JPH035920B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to a rotary laminated tablet manufacturing machine, and more specifically, powder is poured into a mortar an appropriate number of times during one rotation of a rotary disk. This relates to a rotary laminated tablet manufacturing machine that obtains a multi-layered molded product by filling the tablet, pre-compressing it each time it is filled, and finally performing main compression (prior technology). To obtain a laminated molded product by integrally compression molding the layers, the first powder is filled into a mortar and pre-compressed, and the semi-formed product is then injected with the second powder.
It is necessary to perform pre-compression each time the powder is sequentially filled, such as filling with powder, and to perform main compression after the last powder filling.

This is because if pre-compression is not performed, the powders from each filling will mix and become a seamless molded product, and conversely, if main compression is performed after each filling, each powder will remain separated. This is because they cannot be molded in one piece, or even if they can be molded, they easily separate.

Conventionally, a desired number of feed blocks are arranged and filled with powder during one rotation of a rotary disk with a large number of dies arranged around the periphery, and each time the powder is filled, the upper and lower punches are pre-compressed by a pre-compression roll. (approximately 100 kg/cm ² ), and after the final filling, the main compression (approximately several tons/cm ² ) is performed and the tablet is taken out from the rotary disk.

(Problems to be Solved by the Invention) Although it is possible to obtain a laminated molded product using such conventional techniques, the powder weight of each layer cannot be easily detected.

In other words, for laminated molded products, whether it is a pharmaceutical product or an electrical component, the powder weight of each layer is detected, the amount of powder filled is controlled to a predetermined weight, and the quality is periodically controlled. Must.

However, conventional laminated tablet manufacturing machines separate each layer after forming a laminated molded product and inspect its weight. In other words, the laminated molded product that has been fully compressed to become a product is cut into layers with a knife or the like to measure the weight. The problem is that the separation work is difficult, the detection accuracy is poor because each layer cannot be completely separated, and the detection time is long, resulting in poor productivity.

(Means for Solving the Problems) In order to solve these problems, according to this invention, a large number of mortars 2 arranged on the rotary disk 1 are filled with powder, and the upper punches 9 and In a rotary laminated tablet manufacturing machine that performs precompression with a lower punch 10, performs the filling and precompression sequentially a desired number of times during one rotation of the rotary disk 1, and finally performs main compression to produce a laminated molded product,
Upper punch precompression rolls 3a, 3b in the above precompression
The upper punch pre-compression roll shafts 3a and 3b, which are coaxial with and eccentric to the upper punch pre-compression roll shaft 14, are formed to be rotatable, and the lower punch lifting and lowering devices 5a and 5b are installed before the next powder filling. Provided is a rotary laminated tablet manufacturing machine characterized in that a molded product having a hardness that can be taken out by a compression force higher than that of pre-compression is taken out before the next powder is filled.

In the above configuration, the upper punch precompression roll shaft 14 can be rotated by the air cylinder 27.

In this case, it is possible to easily perform remote control, and the manufacturing machine can be protected against unintentional pressing force due to the buffering force (dissipating force) that air has due to its nature.

Further, in the above configuration, the upper punch precompression roll shaft 1
The rotation of No. 4 can be linked with the lower punch lifting devices 5a and 5b.

In this case, the temporarily compressed detection molded product can be automatically taken out at the time of desired detection.

(effect) The above technical means works as follows.

By making the pre-compression roll shafts 14 of the upper punch pre-compression rolls 3a, 3b eccentric and rotatable, the upper punch pre-compression roll shafts 14 can be adjusted as desired.
4 changes the outer peripheral position of the upper punch pre-compression rolls 3a, 3b, that is, the pressing position of the upper punch 9 (lowest position on the roll outer periphery).

Therefore, if the rotation described above is performed to lower the bottom of the upper punch 9 appropriately from the normal position to obtain a predetermined precompression force (approximately 100Kg/cm ² ), a compression force higher than the above precompression force (approximately 500Kg/cm 2 ) can be obtained. ² ) is compressed (temporary compression).

As a result, the pre-compressed detection molded product can be easily taken out in its solid state, whereas the semi-molded product cannot be taken out of the rotary plate 1 in its solid state by normal pre-compression alone. At the same time, it can maintain a solid shape that is easy to handle during work such as weight inspection.

Furthermore, by disposing the lower punch lifting devices 5a and 5b before the next powder filling, the molded product for detection in each preliminary compression can be taken out of the rotary disk 1, and for example, The weight of the detection molded product in 2 is directly the first powder filling amount, and the weight of the test molded product in the second preliminary compression is calculated by subtracting the weight of the first detection molded product from its weight. The weight of the molded product for detection can be detected at each pre-compression after the second compression.

(Embodiment) An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a vertical cross-sectional view of the main part at the center circumference of the mortar, Fig. 2 is a reduced plan view of the main part, and Fig. 3 is the same as that shown in Fig. 1. FIG. 4 is an enlarged vertical cross-sectional view of the main part.

Reference numeral 1 denotes a rotary disk on which a large number of dies 2 are arranged, and the rotary disk 1 includes a feed shaft 6a for filling the first powder during one rotation, upper and lower precompression rolls 3a for performing the first precompression, 4a and upper punch pre-compression roll shaft 1
4. The first lower punch lifting device 5a, the feeder 6b for filling the second powder, the upper and lower precompression rolls 3b, 4b for performing the second precompression, the upper punch precompression roll shaft 14, and the second lower A punch lifting device 5b, a feeder 6c for filling the third powder, a main compression roll 11 for main compression, a push-up rail 23 for taking out the main compressed laminate molded product, and the like are arranged in this order.

The upper punch precompression roll shaft 14 is eccentric with respect to the upper punch precompression rolls 3a and 3b, respectively, and the precompression roll shaft 14 is provided with a rotating lever 28.
is attached, and its rotating lever 28 is usually held by a spring body 29, and the upper punch compression roll shaft 14
When the air cylinder 27 rotates, the projectile body 2
It is formed to be freely rotatable by a rotation device such as pressing a rotation lever 28 against the rotation lever 9 .

The lower punch elevating devices 5a and 5b are each formed from an inspection rail 17, an inspection rail stand 18, an inspection rail shaft 19, an inspection lever 20, etc., and the detection molding is arbitrarily temporarily compressed by operating the respective inspection levers 20. The product can be taken out of the rotary disk 1, and the upper punch is connected to the rotation device of the pre-compression roll shaft 14.

7a and 7b are scrapers for detection, 8a and 8b are chute for detection, and the lower punch lifting devices 5a and 5 are
The detection molded product pushed up onto the rotary disk 1 by the operation b is taken out of the rotary disk 1.

9 is an upper punch, 10 is a lower punch, 12 is a product take-out scraper for taking out a laminate molded product which is a fully compressed product, 13 is a product take-out chute, 15 is a lower punch 10
A dosing rail that determines the filling amount by adjusting the height of the
21 is a dosing rail adjustment shaft, 22 is a dosing rail stand, 16 is a transfer rail, 24 is a product take-out rail, 25 is a lower holder take-out rail, 26 is a lowering device, 30 is a dust on the rotary plate 1 before each powder filling. 31 is a discharge scraper that separates defective products from products and takes them out.

In operation, if the upper punch precompression roll shaft 14 is rotated in the direction of the arrow by operating its rotation device, the position of the upper punch 9 will be lowered, and the pressure of the upper punch 9 and the lower punch 10 will cause normal precompression. Temporary compression can be made higher.

The operation of this rotation device is performed by the inspection lever 2.
For example, if the inspection lever 20 in the first precompression is operated, the compression roll shaft 14 of the upper punch precompression roll 3a will rotate and the lower punch will move up and down. When the device 5a is activated, the detection molded product is temporarily compressed so as to be removable.
It is taken out of the rotary disk 1 and subjected to a weight inspection.

In addition, in this connection, the lower punch lifting device 5
The rotary device may be configured to operate automatically in response to the operation of the rotors a and 5b, and the lower punch lifting devices 5a and 5b may be configured to operate automatically in response to the operation of the rotary device. Good too.

In addition, in the above-mentioned weight inspection, a weight measuring device can be connected to the detection chute 8a, 8b to automatically carry out the weight inspection, and the first detection chute 8
By linking the weight measuring device connected to a and the weight measuring device connected to the second detection chute 8b, the weight of the packed powder can be automatically calculated. The weight can be automatically modified and changed.

(Effects of the Invention) As explained above, the present invention makes the upper punch precompression roll shaft eccentric and rotates it to change the compression position of the upper punch, so that the normal precompression force can be maintained during inspection. This increases the hardness of the molded product so that it can be taken out, and the molded product for detection can be taken out each time the powder is filled, making it possible to easily detect the weight of the filled powder each time the powder is filled.

In addition, since the molded product is not forcibly separated to detect the powder weight of each layer, the detection accuracy is high and more accurate weight management is possible, and the filling powder can be easily adjusted and managed, improving productivity. It has the effect that it can be done.

[Brief explanation of drawings]

The drawings show an embodiment of the rotary laminated tablet manufacturing machine according to the present invention, in which Fig. 1 is a vertical sectional view of the main part at the center circumference of the mortar, Fig. 2 is a reduced plan view of the main part, and Fig. 3 is a plan view of the main part. 1 is an enlarged vertical sectional view of the main part of FIG. 1, and FIG. 4 is a vertical sectional side view of the main part. In the drawing, 1 is a rotary disk, 2 is a mortar, 3a, 3
b is an upper punch pre-compression roll, 4a and 4b are lower punch pre-compression rolls, 5a and 5b are lower punch lifting devices, 6a and 6
b, 6c are feed shakers, 7a, 7b are detection scrapers, 8a, 8b are detection chute, 9 is an upper punch, 10 is a lower punch, 11 is a main compression roll, 12 is a product take-out scraper, 13 is a product take-out chute,
Reference numeral 14 indicates an upper punch pre-compression roll shaft, and 15 indicates a portion rail.

Claims (1)

[Claims] 1 Powder is filled into a large number of mortars 2 arranged on the rotary disk 1 and pre-compressed by an upper punch 9 and a lower punch 10, and the above-mentioned filling is carried out during one revolution of the rotary disk 1. In a rotary laminated tablet manufacturing machine that sequentially performs precompression and precompression a desired number of times and finally performs main compression to produce a laminated molded product, the upper punch precompression roll shaft 14 of the upper punch precompression rolls 3a and 3b in the above precompression is The upper punch pre-compression rolls 3a and 3b located on the eccentric part of the same axis as the center are formed to be rotatable, and the lower punch lifting devices 5a and 5b are arranged before the next powder filling to achieve higher compression than the pre-compression. A rotary laminated tablet manufacturing machine characterized in that the molded product is hard enough to be taken out by force before being filled with the next powder. 2. The rotary laminated tablet manufacturing machine according to claim 1, wherein the upper punch pre-compression roll shaft 14 is rotated by an air cylinder 27. 3. The rotary laminated tablet manufacturing machine according to claim 1 or 2, characterized in that the rotation of the upper punch pre-compression roll shaft 14 is linked to the lower punch lifting and lowering devices 5a and 5b. .