JPS6288724A - Feeding device for solid tablet - Google Patents

Abstract

PURPOSE:To prevent stop of the flow of solid tablets and to enable to perform high speed processing, by a method wherein the inner surface of a conduit for passage of solid tablet is formed in a twisted state. CONSTITUTION:The inner surface of a conduit 8 is formed in a twisted state so that during insertion of solid tablets A through the upper part of the conduit 8 into its interior and during movement within the conduit through the lower part of which the tablets are taken out in a place, the adjoining solid tablets A are prevented from moving over each other and slipping under each other. With a drum 11 rotated togetherwith a rotary shaft 10, a room 17 formed between the drum and a hopper 12 and the conduit 8 are formed such that they are gradually inclined between a horizontal stationary surface and a vertical drop surface. The solid tablets A are circumferentially slipped down along a sloped surface under gravity and through a centrifugal force. The tablets are vertically dropped along the drop surface under gravity, and are contained in the conduit 8 through an arranging room 17, and they are taken out to the outside from a notched part 34 formed positioned facing the stationary surface.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Analysis The present invention relates to a feeding device for solid preparations, and more specifically, solid preparations having a roughly elliptical cross-sectional shape tapered on both sides are transferred from a hopper to the circumferential surface of a rotating drum. The solid preparations are randomly supplied and stored in a plurality of solid preparation conduits formed on the outer peripheral surface of the rotating drum in a state in which they are lined up one by one in a predetermined direction, and the solid preparations are fed from each solid preparation conduit at a fixed position. This invention relates to a feeding device for solid preparations that can be taken out one by one.

BACKGROUND ART Conventionally, in this type of supply device, a conduit for a solid drug provided on the outer circumferential surface of a rotating drum is provided with protrusions spaced at a constant pitch in the circumferential direction on the outer circumferential surface of the rotating drum, and adjacent protrusions are connected to each other. A groove is provided in between for inserting, for example, two solid preparations aligned in a fixed direction, and the upper opening of said d4 is closed with a cover installed at a predetermined distance from the outer peripheral surface of the drum to form a tubular shape. There is. In this tubular solid drug conduit, the inner surface of the conduit and the outer surface of the solid drug at its maximum thickness are generally aligned so that the solid drug can pass smoothly and in an aligned manner during insertion into and removal from the conduit. A gap of 0.1 to 0.3 mm is provided between them. However, when the solid preparation 1 has an elliptical shape with both sides tapered when viewed in cross section as shown in FIG. 21, the solid preparation 1 passes through the conduit 2 while being inclined, and at this time,
Adjacent solid preparations 1 tend to ride on each other and sink into each other. In this case, a portion of the solid preparation 1 may come into pressure contact with the inner surface 2a of the conduit, causing a so-called wedge-like phenomenon, and the flow of the solid preparation 1 may be stopped. When this phenomenon occurs, the processing speed becomes slow and there is a risk that the solid preparation may be damaged within the canal. On the other hand, recently, for example, the testing speed of solid preparations has reached 1800 tablets/minute, so the appearance of supply devices capable of processing solid preparations at high speeds is rare in the pharmaceutical industry.

OBJECT OF THE INVENTION The present invention aims to solve the above-mentioned conventional problems, and provides a feeding device for solid preparations in which both sides are narrow in cross section.
The shape of the inner surface of the conduit for passing solid preparations provided on the outer circumferential surface of the rotating drum has been improved so that adjacent solid preparations come into contact with each other at an angle that prevents them from running over or slipping into each other, so that they are in a twisted state. Therefore, it is an object of the present invention to provide a novel feeding device that prevents the flow of solid preparations from stopping and enables high-speed processing.

Structure and operation of the invention That is, the present invention supplies a solid preparation whose cross section has a constant length and thickness and is tapered on both sides in the length direction from a hopper to the outer peripheral surface of a rotating drum. A feeding device for solid preparations that sequentially takes out solid preparations one by one while being aligned in a fixed direction through a conduit formed on the outer circumferential surface of the drum, wherein the solid preparations are protruded on the outer circumferential surface of the drum at approximately constant pitches in the circumferential direction. A groove is formed between adjacent protrusions into which two or more of the solid preparations are aligned and inserted in a certain direction, and a cover is arranged at intervals on the outer peripheral surface of the drum, and the cover A conduit with a roughly rectangular cross section for passing the solid preparation is provided by covering the above 1rη, and the cross section of the conduit is made to correspond to the cross section of the solid preparation to be inserted, and the longitudinal direction of the solid preparation is made to correspond to the cross section of the solid preparation to be inserted. The axial center is kept constant, and the angle of the horizontal axis of the cross section with respect to the perpendicular line perpendicular to the axial center is sequentially changed in the axial direction so that the inner surface of the conduit is twisted, so that adjacent solid preparations can ride on or crawl into each other. It is characterized by having a shape that does not cause.

More specifically, the present invention rotates the rotating drum together with the hopper as a unit, and the outer circumferential surface of the rotating drum is formed into a conical shape, and the axis of the conical shape is arranged with a predetermined angle of inclination, and The + of the solid drug is placed at the bottom of the outer circumferential surface of the drum.
A large number of protrusions are formed radially at a roughly constant pitch to form a hole for inserting a large number of solid preparations, and the hopper has a height slightly larger than the thickness of the solid preparation. At least a portion of the groove is placed on the outer circumferential surface of the drum, with a gap slightly larger than the thickness of the solid preparation, and in a state approximately parallel to the outer circumferential surface of the drum, the lower peripheral portion of the drum is placed on the outer circumferential surface of the drum. A cover is integrally formed to cover the drum, and the upper opening of the d1 drum is closed by the cover, and a tubular conduit having a horizontally long rectangular cross section and twisted in the axial length direction is provided. In addition to providing a means for taking out the solid preparation in the conduit to the outside at a certain position facing the
A means is provided that is removably connected to the drum and rotates the drum around its axis, and the means rotates the drum and hopper together, so that the solid preparation inserted into the hopper is delivered to the upper part of the outer circumferential surface of the drum. When inserted, the solid preparations are aligned in the thickness direction, and when inserted into the conduit from the upper part of the outer peripheral surface, they are aligned in the rlj direction, and the solid preparations are taken out one by one in a constant state by the above-mentioned removal means. It is characterized by the following.

EXAMPLES Hereinafter, the present invention will be described in detail with respect to examples shown in the drawings.

The feeding device of the present invention has a constant length, a constant thickness (where thickness < rl < length), and has a constant length and thickness (thickness < rl < length), and also has a constant length and a constant thickness toward both sides of the cross section (width direction cross section) and longitudinal section (length direction cross section). A large number of specific standardized solid preparations having a narrow, approximately elliptical shape are supplied at random and taken out one by one while being aligned in a fixed direction.

1 to 9 show a first embodiment of the present invention.

As shown in the figure, the solid preparation feeding device according to the present invention includes an inclined rotating shaft 10 driven by an electric motor B, a truncated conical conveying drum II detachably mounted on the rotating shaft 10, It consists of a cylindrical storage hopper 12 that is integrally fixed on the drum 11, and the storage hopper is provided with an inlet 13 for solid preparations and a storage space I4 in the hopper, and a storage space I4 for the drum 11 is provided at the bottom of the hopper 12. A cover 9 covering the outer circumferential surface at a predetermined interval is integrally formed, and a solid preparation storage room I7 is provided between the cover 9 and the upper outer circumferential surface of the drum II. A large number of conduits 8 each containing two solid preparations A between them.
are provided at a constant pitch in the circumferential direction, and a solid preparation removal portion 15 is provided at a predetermined position.

The drum II has a truncated conical shape, and the rotating shaft 10 is inserted into the insertion hole 18 provided in the shaft center, and the connecting pin 20 provided in the receiving flange 19 of the rotating shaft lO is inserted into the receiving hole 2 of the drum If.
1 and the magnet 22 provided on the flange 19 is attracted by the iron piece 23 attached to the drum 11, thereby causing the drum 11 to rotate together with the rotating shaft lO. The top surface of the drum 11 assembled in this manner and the tip of the rotating shaft IO are approximately on the same plane 1, and these constitute the sliding surface of the solid preparation A. As shown in the developed view of FIG. 4, the conical outer circumferential surface of the drum 11 has a number of protrusions 25 formed at a lower part thereof radially in the generatrix direction of the cone at a constant pitch. A groove 8 is formed in between, while the upper part is made flat to form a beveled surface. The above it"j I
The upper opening of G is closed by the cover 9 to form a tubular conduit 8 having a horizontally long rectangular cross section (cross section).

The height of the inner surface of the conduit 8 is such that the height h of the protrusion 25 is slightly larger than the maximum thickness of the solid preparation (for example, 01-0, 3
mm), and the length Q is an integral multiple of the length of the solid preparation A, twice in this example, and the distance S between the pair of protrusions is slightly larger than 1+ of the solid preparation (for example, OI
~0.3mm) length. The center r of the protrusion 11 and the groove 25 have a constant dimension, for example, 1 mm, and the conduits 8 are provided on the outer peripheral surface of the drum 11 at a substantially constant pitch p.

When the solid preparations A are inserted into the conduit 8 from the upper part and taken out from the lower part at a predetermined position as shown in FIG.
The inner surface of the conduit 8 is twisted as shown in FIG. 5 to prevent the conduit from penetrating. This is done by performing electrical discharge machining or round machining on the inner surface of the groove 16 and the inner surface of the cover 9 so that one side of the inner surface of the conduit 8 is convex and the other side is concave. That is, as shown in the figure, the groove pipe 8
Keeping the axis O in the longitudinal direction constant and without changing the cross-sectional shape, the angle α of the horizontal axis At the entrance side 8a, the angle is 90° (as shown in H), and as shown in (II), it is tilted at 45° from the center 8C in the longitudinal direction of the conduit 8, and is continuously changed in the length direction. From the center position toward the exit side 8b, the angle is changed continuously from 45 degrees to the original 90 degrees, and as shown in (III), it is the same as (1).

The solid preparation A is inserted into the conduit 8 with its width direction facing the protrusion 25 and its thickness facing the outer peripheral surface of the drum II, that is, the bottom surface of the groove 16, and the solid preparation A is placed at the position shown in FIG. 6 (1). At the position (■), the figure becomes the initial figure A', and at the position (■) it becomes the figure A'' tilted at 45 degrees, and at the position (■) it becomes the figure A'', which is the same as Ao. At this time, since each pitch S to the positions of postures A', A'', and A°'' is the same as the diameter of solid preparation A (conduit 8
(because the length of the solid drug is twice the diameter of the solid preparation), A
456 deviation between ' and A'', 45° between A'' and Δ''''
As a result, A' rides on A'', A'' rides on Δ'''', and it becomes impossible to crawl under. In this way, conduit 8
Two solid preparations are inserted into the 'rM 16 without twisting or digging in, and are stored side by side.

The drum 11 rotates to reach a predetermined position.
As shown in FIG. 9, each solid preparation A is moved and taken out without running over or falling into the container.

In order to prevent the solid preparation A from falling from the conduit 8, the lower ends of the protrusions 25 are continuously shifted from each other.
A pore 27 is provided in the connecting portion 26 of the device to allow dust and fine particles of the solid preparation to fall and be taken out.

The upper part of the outer peripheral surface of the drum 11 constituting the sliding surface has a vertical distance q larger than the length of the solid preparation A, so that the solid preparation can freely move in the circumferential direction on the sliding surface. Zuro.

The hopper 12 has a generally cylindrical shape, has an input port 13 for solid preparations on its upper surface, has a storage space 14 with a large volume inside, and has a truncated conical shape of the tram 11 from the lower end of the cylindrical portion 30. A conical cylindrical cover 9 similar to the above is integrally formed, the cover 9 covers the outer peripheral surface of the drum 11, and its lower end is placed on the upper surface of at least a portion of the protrusion 25 of the drum 11, Fix with mounting screw 29. Therefore, the lower end of the cover 9 of the hopper constitutes the upper surface of at least a portion of the MI6 to prevent the solid preparation from falling to the outside from the groove I6, while the cover 9 and the outer periphery of the drum 11 form the thickness of the solid preparation. They are arranged approximately parallel to each other with a slightly larger gap between them, and the solid preparations are housed between them so that they are aligned in the thickness direction and can freely move in the middle direction and length direction. One sorting room 17 is formed. A plurality of stirring blades 32 for stirring up solid preparations are provided at the lower part of the cylindrical portion 30 of the hopper 12.

Further, a guide plate 33 having a generally conical cylinder shape is provided at a position approximately connected to the tip of the cover 9 of the hopper 12 so as to cover the lower upper surface of the i6t l 6 that is not covered by the cover 9 of the hopper I2, and the above-mentioned A notch 34 is provided in a part of the guide plate 33, and an iM I 6 corresponding to the notch 34 is provided.
The solid preparation A stored under the notch 34 can be taken out to the outside. In addition, a vacuum ring 35 is provided below the guide plate 33 so that the vacuum inlet ibi3e of the vacuum ring 35 is electrically connected to the pore 27 of the protrusion 25 to remove dust and fine powder in the 11+% IG. I try to suck it out and take it out.

The hopper 12 is integrally fixed on substantially the same axis as the drum 11, and is detachably attached to the rotating shaft 10 on substantially the same axis as the rotating shaft IO. Since the rotation axis IO is arranged with a certain m degree of inclination in the vertical direction, the drum! The outer circumferential surface 24 of (2) is also arranged in an inclined state. For example, when the conical angle of the outer circumferential surface 24 forming the truncated cone of drum II is 90 degrees, the end surface 24a at the lower right end is disposed at an angle as shown in FIG. While it is located approximately vertically to form a falling surface, the end surface 24b at the upper left end is located approximately horizontally to form a stationary surface, and the outer circumferential surface 24c between them is inclined to form an inclined surface. . Therefore, when the drum 11 is rotated together with the rotation axis IO, the room 17 and the conduit 8 formed between the hopper I2 and the hopper I2 are sequentially tilted between the horizontal stationary surface and the vertical falling surface, as shown in FIG. The solid preparation A slides circumferentially on the inclined surface due to its gravity and centrifugal force, falls vertically on the falling surface due to its gravity, and is stored in the conduit 8 from the organizing room 17. Thereafter, it is taken out to the outside through a notch 34 provided corresponding to the stationary surface. That is, a large number of solid preparations A randomly supplied from the input port 13 of the hopper 2 to the space 14 are as follows:
As the sludge slides down the sloped top surface 37 of the drum II, it is guided from the cylindrical portion 30 of the hopper 12 to the cover 9 of the conical cylindrical portion, and the thickness of the sludge is deposited in the room 17 above the outer peripheral surface 24 of the drum 11. The conduit 8 enters the conduit 8 while being aligned in the direction, and freely moves in the circumferential direction while sliding down the inclined surface 24b, so that each conduit 8 is aligned in the middle direction within each conduit 8 without creating a bridge. It is stored until it reaches the lowest end of the conduit 8 on the falling surface, and in that state it comes to the stationary surface and is taken out from the notch 34.

The solid preparation taken out from the notch 7m < 3.1 to the outside
The images are transferred one by one, and their quality is inspected by sequential inspection to camera I]. The inspection drum and the supply drum are rotated synchronously via interlocking members E such as pulleys, belts, and bevel gears.

The inspection tram C has a notch 3 of the supply drum 11 at the tip of a suction nozzle F provided at the same pitch as the conduit 8 of the supply drum II.
The solid preparations taken out from 4 are adsorbed one by one, and the receiver is taken out using a camera D installed at a fixed position, as is well known.
The products are inspected and sorted into non-defective products and defective products.

The present invention is not limited to the above embodiments, and various modifications can be made.

FIG. 10 shows a modification of the conduit 8, in which the first
As shown in Figure 1, the entrance side 8'a of the conduit 8° has the horizontal axis The angle is continuously changed in the length direction so that the angle is 0° on the side 8''b.As in the above embodiment, the shape and offset are changed at the entry side position (1) and the center position (II). The posture of the solid preparation A is shifted by 45 degrees, and the posture toward the solid preparation is also shifted by 45 degrees between the central position (+lI) and the exit position (III), and the adjacent solid preparation A
It is impossible for the two to run over each other or crawl under each other. In this way, the conduit 8 is formed with a twist in the length direction,
The inner surface may be formed into a curved surface such that 2 g of adjacent solid preparations A collide with each other at an angle of 30° to 90°, preferably 45° to 90°, so that they cannot ride on or sink into each other.

The solid preparations A used in the feeding device of the present invention include tablets A1 and A2 as shown in FIG. 14 and FIG. Solid formulations are used. At this time, it is natural to change the shape of the conduit 8 and the dimensions of the conduit 8 and the organizing room 17 depending on the shape of the solid preparation to be supplied. A large number of units 39 of drums 11 and hoppers 12 having conduits 8 and rooms 17 of various shapes and sizes are prepared, and a specific unit corresponding to the unit is attached to a rotating shaft and used for supplying a specific solid preparation. Then, it can be used for various purposes.

FIG. 16 shows that the drum 11 is formed into a truncated conical shape, the flange 19 is fixed to the rotating shaft 10 with the screw 38, and the rotating shaft lO and the flange 19 are fitted into the recess 40 of the drum 11, as in the previous embodiment. In addition, stirring blades 41 for stirring are provided on the top surface 37 of the drum. In FIG. 17, the drum 11° is formed into a conical shape of 37°, and the hopper 12 is formed into a cylindrical shape similar to the embodiment shown in FIG.

In FIG. 18, the drum 11' is formed in the shape of a truncated cone, and its top surface 37 is formed into a spherical hill 37''. In FIG. 19, the drum 11''' is formed in the shape of a truncated pyramid, and the hopper 12 is The lower end of the "°" is formed into a pyramidal cylinder shape similar to the truncated pyramid shape of the drum.

In FIG. 20, the drum 11 is formed into a truncated conical shape as in FIG. The second hopper 12b is provided at a fixed position as shown in FIG. All of these modifications can perform the same function as in FIG. 1. In addition, in the embodiment shown in FIG. 19, the tram If''' and the hopper
If the solid preparation is rotated intermittently by 2'', the solid preparation can be easily taken out from the notch.

Effects of the Invention As detailed in the above embodiments, the present invention has a fixed length and Ij
A large number of solid preparations having a thickness and a shape that is tapered on both sides when viewed from the cross section are randomly fed into the 71 nipper, and the solid preparations are placed at a certain position on the outer periphery of a drum that is rotated integrally with the hopper. In a feeding device for solid preparations that is sequentially taken out from a drum in a uniformly aligned state, the conduit that is inserted into the outer circumferential surface of the drum is formed in a shape that does not cause running over or slipping between adjacent solid preparations. , it is possible to prevent the flow of the solid preparation from stopping within the conduit.

In addition, in this feeding device, when the solid preparations inserted into the hopper are inserted into the upper part of the outer peripheral surface of the drum, they are aligned in the thickness direction, and when they are inserted into the conduit from the upper part of the outer peripheral surface, the solid preparations are It is composed of a simple unit consisting of a drum and a hopper, which are arranged in the same direction, and can be taken out one by one in a constant state by the taking-out means, and which is removably attached to a rotating shaft. In addition to being easy to manufacture and assemble, the unit can be removed from the rotating shaft for easy cleaning and repair. However, the large number of solid preparations supplied to the hopper are all inserted into the insertion section with a supply probability close to 100% without causing troubles such as bulges or remaining in the hopper, and the ejection means reliably It can be taken out sequentially and supply processing can be performed at a higher speed than in the past. Since the solid preparations are inserted into the insertion section using their own weight or centrifugal force inside the co-rotating drum and the 71 nipper, the solid preparations are smoothly inserted one by one in a constant state without being scratched. It is something that can be taken out, and its practical use has great advantages.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the entire apparatus according to the present invention, and FIG.
The figure is a sectional view of the main part showing the first embodiment, Figure 3 is a perspective view explaining the operation, Figure 4 is a developed view of the outer peripheral surface of the drum in Figure 2, and Figure 5 is the conduit of the first embodiment. A perspective view showing the shape of the sixth
The figures show the posture of the solid preparation in each part of the conduit shown in FIG. Figure 7 (IXI
IXIII) is a drawing of the solid preparation in Fig. 6 (I) (b) (■) seen from the A direction in Fig. 5, Fig. 8 is a drawing of the solid preparation in the conduit seen from the Chunichi direction in Fig. 5, FIG. 9 is a cross-sectional view showing the state of movement of the solid preparation in the conduit, FIG. 10 is a perspective view showing another modification of the conduit, and FIG. 11 shows the posture of the solid preparation in each part of the conduit shown in FIG. (+) is a sectional view taken along the I-1 line,
(II) is a cross-sectional view on the H-■ line, (III) is a [1l-11
1I line sectional view, Figure 12 (1) (lI) ([[1] is a drawing of the solid preparation of Figure 11 (IXI [XIII) seen from eight directions in Figure 1O, Figure 13 is a view of the inside of the conduit Solid preparations are the first
Figure 0 is a drawing viewed from the central day direction, Figure 1 = Figure 1 and Figure 15 respectively show the shape of the solid preparation. 1) is a plan view, (II)
is a front view, FIGS. 16 to 18, 1 and 20 are sectional views showing a modification of FIG. 1, FIG. 19 is a perspective view showing a modification of FIG. 1, and FIG. The figure is a schematic cross-sectional view showing the problems of the conventional technology. 8... Conduit, 9... Cover, 10...
·Axis of rotation,! ! ...Drum, I2...Hopper, 1
3... Input port, 15... Output section, I6... H4, 17
...Room, 34...Notch, A...Solid preparation,
B...Electric motor patent applicant Takeda Pharmaceutical Co., Ltd. Haka1
Renowned patent attorney Aoyama Aoyama and 2 other people at 119
Prisoner Figure 21

Claims (3)

[Claims] (1) Solid preparations with a constant length, width, and thickness whose cross section is tapered on both sides in the longitudinal direction are supplied from a hopper to the outer circumferential surface of a rotating drum, and a large number of conduits are formed on the outer circumferential surface of the rotating drum. A feeding device for solid preparations that sequentially takes out the solid preparations one by one in a state in which they are aligned in a certain direction through the drum, the drum having protrusions provided on the outer circumferential surface of the drum at approximately constant pitches in the circumferential direction; Covers are arranged at intervals on the outer circumferential surface of the drum, and the covers cover the grooves between the protrusions, so that two or more solid preparations are inserted between each protrusion in a predetermined direction, and at a constant rate. A conduit for the solid preparation with a roughly rectangular cross section to be taken out at a certain position is provided, and the cross section of the conduit is made to correspond to the cross section of the solid preparation to be inserted, and the axis in the longitudinal direction of the solid preparation is kept constant. At the same time, the angle of the horizontal axis of the cross section is continuously changed in the axial direction with respect to the perpendicular line perpendicular to the axis, so that the inner surface of the conduit is twisted, so that adjacent solid preparations do not run over or crawl into each other. A feeding device for a solid drug, characterized in that it has a shape that does not form. (2) In the device according to claim (1), the outer circumferential surface of the drum is formed into a conical shape, and the axis of the conical shape is inclined at a certain angle, and A large number of protrusions of a certain height are arranged radially at a roughly constant pitch to form a number of grooves for inserting a solid preparation, each having a width slightly larger than the width of the solid preparation and a height slightly larger than the thickness of the solid preparation. Further, at least one of the grooves is formed in the lower peripheral part of the hopper from the upper part of the outer circumferential surface of the drum in a state that is approximately parallel to the outer circumferential surface of the drum with a gap slightly larger than the thickness of the solid preparation on the outer circumferential surface of the drum. A cover is provided that is integrally formed with the drum so as to partially cover the drum, and a means is provided at a certain position facing the drum to take out the solid preparation in the conduit to the outside. The supply of solid preparations is characterized in that a means for rotationally driving the drum and the hopper is provided, and the drum and hopper are integrally rotated by the means, so that the solid preparations can be taken out one by one in a constant state by the above-mentioned taking-out means. Device. (3) The apparatus according to claim (1), wherein the length of the conduit formed on the outer peripheral surface of the drum is set to an integral multiple of the length of the solid preparation. .