BR112020011852B1 - APPARATUS, MEASUREMENT INSTALLATION, AND METHOD FOR MEASURING COMPOUND INGREDIENTS - Google Patents

Abstract

A measuring apparatus (1) for measuring compound ingredients, in particular for tires, comprising a storage container (2), a plug body (15) housed in an outlet opening (11) of the storage container (2 ), a stirrer (27) and at least one scraping surface (R1), for example counter-shaped in relation to a spherical plug surface (16) of the plug body (15). According to a measuring method, it is provided to at least partially open the outlet opening (11) and measure the weight of the ingredient collected at a collection station (35) to control the angular position of the plug body (15 ) as a function of the weight of the ingredient collected at the collection station (35).

Description

[001] The present invention relates to an apparatus for measuring compound ingredients, in particular for tires, preferably operated by gravity, and to a method for measuring compound ingredients, in particular for tires.

[002] The present invention also relates to a measuring valve and a measuring installation.

[003] The term “parallel” must be understood within the limits of tolerances, for example, with a variation of +/- 20 degrees in relation to a perfectly parallel orientation. Furthermore, the term “parallel” used in reference to a straight line and a flat surface indicates both the possibility that the straight line is at a constant distance from the flat surface and the possibility that the straight line lies on the flat surface. .

[004] The term “transverse” refers to a perpendicular or oblique arrangement between two physical or geometric elements. The term “perpendicular” must be understood within the limits of tolerances, for example, with a variation of +/- 20 degrees in relation to a perfectly perpendicular orientation.

[005] Terms expressed in ordinal numbers, such as, for example, “first”, “second”, “third” do not imply the need for a sequence or a functional correlation between the elements indicated in this way. Therefore, each element can be provided independently of the others, for example, a third engine member can be provided also in the absence of a first engine member and/or a second engine member.

[006] The expression “a surface arranged in the vicinity of the exit opening” means a surface placed at a distance from the exit opening so as to influence the passage of the ingredient through it. Preferably, such a surface is located at a distance from the outlet opening, in particular along a direction transverse to the outlet opening, not greater than twice the width, preferably the diameter, of the outlet opening. Even more preferably, such a surface is located at a distance from the outlet opening, in particular, along a direction transverse to the outlet opening, not greater than the width, preferably the diameter, of the outlet opening.

[007] In reference to the tire production process, it begins with the preparation of compounds adapted to produce each tire component based on the specific recipe required. Each compound is prepared in a special rotor mixer, known under the trade name “Banbury”, into which the respective ingredients, for example consisting of elastomers and additives, are introduced.

[008] The ingredients are preliminarily measured into their respective bags, according to the specific recipe required. Measuring occurs in installations in which an operator manually loads the bag into a collection container that is produced to translate along a loading line, stopping at one or more measuring stations that comprise measuring drills or vibration channels to collect the measured ingredient into the bag.

[009] Once loaded, the bag is collected manually by the operator who provides sealing for it to transfer to the rotor mixer.

[0010] Considering possible production variations, it is necessary to manage a large number of ingredients (for example, thirty ingredients) that differ, not only in composition, but also in physical characteristics. In fact, the ingredients used in the tire industry can be in different forms, such as powders, flakes, pellets, high viscosity liquids (e.g. oils). Only the great variability in the way in which the different ingredients needed to produce a tire can be seen as requiring the use of different measuring stations (drills, vibration channels) for different types of ingredients to this day. Some of these measuring stations have a very long measuring time, slowing down the entire system and requiring manual management with the presence of an operator to load/unload the bag.

[0011] The Applicant noted that measurement systems used in this way are not capable of simultaneously complying with conflicting requirements, such as reducing overall measurement times and increasing the accuracy and quality of the measurement itself. Furthermore, Applicant noted that known systems disperse some of the ingredients into the environment.

[0012] In addition to the above, the Applicant noted that the measurement systems used in this way are not very versatile in managing variations related to the quantity of the ingredient to be measured and/or different formats or batches of the ingredients to be measured and/or environmental variations that may affect the physical characteristics of the ingredients to be measured. This insufficient versatility is even more significant if measurement accuracy and quality must remain constant despite possible variations, or even increases. These aspects, to date, require that each measuring station is necessarily dedicated to a single ingredient and that the same measuring installation has different types of measuring stations, depending on the ingredient to be measured, preventing common management that contributes to reconciling the previously mentioned conflicting demands.

[0013] Document US4130268 describes a rotary valve for powder and granular materials comprising a body and a valve member which, in the closed position, is arranged with a concave inner surface facing towards the flow of material and which, in the open position , is rotated to allow the material to pass through an opening in it. The convex outer surface of the valve member maintains a seal with the valve body, as it is not subject to wear and is not in contact with the powder material. The rotary valve described in document US4130268 is used in pneumatic powder material conveying systems.

[0014] Document WO2015/063473 describes an isolation valve for powder transport systems. A rotary closing element is shaped as a spherical housing and a pneumatic seal can be activated against the rotating closing element.

[0015] Document US2004/0079767 describes a dispensing device for a granular material comprising a rotating cylindrical rotor provided with an inner tube produced with two elbow sections. The rotor can be replaced to adapt to different types of materials and particle sizes. A rack system rotates the rotor to dispense a set amount of material.

[0016] Additional known valves have cleaning systems dedicated to the parts most susceptible to wear, such as the outlet opening sealing ring, and/or cleaning nozzles activated outside the measuring range.

[0017] The Applicant realized that the precision and quality with which the measurement of ingredients is carried out represent parameters capable of affecting the quality of the mixtures and, therefore, of the final product, in particular, of the vulcanized tire. The Applicant has verified that the systems described in documents US4130268 and WO2015/063473 are implemented to optimize the transport, for example pneumatic, of materials and therefore do not deal with problems related to measurement reliability. The Applicant has also realized that measurement accuracy and quality can represent an aspect of criticality, since it is possible that any problems at the measurement stage, i.e. in the first stage of production, for example of a tire, arise only at the end of the production process, for example, after checks carried out on the vulcanized tire.

[0018] In the Applicant's perception, by intervening in some parameters that influence the measurement, for example, as a function of the weight of the collected ingredient and/or defining a universal geometry adaptable to any type of ingredients, as is suitable for the automated and in-operation cleaning of moving parts, it is possible to combine the previously mentioned conflicting requirements to reduce measuring time as well and, above all, for large quantities, to increase measuring accuracy and obtain the required quality that avoids any contamination.

[0019] The Applicant, therefore, found that by managing the rotary opening/closing movement of a plug body as a function of the amount of ingredient collected and/or providing suitable geometries adapted to optionally allow for Preferably, a rotary scraping movement of the shutter body during the measuring process, it is possible to obtain accuracy of the order of 1% also for collected material weights of the order of a few tens of kg, reducing the measurement time to a time of the order of 30'', thus being compatible with automatic bag management, reducing dispersions in the environment and increasing the quality of the measured ingredient, avoiding possible contaminations and allowing the management of any type of ingredients, including viscous and/or in form of already prepared mixtures, for example, mixtures consisting of powders and/or grains dispersed in an oily matrix.

[0020] More precisely, according to a first aspect, the present invention relates to a measuring apparatus for measuring compound ingredients, in particular for tires, preferably operated by gravity.

[0021] Preferably, the measuring apparatus comprises a storage container delimiting an internal volume adapted to receive a compound ingredient, in particular for tires.

[0022] Preferably, said storage container has an inlet opening and an outlet opening.

[0023] Preferably, said outlet opening is arranged in a bottom of said storage container.

[0024] Preferably, said exit opening has a circular shape.

[0025] Preferably, a shutter body is housed in said outlet opening, which rotates around a shutter geometric axis.

[0026] Preferably, said geometric axis of rotation is parallel to said exit opening.

[0027] Preferably, said plug body has a plug surface that has a convex profile facing towards said internal volume. Preferably, the plug body has a spherical plug surface.

[0028] Preferably, an ingredient collection station is arranged at the outlet opening to collect material from said outlet opening. Preferably, an ingredient collection station is arranged below said outlet opening.

[0029] Preferably, said collection station comprises a measuring device configured to generate a measuring signal indicative of the quantity of ingredient collected.

[0030] Preferably, a first motor member is operatively connected to said plug body in order to cause rotation thereof around the plug axis between an angular closing position in which said preferably spherical shutter surface is arranged to completely close the outlet opening and an open angular position in which said outlet opening is at least partially open on an open surface.

[0031] Preferably, a control unit is operatively connected to at least the measuring device and the first motor member and is configured to receive said at least one measuring signal and to generate, as a function of the amount of ingredient collected at the collection station, a first control signal directed to the first motor member and adapted to control the degree of opening of the outlet opening.

[0032] The Applicant believes that the selection of, preferably, spherical convex shape of the plug body and the presence of motor members controlled based on the quantity (weight) of ingredient collected at the collection station allow for effective, rapid measurement and with very high precision any type of ingredient for compounds, in particular, tires, regardless of the form in which it occurs (dust, scales, drops, tablets, pellets, oils...) and environmental conditions.

[0033] The geometry of the plug body allows effective cleaning if necessary, which can also be activated during measurement and can be automated due to the fact that the plug body rotates in the same space as the outlet opening and due to the fact that the use of a mobile scraper device is possible, which can be activated in the area occupied by the shutter body itself.

[0034] Said scraper device, if present, can be activated both during measurement, in continuous or pulsed mode, or during the interval between two or more consecutive measurement operations or during periodic maintenance without having to disassemble the valve, simplifying, thus, maintaining it and limiting machine downtime.

[0035] The mode and frequency of activation of the scraper device may depend, among other things, on the viscosity of the material and/or mixture to be measured.

[0036] Furthermore, the previously mentioned measuring device allows to reduce loading time and dispersion of the ingredient in the environment and is, therefore, suitable for use in an automated system.

[0037] According to a second aspect, the present invention relates to a measuring valve.

[0038] Preferably, the measuring valve comprises a housing defining a passage opening and a plug body disposed in said passage opening.

[0039] Preferably, said obturator body is shaped as a portion of a sphere having a center disposed on a obturator geometric axis of said obturator body. Preferably, said shutter geometric axis is parallel to said passage opening. Preferably, said shutter geometric axis is displaced with respect to said passage opening.

[0040] Preferably, said sphere portion is delimited by a spherical obturator surface having the same radius as said sphere and convex profile adapted to face towards an ingredient to be measured. Preferably, said sphere portion is delimited by a passing surface that cuts said sphere at a single edge that delimits the spherical plug surface and the passing surface.

[0041] Preferably, said plug body is rotating about said plug geometric axis between a closed angular position in which said spherical plug surface is arranged to completely close the passage opening and an open angular position in which said passage opening is at least partially open on said passage surface on an open surface.

[0042] Preferably, the passage surface comprises a first portion that defines a plane parallel to the shutter geometric axis.

[0043] Preferably, the passage surface comprises a second portion that defines a second plane parallel to the shutter geometric axis.

[0044] Preferably, the second portion intersects the first portion.

[0045] The Applicant believes that by providing a plug body having a conformation according to a portion of a sphere, preferably with a convex profile facing the ingredient to be measured, and with a flat passing surface disposed in said position it is possible to regulate the output of the ingredient by dividing the passage opening with different geometries according to the quantity (weight) of the ingredient collected at the collection station. In particular, the plug body may be shaped in such a way as to divide the passage opening according to a circular segment at least in angular positions close to an angular closing position thereof to obtain both a rapid exit of the ingredient at the maximum position angular opening and a high degree of precision when closing the measuring valve. This conformation can also possibly be adapted to cooperate with a mobile and automatable scraping device to obtain a high level of valve cleanliness and allows it to be used with any type of ingredient.

[0046] According to a third aspect thereof, the present invention relates to a method for measuring compound ingredients, in particular for tires.

[0047] Preferably, an ingredient for compounds, in particular for tires, is disposed in a storage container that has an outlet opening leading to an ingredient collection station. Preferably, said outlet opening has a circular shape. Said outlet opening houses a plug body rotating around a plug axis preferably parallel to said outlet opening and preferably having a spherical plug surface, preferably having a profile convex facing towards said internal volume.

[0048] Preferably, said outlet opening is at least partially open in order to allow passage of the ingredient from the storage container to the collection station through an open surface of the outlet opening.

[0049] Preferably, the quantity of the ingredient collected at the collection station is measured.

[0050] Preferably, the degree of opening of the outlet opening is controlled as a function of the amount of ingredient collected at the collection station.

[0051] The Applicant believes that controlling the opening of the, preferably, spherical obturator surface that has a convex profile facing the internal volume allows measurement effectively, quickly, with high precision and using the same type of device measurement, of any type of compound ingredients, in particular, tires, regardless of their form (dust, scales, drops, pellets, ...) and environmental conditions. Furthermore, the previously mentioned method is adapted to be automated, which makes it possible to reduce loading time and dispersion of the ingredient in the environment.

[0052] According to a fourth aspect, the present invention relates to a measuring installation comprising a plurality of measuring devices.

[0053] Preferably, each of said measuring devices is dedicated to a specific ingredient or an already prepared mixture. Preferably, said measuring devices are arranged so as to dispose each outlet opening at a certain height relative to a support surface and define a collection path extending between an inlet and an outlet. Preferably, at least said collection station is mobile along the collection path.

[0054] In one or more of the above aspects, the present invention may comprise one or more of the following features.

[0055] Preferably, a scraping device is disposed within said internal volume and has at least one scraping surface configured and movable for scraping a surface of the measuring device disposed in the vicinity of the exit opening. Preferably, said scraping surface is rotatable around a geometric axis of rotation, preferably transverse, to said outlet or passage opening.

[0056] Preferably, said at least one scraping surface is counter-shaped in relation to said, preferably, spherical plug surface and/or a scraping ring delimiting the outlet or passage opening and/or internal surfaces of the storage container disposed in the vicinity of said outlet or passage opening.

[0057] Preferably, a plurality of scraping surfaces distributed around the geometric axis of rotation is provided. Even more preferably, at least four scraping surfaces are provided, even more preferably at least six scraping surfaces distributed around the geometric axis of rotation. Preferably, the number of scraping surfaces is such that it covers a total surface comprised between 5% and 30% (four flaps), preferably 15% and 45% (six flaps) of the preferred spherical plug surface.

[0058] The Applicant believes that this aspect provides a universal measuring device, adaptable to any type of ingredient (powders, granular or viscous materials) and to possible mixtures of ingredients even of different types, controlling the parameters that influence precision and the most effective measurement time.

[0059] Preferably, said at least one scraping surface has a plurality of scraping portions. Even more preferably, at least one scraping portion is configured to be set in motion, preferably rotating, independently of the remaining scraping portions.

[0060] Preferably, said scraping surface and, in particular, a first scraping portion of the scraping surface, is counter-shaped with respect to said, preferably spherical plug surface and is activatable in at least one portion of a preferably spherical lid defined by said preferably spherical plug surface when disposed in the angular closing position.

[0061] Preferably, said first scraping portion is implemented by a surface of a flap, preferably rotatable around the geometric axis of rotation integrated with a cube, preferably polygonal.

[0062] Preferably, said at least one scraping surface has a second counter-shaped scraping portion in relation to a scraping ring delimiting the outlet or passage opening and activatable therein. Preferably, said second scraping portion is implemented by a surface of a flap, preferably rotatable around the geometric axis of rotation integrated with a cube, preferably polygonal.

[0063] Preferably, said at least one scraping surface has a third counter-shaped scraping portion in relation to internal surfaces of the storage container disposed in the vicinity of said outlet or passage opening and activatable therein. Even more preferably, said third scraping portion is implemented by a surface of a flap, preferably rotatable around the geometric axis of rotation integrated with a cube, preferably polygonal.

[0064] Preferably, said flap has a thickness of around 3 to 8 mm.

[0065] Preferably, a third motor member is operatively connected to said scraping device to cause rotation of said scraping surface at a scraping speed about said geometric axis of rotation. Preferably, said third motor member is operated at a speed of between 5 and 40 rpm. Even more preferably, for example, in the case of at least six scraping surfaces, said third motor member is operated at a speed of between 5 and 20 rpm.

[0066] Preferably, said scraping device comprises a single flap to provide the entire scraping surface. Said single flap is preferably rotatable around the geometric axis of rotation integrally with a cube, preferably polygonal. Alternatively, said scraping device comprises two or more complementary flaps which cooperate with each other to provide said scraping surface. Said complementary flaps are preferably rotatable around the geometric axis of rotation integrally with a cube, preferably polygonal. Preferably, said complementary flaps are connected to a single cube in the same angular position with respect to the geometric axis of rotation. Alternatively, said complementary flaps are connected to different cubes and are preferably rotatable around the geometric axis of rotation independently of each other.

[0067] Scraping, as described above, has proven to be particularly advantageous in the case of highly conditioned and powdery materials that tend to adhere to the internal walls of the storage container, around the outlet or passage opening. Such conditioning is, therefore, prevented by scraping both the obturator body and the parts around it and/or using flaps and, therefore, thin scrapers. This way, the material flows constantly and does not become caked. Furthermore, the scraper device accelerates the final or final measuring step, following the material towards the exit opening.

[0068] Preferably, said control unit is operatively connected to the scraper device and is configured to generate a second control signal directed to the scraper device and adapted to control the operating parameters thereof, such as a scraping speed (understood as activation starting from a zero scraping speed of the scraping device and/or scraping speed module and/or scraping speed direction), as a function of the degree of outlet opening or passage opening and/or as a function of the quantity of ingredient collected at the collection station. Preferably, said control unit is operatively connected to the third motor member to control the scraping speed.

[0069] The Applicant believes that controlling the aforementioned operational parameters of the scraping device, in particular, the scraping speed as a function of the degree of opening of the outlet or passage opening and/or the amount of ingredient collected allows to optimize the degree cleaning process, adapting it to the type of ingredient and the measurement step, in order to define an additional factor suitable for influencing quality and precision. Furthermore, the previously mentioned control is intended to influence the tracking of the material towards the exit opening to accelerate the final or final step of measurement.

[0070] Preferably, said obturator body of the measuring apparatus is shaped as a portion of a sphere having a center disposed on said obturator geometric axis. Preferably, said shutter geometric axis is displaced with respect to the exit opening. Preferably, said sphere portion is bounded by said spherical plug surface having the same radius as the sphere and by a through surface that cuts said sphere at a single edge that delimits the spherical plug surface and the spherical plug surface. ticket. Preferably, in the angled opening position, said outlet opening is at least partially open on said passage surface.

[0071] The Applicant believes that the provision of a portion of a sphere as an obturator body allows it to meet the high cleaning parameters required and facilitate the flow of the ingredient leaving the storage container.

[0072] Preferably, the passage surface comprises a first portion that defines a first plane parallel to the shutter geometric axis.

[0073] Preferably, the passage surface comprises a second portion that defines a second plane parallel to the shutter geometric axis. Preferably, the second portion intersects the first portion.

[0074] Below, reference is produced for the plug that belongs indifferently to the measuring valve and/or the measuring device using the definition of outlet opening which, in the case of the measuring valve, should be understood as a passage opening.

[0075] Preferably, said sphere portion comprises said shutter geometric axis.

[0076] The Applicant believes that this configuration allows the implementation of a passing surface that defines an exit chute to facilitate the flow of the ingredient.

[0077] Preferably, said obturator body is configured to perform a total angular movement of 120° from the angular closing position to an angular displacement end position.

[0078] Preferably, the first portion is arranged at a distance from the shutter geometric axis equal to around % of the radius of the sphere.

[0079] Preferably, the first portion is shaped so as to generate, at least in angular positions of the plug body close to the angular closing position, a circular segment configuration of said open surface of the outlet opening.

[0080] The Applicant believes that providing a plug body having a conformation according to a portion of a sphere with a passing surface having a first flat portion arranged in such a position allows regulating the exit of the ingredient by dividing the opening exit with different geometries according to the quantity (weight) of ingredient collected at the collection station, in particular, according to circular segments.

[0081] Preferably, said first portion has a recess adapted to form, in at least one partial angular opening position of the plug body, an effective portion of the open surface having a width parallel to the geometric axis of the plug, which has a value comparable to that of a length, perpendicular to the shutter geometric axis.

[0082] Preferably, the first portion is shaped so as to generate, at least in angular positions of the plug body close to the angular closing position, an open surface of the exit opening that has at least one portion elongated in the direction of the axis obturator geometric shape, preferably shaped according to a circular segment portion.

[0083] Preferably, said recess is implanted by a groove, preferably formed centrally in the first portion, which develops in a direction perpendicular to the projection of the obturator geometric axis in the first portion, an apex of the groove that defines a closing point of the plug body which, when resting on or below the plane of the outlet or passage opening, corresponds to the angular closing position of the plug body.

[0084] Preferably, the shape and dimensions of the groove are a function of the type of ingredients, in particular, the shape and size of at least one tablet ingredient.

[0085] The Applicant believes that this aspect expands the field of application of the measuring device, simplifying the output of the ingredient regardless of its type and making the same measuring device usable for any type of ingredient. Furthermore, such a provision allows managing the reduction in open surface more gradually and in a linear manner, particularly in the last measurement step that affects the final accuracy.

[0086] Preferably, the second portion is arranged at a distance from the shutter geometric axis equal to around % of the sphere radius “R”. Preferably, the passage surface comprises a third portion defining a third flat surface parallel to the shutter axis and preferably disposed at a distance from the shutter axis equal to around % of the radius of the sphere. The third flat surface intersects the second portion.

[0087] The Applicant believes that a second and possibly a third portion of the passage surface can shape the passage surface in order to limit measurement times.

[0088] Preferably, an agitator is arranged in said storage container, preferably rotating around a geometric axis of rotation transverse, preferably perpendicular, to said outlet opening. Preferably, a second motor member is operatively connected to said agitator to cause rotation thereof around said geometric axis of rotation.

[0089] Preferably, said control unit is operatively connected to the second motor member and is configured to generate a second control signal directed to the second motor member and adapted to control a rotational speed of the agitator in accordance with the degree of opening of the outlet opening.

[0090] Preferably, said control unit is operatively connected to the second motor member and is configured to generate a second control signal directed to the second motor member and adapted to control a rotational speed of the agitator in accordance with the quantity of ingredient collected at the collection station.

[0091] The Applicant believes that the agitator controls as a function of the degree of opening of the outlet opening and/or the amount of ingredient collected allows to optimize the flow of the ingredient, adapting it to the measurement step in order to define an additional factor suitable to influence quality and accuracy.

[0092] Said agitator preferably comprises a central rod defining the geometric axis of rotation and at least one blade extending radially from an end of the central rod and comprising said scraping surface on which said agitator integrates said scraper device.

[0093] Said agitator preferably comprises two or more blades uniformly distributed around the central rod and active, preferably, on the spherical obturator surface.

[0094] Said agitator preferably comprises four blades uniformly distributed around the central rod and active, preferably, on the spherical obturator surface.

[0095] Preferably, the blade extends from the central shaft, even more preferably, from one of the lower ends thereof, and has an arcuate conformation adapted to superiorly delimit a portion, preferably, of the surface of spherical shutter.

[0096] Preferably, the extension of the blade is such that it covers a section between the central rod and the exit opening.

[0097] Preferably, the distance between the scraping surface and, preferably, the spherical obturator surface is less than 5 mm.

[0098] Preferably, said blades are oriented radially with respect to said geometric axis of rotation. Alternatively, said blades have an orientation inclined with respect to a direction radial to said geometric axis of rotation to influence the ingredient falling in the opposite direction of the exit opening or being pushed towards the exit opening.

[0099] In other words, preferably, the blade follows the profile, preferably, of the spherical obturator surface for the entire section between the central rod and the exit opening, for example, partially covering a meridian of the portion of sphere that defines the obturator body or that follows the sphere portion in a curved pattern.

[00100] Said agitator preferably comprises at least one mixing paddle, preferably above the blade, which has an inclined orientation with respect to said geometric axis of rotation to influence the fall of the ingredient in the opposite direction of the opening. exit or which is pushed towards the exit opening.

[00101] Said control unit is preferably configured to control the direction of rotation of a stirring speed of the agitator as a function of the degree of opening of the outlet opening in order to influence the fall of the ingredient in the opposite direction of the opening. outlet or which is pushed towards the outlet opening. Preferably, the direction of rotation of a stirring speed of the agitator is controlled as a function of the degree of opening of the exit opening in order to influence the ingredient falling in the opposite direction of the exit opening or being pushed towards the exit opening. exit.

[00102] Preferably, the mixing paddle is arranged at a certain distance from the blade along the geometric axis of rotation. Preferably two or more mixing paddles are provided.

[00103] The Applicant believes that this aspect improves the distribution of the ingredient in the storage container and contributes to managing the flow of the ingredient both as a function of the ingredient type and as a function of the measuring step.

[00104] Preferably, said mixing paddle is connected to the central rod so that it rotates integrated with said blade.

[00105] Said agitator preferably comprises at least one mixing arm that extends radially from the geometric axis of rotation and is arranged in an intermediate position along the geometric axis of rotation itself.

[00106] Preferably, said mixing arm is connected to the central rod so as to rotate integrally with said blade.

[00107] Preferably, two or more mixing arms are provided arranged staggered along and/or around the geometric axis of rotation.

[00108] The Applicant believes that this aspect improves the distribution of the ingredient in the storage container and helps prevent stagnation that would negatively affect accuracy.

[00109] Preferably, support spokes arranged transversely to the geometric axis of rotation are provided within the storage container to support the central rod.

[00110] Preferably, said first motor member is reversible.

[00111] Preferably, said measuring apparatus comprises a safety device configured to cause automatic closure of the outlet opening, bringing the shutter body back to an angular closing position.

[00112] The outlet opening is automatically closed in the event of a failure.

[00113] Preferably, the safety device comprises an operatively active elastic element on the obturator member to bring it back to the angular closing position. Preferably, the elastic element in the form of a helical spring is interposed between the plug rod and a frame of the measuring apparatus, preferably by means of a lever.

[00114] The Applicant believes that this aspect improves safety and prevents dispersion of the ingredient.

[00115] Preferably, the control unit is configured to calculate the maximum angular opening position of the plug body as a function of the final quantity (weight) of the ingredient to be collected at the collection station and at least one approximation value for the final quantity.

[00116] Preferably, the maximum angular opening position of the shutter body is calculated as a function of the final quantity (weight) of the ingredient to be collected at the collection station and at least one approximation value for the final quantity.

[00117] The Applicant believes that this aspect allows adapting the way in which the outlet opening is opened to the quantity of ingredient to be measured.

[00118] Preferably, the control unit is configured to generate an opening signal directed to the first motor member adapted to cause rotation of said shutter body from the angular closing position to the maximum angular opening position.

[00119] Preferably, controlling the degree of opening of the outlet opening comprises causing said shutter body to rotate from the angular closing position to the maximum angular opening position.

[00120] Preferably, the collection station comprises sensors operatively connected to the control unit and configured to generate a signal for the presence of a collection container at the collection station and/or below the outlet opening. Preferably, the control unit is configured to subordinate the opening signal upon receipt of the presence signal from a collection container.

[00121] Preferably, opening the outlet opening is made possible if the presence of a collection container is detected at the collection station and/or below the outlet opening.

[00122] Preferably, controlling the opening degree of the outlet opening comprises reducing the opening degree of the outlet opening that causes rotation of the shutter body from the maximum angular opening position towards the angular closing position upon reaching a first value approach to the final quantity.

[00123] Preferably, the first control signal is adapted to reduce the degree of opening of the outlet opening which causes rotation of the shutter body from the maximum angular opening position towards the angular closing position upon reaching a first value of approximation to the final quantity. Preferably, said measuring device is configured to generate a measuring signal indicative of obtaining at least a first approximation value for the final quantity.

[00124] Preferably, the ways of controlling the degree of opening of the outlet opening are modified when at least one additional approximation value for the final quantity is reached.

[00125] Preferably, the first control signal is suitable for modifying the modes for controlling the degree of opening of the outlet opening when at least one additional approximation value for the final quantity is reached.

[00126] Preferably, said measuring device is configured to generate a measuring signal indicative of obtaining at least one additional approximation value for the final quantity.

[00127] The Applicant believes that by adjusting the opening degree of the outlet opening based on obtaining approximate values for the final quantity, it is possible to gradually optimize the measurement accuracy and reduce the measurement time.

[00128] Preferably, when the measurement signal indicates obtaining the first approximation value for the final quantity, the first control signal controls the closing of the shutter body at a given angular speed and/or to reach a first angular position intermediate. Preferably, when the measurement signal indicates the achievement of a second approximation value, closer to the final quantity, the first control signal controls the closing of the shutter body by modifying its angular velocity and/or defining a second intermediate angular position.

[00129] Preferably, when the measurement signal indicates the achievement of a third approximation value, closer to the final quantity, the first control signal controls the closing of the shutter body by modifying its angular velocity and/or defining a third intermediate angular position.

[00130] Preferably, when the measuring signal indicates obtaining the final quantity (overall weight), the first control signal controls the closing of the shutter body to reach the angular closing position.

[00131] Preferably, during the passage of the ingredient from the storage container to the collection station, a surface of the measuring apparatus disposed in the vicinity of the exit opening is scraped, causing movement of at least one scraping surface, preferably , the rotation of at least one scraping surface around a geometric axis of rotation, preferably transverse to said exit opening.

[00132] Preferably, the preferably spherical obturator surface facing towards an internal volume of the storage container and/or a scraping ring delimiting the outlet opening and/or internal surfaces of the storage container disposed in the vicinity of said outlet opening is scraped, causing movement, preferably rotation, of the at least one counter-shaped scraping surface with respect to said, preferably spherical plug surface and/or said scraping ring and/or said internal surfaces of the storage container around the geometric axis of rotation. Preferably, said scraping surface is active on at least a portion of a preferably spherical cap defined by said preferably spherical plug surface when disposed in an angled closing position and/or on said scraping ring. and/or on said internal surfaces of the storage container.

[00133] Preferably, said scraping surface has a plurality of scraping portions. Even more preferably, at least one scraping portion is set in motion, preferably rotating, independently of the remaining scraping portions.

[00134] Preferably, a surface of the measuring apparatus arranged in the vicinity of the outlet opening is scraped, causing rotation of a plurality of scraping surfaces distributed around the geometric axis of rotation.

[00135] Preferably, a scraping speed that corresponds to the rotational speed of the scraping surface is controlled as a function of the amount of ingredient collected at the collection station and/or as a function of the degree of opening of the outlet opening.

[00136] Preferably, an ingredient agitation speed corresponding to a rotational speed of an agitator disposed in said storage container is controlled as a function of the amount of ingredient collected at the collection station and/or as a function of the degree of opening of the outlet opening.

[00137] Preferably, controlling said stirring and/or scraping speed comprises calculating, as a function of a final quantity of ingredient to be collected at the collection station, the maximum scraping speed and/or the maximum driving speed and at least minus an approximation value for the final quantity and define said maximum scraping speed and/or said maximum driving speed.

[00138] Preferably, the control unit is configured to calculate, as a function of a final quantity of ingredient to be collected at the collection station, the maximum scraping speed and/or the maximum driving speed and at least one value approach to the final quantity. Preferably, the control unit is configured to generate an activation signal directed to the second motor member adapted to cause rotation of said agitator at said maximum driving speed.

[00139] Preferably, the activation signal is generated simultaneously with the opening signal.

[00140] The Applicant believes that this aspect allows adapting the maximum scraping speed to the quantity of ingredient to be measured.

[00141] Preferably, controlling the scraping speed and/or the agitation speed comprises reducing the scraping speed and/or the agitation speed from said maximum scraping speed and/or from said maximum driving speed upon reaching a first value of approximation to the final quantity.

[00142] Preferably, the second control signal is adapted to reduce the stirring and/or scraping speed from said maximum speed when reaching a first approximate value for the final quantity.

[00143] Preferably, the ways of controlling the scraping speed and/or the stirring speed are modified when at least one additional approximation value to the final quantity is reached.

[00144] Preferably, the second control signal is suitable for modifying the modes for controlling the scraping speed and/or the stirring speed when at least one additional approximation value for the final amount is reached.

[00145] Preferably, when the measuring signal indicates obtaining a first approximate value for the final quantity, the second control signal reduces the scraping speed and/or the stirring speed starting from the maximum driving speed and /or scraping and defines a first agitation and/or scraping speed lower than the maximum driving and/or scraping speed.

[00146] Preferably, when the measurement signal indicates the achievement of a second approximation value for the final quantity, closer to the final quantity, the second control signal modifies, preferably reduces, the speed of stirring and/or scraping and defines a second stirring and/or scraping speed that is different, preferably lower than the first stirring and/or scraping speed.

[00147] Preferably, when the measurement signal indicates obtaining a third approximation value for the final quantity, closer to the final quantity, the second control signal modifies, preferably, reduces the stirring and/or scraping speed and defines a third different stirring and/or scraping speed, preferably lower than the second stirring and/or scraping speed.

[00148] Preferably, the third speed of stirring and/or scraping is in order to obtain the correct output of the last part of the ingredient, in any form in order to obtain the desired degree of precision.

[00149] Preferably, when the measurement signal indicates obtaining the final quantity (overall weight), the second control signal defines a zero driving and/or scraping speed.

[00150] The Applicant believes that by adjusting the scraping speed, in particular, the rotation speed of the agitator based on approximate values for the final quantity, it is possible to gradually optimize the measurement accuracy and reduce the measurement time.

[00151] Preferably, the direction of rotation of said stirring speed and/or said scraping speed is controlled as a function of the degree of opening of the exit opening in order to influence the fall of the ingredient in the opposite direction of the exit opening. or which is pushed towards the exit opening.

[00152] Said control unit is preferably configured to control the direction of rotation of the scraping and/or stirring speed as a function of the degree of opening of the outlet opening in order to influence the fall of the ingredient in the opposite direction. exit opening or which is pushed towards the exit opening.

[00153] Preferably, said bottom comprises a scraping ring mounted inside the storage container and delimiting the exit opening.

[00154] Preferably, the scraping ring can be associated with a support ring.

[00155] Preferably, the storage container develops mainly along a vertically arranged longitudinal geometric axis.

[00156] Preferably, the storage container is produced from inclined plates coupled together by one or more coupling flanges. Preferably, the storage container is divided into portions along the longitudinal geometric axis, for example, an upper portion having the inlet opening, a middle portion and a lower portion having the bottom.

[00157] Preferably, the first motor member is directly keyed to a plug rod that defines the plug axis and carries the plug body.

[00158] Preferably, the second motor member is directly keyed to the central shaft. Preferably, the central rod passes through an upper section of the storage container and has an upper end directly keyed to the second motor member.

[00159] Preferably, the measuring apparatus is mounted on a frame produced in such a way as to arrange the outlet opening at a certain height in relation to a support plane of the frame itself.

[00160] Additional features and advantages will clearly become more apparent from the detailed description of a preferred, but not exclusive, embodiment of a measuring apparatus for measuring compound ingredients, in particular for tires, and a method for measuring compound ingredients, in particular particular for tires according to the present invention, together with a measuring valve and a measuring installation.

[00161] Said description is hereinafter determined with reference to the attached drawings, provided for illustrative and therefore non-limiting purposes only, in which: - Figure 1 is a schematic side view of a measuring installation; - Figures 1A and 1B are schematic views of a detail of the installation in Figure 1 according to possible embodiments; - Figure 2 is a schematic perspective view of a compound ingredient measuring apparatus, in particular for tires; - Figure 3 is a schematic front view of the measuring apparatus in Figure 2 in which some elements have been omitted to highlight others; - Figure 4 is a sectional view of the measuring apparatus in Figure 3 according to line IV-IV; - Figures 4A-4E show the “X” detail in Figure 4 enlarged and in different operational configurations; - Figure 5 is a side view of the measuring apparatus in Figure 3; - Figure 6 is a sectional view of the measuring apparatus in Figure 5 according to line VI-VI; - Figure 7 is a schematic perspective view of a component of the measuring apparatus in Figure 3; - Figure 8 is a front view of the component in Figure 7; - Figure 9 is a top view of the component in Figure 7; - Figure 10 is a section view of the component in Figure 9 according to line X-X; - Figure 11 is a section view of the component in Figure 8 according to line XI-XI; - Figure 12 is a schematic perspective view of an additional component of the measuring apparatus in Figure 3; - Figure 12A is a schematic perspective view of an additional element of the additional component in Figure 12; - Figure 13A is a section view of the additional component in Figure 12 according to line XIII-XIII; - Figure 14A is a section view of the additional component in Figure 13 according to line XIV-XIV; - Figure 13B is a side view of a component of the measuring apparatus in Figure 3 according to a possible embodiment; - Figure 14B is a side view of a component of the measuring apparatus in Figure 3 according to a possible embodiment; - Figure 15A and Figure 15B show a diagram related to the operation of the measuring device, respectively; - Figure 16 schematically shows an opening surface of the measuring apparatus through which an ingredient to be dispensed flows; - Figures 17A-17D show possible variants of detail “X” in enlarged Figure 4A.

[00162] With reference to the attached Figures, numerical reference 1 indicates a measuring apparatus for measuring compound ingredients, in particular for tires.

[00163] The measuring apparatus comprises a storage container 2 that delimits an internal volume 3 adapted to receive a compound ingredient, in particular for tires. The storage container 2 develops mainly along a vertically arranged longitudinal geometric axis “A” and has an upper section 2a and a bottom 2b. Preferably, the storage container 2 is produced from inclined plates 4 coupled together by one or more coupling flanges 5. Preferably, the storage container 2 is divided into portions along the longitudinal geometric axis “A”, e.g. example, an upper portion 6, an intermediate portion 7 and a lower portion 8.

[00164] The upper portion 6 comprises the upper section 2a and has a cylindrical shape provided with an enlargement that defines a feed chute 9 of the storage container 2. The intermediate portion 7 has a frusto-conical shape with a downwardly reducing cross-section along the longitudinal geometric axis “A”. The lower portion 8 has a cylindrical shape and comprises the bottom 2b.

[00165] The storage container 2 has an inlet opening 10 and an outlet opening 11.

[00166] The entrance opening 10 is located in the upper section 2a and is, for example, implemented by an access conduit 12 to the internal volume 3. According to the illustrated example, the entrance opening 10 is arranged laterally in relation to to the longitudinal geometric axis “A” in enlarging the upper portion 6 so that it faces the feed chute 9.

[00167] Optionally, it is possible to extend the internal volume 3 by connecting an additional storage container to the access conduit 12.

[00168] The outlet opening 11 is arranged in the bottom 2b of the storage container 2 and has a circular shape in a substantially horizontal plane. The outlet opening 11 preferably has a diameter between 200 mm and 300 mm.

[00169] The bottom 2b is preferably mounted within the lower portion 8. For example, the bottom 2b comprises a scraping ring 13 mounted within the lower portion 8 and delimiting the exit opening 11. The scraping ring 13 can be associated with a support ring 14.

[00170] A shutter body 15 is housed in the exit opening 11 and is rotated about a shutter axis “O” parallel to the plane defined by the exit opening 11 so that the exit opening 11 is closed or opened as a function of the angular position of the angular body 15. The shutter geometric axis “O” is preferably displaced with respect to the outlet opening 11.

[00171] The degree of opening of the outlet opening 11 is defined by the area of an open surface 11a of the outlet opening 11, through which the ingredient flows, which is variable as a function of the angular position of the plug body 15.

[00172] The plug body 15 housed in the outlet opening 11 provides a measuring valve that can be used within the measuring apparatus 1 or in different devices. In the case of the measuring device 1, the lower portion 8 of the storage container 2 performs the functions of housing the measuring valve and the outlet opening 11 performs the functions of the passing opening of the measuring valve.

[00173] The obturator body 15 is shaped as a portion of a sphere “S” (indicated by a dotted line in Figure 4) which has a center “C” arranged on the obturator geometric axis “O” and radius “R”, preferably between 105 mm and 160 mm.

[00174] The sphere portion defining the plug body 15 is delimited on one side by a spherical plug surface 16 that coincides with the outer surface of the sphere and, on the other side, by a passing surface 17 that cuts the sphere on a single edge 18 delimiting the spherical obturator surface 16 and the passage surface 17.

[00175] A front portion 18a of the edge 18 defines a closure zone of the shutter body 15 which, when resting in the plane of the outlet opening 11 or below it, corresponds to the angular closing position of the shutter body.

[00176] The sphere portion defining the shutter body 15 comprises the shutter geometric axis “O”. In other words, the plug axis “O” intersects the sphere portion defining the plug body 15 between the spherical plug surface 16 and the passage surface 17.

[00177] The spherical obturator surface 16 has a convex profile facing the internal volume 3 and therefore towards the ingredient to be measured.

[00178] In an angle-closing position of the plug body 15, the spherical plug surface 16 is arranged to completely close the outlet opening 11. In this angle-closing position, the spherical plug surface 16 defines a spherical cap within the which the shutter body 15 moves, assuming, for example, a maximum angular opening position and one or more partial angular opening positions. At least in the maximum angular opening position, the spherical plug surface 16 can be arranged outside the spherical lid.

[00179] As best illustrated in Figures 7 to 11, the passage surface 17 comprises a first portion 17a, preferably implanted in a plane parallel to the shutter geometric axis “O” and arranged at a distance from the shutter geometric axis “O” equal to around % of the radius “R” of the sphere. In other words, the first portion 17a defines a first flat surface parallel to the shutter axis “O” and disposed at a distance from the shutter axis “O” equal to around % of the radius “R” of the sphere.

[00180] The first portion 17a is shaped so as to generate, at least in some angular positions of the shutter body 15, in particular, close to the angular closing position, a circular segment configuration of the open surface 11a of the outlet opening 11 .

[00181] Preferably, a groove 19 is formed centrally in the first portion 17a and develops in a direction perpendicular to the projection of the shutter geometric axis “O” in the first portion itself. The shape and dimensions of the groove 19 are a function of the type of ingredients, in particular, the shape and dimensions of at least one tablet ingredient.

[00182] An apex 20 of the groove 19 defines a closing point of the plug body 15 which, when resting in or below the plane of the outlet opening 11, corresponds to the angular closing position of the plug body (Figure 4A) . A radius of the obturator body 15 passing through said apex 20 represents a closing radius 21.

[00183] The groove 18 represents a possible embodiment of a recess adapted to implant, in at least one partial angular opening position of the obturator body 15, an effective portion P1 of the open surface 11a having a width L1 parallel to the geometric axis of shutter “O”, which has a value comparable to that of a length L2, perpendicular to the geometric axis of shutter “O”.

[00184] The open surface 11a of the passage opening 11 also has at least one elongated portion P2 in the direction of the shutter axis “O”, in particular, two elongated portions P2 if the recess is arranged centrally to the first portion 17a. Figure 16 schematically shows the passage opening 11a in a position of partial angular opening of the shutter body 15, close to closing.

[00185] The passage surface 17 comprises a second portion 17b, preferably implanted in a plane parallel to the geometric axis of shutter “O”, arranged at a distance from the geometric axis of shutter “O” equal to around % of the radius “R” of the sphere and which intersects the first portion 17a. In other words, the second portion 17a defines a second flat surface parallel to the shutter axis “O”, disposed at a distance from the shutter axis “O” equal to around % of the radius “R” of the sphere and which crosses the first portion 17a.

[00186] The passage surface 17 may also comprise a third portion 17c, preferably implanted by a plane parallel to the geometric axis of shutter “O”, arranged at a distance from the geometric axis of shutter “O” equal to approximately % of the radius “R” of the sphere and which intersects the second portion 17b. In other words, the third portion 17c defines a third flat surface parallel to the shutter axis “O”, disposed at a distance from the shutter axis “O” equal to around % of the radius “R” of the sphere and which crosses the second portion 17b.

[00187] As shown, for example, in Figures 1 to 3, a first motor member 22, preferably of the reversible type, is operatively connected to the plug body 15 to cause rotation thereof around the geometric axis. of shutter “O” between the angular closing position and a maximum angular opening and vice versa. The first motor member 22 may be implemented by means of an asynchronous or brushless motor, for example, directly keyed to a plug rod 23 defining the plug axis “O” and carrying the plug body 15. alternative mode, other drives can be provided, for example, oil-dynamic.

[00188] Preferably, the measuring apparatus 1 comprises a safety device 24 configured to cause automatic closure of the outlet opening 11 which returns the shutter body 15 to an angular closing position in the event of failures. For example, an elastic element 25 is operatively active in the plug member 15 to bring it back to the angular closing position. According to a possible example, the elastic element 25 in the form of a helical spring is interposed between the shutter rod 23 and a frame of the measuring apparatus 1, preferably by means of a lever 26.

[00189] The safety device 24 can be associated with position sensors and/or mechanical stops configured and arranged to mechanically define the end position of displacement and/or angular closure of the shutter body 15.

[00190] The measuring apparatus 1 comprises a stirrer 27 arranged inside the storage container 2, in particular, in the internal volume 3.

[00191] The agitator 27 is rotatable around a geometric axis of rotation that substantially coincides with the longitudinal geometric axis “A”. Such geometric axis of rotation “A” is perpendicular to the exit opening 11.

[00192] The agitator 27 comprises a central rod 28 that defines the geometric axis of rotation “A” and at least one blade 29 that extends radially from the central rod 28 and comprises a scraping surface R1.

[00193] The scraping surface R1 is counter-shaped in relation to the spherical obturator surface 16 and is active in at least a portion thereof that follows the rotation of the agitator 27 around the geometric axis of rotation “A”.

[00194] In the illustrated example, four blades 29 are provided, which are evenly distributed around the central rod 28 and active on the spherical obturator surface 16.

[00195] Each blade 29 extends from the central shaft 28, in particular, from a lower end thereof, and has an arcuate conformation adapted to superiorly delimit a portion of the spherical obturator surface 16. In other words, each blade 29 follows the profile of the spherical plug surface 16 in a curved manner over the entire distance between the central shaft 28 and the exit opening 11. The extension of each blade 29 is to cover a section comprised between the central shaft 28 and scraping ring 13.

[00196] In other words, as illustrated, for example, in Figure 13A, the blades 29 have an orientation inclined with respect to a radial direction to the geometric axis of rotation “A” to influence the fall of the ingredient in the opposite direction of the opening. exit 11 or towards the exit opening 11 (which depends on the angle of inclination and the direction of rotation of the blades 29). Alternatively, as illustrated, for example, in Figure 13B, the blades 29 may be oriented according to a radial plane, which partially covers a meridian of the sphere portion defining the plug body 15.

[00197] The distance between each blade 29, in particular, each scraping surface R1, and the spherical plug surface 16 is determined by the compromise between the need for effective scraping and corresponding effect of the material and the need to obtain the correct movement of the obturator body and the agitator. Preferably this distance is less than 5 mm, preferably between 0.2 mm and 0.4 mm.

[00198] Support spokes 31, for example, arranged transversely to the geometric axis of rotation “A” may be provided within the storage container 2 to support the central rod 28.

[00199] The agitator 27 may further comprise at least one remixing arm 32 extending radially from the central rod 28 at a determined distance from the blade 29 along the geometric axis of rotation “A”. In particular, the remixing arm 32 is arranged in an intermediate position of the central rod 28, above the blade 29. Two or more remixing arms 32 may be provided, arranged staggered along the geometric axis of rotation “A” and/or around the geometric axis of rotation “A”.

[00200] The agitator 27 may further comprise at least one mixing paddle 32a that has an inclined orientation with respect to the geometric axis of rotation “A” to influence the fall of the ingredient in the opposite direction of the exit opening 11 or towards the opening outlet 11 (which depends on the angle of inclination and the direction of rotation of the mixing blade). Figure 12A shows two mixing paddles 32a adapted to be connected to the central rod 28 so as to rotate integrated with the blades 29 by means of pins 32b insertable into supports 32c of the central rod 28.

[00201] As shown, for example, in Figures 1 to 3, a second motor member 33 is operatively connected to the agitator 27 to cause rotation about the geometric axis of rotation “A” of the blade 29 and, therefore, of the scraping surface R1 on at least a portion of the spherical plug surface 16. In other words, the second motor member 33 causes scraping of the spherical plug surface 16 at a scraping speed defined by the rotational speed of the second motor member 33 and agitator 27.

[00202] The second motor member 33 can be implemented by an asynchronous or brushless motor, for example, directly switched to the central shaft 28. Alternatively, other drives can be provided, for example, oleodynamic. The central rod 28 passes through the upper section 2a and has an upper end directly keyed to the second motor member 33.

[00203] Below the outlet opening 11, the measuring apparatus 1 may comprise a suction hook 2c adapted to be arranged in communication with a suction source, not shown.

[00204] As illustrated, for example, in Figures 1 and 2, the measuring apparatus 1 is mounted on a frame 34 produced in such a way as to arrange the outlet opening 11 at a certain height in relation to a support plane of the frame itself. .

[00205] Below the outlet opening 11, a collection station 35 is provided to collect the ingredient falling from the storage container 2.

[00206] The collection station 35 comprises a measuring device 36 configured to detect the amount of ingredient falling from the storage container 2, preferably a weighing device configured to detect the weight of the ingredient falling from the storage container 2 The measuring device 36 may be deployed by a load cell to measure the weight of the collected ingredient or by means of a volumetric meter to measure the volume of the collected ingredient.

[00207] According to a possible embodiment, a measuring installation 100 comprises a plurality of measuring devices 1, each dedicated to a specific ingredient. The measuring devices 1 are substantially identical and preferably arranged in a line along a single frame 34 so as to arrange each outlet opening 11 at a certain height relative to the boundary plane of the frame and define a collection path 37 extending between an inlet 37a and an outlet 37b. If necessary, a return path closes the entire path of the measuring installation 100 in a ring.

[00208] One or more collection stations 35 may be provided, which are movable along the collection path 37, by means of a conveyor 38, preferably a conveyor belt. Conveyor 38 is, for example, configured for intermittent movement of collection station(s) 35 between one or more measuring devices 1.

[00209] Collection station 35 comprises a collection container 39 to which a collection bag, not shown, is preferably associated prior to entry 37a into collection path 37. The collection bag is subsequently removal of the collection container 39 after exit 37b from the collection path 37. Alternatively, the collection station 35 may be adapted to receive a collection container 39. Furthermore, the collection station 35 may comprise sensors, not shown. , configured to detect the presence of a collection container 39 at the collection station 35 and/or below the outlet opening 11.

[00210] Reference number 40 indicates a control unit. Preferably, the control unit 40 is operatively connected to the measuring device 36 and/or the first motor member 22 and/or the second motor member 33 (Figure 1).

[00211] Reference number 41 indicates one or more vibrators that can be associated with the storage container 2, outside it.

[00212] Through the control exercised by the control unit 40, the measuring apparatus 1 is capable, in use, of implementing a method for measuring compound ingredients, in particular for tires, in accordance with what is described hereinafter.

[00213] A compound ingredient, in particular for tires, is arranged in the storage container 2.

[00214] In the presence of a collection container 39, the outlet opening 11 is at least partially opened to allow the passage of the ingredient from the storage container 2 to the collection station 35.

[00215] The quantity, in particular the weight of the ingredient collected at the collection station 35, is measured by the measuring device 36. Reference is made below to a weighing device. In particular, the weighing device is configured to generate a measuring signal “M” indicative of the weight of the ingredient collected at the collection station 35. Preferably, the weighing device is configured to generate a measuring signal “M” indicative of the obtaining at least an approximation value M1, M2, ... for a final quantity (weight). The measuring signal “M” is sent to the control unit 40.

[00216] According to the weight of the ingredient collected in the collection station 35, the control unit 40 controls the opening degree of the outlet opening 11 and the rotation speed of the stirrer 27, that is, the driving speed. Furthermore, according to the example illustrated in Figure 1, in which the scraping surfaces R1 are integrated with the agitator 27, the control unit 40 also controls the scraping speed, in particular, of the spherical plug surface 16 which coincides with the driving speed.

[00217] The control unit 40 is, in fact, configured to receive the measurement signal “M” e, which depends on the weight of the ingredient collected at the collection station 35, generating a first control signal S1 and a second control signal S2 control. In Figure 1, signals “M”, S1 and S2 are illustrated with reference to a single measuring device 1 for simplicity of illustration.

[00218] The first control signal S1 is directed to the first motor member 22 and is adapted to control the angular position of the shutter body 15 and the opening degree of the outlet opening 11. Preferably, due to the first control signal S1, the opening degree of the outlet opening 11 is controlled. Even more preferably, due to the first control signal S1, the opening degree of the outlet opening 11 is reduced upon approaching the final quantity M0, for example, upon reaching a first approach value M1 for the final quantity M0. Furthermore, the methods for controlling the degree of opening of the outlet opening 11 are modified when at least one additional approach value for the final quantity is reached, for example, a second approach value M2 and a third approach value M3.

[00219] The second control signal S2 is directed to the second motor member 33 and is adapted to control the rotational speed of the stirrer 27 and, according to the example already described, also the scraping speed, in particular, of the surface of spherical shutter 16. Preferably, due to the second control signal S2, the rotational speed of the stirrer 27 is controlled differently. For example, by means of the second control signal S2, the rotational speed of the stirrer 27 is reduced when approaching the final quantity M0, for example, when reaching a first approach value M1 for the final quantity M0. Furthermore, the methods for controlling the rotational speed of the stirrer 27 are modified when at least one additional approach value for the final quantity is reached, for example, the second approach value M2 and the third approach value M3.

[00220] In use, the collection containers 39 enter the collection path 37, possibly equipped with respective collection bags, and proceed along the collection path until stopping below the exit opening 11 that corresponds to the ingredient to be collected. The control unit 40, appropriately configured, manages the advancement of each collection container 39 according to the ingredients to be collected.

[00221] The control unit 40, suitably configured, calculates the maximum angular opening position of the plug body 15 as a function of the final quantity M0 to be collected at the collection station 35. Such maximum angular opening position could coincide with the angular displacement end position in case of large quantities of ingredient to be collected or could be smaller than the angular displacement end position in case of limited quantities of ingredient to be collected. The control unit 40, appropriately configured, also calculates at least one approximation value M1, M2, ... for the final quantity M0.

[00222] For example, M0 can be 15 kg (or up to 25 kg). Depending on the type of material (and substantially independently of M0), M1 can be 1 kg to 6 kg for M0, M2 can be around 500 g for M0 and M3 can be around 100 g for M0.

[00223] Therefore, the control unit 40, suitably configured, generates an opening signal directed to the first motor member 22 to cause rotation of the shutter body 15 from the angle-closing position to the maximum angle-opening position, as, for example, example, shown in Figure 4B. Optionally, the control unit 40 subordinates the opening signal to the receipt of a signal indicating the presence of a collection container 39, if the relative sensors are present.

[00224] In reference to the diagram in Figure 15A or 15B, the abscissa shows the weight of the collected ingredient, for example, expressed in grams [g]. Preferably, the abscissa shows approximate values M1-M3 for the final quantity (weight) M0. The ordinates show both the scraping speed (i.e., the rotational speed of the central rod 28, preferably expressed in Hz) and the rotation angle at which the plug body 15 is located with respect to the angular closing position expressed in degrees.

[00225] In the diagram in Figure 15A, the maximum angular opening position corresponds to the zero value of the weight. For example, the maximum angular opening position coincides with the end position of angular displacement which corresponds to the angular position in which the closing radius 21 is disposed at an angle δ equal to 120° with respect to the position in which it is in the position of angle closure (Figure 4B).

[00226] Referring to the diagram in Figure 15A, the control unit 40 generates the first control signal S1 to progressively close the outlet opening 11 by rotating the shutter body 15 from the maximum angular opening position towards the position of angular closure when reaching the first approach value M1.

[00227] For example, the weighing device generates a measurement signal “M” that indicates the achievement of a sequence of approximate values M1-M3 that corresponds to a first control signal S1 that, for each approximate value, modifies the Closing shutter body speed 15.

[00228] When the measurement signal “M” indicates the achievement of a first approach value M1, the first control signal S1 causes the shutter body 15 to close until the second approach value M2 is reached. In this interval, the shutter body 15 reaches a first intermediate angular position.

[00229] For example, this first intermediate angular position corresponds to the angular position in which the closing radius 21 is arranged at an angle Y smaller than δ (Figure 4C).

[00230] In the first intermediate angular position, the third portion 17c defines an ingredient exit chute from the exit opening 11.

[00231] Continuing along the abscissa of the diagram in Figure 15A, when the measurement signal “M” indicates obtaining the second approximation value M2, the first control signal S1 modifies the rotational speed of the shutter body 15, e.g. example, increasing until reaching a third approximation value M3. In this interval, the shutter body 15 reaches a second intermediate angular position. For example, this second intermediate angular position corresponds to the angular position in which the closing radius 21 is arranged at an angle β smaller than y (Figure 4D).

[00232] Continuing along the abscissa of the diagram in Figure 15A, when the measurement signal “M” indicates the achievement of the third approximation value M3, the first control signal S1 modifies the rotational speed of the shutter body 15, e.g. example, reducing until reaching the final quantity M0. In this interval, the shutter body 15 reaches a third intermediate angular position. For example, this third intermediate angular position corresponds to the angular position in which only the groove 19 faces the exit opening 11 and the closing radius 21 is arranged at an angle α smaller than β (Figure 4E).

[00233] Therefore, the first control signal S1 causes the shutter body 15 to close to reach the angular closing position.

[00234] As alternatively illustrated in Figure 15B, the first control signal S1 modifies the angular position of the shutter body 15 for each approach value M1-M3.

[00235] All intermediate angular positions are angular opening positions in which the outlet opening 11 has an opening surface 11a, that is, it is at least partially open. In particular, the outlet opening 11 is at least partially open on the passing surface 17. Any intermediate angular position, even different from that shown, can be calculated as the maximum angular opening position according to the weight of the ingredient to be collected in the collection station. For example, if M0 corresponds to 1 to 4 kg, the maximum angular opening position can be closed to that shown in Figure 4D (angle β).

[00236] Similarly, the control unit 40, appropriately configured, calculates a maximum rotation speed V1 of the agitator 27, that is, a maximum driving speed which, in the illustrated example, corresponds to a maximum scraping speed, as a function of the weight of the ingredient to be collected at the collection station.

[00237] At the same time as the opening signal, the control unit 40, appropriately configured, generates an activation signal directed to the second motor member 33 to set the rotation of the stirrer 27 to the maximum stirring/scraping speed V1. In other words, the activation signal defines the maximum scraping speed.

[00238] Referring to the diagram in Figure 15A, the control unit 40 generates the second control signal S2 to modify, for example, reduce the stirring/scraping speed starting from the maximum stirring/scraping speed V1 upon reaching the first approximation value M1.

[00239] At each approach value M1-M3, the second control signal S2 sets a certain rotation speed V2-V3, e.g. lower.

[00240] In particular, when the measuring signal “M” indicates the achievement of the first approximation value M1, the second control signal S2 reduces the stirring/scraping speed starting from the maximum stirring/scraping speed V1 and sets a first rotation speed V2 lower than the maximum speed V1.

[00241] Therefore, when the measurement signal “M” indicates the achievement of the second approximation value M2, the second control signal S2 reduces the first stirring/scraping speed V2 and sets a second stirring/scraping speed V3 lower than the first speed V2.

[00242] Therefore, when the measurement signal “M” indicates the achievement of the third approximation value M3, the second control signal S2 reduces the stirring/scraping speed and sets a third stirring/scraping speed V4 lower than the second V3 speed.

[00243] In the interval in which the rotation speed V4 is set, the shutter body 15 reaches the third intermediate angular position in which only the groove 19 faces the exit opening 11 and in order to obtain the correct exit from the last part of the ingredient, in whatever form it is in (powders, tablets,...), in order to obtain the desired degree of precision.

[00244] In this position or close to this position, the open surface 11a of which is schematically illustrated in Figure 16, the control unit 40 can modify the direction of rotation of the agitator 27, in particular, in the case where the blades 29 have an orientation inclined (Figure 13A) and/or mixing paddles 32a are present, in order to influence the fall of the ingredient in the opposite direction of the exit opening or in thrust towards the exit opening.

[00245] Upon reaching the final quantity M0 that corresponds to the total weight, the shutter body 15 returns to the closing position and the agitator 27 is stopped.

[00246] In alternative embodiments and operations, a scraper device 42 may be provided having at least one scraping surface R1 that rotates about the geometric axis of rotation “A”, preferably a plurality of scraping surfaces R1 distributed around of the geometric axis of rotation “A”. According to a possible example, at least four scraping surfaces are provided, even more preferably at least six scraping surfaces distributed around the geometric axis of rotation.

[00247] The scraping surface R1 is configured to scrape a surface of the measuring device 1 disposed in the vicinity of the outlet opening 11. For example, the scraping surface R1 has a first scraping portion 30 counter-shaped in relation to the spherical plug surface 16. Such first scraping portion 30 is movable and active on the spherical plug surface 16, preferably on at least a portion of a spherical lid defined by the spherical plug surface 16 when arranged in the angular closing position. In other words, the scraper device 42 is structurally separate from the agitator 27, as illustrated, for example, in Figure 14B, in which scraping surfaces R1, similar to those produced by the blades 29, consist of the lower surface of flaps 30a distributed around the longitudinal geometric axis “A” and which rotate around the same integrally with a hub 30b. Preferably, a flap has a thickness of around 8 mm.

[00248] In Figure 14B, four flaps 30a are advantageously provided. Preferably, the number of scraping surfaces is to cover a total surface comprised between 5% and 30% (four flaps), preferably 15% and 45% (six flaps) of the spherical plug surface.

[00249] According to the example in Figure 14B, the stirring speed and the scraping speed are distinct and can be controlled independently, for example, by providing a third motor member, preferably of a reversible type, dedicated to the scraper device 42 and controlled in a manner independent of the second engine member. The second control signal S2 may therefore contain separate control information intended respectively for the scraper device 42 and the stirrer 47 for operating the same as described below.

[00250] In this case, the control unit 40 controls the degree of opening of the shutter opening 11 by means of the first control signal S1 as a function of the measuring signal “M”, while the spherical shutter surface 16 is scraped by moving each scraping surface R1 during passage of the ingredient from the storage container 2 through the open surface 11a.

[00251] The control unit 40 may be operatively connected to the scraper device 42 and configured to generate the second control signal S2, in this case also directed to the third motor member of the scraper device 42. The second control signal S2 can be adapted to control the scraping speed (rotation) of the scraper device 42 itself according to the degree of opening of the outlet opening 11 (Figure 1A) or according to the amount of ingredient collected in the collection station 35 (Figure 1B ).

[00252] Also in this embodiment, the agitator 27 can be provided, structurally distinct from the scraper device 42, for example, which comprises the mixing blades 32a and/or the remixing arm 32. The control unit 40 can be connected so operational to the agitator 27 and the second control signal S2, also directed to the second motor member 33, can be adapted to control the rotational speed of the agitator 27, that is, the driving speed, according to the degree of opening of the agitator 27. exit opening 11 (Figure 1A) or according to the amount of ingredient collected in the collection station 35 (Figure 1B). In other words, in addition to being structurally independent, the scraper device 42 and the agitator 27 are managed independently of the control unit 40. Also in this case, in the vicinity of the position shown in Figure 4E, whose open surface 11a is schematically illustrated in Figure 16, the control unit 40 can modify the direction of rotation of the agitator 27, in particular, in the case where the mixing blades 32a are present, so as to influence the fall of the ingredient in the opposite direction of the exit opening or in thrust towards the exit opening.

[00253] According to additional embodiments, the scraping surface R1 may have more scraping portions, each dedicated to a part of the apparatus.

[00254] The scraping surface R1, and in particular the relevant scraping portions producing the same, can be produced from two or more complementary flaps 30a, 43a, i.e., cooperating with each other to form the scraping surface R1, which rotates around the geometric axis of rotation “A” integrally with the cube 30b, preferably polygonal, even more preferably hexagonal. Preferably, the two or more complementary flaps are connected to the cube 30b in the same angular position relative to the geometric axis of rotation “A”, for example, on the same face of the polygonal cube. Alternatively, the complementary flaps 30a, 43a are connected to different hubs and are preferably rotatable around the geometric axis of rotation “A” independently of each other.

[00255] Alternatively, the scraping surface R1 and, in particular, the relevant scraping portions that produce it, can be produced from a single flap 43b, that is, a single flap 43b that forms the entire scraping surface R1, which rotates around the geometric axis of rotation “A” integrally with the cube 30b, preferably polygonal, even more preferably hexagonal.

[00256] Preferably, a plurality of scraping surfaces R1 distributed around the geometric axis of rotation “A” are provided, for example, six scraping surfaces R1, one for each face of the hexagonal cube 30b.

[00257] Preferably, the scraping surface R1 has one or more of: - the first scraping portion 30 counter-shaped in relation to the spherical plug surface 16 and activatable on at least a portion of the spherical cap defined by the spherical plug surface spherical obturator 16 when arranged in the angled closing position, - a second scraping portion 30' in counter shape in relation to the scraping ring 13 delimiting the exit opening 11 and activatable therein; - a third scraping portion 30'' counter-shaped in relation to the internal surfaces of the storage container 2 disposed in proximity to the outlet opening 11 and activatable therein.

[00258] Regardless of whether they are called “first”, “second” and “third” scraping portions, each scraping portion can be present independently of each other.

[00259] Figure 17A illustrates an embodiment comprising tabs 30a structurally similar to those illustrated in Figure 14B, that is, each defines the first scraping portion 30 of the counter-shaped scraping surface R1 in relation to the spherical plug surface 16 and activatable on at least a portion of the spherical cap defined by the spherical plug surface 16 when disposed in the angled closed position. In addition to the flaps 30a, flaps 43a are provided, each complementary to a flap 30a that defines the scraping surface R1. Tabs 43a are produced to define the second scraping portion 30' and the third scraping portion 30''. Furthermore, each flap 43a comprises a connecting arm 44 projecting from the hub 30b. According to a possible embodiment not illustrated, the second scraping portion 30' and the third scraping portion 30'', thus the flap 43a, may be omitted.

[00260] Figure 17B illustrates an embodiment that differs from that illustrated in Figure 17A in that each flap 30a defines the first scraping portion 30 and the second scraping portion 30', while each flap 43a, complementary to a flap 30a that defines the scraping surface R1 defines the third scraping portion 30'' and comprises the connecting arm 44 projecting from the hub 30b. According to a possible embodiment not shown, the third scraping portion 30'' and therefore the flap 43a may be omitted.

[00261] Figure 17C illustrates an embodiment that differs from that illustrated in Figure 17A since each flap 30a defines the first scraping portion 30, while each flap 43a, complementary to a flap 30a that defines the scraping surface R1, defines the third scraping portion 30'' and includes connecting arm 44 projecting from hub 30b. In this case, therefore, the second scraping portion 30' is not provided.

[00262] Figure 17D illustrates an embodiment in which each scraping surface R1 and, in particular, the relevant scraping portions composing it are produced by the single flap 43b. Possibly, the connecting arm 44 can be omitted.

[00263] The measuring apparatus 1 in the variant described above is capable, in use, of implementing the method for measuring compound ingredients, in particular for tires, described above and further distinguished by the fact that it allows scraping a surface of the apparatus measuring device arranged close to the outlet opening 11 and, in particular, the spherical plug surface 16 facing the internal volume 3 of the storage container and/or the scraping ring 13 delimiting the outlet opening 11 and/or the surfaces internal parts of the storage container 2 arranged close to the exit opening itself. Said scraping is obtained during the passage of the ingredient from the storage container 2 to the collection station 35, causing the rotation of the scraping surface R1, produced according to one of the possible embodiments previously described.

[00264] If at least six scraping surfaces R1 are provided, the scraping speed can be kept low, thereby enabling the third motor member to be operated at a speed of between 5 and 20 rpm.

[00265] According to a further alternative, the agitator 27 comprises two structurally and functionally distinct units: a first unit comprises the blades 29 which possibly have respective scraping surfaces R1 and a second unit comprises the mixing blades 32a. The blades 29 may be radial or differently oriented.

[00266] The two units can be controlled independently both in relation to the value of the rotation speed and its direction. Also in this case, in fact, in the vicinity of the position shown in Figure 4E, whose open surface 11a is schematically illustrated in Figure 16, the control unit 40 can modify the direction of rotation of the blades 29, particularly if configured to influence the fall of the ingredient in the opposite direction of the exit opening or towards the exit opening. Alternatively or additionally, the control unit 40 can modify the direction of rotation of the mixing blades 32a.

Claims (15)

1. Measuring apparatus (1) for measuring compound ingredients, in particular for tires, characterized in that it comprises: a storage container (2) defining an internal volume (3) adapted to receive a compound ingredient, in particular for tires, wherein said storage container (2) has an inlet opening (10) and an outlet opening (11), a plug body (15) housed in said outlet opening (11) which rotates around a shutter geometric axis (O) parallel to said outlet opening (11) and having a shutter surface (16) having a convex profile facing towards said internal volume (3), a collection station ( 35) of the ingredient disposed in the outlet opening (11) and comprising a measuring device (36) configured to generate a measuring signal (M) indicative of the amount of ingredient collected, a first motor member (22) connected in a manner operative to said plug body (15) in order to cause rotation thereof around the plug geometric axis (O) between a closed angular position in which said plug surface (16) is arranged to completely close the plug opening. outlet (11) and an open angular position in which said outlet opening (11) is at least partially open on an open surface (11a), a control unit (40) operatively connected at least to the measuring device ( 36) and the first motor member (22) and configured to: - calculate the maximum angular opening position of the shutter body (15) as a function of a final quantity (M0) of ingredient to be collected at the collection station ( 35) and at least one approximation value (M1-M3) approaching the final quantity (M0), - generating an opening signal addressed to the first motor member (22) adapted to cause rotation of said shutter body (15) from the closed angular position to the maximum angular opening position. - receiving said at least one measuring signal (M) and - generating, as a function of the quantity of ingredient collected at the collection station (35), a first control signal (S1) directed to the first motor member (22) and adapted to control the opening degree of the exit opening (11) by decreasing the opening degree of the exit opening (11) causing rotation of the shutter body (15) from the maximum angular opening position towards the closed angular position upon reaching a first approach value (M1) for the final quantity, the first control signal (S1) being adapted to modify modes for controlling the degree of opening of the outlet opening (11) when at least one additional approach value (M2-M3) reaches the final quantity. 2. Measuring apparatus (1) according to claim 1, characterized by the fact that said outlet opening (11) has a circular shape and said plug body (15) has a spherical plug surface (16), and wherein said obturator body (15) is shaped as a portion of a sphere (S) having a center (C) disposed on said obturator geometric axis (O), wherein said obturator geometric axis is displaced in relative to the exit opening (11), wherein said sphere portion is delimited by said spherical obturator surface (16) which has the same radius (R) as the sphere (S) and by a passage surface (17) which cuts said sphere (S) into a single edge (18) delimiting the spherical obturator surface (16) and the passage surface (17), so that, in the angular opening position, said outlet opening (11 ) is at least partially open on said passage surface (17). 3. Measuring apparatus (1) according to claim 2, characterized by the fact that said portion of a sphere comprises said shutter geometric axis (O). 4. Measuring apparatus (1) according to claim 2 or 3, characterized in that the passing surface (17) comprises a first portion (17a) that defines a first plane parallel to the shutter geometric axis (O) and a second portion (17b) that defines a second plane parallel to the shutter geometric axis (O). 5. Measuring apparatus (1) according to any one of claims 1 to 4, characterized in that it comprises a stirrer (27) disposed in said storage container (2), which rotates around a geometric axis of rotation (A) transverse to said outlet opening (11) and a second motor member (33) operatively connected to said agitator (27) in order to cause the same to rotate around said geometric axis of rotation (A) and wherein said control unit (40) is operatively connected to the second motor member (33) and is configured to generate a second control signal (S2) directed to the second motor member (33) and adapted to control a rotational speed of the agitator (27) as a function of the degree of opening of the outlet opening (11) and/or as a function of the quantity of ingredient collected in the collection station (35). 6. Measuring apparatus (1) according to claim 5, characterized in that said agitator (27) comprises at least one mixing blade (32a) having an orientation that is inclined with respect to said geometric axis of rotation (A) in order to affect the fall of the ingredient moving away from the exit opening or propelled toward the exit opening. 7. Method for measuring compound ingredients, in particular for tires carried out by an apparatus as defined in claim 1, characterized in that it comprises: - arranging a compound ingredient, in particular for tires, in a storage container (2) which has an exit opening (11) that leads to a collection station (35) of the ingredient, said exit opening (11) housing a shutter body (15) that rotates around a shutter geometric axis (O) parallel to said exit opening (11) and which has a shutter surface (16) that has a convex profile facing towards said internal volume (3), - calculate the maximum angular opening position of the shutter body ( 15) as a function of a final quantity (M0) of ingredient to be collected at the collection station (35) and at least one approach volume (M1-M3) approaching the final quantity (M0), - open at least partially said outlet opening (11) in order to allow the passage of the ingredient from the storage container (2) to the collection station (35) through an open surface (11a) of the outlet opening (11), - measure the quantity of ingredient collected at the collection station (35), - controlling the degree of opening of the outlet opening (11) as a function of the quantity of ingredient collected at the collection station (35), whereby controlling the degree of opening of the opening outlet comprises: - causing rotation of said shutter body (15) from the closed angular position to the maximum open angular position, reducing the degree of opening of the outlet opening (11) which causes the rotation of the shutter body (15) from the maximum open angular position towards the closed angular position upon reaching a first approximation value (M1) that approaches the final quantity, wherein the method for measuring tire compound ingredients comprises modifying the ways of controlling the degree of opening of the exit opening (11) when reaching at least one additional approximation value that approaches the final quantity (M2, M3). 8. Method for measuring tire compound ingredients, according to claim 7, characterized by the fact that it comprises modifying the closing speed of the plug body (15) for each approach value (M1-M3). 9. Method for measuring tire compound ingredients, according to claim 7, characterized by the fact that it comprises modifying the angular position of the plug body (15) for each approximation value (M1-M3). 10. Method for measuring tire compound ingredients according to any one of claims 7 to 9, characterized in that it comprises controlling an agitation speed of the ingredient that corresponds to a rotation speed of an agitator (27) arranged in said storage container (2) as a function of the amount of ingredient collected at the collection station (35) and/or as a function of the degree of opening of the outlet opening (11). 11. Method for measuring tire compound ingredients according to claim 10, characterized in that controlling said agitation speed comprises: - calculating, as a function of a final quantity (M0) of ingredient to be collected at the station of collection (35), the maximum agitation speed and at least one approximation value (M1-M3) that approaches the final quantity (M0), and - defining said maximum agitation speed. 12. Method for measuring tire compound ingredients according to claim 11, characterized in that controlling the agitation speed comprises reducing the agitation speed starting from said maximum agitation speed upon reaching a first approximation value (M1) that approaches the final quantity. 13. Method for measuring tire compound ingredients according to claim 12, characterized by the fact that it comprises modifying the ways of controlling the agitation speed by reaching at least one additional approximation value that approaches the final quantity (M2, M3). 14. Method for measuring tire compound ingredients according to claim 10, characterized in that it comprises controlling the direction of rotation of said stirring speed as a function of the degree of opening of the outlet opening (11), so as to affect the fall of the ingredient moving away from the exit opening or propelled towards the exit opening. 15. Measuring installation (100), characterized by the fact that it comprises a plurality of measuring apparatus (1), as defined in any one of claims 1 to 6, wherein each of said measuring apparatus (1) is dedicated to a specific ingredient, wherein said measuring apparatus (1) is arranged so as to dispose each outlet opening (11) at a specific height with respect to a boundary plane and defines a collection path (37) which is extended between an inlet (37a) and an outlet (37b) and wherein at least said collection station (35) is movable along the collection path (37).