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
  • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
  • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
  • B65B3/30—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement
  • B65B3/32—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement by pistons co-operating with measuring chambers

Definitions

• the invention relates to a metering device for flowable products, in particular dairy products, according to the preamble of claim 1.
• the invention is concerned with the problem of creating a metering device for flowable products which can be produced with a smaller technical complexity and with a slimmer construction size and thereby enables an increase in performance during the filling process by means of short adjustment paths in the control of its movable components.
• the invention solves this problem with a metering device with the features of claim 1.
• a metering device with the features of claim 1.
• claims 2 to 16 The metering device according to the invention, with a module integrating the valve cylinder and the valve piston into a pivotable control unit, enables a substantial reduction in the outside diameter of the metering device, so that several of these slim devices enable an advantageously compact installation position in a narrow working space.
• row arrangements of such devices are provided in form, fill and seal machines, so that such a machine can also be used for filling small, small spacing cups in packaging units suitable for palletizing.
• the control unit integrated in the dosing device forms a subassembly with the respective control openings in the valve cylinder and piston part thereof, in which the conveying movements usually achieved with piston dosing by several axially movable piston parts are partially replaced by a technically simpler and faster executing swiveling or rotating movement.
• This control movement can be initiated via a simply constructed swivel drive, so that the optimally distributable product flow can only be controlled by means of a metering piston and its corresponding lifting movement when it is sucked in or out.
• the control unit which can be of variable length in particular, can be reduced with little effort in the area of its inner diameter in such a way that the surrounding outer metering space can be adapted to different metering volumes. Reliable filling of the metering chamber is also possible in the control unit over comparatively small flow cross sections. Due to the pivoting movement in the area of the control unit, the metering device has short operating times, so that the slim one Device can be operated overall with high performance and short cycle times.
• FIG. 1 is a partially sectioned side view of the respective metering devices provided in a filling unit in principle representations of different operating phases
• Fig. 2 is a sectional view of the metering device in the area
• FIG. 3 u. 4 respective sectional views similar to FIG. 2 with the valve cylinder of the control unit in different pivot positions
• Fig. 5 is a sectional view of the metering device in the area of
• Valve piston according to a line V-V in Fig. 1,
• Fig. 6 u. Fig. 7 respective pivot positions of the control unit in the area of its control piston.
• a filling device for dairy products designated as a whole by 1, which comprises a product pre-closed by wall parts 2. council container 3.
• a row of metering devices 4 is connected to this container 3, which in the following are only distinguished by the designations 4.1, 4.2 and 4.3 according to their differently illustrated operating positions, but have identical assemblies in terms of their construction.
• These metering devices 4, which operate on the principle of piston metering devices, are provided for filling the respective cups 5, the filling device 1 as a whole also being able to be provided as part of a molding, filling and sealing machine (not shown in more detail).
• the metering device 4 known in principle from EP 0 286 785 A2 is provided with a metering cylinder 6, a valve cylinder 7 arranged coaxially therein and an annular metering piston 8.
• the metering piston 8 is axially displaceable within an annular space 9 running between the metering cylinder 6 and the valve cylinder 7 so that the metering piston 8 can be shifted into an upper suction position or a lower discharge position according to the timing control of the filling device 1 (arrows D and D ').
• the metering piston 8 divides the annular space 9 into an upper part connected to the product storage container 3 in a passage area 10 and into a lower part forming a dosing space 11 for the product (arrow P).
• the dosing chamber 11 in the dosing cylinder 6 is closed on the underside except for a coaxial, cylindrical discharge opening 12 by a mouthpiece 13.
• a central valve piston 15 is provided, which is axially displaceable between a position engaging in the discharge opening of the mouthpiece 13 (metering device 4.2) into an upper release position (metering device
• the same components of the metering devices 4.1, 4.2 and 4.3 are not always referred to several times.
• valve piston 15 which is structurally combined with the valve cylinder 7 forms a module which is provided as a pivotable control unit and with which different operating positions can be achieved by respective pivoting positions (arrow S) about the vertical vertical axis M, so that only one stroke movement in the area of the metering piston 8 (arrow D, D ') for conveying the product P is necessary.
• the control unit acts in such a way that in a first swivel position (metering device 4.2) the metering chamber 11 is connected to an inlet channel 14 in the valve cylinder 7 and in a second swivel position (metering device 4.1) the metering chamber 11 is connected to an outlet channel denoted overall by 16, through which the product P is conveyed into the respective cup 5.
• valve piston 15 which is provided as an integral part of the one-piece control unit, forms the lower end of the valve cylinder, designated overall by 7.
• the valve piston 15 is also provided as the lower end of the inlet channel 14.
• a transition opening, generally designated 17, is provided in the valve cylinder 7 immediately above the inner upper side of the valve piston 15 .
• This transition channel 18 is at its upper end directly with the do- sierraum 11 in connection and in the region of its lower end, the metering chamber 11 in the first pivoting position of the control unit (metering device 4.2) can be closed. In the second swivel position, this transition channel 18 is connected to the outlet channel 16 in the valve piston 15 (metering device 4.1).
• control unit in the area of the valve cylinder 7 or the valve piston 15 can be provided with several of the openings or channels described above, so that a large amount of product P is supplied to the metering device 4 in a short time or can be conveyed into the cup 5.
• control unit has two longitudinal grooves 21, 22 which open out from the underside of the annular metering space 11 and are arranged in a support plate 19 of the device 1 as respective transition channels 18 and which radially extend from an engagement opening 20 which receives the valve piston 15 in its control position are formed (Fig. 2).
• the sectional view according to FIG. 2 also shows that the control unit in the area of the valve cylinder 7 has two transition openings 17 opposite each other by 180 ° in the form of a respective wall slot 24 and 25. These two wall slots 24 and 25 are in the area of the valve piston
• the inlet duct 14 is formed as a central bore running in the valve cylinder 7 of the control unit, which has respective wall openings 29 as a connection opening to the reservoir 3 at its upper end region facing the product reservoir 3 near the passage region 10, so that the product P 1 can be sucked in unhindered.
• the outlet channel 16 interacts with a bottom opening 30 provided in the mouthpiece 13, the passage cross section B of which extends only over a partial area of the end face of the valve piston 15 or the diameter of the discharge opening 12 (diameter B 1 ).
• the outlet channel 16 has in the region of its transverse openings 27 and 28 a longitudinal channel 31 connected to them and running at a parallel distance from the central longitudinal axis M of the valve piston 15, which in the second pivoting position of the control unit (metering device 4.1) with the bottom opening 30 in the mouthpiece 13 into one Can be shifted one on top of the other (Fig. 5). It is also conceivable that the outlet channel 16 has one or more longitudinal channel part (s) opening directly into the respective transition channel 18 instead of the two transverse openings 27 and 28 (not shown).
• the bottom opening 30 of the mouthpiece 13 cooperating with the longitudinal channel 31 is arranged parallel and at a distance from the central longitudinal axis M of the valve piston 15 (distance F, metering device 4.2).
• the metering chamber 11 is provided with a radial shape extension 32 in the vicinity of the lower transition channel 18 or the two longitudinal grooves 21, 22, which is required in particular when the filling device 1 is to be cleaned as a whole (metering device 4.3).
• the control unit In this operating position, the control unit is axially displaceable from its engagement position in the mouthpiece 13 into an upper service position (arrow E, metering device 4.3) and the metering piston 8 can be moved down from its functional position in the metering cylinder 6 into the area of the shape extension 32 ( Arrow R) so that the dosing piston 8 is released for cleaning both the area of the annular space 9 and the dosing space 11.
• the metering device with its valve position according to 4.1 shows an end phase when the cup 5 is filled, the product P being passed through from the metering chamber 11 the transverse openings 26 and 27 are conveyed into the longitudinal channel 31 and from there through the bottom opening 30 into the cup 5.
• 5 shows the position assumed by the control unit in the region of the valve piston 15, in which the outlet channel (16) is positioned in the region of its transverse opening 28 in a 3 o'clock position, that from the two as transition channels effective longitudinal grooves 21 and 22, the product P is pressed into the longitudinal channel 31 and from this through the bottom opening 30 into the cup 5.
• the control unit After completion of this filling process, after the dosing piston 8 has reached its lower position in the direction of movement D, the control unit is given away in a pivoting direction S about the central longitudinal axis M.
• the channels in the area of the valve piston 15 are shifted via an intermediate position according to FIG. 6 so that the longitudinal channel 31 reaches a 1 o'clock position and thus a base plate 33 closes the passage for the longitudinal channel 31 in the area of the mouthpiece 13 as a whole.
• the outlet channel 16 reaches in the area of its two transverse openings 27 and 28 in the curved area 23 'within the support plate 19, so that these channel areas are also closed (FIG. 7).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Basic Packing Technique (AREA)
• Coating Apparatus (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Confectionery (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=27816260

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (8)

Family Cites Families (11)

• 2002
  • 2002-04-18 DE DE20206065U patent/DE20206065U1/de not_active Expired - Lifetime
• 2003
  • 2003-04-16 DE DE50303836T patent/DE50303836D1/de not_active Expired - Lifetime
  • 2003-04-16 EP EP03725042A patent/EP1494921B1/fr not_active Expired - Lifetime
  • 2003-04-16 PL PL372715A patent/PL206202B1/pl unknown
  • 2003-04-16 ES ES03725042T patent/ES2266815T3/es not_active Expired - Lifetime
  • 2003-04-16 US US10/511,152 patent/US7299947B2/en not_active Expired - Lifetime
  • 2003-04-16 WO PCT/EP2003/003961 patent/WO2003086865A1/fr not_active Ceased
  • 2003-04-16 AT AT03725042T patent/ATE329831T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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