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
  • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
  • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
  • B65B9/12—Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents

Definitions

• the invention relates to a method and a device for shaping a viscous mass within a flexible envelope.
• the mass to be molded is first introduced into a flexible covering.
• the mass is then to be brought into an essentially disc-like, plate-like shape, this being done by displacing the mass at certain points in the casing, so that the top and bottom of the casing have direct contact with one another.
• the wrapping is then usually fixed at these portioning points so that the mass can no longer deform back into its original, continuous shape.
• REPLACEMENT BLA ⁇ (RULE 26)
• the mass can either still be deformed in a relatively warm state, and because of the elevated temperature it has a relatively good flowability and correspondingly low toughness. The deformation can thus be carried out relatively easily.
• the problem here is that the fixation must take place relatively quickly, since the mass flows back to the portioning points due to external influences, for example due to the influence of gravity.
• Another problem is that the mass as a whole has not yet hardened and therefore usually changes in shape when it cools down. This leads to optically unsightly formations, since generally no continuous material thickness is achieved, which also leads to problems during transport and packaging.
• a second possibility is to deform the mass in a relatively cold state, which e.g. is described in DE 42 04 396.
• the toughness of the material is correspondingly greater, so that larger forces have to be applied to deform.
• relatively high restoring forces develop in the material. The consequence of this is that the mass flows back into the portioning points if the covering is not fixed immediately after displacement.
• REPLACEMENT BLA ⁇ (RULE 26) Fixation and thus lead to a spread of the mass out of the intended shape.
• a feed system is used in both methods, in which the mass together with its coating is conveyed in a feed direction by a corresponding portioning and fixing device.
• the object of the present invention is to achieve a reliable deformation in a cold-forming process. In this way, a better and more reliable shaping as well as a higher portioning speed can be achieved.
• a cold forming process in the sense of the invention is to be understood as a shaping process in which the mass to be shaped has a relatively high toughness due to its low temperature. This temperature for cheese is approx. 10 - 14 ° C.
• ERSATZBLAH (RULE 26) tion points, the material properties and the thickness of the mass to be deformed and their coating.
• the forces act in such a way that the mass is deliberately displaced away from the portioning point within its envelope. This is preferably done in the opposite direction to the general feed direction.
• this force is that the mass is not only removed from the portioning points provided, but is also removed from the immediate edge area of the portioning point.
• there are also restoring forces within the deformed mass which however occur further away from the portioning point. For this reason, the mass does not flow back into the portioning point.
• the forces which are exerted by the restoring forces of the mass on fixing the casing at the portioning point become lower, since the force introduction point is relatively far away from the portioning point.
• the movement against the direction of advance of the mass is considered to be favorable insofar as the mass to be shaped is already advanced by the advance in the direction of
• Portioning point is pressed. If the displacement now took place in the same direction as the feed, these two movements would overlap so that too much material would be collected at the portioning point.
• REPLACEMENT BLA ⁇ (RULE 26) It is of course possible to allow these external forces to act not only once, but several times, at several points in succession, on the mass and its coating.
• the production speed can be increased overall by distributing it over several force application points and deliberately displacing the mass in the opposite direction to the feed direction.
• the covering is usually fixed by a sealing process which is achieved by means of a relatively high temperature.
• the intended sealing rollers can no longer remain at the portioning points in a first sealing process.
• a relatively high temperature cannot be brought up, since otherwise the covering would melt or burn on its outer surface, while the inner surface is still relatively cold.
• the device according to the invention has two shaping elements, between which the mass is guided with its flexible covering.
• the shaping elements are loaded with periodically changing forces.
• REPLACEMENT BLA ⁇ (RULE 26) Two profiled, circumferential belts are preferably used here, with plates, rollers or similar suitable instruments naturally also being considered instead of the belts.
• the belts are loaded in a suitable area, which is preferably in the middle between the guide rollers of the belts.
• the application can be done either by rollers, rollers, plungers, hydraulic elements or the like.
• the belts or the shaping elements are loaded in such a way that the mass is not only simply displaced out of the portioning point, but at the same time is pushed back against the direction of advance.
• rollers or rollers as the force-applying elements, this is achieved either by eccentrically mounting these rollers or rollers, although of course, alternatively or additionally, a non-circular roller or roller can be used.
• Appropriate control is provided for tappets or hydraulic actuating elements.
• the force is introduced in such a way that the shaping elements initially experience a relatively small force, which acts at least partially counter to the direction of advance and is directed onto the mass to be molded.
• the mass to be molded is displaced away from the portioning point at the beginning of the displacement process.
• ERSATZBLAH (RULE 26) As the displacement process continues, an increasing proportion of the acting forces is introduced perpendicular to the feed direction. Thus, at the same time, the mass is squeezed out of the area of the portioning points and displaced against the feed direction.
• the absolute amount of the acting forces can remain the same or change, in particular increase.
• a suitable mass with suitable material properties it is of course also possible, in the case of a suitable mass with suitable material properties, to carry out the entire required deformation in only one step.
• the shaping elements preferably consist of circumferential belts.
• the following description is based only on this exemplary embodiment, although, of course, any other suitable embodiment for the shaping elements is encompassed by the concept of the invention.
• the two belts used are provided on their sides facing the mass with webs at certain intervals.
• the distances between these webs and their height correspond to the dimensions of the deliverable Product.
• the webs themselves are now not protruding vertically from the belt surface without a transition, but have side bevels. There is therefore no sudden displacement of the mass from the portioning points, but rather the mass can remain tapering in the direction of the portioning points. This special shape also reduces the total restoring forces that occur.
• the belts On the inside, the belts have knobs or a similar suitable guide device for driving and conveying.
• the webs be made heatable.
• the webs themselves either metal, optionally provided with a suitable coating or embedded metal rods in 'the belt material.
• a suitable heating device for example an induction element. In this way, the webs are heated, so that not only is the mass displaced in the portioning area, but at the same time the covering is heated to a certain extent.
• Fixing unit it is no longer necessary to bring the casing completely from a relatively low temperature to the fixing temperature, but the casing already has an elevated temperature. As a result, reliable fixation can be achieved with relatively little effort. Of course, another fixation of the casing is also possible, so that this heating device is not necessarily part of the invention.
• Figure l a plan view of a schematic representation a displacement device according to the invention
• FIG. 2, 3 a side view of the rollers used for displacement
• Figure 4 is an enlarged view of the displacement element used.
• two belts 1, 2 are provided as displacement elements, each rotating in the direction of the arrows 12, 13 and being guided by rollers 3, 4. This is done by means of teeth 5 which are attached to the inside of the belt 1, 2.
• the rollers 3, 4 are designed accordingly for receiving the teeth 5 and for driving the belts 1, 2.
• the straps 1, 2 are provided with a plurality of webs 6, one or more rods 16 being fitted in each web 6.
• the belts 1, 2 are synchronized so that the webs 6 of the two belts are opposite each other, as shown in FIG. 1.
• the entire system is preferably designed so that the mass to be molded is transported vertically downwards in the feed direction 7.
• a differently directed installation is also possible, e.g. horizontal or oblique, with an upward movement against gravity can also be provided.
• roller pairs 8, 8 a, 9, 9, 10, 10 a are provided in the region between the rollers 3, 4, and are also provided with teeth 17 on their circumference (FIGS. 2, 3).
• the material to be molded and portioned is now introduced together with its covering from above in the direction of arrow 7 into the funnel between the belts 1, 2. It is transported further by the belt in the direction of arrow 7 until it reaches approximately the area of the first pair of rollers 8, 8a.
• All pairs of rollers 8,8a, 9,9a, 10,10a are coupled to the belts 1, 2 in a rotationally synchronous manner by means of their teeth 17 (FIG. 2, 3).
• the force that is exerted on the belts by the pairs of rollers can be metered in such a way that a certain force is always exerted when the webs 6 are at a certain, predetermined point.
• roller pairs 8,8a, 9,9a, 10,10a now have a * force effect in the direction of the arrows 14, 15 and in the opposite direction to the conveying direction 7. This is done by the rollers of the roller pairs 8,8a, 9,9a, 10, 10a according to FIGS. 2, 3 are provided with inserts 18 which are attached between the associated teeth 17. These inserts can be clamped, welded or attached in some other suitable way.
• the height of the inserts 18 is now selected so that either the webs 6 are already completely compressed in the area of the roller pairs, or, as in the first pair of rollers 8, 8a (FIG. 2), there is still some clearance between the webs 6 of the belts 1, 2 remains.
• the force effect in the direction of the arrows 14, 15 in FIG. 1 clearly results from the fact that the inserts 18 distance between the rollers of a pair of rollers 8,8a, 9,9a, 10,10a is reduced and thus the belts located between them are squeezed together with the cheese mass and the packaging.
• the backward-moving effect in the opposite direction of the arrow 7 results from the fact that as soon as the inserts 18 come into engagement with the belts 1, 2, this engagement still takes place in FIG.
• roller pairs 9,9a, 10,10a with more inserts 18 being provided here than with the first roller pair 8,8a.
• a preliminary deformation can be brought about with the first pair of rollers 8, 8a, the opposing webs 6 of the belts 1 not yet necessarily colliding with one another, but a certain amount of cheese residue remaining at these portioning points.
• the final Displacement then takes place by means of the roller pairs 9.9a, 10.10a.
• roller pairs 8, 8a, 9.9a, 10, 10a are arranged to be adjustable in the arrow directions 14, 15 and in the arrow direction 7 and in the opposite direction. In addition, an easy replacement of these roller pairs is provided.
• the belts 1, 2 can be easily replaced with the rollers 3, 4 in order to make the system overall even more adaptable.
• Figure 4 shows an enlarged view through the cross section of a belt 1 or 2.
• the rods 16 can be clearly seen, which are arranged in the region of the web 6 and extend transversely to the longitudinal direction of the belt 1, 2.
• each belt 1, 2 consists of an upper material 19 and a lower material 20, which is provided with teeth 5 and corresponding recesses.
• the web 6 is here also, as a difference from the prior art, not projecting perpendicularly from the surface 23 of the belt 1, 2, but initially has a shoulder 21, which is adjoined by an inclined surface 22, which in turn fits into the surface 23, which runs essentially parallel to the belt longitudinal axis.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Belt Conveyors (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Soil Working Implements (AREA)
• Treatment Of Fiber Materials (AREA)
• Brushes (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7751589

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (28)

• 1995
  • 1995-01-17 DE DE19501106A patent/DE19501106A1/de not_active Withdrawn
• 1996
  • 1996-01-06 US US08/700,403 patent/US5901529A/en not_active Expired - Lifetime
  • 1996-01-06 EP EP96900909A patent/EP0804364B1/fr not_active Expired - Lifetime
  • 1996-01-06 ES ES96900909T patent/ES2132877T3/es not_active Expired - Lifetime
  • 1996-01-06 AT AT96900909T patent/ATE177697T1/de not_active IP Right Cessation
  • 1996-01-06 WO PCT/EP1996/000036 patent/WO1996022224A1/fr active IP Right Grant
  • 1996-01-06 JP JP8521998A patent/JPH11501594A/ja not_active Ceased
  • 1996-01-06 DE DE59601454T patent/DE59601454D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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