EP0420047A2 - Dispositif de dosage ou d'application de produits pâteux ou liquides - Google Patents

Dispositif de dosage ou d'application de produits pâteux ou liquides Download PDF

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Publication number
EP0420047A2
EP0420047A2 EP90118111A EP90118111A EP0420047A2 EP 0420047 A2 EP0420047 A2 EP 0420047A2 EP 90118111 A EP90118111 A EP 90118111A EP 90118111 A EP90118111 A EP 90118111A EP 0420047 A2 EP0420047 A2 EP 0420047A2
Authority
EP
European Patent Office
Prior art keywords
container
valve element
valve
pull rod
extension
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.)
Withdrawn
Application number
EP90118111A
Other languages
German (de)
English (en)
Other versions
EP0420047A3 (en
Inventor
Otto Katz
Johannes Katz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0420047A2 publication Critical patent/EP0420047A2/fr
Publication of EP0420047A3 publication Critical patent/EP0420047A3/de
Withdrawn legal-status Critical Current

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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
    • B05C17/002—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 with feed system for supplying material from an external source; Supply controls therefor

Definitions

  • the invention relates to a device for the metered delivery or for the application of liquid and pasty masses comprising a container for the mass, a delivery opening at an end of the device on the order side, passage channels between the inside of the storage container and the order opening and valve devices connected to an actuating device for optional opening and closing of the passage channels by a relative axial displacement of a valve element against the pressure of a return spring, the valve element being connected to a pull rod projecting into the storage container, on which a piston sealingly penetrating the storage container is arranged with a directional lock so that it only when the pull rod is moved towards the discharge opening.
  • Such a device is known from EP-A-0 240 738.
  • Some of these devices have a negative pressure controlled follower piston.
  • a displacer (dosing piston) is immersed in the product. This is supported by a follower piston, which is blocked in its return by blocking elements. The displaced filling material or the mass to be dispensed is fed to the dispensing opening.
  • a check valve is provided in the delivery area so that such a negative pressure can occur, ie it is not a directly controlled, reliably closing valve.
  • a disadvantage of these systems is that an exact dosing is not possible, among other things also because a different friction of the follower piston can lead to a residual vacuum remaining when the displacer is reset. This negative pressure must be compensated for by the displacer in the subsequent operation before a new funding phase, ie effective mass funding, can begin.
  • the follower piston can therefore only be installed with reduced sealing forces, which in turn leads to losses in the case of outgassing media, for example in the case of compositions with a volatile solvent.
  • the delivery side is not secured against the internal pressure which arises, for example, from such outgassing.
  • a mechanically controlled metering piston is provided.
  • the metering piston is moved by the axial movement of a pull rod.
  • a directional lock ensures that for that the piston can only move in the discharge direction.
  • Such a device corresponds in principle to the device of the generic type mentioned at the outset.
  • these conventional devices are not suitable for solvent-containing compositions because no hermetic seal can be achieved on the dispensing side.
  • the actuation geometry does not allow exact dosing.
  • the object of the invention is to design a device of the type mentioned at the outset in such a way that it can also be used permanently for volatile, solvent-containing media without any problems, and that it enables precise metering with convenient handling.
  • valve element is designed as a valve seat and the valve element encloses an axially fixed shaft, the front end of which is designed as a valve closing element.
  • the invention also relates to an actuating mechanism which is preferably used in a device of the type described above, an actuating element being designed in the form of an actuating ring arranged between the valve element and the container or a container attachment.
  • This Be The actuation ring is axially displaceable, that is to say displaceable or tiltable.
  • the actuating ring is arranged such that it can be tilted against the container or a container attachment on the one hand and the valve element on the other hand, in which case the actuating ring advantageously has an actuating lever which extends approximately parallel to the outer wall of the container or a container attachment.
  • the actuating lever then forms together with the actuating ring an approximately L-shaped configuration in cross-section, the actuating ring being tilted by pivoting this configuration relative to the longitudinal axis of the device and pushing the valve element away from the container, so that the valve is thereby opened.
  • the actuating ring is designed so that it has a lower height on the side opposite the actuating lever, and that the underside of the actuating ring extends like a cam, so that during the pivoting movement a jerk-free continuous and thus very precise control enables the valve element to be pushed away and thus the valve is opened. Due to the shape of this cam curve, i.e. the bottom of the actuating ring can practically also control the valve flow rate or opening rate depending on the pivoting angle of the actuating lever.
  • This actuating mechanism is obviously fundamentally suitable for all such application devices of comparable construction, but is particularly advantageous in the case of a device of the above described type used because it enables a particularly elegant implementation of the inventive concept.
  • the container is expediently axially tightly connected to a container attachment.
  • the container attachment is preferably essentially designed as a cylinder body and serves to accommodate the various parts of the reset mechanism and the parts used for the axial fixation in its interior as a type of housing.
  • the valve element can have a transmission shaft which extends into the interior of the container attachment and is axially connected to the pull rod.
  • This transmission shaft is preferably cylindrical.
  • the connection to the pull rod is made using a snap-in connection for easy assembly.
  • a fork element can be provided which, on the one hand, can be snapped onto an extension of the pull rod, and, on the other hand, into which the transmission shaft can be snapped. After snapping on, the connection with the pull rod can no longer be released.
  • a one-piece connection to the transmission shaft would be possible, in which case the valve element could be designed to be disengaged.
  • a sealing element is expediently arranged between the container or the container attachment and the transmission shaft, wherein according to the invention the return spring designed as a helical spring bears against this sealing element in such a way that the sealing force is increased.
  • the sealing element has an annular shape and a V-shaped cross section, so that a radial component can be applied to the one V-leg by the spring.
  • the sealing element is designed as an axially elastic bellows, avoiding a sliding seal, which is tightly connected to the container or the container attachment on the one hand and the transmission shaft on the other hand, the return spring pressing the bellows against the container or the container attachment.
  • this shaft has a holding projection which is axially fixed between annular shoulders.
  • These ring shoulders can be formed, for example, by an end face of the housing and a change in cross section of the housing attachment, so that the holding attachment is thus axially fixed when it is plugged together.
  • the holding attachment can, for example, have an essentially rectangular cross section, so that the legs of the fork element which are circular in cross section can be guided past this holding element and in this way an axial force transmission is possible despite the fixed holding element. This ensures that all moving parts are guided in a defined manner during their axial movement.
  • the proposed directional lock can be formed according to a first embodiment in that the pull rod passes through a locking disk with play, which is pressed by means of a helical spring against an oblique to the longitudinal axis stop surface.
  • the directional lock is thus a kind of freewheel, so that in the pulling direction there is a force transmission to the piston, while in the other direction the piston rod can slide freely against the piston and the piston remains in its advanced position due to its frictional force.
  • the directional lock can be formed by a cone lock, i.e. through a conical recess that surrounds the pull rod and are arranged in the locking balls, or through a conically curved locking disc with resilient locking tongues, which only allow relative movement in one direction, the locking disc acting against the inner wall of the container on the one hand and the pull rod on the other.
  • an application element is arranged in the extension of the valve element in the area of the order opening.
  • This application element can be designed, for example, as a brush, in which channels open after the application opening, or, for example, as a permeable fabric or permeable plastic part.
  • the axial back and forth movement of the valve element or a needle-like attachment connected to it can be used to deform the bellows-like application element in order to counteract incrustation.
  • the device shown in Fig. 1 comprises a storage container 1 with an interior 2 for receiving the liquid to be applied with high or low viscosity.
  • the storage container 1 is closed by an attached cover 3 with a bore 3a.
  • a transverse wall 4 opposite the cover 3 at the other end has passage openings 5 and a central guide opening 6 for an axially extending tie rod 7 with the smallest possible diameter.
  • the pull rod 7 engages in a piston 8, which is approximately cup-shaped, the outer wall 9 of which is pressed by an annular spring 10 against the inner wall 11 of the storage container 1, and which has an inner cylinder extension 12, which by means of an annular spring 13 against the train rod 7 is pressed.
  • a directional lock 14 which will be described in more detail in various embodiments, is arranged, which ensures that the piston 8 is only carried forward by the pull rod in the event of an axial movement, but in a return movement of the pull rod 7 due to the system pressure against the Inner wall of the container 11 is held in position by the annular spring 10. It is hereby achieved that with each axial movement of the pull rod 7, ie with each actuation of the actuating element described below, the piston 8 is moved forward by a distance a and in this way exerts pressure on the liquid volume in the interior 2, in such a way that that the piston 8 of the liquid rests practically without gas inclusions and exerts immediate pressure on it.
  • the storage container 1 is connected to a container extension 15, the container extension 15 having a section 16 with a reduced cross section to form an annular shoulder 17, a cylinder extension 18 of the storage container being inserted into this section of the container extension 15 to produce a tight connection.
  • the container neck 15 has at its lower end to form a further annular shoulder 19 a cylinder neck 20 of reduced cross-section.
  • a valve element 21 surrounds with a portion 22 the cylinder extension 20 of the container extension 15 and is slidably supported there in the axial direction.
  • the Ven tilelement 21 has a cylindrical transmission shaft 23 which extends through the extension 20 of the container extension 15 and extends inwards into the further region 24 of the container extension 15.
  • the transmission shaft 23 has at its inner end spring elements 25, which snap resiliently behind an annular shoulder 26 of a fork element 27 serving for the axial transmission of force.
  • the fork element 27 has two fork arms 28, which can be bent up elastically and can be latched with the aid of a plurality of ring beads 30 into corresponding ring grooves 31 on a fastening element 32 which is firmly connected to the free end of the pull rod 7. In this way, after assembly in the housing, an inseparable, axial force transmission from the valve element 21 via the fork element 27 and the fastening element 32 to the pull rod 7 is achieved.
  • a z. B arranged in cross-section triangular shaft 33, through this configuration between this shaft 33 and the transmission shaft 23 passage channels 34 are formed.
  • the shaft 33 has at its inner end a fastening element 35 which extends between the fork arms 28, 29 of the fork element 27 to the inner wall of the container extension 15 and is axially fixed there between two annular shoulders 36 and 37.
  • the fastener 35 has passage openings 35 '.
  • One annular shoulder 36 is changed by a cross-section tion of the container neck 15 and the other annular shoulder 37 formed by the free end face of the neck 18 of the container 1, that is to say during assembly, the second annular shoulder 37 is formed only when the container 1 and the container neck 15 are plugged together Fixation of the shaft 33 relative to the valve element 21 is reached.
  • a helical spring 38 serving as a return spring is supported on the one hand on the fork element 27, i.e. on a shoulder 39 of this fork element 27, and on the other hand on an annular shoulder 40 of the container extension 15 via a sealing element 41.
  • the fork element 27 and thus the valve element 21 and the piston 8 are pushed rearward into the closed position, which will be described in more detail below.
  • the sealing element 41 is V-shaped in cross section. It is hereby achieved that a force component of the helical spring 38 presses against one V-leg 42 of the sealing element 41 and brings it sealingly against the transmission shaft 23. At the same time, the V-bottom of the sealing element 41 is also pressed against the shoulder 40 in a sealing manner by the helical spring 38.
  • the helical spring 38 thus takes on a double function in that it increases the seal on the one hand and acts as a return spring on the other.
  • the valve element 21 has an outer flange 43 which is spaced apart from the shoulder 19 on the free end face of the container extension 15.
  • An actuating ring 44 surrounds the extension 20 between the shoulder 19 and the ring flange 43. It is connected to an actuating lever 44a which extends upwards at an acute angle or parallel to the container extension 15.
  • the actuating ring 44 has a greater height in the region of the outer edge 45 of the container attachment 15 serving as the pivoting edge than on its opposite side, the bore 46, which is penetrated by the attachment 20, being conical. This makes it possible to tilt the actuating ring 44 by actuating the actuating lever 44a in the direction of arrow 47 in FIG. 2, ie by pressing the actuating lever 44a, in such a way that the valve element 21 is pressed downward against the restoring force of the helical spring 38.
  • the edge of the actuating ring 44 is shifted downward by an axial distance b, which leads to a displacement of the piston 8 by the distance a via the axial transmission path described above, with a being smaller than b corresponding to the play in the ring beads 30, 31 .
  • the lower end of the valve element 21 is conical and serves as a valve seat 48 which surrounds a dispensing opening 49.
  • the lower end of the axially fixed shaft 33 has a corresponding cone and thus serves as a valve tappet.
  • the passage channels 34 are closed accordingly.
  • the sealing element 41 ' is formed as a bellows, which is fixed to the container extension 15 by the coil spring 38 and on the transmission shaft 23 by a clamping projection 52 and avoiding a sliding seal, the movement of the transmission shaft 23 relative to participates in the container approach 15.
  • a locking disk 53 is provided, which is acted upon by a helical spring 54, which is supported on an insert 55, which is engaged in the recess 56 of the cylinder extension 12.
  • the locking disk 53 has a bore 56 ⁇ for the tie rod 7, which is slightly larger than the outer diameter of this tie rod.
  • a contact surface 58 is provided as a stop surface, which extends obliquely to the longitudinal axis 59 of the pull rod 7.
  • the locking disk 53 is tilted under the influence of the helical spring 54 and the inclined contact surface 58 and is jammed on the pull rod 7, so that the piston 8 in via the locking disk 53 and the contact surface 58 Is taken in the direction of arrow 60.
  • the clamping action is released again, ie the piston 8 remains between its outside, in particular its sealing edge 61, due to the frictional force and the inner wall 11 of the storage container 1 in its last position.
  • the recess 56 ' is conical and a locking ball ring 62, generally comprising a plurality of locking balls, is provided, which is located between the movement of the pull rod 7 in the pulling direction (arrow 60) the outer surface of the tie rod 7 and the inner wall of the conical recess 56 'jammed.
  • 10 and 12 show an embodiment with a locking disk 63, which has conically arched spring tongues 64 in the area of the tie rod 7, which spring tongues jam when the tie rod 7 moves in the direction of arrow 60.
  • the outer edge 65 of the locking disk 63 has a plurality of spring tongues 66 set outward, the outer edge of which jams against the inner wall 11 of the storage container 1 when the piston 8 is acted upon in the opposite direction to the arrow 60. In this way, the intended clamping action for the piston 8 is supported to prevent a backward movement.
  • a cone lock corresponding to the embodiment according to FIG. 9 and additionally a clamping disk 67 are provided, the outer edge 68 of which exerts a similar locking effect as described in connection with the locking disk 63.
  • the on opening 49 connects an order element.
  • the valve element 21 'following the application opening 49 has a shoulder 69 with nozzle channels 70, and that a socket 71 is provided, with the aid of which a brush-like application element 72 is fixed in which the channels 70 open.
  • valve element 21 ⁇ has a shoulder 69 'similar to that in the embodiment according to Fig. 13 with passage channels 70', with a sleeve 71 'a liquid-permeable application element 73, e.g. made of textile fabric or a fine-pored plastic, the end of the approach 69 'is encircling.
  • a needle-shaped extension 74 of the shaft 33 In the closed state, a needle-shaped extension 74 of the shaft 33 generates a certain pre-tension from the inside due to its abutment on the application element 73, which is reduced when the needle-shaped extension 74 is actuated and thus lifted off.
  • a spring washer 80 is provided, which is bulged along a central region lying between its inner and outer edges.
  • This spring washer 80 improves contact of the sealing edge 61 on the Reached the inner wall of the container on the one hand and on the other hand a better seal in the area of the implementation of the pull rod 7. Due to the convex design towards the interior of the container 1 ', an increasing pressure P inside the container 1' is converted into an increasing preload of the spring washer 80. In addition, the closed spring washer 80, which seals towards the top, reduces diffusion losses of the filling material.
  • the thread 31.32 on the fastening element 32 ' has the same pitch as the thread 81.82, so that when the container 1' is screwed onto the container extension 15 ', the fastening element 32' is also screwed in. This is made possible by a toothing 84 securing the fastening element 32 against rotation relative to the container 1 '.
  • a section 85 of the fastener 32 ' serves as a stop.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP19900118111 1989-09-23 1990-09-20 Device for the metered delivery or the application of liquid or pasty products Withdrawn EP0420047A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3931849 1989-09-23
DE19893931849 DE3931849A1 (de) 1989-09-23 1989-09-23 Vorrichtung zur dosierten abgabe bzw. zum auftrag fluessiger und pastoeser massen

Publications (2)

Publication Number Publication Date
EP0420047A2 true EP0420047A2 (fr) 1991-04-03
EP0420047A3 EP0420047A3 (en) 1991-11-06

Family

ID=6390076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900118111 Withdrawn EP0420047A3 (en) 1989-09-23 1990-09-20 Device for the metered delivery or the application of liquid or pasty products

Country Status (2)

Country Link
EP (1) EP0420047A3 (fr)
DE (1) DE3931849A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363990A (en) * 1994-02-25 1994-11-15 Owens-Illinois Closure Inc. Dual chambered pump package for viscous products
WO2010118765A1 (fr) * 2009-04-13 2010-10-21 Karan Dadgar Récipient pour organe d'application
EP3575102A1 (fr) * 2018-05-28 2019-12-04 Georg Linz Fabrik moderner Schreibgeräte GmbH & Co. KG Appareil d'application

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412461U1 (de) * 1994-08-02 1994-09-22 Uhlig GmbH, 56291 Laudert Stift zum Auftrag von Flüssigkeiten auf Unterlagen
CN106043934B (zh) * 2016-06-20 2017-10-31 绍兴酷易网络科技服务有限公司 一种环保洗化用品瓶
DE102016013723A1 (de) 2016-11-17 2018-05-17 Atlas Copco Ias Gmbh Vorrichtung zum Auftragen eines viskosen Materials

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE675237A (fr) * 1966-01-18 1966-05-16
LU75926A1 (fr) * 1976-10-04 1977-05-06
EP0240738A2 (fr) * 1986-03-18 1987-10-14 A.W. Faber- Castell Unternehmensverwaltung GmbH & Co. Dispositif pour appliquer des masses capables de couler
FR2637512A1 (fr) * 1988-10-07 1990-04-13 Lvmh Rech Dispositif de delivrance automatique d'un produit ou d'un objet quelconque

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538001A1 (de) * 1985-10-25 1987-04-30 Faber Castell A W Vorrichtung zum auftragen von fliessfaehigen massen
JPS62160297A (ja) * 1986-01-09 1987-07-16 三菱鉛筆株式会社 液体塗布具
DE3736095A1 (de) * 1987-10-24 1989-05-03 Schwan Stabilo Schwanhaeusser Auftragsgeraet
DE3742297C1 (en) * 1987-12-14 1989-08-24 Geka Brush Georg Karl Gmbh Delivery device for liquids
DE8717117U1 (de) * 1987-12-31 1988-03-03 Katz, Otto, Dipl.-Ing., 8540 Schwabach Dosierdrehstift zur Abgabe fließfähiger Massen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE675237A (fr) * 1966-01-18 1966-05-16
LU75926A1 (fr) * 1976-10-04 1977-05-06
EP0240738A2 (fr) * 1986-03-18 1987-10-14 A.W. Faber- Castell Unternehmensverwaltung GmbH & Co. Dispositif pour appliquer des masses capables de couler
FR2637512A1 (fr) * 1988-10-07 1990-04-13 Lvmh Rech Dispositif de delivrance automatique d'un produit ou d'un objet quelconque

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363990A (en) * 1994-02-25 1994-11-15 Owens-Illinois Closure Inc. Dual chambered pump package for viscous products
WO2010118765A1 (fr) * 2009-04-13 2010-10-21 Karan Dadgar Récipient pour organe d'application
WO2010118764A1 (fr) * 2009-04-13 2010-10-21 Karan Dadgar Appareil de pompage de liquide
EP3575102A1 (fr) * 2018-05-28 2019-12-04 Georg Linz Fabrik moderner Schreibgeräte GmbH & Co. KG Appareil d'application

Also Published As

Publication number Publication date
EP0420047A3 (en) 1991-11-06
DE3931849A1 (de) 1991-04-04

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