JP5696420B2 - Tableting machine and punch member - Google Patents

Description

  The present invention relates to a tableting machine and a scissors member, and more particularly to a tableting machine for compressing raw materials to form a tablet and a scissors member used in the tableting machine.

  For example, Japanese Unexamined Patent Publication No. 7-8540 (Patent Document 1), Japanese Unexamined Patent Application Publication No. 2002-239794 (Patent Document 2), Japanese Unexamined Patent Application Publication No. 2001-26533 (Patent Document 3), It is disclosed by Unexamined-Japanese-Patent No. 2001-205493 (patent document 4).

Japanese Patent Laid-Open No. 7-8540 JP 2002-239794 A JP 2001-26533 A JP 2001-205493 A

  Using a tableting machine, when powdered raw material is put into the mortar and compressed with upper and lower rivets to form a tablet, the raw material powder of the tablet adheres to the ridge and the surface of the tablet becomes cloudy or fuzzy. In some cases, tableting troubles such as picking or sticking, or binding in which the tablet adheres to the die and scratches the surface of the tablet may occur. In particular, when using granules with small particle size that easily adhere to mortars and pestle as raw material powders, when forming tablets with engraved or scored lines on the lower heel, a formulation with a small amount of lubricant such as magnesium stearate is added. In such cases, there is a problem that tableting troubles are likely to occur.

  The present invention has been made in view of the above problems, and a main object thereof is to provide a tableting machine that can reduce tableting troubles.

  A tableting machine according to the present invention includes a mortar in which a mortar hole is formed, an upper punch disposed on the upper side of the mortar, and a lower punch disposed on the lower side of the mortar, and is supplied to the mortar hole. The raw material is compressed between upper and lower punches to form tablets. The lower punch supplies air from the lower side to the inside of the mortar with the upward movement for discharging the formed tablet to the outside of the mortar.

  In the tableting machine, the lower punch includes a barrel having a diameter larger than the diameter of the mortar and a heel that fits in the mortar, and the lower punch moves upward and the tablet is outside the mortar. The upper end of the barrel may be located near the lower surface of the mortar.

  The tableting machine includes a disc, a through hole is formed in the disc, and the disc holds the die inside the through hole, and the lower punch moves upward and the tablet moves to the outside of the die hole. When discharged, the upper end of the barrel may be located inside the through hole.

  The tableting machine includes a scissor member, the scissor member is attached to the lower punch and has a diameter larger than the diameter of the mortar hole, and when the lower punch moves upward and the tablet is discharged to the outside of the mortar hole The saddle member may be located near the lower surface of the mortar.

  A heel member according to the present invention comprises a mortar in which a mortar hole is formed, an upper ridge disposed on the upper side of the mortar, and a lower ridge disposed on the lower side of the mortar, and a raw material supplied to the mortar hole This is a scissors member having a diameter larger than that of the mortar hole, which is used in a tableting machine for forming a tablet by compressing between the upper scissors and the lower scissors. The heel member is positioned near the lower surface of the mortar when the lower heel moves upward in a state where it is attached to the lower heel and the tablet is discharged out of the mortar hole.

  According to the tableting machine of the present invention, it is possible to reduce tableting troubles.

It is a schematic diagram explaining the tableting process of the tableting machine of this Embodiment. It is a partial cross-sectional schematic diagram which shows the detail of a structure of a lower arm, an upper arm, and a die. It is a disassembled cross-sectional perspective view of a mortar holding disk and a mortar. It is a fragmentary sectional view which shows the state by which the tablet was compression-molded by the pressurization from an upper punch and a lower punch in the mortar in the process (e) shown in FIG. It is a fragmentary sectional view which shows the state which both the upper and lower eyelids moved upwards with respect to the die | dye in the process (f) shown in FIG. It is a fragmentary sectional view which shows the state which both the upper arm and the lower arm moved to the upper direction in the process (g) shown in FIG. It is a fragmentary sectional view which shows typically the flow of the air which generate | occur | produces in a mortar in the process (g) shown in FIG. It is a fragmentary sectional view which shows the modification of a lower arm. It is a fragmentary sectional view showing other modifications of the lower arm. FIG. 10 is a partial cross-sectional view showing still another modified example of the lower eyelid. It is a perspective view of the collar member shown in FIG.

Embodiments of the present invention will be described below with reference to the drawings. In the following drawings,
The same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

  Drawing 1 is a mimetic diagram explaining the tableting process of tableting machine 1 of this embodiment. FIG. 2 is a partial cross-sectional schematic diagram showing details of the configuration of the lower punch 10, the upper punch 40 and the mortar 60 included in the tableting machine 1. First, with reference to FIG. 1 and FIG. 2, the structure of the tableting machine 1 of this Embodiment is demonstrated. As shown in FIGS. 1 and 2, the tableting machine 1 includes a mortar holding plate 2 as a base. The mortar holding plate 2 is formed with a through hole penetrating the mortar holding plate 2 in the thickness direction. A mortar 60 is disposed inside the through hole of the mortar holding plate 2, and the mortar 60 is held by the mortar holding plate 2.

  The mortar holding disk 2 may be provided as a rotating disk that is rotatably provided via a shaft. In this case, a plurality of dies 60 may be held in the circumferential direction of the rotating mortar holding disk 2, and the tableting process may be performed simultaneously and continuously as the mortar holding disk 2 rotates. The configuration is not limited to this, and for example, a small test tablet press 1 including a mortar holding disc 2 that holds only one die 60 and is immovable may be used.

  The mortar 60 is formed with a mortar hole 66 that penetrates the mortar 60 in the thickness direction. The mortar hole 66 is formed so as to penetrate the mortar 60 from the upper surface 62 to the lower surface 64 of the mortar 60. An outer circumferential groove 68 is formed on the outer circumferential surface of the mortar 60 so as to extend in the circumferential direction.

  On the lower side of the mortar 60, the lower punch 10 is arranged. The lower rod 10 includes a barrel portion 18 that forms a main body of the lower rod 10, a flange 20 provided on the distal end side (upper side in the drawing) of the lower rod 10 with respect to the barrel portion 18, and a lower flange relative to the barrel portion 18. 10 and a head portion 12 provided on the rear end side (lower side in the figure). The head 12 is integrally attached to the body 18 with a neck 16 interposed therebetween. On the surface on the rear end side of the head 12, a flat portion 14 that receives pressure applied to the lower punch 10 when a tablet is formed is formed.

  The heel tip 20 is attached to an upper end 26 that is an end portion on the distal end side of the body portion 18. The upper end 26 is formed in a truncated cone shape, and connects the barrel portion 18 having a relatively large diameter and the tip 20 having a relatively small diameter. A tip 22 for determining the shape, size, and marking of the tablet 82 to be molded is disposed at the tip of the heel tip 20. The chip 22 is formed on the surface of the tablet 82 while forming the tablet 82 into a predetermined shape and size by forming the tablet 82 while the chip surface 24 which is one surface thereof is pressed against the tablet 82.

  An upper punch 40 is disposed on the upper side of the mortar 60. The upper collar 40 includes a body 48 that forms the main body of the upper collar 40, a collar 50 provided on the distal end side (lower side in the figure) of the upper collar 40 with respect to the body 48, and an upper side relative to the body 48. And a head portion 42 provided on the rear end side (upper side in the drawing) of the flange 40. The heel tip 50 has a facing surface 54 provided to face the chip surface 24 of the lower heel 10. The upper collar 40 is disposed to face the lower collar 10. By pressing the raw material from above and below by the facing surface 54 and the chip surface 24, the tablet 82 is formed. The head portion 42 is integrally attached to the trunk portion 48 with a neck portion 46 interposed. A flat portion 44 that receives pressure applied to the upper punch 40 when a tablet is formed is formed on the rear end surface of the head portion 42.

  As shown in FIG. 1, the tableting machine 1 includes an upper punch guide 3 and a lower punch guide 4. The upper eyelid guide 3 guides the upper eyelid 40 and changes the position of the upper eyelid 40 in the vertical direction. The upper iron guide 3 reciprocates the upper iron 40 relative to the die 60 in the longitudinal direction thereof. The lower eyelid guide 4 guides the lower eyelid 10 and changes the vertical position of the lower eyelid 10. The lower eyelid guide 4 reciprocates the lower eyelid 10 relative to the die 60 in its longitudinal direction. The tableting machine 1 further applies pressure to the upper punch 40 from the rear end side of the upper punch 40 and the upper preload roller 5 and the upper main pressure roller 7 that apply pressure to the upper punch 40, and from the rear end side of the lower punch 10 to the lower punch 10 A lower preloading roller 6 and a lower main pressure roller 8 are provided.

  FIG. 3 is an exploded cross-sectional perspective view of the mortar holding plate 2 and the mortar 60. As shown in FIG. 3, the mortar holding plate 2 is formed with a through hole 72 that penetrates the mortar holding plate 2 in the thickness direction. The through hole 72 has the same or slightly larger diameter than the outer diameter of the mortar 60. A circumferential groove 74 extending in the circumferential direction is formed on the wall surface of the through hole 72. The circumferential groove 74 is formed at a position facing the outer circumferential groove 68 formed in the mortar 60 when the mortar 60 is attached to the mortar holding disc 2. With the mortar 60 attached to the mortar holding disc 2, a ring-shaped space is formed by the outer circumferential groove 68 and the circumferential groove 74 facing each other. In this ring-shaped space, a die fixing member such as a pin for fixing the die 60 to the die holding plate 2 is arranged, so that the die 60 is fixed integrally to the die holding plate 2 inside the through hole 72. The

  The mortar holding disc 2 has a mortar receiving portion 76 in which a part of the wall surface of the through hole 72 protrudes radially inward. Since the mortar receiving portion 76 is formed so as to protrude from the wall surface of the through hole 72, a reduced diameter portion 78 in which the diameter of the through hole 72 is reduced is formed. The mortar 60 is placed on the mortar receiving portion 76 and is disposed inside the through hole 72. As shown in FIG. 3, the reduced diameter portion 78 has a diameter D1. A mortar hole 66 formed in the mortar 60 has a diameter D2.

  Next, with reference to FIG. 1, each process of the shaping | molding of the tablet 82 performed using the tableting machine 1 is demonstrated. (A)-(g) in FIG. 1 shows each process of a tableting process illustratively, Comprising: The tableting machine 1 can perform each process shown to (a)-(g) simultaneously. It may be that which cannot be performed at the same time.

  At the start of the tableting process, the lower punch 10 is arranged such that the tip 20 is inserted into the mortar hole 66 and fitted into the mortar 60. On the other hand, the tip 50 of the upper punch 40 is disposed outside the mortar 66, and the upper punch 40 is disposed above the mortar 60 and away from the mortar 60 (a). Thus, the powdery raw material 81 is supplied to the inside of the mortar hole 66 in a state where the lower punch 10 and the upper punch 40 are arranged in the vertical direction (b). The raw material 81 may include any known component. For example, the raw material 81 may include an active component according to a use such as a pharmaceutical component and an additive such as an excipient, a binder, or a lubricant.

  Subsequently, the upper punch 40 moves downward according to the upper guide 3 and approaches the die 60 (c). The upper punch 40 moves downward until the tip 50 substantially reaches the upper surface 62 of the mortar 60. In this state, the upper preload roller 5 contacts the flat portion 44 of the head portion 42 of the upper collar 40 and a downward force acts on the upper collar 40, and the lower preload roller 6 is flat on the head portion 12 of the lower collar 10. An upward force acts on the lower eyelid 10 in contact with the portion 14 (d). A force is applied from the upper preload roller 5 to the upper rod 40, and a force is applied from the lower preload roller 6 to the lower rod 10, whereby pressure is applied to the powdery raw material 81 from both the upper and lower directions.

  Subsequently, the upper main pressure roller 7 comes into contact with the flat portion 44 of the head portion 42 of the upper collar 40, and a large downward force acts on the upper collar 40, and the lower main pressure roller 8 moves on the head 12 of the lower collar 10. A large upward force is applied to the lower eyelid 10 in contact with the flat portion 14 (e). At this time, the upper punch 40 further moves downward, the tip 50 of the upper punch 40 is inserted into the mortar hole 66, and the upper ridge 40 is fitted into the mortar hole 66. By applying a larger pressure to the raw material 81 supplied to the mortar hole 66 by the upper main pressure roller 7 and the lower main pressure roller 8, the raw material 81 is moved between the upper punch 40 and the lower punch 10 inside the mortar hole 66. The tablet 82 is formed by compression. FIG. 4 is a partial cross-sectional view showing a state where the tablet 82 is compression-molded by pressurization from the upper punch 40 and the lower punch 10 in the mortar hole 66 in the step (e).

  After the compression molding of the tablet 82 is completed, the lower punch 10 is moved upward according to the lower punch guide 4, and the upper punch 40 is also moved upward according to the upper punch guide 3. Move to the outside of 66 (f). Thereafter, the lower punch 10 further moves upward, and the tablet 82 is discharged to the outside of the mortar 66 (g). FIGS. 5 and 6 are partial cross-sectional views showing a state where both the upper punch 40 and the lower punch 10 are moved upward with respect to the die 60 in the steps (f) and (g). The tablet 82 moved to the outside of the mortar hole 66 comes into contact with the scraper 9 and is scraped off by the scraper 9 to be discharged from the mortar holding plate 2 and collected. The upper surface 62 of the mortar 60 is a surface on the side where the formed tablet 82 is discharged to the outside of the mortar hole 66, and the lower surface 64 of the mortar 60 is a reverse surface opposite to the above surface.

  Through the above-described tableting steps (a) to (g), the powdery raw material 81 is pressed by the upper punch 40 and the lower punch 10 inside the mortar hole 66, and a tablet 82 having a desired shape and size is obtained. It is compression molded. At this time, a desired stamp is formed on the surface of the tablet 82 simultaneously with the compression molding of the tablet 82 by marking the tip surface 24 that forms the distal end surface of the lower eyelid 10.

  FIG. 7 is a partial cross-sectional view schematically showing the flow of air generated in the mortar hole 66 in the step (g) shown in FIG. As shown in FIG. 7, when the lower punch 10 moves upward and the tablet 82 is discharged to the outside of the mortar 66, the upper end 26 of the body portion 18 of the lower punch 10 is formed on the mortar holding plate 2. It is located inside the through hole 72 and is located near the lower surface 64 of the mortar 60. Here, the diameter d1 of the trunk | drum 18 is larger than the diameter D2 of the mortar hole 66 shown in FIG. The lower jaw 10 includes a body portion 18 having a diameter larger than the diameter of the mortar hole 66. On the other hand, since the diameter d2 of the tip 20 and the diameter d3 of the tip 22 are smaller than the diameter D2 of the die hole 66, the tip 20 and the tip 22 are fitted in the die hole 66.

  When the barrel portion 18 having a diameter larger than that of the mortar 66 enters the reduced diameter portion 78 of the through hole 72 and approaches the lower surface 64 of the mortar 60, the air near the lower surface 64 of the mortar 60 is compressed, and the mortar hole 66 is compressed. An inward air flow is generated. At this time, the vicinity of the upper end 26 of the body portion 18 is fitted into the inside of the reduced diameter portion 78 which is a part of the through hole 72, so that the air inside the reduced diameter portion 78 is efficiently compressed by the piston action of the body portion 18. And more compressed air flows into the mortar 66. As the lower punch 10 moves upward in order to discharge the formed tablet 82 to the outside of the mortar 66, the lower punch 10 moves air from the lower side to the inside of the mortar 66 as shown by the arrow in FIG. 7. Supply.

  The compressed air that has flowed into the mortar 66 flows upward in the mortar 66 through the gap between the lower mortar 10 and the mortar 66, and the tip 22 and the mortar 66 at the tip of the lower mortar 10. And is discharged to the upper surface 62 side of the die 60. The tablet 82 compression-molded between the upper punch 40 and the lower punch 10 is placed on the chip surface 24 of the chip 22, and this air flow causes the tablet 82 to float from the chip surface 24. A force acts on the tablet 82. The tablet 82 is slightly separated from the chip surface 24 because the air flow in the mortar 66 generated by the upward movement of the lower punch 10 exerts pressure on the tablet 82.

  As a result, the impact on the tablet 82 by the scraper 9 when the scraper 9 for collecting the tablet 82 comes into contact with the tablet 82 is alleviated, and the tablet 82 comes into contact with the scraper 9 from the chip surface 24 of the lower punch 10. Easily separated away. Therefore, tableting troubles such as lamination in which a part of the surface of the tablet 82 is peeled in layers on the chip surface 24 of the lower punch 10 and sticking in which the powder of the raw material 81 of the tablet 82 adheres to the chip surface 24 are less likely to occur. . Therefore, the tableting machine 1 of the present embodiment can obtain an effect of reducing tableting troubles.

  In the state where the lower punch 10 is lifted upward in order to discharge the compression-molded tablet 82 shown in FIG. It protrudes about 0.1 mm to 0.2 mm with respect to 62. In this state, the distance from the lower surface 64 of the die 60 to the upper end 26 of the body portion 18 of the lower punch 10 is usually about 3 to 5 mm.

  Before scraping the tablet 82 using the scraper 9 and collecting the tablet 82 from the tablet press 1, the distance between the lower surface 64 of the mortar 60 and the barrel 18 is compared with the above-mentioned about 3-5 mm. A step of moving the lower eyelid 10 upward may be further provided so as to be smaller. At this time, the position of the lower punch 10 in the vertical direction with respect to the die 60 may be determined so that the distance between the lower surface 64 of the die 60 and the body portion 18 is in a range of 0.1 mm to 3 mm, for example. In this way, since the compressed air can flow into the mortar hole 66 more effectively, the tablet 82 can be lifted more reliably from the chip surface 24, and the tablet 82 can adhere to the chip surface 24. It can be easily suppressed.

  When the mortar holding disc 2 is a rotary disc, the mortar holding disc 2 usually moves at a rotational speed of about 20 to 50 rpm, and the upper and lower jaws 40 and 10 are appropriately moved in the vertical direction along with this rotation. Thus, the tablet 82 is compressed. In this case, the flow of air flowing into the mortar hole 66 depends on the length of the body portion 18 of the lower punch 10 entering the through hole 72. Therefore, an appropriate lower eyelid guide 4 is provided so that the body portion 18 of the lower eyelid 10 enters the through hole 72 by a length sufficient to generate an air flow necessary for the tablet 82 to float from the chip surface 24. It may be formed to control the vertical movement of the lower eyelid 10.

  The diameter D1 of the reduced diameter portion 78 of the through hole 72 and the diameter D2 of the mortar hole 66 and the diameter d1 of the lower punch 10 shown in FIG. 3 are related to the diameter d1 larger than D2 and smaller than D1, that is, D2 <d1 <D1. It may be determined so as to satisfy the following formula. By determining the dimensions in this way, when the lower punch 10 is moved upward, the upper end 26 of the lower punch 10 can be fitted into the reduced diameter portion 78, and the tip of the mortar 66 is placed in the tip. 20 fits, but the body 18 does not fit. Therefore, the air in the reduced diameter portion 78 is compressed between the mortar 60 and the lower punch 10 and introduced into the mortar hole 66, and an upward air flow can be reliably generated in the mortar hole 66. If the dimension is determined so that the diameter d1 of the lower eyelid 10 is slightly smaller than the diameter D1 of the reduced diameter portion, more air can be caused to flow into the mortar 66, and to the chip surface 24 of the tablet 82. This is desirable because it can more reliably prevent the adhesion.

  The gap between the outer peripheral surface of the tip 22 and the wall surface of the mortar 66 can be increased so that the flow velocity of the air jetted upward (on the side of the tip surface 24 on which the tablet 82 is placed) via the gap can be increased. It is preferable to determine as small as possible. For example, the mortar hole 66 and the tip 22 may be formed so that the diameter D2 of the mortar hole 66 is larger by about 0.02 to 0.1 mm than the diameter d3 of the tip 22. The influence of the space between the tip 20 and the mortar 66 on the air flow to the tablet 82 is small, and therefore the diameter d2 of the tip 20 is sufficient to ensure the strength of the lower punch 10 and to hold the tip 22 appropriately. It only has to be decided.

  The height h1 of the mortar 60 (that is, the distance between the upper surface 62 and the lower surface 64 of the mortar 60) h1 and the height h2 of the mortar receiving portion 76 of the mortar holding disc 2 are As long as it is close enough to 64 and can introduce air into the mortar 66, the size may be determined arbitrarily. For example, the height h1 of the mortar 60 may be about 27.5 mm, and the height h2 of the mortar receiving portion 76 may be about 2 mm.

  FIG. 8 is a partial cross-sectional view showing a modified example of the lower eyelid 10. The lower rod 10 shown in FIG. 8 is different from the lower rod 10 shown in FIG. 7 in that the upper end 26 of the trunk portion 18 has a flat circular shape. The lower punch 10 is provided so that the planar upper end 26 faces the lower surface 64 of the mortar 60 and the upper end 26 and the lower surface 64 are substantially parallel.

  7 and 8, the volume of the space surrounded by the upper end 26 of the lower punch 10, the lower surface 64 of the mortar, and the wall surface of the mortar hole 66 is larger in FIG. Although the air in the space flows into the die hole 66 by the upward movement of the lower punch 10, in the embodiment of FIG. 8 in which the volume of the space is relatively large, more air is introduced into the die hole 66. Can be introduced. Therefore, the pressure of air for lifting the tablet 82 from the chip surface 24 can be increased, and adhesion of the tablet 82 to the chip surface 24 can be further suppressed.

  FIG. 9 is a partial cross-sectional view showing another modified example of the lower eyelid 10. In the modification shown in FIG. 9, the lower punch 10 has the same external shape as a conventional tableting machine. However, the tableting machine 1 shown in FIG. 9 is different from the conventional tableting machine in that it includes a scissors member 31 that can be attached to the lower scissors 10. As shown in FIG. 9, the flange member 31 has a diameter larger than the diameter D <b> 2 of the mortar hole 66, and is formed larger than the diameter D <b> 1 of the reduced diameter portion 78 of the through hole 72. The annular collar member 31 is attached to the outer peripheral surface of the lower collar 10. In the example shown in FIG. 9, an inner diameter of an annular flange member 31 is engaged with a truncated cone-shaped portion that connects the tip 20 of the lower collar 10 and the body 18, and the collar member 31 is attached to the lower collar 10. It is attached.

  When the heel member 31 is attached to the lower heel 10 and the lower heel 10 moves upward and the tablet 82 is discharged to the outside of the mortar hole 66, the heel member 31 is positioned near the lower surface 64 of the mortar 60. In the example shown in FIG. 9, the tablet 82 is discharged to the outside on the upper surface 62 side of the mortar 60, and at this time, the heel member 31 formed with a diameter larger than the through hole 72 of the mortar holding plate 2 is It arrange | positions so that it may adjoin to the lower surface 80 of this.

  FIG. 10 is a partial cross-sectional view showing still another modified example of the lower eyelid 10. FIG. 11 is a perspective view of the eaves member 31 shown in FIG. The collar member 31 is not limited to the example shown in FIG. 9. For example, as shown in FIGS. 10 and 11, the collar member 31 is formed in a hollow short cylindrical shape and has an inner diameter slightly larger than the tip 20 of the lower collar 10. And an outer diameter larger than the diameter D2 of the mortar hole 66 and smaller than the diameter D1 of the reduced diameter portion 78. In this case, with the upward movement of the lower punch 10, the flange member 31 is fitted into the through hole 72 from the lower surface 80 side and is disposed so as to be closer to the lower surface 64 of the mortar 60. The eaves member 31 may be placed on the upper end 26 of the body portion 18 of the lower eaves 10, or a eaves receiving portion that receives the eaves member 31 is formed on a part of the outer peripheral surface of the eaves tip 20 of the lower eaves 10. The hook member 31 may be placed on the hook receiving portion.

  According to the tableting machine 1 of the modification shown in FIGS. 9 to 11, as described with reference to FIG. 7, the air from the lower side to the inside of the mortar 66 with the upward movement of the lower punch 10. Can be supplied. Since the tablet 82 can be lifted from the chip surface 24 by this air flow, the adhesion of the tablet 82 to the chip surface 24 can be suppressed and the tableting trouble can be reduced. Moreover, the structure equivalent to the lower collar 10 of the shape shown in FIG. 7 can be acquired by the structure which attaches the collar member 31 to the lower collar 10 which has the conventional shape. That is, it is possible to provide a lower cost tableting machine 1 that can reduce tableting troubles with a simple configuration in which the conventional lower punch 10 is used as it is and only the hook member 31 of the present embodiment is added.

  As shown in FIGS. 9 to 11, a configuration in which a collar member 31, which is a member different from the lower collar 10, may be attached to the lower collar 10, or a collar shape that projects radially outward from the outer peripheral surface of the lower collar 10. May be formed integrally with the lower eyelid 10. When the eaves member 31 is provided as a separate member from the lower eaves 10, the material of the eaves member 31 is preferably a synthetic resin, and particularly preferably a thermosetting elastomer.

  Although the embodiment of the present invention has been described as above, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Tableting machine, 2 mortar holding board, 3 Upper punch guide, 4 Lower punch guide, 5 Upper preload roller, 6 Lower preload roller, 7 Upper main pressure roller, 8 Lower main pressure roller, 9 Scraper, 10 Lower punch, 12 , 42 Head, 14, 44 Flat part, 16, 46 Neck part, 18, 48 Body part, 20, 50 Tip, 22 Tip, 24 Tip face, 26 Upper end, 31 Needle member, 40 Upper collar, 54 Opposing face , 60 mortar, 62 upper surface, 64 lower surface, 66 mortar hole, 72 through hole, 76 mortar receiving portion, 78 reduced diameter portion, 80 lower surface, 81 raw material, 82 tablets.

Claims (5)

A mortar with a mortar formed;
An upper arm placed on the upper side of the mortar,
A tableting machine, comprising: a lower punch disposed on the lower side of the mortar, and compressing a raw material supplied to the mortar between the upper punch and the lower punch to form a tablet. ,
The lower punch compresses the air in the vicinity of the lower surface of the die in accordance with the upward movement for discharging the formed tablet to the outside of the die hole, and enters the inside of the die hole from the lower side. A tableting machine that supplies air and exerts a force in the direction of lifting from the lower punch on the tablet. The lower arm includes a trunk having a diameter larger than the diameter of the mortar, and a heel that fits into the mortar,
The tableting machine according to claim 1, wherein when the lower punch moves upward and the tablet is discharged to the outside of the mortar hole, the upper end of the barrel portion is located near the lower surface of the mortar. A through hole is formed, and includes a disk for holding the die inside the through hole;
The lower arm includes a trunk having a diameter larger than the diameter of the mortar, and a heel that fits into the mortar,
3. The tableting according to claim 1, wherein when the lower punch moves upward and the tablet is discharged to the outside of the mortar hole, the upper end of the body portion is located inside the through hole. Machine. Attached to the lower heel, comprising a heel member having a diameter larger than the diameter of the mortar hole,
The tableting machine according to claim 1, wherein when the lower punch moves upward and the tablet is discharged to the outside of the mortar hole, the punch member is located near the lower surface of the mortar. A mortar in which a mortar is formed; an upper arm placed on the upper side of the mortar; and a lower arm placed on the lower side of the mortar; A punch member used in a tableting machine that compresses between the lower punch and forms a tablet, and is formed with a diameter larger than the mortar hole,
When the lower punch moves upward while being attached to the lower punch and the tablet is discharged to the outside of the mortar hole, the air near the lower surface of the mortar is compressed in the vicinity of the lower surface of the mortar. And a wrinkle member that acts on the tablet in the direction of lifting from the lower wrinkle .

Images