JP3684396B2 - Powder quantitative supply equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a powder quantitative supply device.
[0002]
[Prior art]
Conventionally, as a technology related to a powder conveying device, Japanese Patent Application Laid-Open No. 7-267363 (variable pitch powder conveying device) and Japanese Patent Application Laid-Open No. 8-149589 (powder) which have already been filed by the inventors of the present application. And a tube-type electrode by electrostatic force, and the electrostatic force causes the powder to be conveyed and the powder to be separated.
[0003]
[Problems to be solved by the invention]
At present, it is desired to transport powder as described above, and to quantitatively supply the transported powder. In that case, it is preferable to measure as much as possible during the conveyance of the powder and to perform accurate quantitative supply.
[0004]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a powder quantitative supply device capable of performing measurement during powder conveyance and performing accurate quantitative supply.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides
(1) It consists of a powder conveyance part consisting of a horizontal first tube-type electrode that generates an electrostatic force, and a horizontal second tube-type electrode that generates an electrostatic force having a diameter larger than that of the first tube-type electrode, a powder metering and supply unit that links with the powder transfer section, and the electronic balance provided in the powder metered in part, and a computer for processing information from the electronic balance, the information from the computer A powder quantitative supply device comprising a drive control device for controlling powder conveyance, measurement and supply based on the powder measurement and supply unit, the powder measurement and supply unit being movable away from the powder conveyance unit It is configured.
[0006]
(2) a powder conveying unit, a powder weighing unit linked to the powder conveying unit, an electronic balance provided in the powder weighing unit, a powder supply unit linked to the powder weighing unit, A powder quantitative supply device comprising: a computer that processes information from the electronic balance; and a drive control device that controls powder conveyance, weighing, and supply based on the information from the computer , body conveying unit comprises a first tubular electrode of the lateral resulting electrostatic force second tubular electrode of the lateral the powder weighing unit caused a large electrostatic force diameter than the first tubular electrode The powder supply unit is composed of a horizontal third tube electrode that generates an electrostatic force having a diameter larger than that of the second tube electrode .
[0007]
(3) a powder metering and supply unit, and the electronic balance provided in the powder metered in part, and a computer for processing information from the electronic balance, the powder transfer based on the information from the computer A powder quantitative supply device comprising a drive control device for controlling measurement and supply ,
[0008]
Before Kikotai metered in part consists vertical tube type electrode causing an electrostatic force, in which the movable tubular electrode of the vertical-type feed point of the powder.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
FIG. 1 is a configuration diagram of a powder quantitative supply apparatus according to a first embodiment of the present invention, and FIG. 2 is a partially enlarged perspective view showing an example of the quantitative supply apparatus. Here, the term “powder” is used synonymously with powder or powder.
[0011]
In this figure, 1 is a raw material powder, and this raw material powder 1 is conveyed from a powder conveying part (horizontal type) 11 and discharged to a powder metering / supplying part (horizontal type) 12.
[0012]
The powder weighing and supplying unit 12 is provided with an electronic balance 13, and a computer 14 is connected to the electronic balance 13. Reference numeral 15 denotes a drive control device having a power source connected to the computer 14, and 16 denotes a receiving unit for the conveyed powder. Here, the output from the drive control device 15 is connected to the electrodes that generate the electrostatic forces of the powder transport unit 11 and the powder metering / supply unit 12 to enable drive control thereof.
[0013]
Hereinafter, this powder quantitative supply device will be described.
[0014]
This powder quantitative supply device uses two transfer devices, that is, a powder transfer unit 11 and a powder metering / supply unit 12. In the powder weighing / supplying unit 12, weighing is always performed by the electronic balance 13, and the signal is sent to the connected computer 14. The computer 14 passes a drive control device 15 in response to a signal from the electronic balance 13, and signals from the drive control device 15 such as conveying and stopping the powder in the powder conveying unit 11 and the powder weighing / supplying unit 12. Is configured to output.
[0015]
The powder weighing / supplying unit 12 connected to the electronic balance 13 measures the powder sent from the powder conveying unit 11 and supplies the measured powder. There is a step D between the conveying device of the powder conveying unit 11 and the conveying device of the powder weighing / supplying unit 12 because the powder remains in the powder weighing / supplying unit 12 above and below the electronic balance 13. This is to prevent measurement errors caused by the contact between the powder transport unit 11 and the powder weighing / supplying unit 12.
[0016]
FIG. 2 is a diagram showing a tube electrode by electrostatic force, part of which is a double structure, as an example of a conveying device of a powder quantitative supply device.
[0017]
The method of conveying powder using electrostatic force is very energy efficient because almost no current flows through the tube- type electrode, and the tube-type without affecting the measuring system through the spring portion of the electronic balance 13. Power can be supplied to the electrodes. Moreover, since the range of the powder which can be conveyed is wide, it can utilize for the fixed quantity supply of various powder.
[0018]
In addition, since no excessive external force is directly applied to the particles, there is little pulverization of the particles in the conveying process, and it is possible to move only one particle, so that a very accurate quantitative supply can be performed. is there. In addition, while the transfer method using vibration or air is difficult to measure using an electronic balance during the transfer process, the transfer method using electrostatic force does not affect the weighing system. It is characterized by being able to measure in the middle.
[0019]
Hereinafter, the state of movement of the powder by this powder quantitative supply device will be described with reference to FIGS.
[0020]
(1) First, as shown in FIG. 3A, the raw material powder 1 is conveyed from the powder conveyance unit 11 to the powder measurement / supply unit 12. At this time, the electronic balance 13 measures the conveyed powder.
[0021]
(2) Next, as shown in FIG. 3 (b), when the amount of the powder conveyed to the powder metering / supplying unit 12 becomes larger than the target powder supply amount or a fixed amount, the powder The conveyance of the powder from the conveyance unit 11 is temporarily stopped.
[0022]
(3) Next, as shown in FIG. 3C, the powder in the powder metering / supplying unit 12 is transported to supply the powder. At this time, the electronic balance 13 calculates the amount of the supplied powder by measuring the amount of the powder remaining in the powder measuring / supplying unit 12, and when the target powder supply amount is reached, Stop supplying.
[0023]
(4) Next, as shown in FIG. 4A, the conveyance of the powder from the powder conveyance unit 11 is started again.
[0024]
(5) Next, as shown in FIG. 4 (b), the powder is conveyed while the powder is being measured in the powder measuring / supplying unit 12.
[0025]
By repeating the above operation, continuous powder supply is performed.
[0026]
Next, a second embodiment of the present invention will be described.
[0027]
FIG. 5 is a block diagram of a powder quantitative supply apparatus showing a second embodiment of the present invention. Note that this embodiment is generally the same as that of the first embodiment, and the same portions are denoted by the same reference numerals, and descriptions thereof are omitted because they are duplicated.
[0028]
The difference from the first embodiment is that the tube electrode of the powder weighing / supplying unit is shortened, and the electronic balance 13 and the conveying device of the powder weighing / supplying unit (horizontal type) 21 are moved to move the powder. However, there is no particular difference from the apparatus of the first embodiment.
[0029]
Hereinafter, the state of the movement of the powder by this powder quantitative supply device will be described with reference to FIGS.
[0030]
(1) First, as shown in FIG. 6A, the raw material powder 1 is conveyed from the powder conveyance unit 11 to the powder measurement / supply unit 21. At this time, the electronic balance 13 measures the conveyed powder.
[0031]
(2) Next, as shown in FIG. 6 (b), when the amount of powder conveyed to the powder metering / supplying unit 21 is larger than the target powder supply amount or a fixed amount, the powder The conveyance of the powder from the conveyance unit 11 is temporarily stopped.
[0032]
(3) Next, as shown in FIG. 6C, the tube-type electrode of the powder weighing / supplying unit 21 is moved together with the electronic balance 13 and moved to the supply part.
[0033]
(4) Next, as shown in FIG. 7A, powder is supplied from the powder metering / supplying unit 21. At this time, the supply may be accelerated by tilting the powder measurement / supply unit 21. At this time, the electronic balance 13 measures the amount of powder remaining in the powder weighing / supplying unit 21, and supplies the supply amount based on the difference from the amount of powder supplied to the powder weighing / supplying unit 21. Calculate and stop supplying powder when the supply amount reaches the target amount.
[0034]
(5) Next, as shown in FIG. 7B, the tube-type electrode of the powder metering / supply unit 11 is returned to the original position, and the conveyance from the powder conveyance unit 11 is started again.
[0035]
By repeating the above operation, continuous powder supply is performed.
[0036]
In this powder quantitative supply device, the tube-type electrode of the powder metering / supply unit 21 is short and the tube-type electrode is moved to the supply portion, so that the time required for supplying the powder is shortened, and the powder conveyance Since the time for stopping the powder at the section is also shortened, the powder can be supplied efficiently. However, it takes time to move the powder weighing / feeding unit 21 and return it to the original position accurately, and this time and accuracy become a problem.
[0037]
Next, a third embodiment of the present invention will be described.
[0038]
FIG. 8 is a block diagram of a powder quantitative supply apparatus showing a third embodiment of the present invention. Note that this embodiment also generally matches that of the first embodiment, and the same portions are denoted by the same reference numerals, and descriptions thereof are omitted because they are duplicated.
[0039]
The difference from the first embodiment is that the powder metering / feeding unit is divided into two and uses three tube-type electrodes in the form of a telescope. That is, it is composed of three tube-type electrodes, that is, a powder transport unit 11, a powder metering unit (horizontal type) 31, and a powder supply unit 32.
[0040]
In this powder quantitative supply device, the powder sent from the tube-type electrode of the powder transport unit 11 is measured by the tube-type electrode of the powder measurement unit 31, and the powder-feeding unit 32 uses the tube-type electrode of the powder supply unit 32. The powder is supplied. Here, the tube-type electrode of the powder supply unit 32 has a large diameter so as not to contact the conveying device of the powder measurement unit 31.
[0041]
Hereinafter, the state of movement of the powder by the powder quantitative supply device will be described with reference to FIGS.
[0042]
(1) First, as shown in FIG. 9A, the raw material powder 1 is conveyed from the powder conveyance unit 11 to the powder measurement unit 31. At this time, the electronic balance 13 measures the conveyed powder.
[0043]
(2) Next, as shown in FIG. 9B, when the amount of powder conveyed to the powder metering unit 31 becomes a target supply amount or a fixed amount larger than the supply amount, from the powder conveyance unit 11 Is temporarily stopped.
[0044]
(3) Next, as shown in FIG. 9C, the powder weighed by the powder weighing unit 31 is conveyed from the powder weighing unit 31 to the powder supply unit 32.
[0045]
(4) At this time, the electronic balance 13 measures the amount of powder remaining in the powder measuring unit 31 and calculates the supply amount from the difference from the amount of powder supplied to the powder measuring unit 31. As shown in FIG. 10A, the supply of powder is stopped when the supply amount reaches the target amount.
[0046]
(5) Next, as shown in FIG. 10 (b), the conveyance of the powder is started from the powder conveyance unit 11, and at the same time, the powder is supplied from the powder supply unit 32.
[0047]
The powder is continuously supplied in a constant quantity by repeating the above operation.
[0048]
If the transport of powder from the powder transport unit is stopped after the powder has been transported to the powder metering / supply unit, it will take time to supply the powder once. .
[0049]
In order to avoid this, as shown in this example, the next measurement is performed while supplying the powder by carrying it in the tube-type electrode while measuring at the powder measurement / supply unit. Therefore, the time required for supply can be shortened, and the quantitative powder supply can be performed efficiently and continuously.
[0050]
Since the tube-type electrode can transport particles in the vertical direction, it can also be configured as follows.
[0051]
Next, a fourth embodiment of the present invention will be described.
[0052]
FIG. 11 is a block diagram of a powder quantitative supply apparatus showing a fourth embodiment of the present invention.
[0053]
This powder quantitative supply device is composed of a single tube-type electrode (powder metering / feeding unit) 41. After the raw material powder 40 is sucked up in the vertical direction and measured by the electronic balance 43, the drive control is performed. The apparatus 45 is operated, the conveying apparatus is moved to the powder supply part (powder receiving part) 46, and the powder is supplied.
[0054]
Hereinafter, the state of movement of the powder by the powder quantitative supply device will be described with reference to FIGS.
[0055]
(1) First, as shown in FIG. 12A, the raw material powder 40 is lifted in the vertical direction by the tube-type electrode of the powder metering / supplying unit 41. At this time, the electronic balance 43 measures the sucked powder.
[0056]
(2) Next, as shown in FIG. 12 (b), when the amount of powder lifted by the tube-type electrode 41 reaches a target amount, the lifting of the powder is stopped and the powder is attracted (to the electrode). While the voltage is applied), the tube type electrode 41 is moved together with the electronic balance 43.
[0057]
(3) Next, as shown in FIG. 12C, the tube-type electrode 41 is moved to the powder supply portion (powder receiving portion) 46.
[0058]
(4) Next, as shown in FIG. 13A, the force for sucking the powder is cut. Alternatively, a signal that the powder moves downward is supplied and the powder is supplied.
[0059]
(5) Next, as shown in FIG. 13B, after the powder supply is completed, the tube-type electrode 41 is returned to the position of the raw material powder 40, and the powder measurement is started again.
[0060]
The powder is continuously supplied in a constant quantity by repeating the above operation.
[0061]
In addition, as a method for conveying powder to the tube-type electrode of the powder metering / supplying unit, the following embodiments can be considered.
[0062]
Next, a fifth embodiment of the present invention will be described.
[0063]
FIG. 14 is a block diagram of a powder quantitative supply apparatus showing a fifth embodiment of the present invention.
[0064]
In this embodiment, a tube-type electrode is used as a powder conveyance unit, and the raw material powder 50 is supplied to the tube-type electrode of the powder metering / supply unit 52 from above. At this time, it is necessary to prevent the tube-type electrode of the powder conveying unit 51 from touching the electrode of the powder measuring / supplying unit 52. In FIG. 14, the constricted part 52A is formed in the middle of the tube-type electrode of the powder measuring / supplying part 52 in order to prevent the powder from the powder conveying part 51 from dropping down as it is. .
[0065]
In this powder quantitative supply device, the powder is measured, transported and supplied by one tube-type electrode, so that the structure of the device is simplified. However, there is a possibility that the amount of powder supply varies because the time required for one supply becomes long, or particles are spilled while the sucked powder is moved to the supply position.
[0066]
In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.
[0067]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
[0068]
(A) It is possible to measure accurately during the conveyance of the powder and to perform an accurate quantitative supply.
[0069]
(B) Since almost no current flows through the tube electrode having electrostatic force, the energy efficiency is very good, and power is supplied to the tube electrode without affecting the measuring system through the spring portion of the electronic balance. Yes. Moreover, since the range of the powder which can be conveyed is wide, it can utilize for the fixed quantity supply of various powder.
[0070]
(C) Since the tube-type electrode of the powder metering / supply unit is short and the tube-type electrode is moved to the supply part, the time required for supply can be shortened, and the powder is stopped at the powder conveyance unit. Since the time can be shortened, the powder can be supplied efficiently.
[0071]
(D) By carrying in the tube-type electrode while measuring at the powder measurement / supply unit, the next measurement can be performed while supplying the powder, and the time required for supply can be shortened. This makes it possible to efficiently and continuously supply a fixed amount of powder.
[0072]
(E) Since the powder is measured, transported and supplied by one tube-type electrode, the structure of the apparatus is simplified.
[0073]
(F) Since powder is measured, conveyed, and supplied by one vertical tube-type electrode, the structure of the apparatus is simplified and the lateral space can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a powder quantitative supply apparatus according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged perspective view showing an example of a powder quantitative supply apparatus according to the first embodiment of the present invention.
FIG. 3 is a view (No. 1) showing how powder moves according to the first embodiment of the present invention.
FIG. 4 is a view (No. 2) showing a state of movement of powder according to the first embodiment of the present invention.
FIG. 5 is a configuration diagram of a powder quantitative supply apparatus showing a second embodiment of the present invention.
FIG. 6 is a view (No. 1) showing a state of movement of powder according to a second embodiment of the present invention.
FIG. 7 is a view (No. 2) showing a state of movement of powder according to the second embodiment of the present invention.
FIG. 8 is a configuration diagram of a powder quantitative supply apparatus according to a third embodiment of the present invention.
FIG. 9 is a view (No. 1) showing how a powder moves according to a third embodiment of the present invention.
FIG. 10 is a view (No. 2) showing a state of movement of powder according to the third embodiment of the present invention.
FIG. 11 is a configuration diagram of a powder quantitative supply apparatus according to a fourth embodiment of the present invention.
FIG. 12 is a view (No. 1) showing how a powder moves according to a fourth embodiment of the present invention.
FIG. 13 is a view (No. 2) showing a state of movement of powder according to the fourth embodiment of the present invention.
FIG. 14 is a configuration diagram of a powder quantitative supply apparatus showing a fifth embodiment of the present invention.
[Explanation of symbols]
1, 40, 50 Raw material powder 11 Powder transport unit 12, 21 Powder weighing / supply unit 13, 43 Electronic balance 14 Computer 15, 45 Drive control device 16, 46 Powder receiving unit (powder supply unit)
31 Powder Measuring Unit 32 Powder Supplying Unit 41 One Tube Type Electrode (Powder Measuring / Supplying Unit)
51 Powder conveying section (vertical type)
52 Powder metering / feeding section (vertical)
52A constriction

Claims (3)

(A) a powder transport unit composed of a horizontal first tube-type electrode that generates an electrostatic force ;
(B) a powder-type metering / feeding unit which is composed of a horizontal-type second tube-type electrode that generates an electrostatic force having a diameter larger than that of the first tube-type electrode, and is linked to the powder conveyance unit;
(C) an electronic balance provided in the powder weighing and supplying unit;
(D) a computer for processing information from the electronic balance;
(E) A powder quantitative supply device comprising a drive control device for controlling powder conveyance, measurement, and supply based on information from the computer, wherein the powder measurement / supply unit An apparatus for quantitatively supplying powder, characterized in that it is configured to be movable away from the transport section. (A) a powder conveying unit;
(B) a powder metering unit associated with the powder transport unit;
(C) an electronic balance provided in the powder weighing unit;
(D) a powder supply unit associated with the powder metering unit;
(E) a computer for processing information from the electronic balance;
(F) A powder quantitative supply device comprising a drive control device for controlling powder conveyance / metering / supply based on information from the computer, wherein the powder conveyance unit is a horizontal type generating electrostatic force The powder metering unit includes a horizontal second tube electrode that generates an electrostatic force having a diameter larger than that of the first tube electrode, and the powder supply unit includes the first tube electrode. 2. A powder quantitative supply device comprising a horizontal third tube-type electrode that generates an electrostatic force having a diameter larger than that of the tube-type electrode of 2. (A) a powder weighing / supplying unit;
(C) an electronic balance provided in the powder weighing and supplying unit;
(D) a computer for processing information from the electronic balance;
(E) A powder quantitative supply device comprising a drive control device for controlling powder conveyance / metering / supply based on information from the computer, wherein the powder metering / supply unit has an electrostatic force An apparatus for quantitatively supplying powder, comprising: a vertical tube electrode that is generated, wherein the vertical tube electrode is movable to a powder supply location.

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