JP5486862B2 - Material blending supply device and material blending supply method - Google Patents

Description

  The present invention relates to a material blending and supplying apparatus and a material blending and supplying method for blending a plurality of types of granular materials at a predetermined ratio and feeding them to a molding machine.

  Conventionally, as a material blending and feeding device that blends multiple types of granular materials at a predetermined ratio and supplies the blended materials to a molding machine, multiple types of granular materials are respectively provided. Each powder material supplied from a plurality of material supply machines to be stored is weighed in a single batch type weighing machine equipped with sensors such as load cells so as to have a preset mass ratio. It has been known. One batch amount of material measured by the weighing machine is mixed by a mixing means such as a mixing drum (mixing case) on the downstream side of the weighing machine and supplied to a supply destination such as a molding machine. (For example, refer to Patent Document 1 below).

JP 2009-23093 A

By the way, in the material blending and supplying apparatus as described above, in general, it can be applied to various operation modes in various molding machines and molding machines, generally from the processing capacity of materials processed per unit time in the molding machine. However, the material supply capability of the material supply device itself that can be supplied to the molding machine is set sufficiently large. For example, in order to be able to respond quickly to requests from the molding machine side, the batch quantity to be weighed at once in the weighing machine is set to be relatively large, and also in each part (storage part such as a hopper on the downstream side of the weighing machine) Then, an amount corresponding to the batch amount (one batch amount or a plurality of batch amounts) is stored. In addition, when there is no more material in each part after the weighing machine (the weighing machine and the storage part), the material is measured and replenished immediately, and each part is made to wait for the material.
In such cases, when the production lot is changed, such as changing the material, changing the mass ratio of each material, changing the molded product (changing the mold), or at the end of molding such as at the end of the operation, The materials that are waiting and held in each of these parts have already been mixed with a plurality of types of materials, so that there is a problem that reuse is difficult and the amount to be discarded increases.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a material blending supply device and a material blending supply method that can reduce blended materials at the end of molding.

  In order to achieve the above object, the material blending and supplying apparatus according to the present invention has preset each granular material supplied from a plurality of material supply machines that respectively store a plurality of types of granular material. A material blending and feeding device that feeds to a molding machine a material that is weighed in a weighing machine so as to have a mass ratio and mixed by a mixing means, and a signal generator that generates a predetermined molding end scheduled signal, and the molding machine A storage unit installed on the upper side of the material input port, standby amount detection means for detecting a standby amount of material from the weighing machine to the upstream side of the storage unit, and completion of the molding based on a predetermined program Calculate the required amount of material required in the molding machine by the end of molding after receiving the scheduled signal, subtract the standby amount from this required amount, and calculate the remaining required number of measurements according to the remaining required amount Calculate the rest The metering of the main metering number is performed in the weighing machine, characterized in that it comprises a metering count control means for stopping the subsequent measurement operation.

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, or a metal material, a semiconductor material, a wood material, a chemical material, a food material, may be sufficient.

In the material blending and supplying apparatus according to the present invention, the storage unit is provided with a material sensor for detecting that the material level has decreased to a predetermined level, and the metering number control means waits for a material waiting below the detection level of the material sensor. An amount may be calculated, and the material standby amount may be included in the standby amount to calculate the remaining necessary amount.
In this material blending and supplying apparatus, the measurement frequency control means calculates the necessary amount by subtracting the amount processed in the molding machine between the molding completion scheduled signal and the material sensor material request signal. You may do it.

  In any one of the above-described material blending and supplying apparatuses according to the present invention, when the molding machine to be supplied is an injection molding machine, the amount of one shot in this injection molding machine and the number of remaining shots after the molding completion scheduled signal are An input operation unit may be further provided. In this case, the required number may be calculated based on the one shot amount input from the operation unit and the number of remaining shots by the measurement number control means.

In any one of the material compounding and supplying apparatuses according to the present invention, a processing capacity detecting means for detecting a processing capacity of a material processed per unit time in the molding machine, and supplying the unit to the molding machine per unit time Based on a predetermined program, the processing capacity is compared with the mixing supply capacity based on a predetermined program, and the mixing supply capacity is more than the processing capacity. And when it can reduce to a predetermined reference | standard, it is good also as a structure further provided with the mixing | blending supply capacity | capacitance control means to update and perform mixing supply so that this mixing | blending supply capacity | capacitance may be decreased.
In this case, the blending supply capacity control means may decrease the blending supply capacity by decreasing the one batch target amount measured by the weighing machine. In addition, the reduction of the one batch target amount is based on the time required for weighing one batch in the weighing machine and the target amount of the one batch before reducing the one batch target amount. The weighing capacity of the material that can be metered per unit time may be calculated, and the one batch target amount may be decreased based on the weighing capacity and the processing capacity.

  In addition, a first standby mode in which the weighing machine waits for a material until a material request signal from the downstream side of the weighing machine is output, and until the signal is output, a material is supplied to the weighing machine. It may be possible to execute the second standby mode in which the weighing is started after the signal is output without waiting for the first time. In this case, the blending supply capacity control means may change the first standby mode to the second standby mode to decrease the blending supply capacity.

  Further, in order to achieve the above object, the material blending and supplying method according to the present invention is configured such that each granular material supplied from a plurality of material supply machines that respectively store a plurality of types of granular material is set in advance. A material blending and feeding method in which a material is weighed in a weighing machine so as to have a mass ratio, and the material mixed by the mixing means is fed to the molding machine, and the upper side of the material inlet of the molding machine from the weighing machine Calculating the standby amount to the upstream side of the storage unit installed in the storage unit and the necessary amount of material required in the molding machine until the end of molding after a predetermined molding end scheduled signal, and the required amount The waiting amount is subtracted from the remaining required number of weighings corresponding to the remaining required amount, and the weighing of the remaining required number of times is performed in the weighing machine, and the subsequent weighing operation is stopped. It is characterized by.

  In the material blending and supplying apparatus according to the present invention, the waiting amount is subtracted from the required amount, a remaining required number of times corresponding to the remaining required amount is calculated, and the remaining required number of times of measurement is measured in the measuring machine. Since the subsequent weighing operation is stopped, the weighing operation can be stopped at an appropriate number of times according to the required amount after the molding completion scheduled signal is output. Therefore, at the end of molding, it is possible to reduce the remaining material substantially corresponding to the blended material that is waiting and held from the weighing machine to the upstream side of the storage unit in the material blending supply device, thereby reducing waste of material. And the amount of waste can be reduced.

  In the material blending and supplying apparatus according to the present invention, the storage unit is provided with a material sensor for detecting that the material level has decreased to a predetermined level, and the material number of times control unit is less than the detection level of the material sensor. If the material standby amount is included in the standby amount and the remaining required amount is calculated, the remaining material substantially corresponding to the material standby amount below the detection level of the storage unit is further reduced. be able to.

Further, in the material blending and supplying apparatus configured as described above, the measurement number control means subtracts the amount processed in the molding machine between the molding completion scheduled signal and the material sensor material request signal. If the amount is calculated, the following effects can be obtained.
In other words, the amount processed in the molding machine between the molding end scheduled signal and the material sensor material request signal corresponds to the material above the detection level of the storage unit material sensor at the time the molding end scheduled signal is output. Then, by subtracting this material component and calculating the necessary amount, the remaining material substantially corresponding to this material can be further reduced.
In other words, in this device, the measurement number control means is the amount processed in the molding machine between the molding completion schedule signal and the material request signal of the material sensor (when the molding completion schedule signal is output). In this case, the remaining amount is calculated by further including the material at the upper part of the detection level of the material sensor in the reservoir in the standby amount.

In any one of the material blending and supplying apparatuses according to the present invention, the molding machine as the supply destination is an injection molding machine, and the amount of one shot in the injection molding machine and the number of remaining shots after the molding completion scheduled signal are input. If the operation unit is further provided and the measurement number control means calculates the required amount based on the one shot amount input from the operation unit and the number of remaining shots, the following effects can be obtained. Play.
That is, since the operation unit for inputting the amount of one shot and the number of remaining shots is provided, the amount of one shot obtained directly from the molded product can be input, and an accurate required amount can be calculated. Also, the number of remaining shots can be input at the user's discretion according to the remaining molding amount.

In any one of the above-described material blending and supplying apparatuses according to the present invention, if the processing capacity detecting unit, the blending and feeding capacity detecting unit, and the blending and feeding capacity control unit are further provided, the following effects can be obtained. .
That is, depending on the processing capacity of the molding machine, by reducing the blending supply capacity of the material blending supply device, it is possible to reduce the blended material that is waiting and held in each part of the material blending supply device. it can. Accordingly, the remaining material can be reduced even when the molding machine is stopped urgently, or when there is an operation mistake or an operation error in the case where a molding completion schedule signal is input by a user operation, for example. .

  In addition, according to the material blending and supplying method according to the present invention, as with the effect exhibited by the material blending and supplying apparatus according to the present invention, at the end of molding, the blended and waited and held from the weighing machine to the storage unit The material (remaining material) can be reduced, the waste of material can be reduced, and the amount of waste can be reduced.

It is a schematic structure figure showing typically an example of the system composition provided with one embodiment of the material combination supply device concerning the present invention. It is a control block diagram of the material mixing and supplying apparatus. It is a schematic time chart for demonstrating an example of the basic operation | movement performed with the same material mixing | blending supply apparatus. (A) is a schematic flowchart showing an example of a basic operation of a processing capacity detection function of a molding machine executed by the material compounding and supplying apparatus, and (b) is a measuring capacity of the measuring machine executed by the material compounding and supplying apparatus. It is a schematic flowchart which shows an example of the basic operation | movement of a detection function. (A) is a schematic flowchart which shows an example of the basic operation | movement of the mixing | blending supply capability change function performed with the same material mixing | blending supply apparatus, (b) is explanatory drawing for demonstrating the example. (A), (b) is a schematic flowchart for demonstrating an example of the basic operation | movement of the measurement frequency control function performed with the same material mixing | blending supply apparatus. (A), (b) is a schematic flowchart for demonstrating other examples of the basic operation | movement of the measurement frequency control function performed with the same material mixing | blending supply apparatus. It is a schematic flowchart for demonstrating the further another example of the basic operation | movement of the measurement frequency control function performed with the same material mixing | blending supply apparatus. It is a schematic flowchart which shows the other example of the basic operation | movement of the mixing | blending supply capability change function performed with the same material mixing | blending supply apparatus. (A), (b) is a schematic flowchart for demonstrating the further another example of the basic operation | movement of the mixing | blending supply capability change function performed with the same material mixing | blending supply apparatus. It is a schematic time chart for demonstrating the operation example of the 2nd standby mode in the example. It is a schematic time chart for demonstrating the operation example of the 3rd standby mode in the example. (A), (b) is a schematic block diagram which shows typically an example of the system structure provided with the modification of the same material mixing | blending supply apparatus. It is a schematic block diagram which shows typically an example of the system configuration | structure provided with the other modification of the material mixing | blending supply apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1-14 is explanatory drawing for demonstrating the mixing | blending supply apparatus of the granular material which concerns on this embodiment, its operation example, a deformation | transformation operation example, and a modification.
In addition, in FIG.1, FIG.13 and FIG.14, the pipes (a gas pipe, a granular material transport pipe, etc.) which distribute | circulate gas (transport air) and a granular material are typically shown with a continuous line. Show.
Moreover, in FIG.13 and FIG.14, a part of detailed code | symbol is abbreviate | omitted.

  As shown in FIG. 1, the powder material supply device 1 of the illustrated example is supplied from a material supply unit 10 that supplies the powder material before mixing toward the downstream side, and the material supply unit 10. A single weighing machine 20 for weighing each powder material so as to have a preset mass ratio (weight ratio), and a mixing means for mixing the powder material measured by the weighing machine 20 The mixing drum 30, the temporary storage hopper 40 for temporarily storing the powder material mixed in the mixing drum 30, and the charge for storing the mixed powder material transported from the temporary storage hopper 40. A hopper 50 and a control panel 60 are provided. The lower end discharge port of the charge hopper 50 is connected to the material input port 9a of the injection molding machine 9 as a supply destination of the blended material.

Although detailed description is omitted, the injection molding machine 9 melts the compounded material charged from the material charging port 9a in the cylinder, and sends the melted resin for one shot from the nozzle at the tip of the cylinder to the mold (not used). The resin molded product is molded by injecting into the figure.
Note that the supply destination of the material blended in the blending and feeding apparatus 1 according to the present embodiment is not limited to the injection molding machine that molds the synthetic resin molded product, but an injection molding machine for other materials, an extrusion molding machine, or a compression machine. It is good also as an aspect which uses other molding machines, such as a molding machine, as a supply destination.

The material supply unit 10 includes a plurality of material feeders 11 (11A) for storing a plurality of kinds of powdered material before mixing (in the example, four types of A material, B material, C material, and D material). , 11B, 11C, 11D). For example, in the case of molding a synthetic resin molded product, these plural types of granular material materials include virgin materials, pulverized materials, master batches, various additives, and the like.
Each material feeder 11 includes a material hopper 12 (12A, 12B, 12C, 12D) for storing each material, and a feeder (quantitative feeder) 13 (13A, 13B) provided at the lower end of the material hopper 12. , 13C, 13D).
In the illustrated example, the supply feeder 13 is a screw type feeder 13A, 13B, 13C having a drive unit such as a motor, and a slide damper (slide shutter) type feeder 13D having a drive unit such as an air cylinder. ing.
Each of these supply feeders 13 is installed so that its material discharge port faces an input port at the upper end of the weighing hopper 21 of the weighing machine 20 to be described later. Is put into the weighing hopper 21 and measured by its own weight drop (natural fall).
The configuration of each supply feeder is not limited to that shown in the figure. For example, a minute amount is supplied by scraping the material on a vibration feeder having a vibration generating unit, a rotary feeder, or a turntable with a scraper. Another material cutting device such as a micro feeder may be used.

Each material hopper 12 is provided with a material sensor 15 ((15A, 15B, 15C, 15D), (see FIG. 2)), and the transport of each material is controlled by a material request signal of these material sensors 15. .
Moreover, the collector 14 (14A, 14B, 14C, 14D) which collects each material pneumatically conveyed from a material tank (not shown) is provided in the upper end part of each material hopper 12. Each collector 14 is connected to a material transport pipe 5... Having a suction nozzle 5 a at the end, and these suction nozzles 5 a are inserted into each material tank.
In the present embodiment, each material is transported to the collector 14 by suction and transport by a suction action by a suction air source 2 such as a suction blower. One end of a suction pipe 3 is connected to the suction blower 2, and a transport material switching valve 4 is connected to the other end of the suction pipe 3. The transport material switching valve 4 has a number corresponding to the number of materials. The suction pipes 3 (four in the illustrated example) are connected. Each of the four suction pipes 3 is connected to each collector 14 of each material supply machine 11 described above.

As shown in FIG. 2, the suction blower 2 and the transport material switching valve 4 constituting the material transport unit to the material supply unit 10, and each material sensor 15 and each supply feeder 13 in the material supply unit 10 are connected to a signal line. Is connected to a CPU 61 as a control unit via the control, and is controlled according to a predetermined program.
That is, the material transport operation to each material feeder 11 is performed when the material request signal is output from any one of the material sensors 15 in the material hopper 12, and the collector 14 of the material feeder 11 having the material requirement. By switching the transport material switching valve 4 so that the suction pipe 3 and the suction blower 2 connected to each other are in communication with each other and starting the suction blower 2, the powder particles stored in the material tank corresponding to the material hopper 12 The body material is transported toward the collector 14 via the material transport pipe 5. And it collects in the said collector 14, is thrown into the material hopper 12 below from the collector 14, and is stored.
That is, in each material hopper 12, each material feeder is appropriately selected according to a material request signal of each material sensor 15 so that a predetermined amount or more of each material is always stored during operation of the blending and feeding apparatus 1. Transportation and replenishment of each material to 11 is performed.
In addition, the transportation mode of each material from each material tank to each material supply machine 11 is not limited to suction transportation, and may be a mode of pressure feeding by a compressed air supply source such as a compressor.
Further, the number of the material supply machines 11 to be installed is not limited to four as shown in the figure, and a plurality of other materials may be installed.

The weigher 20 weighs the weighing hopper 21 that receives the material from each material supply machine 11 described above, the discharge damper 23 that opens and closes the lower end discharge port of the weighing hopper 21, and each material that has been put into the weighing hopper 21. And a weight sensor 22 such as a load cell.
The load cell 22 and the discharge damper 23 are connected to the CPU 61 via signal lines as shown in FIG. 2, as in the material transport means and the material supply unit 10, and together with the material feeders 11 described above, The metering process is executed under control according to a predetermined program.

  That is, as shown in FIG. 5B, the initial set value (batch amount at the time of initial setting) of one batch target amount is 6000 g, and the mixing ratio of each material is A material: B material: C material: D. If the material is set to 1: 5: 34: 60, first, the supply feeder 13A of the A material supply machine 11A for storing the A material is operated, and the A material is put into the weighing hopper 21 to load the load cell. Based on the measured value of 22, the feed feeder 13A is feedback-controlled, and when the target set value is 60 g, the feed feeder 13A is stopped and the supply of the A material is stopped. Hereinafter, similarly, each material feeder 11 is driven and controlled, and the weighing is performed by sequentially feeding the weighing hopper 21 individually until the B material reaches 300 g, the C material reaches 2040 g, and the D material reaches 3600 g. When each material is weighed to the target set value, the weighing process for one batch is completed. The weighed (mixed) material weighed in the weighing machine 20 opens the discharge damper 23 at the lower part of the weighing machine 20 until a predetermined opening time t3 (see FIG. 3) elapses. It is discharged toward the mixing drum 30 installed on the downstream side.

When controlling the supply feeders 13, the drive control is performed in consideration of the head amount when the drive is stopped, or the supply amount when each material is measured is decreased stepwise or continuously. You may make it drive-control.
Further, the opening time t3 can be appropriately set as long as the maximum amount (initial setting batch amount) of material for one batch amount can be discharged.
Furthermore, it is not restricted to the aspect which measures 4 types of materials, It is good also as an aspect which measures several types of other materials.

One batch of material discharged from the weighing machine 20 is fed into the mixing drum 30 and mixed.
The mixing drum 30 includes a storage unit 31 that stores the charged material, a stirring blade 32 that stirs and mixes the material in the storage unit 31, a stirring motor 33 that rotationally drives the stirring blade 32, and a storage unit. A discharge damper 34 that opens and closes the lower end discharge port of the portion 31 is provided.
As shown in FIG. 2, the stirring motor 33 and the discharge damper 34 of the mixing drum 30 are connected to the CPU 61 via a signal line as shown in FIG. 2, and are controlled according to a predetermined program to execute the mixing step.
That is, when the discharge damper 23 of the weighing machine 20 is closed and a predetermined delay time elapses, the agitation motor 33 is rotated and stirred until a predetermined mixing time t5 (see FIG. 3) elapses. Mixing is done. When the mixing time t5 elapses, the lower discharge damper 34 is opened until a predetermined opening time t6 (see FIG. 3) elapses, toward the temporary storage hopper 40 installed on the downstream side of the mixing drum 30. The mixed (mixed) material is discharged, and the mixing process is completed.

Note that the mixing time t5 may be changed as appropriate according to the target amount of one batch in the aspect of changing the target amount of one batch as described later, and the maximum amount (initial setting batch). It is good also as fixed time of the grade which can mix the material for 1 batch quantity of quantity.
Further, the opening time t6 can be appropriately set as long as it is possible to discharge the material for one batch amount of the maximum amount (batch amount at the initial setting), similarly to the opening time t3.
Further, after the mixing step in the mixing drum 30, that is, the discharge damper 34 is opened, the discharge operation of the mixed material is completed, and the discharge damper 34 is closed, the material is input from the weighing machine 20 to the mixing drum 30. Is configured to be performed.

One batch of the material discharged from the mixing drum 30 is put into the temporary storage hopper 40 and stored until there is a material request signal from the material sensor 52 of the downstream charge hopper 50. Retained.
The temporary storage hopper 40 includes a material storage unit 41 and a material sensor 42 that detects the presence or absence of material in the material storage unit 41, and one batch of the maximum amount (initial setting batch amount) in the blending supply device 1. At least a quantity of material can be stored. The material sensor 42 is configured to be able to detect the presence or absence of at least the minimum batch amount of material.
One end of the material transport pipe 8 is connected to the material discharge port provided at the lower end portion of the material storage portion 41 of the temporary storage hopper 40.

The other end of the material transport pipe 8 is connected to an upper collector 53 of a charge hopper 50 installed at the upper part of the injection molding machine 9.
The charge hopper 50 detects that the material storage part 51 whose lower end discharge port is communicated with the material input port 9a of the injection molding machine 9 and that the material level stored in the material storage part 51 has decreased to a predetermined level. And a material sensor 52. The material storage unit 51 is capable of storing at least materials corresponding to several batch quantities of the initial batch quantity. In addition, the material sensor 52 is provided, for example, in a storage space below the detection level of the material sensor 52 so as to be able to store about a half batch to about a batch and a half of the initial batch amount.
Note that a supply feeder similar to the above may be further provided below the charge hopper 50 to supply a predetermined amount of the blended material toward the material inlet 9a of the injection molding machine 9.

The collector 53 above the charge hopper 50 is connected to the suction blower 6 via the suction pipe 7 similar to the above.
The material sensor 52 of the charge hopper 50 and the suction blower 6 constituting the material transport means are connected to the CPU 61 via signal lines as shown in FIG. 2, and are controlled and transported according to a predetermined program, as shown in FIG. The process is executed.
That is, when a material request signal is output from the material sensor 52 of the charge hopper 50, the suction blower 6 is started and operated until a predetermined transport time t1 (see FIG. 3) elapses, and stored in the temporary storage hopper 40. The mixed material for one batch amount is transported toward the collector 53 via the material transport pipe 8, collected in the collector 53, and the material storage portion 51 below from the collector 53. To be stored.
In addition, the said transport time t1 can be suitably set, for example in the time which can convey the material for one batch amount of the maximum amount (batch amount at the time of initial setting) in the said mixing | blending supply apparatus 1.

As shown in FIGS. 1 and 2, the control panel 60 controls the above-described devices of the blending and feeding apparatus 1 according to the predetermined program, and a CPU 61 as a control unit for executing each program described later, An operation panel 62 constituting a display operation unit for setting, inputting, and displaying various settings connected to the CPU 61 via signal lines, and an operation panel 62 for setting and inputting the settings. Various setting conditions and input values, various programs such as control programs for executing basic operations and operations described later, various operating conditions and various data tables set in advance are stored, and are configured from various memories. And a storage unit 63.
The operation panel 62 is provided with a molding end scheduled switch 62a as a signal generating unit that generates a predetermined molding end scheduled signal to be described later. Further, the operation panel 62 is capable of inputting one shot amount of the injection molding machine 9 and the remaining shot number S1 after the molding completion scheduled signal (see FIG. 6B).

The CPU 61 monitors the weighing operation, the mixing operation, the transportation operation, and the like in each part of the blending supply device 1 and waits for the material (upstream standby amount M (FIG. 6) from the weighing machine 20 to the upstream side of the charge hopper 50. A standby amount detecting means for detecting (see (b)) is configured.
Further, the CPU 61 is provided with time measuring means such as a clock timer and an arithmetic processing unit, and calculates a necessary amount W and a standby amount TM as will be described later, and subtracts the standby amount TM from the necessary amount W to obtain the remaining necessary amount. The remaining required number of times of measurement N corresponding to the amount RW is calculated, and the number of times of measurement control means for controlling the number of times of measurement of the weighing machine 20 is configured (see FIG. 6B).
Further, as will be described later, the CPU 61, together with the weighing machine 20, various sensors 42 and 52, etc., processing capacity detecting means for detecting the processing capacity of the material processed per unit time in the injection molding machine 9, and the injection molding machine 9 is configured to detect a blending / supplying ability detecting unit that detects a blending / supplying ability of materials that can be supplied per unit time.
Further, as will be described later, the CPU 61 compares the processing capacity with the blending supply capacity, and when the blending supply capacity is more than the processing capacity and can be reduced to a predetermined standard, the CPU 61 The composition supply capacity control means is configured to execute the composition supply by updating so as to decrease.

Next, an example of the basic operation executed in the blending and supplying apparatus 1 according to the present embodiment having the above-described configuration will be described with reference to FIGS.
3 and FIG. 11 and FIG. 12, which will be described later, schematically show the ON / OFF operation of each device, the output signal, the opening / closing operation of each discharge damper, and the like.
Further, the schematic time chart shown in FIG. 3 corresponds to an operation example of the first standby mode in the blending supply capacity change pattern C described later.

<Initial preparation operation>
After the formulation supply device 1 is started, a predetermined initial preparation operation is performed.
At the start of the blending and supplying apparatus 1, the weighing machine 20, the temporary storage hopper 40, and the charge hopper 50 are in a state (empty state) in which materials are not yet measured or stored and held. That is, a material request signal is output from the material sensor 52 of the charge hopper 50 and the material sensor 42 of the temporary storage hopper 40.

First, the weighing machine 20 is caused to execute the above-described weighing process with the batch amount at the initial setting, and is discharged toward the mixing drum 30, and the weighing process is subsequently executed. In parallel with this, the mixing step described above is executed in the mixing drum 30 and discharged toward the temporary storage hopper 40.
As a result, the material request signal of the material sensor 42 of the temporary storage hopper 40 disappears, and when the predetermined delay time elapses after the disappearance of the material request signal, the suction blower 6 described above is activated and the internal storage hopper 40 The mixed batch of material is transported toward the charge hopper 50.
As a result, a material request signal is output from the material sensor 42 of the temporary storage hopper 40, and if the measurement process is completed, the material is discharged to the mixing drum 30 and stored in the temporary storage hopper 40 through the mixing process as described above. Then, similarly to the above, it is transported toward the charge hopper 50. Such an operation is repeated until the material request signal from the material sensor 52 of the charge hopper 50 disappears, and when the material request signal disappears, preparation for molding is completed.
When the preparation for molding is completed, disposal for discarding the material in the previous production lot of the injection molding machine 9 or test punching is appropriately performed until the molded product becomes a non-defective product.

<Normal operation: first standby mode>
After the initial preparation operation, the injection molding machine 9 sequentially performs a steady operation for molding a molded product.
In this operation example, the composition supply is executed in the first standby mode.
In the first standby mode, as shown in FIG. 3, the temporary storage hopper 40 is replenished with one batch of material and waited until the material request signal from the material sensor 52 of the charge hopper 50 is output. In addition, until the material request signal from the material sensor 42 of the temporary storage hopper 40 is output, the weighing machine 20 measures the amount of material for one batch and waits.

  That is, when a material request signal is output from the material sensor 52 of the charge hopper 50, the suction blower 6 described above is operated until the transport time t1 elapses, and one batch amount stored in the temporary storage hopper 40 is obtained. The material is transported to the charge hopper 50. If a material request signal is output from the material sensor 42 of the temporary storage hopper 40, the discharge damper 23 of the weighing machine 20 is opened until the opening time t3 elapses, and one batch amount of material held in the weighing machine 20 is released. Is put into the mixing drum 30, the above mixing step is executed, the material is put into the temporary storage hopper 40, and one batch amount of the material is kept on standby until the next material request signal is outputted. In parallel with the above, if the discharge damper 23 of the weighing machine 20 is closed, the weighing process is executed, and one batch amount of material is waited until the next material request signal is output.

As described above, in the first standby mode, the weighing machine 20 and the temporary storage hopper 40 are generally in a standby state (waiting for measurement and storage), and the weighing process in the weighing machine 20 and the mixing process in the mixing drum 30 are performed. Is performed in parallel with the execution of.
Thereafter, each time a material request signal is output from the material sensor 52 of the charge hopper 50, the material is transported, metered and mixed.
The injection molding machine 9 sequentially molds a molded product with a predetermined one shot amount and shot cycle while consuming the blended and supplied blended material, but the molding is completed when the production lot is changed or the operation is completed. Sometimes, the material already blended in the weighing machine 20, the temporary storage hopper 40, and the charge hopper 50 described above becomes a remaining material.

Therefore, in the present embodiment, after receiving a predetermined molding end scheduled signal by the above-described CPU 61 according to a predetermined number of times control program, the injection molding machine 9 has an appropriate blending supply amount according to the required material. The remaining necessary number of measurements is calculated, and the weighing operation of the weighing machine 20 is controlled.
Further, in the present embodiment, in addition to the measurement frequency control function according to the measurement frequency control program made in connection with reception of such a molding end scheduled signal, in order to reduce the blended material at the time of emergency stop, etc. The CPU 61 described above in accordance with a predetermined blending supply capacity change program detects the transition to steady operation, detects the processing capacity and blending supply capacity (metering capacity), and based on these processing capacity and metering capacity, the blending The mixing supply capacity in the supply device 1 is reduced, and the remaining material at the time of emergency stop or the like is reduced.
Hereinafter, an operation example of the blending supply capacity changing program and the measurement frequency control program executed in the present embodiment will be described.

<Detection of transition to steady operation>
In this operation example, after starting the blending supply device 1, the processing capacity of the material supplied toward the injection molding machine 9 per unit time is detected, and this processing capacity becomes a predetermined stable state. Therefore, it is determined that the operation has shifted to the steady operation.
The detection of the shift to the steady operation is detected in the same manner as the operation example of the processing capability detection function described later based on FIG. 4A to detect the processing capability and detect the shift to the steady operation. Good.
That is, as shown in FIG. 4A, when the discharge damper 23 of the weighing machine 20 is opened (step 102), the timer is started (step 103), and then the discharge damper 23 of the weighing machine 20 is opened. If so (step 104), the timer is reset, the processing time t2 (see FIG. 3) is stored in the storage unit 63, and the timer is restarted (step 105).
The processing capacity X is calculated from the processing time t2 and the one batch target amount weighed by the weighing machine 20 during the processing time t2 (initial setting batch amount at the time of initial preparation operation), and is stored in the storage unit 63 (step 63). 106). Further, after restarting the timer in step 105, as described above, whether or not the discharge damper 23 of the weighing machine 20 is opened is monitored, and each time the discharge damper 23 of the weighing machine 20 is opened, the processing capacity X Is calculated (steps 104 to 106).

The processing capacity X is calculated every time the discharge damper 23 of the weighing machine 20 is opened after the blending and feeding apparatus 1 is started up, stored in the storage unit 63, and a threshold value with which the processing capacity X varies for each calculation. When the value falls within the range, it may be determined that the state is stable and the state is shifted to the steady operation. For example, the difference between the calculated processing capability X and the average value of the processing capability X calculated for several times (for example, about five times) is several percent or less. Is determined to be in a predetermined stable state when it is within about 10%, or when the difference value of the processing capability X for each calculation is equal to or less than a predetermined threshold value, and it is determined that the operation has shifted to steady operation. It may be.
That is, in the initial preparation operation, as described above, in each part of the blending and feeding apparatus 1, no material is waiting and held, and the maximum blending supply is performed. During this time, the injection molding machine 9 does not consume a stable material (substantially constant processing speed and processing amount), and the processing capacity X (the material in each part during the initial preparation operation) The material is not actually processed (consumed) in the injection molding machine 9 until it is on standby and held, but the value calculated based on the processing time t2 detected during this time and the target amount for one batch. Is also an unstable state, with large fluctuations in the vertical direction. In this operation example, when the unstable state becomes the above-described predetermined stable state, it is determined that the operation has shifted to the steady operation.

After shifting to the steady operation, as described above, the injection molding machine 9 sequentially molds the molded product with a predetermined one shot amount and shot cycle, so that the processing capability X is substantially constant and stable. It will be in the state.
The detection of the transition from the initial preparation operation to the steady operation is not limited to the above-described mode. For example, after confirming the user that the molded product is stable and good by test driving or the like, the operation panel is The transition to the steady operation may be detected by operating the steady operation (continuous operation) switch 62 and detecting the operation signal in the CPU 61.
Alternatively, a mode in which the shift to the steady operation is detected by automatic detection based on the degree of stability of the processing capability X calculated from the switch operation by the user and the index (processing time t2 and one batch target amount) indicating the processing degree as described above. Instead, for example, when information indicating a molding state such as a shot cycle time is output from the injection molding machine 9, when the molding state becomes a predetermined stable state, You may make it discriminate | determine.
Further, in the above-described mode, the mode of obtaining the processing time t2 by monitoring the opening operation signal of the discharge damper 23 of the weighing machine 20 has been described. However, the timing at which the weighing machine 20 starts measuring or the timing related thereto is detected. The processing time t2 may be acquired based on a possible signal. For example, a material request signal from the material sensor 42 of the temporary storage hopper 40, a measurement start operation signal or a measurement completion operation signal for each measurement of the weighing machine 20, an operation signal of each device in the mixing drum 30, and the like are monitored and processed. You may make it acquire time t2.

<Processing capacity detection>
As shown in FIG. 4A, after executing a predetermined initial preparation operation (step 100), it is determined whether or not the operation has shifted to the steady operation as described above, and if the shift to the steady operation is detected ( In step 101), the processing capacity X is calculated in the same manner as described above, and the processing capacity X during steady operation is stored in the storage unit 63 (steps 102 to 106).
For example, until the blending supply capacity to be described later is changed, the one batch target amount in the weighing machine 20 is an initial setting batch amount (6000 g in FIG. 5B), and the time t2 between signals is If it was 3 minutes, the processing capacity X would be 120 kg / h.
The processing capability X during the steady operation is substantially constant and stable as described above. The processing capability X is acquired and stored by one calculation during the steady operation, and thereafter the processing capability X is detected. In this operation example, the processing capacity X is calculated each time the discharge damper 23 of the weighing machine 20 is opened, and stored in the storage unit 63, as in the case of detecting the transition to the steady operation. I have to.

  The processing time t2 acquired for calculating the processing capacity is generated in association with a signal generated when one batch of material measured by the weighing machine 20 is processed in the injection molding machine 9. The time from the first signal to the next signal may be the processing time t2. This signal is stored in the temporary storage hopper 40 for one batch amount of material, and if there is a material request signal from the downstream side, if the entire amount is transported to the charge hopper 50, Substantially the same as when detecting the transition to steady operation, for example, a material request signal from the material sensors 42 and 52 of the charge hopper 50 and the temporary storage hopper 40, a measurement start operation signal or a measurement completion operation signal for each measurement of the weighing machine 20, The operation signal of each device in the drum 30 may be used.

Further, the detection mode of the processing capability X is not limited to the above-described mode. For example, the processing capability X may be detected from the amount of one shot molded in the injection molding machine 9 and the shot cycle time. The one shot amount and the shot cycle time may be acquired by input to the operation panel 62 by the user, or may be acquired from data output from the injection molding machine 9 or the like. Alternatively, the processing capability X itself is detected by causing the user to manually input the processing capability X itself to the operation panel 62 with reference to the display of the molding data of the injection molding machine 9 and detecting the operation signal in the CPU 61. It is good also as such an aspect.
In addition, you may make it detect the processing capacity X of the material processed in the injection molding machine 9 per unit time by various aspects.

<Formulation supply capacity (metering capacity) detection>
As in the case of the processing capacity detection, as shown in FIG. 4 (b), if a predetermined initial preparation operation is executed (step 100) and a transition to a steady operation is detected (step 101), the weighing capacity Y is set. To detect.
This weighing capacity Y is calculated based on the time required for the weighing operation by monitoring the weighing operation in the weighing machine 20.
That is, when the measurement is started (step 112), the timer is started (step 113), and when the measurement is completed (step 114), the timer is reset and the measurement time t4 (see FIG. 3) is stored in the storage unit 63. Store (step 115).
From the weighing time t4 and the one batch target amount measured by the weighing machine 20, the weighing capacity Y of the weighing machine 20, that is, the weighing capacity Y of the material that can be supplied to the injection molding machine 9 per unit time. Is stored in the storage unit 63 (step 116).

For example, until the blending supply capacity to be described later is changed, the one batch target amount in the weighing machine 20 is the initial batch amount (6000 g in FIG. 5B), and the measurement time t4 is 1 minute. If so, the weighing capacity Y is 360 kg / h (see FIG. 5B).
Generally, as described above, in the compounding and supplying apparatus, the maximum compounding supply capacity in the compounding and supplying apparatus is set to be sufficiently large so that it can be applied to various molding machines or various operating modes of the molding machine. . Further, the time required for the weighing process is basically longer than the time required for adding the delay time to the time required for the mixing process and the transport process in each part other than the weighing machine 20, and in the first standby mode, the weighing is performed. The capability Y corresponds to the blending supply capability of the material that can be supplied per unit time toward the injection molding machine 9 in the blending supply device 1. In this operation example, the metering capability Y is the blending supply capability.

  The metering capacity Y may be calculated and stored from a single metering process after shifting to the steady operation in the blend supply capacity change pattern A described later, but the two points in FIG. As indicated by the chain line, in the blending supply capacity changing pattern B described later, the measuring capacity Y is calculated and stored every time the measuring process is executed.

<Combination supply capacity change pattern A>
As shown in FIG. 5A, the processing capacity X detected and stored and the weighing capacity Y are compared, the target weighing capacity corresponding to the processing capacity X is calculated, and the one batch target amount is calculated (step) 200). It is determined whether or not the target set value of each material calculated from the one batch target amount is less than or equal to the minimum measurable value (step 201). 1 batch target amount (in FIG. 5B, the initial setting batch amount of 6000 g) is changed to the minimum batch target amount calculated based on the minimum measurable value (in FIG. 5B, 500 g). Step 202). On the other hand, if the target set value exceeds the minimum measurement possible value, the one-batch target amount before the change is changed to a predetermined one-batch target amount (step 203).
The minimum measurable value is preset as a measurable value when the weighing machine 20 measures each material as described above. In the example of FIG. 5B, 5 g is the minimum measurable value. It is set as.

  For example, as described above, the predetermined one-batch target amount is calculated when the processing capacity X after the transition to the steady operation is 120 kg / h and the weighing capacity Y is 360 kg / h. For example, since the weighing capacity Y is more than the processing capacity X, the target weighing capacity is calculated so as to be 120 kg / h commensurate with the processing capacity X, and one batch target amount (FIG. 5) is calculated. In the example of (b), 2000 g) may be calculated. That is, the target weighing capacity (120 kg / h) is calculated so that the weighing capacity Y (360 kg / h) detected before the change matches the processing capacity X (120 kg / h), and the above-described weighing capacity Y of the target weighing capacity is calculated. The batch target amount (2000 g) may be calculated from the initial setting batch amount (6000 g) in accordance with the reduction ratio. The set value of each material is calculated from the one batch target amount calculated in this way and the preset mass ratio.

As described above, when the target weighing capacity is made to coincide with the processing capacity X, and one batch target amount is calculated, set, and updated, the processing capacity X is set to a value on the safe side in increments of 10 kg / h, for example. As such, the rounded down and rounded value (for example, 120 kg / h in the case of 115 kg / h) may be stored as the processing capacity X.
Further, in this way, even when the target weighing capacity is made to coincide with the processing capacity X, and the one batch target quantity is calculated, set, and updated, the above-described weighing time t4 is reduced by decreasing the one batch target quantity. Since the actual weighing ability Y (actually measured value) after updating the one batch target amount is increased, there is no problem that short feed or the like to the injection molding machine 9 side occurs.

After updating the 1 batch target amount as described above, weighing is performed with the 1 batch target amount, and the mixture supply is performed in the same operation (first standby mode) during the steady operation, and the processing capacity X is If it increases to a predetermined threshold value or more (step 204), one batch target amount is reset (step 205), and the initial preparation operation is started.
For example, when a plurality of injection molding machines 9 are connected to the blending supply apparatus 1 as a supply destination or newly connected, and the number of operating injection molding machines 9 to be supplied increases. In this case, the processing capability X is greatly increased, and a short feed may occur with the updated one-batch target amount. Therefore, in this operation example, the allowable increase range of the processing capacity X is set in advance as described above, the changed one batch target amount is reset, returned to the initial batch amount, and shifted to the initial preparation operation. I am doing so. After shifting to the initial preparation operation, as described above, it is determined whether or not the operation has shifted to the steady operation, the processing capacity X and the measuring capacity Y are detected, and the blending supply capacity is updated to be decreased. May be executed.

Note that, when the processing capability X increases to a predetermined threshold value or more, an alarm, an abnormal message, or the like may be sounded from a notification means such as a speaker.
Further, as described above, instead of an aspect in which an abnormality (a significant increase in the processing capacity X) is detected while constantly monitoring the processing capacity X, a mode in which the reset is performed by a manual operation may be employed. Or it is good also as an aspect which does not perform the process after the said step 204. FIG.
Alternatively, when the processing capacity X increases, the target weighing capacity may be calculated so that the weighing capacity Y becomes a value commensurate with the processing capacity X, and updated so as to increase the one batch target amount.

<Weighing count control pattern A>
Next, an operation example of the weighing number control program will be described with reference to FIG.
First, as a preset input item, after the composition supply device 1 is started, one shot amount and the remaining shot number S1 are input from the operation panel 62 and stored in the storage unit 63.
This one-shot amount may be, for example, a user weighing and confirming a non-defective product formed by the injection molding machine 9, or inputting it as molding data in the injection molding machine 9. If the amount of one shot is displayed or the like, it may be entered by referring to it.
The remaining shot number S1 may be confirmed by the user on the remaining molding amount and the like, and an appropriate number of times may be input, or a single or a plurality of remaining shot numbers S1 may be set in advance. It is good also as an aspect which displays on the operation panel 62 and makes a user select. Furthermore, a molding completion scheduled signal may be generated by inputting or selecting the remaining shot number S1. In this case, the remaining shot number S1 input unit on the operation panel 62 constitutes a signal generation unit.

Next, as shown in FIG. 6A, the one-shot cycle time t7 is calculated from the processing capacity X detected and stored in the same manner as described above and the one-shot amount input to the operation panel 62, It is stored in the storage unit 63. For example, as described above, if the processing capacity X is 120 kg / h and the input one-shot amount is 100 g, the one-shot cycle time is 3 seconds. The one-shot cycle time t7 may be calculated after the transition to the steady operation.
Further, the material standby amount LM (see also FIG. 1) below the detection level is calculated from the storage capacity below the detection level of the material sensor 52 of the charge hopper 50, the mass ratio of each material, and the bulk density of each material. And stored in the storage unit 63. The material standby amount LM may be calculated in a timely manner after starting the blending and feeding apparatus 1.
In the following description, the material standby amount LM is described as 4000 g for convenience.

The storage capacity may be set in advance and stored in the storage unit 63, or may be input as a preset input item from the operation panel 62. Similarly, the bulk density of each material may be input from the operation panel 62 as a preset input item.
If the input of each of the preset input items is not made after the transition to the steady operation, an alarm or an abnormal message is displayed on the operation panel 62 or is sounded from a notification means such as a speaker to prompt the input. It may be.
Further, as described above, when the shot cycle time is output from the injection molding machine 9, the CPU 61 receives the output signal and stores the shot cycle time t7 in the storage unit 63, or the injection. When displayed as molding data on the molding machine 9, the data may be confirmed by the user and input to the operation panel 62. In these cases, it is not necessary to calculate the shot cycle time t7.
Alternatively, when the number of shots per unit time is output from the injection molding machine 9, one shot amount and one shot cycle time t7 may be calculated from the number of shots and the processing capacity X. .

As described above, if various pre-set input items are set and input, and the one-shot cycle time t7 and the material standby amount LM are stored, as shown in FIG. 6B, the operation of the molding end scheduled switch 62a is operated. Is monitored (step 300).
When the molding end scheduled switch 62a is operated (step 300), a timer is started (step 301). When the material request signal is output from the material sensor 52 of the charge hopper 50 (step 302), the timer is reset, and the molding end schedule signal generated and output by the operation of the molding end schedule switch 62a The time t8 until the material request signal is stored in the storage unit 63 (step 303).
As described above, in the case where the molding completion scheduled signal is generated by inputting the remaining shot number S1, in step 300, instead of the mode of monitoring whether or not the molding termination scheduled switch 62a is operated. The timer may be started in step 301 by monitoring whether the remaining shot number S1 is input. In this case, the molding end scheduled switch 62a may not be provided.

Next, from the one shot cycle time t7 and the time t8, the number of shots S2 injected by the material UM (see also FIG. 1) above the detection level of the material sensor 52 of the charge hopper 50 is calculated, and the storage unit 63 (Step 304). For example, as described above, if the one-shot cycle time t7 is 3 seconds and the time t8 is 30 seconds, the number S2 of shots injected with the material UM above the detection level is 10 shots.
The material UM above the detection level is unknown because the material sensor 52 detects the lower limit of the material level, and when the molding end scheduled signal is output. In this operation example, from the one-shot cycle time t7 and the time t8, the number of shots S2 injected with the material UM above the detection level, that is, from the molding end scheduled signal to the material request signal of the material sensor 52. The amount processed in the injection molding machine 9 in the meantime is calculated.
In place of such a mode, a sensor or the like that can detect the amount of the material UM above the detection level at the time when the molding end schedule signal is output is provided, and this amount is added to the waiting amount TM described later, or Alternatively, it may be subtracted from the necessary amount described later.

After calculating the number of shots S2, the required number of remaining shots S is calculated by subtracting the number of shots S2 from the input number of remaining shots S1. Further, the required amount W is calculated from the required remaining shot number S and the one shot amount, and stored in the storage unit 63 (step 305).
For example, if the input number of remaining shots S1 is 200 shots, the number of shots S2 (10 shots) is reduced, and the required number of remaining shots S is 190 shots. Will be 19 kg.

Thus, after the necessary amount W is calculated and stored, or in parallel with the above steps, the standby amount of the material waiting from the weighing machine 20 to the upstream side of the charge hopper 50 (upstream standby amount) ) M is calculated, and the standby amount TM is calculated from the upstream standby amount M and the material standby amount LM, and stored in the storage unit 63 (step 306).
The upstream standby amount M is calculated by monitoring the weighing operation, mixing operation, transporting operation and the like in each part of the blending and feeding apparatus 1 by the CPU 61, and determining whether or not the material is waiting in each part (standby state). For example, it is determined whether or not the weighing machine 20 is in a weighing operation. If the weighing machine 20 is in a weighing operation, the weighing standby amount at the completion of the weighing may be included in the upstream standby amount M.
As described above, taking the upstream standby amount M after decreasing the one batch target amount as an example, in the first standby mode, the standby amount (one batch target amount) in the weighing machine 20 is 2000 g, The standby amount (1 batch target amount) of the mixing drum 30, the temporary storage hopper 40 or the material being transported is 2000 g, and the upstream standby amount M is 4000 g.

If the above-described material standby amount LM (4000 g) is added to the upstream standby amount M (4000 g), the standby amount TM (8000 g) is calculated (step 306).
Next, the remaining amount RW (11 kg) is calculated by subtracting the standby amount TM (8000 g) from the above-described necessary amount W (19 kg), and stored in the storage unit 63 (step 307).
The remaining required amount RW is divided by the one-batch target amount of the weighing machine 20, and the remaining required weighing number N is calculated and stored in the storage unit 63 (step 308). For example, if the above-described one batch target amount is 2000 g, the remaining required number of times N is 5.5. For example, the remaining required number of times N calculated may be rounded to the safe side so that a short feed or the like does not occur, and may be set to 6 times.
Next, the weighing machine 20 is caused to perform weighing of the remaining necessary weighing number N calculated as described above with the set one batch target amount (2000 g in the above example), and the weighing operation of the weighing machine 20 thereafter is performed. Stop (step 309). That is, after the remaining required weighing N times, the weighing is not performed even when the material request signal from the downstream side of the weighing machine 20 is output. In addition, it is good also as an aspect which does not output a material request | requirement signal from each material sensor 42 and 52 after the remaining necessary measurement frequency | count N times or after that appropriate time.

  As described above, in this operation example, the remaining required amount RW is calculated by subtracting the standby amount TM from the required amount W, the remaining required weighing number N is calculated accordingly, and the weighing corresponding to the number N is calculated. Since the weighing machine 20 is executed and the subsequent weighing operation is stopped, after the molding completion schedule signal is output, the molded product is molded as planned at the end of molding, and the remaining material Can be efficiently reduced. As a result, waste of materials can be reduced and the amount of waste can be reduced. For example, to explain with reference to the above example, the material weighed in the weighing machine 20 is 12 kg and the remaining material is approximately 1000 g with respect to the remaining required amount RW (11 kg). Thus, the remaining material can be greatly reduced.

In particular, in this operation example, the blending supply capacity change program is executed to perform blending supply with the blending supply capacity corresponding to the processing capacity X of the injection molding machine 9, so that the injection molding machine 9 The remaining material can be reduced also when the emergency stop is performed, when the operation of the molding end scheduled switch 62a is forgotten, or when there is an input error in various preset input items. That is, even when there is an emergency stop or the like, one batch amount of material that is waiting for measurement and stored in the weighing machine 20 and the temporary storage hopper 40, respectively, and the material that is transported to the charge hopper 50 and gradually consumed 1 Batch material can be reduced.
Further, as described above, by reducing the batch target amount in accordance with the processing capacity X of the injection molding machine 9, it is equivalent to the fraction after calculating the remaining required number of times N as described above. The amount of one batch to be reduced is reduced, and the remaining material can be reduced more efficiently.

Note that it is determined from the one shot amount and the remaining shot number S1 whether or not the remaining shot number S1 is appropriate. When the remaining shot number S1 is not appropriate, an alarm or an abnormal message is displayed on the operation panel 62, a speaker or the like. It is possible to correct the input of the number of remaining shots S1. For example, as described above, the remaining shot W is calculated so that the necessary amount W calculated based on the remaining shot number S1 does not fall below the standby amount TM calculated based on the standby state of the blending supply device 1 and the like. It is preferable to set the number S1. For example, the temporary required amount is calculated from one shot amount and the input (or selected) remaining shot number S1, and the temporary required amount is calculated based on the standby state in the blending and supplying apparatus 1 and the like. If the amount is less than the waiting amount TM, the input correction of the remaining shot number S1 may be prompted.
Alternatively, instead of the control mode assuming that the required amount W does not fall below the standby amount TM, for example, as described above, after calculating the required amount W and the standby amount TM, the standby amount When TM exceeds the required amount W, the subsequent weighing operation of the weighing machine 20 may be stopped. Even in such a case, as described above, in the present operation example, the one batch target amount is decreased in accordance with the processing capability X of the injection molding machine 9, so that the remaining material can be decreased.

In this operation example, as an example of a signal generation unit that generates a molding end scheduled signal, an example in which a molding end scheduled switch 62a is provided and operated by the user is shown. Detection means for detecting the remaining molding amount (for example, detection of the number of remaining trays, a sensor for detecting the amount of discharged molding product, etc.) is provided on the discharge side of the molded product, and an output signal from this remaining molding amount detection means May be received by the CPU 61 as a molding completion schedule signal, and the measurement count control may be executed in the same manner as described above.
Furthermore, in this operation example, an example in which the blending supply capacity change program is executed in addition to the above-described measurement number control program is shown, but only the above measurement number control program may be executed.

Next, another operation example of the measurement number control program executed by the material combination supply device 1 according to the present embodiment will be described with reference to FIG.
In addition, an operation mode and the like different from the above-described measurement number control pattern A will be mainly described, and description of the same operation mode and the like will be omitted.

<Weighing count control pattern B>
First, as a preset input item, after the composition supply apparatus 1 is activated, one shot cycle time and the remaining shot number S1 are input from the operation panel 62 and stored in the storage unit 63.
When the one-shot cycle time is displayed as molding data on the injection molding machine 9 as described above, the user may confirm the data and input it to the operation panel 62. Alternatively, as described above, when the shot cycle time is output from the injection molding machine 9, the CPU 61 may receive the output signal and store the shot cycle time in the storage unit 63. In this case, it is not necessary to input the one-shot cycle time.

Based on the one-shot cycle time, the processing capability X, and the remaining shot number S1, the required amount W is calculated and stored in the storage unit 63. For example, as in the above example, assuming that the one-shot cycle time is 3 seconds, the processing capacity X is 120 kg / h, and the remaining shot number S1 is 200 shots, one shot amount (100 g ) Is calculated and multiplied by the number of remaining shots S1, the required amount W is 20 kg.
Further, the material standby amount LM is calculated and stored in the storage unit 63 in the same manner as the measurement number control pattern A described above.

As described above, if various pre-set input items are set and input, and the required amount W and the material standby amount LM are stored, as shown in FIG. Is monitored (step 300). Alternatively, as described above, when the molding completion scheduled signal is generated by inputting the remaining shot number S1, in step 300, instead of the mode in which the presence / absence of the molding termination scheduled switch 62a is monitored. The presence / absence of the remaining shot number S1 may be monitored.
Next, when the molding end scheduled switch 62a is operated (step 300), steps 316 to 319 are executed in the same manner as steps 306 to 309 in the measurement number control pattern A.

That is, the standby amount (upstream standby amount) M of the material waiting from the weighing machine 20 to the upstream side of the charge hopper 50 is calculated, and the standby amount is calculated from the upstream standby amount M and the material standby amount LM. TM is calculated and stored in the storage unit 63 (step 316).
Next, the remaining amount RW (12 kg) is calculated by subtracting the standby amount TM (8000 g) from the above-described necessary amount W (20 kg), and stored in the storage unit 63 (step 317).
The remaining required amount RW is divided by the one batch target amount of the weighing machine 20 to calculate the remaining required weighing number N and store it in the storage unit 63 (step 318). For example, if the above-described one batch target amount is 2000 g, the remaining required number of times N is 6 times.
Next, the weighing machine 20 is caused to perform weighing of the remaining necessary weighing number N calculated as described above with the set one batch target amount (2000 g in the above example), and the weighing operation of the weighing machine 20 thereafter is performed. Stop (step 319).

As described above, also in this operation example, after the molding completion schedule signal is output, at the end of molding, a molded product is molded as planned, and the remaining material can be efficiently reduced. As a result, waste of materials can be reduced and the amount of waste can be reduced. For example, to explain with reference to the above-described example, the material weighed in the weighing machine 20 is 12 kg with respect to the remaining required amount RW (12 kg), and the remaining material is the time when the molding completion schedule signal is output. The amount obtained by adding the fraction after calculating the remaining required number of times N to the unknown material above the detection level of the material sensor 52 of the charge hopper 50, that is, less than 2 batches at the maximum. The remaining material can also be reduced according to the example.
In this operation example, the mode for calculating the required amount W is not limited to the above-described example. For example, as described in the measurement count control pattern A, one shot amount is input or calculated. The required amount W may be calculated by multiplying the one shot amount by the remaining shot number S1.
Further, in this operation example, since the unknown material above the detection level of the material sensor 52 of the charge hopper 50 at the time when the molding end scheduled signal is output becomes the remaining material, the remaining required number of times N is rounded. You may make it round down or round off.

Next, still another operation example of the measurement number control program executed by the material blending and supplying apparatus 1 according to the present embodiment will be described with reference to FIG.
In this operation example, the following steps 328 to 332 are executed instead of step 308 or step 318 and subsequent steps in the above-described measurement number control pattern A and pattern B. Since it is the same as the above-described measurement number control pattern A and pattern B, description thereof is omitted.

<Weighing count control pattern C>
In this operation example, after calculating the remaining required amount RW as described above, the remaining required amount RW is divided by the one-batch target amount of the weighing machine 20 to calculate the remaining required number of times N and the remaining number of times R. And stored in the storage unit 63 (step 328). That is, as in each of the operation examples described above, the remainder number R (0.5 in the example of the measurement number control pattern A described above) is calculated and stored without rounding.
Next, a surplus batch target amount corresponding to the remainder R is calculated and stored in the storage unit 63 (step 329). For example, if the above-described one batch target amount is 2000 g, the remaining batch target amount is 1000 g.
At this time, the remaining batch target amount may be multiplied by a safety factor (safety factor, for example, about 1.1 to 1.3).

Next, it is determined whether the target set value of each material calculated based on the remaining batch target amount is equal to or less than the minimum measurable value, as in step 201 described with reference to FIG. 5A (step 330). If the target set value is less than or equal to the minimum measurable value, the remaining batch target amount is changed to the minimum batch target amount and stored in the storage unit 63 (step 331).
On the other hand, if the target set value exceeds the minimum quantifiable value, a predetermined remaining batch target amount is stored in the storage unit 63.
Next, the weighing machine 20 performs weighing of the remaining necessary weighing number N calculated as described above with the set one batch target amount (2000 g in the above example), and the remaining batch target amount (in the above example). 1000g), the weighing machine 20 is caused to perform one weighing, and the weighing operation of the weighing machine 20 thereafter is stopped (step 332).

As described above, according to this operation example, as in the above-described measurement number control pattern A and pattern B, when the remaining required measurement number is calculated, the fraction processing is not performed, and the remaining batch target amount is calculated from the remaining number R. Therefore, the remaining material at the end of molding can be reduced more efficiently.
In particular, if the operation mode is combined with the above-described measurement number control pattern A, the remaining material at the end of molding can be further reduced efficiently.

In the operation examples (patterns A, B, and C) of the above-described measurement count control programs, the material standby amount LM below the detection level of the material sensor 52 of the charge hopper 50 is calculated, and this material standby amount LM is calculated as Although an example in which the standby amount TM is calculated in addition to the upstream standby amount M waiting from the weighing machine 20 to the upstream side of the charge hopper 50 is shown, the upstream standby amount is added without adding the material standby amount LM. Only M or the upstream standby amount M plus the material UM above the detection level may be grasped as the standby amount TM. In such an aspect, as in the case of the pattern A and the pattern B, when the remaining required number of times N is rounded, it may be rounded down.
Further, in the operation examples (patterns A, B, and C) of the above-described measurement count control programs, the molding machine as the supply destination of the blending supply apparatus 1 has been described as the injection molding machine 9, but for example, extrusion molding It can also be applied to machines. In this case, instead of the number of remaining shots, a remaining extrusion amount or the like may be input or selected.

Next, another operation example of the blending / supplying capacity changing program executed by the material blending / supplying apparatus 1 according to the present embodiment will be described with reference to FIG.
In addition, since the mode of steady operation transfer detection, processing capacity detection, and metering capacity detection is the same as the operation example of the above-described blending supply capacity change pattern A, description thereof is omitted.
Moreover, this operation example can be executed in the blending supply apparatus 1 together with the above-described operation examples (patterns A, B, and C) of each measurement number control program, instead of the blending supply capability change pattern A described above.
In the operation example of the blending supply capacity change pattern A described above, the batch target amount to be weighed in the weighing machine 20 is changed only once based on the processing capacity X and the weighing capacity Y after shifting to the steady operation. In this operation example, control is performed in such a manner that the one batch target amount is decreased step by step, and the measurement capability Y is brought close to the processing capability X to a predetermined reference.

<Formulation supply capacity change pattern B>
That is, as shown in FIG. 9, first, similarly to the above, the processing capacity X detected and stored is compared with the weighing capacity Y, the target weighing capacity corresponding to the processing capacity X is calculated, and one batch target amount is calculated. Is calculated (step 210). At this time, in this operation example, the target weighing capacity is calculated by multiplying the processing capacity X by a predetermined safety factor (safety factor, which may be about 1.1).
For example, in the same manner as described above, when the processing capacity X after the transition to the steady operation is 120 kg / h and the weighing capacity Y is 360 kg / h, for example, the weighing capacity Y is matched with the processing capacity X. Thus, 120 kg / h is multiplied by a safety factor of 1.1 to obtain 132 kg / h, and the target amount for one batch (2200 g) is calculated from the rate of decrease of the target weighing capacity with respect to the weighing capacity Y. .

From the one batch target amount calculated as described above, the target set value of each material is calculated in the same manner as described above, and it is determined whether it is less than the minimum measurable value (step 211). If the value is less than the value, the batch target amount before the change is changed to the minimum batch target amount calculated based on the minimum quantifiable value (step 212). On the other hand, if the target set value exceeds the minimum measurement possible value, the one batch target amount before the change is changed to a predetermined one batch target amount (step 213).
After updating the batch target amount in step 212 or 213, if the processing capacity X increases to a predetermined threshold value or more (step 214 or step 216), the batch target amount is reset (step 215). Shift to initial preparation operation.
On the other hand, when the target set value exceeds the minimum measurable value and the detected weighing capacity Y is not approaching the target weighing capacity to the predetermined reference again (step 217), the process returns to step 210. Again, in the same manner as described above, the target amount for one batch is calculated (step 210).

In other words, if the batch target amount is reduced and updated, the actual weighing capacity Y increases as the weighing time t4 is shortened as described above, and is detected during the next weighing operation after updating the batch target amount. The weighing capacity Y becomes larger than the set target weighing capacity.
Therefore, in this operation example, the one batch target amount is calculated as a provisional value based on the measurement time t4 (1 minute) when calculating the measurement capacity Y before update and the target measurement capacity (132 kg / h). Based on the weighing capacity Y detected during the next weighing operation after the update of the 1 batch target quantity, the 1 batch target quantity is calculated and updated again. Thereafter, the weighing capacity Y reaches the predetermined standard for the target weighing capacity. The batch target amount is updated until it approaches.

For example, as described above, when the batch target amount is updated from 6000 g to 2200 g, if the weighing time t4 during the next weighing operation is actually 45 seconds instead of 1 minute, The actual measurement value of the weighing capacity Y after the update is 176 kg / h. If the one batch target amount is calculated again based on the measurement time t4 (45 seconds) of the actual measurement value and the target weighing capacity (132 kg / h), 1650 g is obtained and the one batch target amount is updated. Thereafter, similarly, based on the measurement time t4 when calculating the measurement capacity Y before the update and the target measurement capacity, one batch target amount is calculated and updated as a provisional value, and the next measurement capacity Y after the update is detected. Based on the weighing time t4 and the target weighing capacity at the time, the procedure for calculating and updating one batch target quantity is repeated, and the one batch target quantity is decreased until the weighing ability Y approaches the target weighing capacity to the predetermined standard. The update process is repeated (steps 217 and 210). That is, in this operation example, the target amount for one batch is updated every time the weighing operation is performed twice.
To determine whether or not the target weighing capacity has approached a predetermined standard, for example, a threshold value of about ± several percent (for example, ± 5%) is set for the target weighing capacity, and the updated weighing capacity Y is If it is within the range of the threshold value, it may be determined that the target weighing capacity has approached a predetermined standard.

  As described above, in this operation example, the process of decreasing and updating one batch target amount is repeatedly performed until the weighing capacity Y approaches the target weighing capacity calculated based on the processing capacity X to a predetermined reference. Therefore, the compounded material (remaining material) at the time of emergency stop etc. can be reduced more efficiently. That is, the weighing capacity Y can be reduced to the minimum capacity with a capacity that matches the processing capacity X of the injection molding machine 9, and the remaining material can be greatly reduced.

Note that, as described above, instead of a mode in which the update of one batch target amount is repeated until the weighing capacity Y approaches the target weighing capacity to a predetermined reference, for example, the number of updates N for one batch target amount is set in advance. The mode may be updated only N times.
In the above operation example, at the time of the first update, the target weighing capacity is calculated by multiplying the processing capacity X by the safety factor, and one batch target amount is calculated based on the target weighing capacity. Update is performed in the same manner as the blending supply capacity change pattern A described above, and one batch target amount is calculated, and the second or multiple updates are performed in the manner of calculating the one batch target amount in this operation example. Good.

  Moreover, in the operation example (Pattern A and Pattern B) of each of the above-described combination supply capacity change programs, the automatically detected weighing capacity Y and the processing capacity X are compared, and the automatically detected weighing capacity Y is set as the processing capacity X. The target weighing ability is calculated in a predetermined manner so as to obtain a suitable predetermined ability, and one batch target amount is calculated and updated from the calculated target weighing ability. However, the present invention is not limited to such an aspect. For example, a table that associates the processing capacity of the molding machine with the one batch target amount of the weighing machine may be stored in advance, and the one batch target amount may be changed based on this table. In this case, a plurality of types of tables may be prepared in accordance with the type of material to be blended and the number of material to be weighed. Further, when creating a table in this way, the safety rate may be set large so as to associate the one batch target amount with the processing capacity so that short feed or the like does not occur.

Next, still another operation example of the blending / supplying capacity changing program executed by the material blending / supplying apparatus 1 according to the present embodiment will be described with reference to FIGS.
In addition, since the mode of steady operation transition detection and processing capacity detection is the same as that of each example mentioned above, description is abbreviate | omitted.
Moreover, this operation example is replaced with or in addition to the above-described combination supply capacity change pattern A or pattern B, and together with the above-described operation examples (patterns A, B, and C) of each measurement number control program. 1 can be executed.

In the operation example of the above-described blending supply capability change pattern A and pattern B, the blending supply device 1 is reduced by decreasing the one batch target amount based on the processing capability X and the metering capability Y after shifting to the steady operation. In this operation example, it is possible to execute a plurality of standby modes based on the combination of the standby mode of the material in the weighing machine 20 and the temporary storage hopper 40, and change the standby mode. Thus, the blending / supplying ability of the blending / supplying apparatus 1 is reduced.
In this operation example, it is possible to execute the first standby mode, the second standby mode shown in FIG. 11, and the third standby mode shown in FIG. 12. First, the second standby mode and the third standby mode are executed. An operation example in the standby mode will be described with reference to FIGS.
Since the first standby mode is the same as described above, the description thereof is omitted.

<Second standby mode>
In this second standby mode, as shown in FIG. 11, the temporary storage hopper 40 is replenished with one batch of material and waits until a material request signal is output from the material sensor 52 of the charge hopper 50 ( Until the material request signal from the material sensor 42 of the temporary storage hopper 40 is output, the material request signal from the material sensor 42 is output without waiting for the weighing machine 20 to measure the material. After that, the metering is started.

That is, when a material request signal is output from the material sensor 52 of the charge hopper 50, the suction blower 6 described above is operated until the transport time t1 elapses, and one batch amount stored in the temporary storage hopper 40 is obtained. The material is transported to the charge hopper 50. If a material request signal is output from the material sensor 42 of the temporary storage hopper 40, the weighing machine 20 executes the weighing process. When the weighing process is completed, the mixing drum performs the mixing process, and the temporary storage hopper 40 performs mixing. The spent material is put in, and the temporary storage hopper 40 waits for one batch of material.
Thus, in the second standby mode, the weighing process and the mixing process are not executed in parallel, but are sequentially executed in series, and after the mixing process is completed, the material sensor 42 of the temporary storage hopper 40 is used. The measurement is not started until the material request signal from is output.
In the same manner, every time a material request signal is output from the material sensor 52 of the charge hopper 50, the transportation, weighing and mixing of materials are executed in series.

<Third standby mode>
In this third standby mode, as shown in FIG. 12, until the material request signal is output from the material sensor 52 of the charge hopper 50, the weighing machine 20 and the temporary storage hopper 40 are made to wait for and hold the material. Instead, the metering is started after the material request signal from the material sensor 52 is output.
That is, when a material request signal is output from the material sensor 52 of the charge hopper 50, the weighing process is performed in the weighing machine 20, and when the weighing process is completed, the mixing process is performed in the mixing drum. Is put into the temporary storage hopper 40. Thereby, the material sensor 42 of the temporary storage hopper 40 detects the presence of the material, and the suction blower 6 described above is operated until the transport time t1 elapses, so that the material for one batch amount stored in the temporary storage hopper 40 is obtained. And transport to the charge hopper 50.
Thus, in the third standby mode, as in the second standby mode, the weighing process and the mixing process are not performed in parallel, but are sequentially performed in series, and the weighing machine 20 and the temporary storage hopper 40 are further performed. In general, the material is kept in an empty state without waiting (weighing and storing and holding).
In the same manner, every time a material request signal is output from the material sensor 52 of the charge hopper 50, the metering, mixing and transportation of materials are executed in series.

<Combination supply capacity change pattern C>
As is apparent from the standby mode, the blending supply capacity in each mode described above is the maximum in the first standby mode and the minimum in the third standby mode. This is performed based on the processing capability X and a reference time condition calculated based on the standby mode of each mode.
First, as shown in FIG. 10 (b), if a predetermined initial preparation operation is executed (step 100) and then a transition to a steady operation is detected (step 101), the detection level of the material sensor 52 of the charge hopper 50 is detected. From the following material standby amount LM and the processing capability X, a material supplyable time t9 below the detection level is calculated and stored in the storage unit 63 (step 122). That is, it is calculated how much molding time (processing time) can be covered by the material standby amount LM below the detection level.

Further, the supply possible time t10 of the material stored and held in the temporary storage hopper 40 is calculated from the one batch target amount and the processing capacity X, and stored in the storage unit 63 (step 123). That is, it is calculated how much molding time (processing time) can be covered by the material stored and held in the temporary storage hopper 40.
Also, the blending and supply possible time t11 when the measurement process, the mixing process, and the transport process are executed in series is calculated from the measurement time t4, the mixing time t5, the transport time in each part, and the delay time in each part. And stored in the storage unit 63 (step 124). That is, after the material request signal is output from the material sensor 52 of the charge hopper 50, the time until the weighed batch of material is put into the charge hopper 50 is calculated.
The steps 122, 123, and 124 need not be executed in the order shown in FIG. 10A, and may be executed in parallel.

When the reference times t9, t10, and t11 are calculated and stored as described above, the combination supply capacity change pattern C for changing each standby mode is executed by comparing them.
That is, as shown in FIG. 10B, the supplyable time t9 is compared with the blending supplyable time t11, and the blending supplyable time t11 is not equal to or longer than the feedable time t9, that is, the blending supply is possible. If the time t11 is smaller than the supplyable time t9 (step 220), the first standby mode, which is the initial setting mode, is changed to the third standby mode (step 221). That is, it is determined that the blending supply capacity in the third standby mode is greater than the processing capacity X, the first standby mode is changed to the third standby mode, and the subsequent blending supply is executed in the third standby mode.

On the other hand, if the blending supply available time t11 is not less than the supply possible time t9 (step 220) and not less than the supply available time t9 plus the supply possible time t10 (step 222), the second standby mode and the second It is determined that the processing capability X is larger than the blending supply capability in the three standby mode, and the first standby mode, which is the mode at the time of initial setting, is continued (step 223).
Further, if the blending supply possible time t11 is not less than the supply possible time t9 (step 220) and is shorter than the time obtained by adding the supply possible time t10 to the supply possible time t9 (step 222), the blending in the second standby mode is performed. It is determined that the supply capacity is greater than the processing capacity X, the first standby mode is changed to the second standby mode (step 224), and the subsequent blend supply is executed in the second standby mode.
In step 221 or 224, after changing the standby mode as described above, if the processing capability X increases to a predetermined threshold value or more (step 225), the standby mode is changed to the first standby mode (step 225). 226), shifting to the initial preparation operation.

  As described above, in this operation example, when the standby mode can be changed based on the detected processing capacity X and the reference time condition calculated based on the standby mode of each standby mode, the standby mode is changed. Thus, since the blending and feeding ability of the blending and feeding apparatus 1 is reduced, the blended material (remaining material) at the time of emergency stop can be reduced as described above. That is, in the second standby mode, the material request signal from the material sensor 42 does not wait for the weighing machine 20 to measure the material until the material request signal from the material sensor 42 of the temporary storage hopper 40 is output. Since the weighing is started after the output, the weighing machine 20 does not always wait for the weighing, and the remaining material can be reduced accordingly. Further, in the third standby mode, the weighing machine 20 and the temporary storage hopper 40 are in an empty state without substantially waiting for the material (weighing standby and storage hold), so that the remaining material is further reduced as compared with the second standby mode. be able to.

In this operation example, the operation example (patterns A, B, and C) of each measurement number control program described above is executed when the blending supply is executed after changing to the second standby mode or the third standby mode. In the same way as described above, this operation example can be applied by determining whether or not the material is waiting (standby state) in each part of the blending and feeding apparatus 1 and calculating the upstream standby amount M. It is.
Further, in addition to this operation example of changing the standby mode to reduce the blending supply capacity, as in the above blending supply capacity changing pattern A and pattern B, the mode of reducing the blending feeding capacity by changing the target amount for one batch When executing the above, the blending supply capability at the time of series operation may be calculated from the blending supply possible time t11 and the one batch target amount, and this blending supply capability may be applied instead of the above-described metering capability. For example, after determining whether or not the standby mode can be changed and changing the standby mode, if the standby mode after the change is the first standby mode, similarly to the above, one batch target is set based on the weighing capacity. On the other hand, if the standby mode after the change is the second standby mode or the third standby mode, the target amount for one batch is reduced based on the blending supply capability during the series operation. It is good.
Thus, the remaining material can be reduced more efficiently by combining the aspect of reducing the blending supply capacity by changing the standby mode and the aspect of reducing the blending capacity by changing the one-batch target amount.

Moreover, in this operation example, a reference time condition for comparison is calculated so that the blending supply capacity in each standby mode does not become less than the processing capacity X, and each standby mode is changed based on the reference time condition. The blending supply capacity in each standby mode may be roughly calculated within a safe range and stored in advance, and change control of each standby mode may be performed in comparison with the processing capacity after transition to steady operation.
Furthermore, in this operation example, the three standby modes of the first standby mode, the second standby mode, and the third standby mode can be executed, and each standby mode is changed. Only the mode and the second standby mode can be executed and the first standby mode can be changed to the second standby mode to reduce the blending supply capacity.
Furthermore, in the present embodiment, the mixing drum 30 is made not to wait for materials except during mixing. However, the above-described standby modes are made possible by executing modes in which the mixing drum is made to wait for materials or not to wait. In addition, it is good also as an aspect which can be changed from each of these standby modes.

In the basic operation example in the present embodiment, the entire amount of the material for one batch amount stored and held in the temporary storage hopper 40 is transported to the charge hopper 50 by a single material request signal. It is good also as an aspect made to convey toward the charge hopper 50 intermittently divided into several times.
Further, a mode in which a drying device or a heating device is installed in the front stage of the charge hopper 50, and the blended material is dried or heated in the drying device or the heating device before supplying the blended material to the charge hopper 50. It is good. In this case, the above-described measurement count control patterns A, B, and C may be executed in consideration of the standby amounts at these parts.

Next, a modified example of the blending supply apparatus according to the present embodiment will be described with reference to FIGS.
In addition, about the structure similar to the above-mentioned mixing | blending supply apparatus 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted or demonstrated easily.

FIG. 13A shows a blending supply apparatus 1A according to the first modification. In this blending supply apparatus 1A, a mixing drum is not installed between the weighing machine 20 and the temporary storage hopper 40, and these weighings are measured. The machine 20 and the temporary storage hopper 40 are vertically adjacent to each other. Also, a mixing drum 30A as a mixing means is installed on the top of the charge hopper 50A, and the mixing drum 30A is also used as a collector for the charge hopper 50A.
In the composition supply apparatus 1A having such a configuration, it is possible to execute substantially the same operation as in the above basic operation example, and each of the measurement number control patterns A, B, and C, and the composition supply capacity change pattern. Execution of A and blending supply capacity change pattern B is possible.
In addition, when executing the blending supply capacity change pattern C, a time obtained by adding the transport time from the temporary storage hopper 40 to the mixing drum 30A, the mixing time in the mixing drum 30A, and the delay time in each part to the supplyable time t10. May be set as the supplyable time t10.

FIG.13 (b) shows the mixing | blending supply apparatus 1B which concerns on a 2nd modification, In this mixing | blending supply apparatus 1B, only the structure of a mixing means differs from the mixing | blending supply apparatus 1A which concerns on the said 1st modification, Other configurations are the same.
That is, in the blending supply apparatus 1B according to the present modification, the airflow mixing / collecting device 30B is installed above the charge hopper 50B instead of the mixing drum as described above.
Although detailed explanation is omitted, the air flow mixing and collecting device 30B is provided with an upper fluid hopper, a feeding tube for temporarily storing the material mixed by flowing in the fluid hopper, and the feeding tube and the injection molding machine 9. And an on-off valve provided between the material input port 9a. In the airflow mixing and collecting device 30B, the material transported by suction is mixed while removing fine powder in the fluid hopper, and then mixed into the charging hopper 50 by feeding it into the charging pipe and opening and closing the on-off valve. I am trying to throw in the materials. According to such a configuration, the transportation process and the mixing process can be performed as a related process, and the time of these processes can be shortened compared to the above examples.

FIG. 14 shows a compounding / supplying device 1C according to a third modification. In this compounding / supplying device 1C, as a mode (direct mounting type) installed directly on the upper part of the injection molding machine 9 without providing a temporary storage hopper. This is very different from the above examples. That is, the charge hopper 50 </ b> C is installed below the mixing drum 30. According to such a configuration, the above-described transport means for transporting the material to the molding machine side and the above transport process are unnecessary, and the apparatus configuration is compact compared to the above examples, and the entire blending and supplying process Can be shortened.
Even in the blending and supplying apparatus 1C configured as described above, it is possible to execute substantially the same operation as in the basic operation example, and it is possible to execute the blending and feeding capacity changing pattern A and the blending and feeding capacity changing pattern B. It is.
In addition, when the blending supply capacity change pattern C is executed, the third standby mode cannot be executed, but the first standby mode can be changed to the second standby mode to reduce the blending supply capacity. .
Furthermore, when each of the above-described metering frequency control patterns A, B, and C is executed, the above-described measurement is performed except that it is not necessary to add the storage amount of the temporary storage hopper when calculating the upstream standby amount M as described above. It can be executed in substantially the same manner.

1,1A, 1B, 1C Material blending and feeding device 9 Injection molding machine (molding machine)
9a Material input port 11A, 11B, 11C, 11D Material supply machine 20 Weighing machine (mixing supply capacity detecting means)
23 Discharge damper (processing capacity detection means)
30, 30A mixing drum (mixing means)
30B Airflow mixing collector (mixing means)
42 Material sensor (Processing capacity detection means)
50, 50A, 50B, 50C Charge hopper (storage part)
52 Material sensor (Processing capacity detection means)
61 CPU (standby amount detection means, measurement frequency control means, blending supply capacity control means, processing capacity detection means, blending supply capacity detection means)
62 Operation panel (operation unit)
62a Molding end scheduled switch (signal generator)
M Stand-by amount of material from the weigher to the upstream side of the charge hopper Material above the detection level of the UM material sensor (amount processed in the molding machine between the molding completion signal and the material sensor material request signal)
Material standby amount below detection level of LM material sensor TM Standby amount N Number of remaining required measurements S1 Number of remaining shots W Required amount RW Remaining required amount X Processing capacity Y Measurement capacity (mixing supply capacity)

Claims (6)

Each granular material fed from a plurality of material feeders that respectively store a plurality of types of granular material was weighed in a weighing machine so as to have a preset mass ratio, and mixed by mixing means A material combination supply device for supplying materials to a molding machine,
A signal generation unit that generates a predetermined molding completion schedule signal, a storage unit installed on the upper side of the material input port of the molding machine, and a standby amount of material from the weighing machine to the upstream side of the storage unit are detected. Standby amount detection means to perform,
Based on a predetermined program, calculate the required amount of material required in the molding machine by the end of molding after receiving the molding end schedule signal, subtract the standby amount from this required amount, and then the rest A weighing number control means for calculating the remaining required number of times corresponding to the required amount, causing the weighing machine to perform weighing of the remaining required number of times, and stopping the subsequent weighing operation. Material blending supply equipment. In claim 1,
The storage unit is provided with a material sensor that detects that the material level has dropped to a predetermined level,
The metering frequency control means calculates a material standby amount below a detection level of the material sensor, includes the material standby amount in the standby amount, and calculates the remaining required amount. apparatus. In claim 2,
The metering frequency control means calculates the necessary amount by subtracting the amount processed in the molding machine between the molding end scheduled signal and the material sensor material request signal. apparatus. In any one of Claims 1 thru | or 3,
The molding machine is an injection molding machine, and further includes an operation unit for inputting one shot amount in the injection molding machine and the number of remaining shots after the molding completion scheduled signal,
The material mixing and supplying apparatus, wherein the measurement number control means calculates the necessary amount based on one shot amount input from the operation unit and the number of remaining shots. In any one of Claims 1 thru | or 4,
Processing capacity detecting means for detecting the processing capacity of the material processed per unit time in the molding machine;
Compound supply capability detection means for detecting the compound supply capability of materials that can be supplied per unit time toward the molding machine;
Based on a predetermined program, the processing capacity is compared with the blending supply capacity, and when the blending supply capacity exceeds the processing capacity and can be reduced to a predetermined standard, the blending supply capacity is decreased. A material blending supply device further comprising blending supply capacity control means for performing blending supply by updating as described above. Each granular material supplied from a plurality of material supply machines that respectively store a plurality of types of granular material is weighed in a weighing machine so as to have a preset mass ratio, and mixed by mixing means. A material blending supply method for supplying to a molding machine,
It is required in the molding machine from the weighing machine to the upstream side of the storage portion installed on the upper side of the material input port of the molding machine and until the molding is finished after a predetermined molding completion schedule signal. A required amount of material, and subtracting the standby amount from the required amount, calculating a remaining required number of times corresponding to the remaining required amount, and measuring the remaining required number of times in the weighing machine. A material blending and supplying method characterized in that it is executed and the subsequent metering operation is stopped.

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