JPH04352601A - Device for dividing powder in rotary distributor - Google Patents

Abstract

PURPOSE:To make it possible to precisely divide powder into powder of required quantity from an annular groove on a rotary table of a rotary distributor. CONSTITUTION:A dividing mechanism 21 for dividing powder coming into an annular groove 11 formed on a rotary table 10 is of the construction wherein a rotary plate 22 for intercepting powder and a scraping plate 23 are rotationally driven independently on a rotation axis 24. Consequently, when the first package of powder is divided, dividing operation is performed while the rotary plate is made stationary, so that the quantity of powder of a final package is prevented from decreasing to enhance dividing accuracy.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a dividing device for a rotary packaging machine which continuously divides and packages powdered medicine into required amounts.

0002

[Prior Art] A method for dividing and packaging powder and granular materials such as pharmaceuticals into required amounts without using a distribution mass is to use a ring-shaped system installed on a rotary table whose rotation speed can be set. After distributing and supplying the divided total amount of powder and granules almost evenly to the concave grooves, the rotary plate and the scraping plate were integrated in a direction that crossed the concave grooves of the rotary table. When a part of the material is fitted and rotated, the rotating plate divides the powder and granular material in the groove, and the scraping blade scrapes the part into the chute outside the groove.
There is a method that takes out a package of powder and granules and packages them separately. As for this type of system,
It is known from Publication No. 598.

[0003] Furthermore, when scraping a required amount of powder or granular material from a rotary table with concave grooves, the circumferential speed of the rotary scraping plate and the rotational speed of the rotary table must be adjusted so that there is no variation in the amount of powder to be scraped out. JP-A-2-127201 discloses a dividing means for controlling .

[0004] Furthermore, Japanese Patent Application Laid-Open No. 2-11 is a dividing means for cutting out a predetermined amount of powder by using a plurality of rotary scraping plates that rotate in grooves on a rotary table.
27202, Japanese Patent Application Laid-Open No. 2-127204, etc.

[0005]

[Problems to be Solved by the Invention] In all of the above-mentioned conventional techniques, the scraping plate is integrally attached to the rotary plate that rotates on the groove of the rotary table. In the method disclosed in the publication, the scraping operation is performed while keeping the rotational speed of the rotary plate constant, and as a result, when the amount of powder and granular material handled is relatively large, a large error occurs in the amount of division. is unavoidable.

[0006] Furthermore, in the method disclosed in JP-A-2-127201, the rotational speed of a rotary table and the rotational speed of a rotary plate provided with a scraping plate are made variable according to the amount of division. Therefore, the former (Tokuko 52-2
The error in the amount of division is smaller than that disclosed in Japanese Patent No. 2598). However, since the rotary plate and the scraping plate are integrated, when the powder to be processed is first divided and cut out with the powder to be processed being distributed and supplied in a circular manner to the concave groove of the rotary table, the powder piled up in a circular shape is removed. As the rotary plate that cuts into the granules rotates together with the scraping plate, the granules adhere to both sides of the rotary plate and are taken out. The volume of the package will be reduced. Therefore, it is inevitable that a highly accurate dividing operation becomes difficult.

The present invention solves these conventional problems and divides the required amount of powder and granules supplied into the annular groove on the rotary table into one package from the initial division to the final division. It is an object of the present invention to provide a dividing device for powder and granular materials in a rotary packaging machine which can divide particles evenly without causing an error in quantity.

[0008]

[Means for Solving the Problems] The present invention provides a method for cutting out powder and granular material received and distributed in an annular groove formed on a rotary table by rotating the powder and granular material around the center of curvature of the groove. In a powder/grain material dividing device of a rotary packaging machine which is now divided by a mechanism, the powder/grain cutting mechanism has a rotary plate for damming the powder/grain material, and a scraper coaxially attached to one side of the rotary plate. This is a powder/grain material dividing device in a rotary packaging machine, characterized in that a removal plate is provided so as to be driven to rotate separately.

In the granular material dividing device of the present invention, the rotary plate and the scraping plate are disposed on the same axis at the tip of the support arm protruding from the rotation center of the rotary table in the outer circumferential direction,
The rotating plate is integrated with a transmission wheel supported via a bearing on the mounting shaft of the scraping plate, and the rotating plate and the scraping plate may be configured to be rotationally driven by separate motors. preferable.

0010

[Operation] In the dividing device of the present invention having such a structure, after the required amount of powder is distributed and supplied onto the annular groove of the rotary table, the powder cutting mechanism is lowered onto the annular groove to perform dividing cutting. When scraping off the first sachet amount, the rotary plate is held stationary, and only the scraping plate scrapes off the one sachet amount and scrapes (cuts out) out of the annular groove. In this way, when the powder and granules distributed and supplied in an annular manner on the annular groove are first scraped off for one package, the final portion is placed on the side opposite to the side that is in contact with the rotary plate and is scraped off. The powder and granular material in the package is kept stationary and is cut out by the amount of one package without adhering to the rotary plate and being carried out to the supply chute to the packaging section.

Thereafter, the scraping plate and the rotary plate are synchronized, and each package is scraped out into the supply chute to the packaging section.
When the final remaining amount is scraped off after being divided into portions and cut out, the rotary plate and the scraping plate are rotated multiple times to send the total amount to the packaging section.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS The dividing apparatus of the present invention will be described in detail below with reference to the drawings of one embodiment.

FIG. 1 is a plan view of a rotary packaging machine having two left and right rotary tables 10, 10' and equipped with a dividing device 20 of the present invention. Each rotary table 10, 10' provided in this rotary packaging machine is provided with an annular groove 11, and a powder cutting mechanism 21 is positioned at a predetermined position with respect to each annular groove 11. is arranged so that it intersects with the rotating orbit, and a part of it is inserted. A supply chute 45 connected to a packaging mechanism (not shown) is disposed below between the rotary tables 10 and 10' adjacent to each other in the arrangement portion of the powder cutting mechanism 21. In addition, a feeder 4 as a powder supply mechanism 40 is provided at a position in front of both the left and right rotary tables 10, 10'.
1 and a supply hopper 42 are provided.

As shown in FIGS. 2 and 3, the powder cutting mechanism 21 has a shaft 16 attached to a drive part support frame 15 that is erected and supported on the machine body within the openwork hole 12 at the center of the rotary table 10. At the tip of the supported support arm 25, there is a rotary plate 22 that rotates around the center of curvature of the annular groove 11 provided on the rotary table 10, and the rotary plate 22 is provided along the same axis as the rotary plate 22 and is rotatable. and a scraping plate 23 are supported on a rotating shaft 24 so as to be driven separately.

That is, the rotating plate 22 is integrally supported via a mounting piece 22' by a transmission wheel 26 which is rotatably supported on the rotating shaft 24 via a bearing 26'. The scraping plate 23 is removable from the boss 23' directly fixed to the rotating shaft 24 with a rotation radius that matches the outer diameter of the rotating plate 22, as shown in FIG. It is provided at an angle that provides a predetermined scooping angle. In the figure, reference numeral 27 is a cover for the scraping plate, and 28 is a fixing cap.

The rotary plate 22 and the scraping plate 23 are driven by a support arm 25 at the drive section support frame 15.
A drive wheel 31 for driving the rotary plate 22 is attached to the drive shaft 16 that also serves as a support for the drive shaft 16, and a drive wheel 31 for driving the scraping plate 23
2 is supported on the drive shaft 16 via bearings 32', 32', and each drive wheel 31, 32 is driven by a worm gear mechanism 35, 35' by a single motor 34, 34' (for example, a pulse motor). Thus, the transmission wheel 26 and drive wheel 31 of the rotary plate 22, and the transmission wheel 29 and drive wheel 34 of the scraping plate, are driven by being wound with belts 36 and 36', respectively. The belts 36, 36' used here are timing belts (toothed belts), and each of the drive wheels 31, 32 and the transmission wheels 26, 29 are gears that mesh with the timing belt.

The support arm 25 of the powder cutting mechanism 21 is engaged with a cam 37 at its base end which is separately driven and operated and a cam follower 37' attached to the end of the support arm 25. When the division cutting operation is completed, it is lifted upward from the annular groove 11 of the rotary table 10, and is kept stationary in the lifted position until the next division cutting operation. In the figure, reference numeral 13 denotes a guide roller that rotatably supports the rotary table 10, 14 a support ring attached to the rotary table 10, and 14' a support guide protrusion provided on the inner periphery of the support ring 14.

The dividing device 20 of the present invention configured as described above
When in use, when the support arm 25 of the powder cutting mechanism 21 is raised, the rotary table 1
Rotating plate 22 and scraping plate 23 from the annular groove 11 on 0
is lifted upward (see FIG. 4(a)), and in this state, the powder supply mechanism 4 is placed on the rotating rotary table 10.
A required amount of powder A is fed from the feeder 41 of 0 to the annular groove 1.
1 is distributed and supplied.

After the supply of the powder A to the annular groove 11 of the rotary table 10 is completed, the rotary table 10 is rotated at a speed corresponding to the number of divisions. At the same time, the support arm 25 of the cutout mechanism 21 is lowered, as shown in FIG. 4(b).
As shown in , the rotary plate 22 is advanced into the annular groove 11, and the scraping plate 23 is rotated at a predetermined speed. At the time of cutting out the powder or granular material at the very beginning, the drive of the rotary plate 22 is stopped, and only the scraping plate 23 is rotated, as shown in FIG.
c) As shown in , the powder A dammed up in the annular groove 11 by the rotary plate 22 is cut out and sent to the supply chute 45 to the packaging mechanism.

[0020] By doing this, the amount of the granular material cut out from the first package is only the amount scraped by the scraping plate 23, and no granular material adhering to the rotary plate 22 is carried out.

From the second package onwards, the scraping plate 23 and rotating plate 22 are rotated in synchrony. In this state, the back side of the rotary plate 22 (the side where the scraping plate 22 is not arranged) has already been taken out of the first package of powder and granules from above the annular groove 11 and is blank, so the rotary plate 22 is blank. Even if the material dammed up by the scraping plate 22 is cut into the supply chute 45 by the scraping plate 23, and the powder or granular material adheres to the rotary plate 22 and is taken out, it is only on the scraping side, and there is no excessive taking out.

The powder and granular material supplied into the supply chute 45 is received in one compartment of a continuous packaging bag (not shown) located directly below the supply chute 45, and is packaged as one package by a packaging mechanism by well-known means. Ru. Thereafter, the pieces are sequentially divided into pieces corresponding to the amount cut out by the scraping plate 23 from the annular groove 11 of the rotary table 10 and packaged.

Eventually, the rotary table 10 rotates to the required rotation angle and reaches the final dividing position, and the rotary plate 22 and scraping plate 23 are rotated multiple times in synchronization to remove the remaining portion on the annular groove 11. All of it is scraped off and fed into the packaging bag via the supply chute 45.

[0024] When the dividing supply operation for the entire amount of sachets is completed, the powder cutting mechanism 21 is raised and retracted, and the brush wheel of the cleaning mechanism 50 (see FIG. 1) is brought into contact with the annular groove 11 instead. Then, the surface of the annular groove 11 is cleaned. At the same time, the rotating plate 22 and the scraping plate 23 are rotated, and a cleaning tool (not shown) attached to the supporting arm 25 is attached to the rotating plate 22.
2 and the scraping plate 23 to clean and remove adhering powder and granules to prevent the previously treated powder and granules from being mixed in during the next operation. Note that the cleaning mechanism 50 is raised after the cleaning operation to avoid any trouble.

[0025] The above explanation has been about the powder/grain material dividing operation using one rotary table 10, but in a packaging machine equipped with two rotary tables 10, 10' as shown in FIG. This is done in the same way for each rotary table 10, 10', and may be done simultaneously or separately depending on the state of the packaging operation.

[0026]

Effects of the Invention According to the present invention, when the powder and granular material that is leveled and supplied to the annular groove on the rotary table is divided and sent to the packaging mechanism, only the set amount is cut out of the first package. Therefore, after the required number of divisions have been taken out, it is possible to prevent the final packaging from becoming too small, and it is possible to perform packaging with high precision.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of a rotary packaging machine having two rotary tables and equipped with a powder/grain material dividing device of the present invention.

FIG. 2 is an enlarged plan cross-sectional view of main parts.

FIG. 3 is a view taken along arrow III-III in FIG. 2;

FIG. 4 is a diagram showing an aspect of a scraping and dividing operation,
(a) shows the state in which the powder is supplied to the annular groove of the rotary table, (b) shows the state in which the rotary plate of the scraping mechanism has entered the annular groove, and (c) shows the state in which the powder is supplied by the scraping plate. This figure shows a state in which powder and granular material is cut out from the annular groove.

[Explanation of symbols]

10, 10' rotary table 11 annular groove 12 openwork hole 15 in the center of the rotary table
Drive part support arm 16 Drive shaft 20 Powder dividing device 21 Powder cutting mechanism 22
Rotating plate 23 Scraping plate 24 Rotating shaft 25 Support arm 26 Rotating plate transmission wheel 29 Scraping plate transmission wheel 31, 32 Drive wheel 34, 34' Motor 35, 35' Worm gear mechanism 36, 36' Belt 37 Cam 37 ' Cam follower 40 Powder supply mechanism 41 Feeder 42 Supply hopper 45 Supply chute A Powder

Claims (2)

[Claims] 1. Powder and granular material received and distributed in an annular groove formed on a rotary table is divided by a granular material cutting mechanism that rotates around the center of curvature of the groove. In a powder dividing device of a rotary packaging machine, a rotating plate for damming the powder of the powder cutting mechanism and a scraping plate coaxially attached to one side of the rotating plate are rotated separately. A powder/grain material dividing device in a rotary packaging machine, characterized in that it is provided to be driven. 2. The rotary plate and the scraping plate are disposed on the same axis at the tip of a support arm protruding from the rotation center of the rotary table in the outer circumferential direction, and the rotary plate has a bearing on the mounting shaft of the scraping plate. The powder and granular material in a rotary packaging machine according to claim 1, wherein the powder and granular material is integrated with a transmission wheel supported through the rotary packaging machine, and the rotary plate and the scraping plate are configured to be rotationally driven by separate motors. Splitting device.