EP1395490A2 - Dosiervorrichtung in einer tubenfüllmaschine - Google Patents
Dosiervorrichtung in einer tubenfüllmaschineInfo
- Publication number
- EP1395490A2 EP1395490A2 EP02754646A EP02754646A EP1395490A2 EP 1395490 A2 EP1395490 A2 EP 1395490A2 EP 02754646 A EP02754646 A EP 02754646A EP 02754646 A EP02754646 A EP 02754646A EP 1395490 A2 EP1395490 A2 EP 1395490A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering
- piston
- control sleeve
- dosing
- chamber
- 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.)
- Granted
Links
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 in a tube filling machine, with a metering chamber formed in a housing, which has an inlet opening and an outlet opening for a medium to be metered, at least one adjustable metering piston, by means of which the volume of the metering chamber can be changed, and one rotatably mounted in the housing Control sleeve which has at least one connecting channel which connects the inlet opening or the outlet opening to the metering chamber in a predetermined rotational position of the control sleeve, the control sleeve having a conical section which can be sealingly applied to and detached from a complementary conical section of the housing.
- a tube filling machine is used to fill tubes with a predetermined, metered amount of a product or filling medium and usually has a conveyor device designed as an endless belt or chain, which carries a large number of receptacles for one tube each.
- the empty tubes are inserted into the receptacles of the conveyor device in a loading station and then pass through several rere workstations, which are in particular a filling station and a downstream sealing station.
- the tubes are filled via a filling pipe, which is connected to a filling medium reservoir via a dosing device.
- the filled tube is then transported on to the closing station, in which the upper end of the tube is closed.
- a metering device of known construction (DE 36 36 804 CI) has a housing which is connected to the filling medium reservoir via an inlet opening and to the filling pipe via an outlet opening.
- a control sleeve is rotatably mounted in the housing, in the interior of which a metering chamber is formed which has an access opening which, depending on the rotational position of the control sleeve, is optionally connected to the inlet or outlet opening.
- a metering piston is displaceably mounted within the control sleeve, which draw a predetermined amount of the filling medium through the inlet opening into the metering chamber when the outlet opening is closed, and then when the outlet opening is closed
- the control sleeve is sealed with respect to the housing by means of ring seals and moreover has a conical section which bears against a complementary conical section of the housing.
- the control sleeve is closed at one axial end and connected to an adjusting device by means of which it can be axially adjusted so that the two conical sections come to rest.
- DE 36 36 801 CI provides for the control sleeve to be axially closed by means of the adjusting device adjust that the housing, the control sleeve and the dosing piston are brought from the normal working position into a cleaning position, in which they come free from each other and the seals coming into contact with the filling medium to be dosed are exposed
- the components and the seals can then be cleaned of residues of the previously filled filling medium.
- the installation space required for the adjustment device is very large and it has also been shown that the seals are subject to high wear and tear due to the cleaning process and therefore have to be replaced frequently, which in turn is time-consuming and expensive.
- the invention has for its object to provide a metering device of the type mentioned, which has a compact structure and enables a product change in a simple manner.
- Control sleeve to be axially displaced by a small amount, whereby a gap is formed between the conical sections, which can be rinsed out with a cleaning liquid.
- the control sleeve is then moved again in the opposite direction, so that the two conical sections of the control sleeve and the housing come into sealing contact again.
- special elastic plastic seals can be dispensed with, which means that there is no longer any risk of excessive wear and the need to change the seal.
- control sleeve has an axially through-bore in which the at least one metering piston is displaceably guided.
- the metering piston is accommodated with a piston section in the axial through-hole with a tight fit and thus sealed, so that no special plastic seals are necessary here either.
- the metering chamber is formed at least in sections on the side facing the wider end of the conical section of the control sleeve.
- housing and / or the control sleeve and / or the metering pistons consist of a ceramic material.
- a first metering piston is designed as an annular piston guided in the axial through bore of the control sleeve, which in turn has an axial bore in which a second metering piston is guided in a displaceable manner.
- This configuration has the essential advantage that the amount of the filling medium conveyed to the tube via the outlet opening of the metering chamber can be changed in a simple manner without changing the metering piston. If the two coaxial dosing pistons are moved as a unit, a relatively large amount of filling medium is delivered. However, if the outer first metering piston, which is ring-shaped in cross section, stops and only the inner second metering piston is adjusted, a substantially smaller amount of filling medium is delivered.
- each metering piston is preferably assigned its own drive, in particular in the form of a servo motor.
- a flushing chamber of enlarged diameter is formed in the axial through bore of the control sleeve, in which a piston section of the first metering piston can be received with play, and that a flushing liquid can be supplied to the flushing chamber via at least one feed opening.
- the annular first metering piston is moved so far within the axial through bore of the control sleeve that its piston section lies freely in the washing chamber.
- the inner second metering piston remains stationary and, due to the displacement of the first metering piston, protrudes freely therefrom, so that the inner second metering piston can also be cleaned when a rinsing liquid is introduced.
- the two conical sections disengage and an intermediate space is formed between the housing and the control sleeve, which can be flushed with a rinsing liquid for cleaning the metering device.
- the rinsing liquid is preferably introduced into a separate feed opening which is formed in the foot region of the conical section of the housing.
- a En ⁇ de protrudes the control sleeve into the metering chamber into and the communication passage, a connection between the metering chamber and the inlet opening or the outlet opening can be produced by means of which then can be switched on in a constructively acher form of an axial groove opening on the face.
- a connecting channel or an axial groove is sufficient to selectively connect the inlet opening or the outlet opening to the metering chamber, in order to achieve the shortest possible and fastest adjustment movements of the control sleeve, it is useful to provide at least two connecting channels or axial grooves, these being arranged such that in no position, both the inlet opening and the inlet opening are connected to the metering chamber.
- the conical section of the control sleeve is preferably formed at the axial end protruding into the metering chamber, the axial grooves also being provided in the conical section of the control sleeve.
- FIG. 1 shows a vertical section through a metering device according to the invention in the starting position
- FIG. 2 shows a top view of the metering device according to FIG. 1 with the cover removed
- FIG. 3 the dosing device according to FIG. 1 at the end of the intake stroke
- FIG. 4 shows a top view of the metering device according to FIG. 3 with the cover removed
- FIG. 5 the dosing device according to FIG. 1 at the end of the delivery cycle
- FIG. 6 shows a top view of the metering device according to FIG. 5 with the cover removed
- FIG. 7 the dosing device according to FIG. 1 at the end of the intake stroke in a first alternative operating mode
- FIG. 8 shows the dosing device according to FIG. 1 at the end of the intake stroke in a second alternative operating mode
- FIG. 9 shows the dosing device according to FIG. 1 in the cleaning position.
- a metering device 10 in a tube filling machine comprises a housing 11, which is held on a carrier 17, not shown.
- An axial bore 12 is formed in the housing 11, which continuously widens conically in the upper region of the housing 11.
- This conically widened section 12a of the axial bore 12 defines in its interior a metering chamber 13 which is sealed at the upper end of the housing 12 by a cover 16.
- a radial inlet opening 14 is formed in the housing 11, through which a filling medium can be introduced into the metering chamber 13, as indicated by the arrow M.
- a radial outlet opening 15 is formed in the housing 11, through which the filling medium can be pressed out of the metering chamber 18 to a filling nozzle, not shown, as indicated by the arrow F in FIG. 5 is indicated.
- a radial bore 11a is formed in the housing 11, which is connected to a supply of flushing liquid, not shown.
- a control sleeve 18 is inserted, which is seated with a lower circular cylindrical portion with a tight fit in the axial bore 12 and has a conically widened portion 18a at the upper end, which has the same pitch angle as the conical portion 12a of the axial bore 12 has.
- the metering chamber 13 is formed between the upper end face of the conical section 18a of the control sleeve 18 and the cover 16.
- Fig. 1 shows the control sleeve 18 in its lower position, in which its conical section 18a sealingly abuts the conical section 12a of the axial bore 12.
- two axial grooves 18b and 18c opening at the upper end face thereof are formed, the width of which essentially corresponds to the width of the inlet opening 14 and the outlet opening 15 and extends up to whose foot area extend.
- the two axial grooves 18b and 18c are offset by an angle of approximately 135 ° in the circumferential direction of the control sleeve.
- a central axial through-bore 18d is formed in the control sleeve 18, which is widened in the lower section of the control sleeve 18 to form a flushing chamber 18e of larger diameter.
- the rinsing chamber 18e is connected to the supply of rinsing liquid, not shown, via a radial feed opening 21.
- a first metering piston 19 is slidably inserted into the axial through-bore 18d of the control sleeve 18, which has an annular cross-section and has at its upper end a piston section 19a which fits tightly in the axial through-bore 18d of the control sleeve 18. The dimensions of the first metering piston 19 are reduced below the piston section 19a. The metering piston 19 penetrates at the lower end of the control sleeve 18 at a bore 18f and is guided through this.
- a central axial bore 19b of constant cross section is formed, in which a second metering piston 20 is slidably arranged.
- the second metering piston 20 has an upper piston section 20a, which fits tightly and seals in the axial bore
- the axial bore 19b of the first metering piston 19 has a feed opening 23 at its lower end, which is also connected to the supply of flushing liquid.
- the first metering piston 19 can either be moved together with the second metering piston 20 as a unit in the axial bore 18d of the control sleeve 18, but it is also possible to adjust each of the metering pistons 19 and 20 independently of the other metering piston.
- FIG. 1 and 2 show the starting position of a metering process.
- the two metering pistons 19 and 20 with their piston sections 19a and 20a are each in an upper end position and the control sleeve 18 is set within the housing 11 such that the inlet opening 14 is connected to the metering chamber 13 via the axial groove 18b.
- the connection between the metering chamber 13 and the outlet opening 15 is interrupted.
- the two metering pistons 19 and 20 are adjusted downwards as a unit within the axial bore 18d of the control sleeve 18, as a result of which the volume of the metering chamber 13 is increased (see FIG. 3).
- the resulting vacuum draws the filling medium through the inlet opening 14 and the axial groove 18b into the metering chamber 13.
- the control sleeve 18 is rotated through 45 °, as a result of which the connection between the inlet opening is set to 14 and the Dosierkam ⁇ mer 13 is interrupted and, instead, a communication between the metering chamber 13 and the outlet port 15 manufacturer (see Fig. 6). Then, the two dosing pistons 19 and 20 are moved upward together, whereby the volume of the metering chamber 13 is reduced again, with the result that the filling medium is forced out from the Dosierkam ⁇ mer 13 via the axial groove 18c through the outlet port 15 °.
- the resulting increase in pressure Within the metering chamber 13 also acts on the control sleeve 18 and presses it downward, so that the conical section 18a of the control sleeve 18 is pressed against the conical section 12 of the axial bore 12 of the housing 11, whereby the sealing effect is enhanced.
- the control sleeve 18 is then rotated again by 45 ° in the opposite direction, so that the starting position according to FIG. 1 is reached again, from which a new dosing process can be started.
- the metering pistons 19 and 20 can also be adjusted independently of one another.
- a first example of this is shown in FIG. 7. Starting from the starting position according to FIG. 1, in which the metering chamber 13 is connected to the inlet opening 14 via the axial groove 18b, not both metering pistons 19 and 20 are now adjusted, but the inner second metering piston 20 remains and only the annular outer first metering piston 19 is adjusted downward, so that even the medium is sucked through the inlet opening 14 and the axial groove 18b into the metering chamber 13, but the volume increase of the metering chamber 13 is less, so that the amount of filling medium sucked in is also reduced.
- FIG. 8 shows an alternative mode of operation in which the outer, ring-shaped first metering piston 19 stops while rend only the inner second metering piston 20 is adjusted downwards for sucking the filling medium into the metering chamber 13.
- the resulting increase in volume of the metering chamber 13 is even less than in the previously explained example, in which only the outer first metering piston 19 is adjusted, so that an even smaller amount of filling medium is metered.
- the filling medium is pressed out of the metering chamber 13 in that the second metering piston 20 is returned to its upper starting position.
- the metering device 10 When changing the filling medium to be metered, the metering device 10 must be cleaned. For this purpose, the components can be moved into a so-called cleaning position, which is shown in FIG. 9.
- the outer first metering piston 19 is moved downward within the axial through bore 18d of the control sleeve 18 to such an extent that its piston section 19a is freely arranged in the rinsing chamber 18e of the control sleeve 18.
- the piston section 20a of the inner second metering piston 20 protrudes completely upward from the axial bore 19b of the first metering piston 19 and lies freely within the axial through-bore 18d of the control sleeve 18. This is turned upward a small amount relative to the housing 11.
- Cleaning or rinsing liquid is introduced into the rinsing chamber 18e through the feed opening 21, as indicated by the arrow CI, which rinses the piston section 19a of the outer first metering piston 19 and thereby cleans it.
- cleaning or rinsing liquid is introduced through the feed opening 23 into the axial bore 19b of the first metering piston 19, as indicated by the arrow C2, which flows through the axial bore 19b and exits at the upper end and then the around exposed piston section 20a of inner second metering piston 20.
- Section 12a of the axial bore 12 of the housing 11 and the conical section 18a of the control sleeve 18 form an annular gap which is connected at its lower end to the opening 11a through which the cleaning or rinsing liquid is introduced, as shown by the arrow C3 is.
- cleaning and rinsing liquid can also be introduced through the inlet opening 14 (arrow C4).
- the cleaning and rinsing liquid introduced in the aforementioned manner can be discharged, for example, through the outlet opening 15, as indicated by the arrow C5.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Supply Of Fluid Materials To The Packaging Location (AREA)
- Confectionery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128669 | 2001-06-13 | ||
DE10128669A DE10128669A1 (de) | 2001-06-13 | 2001-06-13 | Dosiervorrichtung in einer Tubenfüllmaschine |
PCT/EP2002/006326 WO2002100719A2 (de) | 2001-06-13 | 2002-06-10 | Dosiervorrichtung in einer tubenfüllmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1395490A2 true EP1395490A2 (de) | 2004-03-10 |
EP1395490B1 EP1395490B1 (de) | 2005-01-26 |
Family
ID=7688141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754646A Expired - Lifetime EP1395490B1 (de) | 2001-06-13 | 2002-06-10 | Dosiervorrichtung in einer tubenfüllmaschine |
Country Status (10)
Country | Link |
---|---|
US (1) | US20040251279A1 (de) |
EP (1) | EP1395490B1 (de) |
JP (1) | JP2005521598A (de) |
AT (1) | ATE287825T1 (de) |
AU (1) | AU2002320836A1 (de) |
CA (1) | CA2450537A1 (de) |
DE (2) | DE10128669A1 (de) |
DK (1) | DK1395490T3 (de) |
ES (1) | ES2235069T3 (de) |
WO (1) | WO2002100719A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1739018A1 (de) * | 2005-06-27 | 2007-01-03 | Tetra Laval Holdings & Finance S.A. | Füllmaschine, Verfahren und Verwendung derselben |
ITBO20050751A1 (it) * | 2005-12-07 | 2007-06-08 | Tonazzi Srl | Dispositivo per l'erogazione di sostanze pastose e relativi contenitori |
DE102010004068B9 (de) | 2010-01-05 | 2021-04-22 | Fischbach Kg Kunststoff-Technik | Verfahren und Befüllvorrichtung zum Befüllen einer Kartusche mit zumindest einem Material |
CN105583750B (zh) * | 2014-11-17 | 2017-09-22 | 富泰华工业(深圳)有限公司 | 定位机构 |
FR3054205B1 (fr) | 2016-07-22 | 2018-08-24 | Nbread-Process | Dispositif pour deposer une quantite precise de produit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3261509A (en) * | 1965-02-05 | 1966-07-19 | Clay Adams Inc | Variable capacity dispensing device |
DE3010010A1 (de) * | 1980-03-15 | 1981-09-24 | Lieder Maschinenbau GmbH & Co KG, 3033 Schwarmstedt | Drehschieber |
DE3412628C2 (de) * | 1984-04-04 | 1986-05-15 | Benz & Hilgers GmbH, 4000 Düsseldorf | Vorrichtung zum dosierten Abfüllen von fließfähigem oder pastösem Füllgut in Behälter |
DE3443557A1 (de) * | 1984-11-29 | 1986-05-28 | Lieder Maschinenbau GmbH & Co KG, 3033 Schwarmstedt | Verfahren und vorrichtung zur abmessung eines fliessfaehigen produktes |
DE3636804C1 (de) * | 1986-10-29 | 1988-05-26 | Benz & Hilgers Gmbh | Vorrichtung zum dosierten Abfuellen von fliessfaehigem oder pastoesem Fuellgut in Behaelter |
DE3704901A1 (de) * | 1987-02-17 | 1988-08-25 | Lieder Maschinenbau Gmbh & Co | Fuellventil |
DE3838462A1 (de) * | 1988-11-12 | 1990-05-17 | Benz & Hilgers Gmbh | Vorrichtung zum dosierten abfuellen von fliessfaehigen produkten, insbesondere heiss abzufuellenden produkten, wie schmelzkaese od. dgl. |
IT1251298B (it) * | 1991-08-27 | 1995-05-08 | Tetra Dev Co | Metodo e dispositivo per il pompaggio dosato |
DE4312015A1 (de) * | 1993-04-13 | 1994-10-20 | Benz & Hilgers Gmbh | Vorrichtung zum Dosieren und Abfüllen von dickflüssigen oder pastösen Produkten, insbesondere Nahrungsmittel, vornehmlich Margarine oder dergleichen |
FR2781758B1 (fr) * | 1998-07-29 | 2000-09-15 | Hema Technologies | Dispositif de distribution, notamment pour doseur de machine de remplissage, et doseur equipe d'un tel dispositif |
DE19918430C2 (de) * | 1999-04-23 | 2002-07-11 | Stefan Maier | Vorrichtung zum dosierten Abfüllen von Flüssigkeiten mit hoher Viskosität |
DE20006235U1 (de) * | 2000-04-07 | 2000-08-17 | robko Sondermaschinenbau GmbH, 28777 Bremen | Vorrichtung zur Befüllung von Behältnissen |
-
2001
- 2001-06-13 DE DE10128669A patent/DE10128669A1/de not_active Withdrawn
-
2002
- 2002-06-10 DE DE50202119T patent/DE50202119D1/de not_active Expired - Fee Related
- 2002-06-10 JP JP2003503499A patent/JP2005521598A/ja not_active Withdrawn
- 2002-06-10 AT AT02754646T patent/ATE287825T1/de not_active IP Right Cessation
- 2002-06-10 ES ES02754646T patent/ES2235069T3/es not_active Expired - Lifetime
- 2002-06-10 US US10/479,585 patent/US20040251279A1/en not_active Abandoned
- 2002-06-10 EP EP02754646A patent/EP1395490B1/de not_active Expired - Lifetime
- 2002-06-10 AU AU2002320836A patent/AU2002320836A1/en not_active Abandoned
- 2002-06-10 WO PCT/EP2002/006326 patent/WO2002100719A2/de active IP Right Grant
- 2002-06-10 DK DK02754646T patent/DK1395490T3/da active
- 2002-06-10 CA CA002450537A patent/CA2450537A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO02100719A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP1395490B1 (de) | 2005-01-26 |
CA2450537A1 (en) | 2002-12-19 |
DK1395490T3 (da) | 2005-05-23 |
US20040251279A1 (en) | 2004-12-16 |
ES2235069T3 (es) | 2005-07-01 |
JP2005521598A (ja) | 2005-07-21 |
DE10128669A1 (de) | 2002-12-19 |
WO2002100719A2 (de) | 2002-12-19 |
DE50202119D1 (de) | 2005-03-03 |
ATE287825T1 (de) | 2005-02-15 |
WO2002100719A3 (de) | 2003-10-23 |
AU2002320836A1 (en) | 2002-12-23 |
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