US3609811A - Powder compression molding machine - Google Patents

Powder compression molding machine Download PDF

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Publication number
US3609811A
US3609811A US1213A US3609811DA US3609811A US 3609811 A US3609811 A US 3609811A US 1213 A US1213 A US 1213A US 3609811D A US3609811D A US 3609811DA US 3609811 A US3609811 A US 3609811A
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US
United States
Prior art keywords
upper punch
compression molding
die
die member
molding machine
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US1213A
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English (en)
Inventor
Yasuo Shimada
Shun Ichi Naito
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3609811A publication Critical patent/US3609811A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing

Definitions

  • the present invention relates to a powder compression molding machine, and more particularly to a powder compi'ession molding machine used for measuring the slipping force of the compression-molded goods, i.e., the slipping force of the surface of contact between the upper punch and the mold goods after compression molding, the terms slipping force being used here and hereinafter to imply generically sticking, torque, bending, capping and factors of surface properties related thereto.
  • the present inventors have found that the best way of judging whether a powder material can be molded without any difficulty, such as capping or sticking, is to measure the slipping force of the compression-molded goods.
  • Another object of the present invention is to provide a powder compression molding machine wherein, besides releasing the periphery of the surface of contact between the upper punch and the molded goods from the surrounding portion, the upper punch can be held vertically and rotatably against the holding means.
  • a further object of the present invention is to provide a powder compression molding machine which makes it possible to measure the slipping force accurately and easily.
  • a powder compression molding machine comprises a first die member fitted in a table; a second die member of separate type which is fitted in the upper portion of said first die member, and which, being split in two parts, can be detached therefrom; a lower punch inserted into the hole of said first die member from the underside; an upper punch inserted into the hole of said second die member of separate type from the upper side; a ram which pushes down said upper punch and causes it to compression-mold the material of powder with which the hole of said first die member and that of said second die member of separate type are filled; and a holding means which are set around said upper punch and which, being split into two parts, can be detached therefrom, to hold said upper punch vertically and in alignment with the axis of the hole of said die of separate type.
  • the holding means and the die member of separate type are each detachable from the powder compression molding machine which has compression-molded the material of powder.
  • FIG. 1 is a longitudinal section of the powder compression molding machine embodying the present invention.
  • FIG. 2 is a plan view of the die of separate type in said machine.
  • the first die mrneber 1 is fitted in the table 2, and the second die member of separate type 3 is fixed to the upper portion of said die member 1 by means of the screws 4, and can be detached therefrom, being split in two parts.
  • These two die members each have central apertures which define a compression molding chamber.
  • the lower punch 5 is inserted into the hole of said first die member 1 from the underside, and the upper punch 6 is inserted into the hole of said second die member of separate type from the upside and can be pulled upward.
  • the ram 7 lets down said upper punch 6 and causes it to compression-mold the material of powder with which the hole of the first die member 1 and that of the second die member of separate type 3 are filled.
  • a ball bearing 8 is loosely fitted around the upper punch 6; and a non-skid ring 9 is used to fix said upper punch 6 to the inner race of said ball bearing 8 as occasion demands.
  • There is a holder 10 of separate type which holds said ball bearing 8 around said upper punch 6 and which, being split in two parts, can be detached therefrom.
  • Said holder of separate type 10 is fixed to the table 2 by means of the fixing panel 11 and the screws 12.
  • Within the compression molding chamber are goods 13 that have been compression-molded.
  • Said ball bearing 8, non-skid ring 9, holder of separate type 10, fixing panel 11, etc. are elements that constitute the holding means for the upper punch 6.
  • the second die member of separate type 3 is fixed to the upper portion of the first die member 1 with the screws 4, then the lower punch 5 is inserted into the hole of the die member -1 from the underside, in such a way that the upper end of the lower punch Sis positioned a little lower than the bottom of the die of separate type 3.
  • the hole of the die member 1 and that of the die member of separate type 3 are filled with a fixed quantity of material of powder.
  • the powder material is compression-molded by the upper punch 6, in which case the lower end of said upper punch 6, that is, the upper end of the molded goods 13 which have been compression-molded, should be positioned a little higher than the lower end of the die of separate type 3.
  • the holder of separate type 10, which has been split and detached as described above, and the fixing panel 11 are re-installed and, after fixing the upper punch 6 to the inner race of the ball bearing 8 with the non-skid ring 9, the ram 7 is lifted and detached from the upper punch 6.
  • the present invention is so constituted that the holding means of the upper punch and part of the die, i.e., the die member of separate type, can be split in two parts and detached, it is possible to release the upper punch and the periphery of the surface of contact between the upper punch and the molded goods, from contact with the surrounding portion.
  • the upper punch when the holding means is fixed around the upper punch with the hearing, which is attached to the upper punch, between them, the upper punch can be held vertically by the holding means and the hearing by reinstalling the holding means af-ter detaching them and removing the die member of separate type, and at the same time, the upper punch can be supported rotatably around the holding means, so that it is possible to measure accurately and easily the torsion obtained by twisting the upper punch against the molded goods.
  • the powder compression molding machine according to this invention can be used for measuring the slipping force of the surface of contact between the upper punch and the molded goods, and has the effect of making it possible to measure this slipping force accurately and easil
  • the invention has been particularly shown and described, it is contemplated that various changes and modifications may be made without departing from the scope of the invention.
  • it may be well to arrange the above-mentioned parts in inverted order, and make it possible to release the lower punch and the periphery of the surface of contact between the lower punch and the molded goods, from contact with the surrounding portion.
  • powder compression molding machine which comprises:
  • a power compression molding machine comprising in combination:
  • detachable fastening means for fastening one of said punch means, and the corresponding die member to said support means, whereby, after compression molding, the contacting surfaces of the molded goods and said one die member can be released from contact with surrounding components to make desired measurements.
  • a power compression molding machine comprising in combination:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Powder Metallurgy (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
US1213A 1969-04-18 1970-01-07 Powder compression molding machine Expired - Lifetime US3609811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3043269 1969-04-18

Publications (1)

Publication Number Publication Date
US3609811A true US3609811A (en) 1971-10-05

Family

ID=12303768

Family Applications (1)

Application Number Title Priority Date Filing Date
US1213A Expired - Lifetime US3609811A (en) 1969-04-18 1970-01-07 Powder compression molding machine

Country Status (3)

Country Link
US (1) US3609811A (fr)
CH (1) CH506290A (fr)
DE (1) DE2008523B2 (fr)

Also Published As

Publication number Publication date
CH506290A (fr) 1971-04-30
DE2008523A1 (de) 1971-02-11
DE2008523B2 (de) 1971-08-19

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