JP2557695Y2 - Electromagnetic vibration feeder for pharmaceutical powder supply - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic vibration feeder for supplying pharmaceutical powder .

[0002]

FIG. 4 shows a conventional pharmaceutical powder.
The trough 1 is fixed to a frame 2 by bolts 60. The frame 2 is connected to a base 5 by a pair of front and rear inclined plate springs 3, 4. I have. The base 5 is supported on the ground by coil springs 11 and 12 for vibration isolation. Base 5
An electromagnet mount 6 is integrally formed thereon, and an E-type iron core 7 having a magnetic pole surface 7a is fixed thereto, and a coil 8 is wound therearound. A movable core 9 is fixed to the frame 2, and a gap g is formed between the movable core 9 and the iron core 7. A coil lead wire 10 extends from the coil 8.

[0003] The conventional electromagnetic vibration feeder T for supplying pharmaceutical powder is constructed as described above. However, when an alternating current is applied to the coil 8, the gap between the magnetic pole surface 7 a of the iron core 7 and the movable core 9 is known. In this case, an alternating magnetic attraction force is generated, whereby the trough 1 linearly vibrates in the direction a, which is substantially perpendicular to the longitudinal direction of the leaf springs 3 and 4.

[0004] Such an electromagnetic vibration feeder T is used for pharmaceutical powders.
This is because it is used for the transfer of powder and its measurement accuracy must be high. However, when transferring other drugs, if the powder of the previous drug adheres to the trough 1 or other parts, the Water is sprayed not only on the trough 1 but also on the entire leaf springs 3, 4 and the iron core 7, etc., so that the efficacy of the medicine is adversely affected. For this reason, stainless steel is used for the trough 1 and the base 5 and the movable core 9 are plated, so that they do not rust even when sprayed with water and are not adversely affected, but the iron core 7 can be plated. First, the coil 8 is taped and impregnated with varnish to form a coating. However, this is insufficient, and in many cases, the iron core 7 rusts or the coil 8 is often damaged. For this reason, even if a predetermined current is applied to the coil 8 due to leakage of the coil 8 or defective insulation, or rust on the magnetic pole surface 7a of the iron core 7, a predetermined amplitude cannot be obtained in the trough 1 in some cases. .

[0005]

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems, and the entire apparatus can be washed many times with water.
It is another object of the present invention to provide an electromagnetic vibration feeder for supplying a pharmaceutical powder capable of maintaining its original characteristics for a long period of time .

[0006]

The object of the present invention is to provide a pair of front and rear inclined plate springs for connecting a longitudinal trough and a lower base block, and a front inclined plate spring among the pair of front and rear inclined plate springs. A pharmaceutical powder supply electromagnetic comprising: a movable core fixed to an upper end of a spring; an iron core having a magnetic pole surface opposed to the movable core with a gap therebetween; and an electromagnet driving unit including a coil wound on the iron core. in the vibrating feeder, the bets
The rough is made of stainless steel that can be freely attached to and detached from the movable core,
The base block, the inclined leaf spring, and the movable core
Is subjected to a plating process, and the electromagnet driving portion is further covered with a synthetic resin by molding , so that a large amount of current flows through the coil.
The movable core and the magnetic pole surface have an impact due to a change in magnitude.
The thickness corresponding to no void is defined as the thickness of the synthetic resin,
A magnitude substantially equal to the predetermined amplitude of the trough
As the distance between the surface of the synthetic resin and the movable core, the electromagnetic
Transfer of pharmaceutical powder on the trough by driving stone drive
The present invention is achieved by an electromagnetic vibration feeder for supplying a pharmaceutical powder , characterized in that:

[0007] In addition, the purpose of the above is
A pair of front and rear inclined leaf springs that connect to one base block
Of the front inclined leaf spring of the pair of front and rear inclined leaf springs.
A movable core fixed to the upper end, and a gap between the movable core and the movable core.
And an iron core having opposing magnetic pole faces and wound around the iron core.
A pharmaceutical powder supply having an electromagnet drive section comprising
In the feeding electromagnetic vibration feeder, the trough is movable.
Made of stainless steel that can be freely attached to and detached from the core,
Plating, plating on the inclined plate spring and the movable core
And further apply powder coating on the outer surface of the electromagnet drive section.
And the change in the magnitude of the current flowing through the coil
The thickness corresponding to the gap where the moving core and the pole face do not impact
Is the coating thickness of the powder coating, and a predetermined value of the trough
Make the size approximately equal to the amplitude between the powder coating surface and the
As the distance from the moving core, by driving the electromagnet driving unit
That the pharmaceutical powder is transferred on the trough.
Electromagnetic vibration feeder for supplying pharmaceutical powder
Achieved.

[0008] In addition, the purpose of the above is
A pair of front and rear inclined leaf springs that connect to one base block
Of the front inclined leaf spring of the pair of front and rear inclined leaf springs.
A movable core fixed to the upper end, and a gap between the movable core and the movable core.
And an iron core having opposing magnetic pole faces and wound around the iron core.
A pharmaceutical powder supply having an electromagnet drive section comprising
In the feeding electromagnetic vibration feeder, the trough is movable.
Made of stainless steel that can be freely attached to and detached from the core,
Plating, plating on the inclined plate spring and the movable core
And further immersing the electromagnet driving section in a synthetic resin solution.
As a result, the synthetic resin
A resin film is formed to change the magnitude of the current flowing through the coil.
Gap between the movable core and the magnetic pole surface that does not impact
Is defined as the thickness of the synthetic resin, and
The size of the synthetic resin is approximately equal to the predetermined amplitude of the rough.
As the distance between the surface and the movable core, the electromagnet driving unit
of Drive to transfer pharmaceutical powder on the trough
An electromagnetic vibration filter for supplying pharmaceutical powder, characterized in that
Achieved by

[0009]

According to the first aspect of the present invention, the electromagnet driving unit is synthesized.
The amount of current flowing through the coil, covered with a resin mold
The movable core does not impact the magnetic pole surface of the iron core
The thickness corresponding to the gap is defined as the thickness of the synthetic resin, and
A size approximately equal to the predetermined amplitude of the rough
Since the distance between the surface and the movable core is set, the movable core and iron
While minimizing leakage flux between the pole face of the core,
The current flowing through the coil can be reduced by
Pharmaceutical powder with non-coated electromagnetic drive
Approximately the same characteristics as the electromagnetic vibration feeder for supply
can do. In addition, mold coating of this synthetic resin
Cleaning of the electromagnet drive by jet water
Rust and coil damage will not impair its properties
No base block, inclined leaf spring, movable core
Water resistant to the removable trough on the movable core side
Each of these components is individually disassembled.
Cleaning for a long time
Sex can be maintained.

[0010] In addition, the invention of claim 2 and claim 3
Similar to the invention according to claim 1, but in particular an electromagnet
Claims because no formwork is required to cover the drive
The cost can be reduced as compared with the first invention.

Hereinafter, a pharmaceutical powder according to each embodiment of the present invention will be described.
The supply electromagnetic vibration feeder will be described with reference to the drawings.

FIG. 1 shows a pharmaceutical powder according to a first embodiment of the present invention.
3 shows an electromagnetic vibration feeder T ′ for supplying powder . The elongate trough 21 is made of stainless steel, and its shape is shown in FIG. 3, which is fixed to the frame 22 by a bottle 61 and is detachable. A leaf spring mounting member 23 is fixed to the front end of the frame 22 by welding, and a base block 24 is provided below the anti-vibration springs 27 and 28 below.
Supported by The frame 22 and the leaf spring mounting member 23 are connected to the base block 24 by a pair of front and rear inclined overlapping leaf springs 25 and 26. Base block 24
The plate springs 25 and 26 are plated, and the electromagnet driving section E according to the present invention is fixed to the core mounting section 24 a of the base block 24. The movable core 31 is fixed to the leaf spring mounting member 23 with a gap g 'in the electromagnet driving section E, and is also plated. The electromagnet driving unit E is formed by laminating a large number of silicon steel plates, and has a known structure, for example, an iron core 29 having an E-shaped magnetic pole surface 29a, and a coil 30 wound around the central magnetic pole. The coil 30 also has a known structure, and has a bobbin wound with a predetermined number of turns of an electric wire, and the surface thereof is subjected to a surface treatment for taping to impregnate the varnish. The lead terminal 3 of the coil 30
Reference numeral 9 is fixed to the above-mentioned core mounting portion 24a via a terminal mounting plate 32.

According to the present invention, the entirety of the iron core 29 and the coil 30 wound thereon is molded with the epoxy resin M in the present embodiment, so that the entire surface is formed of an M layer of epoxy resin. Coated. Although the overall shape is a rectangular shape due to the molding, the resin M covering the portion of the iron core 29 facing the movable core 31, ie, the magnetic pole surface 29a, is formed.
Is thinner than the other parts. This thickness is an example
For example, it is 0.5 to 1 mm, and the current flowing through the coil 30 is large.
Impact of the movable core 31 and the pole face 29a due to the change in the size
It is a size corresponding to a void that is not used. This mold M
Gap g from the front surface to the opposing surfaces of the movable core 31 'is 2mm for example, substantially equal to the predetermined amplitude of the trough 21
It is a big size. Therefore, when the thickness of the mold M is added, the maximum size is about 3 mm.
At a layer also magnetic flux leakage is so large rather than as the exciting coil 30, the iron core 29 in the reverse and the movable core 31
In order to reduce the leakage magnetic flux between
In order to reduce the current flowing through the magnetic attraction, if the magnetic attraction is made as small as possible, for example, 1 mm, even if a magnetic attraction that reduces the amplitude is obtained, a slight increase in voltage causes the magnetic attraction to decrease. It rises sharply, and the core 29, that is, the layer of the mold M collides with the movable core 31 according to the present embodiment, leading to the destruction of the mold M. The same is true when the distance from the movable core 9 is reduced. Further, since the magnetic permeability of the resin M of the mold is not so different from that of air, the distance from the magnetic pole surface 29a to the movable core 31 is the same as the conventional one, but the layer of the mold M on the magnetic pole surface 29a becomes thinner. However, the gap g '
Is smaller than the conventional g, but the gap is about 3 mm in the related art, and about 1 mm of the 3 mm is used as the mold layer in this embodiment, but the magnetic attraction force is greatly reduced. I won't let you.

A lead terminal 39 is extended from the coil 30 as described above, and an AC power supply is connected to this terminal as is well known. The entire electromagnet driving section E is mounted to the electromagnet mounting section 24a by bolts 66 via a mounting plate 65.

[0015] Supply of pharmaceutical powder according to the first embodiment of the present invention
The electromagnetic vibration feeder T 'is configured as described above,
Next, this operation will be described.

The coil 30 is energized by, for example, half-wave rectification of a commercial power supply as in the prior art. As a result, an alternating magnetic attraction force is generated between the magnetic pole surface 29a of the iron core 29 and the movable core 31, and the trough 21 linearly vibrates in a direction substantially perpendicular to the longitudinal direction of the leaf springs 25 and 26. Therefore, although not shown, the pharmaceutical powder supplied into the trough 21 is transported rightward in the figure at a speed corresponding to the amplitude of the trough 21.

The current supplied to the coil 30 is made substantially the same as the conventional one, and the same amplitude can be obtained in the trough 21. When it is desired to supply a powder of a drug of the type (1) with this same electromagnetic vibration feeder T ', the powder of the drug must not be mixed because it is a drug. Trough 21
In addition, depending on the environment, even if the powder adheres to another portion, for example, the electromagnet driving portion E, the powder that is scattered from now on may be mixed with the next type of powder in the trough 21. In this case, remove the trough 21 in the case of transport by changing the type of powder so is dangerous by compounding, this
This is washed with spouted water, and the electromagnet drive unit E and leaf spring 2
5,26, in the wash with water is also jetted base block 24 or the like. And after drying the entire powder of the previous pharmaceutical as clean state and washed <br/> have flow from all parts, and above by the driving of the next powder medicament is supplied to the trough 21 an electromagnet driving unit E The powder supply operation is performed in the same manner.

The first embodiment of the present invention has the above-described structure and operation, but has the following effects.

That is, in the conventional electromagnetic vibration feeder T for supplying a pharmaceutical powder, the iron core 7 having the magnetic pole surface 7a and the coil 8 wound therearound are exposed to the air, so that water is ejected to the core. Iron core 7 for cleaning
As a matter of course, water adheres, and also adheres to the surface of the coil 8, so that the iron core 7 eventually rusts, and the oil-impregnated surface of the coil 8 becomes bald, leading to lead inside the coil 8. There was a risk that the wires would be exposed or insulation failure would occur. In this case, the electromagnetic vibration feeder T
Cannot obtain a stable supply action of the pharmaceutical powder by the above method , and in some cases, the driving force may not be generated due to disconnection.

However, according to the electromagnetic vibration feeder T ' for supplying pharmaceutical powder according to the present embodiment, the core 29 having the magnetic pole surface 29a and the coil 30 wound around the core 29 are entirely molded with epoxy resin M. Therefore, even if the jetted water is applied to the core 29, water is prevented from directly hitting the iron core 29 and the coil 30, so that the iron core 29 does not rust, and the insulation of the coil 30 is excellent for a long time. To maintain. Therefore, the electromagnetic vibration feeder to which the electromagnet driving unit E is mounted can reliably perform a desired operation for a long period of time, and the trough 21, the leaf springs 25 and 26, the movable core
31 and the base block 24 are also waterproof.
Therefore, the entire electromagnetic vibration feeder T ′ can be washed with water many times.

[0021] The magnetic pole surface 2 of the movable core 31 and the iron core 29
9a while minimizing the leakage magnetic flux between them
The current flowing through the coil 30 can also be reduced.
Do Conventional pharmaceutical powder supply with no electromagnet drive
Maintain characteristics almost equivalent to those of electromagnetic vibration feeder T
be able to.

[0022] Although Figure 2 shows the electromagnetic drive portion F according to a second embodiment of the present invention, pharmaceutical powders equipped with this
The other structure of the supply electromagnetic vibration feeder is the same as that of the first embodiment and will not be described.

According to the present embodiment, the iron core 43 having the magnetic pole surface 43a has the same shape as that of FIG. 1 by compacting iron powder with a binder.
2 is wound around it, and by dipping
That is, the core 43 and the coil 42 wound around the core 43 are immersed in a solution of the epoxy resin to form an epoxy resin film m on the surface. The thickness t of the epoxy resin covering the magnetic pole surface 43a is 0.5 m as in the first embodiment.
m to 1 mm, and the movable core 41
Is 2 to 1.5 mm. Therefore, similarly to the first embodiment, the same operation as in the related art can be performed even in such an air gap.

It is apparent that the same effect as in the first embodiment can be obtained. However, according to the present embodiment, the entirety of the iron core 43 and the coil 42 wound therearound is coated with an epoxy resin film m by dipping. Is formed , the formwork is required in the first embodiment, but such a formwork is not required in the present embodiment, so that the cost can be further reduced. In addition, the electromagnet driving unit F of this embodiment is also mounted on the mounting plate 4.
4 is fixed to the base block.
3 may be integrally molded.

[0025] Although not shown may be formed a core and waterproof membrane across the so-called powder coating to the entire surface of the coil which is wound to have a pole face.
Even in such a case, the magnitude of the current flowing through the coil
The gap between the movable core and the magnetic pole surface
The applicable thickness shall be the coating thickness of the powder coating, and at the trough
Make the size almost equal to the constant amplitude
It is apparent that the same effect as that of the first and second embodiments can be obtained by configuring the distance as a distance from the first embodiment.

[0026] Having described the embodiments of the present invention, of course, the present invention is not limited to these, and various modifications are possible based on the technical idea of the present invention.

For example, in each of the embodiments described above, the present invention is applied to the E-shaped electromagnet and the coil wound thereon, but of course, the present invention is applied to an electromagnet of another shape having a magnetic pole surface, for example, a cylindrical iron core. May be applied.

[0028]

[Effect of the Invention] As described above, the pharmaceutical powder supply of the present invention is provided.
According to the feeding electromagnetic vibration feeder , the original characteristics may be impaired.
Washing the entire electromagnetic vibration feeder with jet water many times
It is also possible to use the coating film of the electromagnet
For conventional pharmaceutical powder supply while minimizing magnetic flux
It can secure almost the same characteristics as the electromagnetic vibration feeder.
Wear.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of an electromagnetic vibration feeder for supplying a pharmaceutical powder according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of an electromagnet driving unit in an electromagnetic vibration feeder for supplying pharmaceutical powder according to a second embodiment of the present invention;

FIG. 3 is a front view of the electromagnetic vibration feeder for supplying pharmaceutical powder of FIG. 1;

FIG. 4 is a side view of a conventional electromagnetic vibration feeder for supplying pharmaceutical powder .

[Explanation of symbols]

29 Iron core 29a Magnetic pole surface 30 Coil 42 Coil 43 Iron core 43a Magnetic pole surface E Electromagnet driving unit F Electromagnet driving unit M Epoxy resin layer m Epoxy resin layer T 'Electromagnetic vibration feeder for supplying pharmaceutical powder

Claims (3)

(57) [Scope of request for utility model registration] 1. A pair of front and rear inclined leaf springs for connecting a longitudinal trough and a lower base block, and a movable core fixed to an upper end of a front inclined leaf spring among the pair of front and rear inclined leaf springs. And an electromagnetic vibration feeder for supplying a pharmaceutical powder , comprising: an iron core having a magnetic pole surface opposed to the movable core with a gap therebetween; and an electromagnet drive unit including a coil wound around the iron core. Detachable on the side
And the base block and the inclined plate
The spring and the movable core plated, and further coated with a mold the electromagnetic drive unit in synthetic resin, wherein
Due to the change in the magnitude of the current flowing through the coil,
The thickness corresponding to the gap that does not impact the pole face is
The film thickness of the synthetic resin, and approximately equal to the predetermined amplitude of the trough
Equal size between the surface of the synthetic resin and the movable core
As the distance, the trough is driven by the electromagnet driving unit.
Characterized in that the pharmaceutical powder is transferred above
Electromagnetic vibration feeder for supplying pharmaceutical powder . 2. A pair of front and rear inclined leaf springs for connecting a longitudinal trough and a lower base block, and a movable core fixed to an upper end of a front inclined leaf spring of the pair of front and rear inclined leaf springs. And an electromagnetic vibration feeder for supplying a pharmaceutical powder , comprising: an iron core having a magnetic pole surface opposed to the movable core with a gap therebetween; and an electromagnet drive unit including a coil wound around the iron core. Detachable on the side
And the base block and the inclined plate
A plating process is applied to the spring and the movable core, and a powder coating is applied to an outer surface of the electromagnet driving unit, so that the coil is
The movable core and the magnetic pole are changed by changing the magnitude of the flowing current.
The thickness corresponding to the gap where the surface does not impact
Paint thickness and approximately equal to the predetermined amplitude of the trough
The size and the distance between the surface of the powder coating and the movable core
Then, a medical device is driven on the trough by driving the electromagnet driving unit.
Drug, characterized in that so as to transfer the drug powder
Electromagnetic vibration feeder for powder supply . 3. A pair of front and rear inclined leaf springs for connecting a longitudinal trough and a lower base block, and a movable core fixed to an upper end of a front inclined leaf spring among the pair of front and rear inclined leaf springs. And an electromagnetic vibration feeder for supplying a pharmaceutical powder , comprising: an iron core having a magnetic pole surface opposed to the movable core with a gap therebetween; and an electromagnet drive unit including a coil wound around the iron core. Detachable on the side
And the base block and the inclined plate
A plating process is applied to the spring and the movable core, and furthermore, the electromagnet driving unit is immersed in a synthetic resin solution to form a coating of the synthetic resin on the entire surface of the electromagnet driving unit . Possible due to size change
The thickness corresponding to the gap where the moving core and the pole face do not impact
Is the film thickness of the synthetic resin, and the predetermined vibration of the trough is
The movable resin has a size substantially equal to the width and the surface of the synthetic resin
As the distance from the core, the drive by the electromagnet drive unit
An electromagnetic vibration feeder for supplying pharmaceutical powder , wherein the pharmaceutical powder is transferred on the trough .