn EP0565841A1 (fr) 1992-04-16 1993-02-27 Dispositif pour ouvrir des sacs ou des moyens d'emballage flexibles similaires

Country Status (2)

Country Link
EP (1) EP0565841A1 (fr)
DE (1) DE4212761A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104093634A (zh) * 2011-11-14 2014-10-08 弗洛克技术股份公司 用于无污染地排空至少部分柔性的容器的排空方法和排空装置
GB2512405B (en) * 2013-03-28 2018-05-30 D C Norris & Company Ltd Bag emptying system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400228C2 (de) * 1994-01-05 1996-10-17 Thyssen Industrie Vorrichtung zum Öffnen und Entleeren von Behältnissen
DE19750093C1 (de) * 1997-11-12 1999-02-18 Johannes Loebbert Verfahren und Vorrichtung zum Aufreißen und Entleeren von Säcken aus Papier oder Kunststoffolie

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818985A (en) * 1951-01-06 1958-01-07 Nat Tea Packing Company Inc Apparatus for reclaiming contents of filled envelope packages
DE1145547B (de) * 1961-01-17 1963-03-14 Hazemag Hartzerkleinerung Verfahren und Vorrichtung zum Entleeren von Behaeltnissen aus Papier oder aehnlichem Stoff, vorzugsweise von Papiersaecken
GB970453A (en) * 1962-12-28 1964-09-23 George Garnham Turner Comminution apparatus particularly for meat and like material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818985A (en) * 1951-01-06 1958-01-07 Nat Tea Packing Company Inc Apparatus for reclaiming contents of filled envelope packages
DE1145547B (de) * 1961-01-17 1963-03-14 Hazemag Hartzerkleinerung Verfahren und Vorrichtung zum Entleeren von Behaeltnissen aus Papier oder aehnlichem Stoff, vorzugsweise von Papiersaecken
GB970453A (en) * 1962-12-28 1964-09-23 George Garnham Turner Comminution apparatus particularly for meat and like material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104093634A (zh) * 2011-11-14 2014-10-08 弗洛克技术股份公司 用于无污染地排空至少部分柔性的容器的排空方法和排空装置
CN104093634B (zh) * 2011-11-14 2016-04-20 弗洛克技术股份公司 用于无污染地排空至少部分柔性的容器的排空方法和排空装置
GB2512405B (en) * 2013-03-28 2018-05-30 D C Norris & Company Ltd Bag emptying system

Also Published As

Publication number Publication date
DE4212761A1 (de) 1993-10-21

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