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
  • B05C17/01—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
  • B05C17/0133—Nut and bolt advancing mechanism, e.g. threaded piston rods
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
  • A61C5/62—Applicators, e.g. syringes or guns
  • A61C5/64—Applicators, e.g. syringes or guns for multi-component compositions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
  • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
  • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/80—Forming a predetermined ratio of the substances to be mixed
  • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
  • B01F35/831—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows
  • B01F35/8311—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows with means for controlling the motor driving the pumps or the other dispensing mechanisms
• • 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
  • B05C17/00523—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 provided with means to heat the material
  • B05C17/00526—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
  • B05C17/0053—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
• • 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
  • B05C17/00553—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 means allowing the stock of material to consist of at least two different components
• • 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
  • B05C17/00553—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 means allowing the stock of material to consist of at least two different components
  • B05C17/00566—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 means allowing the stock of material to consist of at least two different components with a dynamic mixer in the nozzle
• • 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
  • B05C17/00596—The liquid or other fluent material being supplied from a rigid removable cartridge having no active dispensing means, i.e. the cartridge requiring cooperation with means of the handtool to expel the material
• • 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
  • B05C17/0103—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 with electrically actuated piston or the like
• • 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
  • B05C17/014—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 comprising means for preventing oozing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
  • B01F2101/19—Mixing dentistry compositions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
  • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
• • 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

Definitions

• the invention relates to a drive device of a dosing
• Multicomponent adhesives comprising at least two contiguous cartridge receiving devices for accommodating interchangeable cartridges with individual component components, an expulsion device for simultaneously expelling the components from the cartridges through component outlets by means of ejection pistons immersed in the cartridge receptacle, at least one expulsion piston being threaded; which can produce by a rotation a forward drive of this sprouting piston, and a
• Mixing device which is connected to the component outputs, mixes the expelled material components and discharges mixed.
• a metering and mixing device with the above structure is the subject of European Patent Application 10 196 972.3 of
• This device for mixing a dental impression material.
• This device comprises a designed as a disposable agitator with a base body, which is a mixing chamber, a plurality of separate from each other in the
• the agitator further comprises a stirrer rotatably arranged in the mixing chamber, which is driven by a drive device, on which the agitator is removably held.
• the components of the impression mass are in
• Supply cylinders contain and are inserted by pistons in the mixing chamber and after mixing through the outlet opening in the
• Feed rate of actuators of the piston can be varied so that both the setting time of the impression mass determining ratio of the piston feed speed and the total feed
• EP 0 057 465 A2 WO 201 1/025831 A1, US 2009/0391 13 A1, WO 2008/076941 A1 and EP 1 279 379 A1.
• the invention includes the consideration when driving a metering and mixing device with a self-tapping drive piston
• the idea of providing a gear unit whose Output gear has a matched to the teeth of the Austriebsstange with spindle section toothing includes the idea of providing an engagement element for engaging the sprouting piston on the (in use position) front end of said spout rod.
• generating (in particular a self-tapping) piston is automatically coupled. This happens especially and advantageously only when a predetermined (counter) pressure threshold is exceeded during parallel expulsion (at least) of another component, which takes place by means of a conventional sprouting piston. According to the requirements of many applications, such a spewing of that component, which is expelled with the self-tapping piston, then and as long
• the drive proposed here takes into account in particular the fact that in a metering and mixing device of the type in question, with (at least) one by rotation automatically a forward drive
• the helical spindle portion has a large pitch of the spiral toothing between 45o and 65o, more particularly between 50o and 61 o.
• the engagement element is formed at the end of the Austriebsstange as a polygonal element, Torx- or claw member. It is of course to be ensured that the shape of the engagement element with the shape of a corresponding formation or Anformung on the (in
• the geometric shape of the engagement element and the engagement opening does not necessarily have to be identical.
• the engagement element is corresponding to an engagement device on the sprouting piston
• the spindle-like Austriebsstange consist essentially of steel and the
• Non-ferrous alloy such as brass or bronze or an aluminum alloy, consist, and also in the usually made essentially of plastic spout can possibly be used.
• a metal-made counterpart to the spindle-engaging element is provided in a further embodiment, that the spindle-like Austriebsstange consist essentially of steel and the internally toothed driven gear substantially made of plastic.
• the follower braking element as
• Trailing plastic brake formed Another embodiment is characterized in that the follower brake element is designed as a follower wrap spring housing.
• Embodiment aspects meaningful combining variant is provided that the position marking element is formed by the running of the braking element or attached to this.
• the transmission unit as
• Planetary gear unit (the prime mover) is formed, which includes a primary output gear.
• Next is preferably a switchable
• Output gear is engaged, and includes a further coupling element, which is designed as the internally toothed output gear of the gear unit.
• the gear unit for driving the threaded sprouting piston and at least one further, driven via a rack sprocket piston of another component is formed, and it has a counter-pressure during the expulsion of the other component axially displaceable gear assembly.
• the one coupling element of the switchable coupling device in the axial direction is substantially fixed with respect to the slidable assembly, such that it shifts under the back pressure during discharge of the other component with that assembly. As a result, the first coupling element comes into engagement with the other, firmly arranged with respect to the device housing coupling element.
• Multi-component adhesives having a drive device according to one of the preceding claims, with an integrated electrical
• Fig. 1 is a side view of an inventive
• Fig. 2 is an illustration of the structure of the transmission unit 8 of the application device of FIG. 1, Fig. 3A and 3B perspective views of a
• Fig. 4 is a schematic diagram (in the manner of a perspective
• Fig. 5 is a perspective view of a
• Fig. 6 is a sectional view of an embodiment of
• Fig. 8 is a block diagram of an embodiment of the
• FIGS. 9A and 9B are motor current-time diagrams for explaining two
• Embodiments of a control sequence of the drive control Embodiments of a control sequence of the drive control.
• Fig. 1 shows a side view (in a schematic representation) of an application device 1 according to the invention, wherein as essential
• Components dosing and mixing device 1 A and an associated drive device 1 B and finally a device body 1 C are designated separately.
• the metering and mixing device 1A comprises by way of example two cartridge receiving devices 2 and 3 of different diameter and different length for a tubular bag 2.1 and a solid cartridge 3.1.
• the larger cartridge receiving device 2 is actuated by means of an axially displaceable first drive piston ("linear piston") 16, the is connected to a first drive rod (rack) 4 and is driven by this linearly into the cartridge receiving device 2.
• Cartridge receiving device 2 is, according to the invention by a second drive piston (“rotary piston”) is actuated, which has on the outside a thread extending into the inner wall of the
• the drive unit 1 B comprises a gear unit 8, which has three different drive output sides in a single drive input side. These are on the one hand an output for the linearly advanced rack 4, on the other hand, an output for a second Austriebsstange 5 and finally an output for a likewise rotating drive shaft 10, which operates a rotary mixer 7.
• Cartridge receiving devices 2 and 3 are the output side connected to a cartridge clutch 6, through which also in the
• the construction of such a rotary mixer is known. He has a front mounted Austrie tip 7a, through which the mixed material is finally discharged.
• the gear unit 8 is driven in the embodiment of the dosing and mixing device 1 shown here by means of an electric motor 9.
• a microswitch 12 In the rest of a microswitch 12 is provided, the function of which will be described below.
• the device body 1 C essentially comprises a
• Fig. 2 shows the structure of an embodiment of the transmission unit 8 in more detail; Reference is also made to Fig. 6 and the comments below. It should be noted that the representation of
• the transmission unit 8 comprises a first, with respect to a wall of a
• the displaceable assembly 19 is resiliently supported relative to the device housing 17 with a further spring element 21, which is also referred to as a pressure spring element.
• the first assembly 18 comprises a planetary gear 22, which with a (not shown) drive pinion of Drive motor is engaged, and the output 23 for driving the spindle-like second drive rod (also not shown here) and output wheels for the first spool rod (rack) and the drive shaft of the mixer, which are also not separately designated or shown here.
• (Claw clutch) 24 is provided, which is a respect to the first assembly 28 fixed first coupling element 24a and one with respect to the second
• Assembly 19 stationary second coupling element 24b includes.
• a transmission component 25 accommodated in the second subassembly 19 for driving the first spool rod (rack) will be described below.
• At the first assembly 18 of the microswitch 12 is fixedly mounted, which is structurally configured and positioned so that it is actuated in a predetermined displacement position of the second assembly 19.
• the second assembly 19 relative to the first assembly 18 of the transmission unit 8 by the force of the counter-pressure spring 20 so far moved that the first and second coupling element 24a, 24b of the switchable coupling 24 are disengaged and the second assembly also the Microswitch 12 is not touched.
• the exact rest position of the second assembly 19 is adjusted by suitable selection of the counter-pressure spring 20 and pressure spring 21 in coordination with each other, as well as the response of the storage of the second module when the device is started.
• the ejector piston 16 strikes the end of the filled cartridge 2.1 facing it and builds up due to the viscosity of the cartridge contained therein
• Component B takes place only if the in the cartridge 2.1
• Transmission assembly 19 remains in the opposite to the first assembly 18 shifted initial state until the first sprouting piston 16 meets the end of the only partially filled cartridge. Only at this time, a reaction force is built there, which presses the second assembly 19 to the first assembly 18, hereby closes the switchable coupling 24, whereby the driving force in the second Austriebsstange (spindle) 5 is initiated. Also in this application, therefore, component B is expelled only at the right time.
• 3A and 3B show as an embodiment of the drive of the first push bar (rack) 4 serving transmission components a couplable worm drive 25 in the engaged (Fig.
• the worm drive comprises a worm 25a with toothed shaft, which is mounted in a thrust bearing 25b and driven by a (not shown here) driven gear of the planetary gear.
• the worm 25a With the worm 25a are two worm gears 25c with spiral teeth in engagement, each associated with a dog clutch 25d.
• each a straight-toothed pinion gear 25e is firmly connected, which runs in the engaged state of the clutch 25d with the worm wheel 25c and the
• FIG. 4 shows an alternative realization thereof, taking up the notation in FIG. 1.
• the rack 4 via a
• Spur gear 26 and two worm 27 driven which are pivotally mounted in a slotted guide 28.
• the rack 4 is driven by two engaging directly in their flanks pinion whose axes of rotation are perpendicular to the longitudinal extent of the rack. This drive concept is familiar to the person skilled in the art and therefore will not be described or described in detail here.
• This has at its one end (in the figure on the left) an engagement element 5a, which is designed here as a polygon, for engagement in a corresponding shaped engagement means on the sprouting piston 1 1 (Fig 1), which is a separate part from the Austriebsstange and for example, belong to the cartridge 3.1 and can be supplied with this.
• the opposite end portion 5b of the Austriebsstange 5 has a spiral toothing with a great pitch, which is not a
• Coupling element 24b of the switchable coupling 24 shown in FIG. 2 is firmly connected or integrally formed.
• the Austriebsstange or spindle 5 is mounted on bearings 30. Between the end provided with the engagement element 5a and the spiral-toothed end section 5b, it is designed as a cylindrical axis and carries in this region a follower braking device 31 for generating a minimum braking torque (in the range of 0.5 to 1, 0 Nm), which also permits axial feed idle, ie So in the non-engaging state of the Austriebsstange with the associated Austriebkolben generated.
• the brake element 31 may otherwise serve as a position marker for identifying the axial position of the Austriebsstange in the field of view of an operator or against an optical detection device or carry such a marking element.
• Fig. 6 shows in a sectional view again essential parts of
• the construction is slightly modified with respect to the transmission component 25 outlined in FIG. 2 and FIGS. 3A and 3B; but this is immaterial to the understanding of this aspect of the construction of the drive device.
• FIGS. 7A and 7B show the one already shown in FIG.
• FIG. 7B shows an embodiment of the braking element as a follower
• Fig. 8 shows a block diagram schematically the structure of a sensor and associated control technology of the proposed
• the sensor system includes the on / off switch (“trigger") 13a, which serves primarily as the control element or - in addition to the latter or in sensory replacement thereof - a current detection unit 32 for detecting the motor current of the drive motor 9, the latter via a motor drive 33.
• the drive control unit 14 comprises a sensor signal processing stage 14a, a delay element 14b and a control signal output stage 14c.
• the signals from the microswitch 12, which ultimately contain information about the expulsion of the component A are set in a suitable relationship to data coming from the power-on switch 13a or the current-sensing unit 32 and, finally, information for
• Operating state of the engine include.
• the processing result is in the delay element 14b still a suitable time evaluation (also due to stored algorithms), and as a result, in all operating situations of the control signal output unit 14c
• the current detection unit 32 detects a
• Sensor signal processing unit 14 a whether the motor current remains at 0 to determine whether the power switch was deliberately or accidentally released. If the former is the case, then, at the point E, a signal from the still-pressed microswitch 12 can be processed such that the control signal output unit 14c ultimately outputs a signal causing the return of the motor 9.
• Fig. 9B shows an alternative implementation of a comparable control sequence.
• Transmission assembly 19 migrates back in their maximum distance from the first assembly 18 starting position, hereby the clutch 24 is released and the micro-switch 12 is released. This is a suitable one

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Dentistry (AREA)
• Life Sciences & Earth Sciences (AREA)
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• 2011
  • 2011-12-21 EP EP11194922.8A patent/EP2606986A1/de not_active Withdrawn
• 2012
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