JP2009000692A - Rotary type powder compression forming machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary type powder compression forming machine in which a turntable can be smoothly removed, and cleaning therein is facilitated. <P>SOLUTION: Disclosed is a rotary type powder compression forming machine equipped with: a frame; an erect shaft freely rotatively provided at the inside of the frame; a lower pestle holding part provided with a recessed part at the central part of the flat upper face, fitted to the erect shaft freely removably, and holding a plurality of lower pestles so as to be reciprocated up and down; an upper pestle holding part provided with a projecting part fitted to the recessed part in the lower pestle holding part at the central part of the lower face, positioned to the lower pestle holding part, fitted to the erect shaft freely removably, and holding a plurality of upper pestles so as to be reciprocated up and down; and a turntable provided with a mounting hole fitted with the projecting part in the upper pestle holding part at the central part, also provided with a plurality of through-holes packed with the powder to be compressed by the upper pestles and the lower pestles at prescribed intervals, and fitted into the frame so as to be sandwiched between the lower pestle holding part and the upper pestle holding part and rotated together with the erect shaft in a state where the projecting part is fitted to the mounting hole. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotary powder compression molding machine that compresses and manufactures powders made from raw materials such as tablets, foods, and electronic parts.

  Conventionally, for example, pharmaceutical tablets are produced by compressing powder as a raw material. A rotary powder compression molding machine for manufacturing such a tablet has a rotating disk, through holes formed at a predetermined interval in the circumferential direction of the rotating disk, and a tip can be inserted into the through hole. And a vertical shaft disposed for each through hole, an upper and lower roll for generating a compressive force on the flange, and a vertical shaft for rotating the rotating disk. When the upper and lower wrinkles pass between the upper and lower rolls, the powder filled in the through holes is compressed by the upper and lower wrinkles to form a tablet.

In such a rotary powder compression molding machine, in order to facilitate the cleaning of the inside of the machine, there is known a machine configured such that the rotating disk can be easily detached from the vertical shaft (for example, Patent Document 1). In the thing of this patent document 1, a rotating disc is pinched | interposed by the upper and lower discs which hold | maintain an up-and-down collar, and a meshing clutch groove | channel is each provided in the opposing surface of a rotating disc and an up-and-down disc, and those meshing clutches are provided. By engaging the groove, the driving force of the vertical shaft can be transmitted to the rotating disk, and the rotating disk and the upper and lower disks can be easily separated.
Japanese Unexamined Patent Publication No. Sho 63-188896

  By the way, with the above structure, the rotating disk and the lower disk are connected to each other by meshing clutch grooves provided on the downward surface of the rotating disk and the upward surface of the lower disk, respectively. Since the upper disk and the upper disk are connected by meshing clutch grooves provided on the upper surface of the rotating disk and the lower surface of the upper disk, respectively, the upper disk is lifted when the rotating disk is taken out of the machine. After that, it is necessary to lift the rotating disk further from the meshing clutch groove of the lower disk until the meshing clutch groove of the rotating disk is separated, and then take out the rotating disk to the outside. That is, when removing the rotating disk from the lower disk, the rotating disk has to be lifted upward like the upper disk. As a result, a dedicated instrument or device is required for the work of removing the turntable.

  Therefore, the present invention aims to eliminate such problems.

  That is, the rotary powder compression molding machine according to the present invention includes a frame, a vertical shaft that is rotatably provided in the frame, a concave portion in a central portion of a flat upper surface, and is detachably attached to the vertical shaft. A lower heel holding portion that holds the lower heel so that it can reciprocate up and down, and a convex portion that fits into the concave portion of the lower heel holding portion at the central portion of the lower surface, is positioned on the lower heel holding portion and can be detached from the vertical shaft A powder that has an upper collar holding portion that holds a plurality of upper collars so as to be able to reciprocate up and down, and a mounting hole in which a convex portion of the upper collar holding section fits in a central portion, and is compressed by the upper collar and the lower collar. A plurality of through-holes filled with the body are provided at predetermined intervals, and are inserted into the mounting holes so that the projections fit into the mounting holes and sandwiched between the lower and upper eyelid holding parts and rotate together with the vertical shaft. Characterized by comprising a turntable to be attached .

  According to such a configuration, the turntable is detachably attached by being sandwiched between the lower heel holding portion and the upper heel holding portion that are detachably attached to the standing shaft. And since the turntable is sandwiched by the convex part of the upper eyelid holding part fitted in the concave part provided in the lower eyelid holding part, the convex part of the upper eyelid holding part is pulled out from the concave part of the lower eyelid holding part, It is possible to move the rotating disk from between the upper and lower eyelid holding parts by simply lifting the rotating disk upward on the flat upper surface of the lower eyelid holding part and more than the tip length of the lower eyelid. . Therefore, the work for removing the turntable is facilitated.

  In order to make it possible to easily remove the upper collar holding portion from the vertical shaft, a lower shaft member that is detachably attached to the vertical shaft and has a screw hole at its upper end is provided. The upper hole is provided with a through hole that exposes the upper end portion of the inner portion of the recess in the center of the recess, the upper collar holding portion includes a through hole with a stepped portion in the center, and a male screw member that fits into the screw hole of the lower shaft member. It is preferable that the shaft member biases the stepped portion of the through hole with the stepped portion so that the upper rod holding portion is biased toward the lower rod holding portion side.

  In order to strengthen the connection between the upper collar holding portion and the vertical shaft, a taper connection mechanism is provided between the upper end portion of the lower shaft member and the stepped through hole of the upper collar holding portion. Is preferred. As such a taper connection mechanism, the taper connection mechanism includes a first connection member having a taper surface on the inside and a second connection member having a taper surface on the outside, and the second connection member is provided on the first connection member. There is one that presses down with an upper shaft member and connects the upright shaft and the upper collar holding portion.

  Note that the powder in the present invention is an aggregate of minute solids, and includes an aggregate of particles such as so-called granules and an aggregate of powder having a shape smaller than the granules.

  The present invention is configured as described above, and the convex portion of the upper heel holding portion is fitted into the concave portion provided in the lower heel holding portion, and the turntable is formed by the upper heel holding portion and the lower heel holding portion. Because it is sandwiched, simply pull out the convex part of the upper heel holding part from the concave part of the lower heel holding part, and lift the rotating disk on the flat upper surface of the lower heel holding part to lift upwards more than the tip length of the lower heel. The board can be moved between the upper and lower eyelid holding parts, and the rotating board can be easily removed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  A rotary powder compression molding machine (hereinafter referred to as a molding machine) of this embodiment shown in FIG. 1 is a single disc whose front and back surfaces are substantially flat on a vertical shaft 2 that is rotatably provided in a frame 1. A rotating disc 3 made of is sandwiched between a lower heel holding portion 4 and an upper heel holding portion 5 so as to be horizontally rotatable. The molding machine has basically the same structure as that known in the art having the rotating disk 3 and operates in the same manner, and an upper platen 11 and a lower platen 13 described later use a tablet or food material. The powder is compressed into a shape of a molded product. Therefore, the basic structure other than the characteristic structure of the present invention is a minimum description.

  The vertical shaft 2 of this embodiment is hollow, and a pipe for passing control oil and compressed air for controlling connection with the joint portion 6 is incorporated therein. The vertical shaft 2 and the lower rod holding part 4 can be detachably connected via a joint part 6 provided with a coupling operated by control oil. The vertical shaft 2 is driven and rotated by the electric motor 29.

  The turntable 3 is formed with a plurality of through holes 7 at predetermined intervals in the circumferential direction in a portion close to the outer peripheral portion. These through-holes 7 are filled with the powder of the raw material of the molded product, and the tip portions of the upper punch 11 and the lower punch 13 can be inserted between the upper roll 30 and the lower roll 31. By passing, the powder filled in the through hole 7 is compressed and formed into a molded product.

  A mounting hole 8 into which a convex portion 17 of the upper collar holding portion 5 described later is fitted is formed in the central portion of the rotating disk 3. In such a rotating disk 3, a pin hole 10 for attaching a first positioning pin 9 for alignment with the upper collar holding portion 5 is provided in the vicinity of the attachment hole 8. That is, in the state in which the turntable 3 and the upper collar holding portion 5 are incorporated in the frame 1, the first positioning pins 9 position each other so that the center of the through hole 7 coincides with the axis of the upper collar 11. Is determined.

  The lower heel holding portion 4 has a flat upper surface 4 a and is fixed to the joint portion 6 and the lower shaft member 12 fixed to the joint portion 6. The lower collar holding portion 4 holds the lower collar 13 so as to be able to reciprocate up and down at a predetermined interval in the circumferential direction in a portion close to the outer peripheral portion. A concave portion 14 is provided in the central portion of the lower collar holding portion 4, and a through hole 16 that exposes the upper end portion 15 of the lower shaft member 12 in the concave portion 14 is provided in the center of the concave portion 14. The diameter of the recess 14 is substantially the same as the diameter of the mounting hole 8 of the turntable 3.

  The lower shaft member 12 substantially functions as the upper end of the upright shaft 2, and the upper end portion 15 has a smaller diameter than other portions. When the lower shaft member 12 is assembled together with the lower collar holding portion 4, the upper end portion 15 is formed to have a length that does not protrude upward from the concave portion 14, and a female screw hole 28 is formed. It is. Therefore, when the lower shaft member 12 is assembled together with the lower collar holding portion 4, the upper end portion 15 is exposed in the recess 14 through the through hole 16 and protrudes upward from the recess 14. There is nothing. In the periphery of the upper end portion 15, the upper surface with which the lower surface of the convex portion 17 of the upper collar holding portion 5 contacts is formed so as to be flush with the bottom surface of the concave portion 14 when assembled.

  The upper heel holding portion 5 includes a convex portion 17 that fits into the concave portion 14 of the lower heel holding portion 4 through the mounting hole 8 of the rotating disk 3 at the center portion of the lower surface thereof, and the periphery of the upper heel holding portion 5 is close to the outer peripheral portion. The upper collar 11 is held so as to be able to reciprocate up and down at a predetermined interval in the direction. For this purpose, the upper collar holder 5 is positioned and arranged with respect to the lower collar holder 4 by the second positioning pin 18 so that the axis of the lower collar 13 and the axis of the upper collar 11 coincide. The In addition, a through hole 19 with a stepped portion is provided in the central portion of the upper collar member 5. The stepped through-hole 19 includes a stepped portion 20 at an intermediate portion in the height direction, and the upper shaft member 21 engages with the stepped portion 20. The lower end portion 22 of the upper shaft member 21 has a small diameter, a male screw member 23 extends downward from the lower end portion 22, and the upper end portion 24 is configured to engage a lifting jig.

  In such a configuration, the turntable 3 releases the lower heel holding portion 4, the upper heel holding portion 5, the joint portion 6, the lower shaft member 12, the upper shaft by releasing the connection with the standing shaft 2 at the joint portion 6. Along with the member 21, the upper rod 11, the lower rod 13, and the like, it can be taken out of the frame 1. That is, the turntable 3 forms one assembly module with these components.

  Specifically, first, the lower heel holding portion 4 is fixed to the lower shaft member 12 connected to the joint portion 6. In this state, positioning is performed by the second positioning pin 18 attached to the lower heel holding portion 4, and the rotating disk 3 is fixed to the flat upper surface 4 a of the lower heel holding portion 4. As a result, the mounting hole 8 of the turntable 3 and the concave portion 14 of the lower heel holding portion 4 overlap each other, and the depth of the concave portion 14 becomes substantially deep. The upper end 15 of the lower shaft member 12 is exposed inside the recess 14.

  Next, the upper end portion 15 of the lower shaft member 12 is sequentially covered with the first connection member 25 and the second connection member 26 constituting the taper connection mechanism. At the same time, a cylindrical member 27 for pressing the second connecting member 26 is fixed to the lower end portion 22 of the upper shaft member 21 through a bolt (not shown) in the mounting hole 27a. The first connecting member 25 has a cylindrical shape and has a tapered surface on the inside thereof. On the other hand, the second connecting member 26 has a cylindrical shape whose outer diameter is smaller than that of the first connecting member 25 and has a tapered surface on the outer side thereof. Then, the taper surface of the second connection member 26 is brought into contact with the taper surface of the first connection member 25 and assembled. After setting the first connection member 25 and the second connection member 26 in this way, a cylindrical member 27 having substantially the same diameter as the second connection member 26 is placed on the second connection member 26. As a result, the upper end of the cylindrical member 27 is positioned above the upper surface of the upper end portion 15 of the lower eyelid holding portion 4.

  The upper eyelid holding portion 5 is assembled to the assembly of the lower eyelid holding portion 4, the turntable 3 and the lower shaft member 6 assembled as described above. Prior to assembly, the upper shaft member 21 is attached to the stepped through hole 19 of the upper collar holder 5 so that it cannot be extracted and is rotatable. In this way, the convex portion 17 of the upper heel holding portion 5 assembled with the upper shaft member 21 is fitted into the concave portion 14 of the lower heel holding portion 4 through the mounting hole 8 of the rotating disk 3. In this case, the upper heel holding portion 5 is positioned and mounted on the rotating disk 3 and thus the lower heel holding portion 4 by the first positioning pins 9.

  Next, since the male screw member 23 at the tip of the upper shaft member 21 contacts the upper end portion 15 of the lower shaft member 6, the upper shaft member 21 is rotated so that the male screw member 23 is inserted into the female screw hole of the upper end portion 15. Tighten to 28. Then, by further tightening, the upper shaft member 21 biases the stepped portion 20 of the upper collar holding portion 5 downward. Almost simultaneously with the start of the biasing, the lower end portion 22 of the upper shaft member 21 comes into contact with the cylindrical member 27, and the male screw member 23 is further tightened into the female screw hole 28. Press down. Thereby, the cylindrical member 27 pushes down the second connection member 26, and the first connection member 25 and the second connection member 26 are firmly connected.

  As described above, when the second connecting member 26 is pushed down, the second connecting member 26 comes into close contact with the upper end portion 15 of the lower shaft member 6 and the second connecting member 26 comes into close contact with the first connecting member 25. The first connection member 25 is in close contact with the stepped through hole 19 of the upper collar holding unit 5. Therefore, the upper hook holding portion 5 is biased by the upper shaft member 21 against the lower hook holding portion 4 and connected to the lower hook holding portion 4, and from the first connection member 25 and the second connection member 26. It connects with the lower shaft member 12 by the taper connection mechanism which becomes.

  Therefore, the turntable 3 disposed between the lower heel holding portion 4 and the upper heel holding portion 5 can be sandwiched and fixed between the lower heel holding portion 4 and the upper heel holding portion 5. In addition, in this case, since the taper connection mechanism is adopted, the connection between the upper collar holding portion 5 and the lower shaft member 12, and thus the vertical shaft 2 is made strong without increasing the space for connection. can do.

  The assembly module including the turntable 3, the lower rod holding portion 4 and the upper rod holding portion 5 is detachably connected to the vertical shaft 2 by the joint portion 6. When removing, the function of the joint portion 6 is achieved. After that, the upper end portion 24 of the upper shaft member 21 is connected to a dedicated or general-purpose lifting device and pulled up to be separated from the vertical shaft 2. After the assembly module is separated from the vertical shaft 2 in this way, the upper shaft member 21 is rotated outside the machine to loosen the male screw member 23, and the upper collar holding portion 5, the upper collar 11 and the upper shaft member 21 are collectively moved. Then, it is separated from the turntable 3 and the lower eyelid holding part 4. Thereby, the turntable 3 is released from the state of being sandwiched between the upper eyelid holding part 5 and the lower eyelid holding part 4.

  Thus, by separating the upper collar holding portion 5 in which the upper collar 11 and the upper shaft member 21 are incorporated, there is no portion below the lower surface of the rotating disk 3 below the lower surface. Therefore, the rotating disk 3 is lifted upward on the flat upper surface 4a of the lower eyelid holding part 4 more than the length of the lower edge of the lower eyelid 13, in other words, only by removing the lower edge of the lower eyelid 13 from the through hole 7, Can be moved from between the upper eyelid holding portion 5 and the lower eyelid holding portion 4. For this reason, the turntable 3 can be easily removed, and cleaning and maintenance inspection can be performed quickly. In the case of the rotating disk 3 having a relatively small diameter, it is possible to remove the rotating disk 3 by sliding the rotating disk 3 in a state where the upper heel holding part 5 is lifted. Can do.

  In the above description, the case where the assembly module including the turntable 3, the lower heel holding portion 4 and the upper heel holding portion 5 is taken out of the machine has been described. However, the upper heel holding portion 5 is held by the upper heel 11 Then, it may be configured such that it is lifted in the machine and the turntable 3 is removed. In this case, a lifting mechanism may be installed at the upper part in the frame 1.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

Sectional drawing which shows the schematic whole structure of embodiment of this invention. Sectional drawing which shows the structure of the principal part of the embodiment. Sectional drawing which decomposes | disassembles and shows the structure of the principal part of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Vertical shaft 3 ... Turntable 4 ... Lower collar holding part 4a ... Upper surface 5 ... Upper collar holding part 7 ... Through hole 8 ... Mounting hole 11 ... Upper collar 13 ... Lower collar 14 ... Concave part 17 ... Convex part

Claims (4)

Frame,
A vertical shaft rotatably provided in the frame;
A lower heel holding portion that has a recess in the central portion of the flat upper surface and is detachably attached to the vertical shaft and holds a plurality of lower heels so as to be able to reciprocate up and down;
An upper collar that has a convex portion that fits into the concave portion of the lower collar holder at the center of the lower surface, and that is positioned with respect to the lower collar holder and is detachably attached to the vertical shaft and holds a plurality of upper collars capable of reciprocating up and down. A holding part;
Provided at the center portion with a mounting hole into which the convex portion of the upper collar holding portion fits, and with a plurality of through holes filled with powder compressed by the upper collar and the lower collar at predetermined intervals, the convex portion on the mounting hole A rotary powder compression molding machine comprising: a rotating plate that is sandwiched between a lower and upper heel holding portion and is mounted in a frame so as to rotate together with a vertical shaft in a state where the heel is fitted. A lower shaft member that is removably attached to the vertical shaft and has a screw hole at its upper end,
The lower collar holding portion has a through hole at the center of the recess that exposes the upper end of the lower shaft member in the recess,
The upper collar holding part has a stepped through hole in the center,
The upper shaft member provided with a male screw member that fits into the screw hole of the lower shaft member urges the step portion of the through hole with the step portion to urge the upper collar holding portion toward the lower collar holding portion side. 2. The rotary powder compression molding machine according to 1.   The rotary powder compression molding machine according to claim 1 or 2, wherein a taper connection mechanism is provided between the upper end portion of the lower shaft member and the stepped through hole of the upper collar holding portion.   The taper connection mechanism comprises a first connection member having a taper surface on the inside and a second connection member having a taper surface on the outside, and the second connection member is pressed against the first connection member by an upper shaft member, The rotary powder compression molding machine according to claim 3, wherein the rotary powder compression molding machine is connected to the upper heel holder.

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