JP2012101471A - Granular material supply device, apparatus for compounding and supplying granular material equipped with the same, and method for supplying granular material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a granular material supply device which can easily update calibration data, and to provide an apparatus for compounding and supplying a granular material equipped with the same, and a method for supplying a granular material.SOLUTION: The supply device 10 includes: an operation part 53 which accepts an input for discharging a granular material stored in a storage part 15 by keeping a rotation drive part 14 operated until a predetermined calibration time passes at a single calibration rotation speed corresponding to a single necessary supply capacity predetermined within a range where a cutting-out part 11 can cut out, and accepts an input of mass of the discharged granular material; and a control part which operates the rotation drive part 14 on the basis of the discharge input from the operation part 53, and performs a calibration mode for updating a predetermined calibration data indicating a corresponding relationship between the rotation speed of the rotation drive part 14 and a supply amount per unit time on the basis of the input mass, the calibration time and the calibration rotation speed.

Description

  The present invention provides a supply of a granular material that supplies a granular material toward a supply destination by providing a cut-out portion at a lower portion of a storage portion that stores the granular material and controlling the cut-out portion The present invention relates to a blending and supplying apparatus for a granular material provided with the apparatus, and a method for supplying a granular material.

2. Description of the Related Art Conventionally, a supply device that supplies a granular material toward a supply destination by providing a cut-out portion below a storage portion that stores the granular material and controlling the cut-out portion is known. .
As a cutting unit of such a supply device, one provided with a rotary drive unit such as a screw feeder or a rotary feeder is known (for example, see Patent Document 1 below).
As such a supply device, in order to quantitatively supply or measure the granular material stored in the storage unit, a measuring container provided with a measuring instrument such as a flow meter or a load cell is provided below the cutting unit. Some of them are installed and feedback control is performed on the drive unit of the cutting unit based on the detection value of the measuring device, thereby providing a fixed quantity supply or a measurement supply.
In such a thing, it was necessary to provide a measuring instrument, and there existed a problem that an apparatus structure became complicated. Therefore, calibration data (calibration curve, calibration curve) showing the correspondence between the number of rotations per unit time (rotational speed) of the rotation drive unit of the cut-out part and the supply amount (supply capability) per unit time of the granular material. ) Is stored in advance, and a supply device is also known that is configured to quantitatively supply or meter in a desired supply amount of the granular material based on the calibration data.

JP 2010-112791 A

However, the calibration data has different values depending on the type of granular material (material type, bulk density, shape, particle size distribution (particle size variation degree), and particle shape difference due to grinding conditions, etc.). Therefore, in the initial preparation operation stage before the steady operation of the apparatus, it is necessary to discharge the supplied granular material as a sample, measure and input the discharged mass, and update in advance.
In the conventional supply device, when the calibration data is updated, the rotation speed of the rotation drive unit of the cutting unit is changed to, for example, small, medium, and large so as to be compatible with various usage modes. It has been necessary to execute discharge for a predetermined time a plurality of times at the rotational speed, to input the discharge amount for each discharge, and to update the calibration data based on these inputs. That is, in order to be able to cope with various usage modes from a small amount supply to a large amount supply, the correspondence relationship between the supply capability and the rotation speed is a curve (such as an approximate curve calculated by the least square method). Since the values are expressed, it is necessary to perform calibration several times at a plurality of different rotational speeds with a certain range, and to update the calibration data based on them. In such a thing, there existed a problem that it became a troublesome operation | work and the granular material used for a calibration increased. The granular material used for this calibration is preferably discarded from the viewpoint of preventing contamination and the like. In this case, there is a problem that the amount of discard increases. In addition, the calibration data update setting is preferably performed every time the material is changed because the calibration data has different values depending on the type of the granular material, and in this case, it becomes a very complicated operation. Improvement was desired.

  The present invention has been made in view of the above circumstances, and a powder material supply device that can easily update calibration data, a powder material blending and supplying device including the same, and a powder material The purpose is to provide a supply method.

  In order to achieve the above-mentioned object, the powder material supply device according to the present invention determines the number of rotations per unit time of the rotation drive unit of the cut-out unit provided in the lower part of the storage unit for storing the powder material. By changing, it is a supply device of the granular material that is capable of changing the supply amount of the granular material to be supplied per unit time, within the range of the cutting ability of the cut portion in advance The rotary drive unit is operated at a single calibration rotation speed corresponding to a single required supply capacity that is set until a predetermined calibration time has elapsed, and the particulate material stored in the storage unit is discharged. And an operation unit that receives an input of the mass of the discharged particulate material, and operates the rotational drive unit based on the discharge input from the operation unit, and the input mass And based on the calibration time and the calibration speed. There are, characterized in that it comprises a control unit for executing the calibration mode to update the preset calibration data showing a relationship between the supply amount per rotation speed and unit time of the rotary drive unit.

In the powder material supply apparatus according to the present invention configured as described above, in the calibration mode, a single unit according to a single required supply capacity set in advance within the range of the cutting capability of the cutting section. The rotation drive unit of the cutting unit is operated at a calibration rotational speed until a predetermined calibration time elapses, and control is performed to discharge the particulate material stored in the storage unit. And the input of the mass of this discharged particulate material is accepted, and based on this mass and the calibration time and the calibration rotational speed, the rotational speed (rotational speed) and unit time of the rotational drive unit The preset calibration data indicating the correspondence relationship with the hit supply amount (supply capability) is updated.
Therefore, the calibration data can be easily updated as compared with the conventional method in which calibration is performed at a plurality of different rotational speeds. That is, it is possible to improve workability when updating calibration data that needs to be performed relatively frequently, such as every time the material is changed. Moreover, as a result, the granular material used for calibration can be reduced, and when it is necessary to discard this, the amount of discard can be reduced.
Depending on the type and model of the cutting part of the supply device (for screw feeders, screw diameter and pitch, blade shape, number of strips, trough diameter, etc.) In the present invention, a single required supply capability (a supply amount required per unit time) is set within the range of the extractable capability. This single required supply capacity can be set as appropriate within the range of the above-described ability to cut out. However, in accordance with the specifications of the supply apparatus, for example, it should be set according to the type of granular material to be handled. May be. In addition, if this single required supply capacity is a value near the lower limit value or upper limit value of the cut-out capability of the cut-out part, variations in supply amount and errors are likely to occur. It is preferable to set the value within a predetermined range near the intermediate capacity. Alternatively, a single required supply capacity may be calculated or set based on predetermined data input from the operation unit as a preset item or the like.
In the present invention, a single calibration rotational speed corresponding to the single required supply capacity set in this way is determined, the rotational drive unit is operated at the single calibration rotational speed, and calibration is executed. I am doing so.
That is, in the present invention, a calibration mode in which a single required supply capacity is set within the range of the cutout section capacity, that is, within a usable range, and calibration is performed at a single calibration rotation speed according to this. Therefore, while it is possible to easily update the calibration data, it is possible to supply with relatively little error according to actual use.

In the present invention, the recommended supply capability of the apparatus may be determined based on the above-described ability to cut out, and the single required supply capability may be set within the range of the recommended supply capability. The recommended supply capacity can be set as appropriate within the range of the above-described ability to be cut out. However, as described above, the recommended supply capacity is determined according to the specifications of the supply device, for example, depending on the type of the granular material to be handled. It may be. In addition, if the recommended supply capacity is within the range close to the lower limit value or upper limit value of the cut-out capability of the cut-out part, as described above, variations in supply amount and errors are likely to occur. A predetermined range in the vicinity of the intermediate capacity is preferable. The single required supply capacity may be set in advance according to the specifications of the apparatus. For example, a value approximately in the middle of the recommended supply capacity is estimated and set in advance. You may keep it. In other words, in the present invention configured as described above, calibration is performed at a plurality of different calibration rotation speeds so that accurate calibration data can be obtained over a wide range so as to be compatible with various modes of use. Rather than updating the calibration data, the single calibration according to the single required supply capacity is made so that the calibration data is generally accurate within the assumed use range (range near the single required supply capacity). Calibration is executed at the calibration rotation speed of, and the calibration data is updated.
With such a configuration, the calibration mode can be executed with a simple operation, but the supply with less error according to the actual use can be performed, and within the assumed use range, it is generally accurate. Supply can be made.

In the present invention, the required supply capacity may be set by the control unit based on predetermined required supply data input from the operation unit.
With such a configuration, the calibration mode can be executed with a single calibration rotation speed corresponding to the required supply capacity closer to the actual use range, so the accuracy of the updated calibration data near the range Is improved and more accurate supply can be performed.
In other words, in the present invention configured as described above, calibration is performed at a plurality of different calibration rotation speeds so that accurate calibration data can be obtained over a wide range so as to be compatible with various modes of use. Rather than updating the calibration data, a single required supply capacity is set based on the required supply data input from the operation unit, and calibration is performed at a single calibration rotation speed in accordance with this. Therefore, the accuracy of the updated calibration data is improved in the vicinity of the range of the required supply capacity, and more accurate supply can be performed.
As the predetermined required supply data, when the supply device starts supply based on a material request signal or the like output from the supply destination, and executes a supply mode (batch supply) in which supply is stopped after a predetermined time has elapsed. For example, the required supply amount per batch (1 batch supply amount) and the predetermined time (1 batch supply time) input as preset items or the like from the operation unit are set as necessary supply data, and based on these The required supply capacity may be calculated and set.
In addition, when the supply mode performed by the supply device is continuous supply or the like, the processing amount (processing capability) processed per unit time at the supply destination is input as necessary supply data, and this processing capability is met. The required supply capacity may be set so as to be a value.
Or you may make it select thru | or input as required supply data from an operation part, such as a kind of granular material, rough supply amount (for example, a large amount supply, medium amount supply, a small amount supply, etc.). For example, when molding a synthetic resin molded product, a natural material, a pulverized material, a masterbatch material, or the like may be input, and the necessary supply capacity may be set based on this. In other words, the width of the usage range can be determined in advance depending on the type of the granular material, and the respective usage range is determined as the recommended supply capacity described above. May be stored in advance as each single required supply capacity, and a single required supply capacity may be set based on a selection operation such as the type input from the operation unit.

Moreover, in this invention, the said operation part is provided with the filling operation part which receives the input for making the said cutting part pre-fill with a granular material, Based on the input from the said filling operation part by the said control part The rotary drive unit may be operated, and the rotary drive unit may be operated based on the discharge input after the cutout portion is filled with the granular material.
The granular material that has been charged and stored in the storage unit of the supply device is not substantially filled in the trough (supply cylinder) or rotary mass of the screw of the cutting unit before the startup of the device, If the rotation drive unit is operated based on the discharge input in this state, the discharge amount at the first discharge tends to decrease. If the calibration data is updated based on the discharge amount, an error may occur. For this reason, it is conceivable that the calibration mode is executed a plurality of times, and the average value of each discharge amount is obtained and used as the above input mass. However, in this case, only a single calibration rotation speed is required compared to the conventional one. Although it is simple to execute, it is a cumbersome task.
On the other hand, in the above configuration, since the powder material is stably discharged from the cut-out portion, the rotational drive portion is operated based on the discharge input. Thus, a comparatively accurate calibration value (discharge amount) can be acquired, and calibration data can be updated based on the calibration value, and calibration data can be updated and set with little error even by performing calibration once. Therefore, the workability at the time of updating calibration data that needs to be performed relatively frequently, such as every time the material is changed, can be dramatically improved.

Further, in the present invention, the operation unit is operated at a rotation speed corresponding to the required supply capacity determined based on the updated calibration data until a predetermined confirmation time elapses and the operation unit is operated. A calibration data check operation unit that receives an input for discharging the granular material stored in the storage unit is provided, and the control unit is configured to control the rotation drive unit based on the discharge input from the calibration data check operation unit. The calibration data confirmation mode is activated to accept the input of the mass of the discharged particulate material via the operation unit and update the rotation speed according to the required supply capacity based on the input mass. Further, it may be executable.
With such a configuration, the rotation speed of the rotation drive unit according to the necessary supply capacity determined from the calibration data updated by the execution of the calibration mode can be updated again by executing the calibration data confirmation mode. Supply with less error is possible. In other words, the rotational speed according to the required supply capacity determined based on the calibration data updated by executing the calibration mode may cause a slight error depending on the degree of deviation from the calibration data before the update. Conceivable. In the above configuration, since the discharge is performed at the determined rotational speed, and the rotational speed corresponding to the necessary supply capacity is updated based on the mass of the discharged particulate material, more accurate supply It can be performed.

  In order to achieve the above object, the powder material blending and supplying apparatus according to the present invention is discharged from a plurality of powder material supplying apparatuses according to the present invention and the respective cut-out portions of these supply apparatuses. And a storage section for receiving the granular material, and when discharging from the cutting section of each supply device, the rotation drive section of each cutting section is synchronized with each rotation speed according to the required supply capacity It is configured to be activated and discharged.

According to the mixing and supplying apparatus for granular material according to the present invention having the above-described configuration, it is possible to supply each apparatus with less error, so that it is possible to mix the granular material with a mixing ratio with less error. it can.
In addition, since the rotational drive part of the cutting part of each supply device is operated synchronously and discharged, when it is introduced into the input storage part, a plurality of types of granular material are contained in the input storage part. It is possible to avoid the mixing means or the like on the downstream side because the state is appropriately mixed.

In order to achieve the above object, the powder material supply method according to the present invention includes a rotation drive unit rotation of a cut-out portion provided at a lower portion of a storage unit for storing the powder material. By changing the number, it is a supply method of the granular material that enables the supply amount of the granular material to be supplied per unit time, and within the range of the cutting ability of the cut portion The rotary drive unit is operated at a single calibration rotation speed corresponding to a single required supply capacity set in advance until a predetermined calibration time elapses, and the particulate material stored in the storage unit is discharged. Based on the discharge process, the mass input process that receives the input of the mass of the discharged particulate material, the input mass, the calibration time, and the calibration rotation speed, Pre-set to show the correspondence with supply volume per unit time It characterized in that it comprises a calibration data updating step of updating the amount data.
According to such a configuration, the calibration data can be easily updated as described above.

  The powder material supply device, the powder material combination supply device, and the powder material supply method according to the present invention are configured as described above, so that the calibration data can be updated. It can be done easily.

It is a schematic block diagram which shows typically an example of the system configuration | structure of the mixing | blending supply apparatus of the granular material material provided with the supply apparatus of the granular material which concerns on one Embodiment of this invention. (A) is a schematic side view of the same composition supply apparatus, (b) is a schematic cross-sectional view corresponding to the XX line arrow in (a). (A) is a partially omitted schematic perspective view of the same composition supply device, and (b) is a control block diagram of the same composition supply device. (A)-(d) is explanatory drawing for demonstrating an example of the preset calibration data in each supply apparatus. It is a schematic flowchart for demonstrating an example of the various preset items of the same mixing | blending supply apparatus. It is a schematic flowchart which shows an example of the basic operation | movement of the calibration mode performed in the same mixing | blending supply apparatus. It is a schematic flowchart which shows an example of the basic operation | movement of the calibration data confirmation mode performed in the same mixing | blending supply apparatus. (A)-(c) is explanatory drawing for demonstrating an example of the updated calibration data in each supply apparatus. (A) is a table | surface which shows an example of the cutting capability of the cutting part in each supply apparatus of the same mixing supply apparatus, (b) is another example of the basic operation of the calibration mode performed in the same mixing supply apparatus A table in which the storage target for explanation and the recommended supply capacity are associated with each other, (c) corresponds to an example of preset necessary supply capacity and an example of the calibration rotation speed in each supply device used in the basic operation example It is a table shown.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1-9 is explanatory drawing for demonstrating an example of the mixing | blending supply apparatus of the granular material material provided with the supply apparatus (supply part) of the granular material which concerns on this embodiment, and its operation example. .

As shown in FIG. 1 to FIG. 3, the blending and supplying apparatus 1 for granular material according to the present embodiment stores and discharges (cuts out) a plurality of types of granular material respectively. In the example, the first supply unit 10, the second supply unit 20, the third supply unit 30, and the fourth supply unit 40), and the powder discharged from each of these supply units 10, 20, 30, 40 A single input reservoir 60 for receiving the particulate material and a control panel 50 are provided.
Here, the above-mentioned powder material refers to a powder / granular material, but includes a fine flake shape, a short fiber piece shape, a sliver-like material, and the like.
Moreover, as said material, what kind of materials, such as synthetic resin materials, such as a resin pellet and a resin fiber piece, a metal material, a semiconductor material, a wood material, a chemical material, a food material, may be sufficient.
Moreover, as this granular material, when shape | molding a synthetic resin molded product, a natural material (virgin material), a grinding material, a masterbatch material, various additives etc. are mentioned, for example.

As shown in FIG. 1, the blending and supplying apparatus 1 supplies the granular material discharged from each of the supply units 10, 20, 30, and 40 to a supply destination such as an injection molding machine 6 through an input storage unit 60. It is configured to supply. Moreover, in this embodiment, the said mixing | blending supply apparatus 1 has shown the example installed directly on the injection molding machine 6, and is supplying each supply part 10,20,30,40 from material sources, such as a material tank. An example is shown in which a plurality of kinds of transported granular material are mixed and incorporated in a powder material mixing supply system for supplying to an injection molding machine 6 as a supply destination.
Although detailed explanation is omitted, the injection molding machine 6 melts the granular material material fed from the material charging port through the charging storage section 60 of the blending supply device 1 in the cylinder and melts it. The resin is injected into a mold (not shown) from the nozzle at the tip of the cylinder to form a resin molded product.

The supply destination is not limited to an injection molding machine that molds a synthetic resin molded product, but may be an injection molding machine for other materials, or other types of extrusion molding machines or compression molding machines for various materials. It is good also as an aspect which makes a molding machine a supply destination.
In addition, a charge hopper or the like as a temporary storage unit installed in the front stage or the like of such a molding machine may be used as a supply destination, and further, one end of a material transport pipeline for pneumatically transporting the granular material is provided. It is good also considering the collector etc. which are connected to an input storage part and are connected to the other end of this material transport pipeline as a supply destination. Moreover, in the aspect which carries out pneumatic transportation in this way, it is not restricted to the aspect which makes a supply destination single. For example, the material transport pipes may be branched, and the collectors may be connected to the other ends of the respective material transport pipes, so that the plurality of collectors may be used as the supply destination.

Each supply part 10,20,30,40 is set as the substantially the same structure in this embodiment.
These supply units 10, 20, 30, and 40 are respectively storage units (first storage unit 15, second storage unit 25, third storage unit 35, and fourth storage unit 45) that store the granular material. Cutout portions (first cutout portion 11, second cutout portion 21, third cutout portion 31, and fourth cutout portion 41) provided in the lower portions of the respective storage portions 15, 25, 35, 45. And.
Each storage unit 15, 25, 35, 45 includes a storage tank 16, 26, 36, 46 formed in a hopper shape, and above each storage tank 16, 26, 36, 46 is a collector 17. , 27, 37, 47 are installed.
The storage tanks 16, 26, 36, 46 and the collectors 17, 27, 37, 47 are dampers 18, 28, 38, 48 that open and close the inlets of the collectors 17, 27, 37, 47. It is connected in communication through a charging pipe provided with a. This damper may be any type, but in the illustrated example, flap-shaped dampers (flap dampers) 18, 28, 38, and 48 that are supported by the input pipe so as to be swingable by a shaft member are shown. Yes.

Moreover, each storage part 15, 25, 35, 45 is provided with material sensors 19, 29, 39, 49 (see FIG. 3B) for detecting the presence or absence of material.
In the present embodiment, these material sensors 19, 29, 39, and 49 detect the swings of the flap dampers 18, 28, 38, and 48 of the storage units 15, 25, 35, and 45, thereby It is configured to detect the presence or absence of materials 15, 25, 35, 45.
That is, the granular material collected in each collector 17, 27, 37, 47 opens the flap dampers 18, 28, 38, 48 by its own weight, so that each storage tank is provided via the input pipe. It is put into 16, 26, 36, 46 and stored. In the state of being stored from the full level to just before the material requirement level, the flap dampers 18, 28, 38, 48 are opened by the granular material stored in the input pipes under the collectors 17, 27, 37, 47. It will be in the state. On the other hand, if the granular material is reduced with the discharge of the granular material and there is no granular material that keeps the flap dampers 18, 28, 38, 48 open, the biasing member such as a weight or a spring The flap dampers 18, 28, 38, 48 are closed by the closing means.

In the present embodiment, the closing of the flap dampers 18, 28, 38, 48 can be detected by the material sensors 19, 29, 39, 49, and the material sensors 19, 29, 39, 49 receive the material request signal (material No signal) is output. As such material sensors 19, 29, 39, and 49, a limit switch or the like may be provided on the shafts of the flap dampers 18, 28, 38, and 48, and other appropriate detection means may be employed. is there. By adopting such an opening / closing mode by the flap dampers 18, 28, 38, and 48 and a detection mode of material presence / absence by detecting the swing thereof, a simple configuration can be achieved.
In addition, it is not restricted to such an aspect, The opening / closing valve, such as a slide damper, is provided between each storage tank 16,26,36,46 and each collector 17,27,37,47, and this is opened and closed. It is good. In this case, a material sensor may be separately provided at each storage tank 16, 26, 36, 46 or an appropriate portion of each collector 17, 27, 37, 47.

Each collector 17, 27, 37, 47 has a material transport pipe 2 whose end is connected to a material source such as a material tank, and a suction that sucks air in each collector 17, 27, 37, 47. Tubes 3 are connected to each other. The suction pipe 3 is connected to a suction blower 5 (see FIG. 3B) for transporting material as a transport air source.
One end of a suction pipe is connected to the suction side of the suction blower 5, and a transport air switching valve 4 (see FIG. 3B) is connected to the other end of the suction pipe. A number of suction pipes 3 (four in this embodiment) corresponding to the number of supply parts are connected to the transport air switching valve 4, and each of the suction pipes 3 is connected to the supply parts 10, 20, 30, Forty collectors 17, 27, 37, 47 are connected.

The suction blower 5 and the transport air switching valve 4 and the material sensors 19, 29, 39, and 49 constituting the material transport means to the storage units 15, 25, 35, and 45 are shown in FIG. As described above, the CPU 51 is connected to a CPU 51 as a control unit to be described later via a signal line or the like.
That is, if a material request signal is output from any one of the material sensors 19, 29, 39, and 49 among the storage units 15, 25, 35, and 45, it is connected to the collector of the storage unit that requested the material. The storage air switching valve 4 is switched so that the suction pipe 3 and the suction blower 5 communicated with each other, and the suction blower 5 is started, whereby the powder stored in the material source such as the material tank corresponding to the collector is collected. The granular material is transported toward the collector via the material transport pipe 2. And it collects in the said collector and throws into a storage tank and is stored.
That is, each of the material sensors 19, 29, 39, 49 is stored in each of the storage units 15, 25, 35, 45 so as to always store a predetermined amount or more of each material during the operation of the blending and supplying apparatus 1. According to the material request signal, each material is transported and replenished as appropriate.

In addition, as these storage parts 15, 25, 35, and 45, it is not restricted to the above, What kind of thing can be used as long as it can collect and temporarily store the granular material from the material source? It may be a thing. In addition, pneumatic transportation of the granular material to each collector 17, 27, 37, 47 is not limited to suction transportation, and compressed air from a compressor or the like as a transportation air source is supplied to a discharge portion or the like of the material source. It is good also as an aspect which pumps a granular material material through an air conveyance pipe line by supplying. Moreover, it is not restricted to the aspect which switches and transports the granular material from each material origin to each storage part 15,25,35,45 using a single transportation air source, Each storage part 15,25,35, It is good also as an aspect which provides a transportation air source for every 45 and can carry out pneumatic transportation separately.
Furthermore, the replenishment of the granular material to each of the storage units 15, 25, 35, 45 is not limited to the mode of supplying the granular material by air transportation. It is good also as a mode to replenish.
Moreover, it replaces with the aspect which carries out the transport replenishment control to each storage part 15, 25, 35, 45 by CPU51 as a control part of the said mixing | blending supply apparatus 1, and separately to the said material transport means via a signal line etc. Alternatively, a CPU or the like serving as a transport replenishment control unit may be connected to thereby execute the transport replenishment control.

In the present embodiment, the cutout portions 11, 21, 31, and 41 provided at the lower portions of the storage portions 15, 25, 35, and 45 are rotated by the rotation driving units 14, 24, 34, and 44 such as motors. A screw-type cutting section (screw feeder) having screws 12, 22, 32, and 42 to be driven is provided.
These cut-out parts 11, 21, 31, and 41 change the number of rotations per unit time (rotational speed of the motor, operation output to the motor) of the rotation driving units 14, 24, 34, and 44, thereby changing the unit time. It is possible to change the cutting amount (cutting ability) to be cut out. That is, each supply part 10,20,30,40 changes each rotation speed per rotation unit 14,24,34,44 of each cutting part 11,21,31,41, By changing the cutting ability of the cutting parts 11, 21, 31, 41, it is possible to change the supply amount (supply ability) supplied per unit time.
Further, as shown in FIG. 3B, the rotation drive units 14, 24, 34, and 44 of the cutout units 11, 21, 31, and 41 are connected to the CPU 51 as a control unit via signal lines and the like. Although details will be described later, the operation is controlled according to a predetermined program.

As shown in FIG. 2, the cutout portions 11, 21, 31, 41 are provided at the base ends of the screws 12, 22, 32, 42 below the inlets at the lower ends of the storage portions 15, 25, 35, 45. Each is provided with a casing provided so that a part may be located. Cylindrical troughs (supply cylinders) 13, 23, 33, 43 are provided along the screws 12, 22, 32, 42 so as to protrude from one side wall (front wall) of these casings. Each screw 12, 22, 32, 42 and each trough 13,23,33,43 are provided so that it may extend in the horizontal direction substantially orthogonal to the gravity fall direction of the granular material. In addition, you may make it set as the arrangement | positioning structure which inclined these so that these front-end | tips may become a position above a base end.
Each of these troughs 13, 23, 33, 43 is provided so that the respective front end openings face the funnel-shaped portion 61 of the input storage portion 60 described later.

In the present embodiment, as shown in FIG. 2 (b), an opening for receiving each screw 12, 22, 32, 42 is provided on the side wall (rear wall) opposite to the one side wall of each casing. The rotary drive units 14, 24, 34, 44 connected to the 12, 22, 32, 42 are connected and fixed so as to be attached to the side walls. In the illustrated example, one side of each of the rotary drive units 14, 24, 34, 44 is rotatably connected and fixed to one side of each casing via a connector such as a hinge, and the other side is clicked. The example which connected and fixed detachably with respect to each casing other side part is shown. These rotational drive units 14, 24, 34, and 44 and the screws 12, 22, 32, and 42 are connected to the rotational drive units 14, 24, In a state in which 34 and 44 are connected and fixed to the casing, the connection is made and the screws 12, 22, 32 and 42 can be driven to rotate. On the other hand, as shown by a two-dot chain line in FIG. 2 (b), if the fastening tool is released or removed, and the rotary drive parts 14, 24, 34, 44 are rotated with the connecting tool as a fulcrum, The rotation drive units 14, 24, 34, and 44 are disconnected from the screws 12, 22, 32, and 42, and the screws 12, 22, 32, and 42 can be removed from the casing. According to such a configuration, the screws 12, 22, 32, 42, the casing, the troughs 13, 23, 33, 43, and the like can be easily cleaned. In addition, it is good also as an aspect which attaches rotation drive part 14, 24, 34, 44 to the said casing easily so that attachment or detachment is possible, or it is good also as a structure which cannot be removed easily.
In addition, a material discharge opening is provided at the bottom of each casing, and a remaining material removal shutter that opens or closes the material discharge opening is provided.

Moreover, in this embodiment, what differs in the cut-out amount (cuttable capability) which can be cut out per unit time is employ | adopted as each cut-out part 11,21,31,41. As shown in FIG. 2 (b), the shape is formed so that the first cut-out portion 11, the second cut-out portion 21, the third cut-out portion 31, and the fourth cut-out portion 41 in this order can increase the cut-out capability. Screws 12, 22, 32, and 42 and troughs 13, 23, 33, and 43 (diameter, pitch, blade shape, number of strips, etc.) are set for each.
The cutting ability of each of the cutting portions 11, 21, 31, 41 is set from the above-described shape of each screw 12, 22, 32, 42 and each trough 13, 23, 33, 43. As shown in FIG. 9 (a), in this embodiment, the first cutout portion 11 has a cutout capability of 0.0936 kg / h to 5.35 kg / h, and the second cutout portion 21 can be cut out. The ability is set to 0.5 kg / h to 21 kg / h, the ability of the third cutout 31 to be cut out is set to 0.846 kg / h to 101 kg / h, and the cutout ability of the fourth cutout 41 is provided. The one set at 5 kg / h to 212 kg / h is employed. A single required supply capacity, which will be described later, is set within the range of the respective cutout capacities of the cutout parts 11, 21, 31, 41.

In addition, as each cutting part 11,21,31,41, it is not restricted to the screw feeder provided with the screw as the above cutting means, A rotation drive part, such as a motor, and the cutting rotated by this Any means may be used as long as the cutting amount can be changed per unit time by changing the number of rotations of the rotation driving unit. For example, rotating a mass feeder (rotary feeder) cut out by rotating a rotating body having a recess (mass portion) containing material on the peripheral surface, or rotating a rotating body projecting a plurality of rotating blades in the radial direction You may make it employ | adopt as a cut-out part the rotary valve cut out by. Or, rotate the rotary table with the concave part (mass part) etc. to store the material on the upper surface, rotate the table feeder cut out from the discharge port, or the table installed close to the hopper discharge port, and use the scraper on the table A mini table feeder or the like that scrapes and cuts out the material may be adopted as the cutout portion, or other cutout portions may be adopted.
9A is an example, and is a value that is set as appropriate depending on the type, model, and the like of each cut-out portion.

The input reservoir 60 for receiving the granular material cut out from each of the cutout portions 11, 21, 31, 41 is a trough 13, 23, 33, 43 of the cutout portions 11, 21, 31, 41 described above. A funnel-shaped portion 61 having a space for receiving the respective tip end portions thereof, the lower portion being tapered downward, and a calibration box inserting portion 62 continuously provided at the lower end of the funnel-shaped portion 61, and the calibration And a chute portion 67 connected to the lower end of the box insertion portion 62.
In the illustrated example, the funnel-shaped portion 61 has a configuration in which a lower portion having a substantially inverted square frustum shape is coupled to a lower end of an upper portion having a substantially rectangular tube shape.

  The calibration box insertion portion 62 has a substantially rectangular tube shape corresponding to the shape of the lower end of the funnel-shaped portion 61, and a calibration box 66 is inserted into one side wall thereof as shown in FIGS. A box insertion opening 63 is provided. In addition, as shown in FIGS. 1 and 2A, the calibration box insertion portion 62 is provided with an opening / closing door 64 that opens or closes the box insertion opening 63. The open / close door 64 has one side portion rotatably connected to one side portion of the calibration box insertion portion 62 by a connecting tool such as a hinge, and the other side portion is provided on the other side portion of the calibration box insertion portion 62. Further, a latch receiver is provided on the other side so that the closed state is maintained by a push-open type latch such as a magnetic latch. The opening / closing structure of the opening / closing door 64 may be any structure as long as the box insertion opening 63 is opened or closed. For example, the other side of the opening / closing door is attracted by a magnet to close the opening / closing door. A magnet catch structure in which the state is maintained may be employed, or a structure in which the other side portion of the opening / closing door is tightened by a fastening tool to maintain the closed state of the opening / closing door may be employed. Furthermore, it may be a shutter type (slide type) or a detachable opening / closing door.

The calibration box 66 can be inserted into and removed from the box insertion opening 63, and has a bottomed substantially rectangular parallelepiped box shape opened in one direction as shown in FIG. A handle is attached to one side wall of the calibration box 66, and a latch receiving portion that is attracted (magnetically attached) to a magnet latch provided in the calibration box insertion portion 62 is provided on the other side wall. .
This calibration box 66 is formed so as to be able to receive the entire amount of the granular material that has passed through the funnel-shaped portion 61 when inserted in the box insertion opening 63. That is, in a state where the calibration box 66 is inserted into the box insertion opening 63, the granular material that has passed through the funnel-shaped portion 61 is blocked by the calibration box 66 and does not flow downward, but is accommodated in the calibration box 66. Is done. On the other hand, if the calibration box 66 is detached from the box insertion opening 63, the granular material passed through the funnel-shaped part 61 flows down to the lower chute 67 through the calibration box insertion part 62. Yes.

When the calibration box 66 does not need to be inserted into the box insertion opening 63, as shown in FIG. 1 and FIG. 2 (a), a handle is attached to a hook portion provided at an appropriate position of the blending supply device 1. It is good also as what is hold | maintained by hooking.
The calibration box insertion unit 62 is provided with a calibration box sensor 65 (see FIG. 3B) that detects whether or not the calibration box 66 is inserted into the box insertion opening 63. As the calibration box sensor 65, a contact type sensor such as a limit switch provided in the latch portion of the magnet latch described above may be employed. This makes it possible to output an error message or the like when the open / close door 64 is closed or the calibration box 66 is not inserted. The contact sensor is not limited, and a non-contact optical sensor, a magnetic sensor, or the like may be employed.
The calibration box sensor 65 is connected to a CPU 51 as a control unit via a signal line or the like.

The chute 67 connected to the lower end of the calibration box insertion portion 62 is configured to receive the granular material that has passed through the calibration box insertion portion 62, and discharges the granular material to the supply destination at the lower end. A discharge port 68 is provided.
Further, as shown in FIGS. 1 and 3B, the chute portion 67 detects a decrease in the storage level of the granular material in the input storage portion 60, and a material request signal (material no signal). A material sensor (level meter) 69 is provided. In the example shown in the figure, the chute 67 is a sight glass, and a non-contact capacitance level meter is used as a material sensor 69. However, other non-contact sensors are employed. Alternatively, a contact type level switch or the like may be employed. Further, the material sensor 69 is not limited to the chute portion 67 and may be provided at an appropriate position of the input storage portion 60.

The material sensor 69 is connected to the CPU 51 as a control unit via a signal line or the like. Based on the material request signal of the material sensor 69, the CPU 51 causes the above-described cutting units 11, 21, 31, 41 to be connected. The rotation driving units 14, 24, 34, and 44 are controlled, and supply (metering) from the supply units 10, 20, 30, and 40 is started. That is, in the present embodiment, the material request signal is output using the material request signal of the material sensor 69 as a supply start signal instead of supplying (continuously supplying) the granular material continuously blended to the supply destination. Each time, the powder material is blended and supplied (batch supply).
Note that the material sensor 69 may not be provided when continuously supplying to the supply destination.

As shown in FIG. 1 and FIG. 2A, the control panel 50 is provided so as to be attached to the side portion of the blending and feeding apparatus 1 (in the illustrated example, the side portion of the input storage portion 60).
As shown in FIG. 3B, the control panel 50 sets, inputs, and displays various settings and the like connected to the CPU 51 as a control unit and the CPU 51 via signal lines. An operation panel 53 that constitutes a display operation unit, various setting programs and various programs such as a control program for executing various operations described later, set in advance by operating the operation panel 53, input values, Each of the various operating conditions, various data tables, and the like are stored, and a storage unit 52 including various memories is provided.
The CPU 51 includes a clocking unit such as a clock timer and an arithmetic processing unit, controls each of the above-described devices, and according to a predetermined program, transport and supply operation of the granular material from the above-mentioned material source to the blending and supplying apparatus 1, A blending supply (metering) operation (steady operation mode) of the blending supply apparatus 1 to be described later, a calibration mode and a calibration data confirmation mode to be described later are executed.

In the storage unit 52, the number of rotations (rotational speed) of the rotation driving units 14, 24, 34, and 44 of the cutting units 11, 21, 31, and 41 in the supply units 10, 20, 30, and 40 and per unit time are stored. Each initial calibration data indicating a correspondence relationship with the supply amount (supply capability) is stored in advance.
This initial calibration data may be set empirically or experimentally before shipment in a factory or the like, or may be set as an initial setting item after installation.
For example, the correspondence between the rotation speed (rpm) of the rotation drive unit 14 of the first cutout section 11 and the supply capacity (kg / h) is supplied at a rotation speed of 810 rpm as shown in FIG. Expressed as a substantially linear calibration curve (calibration curve) passing through the point where the capacity is 2 kg / h and the origin, the correspondence between the rotational speed of the rotation drive unit 24 of the second cutout section 21 and the supply capacity is as follows: As shown in FIG. 4B, the rotation speed is 300 rpm, the supply capability is represented as a substantially linear calibration curve that passes through the point and the origin, and the rotation drive unit 34 of the third cutout unit 31 As shown in FIG. 4C, the correspondence relationship between the rotation speed and the supply capacity is a substantially straight line passing through the point where the rotation speed is 500 rpm (1500 rpm) and the supply capacity is 15 kg / h (45 kg / h) and the origin. The rotation speed of the rotation drive unit 44 of the fourth cutout part 41 and the supply capacity As shown in FIG. 4D, the correspondence relationship is expressed as a substantially linear calibration curve passing through the point where the rotational speed is 220 rpm (660 rpm) and the supply capacity is 15 kg / h (45 kg / h) and the origin. Is done. Discrete values of one point or a plurality of points on these calibration curves are stored as respective initial calibration data.
In FIG. 4, calibration curves representing the respective initial calibration data are shown in a substantially straight line for convenience, but these calibration curves have a smaller increase in supply capacity as the rotational speed increases logarithmically. Tends to be a curve.

The operation panel 53 includes a plurality of operation keys as shown in FIG. In the illustrated example, a setting key 54 for setting and inputting various preset items, a calibration mode key 55 for accepting an input of execution of a calibration mode, and a rotary drive unit of each cutting unit prior to calibration are activated in advance. A filling key 56 as a filling operation unit for receiving an input for making a calibration, a calibration start key 57 for receiving an input for operating a rotation driving unit for calibration, and a calibration value for receiving an input of the mass of the discharged particulate material An input key 58, a confirmation mode key 59 for receiving an input for executing the calibration data confirmation mode, and the like are provided.
The operation panel 53 may include input units such as operation buttons, numeric keys, and a keyboard that constitute each operation key. However, from the viewpoint of operability, the operation panel 53 is a touch panel type in which the screen display is switched according to various modes. It is good.

Next, an example of the basic operation executed in the powder material blending and supplying apparatus 1 according to the present embodiment having the above-described configuration will be described with reference to FIGS.
In this operation example, various preset items are input, and after various setting values are stored, in the initial preparation operation stage, the calibration mode is executed to update the preset initial calibration data. . In this operation example, calibration data confirmation mode for updating the number of revolutions can be further executed by performing calibration for further confirmation at the number of revolutions corresponding to the required supply capacity determined based on the updated calibration data. It is said. When the calibration data is updated and then discharged, the rotation drive units of the respective supply units are synchronously operated at the respective rotational speeds corresponding to the required supply capacity of the respective supply units until a predetermined one batch supply time elapses. The operation is performed to discharge the particulate material from each supply unit, mix in the input storage unit 60, and execute the steady operation mode of supplying from the input storage unit 60 toward the supply destination (injection molding machine 6). ing.
In the calibration mode, details will be described later, but at a single calibration rotation speed corresponding to a single necessary supply capacity in each supply unit set based on predetermined required supply data input from the operation panel 53. The rotary drive part of the cutting part of each supply part is operated individually until a predetermined calibration time elapses, and the granular material in each storage part is discharged. And if the input of the mass of the granular material for each discharged supply unit is received, the initial calibration data of each supply unit is obtained based on the input mass and the calibration time and the calibration rotation speed. Each is updated.

<Various presets>
First, at an appropriate time after the composition supply device 1 is activated, various preset items are input from the various setting keys 54 of the operation panel 53 and the various preset values are stored in the storage unit 52 as shown in FIG. .
In this operation example, since the batch supply mode is adopted, one batch supply amount supplied per batch is input and stored. This one-batch supply amount can be appropriately set according to the capacity of the input storage section 60 (capacity from the required level of the material to the full level) and the like. In this operation example, as an example, the description will be made assuming that the supply amount of one batch is 250 g.
In this batch supply amount, a lower limit value and an upper limit value may be stored in advance, and a supply amount less than the lower limit value or a supply amount exceeding the upper limit value may not be input.

  Also, the mixing ratio of each material is inputted and stored. In this operation example, the natural material, the pulverized material, and the master batch material are discharged from each supply unit as the powder material and supplied to the input storage unit 60. The mixing ratio of these materials is taken as an example, and the master batch material: It demonstrates as a pulverized material: natural material = 1: 10: 30. Moreover, as a supply part which measures and supplies these three types of granular material to each, the 1st supply part 10 for masterbatch materials, the 3rd supply part 30 for pulverized materials, and the 4th supply part 40 for natural materials An example using this will be described. As described above, the blending and supplying apparatus 1 according to the present embodiment can also perform metering or blending using only one or a plurality of feeding units among the plurality of feeding units. For example, in addition to the above three types of granular material, in addition to the above, other master batch materials, additives, etc. may be used in addition to the above, the second supply unit 20 may be used. . Furthermore, it is also possible to provide an embodiment in which five or more supply units are provided and five or more kinds of granular material are blended and supplied.

Also, one batch supply time per batch is input and stored. In this operation example, as an example, the description will be made assuming that one batch supply time is 15 seconds.
The one-batch supply time is set by calculating a lower limit value and an upper limit value based on the cut-out capability of each of the cut-out parts 11, 21, 31, 41, the one-batch supply amount, the blending ratio, and the like. You may make it display on the operation panel 53 as possible range. In this case, the supply time less than the lower limit value or the supply time exceeding the upper limit value may not be input.

If the input items are input and stored, the CPU 51 automatically calculates a single required supply capacity in each of the supply units 10, 30, and 40 and stores the calculated required supply capacity in the storage unit 52. That is, in this operation example, the single required supply capacity of each of the supply units 10, 30, and 40 is set as a predetermined required supply data input as a preset item from the operation panel 53, 1 batch supply amount, and An automatic calculation is made based on one batch supply time.
For example, as described above, when one batch supply amount is 250 g and the blending ratio is master batch material: pulverized material: natural material = 1: 10: 30, and when one batch supply time is 15 seconds, one batch supply Based on the amount and the mixing ratio, the supply amount that needs to be supplied per batch in each of the supply units 10, 30, and 40 is calculated, and if this is divided by one batch supply time, the first supply unit 10 The required supply capacity is about 1.46 kg / h, the required supply capacity of the third supply unit 30 is about 14.6 kg / h, and the required supply capacity of the fourth supply unit 40 is about 43.9 kg / h.
That is, a single required supply in each of the supply units 10, 30, and 40 required to supply one batch supply amount (250 g) of the blended material at the above mixing ratio during one batch supply time (15 seconds). Calculate and store abilities.
Each supply unit 10, 30, 40 inputs each supply amount that needs to be supplied per batch, and these and the supply time per batch are used as necessary supply data, and based on these, each supply unit 10 , 30, and 40 can be automatically calculated.

If each of the required supply capacities is stored, a single calibration rotation speed in each of the supply units 10, 30, 40 is set based on these, and stored in the storage unit 52.
The single calibration rotation speed in each of the supply units 10, 30, and 40 is a value corresponding to each required supply capacity with reference to the calibration data before update (in the present operation example, each initial calibration data described above). And may be stored in the storage unit 52.
For example, as shown in FIG. 4 (a), referring to the initial calibration data of the first cutout section 11 of the first supply section 10, a value corresponding to the required supply capacity (1.46 kg / h) is obtained. It becomes 593 rpm, and this is stored as a single calibration rotation number of the rotation drive unit 14 of the first cutout unit 11. Further, as shown in FIG. 4C, if the initial calibration data of the third cutout part 31 of the third supply part 30 is referred to, a value corresponding to the required supply capacity (14.6 kg / h) is obtained. It becomes 488 rpm, and this is stored as a single calibration rotation number of the rotation drive unit 34 of the third cutout unit 31. As shown in FIG. 4 (d), referring to the initial calibration data of the fourth cutout section 41 of the fourth supply section 40, a value corresponding to the required supply capacity (43.9 kg / h) is obtained. This becomes 644 rpm, and this is stored as a single calibration rotation number of the rotation drive unit 44 of the fourth cutout unit 41.

It should be noted that an alarm, an error message, or the like, unless the input items in the various preset settings are input until the predetermined time has elapsed after the composition supply apparatus 1 is started or before the calibration mode described later is executed. May be displayed on the operation panel 53 or may be sounded from a notification means such as a speaker to prompt input.
Moreover, it is not necessary to input each input item among the various preset items described above in the above-described order, and may be input in any order.
In addition, prior to the execution of the calibration mode described later, at the time after the formulation supply device 1 is started, the above-described transport replenishment operation is executed, and the storage units 15, 35, 45 of the supply units 10, 30, 40 are caused to execute. Each material may be stored.

<Calibration mode>
As described above, when various preset items are input and set and various set values are stored, the calibration mode is executed according to a predetermined calibration mode execution program as shown in FIG. In the following, a case will be described in which calibration data is updated in each supply unit in the order of the first supply unit 10, the third supply unit 30, and the fourth supply unit 40.
The execution of the calibration mode is started by pressing the calibration mode key 55 on the operation panel 53 (step 100). When the calibration mode key 55 is depressed, the calibration box 66 is inserted into the box insertion opening 63 (step 101), and the filling key 56 is depressed (step 102), the first supply unit 10 is rotationally driven. The unit 14 is operated to rotate the screw 12 of the first supply unit 10 to pre-fill the trough 13 of the first supply unit 10 with the master batch material ((step 103) pre-filling step).

  In step 101, whether or not the calibration box 66 is inserted may be determined based on the detection signal of the calibration box sensor 65 described above (the same applies to step 104 and step 112 in FIG. 7 described later). . Further, after the calibration mode key 55 is pressed, if the calibration box 66 is not inserted until a predetermined time elapses, an error message or the like may be output or the time may be increased ( Step 104 described later and step 112 in FIG. 7 may be substantially the same). Also in step 102, if the calibration key 66 is inserted and the filling key 56 is not pressed down until a predetermined time elapses, an error message or the like is output or the time is increased. (You may make it substantially the same also in step 105 mentioned later and step 113 of FIG. 7).

Further, in step 103, the pre-filling by the push-down operation of the filling key 56 is pushed down until the trough is sufficiently filled by the visual observation of the user, for example, until the granular material falls to the calibration box 66. It is good also as an aspect which makes a user continue operation. Alternatively, a predetermined filling time is set in advance, and if the filling key 56 is pushed down, the rotary drive unit is operated until the filling time elapses, and the trough is prefilled with the granular material. It is good also as an aspect. Note that the rotational speed of the rotation drive unit at this time may be the calibration rotational speed stored as described above, or the rotational speed at the time of pre-filling may be set in advance.
If the above pre-filling is performed, the granular material may fall and be accommodated in the calibration box 66, so that the granular material in the calibration box 66 can be removed by detaching the calibration box 66. preferable.

Next, when the calibration box 66 is inserted (step 104) and the calibration start key 57 is depressed (step 105), the rotation drive unit 14 of the first cutout unit 11 stored as described above is simply stored. The rotation driving unit 14 of the first cutting unit 11 is operated at 593 rpm as one calibration rotation number until a predetermined calibration time elapses, and the master batch material is discharged and accommodated in the calibration box 66 (step 106). Discharge process).
If the above-mentioned predetermined calibration time is too short, there is a tendency for variations to occur due to the rise time of the rotary drive unit or the amount of head drop after operation stop.On the other hand, if it is too long, the calibration mode When the execution time becomes long and it is necessary to discard the granular material used for the calibration, the discarded amount of the granular material tends to increase. Therefore, it may be about several seconds to 10 seconds. In this operation example, the calibration time is described as 5 seconds as an example.
Then, the calibration box 66 is detached from the box insertion opening 63, and the mass of the master batch material accommodated in the calibration box 66 is measured by an electronic balance or the like. In this operation example, it is assumed that the mass of the master batch material is 2.2 g as an example.

Next, if the mass of the granular material measured as described above is input from the calibration value input key 58 as a calibration value ((Step 107) mass input step), the calibration time (593 rpm), the calibration time Calibration data is updated based on (5 seconds) and the calibration value (2.2 g) ((Step 108) calibration data update step). That is, the supply capacity at the time of executing the calibration mode is calculated from the calibration value and the calibration time. In the above example, it is 1.584 kg / h. Then, the preset initial calibration data indicating the correspondence between the rotation speed of the first cutting section 11 of the first supply section 10 and the supply capacity is updated from the supply capacity and the calibration rotation speed. Accordingly, as shown in FIG. 8A, the calibration curve representing the calibration data of the first cutout section 11 of the first supply unit 10 is a one-dot chain line from the calibration curve representing the initial calibration data indicated by the two-dot chain line. It will be shown in In this operation example, in the operation control based on the initial calibration data, the supply is excessive.
And the rotation speed of the rotation drive part 14 of the 1st cutting part 11 according to the required supply capability of the 1st supply part 10 with reference to this updated calibration data is determined, and it stores in the memory | storage part 52 (( Step 109) Required rotational speed determination step). That is, when the required supply capacity is 1.46 kg / h as described above, the rotation speed when the rotation drive unit 14 is operated is 547 rpm based on the updated calibration data (see FIG. 8A). ). Such determination of the rotational speed is performed by automatic calculation of the CPU 51 with reference to the updated calibration data.
If the calibration value is not input before the predetermined time elapses after the calibration start key 57 is pressed, an error message or the like is output or the time is increased as described above. (It may be substantially the same in step 115 of FIG. 7 described later).

As described above, the calibration data of the first cutting unit 11 of the first supply unit 10 is updated, the rotation speed is stored, and there is another material (a supply unit that supplies another material that has not been calibrated) (step 110). ), Returning to step 101, the calibration data of other supply units (third supply unit 30) is updated in the same manner as described above (steps 101 to 109).
In the calibration of the third supply unit 30, if the calibration value is 18 g, the supply capability during the calibration mode is calculated from the calibration value and the calibration time as described above. In this example, it is 12.96 kg / h. Then, from this supply capacity and the above-described single calibration rotation speed (488 rpm) of the third supply section 30, a correspondence relationship between the rotation speed of the third cutting section 31 of the third supply section 30 and the supply capacity is shown. The initial calibration data set in advance is updated. As a result, as shown in FIG. 8B, the calibration curve representing the calibration data of the third cutting section 31 of the third supply section 30 is a one-dot chain line from the calibration curve representing the initial calibration data indicated by the two-dot chain line. It will be shown in In this operation example, supply is insufficient in the operation control based on the initial calibration data.
Then, with reference to the updated calibration data, the number of rotations of the rotation drive unit 34 of the third cutout unit 31 corresponding to the required supply capacity of the third supply unit 30 is determined and stored in the storage unit 52 (step) 109). That is, when the required supply capacity is 14.6 kg / h as described above, the rotation speed when operating the rotation drive unit 34 is 550 rpm based on the updated calibration data (see FIG. 8B). ).

Further, as described above, if the calibration data of the third extraction unit 31 of the third supply unit 30 is updated, the rotation speed is stored, and there is another material (a supply unit that supplies another material that has not been calibrated) ( Step 110), returning to step 101, the calibration data of other supply units (fourth supply unit 40) is updated in the same manner as described above (steps 101 to 109).
In the calibration of the fourth supply unit 40, if the calibration value is 58 g, the supply capability at the time of the calibration mode is calculated from the calibration value and the calibration time as described above. In this example, it is 41.76 kg / h. Then, from this supply capacity and the above-described single calibration rotation speed (644 rpm) of the fourth supply section 40, a correspondence relationship between the rotation speed of the fourth cutting section 41 of the fourth supply section 40 and the supply capacity is shown. The initial calibration data set in advance is updated. Accordingly, as shown in FIG. 8C, the calibration curve representing the calibration data of the fourth cutout section 41 of the fourth supply unit 40 is a one-dot chain line from the calibration curve representing the initial calibration data indicated by the two-dot chain line. It will be shown in In this operation example, supply is insufficient in the operation control based on the initial calibration data.
Then, with reference to the updated calibration data, the number of rotations of the rotation drive unit 44 of the fourth cutting unit 41 corresponding to the required supply capacity of the fourth supply unit 40 is determined and stored in the storage unit 52 (step) 109). That is, when the necessary supply capacity is 43.9 kg / h as described above, the rotation speed when the rotation drive unit 44 is operated is 677 rpm from the updated calibration data (see FIG. 8C). ).

If there is another material (a supply unit that supplies another material that has not been calibrated) (step 110), the process returns to step 101. However, in this operation example, since there is no other material, the calibration mode is completed as described above. .
By operating each rotational drive unit 14, 34, 44 at a rotational speed corresponding to the required supply capacity determined based on the calibration data updated as described above, it is relatively accurate in the vicinity of the required supply capacity. It is possible to perform a simple supply.
In this operation example, a calibration data confirmation mode for further improving the supply accuracy can be executed. This calibration data confirmation mode must be set based on the calibration data before update, especially when the deviation between the calibration data before update (in the above example, initial calibration data) and the calibration data after update is large. When the degree of deviation is large between the calibration speed according to the supply capacity and the speed according to the required supply capacity determined based on the updated calibration data, etc., when operating at the determined speed Since it is considered that an error may occur in the supply capacity, it is feasible. In this calibration data confirmation mode, after executing the calibration mode, the calibration for further confirmation is performed at the number of rotations corresponding to the required supply capacity determined based on the calibration data updated as described above, and the rotation is performed. I try to update the number.

<Calibration data confirmation mode>
By executing the calibration mode, the number of rotations corresponding to each necessary supply capacity in each supply unit 10, 30, 40 is stored, and then the confirmation mode key 59 is depressed as shown in FIG. 111), the calibration box 66 is inserted in the same manner as described above (step 112), and if the start key (which may be common with the calibration data confirmation operation unit, for example, the calibration start key 57) is depressed (step 111). 113), the rotational drive unit is operated at the rotational speed stored as described above until the confirmation time elapses, and the material is discharged and accommodated in the calibration box 66 (step 114).
The confirmation time may be the same time as the calibration time or may be the same time as one batch supply time. For example, taking the first supply unit 10 as an example, if the batch supply time is 15 seconds and the stored rotation speed is 547 rpm as described above, the rotation drive unit 14 of the first cutout unit 11 is changed. You may make it operate | move at 547 rpm until 15 second passes.
Then, as in the calibration mode, the calibration box 66 is detached from the box insertion opening 63, and the user measures the mass of the material accommodated in the calibration box 66 with an electronic scale or the like.

Next, if the mass of the particulate material measured as described above is input as a confirmation value via, for example, the calibration value input key 58 (step 115), based on this confirmation value (confirmation data) The rotational speed stored as described above, that is, the rotational speed corresponding to the necessary supply capacity is updated (step 116).
For example, when each of the preset items is the above values, the first supply unit 10 receives about 6.09 g (necessary supply amount per batch) in 15 seconds (1 batch supply time). The master batch material needs to be discharged, and this may be used as a target value, and the rotation speed of the rotation drive unit may be updated (offset) by automatic calculation from the difference between this and the confirmation value. That is, the rotational speed may be increased if the confirmation value is smaller than the target value, and the rotational speed may be decreased if the confirmation value is larger than the target value.

Then, as in the calibration mode, if there is another material (a supply unit that supplies another material that has not been confirmed) (step 117), the process returns to step 112, and the other supply unit (for example, the third unit) Update (offset) of the rotational speed of the supply unit 30 and the fourth supply unit 40) is executed (steps 112 to 116).
In the above example, the confirmation time is one batch supply time, and the confirmation data is the mass of the material discharged during this confirmation time. For example, the target value is not the necessary supply amount but the necessary supply. In the case of the capacity, the value obtained by dividing the confirmation value by the confirmation time may be used as confirmation data, and the rotational speed may be updated by comparing this with the required supply capacity.
In step 111, if the confirmation mode key 59 is not depressed, that is, if the confirmation mode key 59 is not depressed after the calibration mode is executed, the calibration data confirmation mode is not executed. You may make it permit the transfer to the steady operation mode mentioned later. Alternatively, the transition to the steady operation mode may be disabled until the calibration data confirmation mode is executed.
Further, steps 112 and 113 may be omitted, and the confirmation mode key 59 may function as a calibration data confirmation operation unit.

<Steady operation mode>
After executing the calibration mode or after executing the calibration data confirmation mode, if a pressing operation of a steady operation key or the like provided on the operation panel 53 is performed, the illustration is omitted, but the steady operation mode is entered. Transition.
In this steady operation mode, when a material request signal is output from the material sensor 69 provided in the input storage unit 60, the rotation driving units 14, 34, 44 of the supply units 10, 30, 40 are activated substantially simultaneously. At the same time, the rotational drive units 14, 34, 44 are operated at the respective rotational speeds stored as described above until one batch supply time elapses, and are simultaneously stopped. That is, each material is discharged synchronously from each supply unit 10, 30, 40. Thereby, in the charging storage part 60, the granular material material mix | blended by the desired mixing | blending ratio is temporarily stored, and it supplies to the injection molding machine 6 as a supply destination via this charging storage part 60. FIG.
And each time it is consumed in the injection molding machine 6, the storage level of the material in the input storage part 60 falls, and whenever a material request signal is output from the material sensor 69, each supply part 10,30,40 is similar to the above. The operation of discharging each material synchronously is repeatedly executed.

In the above operation example, an example in which calibration in each supply unit is executed only once in the calibration mode is shown, but multiple calibrations may be executed in each supply unit. For example, step 104 to step 106 are repeatedly executed multiple times, and the average value of the discharged mass is input to the user as a calibration value in step 107, or step 104 to step 107 are repeatedly executed multiple times. The average value of the calibration values may be automatically calculated by the CPU 51, and this average value may be used as a calibration value for updating the calibration data in step 108.
In addition, after performing steady operation in this way, when changing materials, increasing or decreasing the number of materials, changing the blending ratio, etc., in the same manner as described above, various pre-set items etc. are input and the calibration mode or this is entered. In addition, the calibration data confirmation mode may be executed to update the calibration data and the like. At this time, the respective calibration rotation speeds corresponding to the respective required supply capacities may be determined based on the calibration data before update, or the calibration data before update is reset and each calibration data is reset based on the initial calibration data. You may make it determine each calibration rotation speed according to a required supply capability.

As described above, according to the powder material blending and supplying apparatus 1 according to the present embodiment, the calibration data in each of the supply units 10, 20, 30, and 40 can be easily updated. That is, it is possible to improve workability when updating calibration data that needs to be performed relatively frequently, such as every time the material is changed. Moreover, as a result, the granular material used for calibration can be reduced, and when it is necessary to discard this, the amount of discard can be reduced.
In this operation example, the required supply capacity in each supply unit is calculated as a required supply amount (calculated from one batch supply amount and a blending ratio) as predetermined required supply data input as a preset item from the operation panel 53. And the supply time, and the calibration mode is executed at a single calibration rotation speed corresponding to the calculation time. Therefore, this single calibration rotation speed corresponds to the required supply capacity that is extremely close to the range of actual use, so the accuracy of the updated calibration data can be improved and more accurate supply is performed. be able to. In other words, calibration is not performed at a plurality of different rotation speeds according to a wide range of required supply capacities assuming various usage modes, but a calibration rotation speed according to a single required supply capacities corresponding to actual use. Since the calibration mode is executed in the above, it is possible to determine the number of revolutions according to the required supply capacity based on the updated calibration data, and to supply at that number of revolutions, thereby enabling accurate supply. Become.

Furthermore, in this operation example, the operation panel 53 is provided with a filling key 56 for accepting an input for pre-filling the cutout parts 11, 21, 31, 41 with the powdery material, and the cutout part is provided with a powdery body. Calibration is performed after the material is filled. That is, after the powder material is stably discharged from the cutout portion, the rotation drive portion is operated for calibration. According to such a configuration, a comparatively accurate calibration value (discharge amount) can be obtained with a comparatively small number of calibrations, and calibration data can be updated based on the calibration value. The calibration data can be updated and set with less error by executing the above. Therefore, the workability at the time of updating calibration data that needs to be performed relatively frequently, such as every time the material is changed, can be dramatically improved.
Furthermore, in this operation example, the calibration data confirmation mode can be executed after the calibration mode is executed, so that more accurate supply can be performed. In other words, the rotation speed of the rotation drive unit according to the required supply capacity determined from the calibration data updated by executing the calibration mode can be updated again by executing the calibration data confirmation mode, so that supply with less error is possible. It becomes.

Moreover, according to the mixing | blending supply apparatus 1 of the granular material which concerns on this embodiment, although the calibration data in each supply part 10,20,30,40 can be updated easily, each supply part 10,20, Since 30 and 40 can be supplied with less error, the powder material can be blended at a blending ratio with less error.
Furthermore, in this operation example, the rotational drive units 14, 34, 34 of the cut-out portions 11, 31, 41 of each supply unit (in the above example, the first supply unit 10, the third supply unit 30, the fourth supply unit 40). 44 is operated synchronously and discharged so that when it is introduced into the input storage section 60, a plurality of types of granular material are appropriately mixed in the input storage section 60, and the downstream side It is also possible not to provide mixing means or the like. That is, it is possible not to provide mixing means such as a mixing drum or an airflow mixing hopper between the injection molding machine 6 as the supply destination and the compounding supply device 1, and the compounding supply device 1 is as shown in the figure. It is also possible to install directly on the injection molding machine 6.

In the above-described operation example, the example in which the number of revolutions according to the required supply capacity is updated in the calibration data confirmation mode has been described. However, the calibration data is further updated based on the confirmation data. Is also possible. Alternatively, instead of automatically updating the rotation speed and calibration data as described above, it is possible to refer to the confirmation value and the like so that the rotation speed of the rotation drive unit can be finely adjusted by a user operation.
In the above operation example, an example in which the filling step of pre-filling the cut-out part with the granular material in the calibration mode and the filling key 56 for that purpose is provided on the operation panel 53 has been described. It may be. In this case, from the viewpoint of reducing the error, etc., it is preferable to repeatedly execute the calibration a plurality of times in each supply unit as described above.

In the above operation example, after the calibration mode is executed, the calibration data confirmation mode can be further executed, and the calibration data confirmation operation unit and the confirmation mode key 59 for that purpose are provided on the operation panel 53. May not be provided.
Further, in the above operation example, an example is shown in which the rotation driving unit of the cutting unit of each supply unit is activated substantially simultaneously and each material is discharged synchronously, but is not limited to such a mode. . For example, it is good also as an aspect which operates the rotational drive part of the cut-out part of each supply part separately separately. In this case, you may make it provide a mixing means further in an input storage part or its downstream.

Further, in the above operation example, a step of detecting whether or not the calibration box 66 is inserted is provided from the viewpoint of preventing the unblended powder material from being supplied to the supply destination, and the calibration box sensor 65 is provided in the formulation supply apparatus 1. Although provided examples are shown, these may not be provided.
Further, in the above example, an example in which a calibration box insertion portion 62 having a box insertion opening 63 is provided in the input storage portion 60 of the blending supply apparatus 1 and a calibration box 66 to be inserted into and removed from the box insertion opening 63 is described. However, such a calibration box 66 may not be provided. In this case, you may make it employ | adopt a commercially available bag, a dish, etc. as a sample storage means.

Next, another example of the basic operation of the calibration mode executed in the blending supply apparatus 1 according to the present embodiment will be described with reference to FIGS. 9B and 9C.
FIG. 9B is a table in which the storage targets and recommended supply capacities in each supply unit are associated with each other, and FIG. 9C is a table of preset required supply capacities in each supply device used in the basic operation example. It is a table | surface which matches and shows an example and an example of a calibration rotation speed.
Note that the description of the same operation as the above operation example will be omitted or briefly described.
In the above operation example, an example in which a single required supply capacity in each of the supply units 10, 20, 30, and 40 is set based on the required supply amount and one batch supply time input as preset items from the operation panel 53 will be described. However, in this operation example, this single required supply capacity setting mode is different.

In this operation example, a single required supply capacity within the range of the recommended supply capacity determined according to the usage mode is stored in the storage unit 52 in advance.
This recommended supply capacity can be set as appropriate within the range of the cut-out capability (see FIG. 9 (a)) of each of the above-mentioned cut-out parts 11, 21, 31, 41. In the specification, for example, it may be determined according to the type of the granular material to be handled.
For example, when the blending and feeding apparatus 1 according to the present embodiment is used for blending and feeding a natural material, a pulverized material, and a masterbatch material of a synthetic resin material as described above, as shown in FIG. In addition, the recommended supply capacity of each of the cutout portions 11, 21, 31, 41 may be determined in correspondence with each material. These types of materials tend to contain more natural material than other materials, then tend to contain more crushed material, and less masterbatch material than other materials. Tend. Therefore, in this operation example, a cutout portion that is assumed to be used corresponding to each material is set, and a recommended supply capacity is determined corresponding to the cutout portion.

In the illustrated example, it is assumed that the first cut-out part 11 and the second cut-out part 21 of the first supply part 10 and the second supply part 20 are desirably used for supplying the master batch material, and their recommended supply capacity. Is set to 1 kg / h to 3 kg / h (see also thick solid lines in FIGS. 4A and 4B). In addition, it is assumed that the third cutout portion 31 and the fourth cutout portion 41 of the third supply portion 30 and the fourth supply portion 40 are desirably used for supplying the pulverized material, and the recommended supply capacity is 6 kg. / H to 24 kg / h is shown (see also the thick solid lines in FIGS. 4C and 4D). In addition, assuming that the third cutout part 31 and the fourth cutout part 41 of the third supply part 30 and the fourth supply part 40 are desirably used for the supply of natural materials, the recommended supply capacity is An example of 30 kg / h to 60 kg / h is shown (see also the thick solid lines in FIGS. 4C and 4D).
The recommended supply capacity is set in accordance with the specifications of the blend supply apparatus 1, and need not be stored in a storage unit or the like. Alternatively, it may be stored in a storage unit, and a warning or the like may be output so as not to be used outside the range of the recommended supply capacity. Moreover, it is good also considering the ability to cut out and the recommended supply capability as the same value.

  For example, as shown in FIG. 9C, a single required supply capacity set within the range of the recommended supply capacity is set to a value approximately in the middle of each recommended supply capacity as a single required supply capacity. The data may be stored in the storage unit 52. Then, when setting a single calibration rotation speed according to this single required supply capacity, it is set with reference to the above-mentioned initial calibration data (see FIG. 4) in substantially the same manner as in the above operation example. do it. In the illustrated example, when the target material is a master batch material, the required supply capacity is set to 2 kg / h, the calibration rotation speed of the first cutout section 11 is 810 rpm, and the calibration rotation of the second cutout section 21 is performed. An example in which the number is 300 rpm is shown. When the target material is a pulverized material, the required supply capacity is 15 kg / h, the calibration rotational speed of the third cutting part 31 is 500 rpm, and the calibration rotational speed of the fourth cutting part 41 is An example of 220 rpm is shown. When the target material is a natural material, the required supply capacity is 45 kg / h, the calibration rotational speed of the third cutting part 31 is 1500 rpm, and the calibration rotational speed of the fourth cutting part 41 is An example of 660 rpm is shown (see also FIG. 4).

Moreover, in this operation example, the material selection operation part which makes the operation panel 53 select thru | or input as a preset item the kind of granular material as a storage object stored by each supply part 10,20,30,40. Is provided. In this case, for example, the various setting keys 54 may function as a material selection operation unit. And in this operation example, the input of this material selection operation part is received and the setting of the single required supply capability in each supply part 10,20,30,40 is performed. That is, in this operation example, the type of powder material is set as predetermined required supply data, and a single required supply capacity is set based on this.
Even with such a required supply capacity setting mode, it is possible to execute substantially the same operation as in the above-described operation example, and there are substantially the same effects. That is, since the calibration mode can be executed with a single calibration rotation speed corresponding to the required supply capacity close to the actual use range, the accuracy of the updated calibration data is improved in the vicinity of the range, and there are few errors. Accurate supply can be performed.

In this operation example, an example in which a material selection operation unit for selecting or inputting a target material as a preset item has been described, but instead of the type of material, for example, a large supply material, a medium supply material, a small supply material, You may make it provide the operation part in which selection operation, such as a supply material, is possible.
Further, in this operation example, when the calibration data is updated and then the rotation speed of the rotation drive unit of each supply unit is determined with reference to the calibration data, the necessary supply amount input as a preset item and 1 The actual required supply capacity is calculated based on the batch supply time in substantially the same manner as in the above operation example, and the number of revolutions corresponding to the actual required supply capacity is determined with reference to the updated calibration data and stored. Good. Even in such a case, since the calibration data is updated at the calibration rotational speed corresponding to the single required supply capacity set within the range of the recommended supply capacity, it is relatively within the range of the recommended supply capacity. Therefore, it is possible to supply with less error.
In addition, instead of setting the required supply capacity in each of the above examples, when the supply mode performed by the blending and supplying apparatus 1 is continuous supply or the like, the processing amount processed per unit time (processing) (Capacity) or the like may be input as necessary supply data, and the necessary supply capacity may be set so as to be a value commensurate with the processing capacity.

Further, instead of the above-described example, the required supply capacity is set based on the required supply data input from the operation panel 53 and the calibration rotation speed corresponding to this is determined. A single required supply capacity may be set in advance within the range of specifications assumed to be set, and a single calibration rotation speed corresponding to this may be set and stored in advance. For example, in the same manner as described above, the recommended supply capacity of each supply unit is determined based on the cut-out capability of each cut-out part, and the single required supply capacity is set within the range of the recommended supply capacity. It may be. For example, a value approximately in the middle of the recommended supply capacity may be estimated in advance as a necessary supply capacity and set in advance, and a single calibration rotation speed corresponding to this may be set in advance.
With such a configuration, it is possible to eliminate the need for various kinds of prior settings as described above, and it is possible to perform the calibration mode with a simple operation, but with relatively little error according to actual use. In general, accurate supply can be performed within the assumed range of use.

In addition, in the said embodiment, although the mixing | blending supply apparatus 1 provided with four supply parts is illustrated, it is good also as what was provided with at least two supply parts.
Moreover, in the said embodiment, although the mixing | blending supply apparatus 1 provided with the several supply part was demonstrated, each supply part is grasped | ascertained as a supply apparatus which carries out fixed quantity supply or metering supply of granular material toward a supply destination. You may do it. In this case, the supply device may be provided with a control unit that executes the various operations and modes as described above, an operation unit that receives various input operations, a storage unit, and the like.

DESCRIPTION OF SYMBOLS 1 Mixing supply apparatus of granular material 10 1st supply part (supply apparatus)
DESCRIPTION OF SYMBOLS 11 1st cutting-out part 14 1st rotation drive part 15 1st storage part 20 2nd supply part (supply apparatus)
21 2nd cutting-out part 24 2nd rotation drive part 25 2nd storage part 30 3rd supply part (supply apparatus)
31 3rd cut-out part 34 3rd rotation drive part 35 3rd storage part 40 4th supply part (supply apparatus)
41 4th cutting-out part 44 4th rotation drive part 45 4th storage part 51 CPU (control part)
53 Operation panel (operation unit)
56 Filling key (filling operation part)
57 Calibration start key (calibration data confirmation operation part)
59 Confirmation mode key (calibration data confirmation operation section)
60 Input storage section

Claims (6)

By changing the number of revolutions per unit time of the rotation drive part of the cutout part provided in the lower part of the storage part for storing the granular material, the supply amount of the granular material supplied per unit time can be changed. An apparatus for supplying granular material made possible,
Operate the rotary drive unit at a single calibration rotation speed according to a single required supply capacity set in advance within the range of the cutout capability of the cutout unit until a predetermined calibration time elapses, An operation unit that receives an input for discharging the granular material stored in the storage unit and receives an input of the mass of the discharged granular material,
The rotation drive unit is operated based on the discharge input from the operation unit, and based on the input mass, the calibration time, and the calibration rotation number, the rotation number of the rotation drive unit and per unit time. A control unit for executing a calibration mode for updating preset calibration data indicating a correspondence relationship with the supply amount;
An apparatus for supplying granular material, comprising: In claim 1,
The said control part sets the said required supply capability based on the predetermined required supply data input from the said operation part, The supply apparatus of the particulate material characterized by the above-mentioned. In claim 1 or 2,
The operation part is provided with a filling operation part for receiving an input for pre-filling the cut-out part with a granular material,
The control unit operates the rotation driving unit based on an input from the filling operation unit, and operates the rotation driving unit based on the discharge input after the cut-out unit is filled with a granular material. An apparatus for supplying a granular material, wherein: In any one of Claims 1 thru | or 3,
In the operation unit, the rotation drive unit is operated at a rotation speed according to the required supply capacity determined based on the updated calibration data until a predetermined confirmation time elapses and stored in the storage unit. A calibration data confirmation operation unit is provided to accept input for discharging the particulate material,
The control unit operates the rotation drive unit based on the discharge input from the calibration data confirmation operation unit, receives the input of the mass of the discharged granular material through the operation unit, An apparatus for supplying granular material, wherein a calibration data confirmation mode for updating the number of revolutions according to the required supply capacity based on the input mass is further executable.   A supply device for a plurality of granular material according to any one of claims 1 to 4, and an input storage unit for receiving the granular material discharged from each cut-out portion of these supply devices, When discharging from the cut-out portion of the supply device, the rotation drive portion of each cut-out portion is operated synchronously at each rotation speed corresponding to the required supply capacity, and discharged. Mixing and supplying equipment for powder material. By changing the number of rotations per unit time of the rotation drive part of the cutout part provided in the lower part of the storage part for storing the granular material, the supply amount of the granular material supplied per unit time can be changed. A method for supplying granular material, which has been made possible,
The rotary drive unit is operated until a predetermined calibration time elapses at a single calibration rotation speed according to a single required supply capability set in advance within the range of the cutout capability of the cutout unit, A discharge step of discharging the granular material stored in the storage unit;
A mass input step for receiving an input of the mass of the discharged particulate material;
Calibration data for updating preset calibration data indicating the correspondence between the rotation speed of the rotation drive unit and the supply amount per unit time based on the input mass, the calibration time, and the calibration rotation speed Update process;
A method for supplying a granular material, comprising:

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