Apparatus for compression molding a powder within a container

Claim 1

An apparatus for effecting compression molding of a powder within a container, comprising a rotary member having at least three through-holes therein and adapted to be rotated while holding in each of said through-holes a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and adapted to insert said container into said through-hole in the rotary member with the open end thereof facing downwardly when said through-hole is located at said at least one station; means provided at at least another one of said stations and comprising a hopper capable of reciprocatory movement in relation to rotation of said rotary member, a cavity die having formed therein a hollow open at the upper and lower ends thereof, and a core die capable of vertical reciprocatory movement within said cavity die, said last-mentioned means being operative in such a manner that when the lower open end of said cavity die has been closed by said core die, a compressionmoldable powder is charged into the hollow of said cavity die from said hopper and after that when the container being held in said through-hole is located at said at least another one of the stations and held immovably thereat, said core die is moved upwardly in said cavity die, whereby said powder in said cavity die is packed into said container and compression-molded therein into a prescribed shape; and means provided at at least still another one of said stations and adapted to remove said container from said rotary member with the shaped mold of the powder therein when said container is located and held immovably at said still another one of the stations.

Claim 2

An apparatus for effecting compression molding of a powder within a container, comprising a rotary member having at least three through-holes therein and adapted to be rotated while holding in each of said through-holes a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and adapted to insert said container into said through-hole in the rotary member with the open end thereof facing downwardly when said through-hole is located at said at least one station; means provided at at least another one of said stations and comprising a hopper capable of reciprocatory movement in relation to rotation of said rotary member, a cavity die having formed therein a hollow open at the upper and lower ends thereof, and a core die capable of vertical reciprocatory movement within said cavity die, said last-mentioned means being operative in such a manner that when the lower open end of said cavity die has been closed by said core die, a compressionmoldable powder is charged into the hollow of said cavity die from said hopper and after that when the container being held in said through-hole is located at said at least another one of the stations and held immovably thereat, said core die is moved upwardly in said cavity die, whereby said powder in said cavity die is packed into said container and compression-molded therein into a prescribed shape; and means provided at at least still another one of said stations and adapted to remove said container from said rotary member with the shaped mold of the powder therein when said container is located and held immovably at said still another one of the stations.

Claim 3

An apparatus for effecting compression molding of a powder within a container, comprising a cross-shaped rotatable rotary member having a container holder secured to the outer end of each arm thereof, said container holder having formed therein a through-hole adapted for holding a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and comprising a container delivery chute and a vertically movable spindle which is moved upwardly when each of the containers being delivered in said container delivery chute with the open end facing downwardly is brought into alignment with said through-hole, whereby said container is inserted into said through-hole; means provided at at least another one of said stations and comprising a reciprocating hopper, a cavity die having formed therein a cylindrical hollow open at the upper and lower ends thereof, a core die-constitutiNg spindle capable of vertical reciprocatory movement within said cavity die and a sleeve surrounding said spindle and being moved vertically reciprocatorily within said cavity die along the peripheral wall of said spindle, the lower open end of said cavity die being closed by said spindle and said sleeve and after a compression-moldable powder has been charged into the hollow of said cavity die from the hopper sliding on an arcuate plate secured at one end to said cavity die said spindle being moved upwardly and when the container being held in said through-hole has been located at said another one of the stations in alignment with the spindle and the sleeve said spindle and said sleeve being further moved upwardly, whereby said powder charged in said cavity die is packed into said container and compression-molded therein into a prescribed shape; a vertically movable stopper adapted to abut against the top face of said holder and the bottom face of said container being held in said holder when said container is located at said another one of stations and held immovably above said cavity die, and thereby to prevent said container from being pushed upwardly to move out of said holder during compression molding of said powder within said container; and means provided at at least still another one of said stations and adapted to push said container from the upper side when said container, with the shaped mold of the powder formed therein, is located at said still another one of the stations and thereby to remove said container from said holder.

Claim 4

An apparatus for effecting compression molding of a powder within a container, comprising a cross-shaped rotatable rotary member having a container holder secured to the outer end of each arm thereof, said container holder having formed therein a through-hole adapted for holding a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and comprising a container delivery chute and a vertically movable spindle which is moved upwardly when each of the containers being delivered in said container delivery chute with the open end facing downwardly is brought into alignment with said through-hole, whereby said container is inserted into said through-hole; means provided at at least another one of said stations and comprising a reciprocating hopper, a cavity die having formed therein a cylindrical hollow open at the upper and lower ends thereof, a core die-constitutiNg spindle capable of vertical reciprocatory movement within said cavity die and a sleeve surrounding said spindle and being moved vertically reciprocatorily within said cavity die along the peripheral wall of said spindle, the lower open end of said cavity die being closed by said spindle and said sleeve and after a compression-moldable powder has been charged into the hollow of said cavity die from the hopper sliding on an arcuate plate secured at one end to said cavity die said spindle being moved upwardly and when the container being held in said through-hole has been located at said another one of the stations in alignment with the spindle and the sleeve said spindle and said sleeve being further moved upwardly, whereby said powder charged in said cavity die is packed into said container and compression-molded therein into a prescribed shape; a vertically movable stopper adapted to abut against the top face of said holder and the bottom face of said container being held in said holder when said container is located at said another one of stations and held immovably above said cavity die, and thereby to prevent said container from being pushed upwardly to move out of said holder during compression molding of said powder within said container; and means provided at at least still another one of said stations and adapted to push said container from the upper side when said container, with the shaped mold of the powder formed therein, is located at said still another one of the stations and thereby to remove said container from said holder.

Claim 6

An apparatus for effecting compression molding of a powder within a container, comprising a rotary member having at least three through-holes therein and adapted to be rotated while holding in each of said through-holes a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and adapted to insert said container into said through-hole in the rotary member with the open end thereof facing downwardly when said through-hole is located at said at least one station; means provided at at least another one of said stations and comprising a hopper capable of reciprocatory movement in relation to rotation of said rotary member, a cavity die having formed therein a hollow open at the upper and lower ends thereof, a core die capable of vertical reciprocatory movement within said cavity die and a vertically movable pusher, said last-mentioned means being operative in such a manner that when the lower open end of said cavity die has been closed by said core die, a compression-moldable powder is charged into the hollow of said cavity die from said hopper and after that when said container being held in said through-hole has been located at said at least another one of the stations and is held immovably thereat, said container is forced into said cavity die by said pusher, whereby said powder is received in and compression-molded within said container into a prescribed shape by the cooperation of said container and said core die moving upwardly within said container relative thereto, and thereafter said pusher is moved upwardly from said container and said core die is moved further upwardly to insert the container with the shaped mold of the powder formed therein into said through-hole in the rotary member and is subsequently moved downward to permit the rotation of the rotary member; and means provided at at least still another one of said stations and adapted to remove said container from said rotary member with the shaped mold of the powder therein when said Container is located and held immovably at still another one of the stations.

Claim 7

An apparatus for effecting compression molding of a powder within a container, comprising a rotary member having at least three through-holes therein and adapted to be rotated while holding in each of said through-holes a container, open at one end, with the open end facing downwardly; means for rotating said rotary member intermittently in such a manner that each of said through-holes is located at at least three stations of said apparatus one after another successively; means provided at at least one of said stations and adapted to insert said container into said through-hole in the rotary member with the open end thereof facing downwardly when said through-hole is located at said at least one station; means provided at at least another one of said stations and comprising a hopper capable of reciprocatory movement in relation to rotation of said rotary member, a cavity die having formed therein a hollow open at the upper and lower ends thereof, a core die capable of vertical reciprocatory movement within said cavity die and a vertically movable pusher, said last-mentioned means being operative in such a manner that when the lower open end of said cavity die has been closed by said core die, a compression-moldable powder is charged into the hollow of said cavity die from said hopper and after that when said container being held in said through-hole has been located at said at least another one of the stations and is held immovably thereat, said container is forced into said cavity die by said pusher, whereby said powder is received in and compression-molded within said container into a prescribed shape by the cooperation of said container and said core die moving upwardly within said container relative thereto, and thereafter said pusher is moved upwardly from said container and said core die is moved further upwardly to insert the container with the shaped mold of the powder formed therein into said through-hole in the rotary member and is subsequently moved downward to permit the rotation of the rotary member; and means provided at at least still another one of said stations and adapted to remove said container from said rotary member with the shaped mold of the powder therein when said Container is located and held immovably at still another one of the stations.