JPH07179333A - Tablet - Google Patents

Abstract

PURPOSE:To obtain a simply dividable and easily producible tablet in a scored shape having beveled edges and concave rounded surfaces. CONSTITUTION:This tablet 1 is formed into a scored shape having beveled edges and concave rounded surfaces and obtained by preparing a lateral band part 2 of a prescribed width over the whole periphery and respectively providing a boundary part between the lateral band part 2 and each concave rounded surface 3 formed on both surfaces with a beveled edge 4 and further forming each scored dividing line part 5 so as to bisect the concave rounded surface 3. A chamfered tilted part 7 tilted so as to gradually deepen from each edge part 6 most separate from the scored dividing line part 5 thereto is formed in the boundary between each beveled edge 4 and each concave rounded surface 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tablet having a R-shaped crooked corner surface having a scored parting line for facilitating division.

[0002]

2. Description of the Related Art Many tablets such as pharmaceuticals have a score line part at the center of at least one surface in order to facilitate divided administration. Then, in order to easily perform the division with a particularly small force, one surface thereof is inclined so that it gradually becomes deeper from the farthest part to the scoring score line part toward the scoring score line part. Is also being developed. That is, this tablet can be divided into two by placing it on the fixed surface with the surface having the scoring parting line part facing downward and gently pressing the central part.

As an application of such an idea to a corner-shaped tablet, there is one disclosed in JP-A-61-289027. That is, this product has a scoring parting line part formed at the center of one surface of the tablet, and both sides of the scoring parting line part are inclined surfaces, and a corner portion is formed between the inclined surface and the side band part. is there.

[0004]

However, in such a conventional one, since the corner portion having a substantially constant width is formed between the inclined surface and the side band portion, the width of the side band portion is gradually increased in the circumferential direction. The shape will change. Therefore, when molding such tablets with a compression molding machine, the outer peripheral edge of the tip of the punch inserted into the die is inclined with respect to the plane orthogonal to the axis of the punch. Therefore, it becomes difficult to measure the total size of the punch,
This will lead to problems such as difficulty in manufacturing and setting the punch.

It is an object of the present invention to provide a tablet having a concave R-shaped corner surface shape that can solve such a problem.

[0006]

The present invention takes the following means in order to achieve such an object. That is, the tablet according to the present invention has a side band portion having a constant width over the entire circumference, and the boundary portion between the side band portion and the concave R surface formed on at least one surface forms a corner angle, and the concave R surface is formed. Two
A tablet having a concave R-faced corner shape, in which a score line is formed so as to divide, at the boundary between the corner angle and the concave R surface, from an edge part farthest from the score line part. It is characterized in that a chamfered inclined portion is formed so as to be gradually deepened toward the scoring parting line portion.

For particularly easy manufacture, it is desirable to have the chamfered ramp flat. In that case, the width of the chamfered inclined portion in the standard tablet is preferably about 0.1 mm to 0.5 mm.

[0008]

With this structure, when the surface having the scoring parting line portion faces downward and is placed on the fixed surface, not only the middle part of the scoring parting line part corresponding to the concave R surface, At both ends of the scoring chamfer corresponding to the chamfered slope, the tablet is in contact with the fixed surface, and only abuts the fixed surface at the two points farthest from the scoring secant of the tablet. become. Therefore, when the central portion of the tablet is pressed in the direction of the fixed surface, it becomes possible to easily divide the tablet into two parts with the scoring dividing line part as a boundary.

Moreover, since the side band portion of the tablet has a constant width, when the powder filled in the die is compressed by the lower punch and the upper punch to be manufactured, the tip of the punch inserted into the die is outside the tip. The peripheral edge will be included in a plane orthogonal to the axes of the punch and die. Therefore, the tip end surface of the punch and the base end surface of the punch pressed by the compression roll are parallel to each other, and the total dimension of the punch is easily measured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

This tablet 1 has a concave R-angled corner shape, and has a side band portion 2 having a constant width over the entire circumference as shown in FIGS. A corner portion 4 is formed at a boundary portion with the spherical concave R surface 3 formed in 1., and a scoring dividing line portion 5 having a V-shaped cross section is formed so as to divide each concave R surface 3 into two. Then, at the boundary between the corner angle 4 and the concave R surface 3, a plane surface inclined so as to become gradually deeper from the edge portion 6 farthest from the scoring dividing line portion 5 toward the scoring dividing line portion 5. The inclined slope portion 7 is formed. Although shown in an exaggerated manner in the drawings, for example, in the tablet 1 having a diameter of about 8 mm, the chamfered inclined portion 7 has a width of about 0.1 mm in the vicinity of the edge portion 6 and a scoring parting line portion. 0.5m near 5
It is desirable to set the width to about m. If the diameter is large, the width in the vicinity of the scored score line portion 5 correspondingly increases.

With this structure, when the tablet 1 is placed on the fixed surface 8 as shown in FIG.
The tablet 1 comes into contact with the fixed surface 8 not only in the middle portion of the scored scored line portion 5 corresponding to the surface 3 but also in both end portions of the scored scored line portion 5 corresponding to the chamfered inclined portion 7, Tablet 1
Only the two edge portions 6 farthest from the scoring dividing line portion 5 come into contact with the fixed surface 8. Therefore, when the central portion of the tablet 1 is pressed in the direction of the fixing surface 8, as shown in FIG. 5, it is possible to easily divide the tablet 1 into two with the scoring score line portion 5 as a boundary.

The tablet 1 is compression molded using upper and lower punches produced by a mother die as shown in FIGS. That is, first, as shown in FIGS. 6 and 7,
The metal material for master mold is processed by a lathe or the like to obtain a primary processed product 101A. The primary processed product 101A has a portion 102 corresponding to a side band portion having a constant width over the entire circumference, and a boundary portion between the portion 102 corresponding to the side band portion and a spherical concave R surface corresponding portion 103 formed on both surfaces is formed into a corner. The corner-corresponding portion 104 is formed. Next, the both sides of this primary processed product 101A are subjected to cutting work with a V-shaped cross section to obtain a secondary processed product 101B having a part 105 corresponding to a secant as shown in FIGS. 8 and 9. After that, the concave R in the secondary processed product 101B
The boundary between the surface-corresponding portion 103 and the corner-corresponding portion 104 is subjected to planar polishing to form the inclined-portion-corresponding portion 107, and a mother die 101C as shown in FIGS. 10 and 11 is obtained. The mother die 101C has the same shape as the tablet 1 described above, and the mother die 101C is completed by cold forging the tips of the upper and lower punches (not shown). Get a pestle and a lower pestle. Then, the powder introduced into the die is compressed by these upper and lower punches to successively manufacture the tablet 1.

Therefore, according to the tablet 1 of the present invention, it becomes possible to easily manufacture the mother die 101C by using an ordinary machine tool. Further, since the side band portion 2 has a constant width, when the powder filled in the die is compressed by the lower and upper punches to be manufactured, the outer peripheral edge of the tip of the punch inserted into the die is the punch and the die. It will be included in the plane orthogonal to the axis center of. Therefore, the tip end surface of the punch and the base end surface of the punch pressed by the compression roll are parallel to each other, and the total dimension of the punch is easily measured. Therefore, the upper and lower punches can be easily manufactured, and the setting of the compression molding machine does not require time and labor to adjust the position of the lower punches, and the manufacturing can be simplified as a whole. Becomes

The present invention is not necessarily limited to the above-mentioned embodiment, and may be one as shown in FIG. 12 or FIG. 13, for example. That is, the tablet 1 shown in FIG. 12 has the chamfered inclined portion 7 in a curved shape. Further, the tablet 1 shown in FIG. 13 has a scoring score line portion 5 and a chamfered inclined portion 7 formed on only one surface.

In addition, various modifications can be made without departing from the spirit of the present invention.

[0017]

As described above in detail, according to the present invention, not only the scoring score line portion is provided, but also the edge part farthest from the scoring score line portion is gradually deepened toward the scoring score line portion. Since the chamfered inclined part that slopes is formed on the fixed surface, it can be easily divided by simply placing it on the fixed surface and pressing it lightly from above. It becomes possible to administer. Moreover, since the side band portion has a constant width over the entire circumference, the mother die and the upper and lower punches can be relatively easily manufactured in spite of the tablet having the concave R-shaped corner surface shape as described above. In addition, the upper and lower punches can be easily set on the powder compression molding machine to produce tablets.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing the same embodiment.

FIG. 3 is a front view showing the same embodiment.

FIG. 4 is an explanatory diagram showing an operation of the embodiment.

FIG. 5 is an explanatory view showing the operation of the embodiment.

FIG. 6 is a plan view for explaining a mother die manufacturing process.

FIG. 7 is a front view for explaining a manufacturing process of a mother die.

FIG. 8 is a plan view for explaining a mother die manufacturing process.

FIG. 9 is a front view for explaining a manufacturing process of a mother die.

FIG. 10 is a plan view for explaining a manufacturing process of a mother die.

FIG. 11 is a front view for explaining the manufacturing process of the mother die.

FIG. 12 is a front view corresponding to FIG. 3 showing another embodiment of the present invention.

FIG. 13 is a front view corresponding to FIG. 3 showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tablet 2 ... Side band 3 ... Recessed R surface 4 ... Corner angle 5 ... Crease score line part 6 ... Edge part 7 ... Chamfered inclined part 8 ... Fixed surface

Claims (3)

[Claims] 1. A side band portion having a constant width is formed over the entire circumference, and a boundary portion between the side band portion and a concave R surface formed on at least one surface forms a corner angle, and the concave R surface is divided into two parts. A tablet having a concave R-faced corner shape in which a scoring score line portion is formed on a ridge, and the scoring is applied to a boundary between the corner angle and the concave R surface from an edge portion farthest from the scoring score line portion. A tablet characterized in that a chamfered inclined portion is formed so as to be gradually deepened toward the score line portion. 2. The tablet according to claim 1, wherein the chamfered inclined portion is a flat surface. 3. The tablet according to claim 2, wherein the chamfered inclined portion is a flat surface having a width of about 0.1 mm to 0.5 mm.