[0001] The present invention relates to a machine from the type of those known as vending
machines, planned for dispensing loose products, preferably titbits, and, at the same
time, weighing the dispensed product.
[0002] The aim of the invention is to simplify the operations made for buying titbits, with
no need of buying the product and, after that, weighing it, as it happens now.
[0003] Although the machine is planned specially for its use in dispensing and weighing
titbits, it is not dismissed for vending or dispensing any other small loose product,
such as screws, buttons or dried fruits.
STATE OF THE ART.-
[0004] As it is known, there are many titbit shops and other loose products on which each
product is housed on a container with a lateral or superior tilting trap door, through
which the consumer takes the wanted product by acting over the trap door or through
a ladle that takes the products directly from the container. In both cases, not only
the consumer has to go to different containers for buying different products, but
after that he has to go to the checkout, where the products are weighted and charged.
[0005] This method, that is the most common nowadays, means nuisances, wastes of time and
some other troubles for the consumer. Also, the shop needs an employee for weighing
and charging the products.
[0006] By other side, there exist vending machines that dispense loose products like the
ones related, but dispensing is made into bags so the consumer does not have the chance
of buying the precise wanted amount, so he has to buy the weight contained on the
bag.
[0007] Anyway, vending machines including dispensing and weighing means for loose products
are not known.
THE INVENTION.-
[0008] The present invention has been conceived in order to solve the problems previously
shown. It is made from a common wardrobe, with a numerical selector, an information
display, a coin slot, one container for each product, a display cabinet and an outlet
for the product. The special feature in this invention is a special system for dispensing
containers, as well as a jig with a receiving hopper for each product, combined with
a scale that is part of the jig. The machine also includes an automatic bagging system
for the products sold, single or united, as ordered by the costumer.
[0009] Specifically, the invention presents, as first innovation feature, the inclusion
of a series of containers housing different products, made of clear-plastic cylindrical
tubes, resting on different pairs of rollers. Those cylindrical tubes include an internally
secured spring, that is activated from its base by an engine that works when coins
are inserted and costumer pushes the selector. There is another engine in order to
activate a frontal open-and-close door on the container, so that on its closed position
it prevents product's outlet, and on its opened position the product outlets when
the cylindrical tube turns. Close to the outlet, there is a pair of semi-disks. One
of them is fixed, and the other is revolving, so the outlet can be regulated according
to the product or its quantity. There is also a fixed pivot combined with the pair
of semi-disks.
[0010] Optionally, and depending on the kind of product, there may be installed on container's
bottom a disruptive pendulum, in order to avoid the products being stuck on the cylindrical
tube.
[0011] The second innovation feature in this invention is a positioning system for the hopper
that receives the product from the containers, as well as a dispensing system from
the hopper to the outlet.
[0012] The positioning system consists of a transversal and frontal guide, movable in ascending
and descending direction, while it is combined through pulleys and cables with some
reels located above it. Those reels are activated by an engine so that when the engine
works, depending on turning direction, the guide is moved vertically up and down.
Due to that movement, hopper is moved too. Hopper is not only moved ascending and
descending, but it is also moved sideways by a tilting movement in order to fix exactly
with the containers. There is also another sideways movement to the opposite side,
in order to empty the hopper into the outlet receptacle.
[0013] Since it is evident, the hopper is movable through a rail so it can be placed, depending
on customer's selection, close to the cylindrical container's outlet that contains
the product selected by the customer. The hopper is emptied out by tilting it over.
A weighing cell is also placed in the rail.
[0014] The third innovation feature is the bagging system. It is made by a bag container,
with a cylindrical-squared shape. Bags are inside it, and it also has a curved front
in order to allow a tilting movement. There is also a movable suction plate placed
close to top of bag's pile, so that those bags are individually removed by suction.
The movable suction plate is linked with a pipe that takes the bags from movable suction
plate to a stationary vertical suction plate. The movable plate has a pinion that
engages with two racks. The first one is above it, and it allows suction plate's movement
of descent when it is in front of the bag's container. The other rack allows the frontal
movement when suction plate is in opposite to vertical plate. In this case, a valve
is activated through a crankshaft so that it allows suction, and both sheets of the
bags are separated. One of the sheets is stuck on suction plate's bellows, and the
other is stuck on vertical plate, so that the bag is opened. The product is placed
into the bag by the hopper and, when suction ends, the bag falls by gravity with the
product inside. There is a trapdoor manually-opened to remove the bag together with
the dispensed product.
[0015] Moving and tilting movements of the movable plate are made by an engine with a pinion
and a rack. When it works, the plate is moved back and forward. When the pinion reaches
some of the rack's stretches, plate tilts in order to absorb bags from pile and to
free them when filled . The freeing action takes place when plate is in front of product
container's outlet.
Plans and Drawings.-
[0016] In order to complement the description, and to reach a better understanding of the
invention according to the preferential manufacturing process, some drawings are added
to this document.
Figure 1 .- It shows a frontal representation of the automatic machine, made according to the
aim of the invention.
Figure 2.- It shows a cross - section side view of one of the cylindrical tubes that constitute
a container, resting on the lower rollers.
Figure 3.- It shows a frontal view of the cylinders represented on the previous figure, as
well as the lower rollers that support each container.
Figure 4.- It shows a general perspective of the rollers, specifically four couples to support
four containers, with the planned elements for activating each cylinder.
Figure 5.- It shows a frontal detail of the displacement system for the hopper that receives
the products from the different containers. On the outlet can be seen the rack's stretch
on which the pinion engages and tilts the hopper. Also has been drawn, in the stretch
previously refered, the position of the hopper when it is starting the unloading.
Figure 6.- It shows a lateral view of the hopper with the mechanisms that allow the tilting
movement, the pinion, the rail with the weighing cell and their assembly over the
hook. This figure also shows the tilting movement of the hopper when it is being positioned
close to the container's outlet.
Figure 7.- It shows a schematic view of the automatic bagging system, where all its elements
can be seen.
Figure 8.- It shows a floor plan of the bag container, as well as the movable suction plate
with its bellows. Those bellows extract the bags one by one. It can also be seen the
internally secured pinion that moves the suction plate.
Figures 9 to 13 .- They shows different moments of the automatic bagging system when it is working.
PREFERENTIAL MANUFACTURING PROCESS FOR THE INVENTION.
[0017] As seen in the previous figures, this automatic machine for weighing and dispensing
loose products is a vending machine constituted by a rectangular wardrobe (1) with
a display cabinet of containers (2) , containers for the products, a numerical selector
(3), an information display (4), a coin slot (5) and an outlet (6) for the dispensed
product.
[0018] From this features, it has been foreseen that containers must be made, on each case,
by a cylindrical tube as shown on figure 2, on which interior is an internally secured
spring so that containers (2) are supported by couples of rolling rollers, assisted
by a frame (9). There is also an engine (10) in order to activate container's turn(2).
This engine (10) has an activating element (11) coupled on a notch (12) made on the
base (13) of each cylinder (2). Close to each cylinder's outlet there has been foreseen
a regulator that allows or prevents product's exit depending on its thickness. That
regulator consists of two semi-disks (14 & 14'). The first one is fixed and the other
turns partially for closing the outlet according to product's thickness. A pivot (15)
has been also foreseen.
[0019] Each cylinder or container (2) turns independently according to customer's choice.
Cylinder's (2) outlet has a gate (16) activated by an engine (17) that closes it when
the product is dispensed.
[0020] Products leave cylinders (2) by a tilting hopper (18) that slides on a rail (19)
over a straight guide (20), as clearly seen in figure number 4, so that on guide's
end where hopper (18) has to empty there is a rack (21) which function will be explained
later.
[0021] Over the rail (19) there is a weighing cell (22) that weighs product contained on
the hopper (18); the hopper has a hinge (23) that allows its movement until it fits
container's outlet (2)in order to receive dispensed product without leaks. The movement
is provided by an engine (24) that, through a crankshaft, pushes the hopper's bottom
(18), moving it, as explained before.
[0022] At the end of the crankshaft (25) there is a pinion (26) that engages with the rack
(21) when hopper (18) is close to that part of the rack (21). There is also a hinge
(27) that allows the hopper (18) to be moved into its unloading position when it reaches
the end of the rack (21) because, as it has been told before, the hopper (18), according
to the product chosen by the numerical selector (3), will turn and move until it is
positioned close to container's (2) outlet of the chosen product for gathering it.
After that, hopper is moved towards the rack's end (21), and there it is moved again
by the gear made between the pinion (26) and the rack (21) in order to empty product
previously received from the hopper (18).
[0023] Hopper's vertical displacements, it is to say, in ascending and descending sense,
are made through lateral cables (28) that are connected with pulleys (29) united with
the guide (20) through which hopper (18) is moved, and reels (30) above it, so that
those pulleys (29) slide through round guides (31) situated vertically in both wardrobe's
sides (1). That movement is in ascending and descending sense on the guide (20) and,
therefore, in the same sense that hopper's movement. That movement is activated by
an engine (32) that activates reel's axle (30) on which cables (28) are coiled.
[0024] In recounted to automatic bagging system, represented on figures 8 & 9, it is constituted
by a suction plate (33) with bellows (34) that tilts around a pint of joint (36) with
regard to the joint with a flexible tube (37), that is part of the suction system,
connected through a pipe (38) with suction engine (39), including an axis of joint
(36) and an internally secured pinion (40), which function will be explained later.
[0025] From the connection between flexible tube (37) and pipe (38), another pipe (38')
is established. It ends on a stationary vertical plate (57) situated above the outlet
receptacle (41) where outlet (6) is situated. In that receptacle, a tilting door (42)
with counterweight (43) has been planned.
[0026] Stationary vertical plate (57) is activated by a valve associated with an arm (45).
[0027] This system also includes a guide (46) that, combined with a rack (47), directs suction
plate's (33) movements. It is made by an engine (48) with a pinion (49) that engages
with rack (47). There are also different stretches on the rack: on its end (50) and
another one (50') above it and movable to opposite end.
OPERATION WAY
[0028] When money is inserted through coin slot (5), customer pushes a button in the numerical
selector (3) according to wanted product. Each button in numerical selector matches
with a different container (2), so that customer will push the button in the numerical
selector (3) until wanted amount is obtained. It is necessary to bear in mind that,
when selector (3) is pushed, the hopper (18) that receives the selected product will
be moved until fixing with container's outlet. Dispensing is made through container's
(2) turn, that dispends the product slowly until customer stops pushing numerical
selector (3) or available money runs out.
[0029] Obviously, costumer is able to select different products with the same amount of
money by pushing different buttons in the selector (3) so that the hopper (18) will
receive those products, keeping in mind that, after each different selection, customer
is informed by information display (4) about the amount selected in grams and the
remaining money.
[0030] When there is no money left, received product on the hopper (18) falls to outlet
receptacle (41), where previously a bag (51) has been situated. Hopper is emptied
by its tilting movement when it moves to rack's (21) area that engages with the pinion
(26), generating that tilting movement around the hinge (27).
[0031] Under movable suction plate (33) it is situated a container (52) for bags (51), that
have to be suctioned by that plate (33). That container (52) has a rectangular curved
shape on its frontal part (52'), fixing with suction plate's (33) brim. There are
also serrated strips (53) combined with small springs (54) in order to avoid bags
sticking between themselves.
[0032] Container (52) also has a back wall (55) with a buffer (56) for bag (51) pilling
up. That wall (55) is able to tilt in order to let its projection towards out so that
bags (51) are loaded inside container (52), pilled for their individual extraction.
[0033] According to suction system previously described, automatic bagging system is as
detailed:
Beginning from the position drawn in figure number 9, when machine starts working,
suction engine (39) is activated, and an order is given to movable suction plate (33)
so that it moves backward and tilts down. Then, bellows (34) absorb first bag (51)
of the pile contained on container (52). Bellows (34) adapt themselves according to
bags remaining on the container. Bags are extracted from their frontal part, as shown
on figure number 9.
[0034] Simultaneously, pinion (40) from aspiration plate engages with rack (50') and produces
a tilting movement on movable plate (33) until it stands in half-vertical position,
as shown on figure number 10. That set advances, due to the engage between pinion
and rack (47), to the opposite side, as shown on figure number 10.
[0035] When movable suction plate (33) gets the position shown on figure number 11, its
pinion (40) engages with the rack (50), producing a tilting ahead movement so that
movable plate (33) is opposite to stationary suction plate (40). Simultaneously, the
arm (45) starts its movement, activating the valve (44) and opening it so that plate
(40) aspirates the other side of the bag (51), opening it, as shown on figure number
12.
[0036] On this moment, suction machine (39) stops working and movable suction plate (33)
moves back, letting bag (51) to fall filled with its content, as shown on figure number
13, into outlet receptacle (41). Then, costumer opens the trap door (42) and takes
the bag (51) with the product inside. Simultaneously, movable suction plate keeps
on moving until reaching rack's area (50'); then it engages with the pinion (40),
producing a tilting towards ahead and downwards movement so that it is ready to start
again the bag-suction process. That is the start position as shown on figure number
9.
1. Automatic machine for weighing and dispensing loose products, specially foreseen for
dispensing titbits or other loose products, such as screws, buttons, or dried fruits,
constituted by a wardrobe (1) with a display cabinet of containers (2) on its interior
and, on its frontal side, a numerical selector (3), an information display (4), a
coin slot (5) and an outlet (6) for the dispensed product, being characterized essentially this vending machine because it has dispenser containers (2) supported
by couples of rollers (8) that allow those containers (2) to roll individually when
they are activated by their respective engines (10) and having each one of the containers
(2) an internally secured spring (7) for sweeping away the product, when container
(2) rolls, downwards to the outlet, where a closing door (16) activated by an engine
(17) has been foreseen, and having also a regulation system on the outlet depending
on product's thickness. It also has a placing system for the hopper (18) that receives
products dispensed by containers (2); that hopper (18) is movable horizontally and
vertically in order to fix with container's outlet, and it is also able to tilt in
both senses in order to empty out the product contained inside, being foreseen an
automatic bagging system constituted by a movable suction plate (33) that tilts downwards
and upwards in order to absorb bags (51) individually from a container (52) and to
locate them in front of a stationary vertical suction plate (40) which is above an
outlet receptacle (41) that receives the bag (51) with the product inside, once it
has been dispensed by hopper (18), and all that combined with a suction engine (39)
connected through a pipe (38) with a flexible tube (37) which is connected with the
suction plate, as well as with another pipe (38') connected with the stationary vertical
suction plate (40).
2. Automatic machine for weighing and dispensing loose products, according to the first
claim, wherein containers (2) have on their back side a basis (13) with a notch (12)
where an activating element (11) activated by the engine (10) is located, in order
to execute container's (2) turn.
3. Automatic machine for weighing and dispensing loose products, according to claims
number 1 and 2, wherein regulation system for container's (2) outlet is constituted
by a pair of semi-disks, one of which is stationary and the other is movable, so that
turning in one sense or the opposite means that outlet opens or closes, all combined
with a fitting pivot (15) foreseen on container's (2) outlet.
4. Automatic machine for weighing and dispensing loose products, according to the first
claim, wherein hopper (18) that receives products dispensed by containers (2) is assembled
with a guide (20) that allows its axial movement; on guide's (20) ends have been foreseen
both pulleys through which cross lateral cables (28) that move vertically and which
cross also both reels (30) situated above them and which are assembled on a common
rail which is activated by an engine (32) that coils and unwinds those cables (28)
and, at the same time, moves above and below the guide (20) united with the hopper
(18), so that those movements, combined with hopper's (18) linear movements through
guide (20), make possible hopper (18) to locate under container's (2) outlet, which
product has been previously selected by pushing the numerical selector (3).
5. Automatic machine for weighing and dispensing loose products, according to claims
number 1 & 4, wherein hopper (18) moves across guide (20) over a rail (19) over which
is situated a weighing cell (22) for weighing the product, with a hinge (23) foreseen
in one of its ends for hopper's (18) tilting movement to container's (2) outlet, and
another hinge (27) on the opposite end, combined with a pinion (26) that engages with
a rack (21) situated on guide's (20) end, in order to make possible hopper's (18)
tilting movement that unloads the product contained on it on the outlet receptacle
(41).
6. Automatic machine for weighing and dispensing loose products, according to the first
claim, wherein suction plate's (33) bellows'(34) movement is made trough a guide (46)
combined with a rack (47) that engages with a pinion (49) activated by an engine (48),
capable of engaging with a rack (50') in order to tilt towards ahead suction plate
(33)and insert its bellows (34) into a container (52) that contains bags (51) so that
those bags are absorbed individually, and another tilt up movement so that, on its
movement through the guide (46), bag (51) is moved by suction plate (33)from container
(52) to stationary vertical plate (40); so that vertical plate's (40) activation by
a valve (44) makes that the other sheet of the bag (51) is absorbed, opening it and
receiving product coming from the hopper (18).
7. Automatic machine for weighing and dispensing loose products, according to sixth claim,
wherein valve's (44) activation is made by an arm (45) activated by suction plate
(33) when pinion (49) engages with rack (50) on stationary vertical plate's (40) end.
8. Automatic machine for weighing and dispensing loose products, according to sixth claim,
wherein bag (51) container (52) has a rectangular curved shape on its frontal side
(52') fixing with suction plate's (33) brim. On its internal side, there are also
serrated strips (53) combined with small springs (54) in order to avoid that bags
(51) stick between themselves. It has also been foreseen that bag container (52) needs
a tilting wall (55) in order to put bags (51) inside it, being that wall (55) able
to tilt in order to allow bag's (51) introduction and pilling up them.
Amended claims under Art. 19.1 PCT
1. Automatic machine for weighing and dispensing loose products, specially foreseen for
dispensing titbits or other loose products, such as screws, buttons, or dried fruits,
constituted by a wardrobe (1) with a display cabinet of containers (2) on its interior
and, on its frontal side, a numerical selector (3), an information display (4), a
coin slot (5) and an outlet (6) for the dispensed product, being characterized this vending machine because it has cylindrical dispenser containers (2) supported
by couples of rollers (8), being those containers (2) allowed to roll individually
when they are activated by their respective engines (10) and having each one of them
an internally secured spring (7) for sweeping away the product, when container (2)
rolls to outlet, where a closing door (16) activated by an engine (17) has been foreseen,
a placing system for the hopper (18) that receives product dispensed from the containers
(2), which is movable horizontally and vertically to fix with container's outlet,
on which the hopper (18), with faculty to move axially is assembled over a guide (20)
in order to move across it over a rail (19), above which a weighing cell (22) is situated,
in order to weigh the products, and an automatic bagging system constituted by a bag-suction
plate (33), with a suction pad (34) on its upper end, and a stationary vertical suction
plate (40) assembled above a receptacle (41) that receives bags (51) when product
is dispensed, all that combined with a suction engine (39), connected through a pipe
(38) with a flexible tube (37) that connects with the suction plate (33), and also
with another pipe (38') that connects with the stationary vertical plate (40).
2. Automatic machine for weighing and dispensing loose products, according to the first
claim, wherein containers (2) have on their back side a basis (13) with a notch (12)
where an activating element (11) activated by the engine (10) is located, in order
to execute container's (2) turn.
3. Automatic machine for weighing and dispensing loose products, according to claims
number one and two, characterized because rotary containers (2) have assembled close to their exit a regulation system,
constituted by a pair of semi-disks (14 and 14'). One of them is fixed and the other
one is manually movable around the rotation axle on which first one is fixed, so that
movable-semi-disk's turning movement in one or other direction means a bigger or smaller
open in container's outlet, fitting selected product's thickness, all that combined
with a fixed but adjustable pivot (15). Pivot is able to be adjusted on its position
inside and out, that is to say, up on its end when it's inside the tube, or down on
its external end, opposite to container's outlet, in order to facilitate product's
separation while they are being dispensed.
4. Automatic machine for weighing and dispensing loose products, according to first claim,
characterized because linear guide (20), assembled horizontally and vertically, on which hopper
(18) that receives expended product from containers (2) is assembled, has both pulleys
on its ends, through which cross lateral cables (28) that move vertically and which
cross also both reels (30) situated above them and which are assembled on a common
rail which is activated by an engine (32) that coils and unwinds those cables (28)
and, at the same time, moves above and below the guide (20) united with the hopper
(18), so that those movements, combined with hopper's (18) linear movements through
guide (20), make possible hopper (18) to locate under container's (2) outlet, which
product has been previously selected by pushing the numerical selector (3) .
5. Automatic machine for weighing and dispensing loose products, according to fourth
claim, wherein hopper (18) is able to make a tilting movement due to a hinge (23)
foreseen in one of its ends for hopper's (18) tilting movement to container's (2)
outlet, and another hinge (27) on the opposite end, combined with a pinion (26) that
engages with a rack (21) situated on guide's (20) end, in order to make possible hopper's
(18) tilting movement that unloads the product contained on it on the outlet receptacle
(41).
6. Automatic machine for weighing and dispensing loose products, according to first claim,
wherein bag's suction plate (33) with suction pad (34) on its top side, has an up-and-down
tilting movement, which movement is made through a guide (46) combined with a rack
(47) that engages with a pinion (49) activated by an engine (48), capable of engaging
with a rack (50') in order to tilt downwards suction plate (33)and insert its suction
pad (34) into a container (52) that contains bags (51) so that those bags are absorbed
individually, and another tilting movement upwards, so that, on its movement through
the guide (46), bag (51) is moved by suction plate (33) to stationary vertical plate
(40); so that vertical plate's (40) activation by a valve (44) makes that the other
sheet of the bag (51) is absorbed, opening it and receiving product coming from the
hopper (18) when it has tilting movement.
7. Automatic machine for weighing and dispensing loose products, according to sixth claim,
wherein valve's (44) activation is made by an arm (45) activated by suction plate
(33) when pinion (49) engages with rack (50) on stationary vertical plate's (40) end.
8. Automatic machine for weighing and dispensing loose products, according to sixth claim,
wherein bag (51) container (52) has a rectangular curved shape on its frontal side
(52') fixing with suction plate's (33) brim. On its internal side, there are also
serrated strips (53) combined with small springs (54) in order to avoid that bags
(51) stick between themselves. It has also been foreseen that bag container (52) needs
a tilting wall (55) in order to put bags (51) inside it, being that wall (55) able
to tilt in order to allow bag's (51) introduction and pilling up them.
In order to rectify lack of clarity defects in the composition of claims for mentioned
international application, as pointed out on the International Search Report, following
modifications are included:
First claim has been simplified and specifies the three main features that define the invention:
dispensing containers system, hopper positioning system, including weighing scale,
and bagging system, excluding from this claim additional features which are described
in other claims that depend on this one.
Therefore, in this main claim, page 17, on hopper positioning system's description
has been included the mechanism that allows the weighing of the product, which was
previously defined on claim number five, from 28th line, as "...on which the hopper, with faculty to move axially, is assembled over
a guide in order to move across it over a rail , above which a weighing cell is situated,
in order to weigh the products", and, from 33rd line, suction pad as mentioned on 6th claim is defined as "...bag-suction plate, with a suction pad on its upper end";
on the contrary, following sentences have been excluded: lines 22 to 24 "...and having
also a regulation system on the outlet depending on product's thickness.", lines 28
to 31 "...that hopper is movable horizontally and vertically in order to fix with
container's outlet, and it is also able to tilt in both senses in order to empty out
the product contained inside", and lines 32nd to 3rd on page 18 "that tilts downwards and upwards in order to absorb bags (51) individually
from a container (52)"; those sentences have been included into 3rd, 5th and 6th claims respectively. In this first claim it has also been specified container's cylindrical
feature.
It has been made a new composition for third claim, on which "regulation system for container's outlet" is better explained than previously.
It is a restricting device constituted by two semi-disks and a fitting pivot situated
opposite to the gap between those semi-disks, as described on pages 3 (lines 26 to
32) and 9 (lines 25-34).
It has also been made a new composition for the beginning of 4th claim, appropriate to the new description included on first claim, from which depends
on, about the linear guide over which hopper is assembled.
5th claim depends now just on 4th one, excluding from it the device by which hopper with weighing cell moves lengthwise
for receiving and weighing products, that now is part of first claim, but including
on this 5th claim hopper's tilting movement, initially foreseen for first claim.
Finally, on 6th claim it has been clarified the expression "...suction plate's bellows' movement" as it
has been defined that bellow on first claim as "...bag-suction plate, with a suction
pad on its upper end" (page 19, 32nd line) and specifying that suction plate, besides its movement trough the guide, has
a downwards-and-upwards tilting movement, as can be deduced from what has been initially
put forward on, at the beginning on the same 6th claim an during the description (page 5, line 24 and following ones, page 8, line
21, page 11, line 29 and following ones, and page 13, lines 29 to 33).