EP0620047A1 - Piston pour dispositif d'extrusion - Google Patents

Piston pour dispositif d'extrusion Download PDF

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Publication number
EP0620047A1
EP0620047A1 EP93810758A EP93810758A EP0620047A1 EP 0620047 A1 EP0620047 A1 EP 0620047A1 EP 93810758 A EP93810758 A EP 93810758A EP 93810758 A EP93810758 A EP 93810758A EP 0620047 A1 EP0620047 A1 EP 0620047A1
Authority
EP
European Patent Office
Prior art keywords
engagement part
piston
central engagement
central
scraper edge
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
Application number
EP93810758A
Other languages
German (de)
English (en)
Other versions
EP0620047B1 (fr
Inventor
Sedlmeier Andreas
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0620047A1 publication Critical patent/EP0620047A1/fr
Application granted granted Critical
Publication of EP0620047B1 publication Critical patent/EP0620047B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00583—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes the container for the material to be dispensed being deformable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like

Definitions

  • the invention relates to a piston for a squeezing device for squeezing out masses located in plastic bags with a central engagement part for a piston rod and a stripping edge which projects radially beyond the engagement part and at least partially surrounds the engagement part.
  • German patent application P 42 31 420.8 discloses a piston of a squeezing device which is composed of two individual pistons, each individual piston having a central engagement part, being curved in the end region and having a wiping edge which projects radially beyond the surrounding part.
  • the plunger shown is located in a cylindrically shaped cassette part which receives film bags and is, for example, part of the squeezing device or can be inserted as a separate part into a squeezing device.
  • the piston which can be acted upon on both sides, is displaceably arranged in the cassette part.
  • a piston rod with thrust piece serves for the axial displacement of the piston.
  • the cassette part is open from both ends. After each pressing-out operation, the folded, pressed-out film bag is removed from the cassette part and a new film bag filled with mass is inserted, namely from that end which lies opposite the piston. After aligning the cassette part with the squeezing device, the cassette part is inserted into the squeezing device so that the next squeezing process can take place.
  • each individual piston has a storage space in the peripheral region of the central engagement part, which extends in each case from the end region of the individual piston to the wiping edge.
  • the known piston thus has two storage spaces arranged axially one behind the other, which are separated from one another by the scraper edges.
  • the overall length of the piston depends on the length of the storage spaces. The required considerable length of the storage spaces thus affects the overall length of the piston, the overall length of the cassette part and the overall length of the squeezing device.
  • the invention has for its object to provide a double-acting piston with two storage spaces, the piston having a length-reducing construction acting on the cassette part and the squeezer.
  • the piston located in the cassette part is supported on the inner wall of the cassette part via a sealing area of the scraper edge.
  • the central engagement part is displaced axially relative to the scraper edge.
  • the central engagement part and the scraper edge preferably have mutually interacting means, which combine the two parts into one unit.
  • Interacting means are expediently formed by projections of the scraper edge pointing towards the center.
  • the wiping edge is supported radially with respect to the central engagement part via these projections.
  • a corresponding design of the outer contour of the central engagement part and the free ends of the projections enables the wiper edge to be axially displaceable relative to the central one Assault part guaranteed.
  • the projections are arranged on the scraper edge in such a way that they protrude from the sealing area of the scraper edge.
  • the free end of the projections is preferably T-shaped.
  • the T-shaped configuration extends at least partially in the longitudinal direction and in the circumferential direction of the outer contour of the piston.
  • Interacting means of guides are advantageously formed on the central engagement part. So that the scraper edge can be axially offset with respect to the central engagement part, the outer contour of the central engagement part is designed such that a guide for the scraper edge is created.
  • the outer contour of the central engagement part is cylindrical, for example, and has a stop in each of the two end regions, which limits the axial displacement of the scraper edge.
  • the guides are preferably formed by slots which are open to the outer contour of the central engagement part and extend in the longitudinal direction of the central engagement part and which interact with correspondingly designed projections of the wiping edge.
  • These projections are designed at least so long that they protrude beyond the outer contour of the central engagement part in the radial direction or protrude through the slots into the interior of the central engagement part.
  • Those protrusions that protrude into the interior of the central engagement part can also be T-shaped. This T-shaped design also serves to ensure better tilting stability of the scraper edge compared to the central part of the attack.
  • the T-shaped end of the projections is supported in the radial direction on a guide surface of the piston running in the longitudinal direction of the piston.
  • the size of the storage spaces can be changed.
  • the slots serving to guide the scraper edge expediently extend over 70% to 90% of the total length of the central engagement part.
  • the pressing device shown in FIG. 1 consists of a central, cylindrical housing 1, to which a pressing nozzle 2 is connected in the pressing direction in connection with a closure element 3.
  • a cylindrical housing 1 In the cylindrical housing 1 there is a likewise cylindrical cassette part 4, which receives a foil bag 5 and the piston 6 according to the invention.
  • the entire feed mechanism 7 for a piston rod 8 is arranged in the rear area of the pressing device opposite the pressing direction.
  • a pressure piece 9 is arranged, which can be connected to the central engagement part 14 of the piston 6.
  • a handle part 10 In the rear area of the housing 1 there is also a handle part 10, to which a trigger lever 11 is fastened so as to be pivotable about an axis in the direction of the handle part 10.
  • the trigger lever 11 When the trigger lever 11 is actuated, the piston rod 8 is displaced in the squeezing direction with the aid of the feed mechanism 7.
  • the connection between the feed mechanism 7 and the piston rod 8 can be interrupted with the aid of an unlocking arm 12, so that the piston rod 8 can be pulled back freely, axially.
  • FIG. 2 shows an enlarged view of the cassette part 4, in which there is a film bag 5 filled with mass 13 and the piston 6 according to the invention.
  • the partially shown piston rod 8 in connection with the pressure piece 9 is also shown.
  • the piston 6 is shown in its starting position before the start of the squeezing process.
  • the piston 6 consists of two halves 16, 17 which are held together by means of a snap connection.
  • the snap connection consists of a claw-like arm 18 which projects from one half 16 of the piston 6 in the longitudinal direction of the piston 6 and engages behind a corresponding recess 19 in the second half 17 of the piston 6.
  • a corresponding entry slope 20 on the claw-like arm 18 ensures that when the two halves 16, 17 are joined together, a radial displacement of the claw-like arm 18 is possible before the latter can reach behind the corresponding recess 19.
  • the piston 6 has a plurality of substantially uniform slots 21 which are distributed around the circumference and extend in the longitudinal direction of the piston 6.
  • the slots 21 are formed closed, so that the longitudinal ends of the slots 21 serve as stops for projections 22 of the axially displaceable scraper edge 15.
  • the slots 21 are designed as radially extending through openings in the peripheral region of the central engagement part 14.
  • the circumferential width B of the slots 21 essentially corresponds to the circumferential thickness of the projections 22 of the scraper edge 15.
  • the wiping edge 15 projects beyond the central engagement part 14 in the radial direction and surrounds the central engagement part 14.
  • the radial support and the axial guidance of the wiping edge 15 with respect to the central engagement part 14 takes place via the projections 22 which extend from the sealing region 28 of the wiping edge 15 in the radial direction. Pointing towards the center.
  • the projections 22 consist of individual spokes, the free end of which is T-shaped.
  • the T-shaped design of the projections 22 is supported radially in the interior of the central engagement part 14 on a corresponding guide surface 23, so that the wiping edge 15 achieves better tilting stability compared to the central engagement part 14.
  • the slots 21 form guides in which the projections 22 are only axially displaceable.
  • the central engagement part 14 of the piston 6 has a central through bore 24, which serves to receive a closure element 25 of the foil bag 5.
  • the diameter of the through hole 24 widens towards the free ends in the end region of the central engagement part 14.
  • the smallest diameter of the through bore 24 can be found in the middle of the central engagement part 14, where both halves 16, 17 of the piston 6 meet.
  • the pressure piece 9 arranged on the piston rod 8 serves to entrain the piston 6 when the piston rod 8 is axially displaced.
  • the pressure piece 9 has a projection 27 protruding in the pressing-out direction from a pressure surface 26 in the pressing-out direction, which projection essentially corresponds to the contour of the through bore 24 in the end region of central attack part 14 is coordinated.
  • a storage space 29 formed in the peripheral region of the central engagement part 14 is open towards the piston rod 8.
  • the pressing-out process in which the mass 13 is pressed out of the film bag 5 with the aid of the piston 6 according to the invention and the piston rod 8 with the pressure piece 9, is shown in FIG. 3.
  • the sealing surface 28 of the scraper edge 15 bears on the inner wall of the cassette part 4. Due to the friction between the sealing area 28 of the scraper edge 15 and the inner wall of the cassette part 4, the scraper edge 15 maintains its position during the axial displacement of the central engagement part 14 until the projections 22 of the scraper edge 15 at one end of the radially formed as guides extending slots 21 of the central attack part 14 come to the plant.
  • the stripping edge 15 is carried along in the pressing direction.
  • a storage space 29 is created in the region of the piston 6 on the pressing-out direction. This storage space 29 serves to accommodate a part of the pressed-out, folded-up foil bag 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Fluid-Damping Devices (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Sampling And Sample Adjustment (AREA)
EP93810758A 1993-04-10 1993-10-29 Piston pour dispositif d'extrusion Expired - Lifetime EP0620047B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311876 1993-04-10
DE4311876A DE4311876A1 (de) 1993-04-10 1993-04-10 Kolben für Auspressgeräte

Publications (2)

Publication Number Publication Date
EP0620047A1 true EP0620047A1 (fr) 1994-10-19
EP0620047B1 EP0620047B1 (fr) 1996-05-22

Family

ID=6485260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810758A Expired - Lifetime EP0620047B1 (fr) 1993-04-10 1993-10-29 Piston pour dispositif d'extrusion

Country Status (7)

Country Link
US (1) US5449096A (fr)
EP (1) EP0620047B1 (fr)
JP (1) JP3506760B2 (fr)
KR (1) KR100287303B1 (fr)
AT (1) ATE138292T1 (fr)
DE (2) DE4311876A1 (fr)
ES (1) ES2086918T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066319B2 (en) 1999-08-11 2006-06-27 Medi - Physics, Inc. Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6840945B2 (en) * 2001-02-28 2005-01-11 Microline, Inc. Medical clip applier safety arrangement
US7237695B2 (en) * 2004-06-14 2007-07-03 Colin Dee Mechanical grouting and re-pointing device
WO2006121978A2 (fr) * 2005-05-06 2006-11-16 Albion Engineering Company Distributeur de materiau visqueux
JP5073968B2 (ja) * 2006-05-31 2012-11-14 住友化学株式会社 化合物半導体エピタキシャル基板およびその製造方法
DE202007016705U1 (de) * 2007-11-28 2009-04-09 Inatec Gmbh Beutelschmelzer
US8544683B2 (en) 2010-10-29 2013-10-01 Nordson Corporation Multiple component dispensing cartridge and method with side-by-side fluid chambers
JP6466336B2 (ja) 2012-10-24 2019-02-06 ジェンマーク ダイアグノスティクス， インコーポレイテッド 一体型多重標的分析
US9453613B2 (en) * 2013-03-15 2016-09-27 Genmark Diagnostics, Inc. Apparatus, devices, and methods for manipulating deformable fluid vessels
US9498778B2 (en) 2014-11-11 2016-11-22 Genmark Diagnostics, Inc. Instrument for processing cartridge for performing assays in a closed sample preparation and reaction system
US9757763B2 (en) 2013-10-31 2017-09-12 Nordson Corporation Side by side cartridge assemblies and related methods
EP3195941A1 (fr) * 2016-01-20 2017-07-26 HILTI Aktiengesellschaft Dispositif de compression pour un emballage de feuilles, emballage de feuilles et bloc comprenant un dispositif de compression et un emballage de feuilles
CN112893001B (zh) * 2021-03-02 2022-04-29 康利达装饰股份有限公司 一种玻璃幕墙注胶装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075675A (en) * 1957-11-29 1963-01-29 Gibson Homans Company Piston arrangement for dispensing partially compressible plastic materials

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958445A (en) * 1958-10-30 1960-11-01 Walter A Jesse Plunger means for mortar gun
US3178074A (en) * 1961-04-24 1965-04-13 Edwin P Sundholm Pressure loading grease gun
US3612359A (en) * 1969-09-02 1971-10-12 Edwin P Sundholm Hand operated multiload grease gun
DE3148490C2 (de) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluß für einen hohlzylindrischen Strangpreßbehälter
CA1285244C (fr) * 1986-04-09 1991-06-25 Gerald S. Wasserman Couvercle flottant sur dispositif a preparer des boissons
DE3615659A1 (de) * 1986-05-09 1987-11-12 Hilti Ag Auspresskolben mit speicherkammer
US5056690A (en) * 1989-02-03 1991-10-15 Lion Corporation Dispensing container for viscous material
US5092496B1 (en) * 1991-03-11 1995-01-24 Package Res Corp Dispenser for flowable materials having a piston with a flexible sealing rim
DE9200521U1 (de) * 1991-11-12 1993-03-25 Thera Patent GmbH & Co KG Gesellschaft für industrielle Schutzrechte, 8031 Seefeld Behälter für fließfähige Substanzen
DE4231418A1 (de) * 1992-09-19 1994-03-24 Hilti Ag Vorschubmechanismus eines Auspressgerätes
US5295615A (en) * 1992-09-30 1994-03-22 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Refillable pump dispensing container

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075675A (en) * 1957-11-29 1963-01-29 Gibson Homans Company Piston arrangement for dispensing partially compressible plastic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066319B2 (en) 1999-08-11 2006-06-27 Medi - Physics, Inc. Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets

Also Published As

Publication number Publication date
DE4311876A1 (de) 1994-10-13
JPH06304513A (ja) 1994-11-01
ES2086918T3 (es) 1996-07-01
EP0620047B1 (fr) 1996-05-22
DE59302694D1 (de) 1996-06-27
KR100287303B1 (ko) 2001-04-16
ATE138292T1 (de) 1996-06-15
JP3506760B2 (ja) 2004-03-15
US5449096A (en) 1995-09-12

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