EP3440643B1 - Ausgabemechanismus - Google Patents

Ausgabemechanismus Download PDF

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Publication number
EP3440643B1
EP3440643B1 EP17728912.1A EP17728912A EP3440643B1 EP 3440643 B1 EP3440643 B1 EP 3440643B1 EP 17728912 A EP17728912 A EP 17728912A EP 3440643 B1 EP3440643 B1 EP 3440643B1
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EP
European Patent Office
Prior art keywords
cup
ring
scrolls
dispensing
actuator
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EP17728912.1A
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English (en)
French (fr)
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EP3440643A1 (de
Inventor
John Ella
Tony MCCOY
Philip MOULD
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Lavazza Professional UK Ltd
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Lavazza Professional UK Ltd
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F13/00—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs
    • G07F13/10—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs with associated dispensing of containers, e.g. cups or other articles

Definitions

  • the present invention relates to a cup dispensing mechanism, and to a carousel-type cup dispenser incorporating such a mechanism.
  • In-cup vending systems are based on stacks of disposable cups, each containing a portion of beverage making ingredients in its base.
  • the cups are snap-fitted together in the stack, and the stack is then packaged, stored and transported conveniently by the vending operator.
  • the stack is removed from its packaging and loaded into the dispenser of a vending machine.
  • the machine In response to a vending command, the machine automatically splits a cup from the bottom of the stack and fills it with hot water to form the desired beverage.
  • Most beverage vending machines contain a number of cup stacks, at least one such stack being provided for each beverage supplied by the machine. In such machines, the plurality of cup stacks are usually arranged in a carousel, so that rotating the carousel brings the desired cup stack to a dispensing position.
  • Carousel-type cup dispensers are known, for example, from GB-A-1368208 and WO01/82249 . These particular dispensers use multiple spiral scroll splitters (also called snail cams) for splitting individual cups from the bottoms of the stacks.
  • the scroll splitters (usually four in number) are equally spaced around the perimeter of the cups, and are equally driven by a single servo by means of a rack-and-pinion frame, or a ring-gear mechanism.
  • a carousel-type cup dispenser is also disclosed in GB-A-2404386 .
  • Another example of the prior art is disclosed in US2037751 .
  • a problem with earlier dispensing mechanisms is that the machine can jam or a cup can be broken, or two cups can be dispensed at once. If the machine jams then the machine may be inoperable and requires a service engineer to be called. It is an object of this invention to avoid this problem.
  • a cup dispensing mechanism for dispensing cups from a nested cup stack, comprising a ring and a splitting mechanism for splitting off an individual cup from the base of the stack, wherein the ring is rotatable from a first position to a second position to drive the splitting mechanism and at least initiate the splitting of a cup from the base of the stack, and characterised in that the dispensing mechanism further comprises a means for preventing free rotation of the ring from the first position in the direction of the second position.
  • the cup dispensing mechanism may further comprise an actuator for rotating the ring from the first position to the second position, wherein the actuator is configured to exert a force which overcomes the resistance of the means for preventing free rotation of the ring.
  • the means for preventing free rotation of the ring may comprise a detent, preferably wherein said detent is located on a frame which at least partially surrounds said ring.
  • the means for preventing free rotation of the ring may further comprise a projection extending from the ring, wherein the projection is arranged to engage the detent to prevent free rotation of the ring.
  • the ring and projection may have a stiffness, whereby the ring deforms resiliently when the projection passes over the detent as the ring is rotated.
  • the projection and the ring may be a moulded unitary part.
  • the projection may extend outwardly from the ring in the plane of the ring.
  • the actuator may be a motorised actuator.
  • the splitting mechanism may comprise at least one cup splitting scroll, the or each scroll comprising a wedge-shaped projection for splitting a cup from the base of the stack as the scroll is rotated.
  • the splitting mechanism may comprise four or more cup splitting scrolls defining a cup dispensing aperture, wherein each scroll comprises a wedge-shaped projection for splitting a cup from the base of the stack as the scroll is rotated.
  • the or each scroll may further comprise a support ledge located below the top of the wedge projection and radially spaced from the wedge projection for supporting the bottom cup of a stack before operation of the scroll to split the cup from the base of the stack.
  • the or each scroll may be positioned such that a bottom cup of a stack of cups will rest on the support ledges when the stack of cups is located on the dispensing mechanism.
  • the or each scroll may be positioned such that the wedge projections extend into a position for at least initiating the splitting of a cup from the base of the stack.
  • the ring may be a ring gear, preferably adapted to drive the or each scroll.
  • a region of the radially outer surface of the ring gear may be toothed for engagement with gear teeth on the scrolls.
  • cup dispenser comprising two or more of the cup dispensing mechanisms as defined herein.
  • a cup dispenser comprising a plurality of the dispensing mechanisms for dispensing cups from a corresponding plurality of nested cup stacks, each said mechanism comprising four or more cup splitting scrolls defining a cup dispensing aperture, wherein adjacent dispensing mechanisms are closely spaced in the dispenser such that the smallest distance between adjacent cup dispensing apertures is about 25mm or less.
  • cup dispensing aperture refers to the imaginary circle having a radius equal to the maximum radius of the cups to be dispensed, through which the cups drop when dispensed by the mechanism.
  • the mechanism will, of course, normally comprise and actual aperture of slightly greater size through which the cups drop, for example the aperture in the center of the drive ring described below.
  • the above distance of 25mm or less is measured between the closest points on the cup dispensing aperture.
  • the distance is 20mm or less, more preferably 16mm or less, and most preferably 12mm or less.
  • each of the dispensing mechanisms comprises two outer scrolls positioned on a first half of a perimeter of a cup dispensing aperture, the two outer scrolls being spaced apart from each other by a first distance, and two inner scrolls positioned on a second half of the aperture, spaced apart from each other by a second distance, wherein the second distance is less than the first distance.
  • cup dispensing mechanisms when positioned around apertures of a circular carousel, to be arranged closer to each neighbouring cup dispensing mechanism around the carousel. This will permit a smaller carousel for a given number of stacks, or a larger number of stacks in a standard carousel.
  • each scroll has an outermost diameter of less than 32mm, more preferably less than 30mm. Most preferably, the scrolls have an outermost diameter of about 28mm to about 29mm.
  • spiral refers to a spiral cam or snail cam, that is to say a substantially cylindrical body mounted on a substantially vertical cylinder axis about which it can rotate, and having on an outer surface thereof a wedge-shaped projection (i.e. wedge-shaped when viewed in plan developments of the scroll surface) extending partially around the cylinder, typically from about 150 to about 300 degrees, preferably about 160 to about 200 degrees around the cylinder.
  • the wedge-shaped projection is configured for insertion between and abutment against both the top surface of the lip (i.e. rim) of a bottom cup in the stack and the bottom surface of the lip of the next adjacent cup in the stack, so as to split the bottom cup from the stack as the cam is rotated.
  • the vertical spacing (known as the cup pitch) between successive cups in the stack may vary, for example from about 5mm to about 20mm.
  • the wedge-shaped projection has sufficient length to split cups having a cup pitch anywhere in this range. It will be appreciated that the wedge-shaped projection may be hollow or interrupted without loss of function.
  • the wedge preferably comprises a substantially horizontal top surface and a substantially helical bottom surface.
  • the wedge angle (helix angle) between the bottom surface and the horizontal may be constant. However, in certain preferred embodiments, the angle of the wedge may not be constant.
  • the wedge may have a cup splitting region with a relatively lower angle (say 18° to 22°, preferably about 21°) to provide maximum effectiveness in breaking the snap fitting between cups, followed by a relatively higher angle region (say 30° to 45°) to push the bottom cup away against friction and suction forces after the snap fitting has been broken.
  • the relatively lower angle region extends from about 100 to about 230 degrees around the cylinder, preferably about 120 to about 180 degrees around the cylinder in order to provide effective splitting of cup stacks having a wide range of cup pitches.
  • the relatively higher angle region extends from about 10 to about 30 degrees around the cylinder, preferably about 20 degrees around the cylinder in order to provide rapid separation of the bottom cup.
  • the wedge may additionally comprise a second relatively higher angle region (say 30° to 45°) adjacent to the leading tip of the wedge, to minimize the length of the wedge that does not engage with the cups.
  • the second relatively higher angle region extends from about 5 to about 25 degrees around the cylinder, preferably about 10 degrees around the cylinder.
  • the wedge has a mean angle over its whole length of less than 25°. More preferably, the mean angle is from 20° to 23°.
  • the scrolls further comprise a support detent located below the top of the wedge projection and radially spaced from the wedge projection for supporting the bottom cup of the stack before operation of the scroll to split the cup from the stack, i.e. between dispensing operations.
  • the support detent is typically a radially extending ledge for abutment under the lip of the bottom cup.
  • cup guides are placed between one or more of the scrolls where the scrolls are spaced apart.
  • the cup guides are normally positioned and dimensioned to abut the outside of the lip of at least the bottom cup (or preferably at least the bottom 2 or 3 cups) of the stack while the bottom cup is being split from the stack by the scrolls.
  • the cup guides have abutment surfaces lying on the cup dispensing aperture to guide the cup dispensing.
  • the cup guides may be fixed, or may be able to rotate, but in any case they define a fixed radius substantially equal to the maximum radius of the cups to reduce rocking or squeezing of the cups in the stack during splitting and during feeding of the cups after splitting. This prevents cups from slipping past the scrolls. Slipping past the scrolls would constitute a misfeed.
  • the cup guides are substantially vertical posts, preferably cylindrical posts, which may be rotatable. In other embodiments, the cup guides are fixed wall sections having curved internal surfaces that are radiused to match the outside radius of the cup stack. Preferably one or more cup guides are positioned around the perimeter of the cup dispensing aperture between the outer scrolls. Preferably one or more cup guides are positioned around the perimeter of the cup dispensing aperture between each outer scroll and its neighbouring inner scroll.
  • the scrolls for dispensing a given cup stack are all driven by a single drive member, preferably a ring gear, which preferably is permanently mounted to the scrolls.
  • the radially inner surface of the ring gear may then define part of the aperture through which the cups drop as they are dispensed by the mechanism.
  • the radially outer surface of the ring gear is toothed for engagement with the scrolls.
  • the gear teeth do not extend all around outer surface of the gear ring. Instead, a region of the gear ring between the inner and outer scrolls is substantially free of teeth so as to enable the cup splitters to be packed more closely together around the carousel without contact between the gear teeth on adjacent ring gears.
  • the cup dispenser according to the present invention is a carousel-type cup dispenser. That is to say, it comprises a plurality of cup dispensing mechanisms radially spaced around a carousel axis.
  • the dispensing mechanisms are fixed in relation to each other, but rotatable around the carousel axis.
  • the dispensing mechanisms may be located at fixed locations around the periphery of a rotatable circular base plate of the dispenser.
  • the mechanisms are located adjacent the bottom of each cup stack station of the carousel. Preferably there are at least twelve, more preferably at least sixteen cup stack stations on the carousel, still more preferably at least eighteen cup stack stations on the carousel.
  • the four scrolls of each mechanism are preferably driven by a ring gear.
  • the ring gear may be driven by a servo through an idler gear, for example as described in WO01/82249 .
  • the ring gear has a cam thereon, and the cam is selectively operable by an actuator positioned outside or inside the carousel.
  • the cam-driven ring gear provides the advantages that a single actuator, not mounted to the carousel, can be used to drive the mechanism on any stack - it is not necessary to have a separate driver for each stack splitting mechanism.
  • a further advantage is that the actuator can be arranged so that it does not block the rotation of the carousel that is needed to bring different stacks to the dispensing location.
  • the actuator preferably drives the cam in a reciprocating movement from a storage position (in which the bottom cup of the stack is supported by the support detent on the scroll as described above), to a dispensed position (in which the bottom cup has been dispensed and the next cup in the stack is supported on the top of the wedge projection), and back to the storage position (in which the previously next cup is now the bottom cup supported on the support detent).
  • the cam projection is situated between the outer scrolls, and the cam actuator will then be situated radially outside the carousel.
  • the cam projection is situated between the inner scrolls, in which case the cam actuator may be situated radially inside the carousel, and the cam projection will normally be situated above or below the plane of the scroll splitters in order to remain clear of the inner scrolls.
  • cam-driven mechanisms for rotating the scrolls different from the ring gear, for example a belt-driven mechanism, could be contemplated within the scope of the present invention.
  • the manner in which the actuator rotates the ring gear results in a degree of lateral force being translated through to the cup splitting mechanisms. This effect is more evident when overcoming a high cup interlock force.
  • the mechanism and system according to the present invention preferably further comprises one or more locking features operatively associated with the actuator to block or restrict lateral movement of the cup splitting mechanism while the cup is being split from the stack.
  • lateral movement refers to relative movement of the actuator and the cup dispensing mechanism in the plane of the cup dispensing aperture i.e. horizontal. It may comprise movement in the direction of the actuator motion (y-axis movement), and/or movement of the cup splitting mechanism towards or away from the actuator (x-axis movement).
  • a locking feature is provided by abutment between an outer surface of the actuator and a locking surface of the cup splitting mechanism.
  • the actuator may comprise an outer surface, such as a drive ring surface, wherein the outer surface abuts a complementary surface on the cup splitting mechanism or carousel adjacent to the actuator while cup splitting is taking place. This provides y-direction locking throughout the cup split in addition to a degree of actuator/base alignment.
  • a locking element mounted on, or driven by, the cup splitting actuator engages with a complementary locking element on the cup splitting mechanism to provide both x- and y-direction control only when the cup splitting is taking place.
  • the locking element may comprise a projection (z-direction) on the actuator mechanism that is rotated into engagement with a complementary recess on the cup splitting mechanism or the carousel when the actuator is driven to the cup splitting position.
  • a cam on the actuator may drive a locking arm into engagement with a suitable recess on the cup splitting mechanism or the carousel when the actuator is driven to the cup splitting position.
  • the embodiment comprises four identical scrolls 18, 20 rotatably mounted between a base plate 16 and a top plate 12 around apertures 22 in the base plate and the top plate large enough to allow passage of the desired cups.
  • the top plate and the base plate 12,16 are held in fixed, spaced, parallel relation by posts 14.
  • the top plate 12 and the base plate 16 are trapezium shaped in plan for insertion into a carousel as will be seen below.
  • Two of the scrolls are outer scrolls 18 and two of the scrolls are inner scrolls 20.
  • the four scrolls 18,20 are positioned so that a selected in-cup vending drinks cup, for example a KLIX (Registered Trade Mark) cup, for dispensing by the cup dispensing mechanism, will fit between, but will not fall past, the scrolls without activation of the cup dispensing mechanism.
  • KLIX cups have tapered conical sides with an outside diameter just below the lip of 69mm, and a lip extending outwardly about 2mm from the sides. Cups having different diameters will require the scrolls 18,20 to be spaced around a differently sized imaginary circle. A skilled person will be able to determine the appropriate size of that circle for a particular cup size by simple experimentation. In fact, the scrolls could be adjustably mounted on the base plate 16 for use with differently sized cups.
  • the ideal positions for the scrolls is such that the cups will dispense, one at a time, from the stack when using the scrolls but without misfeeds.
  • Figure 1 shows the scrolls in a non-dispensing or storage orientation. In this orientation, support ledges 43 provided on each of the scrolls 18, 20 would support the rim of the bottom cup if a stack of cups were to be placed between the scrolls 18, 20.
  • the two inner scrolls 20 are positioned closer together than the two outer scrolls 18. It can thus be seen that the four scrolls are positioned at the corners of a trapezium.
  • the angles of the trapezium are optimized for close packing of the mechanisms in a carousel, wherein the axis of symmetry of the trapezium lies along a radius of the carousel.
  • the internal angle of the trapezium for a carousel having n stacks is desirably 90 + (180/n) degrees, i.e. 100° for an 18-stack carousel.
  • each scroll 18, 20 has a gear teeth 28 at its base.
  • the teeth 28 engage with teeth of a ring gear 30 that is coaxial with, the imaginary circle on which the scrolls are located.
  • the ring gear 30 has a radially inner surface defining a circular aperture 32, also larger than the maximum cup diameter, for allowing a cup to pass therethrough without resistance.
  • the radially outside surface of the ring gear 30 comprises teeth for engaging with the gear teeth 28 of the scrolls.
  • the radially inner surface of the ring gear 30 is smooth.
  • the teeth are only provided as required in the vicinity of the scrolls.
  • the region of the ring gear between the inner and outer scrolls is free of projecting teeth. This region is where the ring gears on adjacent dispensing mechanisms approach most closely together, and the elimination of gear teeth in these regions enables closer packing of the mechanisms without interference between gear teeth on adjacent gear rings.
  • the four scrolls 18,20 each are rotatable about their axes, all of which axes are parallel to the axis of the cup stack and the ring gear 30.
  • the ring gear 30 is rotatable about its axis. Rotation of the ring gear 30 causes the four scrolls 18,20 all to rotate simultaneously.
  • the ring gear 30 has a cam 34 for engaging with an actuator 36 (shown in Figure 3 ) for actuating the cup dispensing mechanism by rotation of the ring gear 30 and therefore the four scrolls 18, 20.
  • the cam 34 is situated between the two outer, more widely spaced scroll splitters 18.
  • the scroll has the gear teeth 28 proximate its base.
  • the remaining part of the scroll 18,20 is generally cylindrical. However it has a wedge shaped projection 42 extending approximately 240° around its sidewall and a cup rim support ledge 43 extending approximately 120° around the sidewall.
  • the wedge shaped projection has a substantially flat top surface and an inclined bottom surface 44.
  • the wedge comprises a first region 47 proximate to the tip 46, extending about 11° radially, and having a pitch angle of about 31°. This is the initial lead-in region that does not encounter the bottom cup in use.
  • the wedge comprises a second region extending about 146° radially and having a pitch angle of about 21°. This is the region of the wedge that engages between the bottom cup and adjacent cup of the stack to break the interlock between the cups. The length of this region enables the scroll to be used to split relatively widely spaced (large cup stack pitch) cups.
  • the wedge comprises a third region extending about 14° radially and having a pitch angle of about 38°, to overcome frictional and suction resistance to release of the bottom cup from the stack following breaking of the interlock. Finally, the wedge comprises a fourth region of zero pitch. In this region, the bottom cup of the stack has fallen away and the next cup of the stack is resting on the flat top surface of the wedge.
  • the cup rim support ledge 43 has a level top surface for supporting the bottom cup of a stack prior to operation of the splitting mechanism to split the cup.
  • the mechanism further comprises cup guides 48 fixed to, and depending from the top plate 12.
  • the cup guides 48 prevent cups from distorting, rocking or falling past the scrolls 18, 20 when the scrolls 18, 20 are rotated.
  • the cup guides are positioned to allow undistorted cups to drop freely through the dispenser, but to restrict or prevent distortion or rocking of the cup stack that could cause a misfeed.
  • the cup guides 48 are approximately equi-spaced between the scrolls 18, 20. By equally spacing the cup guides 48 between the scrolls 18, 20, they will tend to support the cups as they are fed or split from the stack of cups. The cups, therefore, when being separated by the scrolls from the stack of cups, will be well supported. This further prevents misfeeds.
  • FIG. 3 a mechanism similar to that of Figs. 1 and 2 is shown with the scrolls 18, 20 in a dispensed state together with an actuator 36 in a disengaged position.
  • the actuator would be located outside the circumference of the carousel into which the splitting mechanism is fitted.
  • a rim 37 of a cup resting on the top of the wedge projections of the scrolls 18, 20. The dispensed cup will have fallen away below it.
  • the actuator 36 comprises a disc having a recess therein.
  • the recess defines a pair of radial surfaces 38,40.
  • the first radial surface 38 of the actuator 36 upon rotating anti-clockwise, will engage with the cam 34 of the ring gear 30. This will cause the ring gear 30 to rotate clockwise. This will, in turn, cause the four scrolls 18,20 to rotate anti-clockwise, thereby driving the wedge projection between lip of the bottom cup and the lip of the next adjacent cup of the stack to split the bottom cup from the stack.
  • the scrolls rotate anti-clockwise by up to 300° from their non-dispensing orientation.
  • the scrolls will rotate by about 290°. Any more than 360° of rotation could cause a second cup to start to be dispensed. This, of course, is undesirable. Therefore a known rotation stop mechanism is provided to prevent such rotation.
  • the scrolls 18, 20 and the cam 34 are in the orientation shown in Figure 3 .
  • the next cup on the stack is resting on the top of the wedge projection on the scrolls.
  • the actuator 36 is then rotated backwards, i.e. clockwise, so that the second radial surface 40 of the actuator 36 engages the cam 34 of the ring gear 30 to return the ring gear 30 from its actuated position shown in Figure 3 to its reset position shown in Figure 1 .
  • This causes the next cup on the stack to drop down onto the support detent 43, ready for dispensing.
  • the actuator 36 can be returned to its disengaged position as shown in Fig.3 .
  • the embodiment of Figure 3 has a radiused surface 45 that abuts against an outside surface 46 of the actuator 36 while the actuator 36 is engaged with the cam 34, thereby helping to reduce relative movement between the cup splitting mechanism and the actuator 36.
  • the disengaged position for the actuator 36 is such that the outermost tips of the first and second radial surfaces 38,40 do not extend into the carousel base plate 10. This allows the carousel to be rotated for selecting a particular stack of cups for dispensing a cup therefrom.
  • the carousel dispenser comprises a carousel having 16 cup stack stations, each cup stack station having proximate its base its own mechanism comprising a set of four scrolls 18,20 as described above in relation to Figs. 1 , 2 or 3 .
  • Shaped ribs 50 are provided extending upwardly from the base plate, as is conventional in the art, for entraining the stacks of cups upon inserting them into the carousel.
  • the scrolls are arranged non equi-spaced, the cup stack stations can be located circumferentially closer together than in previous carousels.
  • Each cup stack station may, for example, comprise cups containing different dry ingredients - e.g. for tea, coffee, chocolate or soup.
  • the illustrated embodiment has an actuator 52 located inside a carousel 54 of cup splitting mechanisms similar to that described in relation to Fig. 4 .
  • the actuator 52 is situated inside the carousel, and drives a cam projection (not shown) that is located between and below the two innermost scroll splitters 56, 58 of the cup splitting mechanism on the carousel 54.
  • the actuator 52 operates in generally the same fashion as the actuator 36 shown in Figure 3 .
  • the actuator 52 has the additional feature of upwardly projecting cylindrical wall section 60 that is received into a slot 62 in the inside wall of the carousel 54 when the actuator 52 is engaged with the cam projection on the cup splitting mechanism. This engagement between the wall section 60 on the actuator and the slot 62 in the carousel substantially prevents relative movement between the actuator 52 and the carousel 54, in particular radial movement of the carousel away from the actuator 52.
  • Figure 6 shows an alternative view of the embodiment of Figure 5 , to illustrate a further mechanism for locking the relative position of the actuator 52 and the carousel 54 when the actuator 52 is engaging the cam on the cup splitting mechanism.
  • the further locking means comprises a locking peg 64 linked to a tracking pin 66 that is received in a tracking slot 68 extending around the actuator, whereby the tracking pin 66 and the tracking slot 68 are in a tracked cam engagement, whereby rotation of the actuator to a position where the actuator is engaged with the cam on the cup splitting mechanism causes the pin and slot 66, 68 to lift the locking peg 64 into engagement with a complementary socket (not shown) on the carousel to prevent relative movement of the actuator and the carousel in X or Y directions while the actuator is engaged with the cam on the splitting mechanism.
  • a detent 70 is provided on a frame 74 which at least partially surrounds the ring or ring gear 30.
  • the ring gear 30 comprises a projection 72 extending outwardly from the ring in the plane of the ring, wherein the projection 72 is arranged to engage the detent 70 to prevent free rotation of the ring.
  • the detent 70 is fixed in position on the frame 74.
  • the detent 70 does not deform in operation.
  • the ring gear 30 and its projection 72 have a stiffness, whereby the ring deforms resiliently when the projection passes over the detent as the ring is rotated.
  • the ring gear 30 deforms from a circular to an oval shape as the projection 72 passes over the detent 70.
  • the detent 70 has a rounded edge 76 and the projection 72 has a rounded edge 78 to ease the passing of the detent 70 and the projection 72 past each other.
  • the projection 72 and the ring gear 30 are a moulded unitary part, preferably made from plastic.
  • Figure 7 shows a lever 134 extending from the ring gear 30 for engaging with an actuator, for example the actuator 36 shown in figure 3 , for actuating the cup dispensing mechanism by rotation of the ring gear 30 and therefore the four scrolls 18, 20.
  • the lever 134 is situated between the two inner, more closely spaced scroll splitters 20.
  • the cup splitting scrolls 18, 20 shown in figure 7 define a cup dispensing aperture, wherein each scroll comprising a wedge-shaped projection 42 for splitting a cup from the base of the stack as the scroll is rotated.
  • the scrolls further comprise a support ledge 43 located below the top of the wedge projection 42 and radially spaced from the wedge projection 42 for supporting the bottom cup of a stack before operation of the scroll to split the cup from the base of the stack.
  • the outer surface of the ring gear 30 has teeth 33 for engaging with corresponding teeth 26 on the scrolls whereby rotation of the ring gear causes rotation of the scrolls.
  • the scrolls When the cups are loaded into a machine, the scrolls are located in a first position, which may be a non-dispensing or storage orientation, as shown in figure 10 .
  • the detent 70 will engage the projection 72 extending from the ring gear 30 to prevent free rotation of the ring gear 30 in a direction which would move the scrolls to initiate the splitting of a cup from the base of the stack. This prevents the person loading the machine from inadvertently causing the scrolls to rotate as they load the cups into position.
  • the force required to move the ring gear 30 from the first position is greater than the force that can be transmitted via the friction between the scrolls and the cup rim.
  • the bottom cup of the stack is supported on the support ledges 43 of the scrolls by its projecting top lip.
  • the actuator engages the lever 134, and exerts a force which overcomes the resistance of the means for preventing free rotation of the ring.
  • the actuator drives the ring gear 30 and the projection 72 passes over the detent 70.
  • the ring gear 30 deforms from a circular to an oval shape as the projection passes over the detent.
  • the ring gear 30 is resilient and reverts to its original circular shape after the projection has passed over the detent.
  • the actuator is a motorised actuator.
  • the motor force of the actuator is greater than the resistance to rotation resulting from the engagement of the detent 70 and the projection 72.
  • the detent only increases the load seen by the motor of the actuator when moving the ring gear 30 from or to the first position, and the detent and projection do not increase the load over the rest of the splitting cycle.
  • Figure 11 shows the ring gear 30 after the projection 72 has passed over the detent 70.
  • the arrow 80 indicates the direction of rotation of the ring.
  • the actuator 36 continues to rotate the ring gear 30 clockwise. This will cause the four scrolls 18,20 to rotate anti-clockwise, thereby driving the wedge projection 42 between lip of the bottom cup and the lip of the next adjacent cup of the stack to split the bottom cup from the stack.
  • the next cup on the stack is resting on the top of the wedge projection on the scrolls.
  • the ring gear 30 is then rotated anticlockwise by the actuator, opposite the direction of arrow 80, to return the ring gear 30 from its actuated position to the first position shown in figure 10 . This causes the next cup on the stack to drop down onto the support ledges 43, ready for dispensing.
  • the detent 70 will engage the projection 72 as the ring is rotated anticlockwise back to the first position.
  • the actuator drives the ring gear 30 and the projection 72 passes over the detent.
  • the means for preventing free rotation of the ring may instead comprise a sprung peg extending from the frame 174 which at least partially surrounds the ring gear 30.
  • Figure 12 shows the peg 170 supported within the frame 174. The peg is biased towards the ring gear 30 by a spring 172.
  • the ring gear 30 comprises a hollow 178 having raised sides 182. The rounded outer surface of the peg 170 is located in the hollow 178 when the ring gear 30 is located in the first position. This prevents free rotation of the ring gear in the direction of the second position, indicated by arrow 180, since the peg 170 must be lifted out of the hollow against the force of the spring to rotate the ring away from the first position.
  • Figure 13 shows a further alternative means for preventing free rotation of the ring gear 30.
  • the means for preventing free rotation of the ring gear 30 may instead comprise a raised friction surface 272 located on the ring gear 30.
  • the frame 274 which at least partially surrounds the ring gear 30 also has a raised friction surface 270.
  • the two friction surfaces 270, 272 engage with each other when the ring is in the first position to prevent free rotation of the ring from the first position in the direction of the second position, indicated by arrow 280, since the friction between the two surfaces 270, 272 must be overcome to rotate the ring away from the first position.

Claims (14)

  1. Becherspendemechanismus zum Spenden von Bechern von einem ineinandergeschachtelten Becherstapel, der einen Ring (30) und einen Abtrennmechanismus zum Abtrennen eines einzelnen Bechers vom unteren Ende des Stapels umfasst, wobei der Ring (30) von einer ersten Position in eine zweite Position drehbar ist, um den Abtrennmechanismus anzutreiben und das Abtrennen eines Bechers vom unteren Ende des Stapels zumindest einzuleiten, und dadurch gekennzeichnet, dass der Spendemechanismus ferner ein Mittel zum Verhindern einer freien Drehung des Rings (30) von der ersten Position in Richtung der zweiten Position umfasst, wobei das Mittel zum Verhindern einer freien Drehung des Rings eine Arretierung (70), die an einem Rahmen (74) angeordnet ist, der den genannten Ring (30) zumindest teilweise umgibt, und einen Vorsprung (72) umfasst, der sich von dem Ring (30) erstreckt, wobei der Vorsprung (72) zum Eingreifen in die Arretierung (70) ausgelegt ist, um eine freie Drehung des Rings (30) zu verhindern, und dadurch, dass der Ring (30) und der Vorsprung (72) eine Steifigkeit aufweisen, wodurch sich der Ring (30) elastisch verformt, wenn der Vorsprung (72) beim Drehen des Rings (30) über die Arretierung (70) läuft.
  2. Becherspendemechanismus nach Anspruch 1, der ferner ein Stellglied (36) zum Drehen des Rings (30) von der ersten Position in die zweite Position umfasst, wobei das Stellglied (36) so konfiguriert ist, dass es eine Kraft ausübt, die den Widerstand des Mittels zum Verhindern einer freien Drehung des Rings (30) überwindet.
  3. Becherspendemechanismus nach Anspruch 2, wobei das Stellglied (36) ein motorisiertes Stellglied ist.
  4. Becherspendemechanismus nach einem vorherigen Anspruch, wobei der Vorsprung (72) und der Ring (30) ein einstückiges Formteil sind.
  5. Becherspendemechanismus nach einem vorherigen Anspruch, wobei sich der Vorsprung (72) von dem Ring (30) in der Ebene des Rings (30) nach außen erstreckt.
  6. Becherspendemechanismus nach einem vorherigen Anspruch, wobei der Abtrennmechanismus mindestens eine Becherabtrennschnecke (18) umfasst, wobei die oder jede Schnecke einen keilförmigen Vorsprung (42) zum Abtrennen eines Bechers vom unteren Ende des Stapels beim Drehen der Schnecke (18) aufweist.
  7. Becherspendemechanismus nach Anspruch 6, wobei die oder jede Schnecke (18) ferner eine Stützleiste (43) umfasst, die sich unterhalb der Oberseite des keilförmigen Vorsprungs (42) befindet und radial von dem keilförmigen Vorsprung (42) beabstandet ist, um den untersten Becher eines Stapels vor der Betätigung der Schnecke (18) zu stützen, um den Becher vom unteren Ende des Stapels abzutrennen, wobei in der ersten Position die oder jede Schnecke (18) so positioniert ist, dass ein unterster Becher eines Becherstapels auf den Stützleisten (43) ruht, wenn sich der Becherstapel auf dem Spendemechanismus befindet.
  8. Becherspender, der zwei oder mehr der Becherspendemechanismen wie in den vorherigen Ansprüchen definiert umfasst.
  9. Becherspender, der eine Mehrzahl von Becherspendemechanismen wie in einem der vorherigen Ansprüche definiert zum Spenden von Bechern aus einer entsprechenden Mehrzahl von ineinandergeschachtelten Becherstapeln umfasst, wobei jeder genannte Mechanismus vier oder mehr Becherabtrennschnecken (18), (20) umfasst, die eine kreisförmige Becherspendeöffnung definieren, und wobei benachbarte Spendemechanismen in dem Spender eng beabstandet sind, so dass der kleinste Abstand zwischen benachbarten Becherspendeöffnungen etwa 25 mm oder weniger beträgt.
  10. Becherspendemechanismus nach Anspruch 9, wobei jeder Becherspendemechanismus zwei äußere Becherabtrennschnecken (18), die auf einer ersten Hälfte eines Umfangs der Becherspendeöffnung positioniert sind, wobei die beiden äußeren Schnecken (18) um eine erste Distanz voneinander beabstandet sind, und zwei innere Becherabtrennschnecken (20) umfasst, die auf einer zweiten Hälfte der Öffnung um eine zweite Distanz voneinander beabstandet positioniert sind, wobei die zweite Distanz geringer ist als die erste Distanz, wobei die innere und die äußere Schnecke (18), (20) im Wesentlichen an den Ecken eines Trapezes positioniert sind, das die genannte Becherspendeöffnung umgibt.
  11. Becherspender nach Anspruch 9 oder 10, wobei jeder Spendemechanismus einen Zahnkranz (30) umfasst, der zum Antreiben der Schnecken (18, 20) dieses Spendemechanismus geeignet ist.
  12. Becherspender nach Anspruch 11, wobei ein Bereich der radial äußeren Fläche des Zahnkranzes (30) für den Eingriff mit Zahnradzähnen (28) an den Schnecken (18, 20) gezahnt ist und ein anderer Bereich der radial äußeren Fläche des Zahnkranzes (30) zwischen den Schnecken (18, 20) im Wesentlichen zahnfrei ist, um zu ermöglichen, dass die Becherabtrenner ohne Kontakt mit den Zahnradzähnen an benachbarten Zahnkränzen enger aneinander gepackt werden können.
  13. Becherspender nach Anspruch 11 oder 12, wobei jeder Zahnkranz (30) mit einem Nockenvorsprung (34) versehen ist, wobei das Bewegen des Nockenvorsprungs (34) von einer ersten Position in eine zweite Position das Spenden eines einzelnen Bechers antreibt, ferner umfassend ein Nockenstellglied (36), ausgelegt zum Hin- und Herbewegen des Nockenvorsprungs (34) zwischen der ersten und der zweiten Position, wobei das Nockenstellglied (36) ein einzelnes Nockenstellglied an einer festen Stelle in dem Spender ist, um das Abtrennen eines Bechers von einer Mehrzahl von Becherabtrennern (18) anzutreiben, und ein oder mehrere Verriegelungsmerkmale, die operativ mit dem Nockenstellglied (36) assoziiert sind, um eine seitliche Bewegung des Becherabtrennmechanismus in der Ebene der Becherspendeöffnung zu blockieren oder einzuschränken, während ein Becher von dem Stapel abgetrennt wird.
  14. Becherspender nach einem der Ansprüche 9 bis 13, der ein karussellartiger Becherspender ist, bei dem die Schnecken (18, 20) jedes Mechanismus durch einen Zahnkranz (30) angetrieben werden, wobei sich auf jedem der Zahnkränze (30) eine Nocke (34) befindet, und die Nocken (34) auf einer Mehrzahl der genannten Mechanismen selektiv durch ein einzelnes Stellglied (36) betätigt werden können, das außerhalb oder innerhalb des Karussells positioniert ist, und wobei sich die Nocke (34) und das Stellglied (36) oberhalb oder unterhalb der Ebene des Zahnkranzes (30) befindet, um Überfüllung in der Ebene des Zahnkranzes (30) zu verringern.
EP17728912.1A 2016-04-06 2017-04-06 Ausgabemechanismus Active EP3440643B1 (de)

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PCT/GB2017/050964 WO2017174992A1 (en) 2016-04-06 2017-04-06 Dispensing mechanism

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EP3440643B1 true EP3440643B1 (de) 2022-07-20

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RU2727979C1 (ru) * 2017-10-19 2020-07-28 Эвока С.П.А. Устройство для выдачи предметов из стопки вложенных друг в друга предметов, в частности крышек стаканчиков
IT201800006044A1 (it) * 2018-06-05 2019-12-05 Distributore di articoli da una pila di articoli annidati, in particolare coperchi per bicchieri
IT201800007021A1 (it) * 2018-07-09 2020-01-09 Dispositivo di sgancio per distributori
CN109377659A (zh) * 2018-08-31 2019-02-22 深圳市道中创新科技有限公司 自动落杯/落盖机构及现冲饮品售卖机
WO2021116662A1 (en) * 2019-12-12 2021-06-17 Lavazza Professional Uk Limited Beverage vending machine, cup dispensing assembly therefor, and related methods

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US2037751A (en) * 1933-06-05 1936-04-21 Vortex Cup Co Dispenser
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GB913384A (en) * 1960-08-04 1962-12-19 Automatic Canteen Co Cup dispenser
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