JP2563196Y2 - Powdered dose metering device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metering device for continuously supplying a predetermined amount of powder into a hopper in a divided volume.

[0002]

2. Description of the Related Art Conventionally, a fixed amount of powder is continuously supplied into a hopper, and the powder falling from a lower outlet of the hopper is continuously packaged by a heat-fusible wrapping paper. ing.

[0003] A fixed-rate supply device is used to supply the powder to the hopper.

Various types of powdered medicine dispensing apparatuses have been proposed. The applicant of the present application has provided a powdered medicine feeding feeder on a distributing dish that is driven to rotate in one direction, and from the feeder, an annular ring on the outer peripheral portion of the dispensing dish. Two sets of powdered medicine constant supply units that continuously supply powdered powder into the groove and scrape powdered powder that is uniformly deposited in the annular groove by the scraping device in a fixed amount in the outer diameter direction of the distribution dish. There has already been proposed a fixed-amount supply apparatus provided on the left and right sides and provided with a common hopper between distribution plates of the powdered medicine fixed-amount supply unit (Japanese Utility Model Application No. 1-135728).

[0005] In the above-mentioned fixed quantity supply device, when the powdered medicine is supplied to the dispensing dish of one unit, the powdered medicine can be scraped off from the dispensing dish of the other unit by a fixed amount, so that the fixed quantity supply operation of the powdered medicine to the hopper can be efficiently performed. It has the feature that it can be performed.

[0006]

By the way, in the above described fixed amount supply apparatus, the dispensing plates in the two sets of powdered fixed amount supply units have the same height, and the powder on the dispensing plates is shared by a common hopper provided between the dispensing plates. When scraping the powder on one dispensing dish into the hopper to scrape off, depending on the type of powder, the powder scatters when scraping and falls on the other dispensing dish,
There is a risk of mixing with the powder supplied to the distribution dish.

[0007] The present invention is directed to a dispensing apparatus having two powder dispensing unit for preventing dispersing of the powder which is scraped off by the scraping device on the dispensing plate of the other unit, and dispensing. It is a technical task to reduce the size of the device.

[0008]

In order to solve the above-mentioned problem, in the present invention, the dispensing plates of the two powder dispensing fixed quantity supply units are arranged with a step so that a part of the outer periphery is vertically overlapped. A common hopper for receiving powdered medicine that is scraped from each dispensing dish to the outside in the radial direction of the dispensing dish by the scraping device by the scraping device is employed below the dispensing dish from the overlapping position to the rear side in the rotation direction of the dispensing dish. It is.

[0009]

As described above, the dispensing plates of the two powder dispensing fixed-quantity supply units are provided with a step so that a part of the outer periphery is vertically overlapped, and a common hopper is provided on the rear side in the rotation direction of the dispensing plate from the overlapping position. Thereby, the scraping direction of the powdered powder scraped in the outer diameter direction of the dispensing dish by the scraping device becomes a direction deviating from the outer periphery of the other dispensing dish, and the powdered drug scraped down falls on the other dispensing dish. Can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, two supports 2a and 2b are provided on the left and right sides of the machine base 1, and a fixed amount of powdered drug supply units U ₁ and U ₂ is provided on each of the supports 2a and 2b. Is provided.

Here, the powdered medicine fixed supply units U ₁ , U ₂
Urging Because the same configuration, described below one powdered medicine dosing unit U _1, for the other powdered medicine dosing unit U _2, the same reference numerals in the one powdered medicine supply unit U ₁ equal parts and And the description is omitted.

The powdered medicine fixed supply unit U ₁ is provided with a distribution dish 3
A rotary drive device 10 for the dispensing plate 3; a powder feeder 20 for supplying the powder onto the dispensing plate 3 from a fixed position on the dispensing plate 3; A scraper 30 for scraping the outer side in the outer diameter direction.

The distribution dish 3 has an annular shape, and an annular groove 4 is provided on the outer peripheral portion of the upper surface thereof, and the groove bottom is an arc surface 5.

A guide ring 6 is provided on the inner diameter of the distribution dish 3.
Is installed. The guide ring 6 is mounted on the support 2a.
It is rotatably supported by a plurality of rollers 7 provided above.

A rotary driving device 1 for rotating the distribution dish 3
Reference numeral 0 indicates that the pinion 12 attached to the rotating shaft of the motor 11 is meshed with the ring gear 13 attached to the lower surface of the distribution plate 3, and the distribution plate 3 is rotated in the direction of the arrow in FIG.

FIG. 3 shows details of the powder supply feeder 20. The powdered medicine supply feeder 20 has a hopper 21 provided on the support base 2a and a chute 22 provided below the outlet of the hopper 21. The chute 22 is supported by an upper vibrator 23, Body 23 and lower vibrating body 24
Are connected by two inclined plate springs 25, and the support table 2a
The lower vibration body 25 is elastically supported by a spring 26 provided above.

An electromagnet 27 is mounted on the lower vibrating body 24, and the upper vibrating body 2 is
3 is sucked and released, and a slight vibration is applied to the chute 22.
The powder supplied above is moved toward the tip of the chute 22 so that a certain amount of powder is continuously dropped from the tip of the chute 22 into the annular groove 4.

A plurality of the powdered medicine supply feeders 20 may be provided on the distribution dish 3.

FIGS. 4 and 5 show a device 30 for scraping the powder supplied into the annular groove 4 of the distribution dish 3. In the scraping device 30, a bracket 31 is mounted on a support 2a, a motor 32 and a rotating shaft 33 rotated by the motor 32 are mounted on the bracket 31, and one end of an arm 34 is provided outside the rotating shaft 33. Tube part 3 toward the part
5 is rotatably supported by being fitted therein, and the rotor shaft 38 of the split rotor 37 is inserted into a bearing cylinder 36 provided at the other end of the arm 34 and rotatably supported. When the arm 34 swings, the split rotor 37 is moved into the annular groove 4.
To move up and down.

Here, the split rotor 37 comprises a disc 39 and a scraping plate 40 attached to one side of the disc 39, and the radius of the disc 39 is equal to the radius of the arc surface 5 of the annular groove 4. ing. For this reason, the divided rotor 37 is lowered to fit the lower portion of the outer periphery into the annular groove 4 and the divided rotor 37 is rotated in this state, so that the powdered medicine in the annular groove 4 is dispensed by the scraping plate 40 into the distribution dish 3. Can be scraped out in the outer diameter direction.

In order to rotate the split rotor 37, the rotation of the rotation shaft 33 is transmitted to the intermediate shaft 42 inserted into the arm 34 via the bevel gear 41, and the rotation of the intermediate shaft 42 is transmitted to the rotor shaft via the bevel gear 43. 38.

Further, in order to move the divided rotor 37 up and down with respect to the annular groove 4, a roller supporting piece 44
And a cam follower 45 supported by the roller supporting piece 44 is provided in parallel with the rotation shaft 33.
7 and the cam shaft 46 is rotated by a cam drive motor 48 supported by the bracket 31.

The annular groove 4 of the distribution dish 3 is cleaned by the cleaner 50. The cleaner device 50 rotatably supports one end of the suction tube 51 on the rotating shaft 33, and has a convex curved surface 52 facing the arc surface 5 of the annular groove 4 on the other end of the suction tube 51.
The suction cylinder 51 is pivoted downward about the rotation shaft 33 to bring the convex curved surface 52 into contact with the arc surface 5 of the annular groove 4, and the suction cylinder 51 is formed into a convex curved surface 52 from the suction cylinder 51. The adhering matter on the circular arc surface 5 of the annular groove 4 is sucked and removed by the suction force acting on the opening 53.

In order to swing the suction cylinder 51, a roller support piece 54 is provided on the outer periphery of one end of the suction cylinder 51, and a cam follower 55 supported by the roller support piece 54 is attached to the cam shaft 46. The suction tube 51 is made to swing up and down by the rotation of the cam 56 by contact with the driving cam 56.

The two cams 47 and 56 attached to the cam shaft 46 are out of phase, and the split rotor 37 is
Convex surface 5 of suction cylinder 51 when in contact with arc surface 5 of
Reference numeral 2 is such that the suction tube 51 does not interfere with the operation of scraping out the powder by separating from the arc surface 5.

Instead of the above-described cleaner device 50, a brush roll may be provided movably with respect to the arc surface 5 of the annular groove 4, and the brush roll may be rotated in contact with the arc surface. Good.

The powdered medicine supply units U ₁ and U ₂ have the above structure, and the left and right powdered medicine supply units U ₁ and U ₂
As shown in FIGS. 1 and 2, each of the distribution dishes 3 is arranged with a step so that a part of the outer periphery is vertically overlapped, and a common hopper is disposed below the distribution dish 3 on the rear side in the rotation direction of the distribution dish 3. 60 are provided. Each of the scraping devices 30 is designed to scrape the powder toward its common hopper 60.

The powdered medicine supply device shown in the embodiment has the above-mentioned structure. When the powdered medicine is supplied to the common hopper 60, the powdered medicine is supplied onto the distribution plate 3 and then scraped off by the scraping device 30. In this case, when powder is supplied to one of the two distribution dishes 3, the powder on the other distribution dish 3 is scraped off.

To supply the powder to the dispensing dish 3, the dispensing dish 3 is rotated at a constant speed in one direction, and the powder feeding feeder 20 is driven so that a fixed amount of the powder put in the hopper 21 is supplied to the chute 22. Drop a fixed amount continuously from the tip,
Uniform deposition is performed over the entire circumferential direction of the annular groove 4.

When the powder is scraped off, the divided rotor 37 is lowered into the annular groove 4 by the downward swing of the arm 34, and the divided rotor 37 is rotated at a constant speed in one direction and distributed. The plate 3 is also rotated at a constant speed in one direction.

By the rotation of the split rotor 37, the powder deposited in the annular groove 4 is scraped out of the distribution dish 3 by an amount corresponding to the width of the scraping plate 40 and falls into the hopper 60. The portion emptied by the scraping is moved in the circumferential direction by the rotation of the distribution dish 3. As a result, the powdered medicine in the annular groove 4 is intermittently discharged into the hopper 60 by a fixed amount.

Here, the common hopper 60 includes two distribution dishes 3
Are disposed on the rear side in the rotation direction of the distribution plate 3 from the overlapping portion where the powdery medicine is vertically overlapped, and the scraping device 30 scrapes the powder toward the common hopper 60. Therefore, the scraping direction of the powder (arrow (a) in FIG. 1) Is a direction deviating from the outer periphery of the other distribution dish 3. For this reason, even if the powdered medicine to be scraped off is vigorously scraped off, it does not fall onto the other distribution dish 3.

[0034]

As described above, in the powdered medicine supply device according to the present invention, since the direction in which the powder on the dispensing dish is scraped off the outer periphery of the other dispensing dish, the powder that has been scraped off Can be prevented from mixing with the powder supplied on the other distribution dish.

Further, since the two distribution dishes are arranged with a step so that a part of the outer periphery is vertically overlapped, the two distribution dishes are compared with the one provided on the left and right with an interval between the distribution dishes. Thus, it is possible to reduce the size of the powdered medicine fixed supply device.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a powdered medicine supply device according to the present invention.

FIG. 2 is a vertical sectional front view of the above.

FIG. 3 is a sectional view of the powder supply feeder according to the first embodiment;

FIG. 4 is a perspective view of the scraping device according to the first embodiment;

FIG. 5 is a cross-sectional plan view of the above.

[Explanation of symbols]

U ₁ , U ₂ powder dispensing fixed quantity supply unit 3 distribution dish 4 annular groove 30 scraping device 60 common hopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A circular dispensing dish having an annular groove on an outer peripheral portion of an upper surface, and a powdered medicine uniformly supplied over the entire annular groove is divided by a fixed amount at the time of rotation of the dispensing dish, and is scraped in a radial direction of the dispensing dish. Two sets of powder dispensing fixed quantity supply units having a dropping and scraping device are arranged on the left and right, and a common hopper for receiving powdered powder scraped from each distributing dish is provided between distribution plates of each powder fixed quantity dispensing unit. In the supply device, the aforementioned 2
The dispensing trays of the set of powdered powder fixed quantity supply units are arranged with steps so that a part of the outer periphery is vertically overlapped, and the common hopper is provided below the dispensing plate from the overlapping position to the rear side in the rotation direction of the dispensing plate. Powdered medicine fixed supply device.