EP3727704A1 - Ensemble à piston pour un dispositif d'éjection à cartouche - Google Patents

Ensemble à piston pour un dispositif d'éjection à cartouche

Info

Publication number
EP3727704A1
EP3727704A1 EP18830168.3A EP18830168A EP3727704A1 EP 3727704 A1 EP3727704 A1 EP 3727704A1 EP 18830168 A EP18830168 A EP 18830168A EP 3727704 A1 EP3727704 A1 EP 3727704A1
Authority
EP
European Patent Office
Prior art keywords
piston
cartridge
pressure plate
edge
holding
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.)
Pending
Application number
EP18830168.3A
Other languages
German (de)
English (en)
Inventor
Zbigniew Noniewicz
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.)
Wolfcraft GmbH
Original Assignee
Wolfcraft 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 Wolfcraft GmbH filed Critical Wolfcraft GmbH
Publication of EP3727704A1 publication Critical patent/EP3727704A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B05C17/0116—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 characterised by the piston driving means
    • B05C17/012—Stepwise advancing mechanism, e.g. pawl and ratchets
    • B05C17/0123—Lever actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container

Definitions

  • the invention relates to a piston arrangement with a piston for a cartridge ejection device for expressing a pasty mass from a cartridge having an inner wall, comprising a rear side which can be acted upon by a pressure plate, a front side opposite this and a holding element which is in a holding position with a holding projection which overlaps an edge of the printing plate, ties the printing plate to the rear side.
  • the invention also relates to a cartridge ejection device designed with such a piston arrangement.
  • US 2014/0084022 A1 discloses a piston ejection device in which the piston is hook-connected to a pull hood connected to the push rod. The outgoing from the piston hooks engage in slots of the hood.
  • US 3,162,337 discloses a cartridge ejection device in which a pressure plate is fixedly connected to a push rod. The push rod engages in a rear cup-shaped recess of the piston and there is bayonet-like manner connected to the piston.
  • EP 3 075457 A1 describes a cartridge ejecting device with a piston.
  • the piston has a front side which points in the direction of a pasty mass to be expressed from a cartridge, wherein in the cartridge a second piston can be arranged which extends from the front side of the cartridge Kolbens can be acted upon.
  • the front side of the piston opposite the rear side is fastened to a pressure plate, which is connected to the end of a pressure rod.
  • the push rod can be linearly displaced with a stepping gear by reciprocating a drive lever to displace the piston in a push-out direction.
  • the holding member for capturing the pressure plate to the back of the piston is formed here by a U-shaped, in cross section F-shaped web, which overhangs the edge of the pressure plate with a blocking edge.
  • the pressure plate can be pushed laterally into an opening. If a release lever of the cartridge ejection device is brought into a fixed position, the push rod can be retracted. With it, the piston is displaced in the cartridge.
  • DE 20 2010 013 511 U1 discloses a replaceable piston for a cartridge ejection device in which retaining tongues engage in a groove.
  • Cartridge presses are also described in US 3,069,053 and WO 96/08428.
  • the piston assembly according to the invention has a piston with at least one first retaining projection, which is fastened deflectable on the piston in a direction away from the pressure plate.
  • a displacement of the retaining projection relative to the pressure plate of the retaining projection is brought into a release position in which the pressure plate can be separated in the direction away from the back of the piston.
  • the retaining projection is elastically evasive attached to the piston.
  • the retaining projection may be secured via a spring bar with the piston.
  • the pressure plate is connected at its center to a push rod which can be displaced linearly in order to push the pasty mass out of the cartridge.
  • the push rod defines an axis.
  • the two holding projections are arranged diametrically relative to the axis.
  • a limiting projection can be provided, which forms a contact edge on which the edge of the pressure plate rests.
  • the limiting projection may be formed by an arcuate boundary rib.
  • the stop flank is arranged in particular on a limiting rib which runs on the circumferential contour line of the piston between two holding members.
  • the holding members can only be moved from the holding position to a release position when the piston is not in a cartridge.
  • the holding member has a supporting flank.
  • the support flank preferably has radially outward and moves when moving the holding member from the holding position to the release position radially outward.
  • the Supporting flank has such a radial distance from the axis of the piston that the inner wall of the cartridge is in the path of movement of the supporting flank, when it is displaced in the direction of the release position.
  • the inner wall of the cartridge thus forms together with the supporting flank a locking mechanism with which the retaining member is held in the holding position when the piston is in the cartridge.
  • the support flank is thus arranged such that, when the piston is in the cartridge, it prevents deflection, in particular elastic deflection of the retaining member into the release position, by striking or contacting the inner wall of the cartridge.
  • the support flank can be formed by a support arm, which is arranged at a free end of the spring web.
  • the support arm projects radially outward.
  • the retaining projection which on its side facing the rear side forms the blocking flank, which in the retaining position engages over the edge of the pressure plate.
  • the support flank or the support flank forming support arm has a greater axial distance to the back, as the retaining projection.
  • a side facing away from the edge of the pressure plate side of the spring bar can be spaced by a radial distance from the inner wall of the cartridge. This radial distance is bridged by the support arm.
  • the front side of the piston is formed by a pressure portion having a frustoconical outer wall.
  • the front side has a radially outer peripheral edge, the radial distance of which corresponds approximately to the radial distance of the supporting flank from the axle.
  • the holding projection may have a bevel leading away from the blocking edge.
  • the edge of the pressure plate occurs when the pressure plate is assigned to the piston against this run-on slope. By running the edge of the pressure plate on the run-up slope, the holding members are pivoted into the release position. In this case, the spring web bends elastically and then snaps back into the holding position, in which the edge of the pressure plate is covered by the retaining projection.
  • the holding members are in particular made of the same material with the Plastic existing piston connected.
  • the piston made of plastic can have a radial slot, so that it can be plugged into such cartridges or tubes whose inner diameter is slightly larger than the diameter of the edge of the front. By compressing the gap, the circumferential length of the edge of the gap decrease
  • the front side is formed in particular by a cup-shaped depression.
  • Fig. 4 in perspective and cut one with a plunger
  • Fig. 5 is a side view of the attached to a pressure plate 8
  • FIG. 6 is a perspective view of the asked in Figure 1 represents
  • Fig. 7 is a perspective view of the piston with a view of the
  • Fig. 7a is a sectional view similar to Figure 2 when attaching a
  • Fig. 7b is a sequential view to Figure 7a, after the pressure plate. 8
  • Holding members 16 has brought into a release position
  • Fig. 7c is a further sequence after the holding members 16 their
  • the exemplary embodiment of the invention relates to a cartridge press 1 which has an actuating housing 2 in which a push rod 7 is guided linearly.
  • the push rod 7 can be displaced stepwise in a direction of expression by a pivoting operation of a drive lever 3 in the direction of a handle 4.
  • the actuation of a release lever 6 is required.
  • the push rod 7 carries a pressure plate 8, which has an outer edge 8 '. With this outer edge 8 ', the pressure plate 8 fiction, according to as fastened to a piston 11.
  • the pressure plate 8 has a rotational symmetry.
  • the piston 11 is a material-like body made of plastic, which has a front side 13 which has a circular outline.
  • a peripheral edge 14 surrounding the front side 13 extends a circular arc line.
  • the peripheral edge 14 surrounds a cup-shaped depression.
  • the edge 14 is adjoined by a frusto-conical surface.
  • the front side 13 is located opposite a rear side 12, which receives a receiving space 12 'for receiving the pressure plate 8.
  • the receiving clearance 12 ' is delimited by two limiting ribs 15 extending on a circular arc line, each forming a contact flank 15' for engaging the edge 8 'of the pressure plate 8.
  • the boundary rib 15 is divided into two halves by a radial slot, wherein the radial slot also divides the main body forming the cup-shaped depression.
  • Two diametrically opposed retaining members 16 are provided, relative to the pressure rod 7 arranged in the axis of the pressure plate 8.
  • Each of the two holding members 16 forms a holding projection 18 with a blocking edge 23.
  • the blocking flank 23 lies in a holding position over the edge 8 'of the pressure plate 8 in order to fix the pressure plate 8 to the piston 11.
  • the retaining projection 18 has a ramp 19 on its side opposite the blocking flank 23 and is fastened to a free end of a spring web 17.
  • the spring bar 17 extends - with respect to the axis of the pressure plate 8 - in the axial direction away from the main body of the piston 11, which has a frusto-conical shape.
  • the spring bar 17 has a radial distance from a circumferential circular arc line, which is defined by the course of the peripheral edge 14.
  • the distance of the spring bar 17 to the axis is less than the radius of the edge 14th
  • a support arm 20 is fastened to the holding projection 18 and in particular to its free end.
  • the support arm 20 protrudes in the radial outward direction and forms a supporting flank 21 with a circumferential line.
  • This supporting flank 21 has approximately the same radial distance from the axis as the edge 14.
  • a projection protrudes from the radially outermost section of the supporting arm 20
  • the projection 22 protrudes in the axial direction from the support arm 20, it can be used as an actuating handle to pivot the holding member 16 from a stop position to a release position.
  • the supporting flank 21 forms, with an inner wall 10 of a cartridge 9 or a tube, a locking element which prevents the plunger 11 inserted in a cartridge from being able to separate from the pressure plate 8.
  • the radial distance of the inner wall 10 to the support edge 21 is in fact less than the radial length of the overlap of the locking edge 23 over the edge 8 'of the pressure plate 8.
  • the support flank 21 abuts against the inner wall 10 of the cartridge 9 and thus prevents the locking edge 23 loses the edge 8 'cross-blocking effect.
  • the diameter of the rim 14 is slightly larger than the inner diameter of the tube 9 forming the cartridge.
  • the supporting flanks 21 run on the same circumferential circle. If such a piston 11 is inserted into the cartridge 9, the radial slot 25 has to be somewhat compressed. Also, the two opposing holding members 16 must be slightly shifted towards each other.
  • the support flanks 21 are then coated with a low spring before oltage S at the home nenwandung 10 at.
  • a window is formed between two spring webs 17, so that the support arm 20 or the retaining projection 18 is connected to the base body, which has a truncated cone shape, with two spring webs 17.
  • a piston assembly which is characterized in that the Hal- tevorsprung 18 in a direction away from the push rod 7 in a release Se ttings displaceable on the piston 11 is fixed.
  • a piston arrangement which is characterized in that the retaining projection 18 is attached elastically deflectable to the piston 11.
  • a piston arrangement which is characterized in that the holding member 16 forms a spring bar 17, with which the holding projection 18 is fastened to the piston 11.
  • a piston arrangement which is characterized by a second retaining projection 18, which is opposite to the retaining projection 18, and which in particular can likewise be elastically displaced into a release position.
  • a piston assembly which is characterized by a contact edge 15 'for abutment of the edge 8' of the pressure plate.
  • a piston arrangement which is characterized in that the contact surface 15 'is formed by a limiting rib 15.
  • a piston arrangement which is characterized in that the holding member 16 has a supporting flank 21 which, when the piston 11 is inserted in the cartridge 9, deflects the holding member 16 due to abutment or abutment against the inner wall 10 of the cartridge 9 prevented in the release position.
  • a piston arrangement which is characterized in that the support flank 21 is formed by a support arm 20.
  • a piston assembly which is characterized in that a locking edge 23 of the retaining projection 18 is opposite a ramp 19.
  • a cartridge press in which by pressing a drive lever (3), the push rod (7) is displaced.

Landscapes

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

Abstract

L'invention concerne un ensemble à piston comprenant un piston pour un dispositif d'éjection à cartouches (1) servant à éjecter une masse pâteuse hors d'une cartouche (9) comportant une paroi intérieure (10). L'ensemble à piston comporte un piston (11) et un côté arrière (12) pouvant être soumis à l'action d'une plaque de pression (8) fixée sur une tige de pression (7), un côté frontal (13) faisant face au côté arrière et un organe de maintien (16) qui retient la plaque de pression (8) sur le côté arrière (12) dans une position de maintien avec une partie faisant saillie de maintien (18) surmontant un bord (8') de la plaque de pression (8). L'invention vise à perfectionner avantageusement en matière d'utilisation un ensemble à piston de ce type comprenant un piston pour un dispositif d'éjection à cartouches. L'invention propose à cet effet que la partie faisant saillie de maintien (18) soit fixée dans une direction s'éloignant de la tige de pression (7) sur le piston (11) de manière à pouvoir être déplacée dans une position de déblocage.
EP18830168.3A 2017-12-19 2018-12-12 Ensemble à piston pour un dispositif d'éjection à cartouche Pending EP3727704A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017107724.1U DE202017107724U1 (de) 2017-12-19 2017-12-19 Kolben für eine Kartuschen-Ausdrückvorrichtung
PCT/EP2018/084488 WO2019121207A1 (fr) 2017-12-19 2018-12-12 Ensemble à piston pour un dispositif d'éjection à cartouche

Publications (1)

Publication Number Publication Date
EP3727704A1 true EP3727704A1 (fr) 2020-10-28

Family

ID=64959286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18830168.3A Pending EP3727704A1 (fr) 2017-12-19 2018-12-12 Ensemble à piston pour un dispositif d'éjection à cartouche

Country Status (5)

Country Link
US (1) US11148168B2 (fr)
EP (1) EP3727704A1 (fr)
CN (1) CN111491745B (fr)
DE (1) DE202017107724U1 (fr)
WO (1) WO2019121207A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7094906B2 (ja) * 2019-02-15 2022-07-04 三菱重工業株式会社 流動性材料吐出装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688325A (en) * 1952-09-12 1954-09-07 Compule Corp Piston plug withdrawal limiting means for hypodermic syringe devices and the like
US2815151A (en) * 1955-07-18 1957-12-03 Harold B Collins Anti-drip calking gun and cartridge
US3069053A (en) 1958-04-04 1962-12-18 Gustav W Nilsson Caulking gun
US3162337A (en) * 1963-11-15 1964-12-22 Sabaka George Flow control plunger assembly
US4678107A (en) * 1985-08-02 1987-07-07 Mark L. Anderson Dripless dispenser for liquids and viscous fluids
US4911695A (en) * 1989-04-03 1990-03-27 Coeur Laboratories, Inc. Plunger for power-driven angiographic syringe, and syringe and power injector system utilizing same
NL9401492A (nl) 1994-09-13 1996-04-01 Arthur Van Moerkerken Methode en onderdeel om navloeien van tubes te voorkomen.
WO2001005456A1 (fr) * 1999-07-15 2001-01-25 Bracco International B.V. Piston pour seringue
DE102006047289B4 (de) * 2006-10-06 2008-09-04 Sulzer Chemtech Ag Kartuschenkolben
ES2421328T3 (es) * 2006-11-22 2013-08-30 Mallinckrodt Llc Método de uso de un adaptador para un émbolo de jeringa
DE102008022999A1 (de) * 2008-05-09 2009-11-12 Fischerwerke Gmbh & Co. Kg Kolben für eine Kartusche und Kartusche
DE202010013511U1 (de) 2010-11-13 2011-01-20 Klinger, Markus Wechselkolben für Aufstreichgerät
US9101200B2 (en) 2012-06-29 2015-08-11 David Dickson Wheeled luggage attachment device
US20140084022A1 (en) * 2012-09-27 2014-03-27 William Paul Dispensing gun for applying a flowable sealant from a tube incorporating a plunger end mounted support with incorporated spring for providing even flow inducing force application
CN204523433U (zh) * 2015-03-19 2015-08-05 株式会社牧田 胶枪
GB2538361B (en) 2015-04-02 2018-04-18 Siang Syuan Fu Entpr Co Ltd Assembly for a carrier for carrying a caulk cartridge and caulking gun
TWI576167B (zh) 2015-04-02 2017-04-01 翔宣富企業有限公司 矽膠槍推件及矽膠槍
US9630204B2 (en) * 2015-04-27 2017-04-25 Siang Syuan Fu Industry Co., Ltd. Plunger for caulking gun
DE102017100627A1 (de) 2017-01-13 2018-07-19 Wolfcraft Gmbh Kartuschenpresse

Also Published As

Publication number Publication date
CN111491745A (zh) 2020-08-04
DE202017107724U1 (de) 2019-03-21
CN111491745B (zh) 2022-07-19
WO2019121207A1 (fr) 2019-06-27
US20210086223A1 (en) 2021-03-25
US11148168B2 (en) 2021-10-19

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