Abstract: This invention provides a powder compression molding machine including: upper punches and lower punches disposed to face with each other along one central axis; die holes allowing tips of the upper punches and the lower punches to be respectively inserted thereinto, the upper punches and the lower punches being shifted to approach each other with the tips thereof being inserted in the corresponding die holes, so that a powder material filled in the die holes is compressed and molded; and powder lubricant spraying means for spraying a powder lubricant toward the die holes before the powder material is filled therein, wherein the powder lubricant spraying means includes: a downward spray nozzle that sprays the powder lubricant toward the die holes; a powder lubricant retrieving mechanism that retrieves a superfluous powder lubricant out of the powder lubricant sprayed from the powder lubricant spraying means; a charging device that electrostatically charges the powder lubricant sprayed from the downward spray n

Abstract: This invention provides a punch comprising: a center punch and an outer punch surrounding the outer periphery of the center punch, both of which being slidable and capable of compressing; and relative position restriction means for restricting a relative position of the center and outer punches, the relative position restriction means being configured to restrict a first position in which a punch tip of the center punch is protruded from a punch tip of the outer punch and a second position in which the punch tip of the center punch is substantially coincident with the punch tip of the outer punch, and being configured to fail to restrict a third position in which the punch tip of the center punch is retracted in the punch tip of the outer punch, as well as a rotary compression molding machine provided with the double-structured punch.

Abstract: In a rotary powder compression molding machine in which a rotary turret is provided within a frame via a vertical shaft so as to be horizontally rotatable, a plurality of dies are provided in the rotary turret at a predetermined interval, an upper punch and a lower punch are held kept above and below each of the dies so as to be vertically slidable, a powder filled in the die is compressed and molded by putting the upper punch and the lower punch in which punch tips are inserted into the dies through a portion between an upper roll and a lower roll, a joint apparatus coupling the vertical shaft and the rotary turret so as to be able to detach the rotary turret from the vertical shaft, comprises a coupling mechanism coupling the vertical shaft and the rotary turret while maintaining a state in which the vertical shaft and the rotary turret are constrained in an axial direction of the vertical shaft with each other, and canceling the coupling between the vertical shaft and the rotary turret by canceling the con

Abstract: An compressive molding machine for powder material comprises an upper punch dust-proof unit 6 that surrounds a sliding part 31 of an upper punch 3 and that has expandable elasticity, and an upper seal that is arranged at a lower end portion of an upper punch holding bore 12x holding the upper punch 3 on a rotary turret 1 and that holds the upper punch 3 slidably and air-tightly, and is further provided with a communicating means 81y that makes inside of the upper punch dust-proof unit 6 communicate with outside of the upper punch dust-proof unit 6 at a time when the upper punch dust-proof unit 6 makes an abutting contact with a portion near a circumference of the upper seal 7.

Abstract: The present invention provides a control unit for a powder material compression molding machine including powder material compressing means which compresses a powder material filled between compressing members in an adjusted filled amount by making the compressing members approach to each other at a predetermined interval, so as to mold a molded product, and pressure detecting means which detects a powder material compressing pressure by the powder material compressing means, in electric connection to the powder material compression molding machine, the control unit comprising: weight determining means which determines that the weight of filled powder material is normal; thickness determining means which determines that the thickness of the molded product is abnormal in the case where the pressure detected by the pressure detecting means falls out of a first predetermined range when the weight determining means determines normality; and compression controlling means which controls the powder material compress

Abstract: A rotary powder compression molding equipment arranged to compression molding powder filled in the mortar hole of a mortar fixed to a rotary disc between the lower end face of an upper pestle and the upper end face of a lower pestle, wherein a means for injecting powder lubricant comprises an injection nozzle having a concave surface and injecting powder lubricant L being guided to the concave surface substantially in one direction while facing the end faces of the upper and lower pestles at respective supply positions of powder lubricant, an air flow supply mechanism for injecting air flow to the vicinity of the lower end face of the upper pestle in order to prevent upward scattering of the powder lubricant injected from the injection nozzle, and a charger for charging the powder lubricant when it is injected from the injection nozzle.

Abstract: An apparatus is provided for effectively preventing the scattering and the like of powder material, by maintaining a completely sealed condition, from the supply of the powdery material and the discharge of the molded articles to the cleaning of the interior. A housing 1 comprising, connected via a piping system 10, a vacuum device 11 for depressurizing said housing 1 interior; an atmosphere cut-off valve 12 installed on said piping system 10 for cutting off a piping interior atmosphere on said housing 1 side from a piping interior atmosphere on the vacuum device 11 side; a wetdown piping system 72 for wetting, within the atmosphere on the housing 1 side starting from said atmosphere cut-off valve 12, a compression molding mechanism 2 as well as powdery material stuck to the inside of said housing 1; and an outside air introduction mechanism 15 installed on said housing 1 for opening up an airtight condition of the housing.

Abstract: The present invention provides a method for manufacturing a molding with a core by using compression molding means having upper and lower double-structured punches; the method comprising the steps of supplying molding material for the core and molding material for the outer layer respectively, the step of compression-molding the molding material for the core and/or the molding material for the outer layer, and the step of compression-molding the whole molding with a core, wherein: the step of supplying the molding material for the outer layer posterior to the step of supplying the molding material for the core is performed until a tip of the lower center punch finally takes a position protruding from a tip of the lower outer punch; and the step of compression-molding the whole molding with a core is performed with the tips of the lower center punch and the lower outer punch aligned with each other.

Abstract: This invention provides a glove fitting device to be removably fitted to a hermetically closable cabinet for fitting a glove to the cabinet in a manner to allow the glove to be stretched into the cabinet, the glove fitting device including: a tubular container having opposite first and second open ends, the first open end being configured to allow the glove to be replaceably fitted thereto; a lid-shaped member to be removably fitted to the second open end of the tubular container from inside of the tubular container to close the opening of the second open end substantially hermetically, the second open end becoming oriented inwardly of the cabinet when the tubular container is fitted to the cabinet; and a fixing mechanism for fixing the lid-shaped member to the second open end.

Abstract: In a rotary powder compression molding machine in which a rotary turret is provided within a frame via a vertical shaft so as to be horizontally rotatable, a plurality of dies are provided in the rotary turret at a predetermined interval, an upper punch and a lower punch are held kept above and below each of the dies so as to be vertically slidable, a powder filled in the die is compressed and molded by putting the upper punch and the lower punch in which punch tips are inserted into the dies through a portion between an upper roll and a lower roll, a joint apparatus coupling the vertical shaft and the rotary turret so as to be able to detach the rotary turret from the vertical shaft, comprises a coupling mechanism coupling the vertical shaft and the rotary turret while maintaining a state in which the vertical shaft and the rotary turret are constrained in an axial direction of the vertical shaft with each other, and canceling the coupling between the vertical shaft and the rotary turret by canceling the con

Abstract: In case of administrating weight and thickness of a molded article molded by compressing powder material, if the thickness of the sampled molded article is measured, it takes time to conduct thickness control based on the measured thickness.

Abstract: An object of the compressive molding machine for powder material is to prevent a problem resulting from that the powder material splashes and the splashed powder material enters inside of an upper punch holding bore that holds the upper punch during a process of scraping the powder material after the powder material is filled into the die, or a process of compressively molding the powder material.

Abstract: In a rotary compressive molding machine for powder material wherein powder material filled in a die hole of a die mounted on a rotary table is compressed and molded between a lower end face of the upper punch and an upper end face of the lower punch, a powder lubricant spraying means that sprays powder lubricant comprises a spray nozzle that has a concave face facing to the lower end face of the upper punch or the upper end face of the lower punch at a position where the powder lubricant is sprayed and that sprays the powder lubricant generally toward a direction of the lower end face of the upper punch or the upper end face of the lower punch guided by the concave face, an air current supply mechanism that prevents the powder lubricant sprayed from the spray nozzle from scattering upward by spraying air near the lower end face of the upper punch, and an electrostatic charge device that electrizes the powder lubricant when the powder lubricant is sprayed from the spray nozzle and that electrizes at least the

Abstract: This invention provides a glove fitting device to be removably fitted to a hermetically closable cabinet for fitting a glove to the cabinet in a manner to allow the glove to be stretched into the cabinet, the glove fitting device including: a tubular container having opposite first and second open ends, the first open end being configured to allow the glove to be replaceably fitted thereto; a lid-shaped member to be removably fitted to the second open end of the tubular container from inside of the tubular container to close the opening of the second open end substantially hermetically, the second open end becoming oriented inwardly of the cabinet when the tubular container is fitted to the cabinet; and a fixing mechanism for fixing the lid-shaped member to the second open end.

Abstract: [Problem to be Solved]An apparatus is provided for effectively preventing the scattering and the like of powder material, by maintaining a completely sealed condition, from the supply of the powdery material and the discharge of the molded articles to the cleaning of the interior. [Means of Solving]Said housing 1 comprising, connected via a piping system 10, a vacuum device 11 for depressurizing said housing 1 interior; an atmosphere cut-off valve 12 installed on said piping system 10 for cutting off a piping interior atmosphere on said housing 1 side from a piping interior atmosphere on the vacuum device 11 side; a wetdown piping system 72 for wetting, within the atmosphere on the housing 1 side starting from said atmosphere cut-off valve 12, a compression molding mechanism 2 as well as powdery material stuck to the inside of said housing 1; and an outside air introduction mechanism 15 installed on said housing 1 for opening up an airtight condition of the housing 1.

Abstract: In a rotary compressive molding machine for powder material in which powder material filled in a die hole 41 of a die 4 mounted on a rotary table 3 is compressed and molded between a lower face 5a of an upper punch 5 and an upper face 6a of a lower punch 6, a powder lubricant supplying means LS that supplies the upper face 6a of the lower punch 6, the lower face 5a of the upper punch 5 and the die hole 41 with a predetermined quantity of powder lubricant L prior to filling the powder material comprises a powder lubricant supplying portion LS1 that sends the powder lubricant L, a flow quantity detecting portion LS2 that detects a flow quantity of the powder lubricant L, a retrieved quantity detecting portion LS3 that detects a quantity of superfluous powder lubricant L that has not been used, and a control portion LS4 that controls the powder lubricant supplying portion LS1 by computing a quantity of the powder lubricant L to send out based on a quantity detected by the flow quantity detecting portion LS2 and

Abstract: A method is provided for checking a pickup load cell in a tablet-making machine which detects the compressive force applied to a tablet being formed. According to the method, a dummy tablet-forming die formed on a support block is inserted into a selected one of the die-receiving holes formed in a rotary table in place of a real die. A reference load cell is put on the support block, and the reference load cell and the support block are sandwitched between an upper pressure rod in place of an upper punch and a lower pressure rod in place of a lower punch. Measurements are made by both the pickup load cell and the reference load cell as the reference load cell is compressed between a pair of pressure rollers, and the value of the compressive force detected by the pickup load cell is corrected in accordance with the value of the compressive force detected by the reference load cell.