JPS6039065A - Solid matter surface polishing mechanism - Google Patents

Abstract

PURPOSE:To carry out polishing and conveying simultaneously by providing a conveying body consisting of a rotary brush, inside a cylinder which consists of a smoothing cylinder and a porous cylinder. CONSTITUTION:A rotary brush 12 is provided inside a cylindrical body 1 which consists of a smoothing cylinder 2 and a porous cylinder 4 provided on its rear end. Solid matter such as capsules, etc. and a smoothing agent are thrown into a thrown-in hopper 6, the solid matter is polished while the solid matter and the smoothing agent are being conveyed, and, when they reached the polous cylinder 4 part of the cylinder body 1, the smoothing agent is discharged from the ports on the cylinder wall of the polous cylinder 4 while the solid matter is discharged from the outlet 7 passing through the polous cylinder 4. Thereby, a device with good polishing efficiency can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a polishing mechanism for the surface of a solid object, and particularly to a polishing mechanism suitable for polishing the surface of a solid object such as a tablet or a capsule.

[Background of the invention]

In general, pharmaceutical tablets and capsules are press-molded using a tablet machine or filled using a filling machine, and then subjected to a polishing machine to remove dust and polish. Providing lubricity to the surface of a tablet or capsule results in a lack of overall smoothness, which can lead to missing tablets, especially when the tablet or capsule is transported by chute. Conventionally,
As a method of imparting lubricity to the surfaces of tablets and capsules as described above, a powdered lubricant such as magnesium stearate is mixed into the tablets or capsules and agitated using a rotary polisher to remove the lubricant. A method is used in which a free fatty acid is attached to the surface of a solid substance to impart lubricity, and the lubricant is then separated from the tablet or capsule. However, in a lot-type polisher, tablets or capsules and lubricant are put into the polisher one by one, and when the surface of the tablet or capsule becomes smooth, the tablet or capsule is taken out of the polisher and the lubricant is added to the polisher. and tablets or capsules must be separated. Therefore, it takes time to polish the surface of tablets or capsules, and this has been an obstacle to full automation from manufacturing to packaging of tablets or capsules.

Furthermore, since a dust collector is used to separate the tablets or capsules from the lubricant, there is a problem in that a large amount of the lubricant flows into the dust collector, significantly impairing the performance of the dust collector.

[Purpose of the invention]

The present invention has been made in view of two points, and an object of the present invention is to provide a solid object polishing mechanism with good polishing efficiency that continuously polishes solid objects such as tablets or capsules while conveying them. do.

[Summary of the invention]

In order to achieve two objects, the present invention provides a cylindrical body consisting of a cylindrical smooth tube and a cylindrical perforated tube fixed to the rear end of the smooth tube and having a large number of holes in the tube wall. It has a two-part input hopper at the front end, a discharge port at the bottom of the rear end, and a recovery hopper at the bottom of the perforated cylinder. A rotary brush is rotatably installed inside the cylinder, and tablets, capsules, etc. A solid substance and a lubricant such as magnesium stearate powder are introduced, and the solid substance and lubricant are mixed and conveyed inside the cylinder using a rotating brush, and the surface of the solid substance is polished to remove the solid substance and lubricant. When the lubricant reaches the perforated part of the cylinder, it falls into the collection hopper through the holes in the cylinder wall of the perforated cylinder, and the solids pass through the perforated cylinder and are discharged from the outlet at the rear end of the cylinder, forming tablets or other solids. The surface of solid objects such as capsules is continuously polished to give it smoothness.

[Embodiments of the invention]

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view showing the structure of a solid material polishing mechanism according to the present invention. Reference numeral 1 denotes a cylindrical body, and the cylindrical body 1 includes a cylindrical smooth tube 2 and a cylindrical porous tube 4 fixed to the rear end of the smooth tube 2 by a flange 3 and having a large number of holes in the tube wall. It becomes more.

An outer cylinder 5 is fixed to the side surface of the flange 3 with a gap provided between the outer periphery of the perforated cylinder 4 and the outer peripheral surface of the perforated cylinder 4. An input hopper 6 is provided at the upper front end of the cylinder body 1 to input solid materials such as tablets or capsules and a lubricant such as magnesium stearate powder, and a charging hopper 6 is provided at the lower rear end of the cylinder body 1 for charging solid materials such as tablets or capsules and lubricants such as magnesium stearate powder. A discharge lower for carrying out solid matter is provided, and a recovery hopper 8 for recovering the lubricant is further provided at the lower part of the porous tube 4 of the cylinder 1.

Inside the cylindrical body 1, both ends of the shaft member 10 of the rotating brush 12 have a structure in which brush fibers 11 are implanted radially on a rod-shaped shaft member 10. freely supported.

FIG. 2 is a partially cutaway front view showing the cylindrical body 1. FIG. As shown in the figure, a porous cylinder 4 having a plurality of holes 4a in the cylinder wall is integrally fixed behind the cylindrical smooth cylinder 2 by a flange 3. The diameter of the hole 4a provided in the wall of the lubricating cylinder 4 is made sufficiently smaller than the size of the solid object such as a tablet or capsule to be polished. An outer cylinder 5 is fixed to the side surface of the flange 3 with a gap d provided between the outer periphery of the lubricant cylinder 4 and the outer peripheral surface of the lubricant cylinder 4.

3 and 4 are front views showing the rotating brush 12, respectively. As shown in FIG. 3, the rotating brush 12 has a structure in which brush fibers 11 made of nylon or the like are helically implanted radially on a shaft member 10, or as shown in FIG. It has a structure in which brush fibers 11 are provided radially in the ridges. The diameter of the rotating brush 12 is made approximately equal to the inner diameter of the cylindrical body 1 so that the tips of the brush fibers 11 come into contact with the inner surface of the cylindrical body 1 .

In the polishing mechanism having the above structure, the rotary brush 12 is rotated by a drive device 14 provided at one end of the shaft member 0, and then the solids such as tablets or capsules to be polished are placed in the input hopper 6, and the magnesium stearate. When the lubricant powder is charged, the solids and the lubricant are conveyed from the outlet of the input hopper 6 along the inner surface of the cylinder 1 toward the rear end.

At this time, the lubricant and solids are mixed and stirred, so
The free fatty acids of the lubricant adhere to the surface of the solid material, giving it lubricity.

When the mixture of solids and lubricant enters the porous body 4, since the solids are larger in diameter than the holes 4a provided in the cylinder wall, the solids are transported as they are inside the porous cylinder 4 toward the rear end. However, the lubricant powder passes through the hole 4a and is released into the gap d formed between the inner peripheral surface of the outer cylinder 5 and the outer peripheral surface of the inner cylinder 4. At this time, brush fiber 1
1 acts to peel off the lubricant powder from the surface of the solid object. The lubricant powder released into the gap d enters the recovery hopper 8, and the solid matter is discharged from the outlet at the lower rear end of the porous cylinder 4.

FIG. 5 is a diagram showing a powder-removal polishing and lubricating device for the surface of a solid object using the above-mentioned polishing mechanism. The polishing mechanism is installed on a pedestal 15 whose upper surface is inclined so that the discharge lower is located below. Additionally, a conveyor 16.1 is mounted on the pedestal 15 to return the lubricant collected by the collection hopper 8 to the input hopper 6.
7 is provided.

A dust remover 18 is arranged at the discharge lower of the polishing mechanism to remove powder such as lubricant powder remaining on the surface of the polished solid object, and a dust collector 19 collects the powder removed by the dust remover.
is placed. The conveyor 16 and the conveyor 17 are conveyors having exactly the same mechanism. That is, inside the conveyance pipe 20,
A helical coil 21 with a smooth surface that lightly contacts the inner wall over its entire length is installed inside, and one end of the helical coil 21 is connected to the shaft of a motor 22 so as to be rotated by the motor 22. The conveyor 16 has one end connected to the discharge port of the collection hopper 8, and a damper 23 is provided at the connection part. A take-out port 24 is provided at the other end of the conveyor 16, and the tip of the take-out port 24 enters a hopper 25. The conveyor 17 has an intake port connected to the discharge port of the hopper 25, and the other end connected to the input hopper 6.

The powder removing machine 18 includes a perforated cylinder 29 provided inside an outer cylinder 28 having an intake port 26 at one end and an outlet 27 at the other end.
A net 30 is disposed inside the net 9, and a rotating brush having a shaft 31 as a rotation axis is rotatably provided in the center so as to be rotated by a drive device. Further, a powder receiver 33 is provided on the lower surface of the outer cylinder 28, and is connected to the dust collector 19 via a hose 34. The dust collector 19 has a filter 75 loaded therein, and a fan 37 is rotated by a drive device 36 to suck powder from the powder collecting container 33.

In the powder removal polishing and lubricating device as described above, the tablets 38 sent from, for example, a tablet press are stored in the input hopper 6, and as described above, while being transported inside the cylinder 1, the tablets 38 are smoothed on the surface. It is given a lot of water and is discharged from the discharge lower. The tablets 38 discharged from the discharge lower have residual powder adhering to their surfaces removed by the powder remover 18, and are turned into beautiful glossy tablets and sent from the discharge port 27 to, for example, a packaging process. On the other hand, the lubricant put into the collection hopper 8 is once put into the hopper 25 by the transport mechanism 16, and further transported to the input hopper 6 by the transport machine 17, where it is recycled and used.

〔Effect of the invention〕

As explained above, the solid object surface polishing mechanism according to the present invention mixes and stirs the solid object and the lubricant while conveying it,
Since it imparts lubricity to the surface of solid objects, it has an extremely excellent effect of allowing solid objects to be polished continuously and efficiently.

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[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the structure of the solid material surface polishing mechanism according to the present invention, FIG. 2 is a partially cutaway front view of the cylinder, and FIG.
FIG. 4 is a front view of the rotating brush, and FIG. 5 is a diagram showing the structure of a dust removal, polishing, and lubricating device using the polishing mechanism according to the present invention. In the figure, ■... Cylinder, 2... Smooth tube, 3... Flange, 4... Perforated tube, 5... Outer tube, 6... Input hopper, 7... Discharge Exit, 8... Collection hopper, 1o.
... Shaft member, 11... Brush fiber, 12... Rotating brush, 13... Bearing, 14... Drive device. Applicant Nippon Kosan Co., Ltd. Agent Patent Attorney Takashi Kumagai

Claims (1)

[Claims] It has a cylindrical body consisting of a cylindrical smooth cylinder and a cylindrical porous cylinder with a large number of holes in the cylinder wall fixed to the rear end of the smooth cylinder,
An input hopper is provided at the top of the front end of the cylinder, an outlet is provided at the bottom of the rear end, and a collection hopper is provided at the bottom of the perforated cylinder, and an outer cylinder is provided around the outer circumference of the perforated cylinder to enclose the perforated cylinder. A rotary brush having a structure in which brush fibers are implanted radially on the shaft member so that the tips thereof reach the inner surface of the cylinder is rotatably provided, and the solid material to be polished and a powdered lubricant are mixed into the input hopper. , The solid material to be polished and the lubricant are mixed and conveyed in the cylinder by the rotating brush, the lubricant and the solid material are separated in the porous cylinder part, and the lubricant is transferred to the collection hopper. , a solid material surface polishing mechanism characterized in that the solid material is sent to a discharge port.