JPH0246274B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) This invention is a rotary cored tablet for producing cored tablets for pharmaceuticals, etc., which can determine the presence or absence of cored tablets and completely eliminate non-core tablets. It concerns tablet machines.

(Prior art) Generally, in order to manufacture dry-coated tablets used for pharmaceuticals, etc., a first powder is placed in a number of dies arranged on a rotary disk, and then a cored tablet is placed on top of the powder. The core tablet is placed by a core tablet supply device, and after the second powder is further filled on top of the core tablet, it is compressed by an upper punch and a lower punch to obtain a core tablet as a molded product.

In the past, it was impossible to confirm that the core tablets were fed into the mortar at all. Therefore, it is necessary to sort out whether there is a non-core tablet or not, and since the core tablet tends to be small, it is impossible to sort out the difference in weight, etc. The present invention, which allows the core tablet to be directly confirmed, is effective.

(Problems to be Solved by the Invention) In a core tablet used for medicine, etc., the core tablet and the surrounding tablet portion are made of different types of drugs, and when the core tablet is taken, two or more locations in the body may be affected. However, in a rotary dry-coated tablet machine that produces dry-coated tablets, the core tablet must be fed into the mortar of a rotary disc that rotates at high speed. The core locks are held in advance in a disk having a large number of holes that synchronize with the disk, and the core locks are dropped one by one from above the mortar.

However, if the rotary core tablet machine stops, the core tablet will fly out of the hole in the disc due to inertia, and this is because a detector etc. can be used to confirm that the core tablet is held in the hole in the disc in advance. This may occur even after the tablet has been processed, and there is a risk that the tablet may be treated as a normal tablet even though the tablet has not actually been fed into the mortar.

In addition, due to scratches on the core lock or the influence of static electricity, the core lock that has been supplied to the disk in advance may not be fed into the mortar properly, that is, it may not be fed at all, or the timing of feeding may be incorrect and the core lock may be It is something that can be broken and thrown out, and if such a non-core tablet that does not contain a core tablet gets mixed into the product with a cored tablet,
Due to the nature of the dry-coated tablet, there was a problem that it had to be completely eliminated.

(Means for Solving the Problems) In order to solve such problems, the configuration of the present invention is such that the first powder 5a is put into the mortar hole of the mortar 2 disposed on the rotary disk 1, A core tablet 7 is placed on top of the powder 5a, and the second powder 5b is filled so as to cover the core tablet 7, and then compressed with an upper punch 17 and a lower punch 3 to produce a core tablet 11. After placing the core tablet 7 on the first powder 5a in the rotary core tablet machine,
A color-specific sensor 20 is provided before filling the second powder 5b, and the color-specific sensor 20 detects the powder 5a.
This is a rotary tablet machine with a core, which is characterized in that the presence or absence of a core tablet 7 is determined by detecting the color difference between the core tablet 7 and the core tablet 7, and non-core tablets are rejected.

(effect) The above technical means works as follows.

The core tablet 7 is supplied or placed on the mortar 2 containing the first powder 5a, and then the turntable 1 rotates to supply the second powder 5b.
At the position before the powder b is supplied, the color difference between the powder 5a and the core tablet 7 is determined by the color sensor 20, and if there is a predetermined color difference, it is recognized as normal. If not, the tablet is recognized as a non-coated tablet because it does not have that color difference, and is discharged as a defective product separately from the good tablets with a core.

Note that the color-coded sensor 20 is synchronized with the rotating mortar 2, and even if the powder used for the core tablet 7 and the powder first put into the mortar 2 are of the same color, the core tablet 7 The tablets compressed into tablets have a slightly darker color, so the color difference can be instantly detected.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a rotary disk on which a large number of dies 2 are arranged at equal intervals on the circumference.

6 is a core lock supply disc that is synchronized with the rotary disk 1 for dropping and supplying the core lock 7 into the hole of the mortar 2;
The core lock supply disk 6 holds in advance the core lock 7 sent from the feeder 12 through the feed pipe 13 in its hole, and detects that the core lock 7 is held. It is detected by the phototube 16, and if the core lock 7 is not held, the position of the mortar 2 that becomes the coreless lock is memorized by storing the signals from the timing phototube 15 and the timing hole 14. The coreless tablet is taken out into the coreless tablet chute 23 by the removal damper 18.

5a is the first powder put into the hole of the mortar 2, and the powder 5a falls from the powder outlet 19,
A fixed amount is fed into the mortar 2 by the first feeder 4 .

5b is a second powder that is filled by the second powder 8 after the first powder 5a enters the hole of the mortar 2 and the core tablet 7 is supplied.

3 is the lower pestle, 17 is the upper pestle, 9 is the lower pestle 3 and the upper pestle 17
This is a compression roll for compressing from above and below.

Reference numeral 11 denotes a dry-coated tablet which is normally molded with a core tablet 7. The dry-coated tablet 11 is taken out of the rotary disk 1 by a damper 10 and a chute 21 and falls into a receiving can 22.

Reference numeral 20 denotes a color-coded sensor disposed at a position after the core tablet 7 is supplied until the second powder is filled, and the color-coded sensor 20 is a detection sensor that transmits and receives color-coded signals. 20b, a control section 20a that amplifies and controls the signal, a fiber section 20c that irradiates the signal, and a stabilized power source 20d.

This color-coded sensor 20 normally
The first powder 5a is put into the hole, and then the core tablet 7 is supplied by the core tablet supply disk 6, i.e., the inside of the mortar 2 is placed on top of the powder 5a. , discriminates based on the color difference between the powder 5a and the core tablet 7, and recognizes that the core tablet 7 is supplied;
If the core lock 7 is not placed, it is determined that the core lock 7 is not being supplied since there is no color difference, and this is stored in the storage device 25.

This coreless lock is activated by the operation of the solenoid 24 connected to the storage device 25.
Activate the exclusion damper 18 and release the lockless lock shoot 2.
3, it is removed from the rotary disk 1.

(Effects of the Invention) As explained above, the present invention is capable of directly detecting the inside of the mortar using a color-coded sensor after the feeding process in which the core lock is fed into the mortar of the rotary disk. It is possible to determine the presence or absence of a tablet, and it can completely eliminate non-coated tablets, so there is no need for any other device to separate non-coated tablets from non-coated tablets, and non-coated tablets can be mixed into coated tablets. This has the effect of enabling quality control, which is important due to the nature of dry-coated tablets used in medicine, etc., which are completely free of oxidation.

[Brief explanation of drawings]

The drawings show a rotary dry-coated tablet machine according to the present invention, and FIG. 1 is a plan view, and FIG. 2 is a cross-sectional view illustrating the state inside the mortar when normally producing dry-coated tablets. , FIG. 3 is a sectional view illustrating the state inside the mortar when defective coreless tablets are manufactured. In the drawings, 1 is a rotary disk, 2 is a mortar, 3 is a lower punch, 4 is a first feeder, 5a and 5b are powders, and 6
1 is a core tablet supply disc, 7 is a core tablet, 8 is a second feed, 9 is a compression roll, 10 is a damper, 11 is a core tablet, 12 is a feeder, 13 is a feeding pipe, 1
4 is a timing hole, 15 is a timing photocell, 1
6 is a core lock detection phototube, 17 is an upper punch, 18 is an exclusion damper, 19 is a powder dropper, 20 is a color-coded sensor, 20a is a control section, 20b is a detection section, 20c is a fiber section, 20d is a stabilizing power source, 21 is a chute, 22 is a receiving can, 23 is a non-nuclear tablet chute, 24
2 is a solenoid, and 25 is a storage device.

Claims (1)

[Claims] 1 Put the first powder 5a into the mortar hole of the mortar 2 disposed on the rotary disk 1, place the core tablet 7 on top of the powder 5a, and place the second powder so as to cover the core tablet 7. In a rotary dry-coated tablet machine that produces a dry-coated tablet 11 by compressing it with an upper punch 17 and a lower punch 3 after filling the powder 5b,
After placing the core tablet 7 on the first powder 5a, the second
Before filling the powder 5b, the color-coded sensor 2
The rotary type is characterized in that the presence or absence of the core tablet 7 is determined by detecting the color difference between the powder 5a and the core tablet 7 with the color-specific sensor 20, and the non-core tablets are excluded. Core tablet machine.