JP5693255B2 - Powder compression molding machine and method for producing molded product - Google Patents

Description

  The present invention relates to a powder compression molding machine for compressing powder to form tablets, foods, electronic parts, and the like, and a method for producing a molded product using such a powder compression molding machine.

  Conventionally, as a powder compression molding machine for compressing powder to form tablets, foods, electronic parts, etc., a table provided with at least one mortar hole in the internal space, and a mortar above and below the mortar hole 2. Description of the Related Art Widely adopted are an upper heel and a lower heel that are held in a hole so as to be movable up and down, a powder filled in a mortar hole, and the powder compressed in the mortar hole.

  In such a powder compression molding machine, a large force is applied to the upper and lower eyelids during compression molding. Therefore, when the tips of the upper and lower eyelids come into contact with each other, the tip of the eyelid is damaged or deformed. There is a risk of Therefore, a powder compression molding machine that has been widely used in the past is configured such that the upper and lower eyelids do not contact each other during compression molding, and the pressing surfaces of the upper and lower eyelids are substantially horizontal. On the other hand, since the inner peripheral surface of the mortar hole is formed in the vertical direction, there is contact between the pressing surface of the upper and lower heels and the inner peripheral surface of the mortar hole, so compression molding of a spherical tablet or an ellipsoidal tablet Was impossible. However, a powder compression molding machine capable of compression molding a spherical tablet or an ellipsoidal tablet has been desired for the purpose of improving swallowability.

  As an example of such a powder compression molding machine, a molding groove is provided on the inner peripheral surface of a space filled with powder, the die is divided by a plane passing through the molding groove, and each of the divided die is vertically moved. The thing of the aspect which can move is considered (for example, refer patent document 1).

  However, in a powder compression molding machine that has been widely used in the past, a die having a mortar hole is integrally provided as a whole, and a table holding such a mortar can be rotated around, for example, an axis. However, in the configuration described in Patent Document 1, it is necessary to newly provide a mechanism for allowing each of the upper and lower divided dies to move up and down. Another problem is that the mechanism is complicated due to a large number of points.

International Publication WO2010 / 027069 Pamphlet

  The present invention focuses on the above points, and an object thereof is to realize a powder compression molding machine capable of molding a spherical tablet or an ellipsoidal tablet with a simple configuration.

  That is, one of the powder compression molding machines according to the present invention includes a table in which at least one mortar hole is provided in the internal space, and an upper and lower ridges that are held so as to be vertically slidable above and below the mortar hole. A powder compression molding machine that fills powder in a mortar and compresses the powder in the mortar, and the mortar is formed with a cylindrical center hole and a terminal end of the center hole. A pressing surface for compressing the powder between the upper punch and the lower punch while being able to slide in the central hole of the mortar hole. A center rod having a surface and a center rod insertion hole provided on the outer periphery of the center rod and capable of sliding forward and backward is provided at the center and can be a surface continuous with the pressing surface during compression molding. An outer flange having a molding surface, and the molding surface of the mortar hole becomes a continuous surface with the pressing surface of the lower jaw during compression molding. It is characterized by capable.

In addition, another one of the powder compression molding machines according to the present invention includes a table in which at least one mortar hole is provided in the internal space, an upper punch that is slidably moved vertically above and below the mortar hole, and A powder compression molding machine comprising a lower punch, filling powder into a mortar hole, and compressing and molding the powder in the mortar hole, wherein the mortar hole has a cylindrical central hole and the central hole A center surface having a pressing surface for compressing powder between the lower surface and the upper surface. An outer flange having a molding surface that is provided on the outer periphery and has a molding surface that can be a continuous surface with the pressing surface at the time of compression molding, and has a central collar insertion hole in which the central collar can slide forward and backward. The molding surface of the mortar hole can be a surface continuous with the pressing surface of the upper collar during compression molding. The powder compression molding machine according to the present invention includes at least one mortar hole provided in the table, and an upper and lower ridges that are held so as to be vertically slidable above and below the mortar hole, A powder compression molding machine for compressing powder using an upper punch and a lower punch, wherein the lower punch is slidable in the mortar and has a pressing surface for compressing the powder. A center rod and an outer rod having a molding surface that is provided on the outer periphery of the center rod and has a center rod insertion hole that allows the center rod to slide forward and backward at the center and can be a continuous surface with the pressing surface. And the tip of the lower punch comprising the center hole penetrating up and down the table, a molding surface formed on the peripheral edge of the lower surface side of the center hole, and the outer collar and the central collar It may be provided with a scissors tip insertion hole for inserting the.

  If it is such, even if it does not divide the table or mortar having a mortar and make each movable up and down, the mortar forming surface of the mortar and the forming surface of the outer casing that form a whole Can be used to mold the outer periphery of the powder as a product, so many of the parts of the conventional powder compression molding machine can be used to make the mechanism more complex, increase the number of parts, and increase the maintenance effort associated with it. Spherical tablets or ellipsoidal tablets can be formed while suppressing the above.

  In the present invention, the “mortar hole” is a concept including both a mortar hole drilled in a mortar embedded in a table and a mortar hole directly drilled in a table. Further, the “continuous surface” does not necessarily need to be flush with each other, and even if there is a slight difference, the “continuous surface” is the “continuous surface” of the present invention as long as it is within the allowable range as a product. In addition, “powder” is a concept indicating an aggregate of minute individuals, and includes so-called granules and powders having a shape smaller than a fluid.

As an example of a configuration for realizing such a powder compression molding machine by a minimum design change with respect to a conventional powder compression molding machine, the outer casing has a holder for holding the central basket slidably, Examples include a tip that is attached to the tip of the holder and has the forming surface at the tip, and a connection member for connecting the holder and the tip. That is, the powder compression molding machine according to the present invention includes at least one mortar hole provided in the table, and an upper ridge and a lower ridge that are held slidably up and down above the mortar hole, A powder compression molding machine for compressing and molding powder using an upper punch and a lower punch, wherein the mortar hole is formed in a central hole penetrating up and down the table and a peripheral portion on an end surface side of the central hole. A center ridge having a pressing surface for compressing powder while the upper or lower heel can slide in the center hole of the mortar hole, and the molding of the mortar hole An outer flange for pressing the peripheral edge of the surface, and the outer flange is provided on the outer periphery of the central rod and slidably holds the central rod, and is attached to the tip of the holder. A heel having a molding surface that can be a continuous surface with respect to the pressing surface of the central heel A connecting member for connecting the holder and the heel, and the molding surface of the mortar hole can be a continuous surface with the pressing surface of the lower or upper eyelid on the other side. Also good. The powder compression molding machine according to the present invention includes at least one mortar hole provided in the table, and an upper and lower ridges that are held so as to be slidable up and down above the mortar hole. A powder compression molding machine for compressing and molding powder using an upper punch and a lower punch, wherein the upper punch and the lower punch are slidable in the mortar and are pressed to compress the powder. A center rod having a surface, and an outer rod covering a side peripheral surface of the center rod,
The outer flange is a holder that holds the central rod slidably, and a molding surface that is attached to the tip of the holder and can be a continuous surface with respect to the pressing surface of the central rod at the tip. And a connecting member for connecting the holder and the tip, the tip surface of the outer collar in the upper collar and the tip surface of the outer collar in the lower collar in all or part It may be in contact.

  If the pressure for compressing the powder is applied only to the pressure receiving portion provided at the base end of the center rod, the configuration of the center rod is made common with the other rod, and Can be shared.

Furthermore, an urging means is provided between the holder of the outer casing and the tip of the outer casing in order to urge the holder and the tip of the holder away from each other. If it further has a drive means for driving in the direction toward the other hook, the holder and the hook tip are normally connected through the connecting member by the biasing force of the biasing means without rattling. When compressing the powder, when the holder is driven in the direction toward the other ridge, the heel tip receives this driving force and moves toward the mortar. Therefore, the compression is performed by appropriately setting the urging force of the urging means. It is possible to maintain a state where the tip of the outer casing hits the die without excessive pressure during molding. That is, the powder compression molding machine according to the present invention includes a guide rail for raising and lowering the outer casing, the outer casing includes a rolling element guided by the guide rail, and the rolling element is the guide rail. The outer casing may be driven in the vertical direction so that the outer casing presses the periphery of the molding surface of the mortar hole. In addition, the powder compression molding machine according to the present invention may be provided with an urging means for urging the holder and the heel in a direction separating from each other between the holder and the heel. And it is provided with at least one mortar hole provided in the table, and an upper heel and a lower heel that can be slidably moved up and down above the mortar hole, and using the upper ridge and the lower heel, A punch for a powder compression molding machine for compression molding is slidable in the mortar hole and has a central ridge having a pressing surface for compressing the powder, and an outer surface for pressing the peripheral edge of the mortar hole. A flange provided on the outer periphery of the central rod and holding the central rod so as to be slidable; and a tip portion that is continuous with the pressing surface of the central rod. Comprising a tip having a possible molding surface, a connecting member for connecting the holder and the tip, and a rolling element for driving in the vertical direction, and the holder between the holder and the tip And urging means for urging the tips in directions away from each other.

  Further, as a method for producing a molded product using such a powder compression molding machine, powder is filled in a mortar hole, and the powder is placed on the pressing surface of the central punch of the upper punch (or lower punch) and the lower punch. At the same time as compression between the pressing surface of (or upper punch), the powder pushed out of the space extending from the central hole in the advance and retreat direction of the upper punch and the lower punch, and the molding surface of the mortar hole and the outer The method of accommodating and compressing in the space between the molding surface of a bag is mentioned. According to such a method, when the powder in the center hole is compressed between the pressing surface of the center rod of the upper rod (or the lower rod) and the pressing surface of the lower rod (or the upper rod), Since the powder extruded from the hole to the outside of the space extending in the advancing and retreating direction of the upper punch and the lower punch is accommodated in the space between the molding surface of the mortar hole and the molding surface of the outer casing, it is compression molded. A spherical tablet or an ellipsoidal tablet can be easily formed without using a special mechanism for compressing the powder on the outer periphery.

  As one of the concrete methods for producing a molded product when the upper punch is provided with a central punch and an outer punch, after filling the powder in the mortar, the central punch and the outer punch of the upper punch are simultaneously lowered. There is a method in which the tip of the outer casing is struck against the mortar, and then the lower punch is raised to compress the powder.

  In addition, as another method of manufacturing a specific molded product when the upper punch has a central punch and an outer punch, after filling the powder into the mortar, the outer punch of the upper punch is first lowered. There is a method in which the tip of the outer punch is struck against the mortar, and then the lower punch is raised and the central punch of the upper punch is lowered to compress the powder.

In addition, as yet another specific method for producing a molded product when the upper punch is provided with a central punch and an outer punch, after filling the powder in the mortar, , Lower this and insert this central punch into the mortar, then strike the tip of the outer punch of the upper punch against the die, then raise the central and lower punches of the upper punch, A method of compressing and molding powder with a bag is mentioned. That is, at least one mortar hole provided in the table, and upper and lower ridges that are held so as to be slidable up and down above and below the mortar hole, the mortar hole penetrates up and down the table. A central hole having a center hole and a molding surface formed on a peripheral portion on the upper surface side of the center hole, wherein the upper punch has a pressing surface for compressing the powder in the mortar hole; Of a compression molded product by a powder compression molding machine having a molding surface that can be a continuous surface with respect to the pressing surface of the central rod at the tip. A manufacturing method, the step of filling powder into the mortar, the step of lowering the central punch and inserting the tip of the central punch into the mortar, and then lowering the outer punch And pressing the peripheral edge of the mortar hole, and pressing the outer flange against the peripheral edge of the mortar hole Raising the central punch and making the pressing surface of the central punch and the molding surface of the outer punch continuous, and raising the lower punch while pressing the outer punch against the periphery of the mortar A step of compressing powder in the mortar with the pressing surface of the central punch and the pressing surface of the lower punch, and a step of making the pressing surface of the lower punch and the molding surface of the mortar into a continuous surface, May be provided.

On the other hand, as one of the specific methods for producing a molded product when the lower punch has a central punch and an outer punch, the pressing surface of the lower punch, After filling the space formed by the side surface of the central punch insertion hole and the side surface of the mortar hole, lower the upper punch until the pressing surface of the upper punch becomes a surface continuous with the molding surface of the mortar hole, Then, there is a method in which the center rod of the lower rod is raised, the powder is compression molded between the central rod of the lower rod and the upper rod, and then the lower rod is lowered and the molded product is taken out. That is, at least one mortar hole provided in the table, and upper and lower ridges that are held so as to be slidable up and down above and below the mortar hole, the mortar hole penetrates up and down the table. A center hole and a molding surface formed at a peripheral edge on the lower surface side of the center hole, wherein the lower rod has a pressing surface for compressing the powder, and an outer covering the outer periphery of the center rod. A method for producing a compression molded product by a powder compression molding machine, wherein the outer collar has a molding surface that can be a continuous surface with respect to the pressing surface of the central collar at the tip. A step of raising the outer cage and inserting it into the mortar hole, pressing the peripheral edge of the lower surface side of the center hole by the outer jar, and then filling powder into the mortar and the outer cage And in the state where the outer punch is pressed against the periphery of the mortar hole, A step of making the pressing surface of the mortar and the molding surface of the mortar hole continuous, and in a state where the outer urn is pressed against the periphery of the mortar hole, the central ridge is raised and the pressing surface of the central ridge and the upper A step of compressing the powder in the mortar and the outer punch with the pressing surface of the punch, and a step of making the pressing surface of the central punch and the molding surface of the outer punch continuous. It may be.

As another method for producing a molded product when the lower punch has a central punch and an outer punch, the pressing surface of the lower punch, After filling the space formed by the side face of the center punch insertion hole and the side face of the mortar hole, the upper punch is pressed until the pressing surface of the upper punch reaches the center punch insertion hole of the outer punch Is then lowered, and then the center and upper ridges of the lower heel are raised, and the powder is compression molded between the central ridge and the upper ridge of the lower heel, and then the lower heel is lowered and the molded product is taken out. Can be mentioned. Furthermore, it comprises at least one mortar hole provided in the table, and an upper heel and a lower heel that are held so as to be slidable up and down above and below the mortar hole. A center rod having a pressing surface for compression and an outer rod covering the outer periphery of the central rod, and the outer rod can be a continuous surface at the tip portion with respect to the pressing surface of the central rod. A method for producing a compression molded product by a powder compression molding machine having a compact molding surface, the step of aligning the tip surface of the outer shell of the lower punch with the upper surface position of the mortar, and then in the outer shell of the lower punch Filling the powder;
Thereafter, the step of lowering the center rod on the upper rod and inserting it into the outer rod on the lower rod, the step of lowering the outer rod on the upper rod and pressing it on the front end surface of the outer rod on the lower rod, In a state where the outer collar on the upper collar is pressed against the outer collar on the lower collar, the central collar on the upper collar is raised, and the pressing surface of the central collar and the molding surface of the outer collar on the upper collar are continuous surfaces. And in a state where the outer rod on the upper rod is pressed against the outer rod on the lower rod, the central rod on the lower rod is raised and the pressing surface of the central rod and the pressing surface of the central rod on the upper rod You may provide the process of compressing powder, and the process which makes the pressing surface of the said lower collar and the molding surface of the outer casing in the said lower collar a continuous surface.

  ADVANTAGE OF THE INVENTION According to this invention, the powder compression molding machine which can shape | mold a spherical tablet or an ellipsoidal tablet with a simple structure is realizable.

1 is an overall front sectional view showing a powder compression molding machine according to a first embodiment of the present invention. Explanatory drawing which expand | deploys and shows the turntable which concerns on the same embodiment. The figure which shows the principal part of the powder compression molding machine which concerns on the same embodiment. The figure which expands and shows the principal part in FIG. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on 2nd embodiment of this invention. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on 3rd embodiment of this invention. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. The figure which shows the principal part of the powder compression molding machine which concerns on 4th embodiment of this invention. The figure which expands and shows the principal part in FIG. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. Operation | movement explanatory drawing of the powder compression molding machine which concerns on 5th embodiment of this invention. Operation | movement explanatory drawing of the powder compression molding machine which concerns on the same embodiment. The figure which shows the principal part of the powder compression molding machine which concerns on the other embodiment of this invention.

  A first embodiment of the present invention will be described below 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 provided with a rotary disk 3 as a table in a frame 1 through a vertical shaft 2 so as to be horizontally rotatable. 3, a plurality of dies 4 are provided at predetermined intervals, and upper and lower ridges 5 and 6 are held on the upper and lower sides of each mortar 4 so as to be slidable up and down. The molding machine compresses and molds the powder filled in the die 4 by passing the upper punch 5 and the lower punch 6 between the upper roll 7 and the lower roll 8.

  The turntable 3 includes an upper turntable portion 3a for holding an upper punch 5, a lower turntable portion 3b to which a mortar 4 is detachably attached and a lower turn 6 is held, and an upper turntable portion 3a and a lower turntable portion. And a shaft portion 3c arranged so as to be coupled to 3b. A guide rail 9y for raising and lowering a center rod 51, which will be described later, of the upper rod 5 and a guide rail 9x for raising and lowering an outer rod 52, which will be described later, of the upper rod 5 are provided on the upper part of the rotating disk 3. The guide rail 9y for raising and lowering the central rod 51 supports a pressure receiving portion 51b described later, and the guide rail 9x for raising and lowering the outer rod 52 supports a rolling element 56 described later. The shaft portion 3 c substantially functions as a part of the upright shaft 2 when the turntable 3 is connected to the upright shaft 2. The shaft portion 3c includes a hollow shaft main body 3ca, a ring mounting base 3cb that is attached to the lower end of the shaft main body 3ca and to which a locate ring 13 that is a restrained member of the coupling mechanism 15 described below is mounted, and And a lifting shaft 3cc for connecting the lifting device.

  Two pairs of the upper roll 7 and the lower roll 8 are provided for pre-compression and for main compression. In FIG. 1, the upper roll 7 and the lower roll 8 for pre-compression are illustrated, and the upper roll and the lower roll for main compression are not illustrated. And the upper roll 7 for precompression and this compression is attached to the exclusive attachment block.

  Among the explanations above, the frame 1, the vertical shaft 2, the rotating disk 3 and the lower rod 6, and further, a mechanism for guiding the upper and lower rods 5, 6, a mechanism for supplying powder, a mechanism for taking out a molded product, The mechanism for rotating the vertical shaft 2 may be basically the same as that well known in this field.

  Therefore, in this embodiment, the mortar 4 and the upper arm 5 have the following configurations.

  Specifically, the mortar 4 has a mortar hole 4a at the center thereof. The mortar hole 4a has a cylindrical center hole 4aa and a molding surface 4ab formed at the peripheral edge of the upper end of the center hole 4aa.

  The upper punch 5 is provided at the center and is slidable in the central hole 4a of the die 4 and has a pressing surface 51a for compressing the powder between the pressing surface 6a of the lower punch 6 and the upper punch 5. 51 and an outer casing 52 provided on the outer periphery of the center rod 51 and having a molding surface 54a which is a surface continuous with the pressing surface 51a during compression molding and for molding the outer peripheral portion of the powder. The outer collar 52 further includes a holder 53 that slidably supports the central collar 51 therein, a collar 54 that is attached to the tip of the holder 53 and has the molding surface 54a at the tip, and these A cap 55 that is a connecting member for connecting the holder 53 and the tip 54, a rolling element 56 that is provided on the outer surface of the holder 53 and contacts the guide rail 9x of the rotating disk 3, the holder 53 and the tip 54, a disc spring 57 serving as an urging means for urging the holder 53 and the flange 54 in a direction away from each other.

  The central punch 51 has substantially the same configuration as that known as a punch of this type of powder compression molding machine. More specifically, the pressure surface 51a is provided on the distal end side, and a pressure receiving portion 51b that receives pressure for compressing powder from the upper roll 7 is provided on the proximal end side, and the distal end side is the proximal end side. It has a small diameter compared to

  The holder 53 has a center rod insertion hole 53a through which the center rod 51 can slide and retreat.

  On the other hand, when the tip 54 reaches the lower end of the movable range, the tip of the tip 54 hits the die 4, and the center rod 51 has a center rod insertion hole 54 b in which the center rod 51 can slide forward and backward. Further, the tip 54 communicates with the center punch insertion hole 54b and the external space, and prevents powder from leaking from the gap between the tip 54 and the die 4 during compression molding. An air vent hole 54c is also provided. The molding surface 54a is formed at the peripheral edge of the lower end of the central collar insertion hole 54b. Here, the center rod insertion hole 53a of the holder 53 and the center rod insertion hole 54b of the tip 54 communicate with each other, and the center rod 51 slides inside these center rod insertion holes 53a and 54b. It is possible to advance and retreat. And the center collar insertion hole 54b of the said tip 54 functions as a center collar insertion hole in a claim.

  The cap 55 has a space in which the tip 54 can be accommodated, and a hole for allowing the tip 54 to pass through and exposing the tip 54 to the outside. In addition, a male screw is provided on the inner periphery of the base end portion, and the male screw is screwed to a female screw provided on the outer peripheral surface of the distal end portion of the holder 53 in a state in which the tip 54 is housed in the space. It has a configuration that can be connected to the tip 54.

  The rolling element 56 guides the holder 53 to move up and down by always contacting the guide rail 9x. That is, at the location where the guide rail 9x has an upward slope, the rolling element 56 receives the action from the guide rail and raises the holder 53. On the other hand, at the location where the guide rail 9x has a downward slope, the holder 53 is lowered together with the rolling elements 56 by the weight of the outer casing 52, and the rolling elements 56 are kept in contact with the guide rail 9x.

  The disc spring 57 is housed in the cap 55 with one surface facing the holder 53 and the other surface facing the tip 54, and these surfaces hit the holder 53 and the tip 54, respectively. In the state, an elastic force is applied so that the holder 53 and the tip 54 are separated from each other. The disc spring 57 presses the tip 54 of the outer flange 52 against the surface of the die 4 by its elastic biasing force.

  The tip 54 of the outer casing 52 approaches the surface of the die 4 of the rotating disk 3 by the guide rail 9x on which the rolling elements 56 are supported, and is pressed against the surface of the die 4 by using the elastic biasing force of the disc spring 57. The This prevents the powder from leaking onto the rotating disk 3 from the gap between the tip 54 and the die 4.

  Next, the operation of this compression molding machine will be described with reference to FIG. In addition, the code | symbol T1-T4 in the same figure has shown the phase. At the stage of passing through the guide plate 93 of the product take-out part, the upper collar 5 is located above the rotating disk surface 3a and farthest from the rotating disk surface 3a, and the lower collar 6 is located below the rotating disk surface 3a. It is held at a position closest to the turntable surface 3a.

  Next, the lower iron 6 moves to the powder filling portion by the rotation of the turntable 3 (T1). After the powder is filled into the mortar hole 4a in the powder filling portion, the lower iron 6 rides on the dispensing rail 92, so that the lower iron 6 slightly approaches the rotating disk surface 3a and is separated from the rotating disk surface 3a by a predetermined distance. Thus, a predetermined amount of powder is filled in the mortar hole 4a. By passing through the scraping plate 94 in this state (T2), the powder overflowing on the die 4 is scraped off. During this time, the upper collar 5 is held at a position farthest from the rotating disk surface 3a by the guide rails 9x and 9y. Thereafter, the upper rod 5 moves in a direction approaching the turntable surface 3 a by the guiding action of the upper rod lowering guide cam 96. Then, when the upper punch 5 and the lower punch 6 pass between the upper and lower pre-compression rolls 7 and 8 and between the upper and lower main compression rolls 7 and 8, the powder in the die 4 is compression-molded (T3). . After molding, the upper punch 5 is first separated upward from the turntable surface 3a by the guiding action of the upper guide raising guide cam 95, and then the lower punch 6 is pushed up by the push-up rail 91 to be a molded product in the die 4. Q is pushed onto the turntable 3 (T4). Thereafter, the product Q is guided onto a chute (not shown) by the guide action of the guide plate 93 and led out of the compression molding machine A. As described above, the predetermined product Q can be manufactured by repeatedly and continuously molding the powder repeatedly.

  In addition, in this embodiment, the upper collar 5 and the lower collar 6 perform the following operations during compression molding.

  First, from the state in which the powder is filled in the mortar hole 4a as shown in FIGS. 3 and 4, the central punch 51 and the outer punch 52 of the upper punch 5 are simultaneously lowered as shown in FIG. Hit the tip of the tip against the mortar 4. Thereafter, as shown in FIG. 6, the lower punch 6 is raised to a position where the pressing surface 6 a of the lower punch 6 is continuous with the molding surface 4 ab of the mortar hole 4, so that the pressing surface 51 a of the central punch 51 and the lower punch 6 At the same time as the powder is compressed between the pressing surface 6a, the powder protruding outside the space extending from the center hole 4aa of the mortar hole 4a in the advancing and retracting direction of the upper punch 5 and the lower punch 6 is formed into the outer punch 52. It is stored between the surface 54a and the molding surface 4ab of the mortar 4a, and the powder is compression molded. At this time, the pressure applied to the upper punch 5 by the upper roll 7 in order to compress the powder is received only by the pressure receiving portion 51 b at the base end of the central punch 51. Thereafter, as shown in FIG. 7, the upper punch 5 is raised and separated from the product Q such as a compressed tablet, and the lower punch 6 is also lifted to push the product Q such as a compressed tablet upward. That is, in this embodiment, after filling the powder into the mortar hole 4a, the central punch 51 and the outer punch 52 of the upper punch 5 are lowered at the same time so that the tip 54 of the outer punch 52 hits the die, and then the lower punch 6 is raised to compress the powder.

  As described above, according to the configuration of the powder compression molding machine according to the present embodiment, the entire die 4 is integrated, and the forming surface 4ab of the mortar 4a of the mortar 4 and the forming surface of the outer casing 52 are formed. 54a can be used to mold the outer periphery of the product Q. Therefore, the mechanism is complicated and the number of parts is increased by preparing a mechanism for dividing the die 4 so that each can be moved up and down. The product Q such as a spherical tablet or an ellipsoidal tablet can be molded while diverting many of the parts of the conventional powder compression molding machine without further incurring, and further suppressing the increase in maintenance labor associated therewith. .

  Further, the outer collar 52 has a holder 53 for slidably holding the central collar, a collar 54 attached to the tip of the holder 53 and having the molding surface at the tip, the holder 53 and the collar Since the embodiment having the cap 55 for connecting the tip 54 is adopted, the holder 53 of this embodiment can be obtained by making a slight design change to the holder for holding the rivet of the conventional powder compression molding machine. And common design with conventional powder compression molding machines.

  In addition, since the pressure for compressing the powder is applied only to the pressure receiving portion 51b provided at the base end portion of the central rod 51, the configuration of the central rod 51 is the same as that of a conventional powder compression molding machine. From this point, the design of the conventional powder compression molding machine can be shared.

  Furthermore, a disc spring 57 is provided between the holder 53 and the hook 54 of the outer rod 52 to bias the holder 53 and the hook 54 in a direction away from each other. Since the holder 53 functions as a driving means for driving the holder 53 in the direction toward the lower collar when the body is compression-molded, the holder 53 and the tip 54 are normally moved via the cap 55 by the biasing force of the disc spring 57. When the holder 53 is driven in the direction toward the lower punch 6 when the powder is compression molded, the tip 54 receives the driving force and moves toward the die 4 when the powder 53 is compressed. By appropriately setting the urging force, it is possible to maintain the state in which the tip 54 hits the die 4 without receiving excessive pressure during compression molding. Thereby, it is possible to prevent the powder from leaking from the gap between the die 4 and the tip 54 to the upper surface of the rotating disk 3.

  Next, a second embodiment of the present invention will be described below with reference to the drawings. In the following description, detailed description of portions having the same configuration as in the first embodiment is omitted.

  The powder compression molding machine in this embodiment has the same configuration as that of the first embodiment described above.

  In addition, in this embodiment, the upper eyelid 5 and the lower eyelid 6 perform operations different from those in the first embodiment as described below during compression molding.

  First, from the state where the powder is filled in the mortar hole as shown in FIG. 3 and FIG. 4, the outer rod 52 of the upper punch 5 is lowered as shown in FIG. 51a, the pressing surface 6a of the lower rod 6, the side surface of the center rod insertion hole 54b of the outer rod 52, and the space formed by the side surface of the mortar hole 4a. Then, as shown in FIG. 9, the lower punch 6 is raised until the pressing surface 6a of the lower punch 6 becomes a surface continuous with the molding surface 4ab of the mortar hole 4a, and the powder is transferred to the mortar hole 4a and the central punch insertion hole 54b. It is assumed that it is housed inside. Then, as shown in FIG. 6, the powder is compressed between the pressing surface 51a of the central punch 51 and the pressing surface 6a of the lower punch 6, and at the same time, the upper punch 5 and the lower punch 6 from the central hole 4aa of the mortar hole 4a. The powder protruding outside the space extending in the forward and backward direction is accommodated between the molding surface 54a of the outer casing 52 and the molding surface 4ab of the mortar 4a, and the powder is compression molded. Thereafter, as shown in FIG. 7, the upper punch 5 is raised and separated from the compressed tablet, etc., and the lower punch 6 is also lifted, and the compressed tablet is pushed upward. That is, in this embodiment, after filling the powder in the mortar hole 4a, the outer punch 51 of the upper punch 5 is first lowered, and the tip 54 of the outer punch 52 is struck against the die 4, and then the lower punch 6 is moved. At the same time, the center rod 51 of the upper rod 5 is lowered and the powder is compression-molded.

  Also by the configuration of the present embodiment, all the effects of the configuration according to the first embodiment described above can be obtained.

  In FIG. 9, the pressing surface 6a of the lower punch 6 and the molding surface 4aa of the mortar hole 4a are made continuous, and then the central punch 51 of the upper punch 5 is lowered. The center rod 51 of the upper rod 5 may be lowered before the molding surface 4aa of the hole 4a becomes a continuous surface.

  Furthermore, a third embodiment of the present invention will be described below with reference to the drawings. In the following description, detailed description of portions having the same configuration as in the first and second embodiments is omitted.

  The powder compression molding machine in this embodiment has the same configuration as that according to the first and second embodiments described above.

  In addition, in this embodiment, the upper and lower eyelids perform different operations from those in the first embodiment and the second embodiment as described below during compression molding.

  First, from the state in which the powder is filled in the mortar hole 4a as shown in FIG. 3 and FIG. 4, the central punch 51 of the upper punch 5 is lowered as shown in FIG. It is housed in a space formed by the surface 51a, the pressing surface 6a of the lower punch 6, and the side surface of the mortar 4a. Then, as shown in FIG. 11, the outer flange 52 of the upper punch 5 is lowered and hit against the die 4. Thereafter, as shown in FIG. 12, the central punch 51 is raised above the die 4 and the lower punch 6 is also raised, so that the powder is stored in the die hole 5a and the central punch insertion hole 54b. Then, as shown in FIG. 6, the powder is compressed between the pressing surface 51a of the central punch 51 and the pressing surface 6a of the lower punch 6, and at the same time, the upper punch 5 and the lower punch 6 from the central hole 4aa of the mortar hole 4a. The powder protruding outside the space extending in the forward and backward direction is accommodated between the molding surface 54a of the outer casing 52 and the molding surface 4ab of the mortar 4a, and the powder is compression molded. Thereafter, as shown in FIG. 7, the upper punch 5 is raised and separated from the compressed tablet, etc., and the lower punch 6 is also lifted, and the compressed tablet is pushed upward. That is, in this embodiment, after filling the pestle 4a with the powder, the central punch 51 of the upper punch 5 is first lowered and the central punch 51 is inserted into the mortar 4a. The tip 54 of the heel 52 is struck against the mortar 4, and then the center heel 51 and the lower heel 6 of the upper heel 5 are raised, and the powder is compression molded between the central heel 51 and the lower heel 6 of the upper heel 5. I am doing so.

  Also by the configuration of the present embodiment, all the effects of the configuration according to the first embodiment described above can be obtained.

  In FIG. 12, the lower collar 6 is raised after the pressing surface 51 a of the central collar 51 of the upper collar 5 and the molding surface 54 a of the outer collar 54 are made continuous, but the central collar 51 of the upper collar 5. Before the pressing surface 51a and the molding surface 54a of the outer collar 54 become a continuous surface, the lower collar 6 may start to rise.

  Next, a fourth embodiment of the present invention will be described below with reference to the drawings. In the following description, detailed description of portions having the same configurations as those of the first, second, and third embodiments is omitted.

  The powder compression molding machine in the present embodiment has a different configuration in the following points as compared to the first, second, and third embodiments described above.

  In the present embodiment, the upper collar 5 basically has a configuration equivalent to that well known in this field, and includes a pressing surface 5a at the lower end thereof. Further, as shown in FIG. 13, a guide rail 9 y for raising and lowering a center rod 61 (described later) of the lower rod 6 is provided at the lower part of the rotating disk 3, and a guide rail for moving an outer rod 62 (described later) of the lower rod 6. 9x is provided.

  On the other hand, as shown in FIG. 13, the lower rod 6 has a central rod 61 provided at the center and having a pressing surface 61 a for compressing powder between the upper rod 5 and an outer periphery of the central rod 61. And an outer casing 62 having a molding surface 64a which is continuous with the pressing surface 61a and is used for molding the outer periphery of the powder. The outer collar 62 includes a holder 63 that slidably supports the central collar 61, a collar 64 that is attached to the tip of the holder 63 and has the molding surface 64a at the tip, and these holders. 63 and a cap 65 for connecting the tip 64, a rolling element 66 provided on the outer surface of the holder 63 and contacting the guide rail 9x, and the holder 63 and the tip 64 located between the holder 63 and the tip 64 And a disc spring 67 as an urging means for urging the heel tips 64 in directions away from each other.

  The center rod 61 has a configuration substantially the same as that known as a rod of this type of powder compression molding machine. More specifically, the pressure surface 61a is provided on the distal end side, and a pressure receiving portion 61b that receives pressure for compressing powder from the lower roll 8 is provided on the proximal end side, and the distal end side is the proximal end side. It has a small diameter compared to

  The holder 63 has a center rod insertion hole 63a through which the center rod 61 can slide and retreat.

  On the other hand, when the tip 64 reaches the lower end of the movable range, the tip of the tip 64 hits the die 4, and the center rod 61 has a center rod insertion hole 64b through which the center rod 61 can slide and retreat. And the said molding surface 64a is formed in the peripheral part of the lower end of this center collar insertion hole 64b. Here, the center rod insertion hole 63a of the holder 63 and the center rod insertion hole 64b of the tip 64 communicate with each other, and the center rod 61 slides inside the center rod insertion holes 63a and 64b. It is possible to advance and retreat. And the center collar insertion hole 64b of the said tip 64 functions as a center collar insertion hole in a claim.

  The cap 65 has a space in which the tip 64 can be accommodated, and has a hole for allowing the tip 64 to pass through and exposing the tip 64 to the outside. In addition, a male screw is provided on the inner periphery of the base end portion, and the male screw is screwed to a female screw provided on the outer peripheral surface of the distal end portion of the holder 63 in a state in which the tip 64 is housed in the space. It has a configuration that can be connected to the tip 64.

  The rolling element 66 guides the holder 63 to move up and down by always contacting the guide rail 9x. That is, in the place where the guide rail 9x has an upward slope, the rolling element 66 receives the action from the guide rail 9x and raises the holder 63. On the other hand, at the location where the guide rail has a downward slope, the holder 63 is lowered together with the rolling elements 66 by the weight of the outer rod 52, and the rolling elements 66 are kept in contact with the guide rail 9x.

  The disc spring 67 is housed in the cap 65 with one surface facing the holder 63 and the other surface facing the tip 64, and these surfaces hit the holder 63 and the tip 64, respectively. In the state, an elastic force is applied so that the holder 63 and the tip 64 are separated.

  Further, as shown in FIG. 13, the mortar 4 has a cylindrical mortar hole 4a in the upper part thereof. The mortar hole 4a has a cylindrical center hole 4aa and a molding surface 4ab formed at the peripheral edge of the lower end of the center hole 4aa. At the bottom of the mortar 4, a tip insertion hole 4 b is provided so that the tip 64 can be moved inside.

  In addition, in this embodiment, the upper collar 5 and the lower collar 6 perform the following operations during compression molding.

  First, as shown in FIG. 14, in a state where the outer rod 62 of the lower rod 6 is raised until the tip 64 hits the die 4, the powder is pressed into the pressing surface 61 a of the central rod 61 and the center of the outer rod 62. The space formed by the side surface of the scissors insertion hole 64b and the side surface of the mortar hole 4a is filled. Then, the upper collar 5 is lowered until the pressing surface 5a of the upper collar 5 becomes a continuous surface with the molding surface 4ab of the mortar hole 4a as shown in FIG. Then, as shown in FIG. 16, the powder is compressed between the pressing surface 61a of the central punch 61 and the pressing surface 5a of the upper punch 5, and at the same time, from the central hole 4aa of the mortar hole 4a to the upper punch 5 and the lower punch 6 The powder protruding outside the space extended in the forward / backward direction is stored between the molding surface 64a of the outer casing 62 and the molding surface 4ab of the die hole 4a, and the powder is compression-molded. Thereafter, as shown in FIG. 17, the entire lower punch 6 is lowered and separated from the product Q such as a tablet that has been compression-molded. Thereafter, the product Q such as a tablet is collected by using wind pressure from an air shooter (not shown). That is, in the present embodiment, the pressing surface 61a of the center rod 61, the side surface of the center rod insertion hole 64b of the outer rod 62, and the side surface of the die hole 4a in a state where the outer rod 62 of the lower rod 6 is in contact with the die 4 After the powder is filled in the space formed by the above, the upper iron 5 is lowered until the pressing surface 5a of the upper iron 5 becomes a surface continuous with the molding surface 4ab of the mortar hole 4a, and then the central iron of the lower iron 6 61 is raised, and the powder is compression-molded between the center rod 61 and the upper rod 5 of the lower rod 6, and then the lower rod 6 is lowered to take out the product Q.

  Also by the configuration of the present embodiment, all the effects of the configuration according to the first embodiment described above can be obtained.

  Next, a fifth embodiment of the present invention will be described below with reference to the drawings. In the following description, detailed description of portions having the same configurations as those of the first, second, third, and fourth embodiments is omitted.

  The powder compression molding machine in the present embodiment has the same configuration as that according to the fourth embodiment described above.

  In this embodiment, the upper and lower eyelids perform the following operations during compression molding.

  First, as shown in FIG. 18, in a state where the outer rod 62 of the lower rod 6 is raised until the tip 64 hits the die, the powder is pressed into the pressing surface 61a of the central rod 61 and the central rod of the outer rod 62. The space formed by the side surface of the insertion hole 64b and the side surface of the mortar hole 4a is filled. Then, as shown in FIG. 19, the upper collar 5 is lowered into the center collar insertion hole 64 b of the outer collar 62, and the space is closed by the upper collar 5. Thereafter, as shown in FIG. 15, the upper collar 5 is raised until the pressing surface 5a of the upper collar 5 is continuous with the molding surface 4ab of the mortar hole 4a. Then, as shown in FIG. 16, the powder is compressed between the pressing surface 61a of the central punch 61 and the pressing surface 5a of the upper punch, and at the same time, the upper punch 5 and the lower punch 6 are moved from the central hole 4aa of the mortar hole 4a. The powder protruding outside the space extended in the forward / backward direction is stored between the molding surface 64a of the outer casing 62 and the molding surface 4ab of the die hole 4a, and the powder is compression-molded. Thereafter, as shown in FIG. 17, the entire lower punch 6 is lowered to be separated from a product Q such as a compression-molded tablet. Thereafter, the product Q such as a tablet is collected by using wind pressure from an air shooter (not shown). That is, in the present embodiment, the pressing surface 61a of the center rod 61, the side surface of the center rod insertion hole 64b of the outer rod 62, and the side surface of the die hole 4a in a state where the outer rod 62 of the lower rod 6 is in contact with the die 4 After the powder is filled into the space formed by the above, the upper rod is lowered until the pressing surface 5a of the upper rod 5 reaches the center rod insertion hole 64b of the outer rod 62 of the lower rod 6, and then the lower rod 6 The center rod 61 and the upper rod 5 are raised to compress the powder between the lower rod center rod 62 and the upper rod 5, and then the lower rod 6 is lowered to take out the product Q.

  Also by the configuration of the present embodiment, all the effects of the configuration according to the first embodiment described above can be obtained.

  The present invention is not limited to the embodiment described above.

  For example, the configuration of the center rod may be the same as that of the other rod in order to further share the members. That is, the axial length of the small diameter portion on the tip side of the center rod may be set to be the same as that of the other rod.

  Further, in the first to fifth embodiments described above, only one of the upper collar and the lower collar is provided with a central collar and an outer collar. However, as shown in FIG. Is provided with a center rod 51 and an outer rod 52 as shown in the first to third embodiments, and the lower rod 6 is also provided with a center rod 61 and an outer rod as shown in the fourth and fifth embodiments. A configuration including 52 may be employed. In this case, in the region defined by the pressing surfaces 51a and 61a of the center rods 51 and 61 of the upper rod 5 and the lower rod 6, and the molding surfaces 54a and 64a of the outer rods 52 and 62 of the upper rod 5 and the lower rod 6. Compress the powder. As a manufacturing method of a molded article having this configuration, the tip of the outer punch 62 of the lower punch 6 is aligned with the position of the upper surface of the die 4, and the powder is the pressing surface 61 a of the central punch 61 of the lower punch 6, and the lower punch 6. A space formed by the side surface of the center rod insertion hole 64b of the outer rod 62 and the side surface of the mortar hole 4a is filled, and the outer rod 52 of the upper rod 5 and the outer rod 62 of the lower rod 6 are abutted against each other. There is a method in which the powder filled with the pressing surface 51a of the center rod 51 of the upper rod 5 and the pressing surface 61a of the central rod 61 of the lower rod 6 is compression-molded. In this case, the powder may be compression-molded by the upper punch 5 and the lower punch 6 on the upper surface portion of the die 4 or in the die hole 4a. The position in the axial direction in which the powder compression molding is performed with the upper punch 5 and the lower punch 6 is not limited.

  Furthermore, in the above-described first to fifth embodiments, the rotary table as the table and the mortar are configured separately and the mortar is embedded in the rotary disk. However, the mortar hole is directly formed in the table. The present invention may be applied to a punched powder compression molding machine.

  The first to fifth embodiments described above are rotary powder compression molding machines, but may be vertical powder compression molding machines. If it is a vertical type powder compression molding machine, it becomes easy to control the position of the upper punch and the lower punch, for example, it becomes easy to make the pressing surface of the punch and the molding surface of the mortar hole continuous. .

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

3. Turntable (table)
4a ... Mortar hole 4aa ... Center hole 4ab ... Molding surface 5 ... Upper collar 51, 61 ... Central collar 52, 62 ... Outer collar 54a, 64a ... Molded surface 54b, 64b ... Central collar insertion hole

Claims (9)

And at least one die hole provided on the table (4a), and a upper punch (5) and the lower punch (6) which is vertically slidably movably held vertically of the die hole, the upper punch and the lower A powder compression molding machine that compresses powder using a punch ,
The die hole is provided with a vertically through-center hole of the table (4aa), the end face-side molding surface formed on the periphery of the central hole and (4ab),
The upper punch or the lower punch is a pressing surface for compressing the powder together with a slidable central bore of the die bore center punch (51, 61) having (51a, 61a), said die bore wherein and an outer punch for pressing the periphery of the molding surface (52, 62) of,
A holder (53, 63) provided on the outer periphery of the central rod for slidably holding the central rod, and attached to the tip of the holder, and the outer flange is attached to the pressing surface of the central rod. A tip (54, 64) having a molding surface (54a, 64a) that can be a continuous surface, and a connection member (55, 65) for connecting the holder and the tip,
A powder compression molding machine in which the molding surface (4ab) of the mortar hole can be a continuous surface with the pressing surface (51a, 61a) of the lower or upper collar of the other side . And at least one mortar hole (4a) provided on the table, and an upper ridge (5) and a lower ridge (6) that are held so as to be vertically slidable above and below the mortar hole. A powder compression molding machine that compresses powder using a punch,
A central punch (51, 61) having a pressing surface (51a, 61a) for compressing the powder while the upper punch and the lower punch are slidable in the mortar, and a side periphery of the central punch An outer covering (52, 62) covering the surface,
The outer rod is attached to the holders (53, 63) for holding the center rod so as to be slidable, and the tip of the holder, and the tip is continuous with the pressing surface of the center rod. A tip (54, 64) having a molding surface (54a, 64a) capable of connecting, and a connection member (55, 65) for connecting the holder and the tip,
A powder compression molding machine in which a front end surface of the outer casing of the upper casing and a front end surface of the outer casing of the lower casing are contacted in whole or in part. And at least one die hole provided on the table (4a), and a upper punch (5) and the lower punch (6) which is vertically slidably movably held vertically of the die hole, the upper punch and the lower A powder compression molding machine that compresses powder using a punch ,
Said lower punch is the pressing surface for compressing the powder with the inside die hole and can slide with core punch having a (61a) (61), is the core punch provided on the outer circumference of the core punch sliding moving retractable center punch inserting hole (63a, 64b) and an outer punch (62) having the pressing surface can be a continuous surface molding surface (64a) and having a central portion,
A center hole (4aa) through which the mortar hole penetrates in the vertical direction of the table, a molding surface (4ab) formed at a peripheral portion on the lower surface side of the center hole, and the lower punch A powder compression molding machine provided with a tip insertion hole (4b) through which the tip is inserted. The powder compression molding machine includes a guide rail (9x) for raising and lowering the outer casing,
The outer cage includes rolling elements (56, 66) guided by the guide rail,
The said rolling element is driven by the said guide rail, the said outer casing drives up and down, and the said outer casing presses the periphery of the said molding surface (4ab) of the said mortar hole. Powder compression molding machine. The powder compression molding machine according to any one of claims 1 to 4, further comprising urging means (57, 67) for urging the holder and the heel in a direction away from each other between the holder and the heel. And at least one mortar hole (4a) provided on the table, and an upper ridge (5) and a lower ridge (6) that are held so as to be vertically slidable above and below the mortar hole. A scissors for a powder compression molding machine that compresses powder using a scissors,
A center rod (51, 61) having a pressing surface (51a, 61a) for slidable in the mortar and compressing powder, and an outer rod (52 for pressing against the periphery of the mortar) 62)
The outer flange may be a surface continuous with the holder (53, 63) provided on the outer periphery of the central rod and slidably holding the central rod with respect to the pressing surface of the central rod. A tip (54, 64) having a possible molding surface (54a, 64a), a connection member (55, 65) for connecting the holder and the tip, and a rolling element (56) for driving in the vertical direction 66)
A punch for a powder compression molding machine, comprising biasing means (57, 67) for biasing the holder and the tip in a direction away from each other between the holder and the tip. And at least one mortar hole (4a) provided in the table, and an upper heel (5) and a lower ridge (6) which are held so as to be vertically slidable above and below the mortar hole,
The mortar hole includes a center hole (4aa) penetrating up and down the table, and a molding surface (4ab) formed on a peripheral portion on the upper surface side of the center hole,
The upper punch includes a central punch (51) having a pressing surface (51a) for compressing the powder in the mortar hole, and an outer punch (52) covering the outer periphery of the central punch,
The outer casing is a method of manufacturing a compression molded product by a powder compression molding machine provided with a molding surface (54a) capable of being a continuous surface with respect to the pressing surface of the central collar at the tip,
Filling the mortar with powder,
Thereafter, lowering the central punch and inserting the tip of the central punch into the mortar,
Then, lowering the outer punch and pressing the peripheral edge of the mortar hole,
In a state where the outer punch is pressed against the periphery of the mortar hole, the central punch is raised and the pressing surface of the central punch and the molding surface of the outer punch are made continuous.
In a state where the outer punch is pressed against the periphery of the mortar, the lower punch is raised, and the powder in the mortar is compressed with the pressing surface of the central punch and the pressing surface of the lower punch,
A method for producing a compression molded product by a powder compression molding machine, comprising: a step of forming a pressing surface of the lower punch and a molding surface of the mortar hole as a continuous surface. And at least one mortar hole (4a) provided in the table, and an upper heel (5) and a lower ridge (6) which are held so as to be vertically slidable above and below the mortar hole,
The mortar hole includes a center hole (4aa) penetrating up and down the table, and a molding surface (4ab) formed at the peripheral edge of the lower surface side of the center hole,
The lower rod includes a central rod (61) having a pressing surface (61a) for compressing the powder, and an outer rod (62) covering the outer periphery of the central rod.
The outer casing is a method for producing a compression molded product by a powder compression molding machine provided with a molding surface (64a) capable of being a continuous surface with respect to the pressing surface of the central collar at the tip,
Raising the outer casing and inserting it into the mortar hole, and pressing the peripheral edge on the lower surface side of the central hole with the outer casing;
Then, filling the powder into the mortar and the outer casing,
In a state where the outer punch is pressed against the periphery of the mortar hole, the upper punch is raised to make the pressing surface of the upper punch and the molding surface of the mortar hole continuous,
With the outer punch pressed against the periphery of the mortar hole, the central punch is raised and the powder in the mortar and outer punch is compressed with the pressing surface of the central punch and the pressing surface of the upper punch. And a process of
A method for producing a compression molded product by a powder compression molding machine, comprising: a step of making the pressing surface of the central collar and the molding surface of the outer collar a continuous surface. And at least one mortar hole (4a) provided in the table, and an upper heel (5) and a lower ridge (6) which are held so as to be vertically slidable above and below the mortar hole,
The upper rod and the lower rod include a central rod (51, 61) having a pressing surface (51a, 61a) for compressing the powder, and an outer rod (52, 62) covering the outer periphery of the central rod. Prepared,
A method of manufacturing a compression molded product by a powder compression molding machine, wherein the outer casing has a molding surface (54a, 64a) capable of being a continuous surface with respect to the pressing surface of the central collar at the tip. ,
The step of aligning the tip surface of the outer cage of the lower arm with the upper surface position of the mortar;
Then, filling the powder into the outer casing of the lower casing,
Thereafter, the step of lowering the center rod on the upper rod and inserting it into the outer rod on the lower rod;
Lowering the outer heel of the upper heel and pressing the tip of the outer heel of the lower heel;
In a state where the outer collar on the upper collar is pressed against the outer collar on the lower collar, the central collar on the upper collar is raised, and the pressing surface of the central collar and the molding surface of the outer collar on the upper collar are continuous surfaces. And a process of
With the outer rod on the upper rod pressed against the outer rod on the lower rod, the central rod on the lower rod is raised and the powder is compressed by the pressing surface of the central rod and the pressing surface of the central rod on the upper rod. And a process of
A method for producing a compression molded product by a powder compression molding machine, comprising: a step of forming a pressing surface of the lower collar and a molding surface of the outer casing of the lower collar as a continuous surface.

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