US3461195A - Spraying method and apparatus to lubricate punch surfaces of tabletting machines - Google Patents

Spraying method and apparatus to lubricate punch surfaces of tabletting machines Download PDF

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Publication number
US3461195A
US3461195A US543701A US3461195DA US3461195A US 3461195 A US3461195 A US 3461195A US 543701 A US543701 A US 543701A US 3461195D A US3461195D A US 3461195DA US 3461195 A US3461195 A US 3461195A
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United States
Prior art keywords
lubricate
lubricating
powder
tabletting
punch
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US543701A
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English (en)
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Carlo Sebastiani
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Individual
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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
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0011—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses lubricating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/115—Lubricator

Definitions

  • FIG. 4A SPRAYING METHOD AND APPARATUS TO LUBRICATE PUNCH SURFACES 0F TABLETTING MACHINES Filed April 19, 1966 3 Sheets-Sheet 3
  • FIG. 4A SPRAYING METHOD AND APPARATUS TO LUBRICATE PUNCH SURFACES 0F TABLETTING MACHINES Filed April 19, 1966 3 Sheets-Sheet 3
  • the plugs must, however, be formed of a plastic material of the acrylic resin class, as such a material is the only plastic material which was found to produce tablets having the desired smooth .and solid surface, while any other conventional plastic material, such as Teflon, natural rubber and the like, does not give said surface and the tablets produced have an irregular and rough surface.
  • any other conventional plastic material such as Teflon, natural rubber and the like, does not give said surface and the tablets produced have an irregular and rough surface.
  • the proper lubricating of said plug free ends allows working at a relative humidity not above and temperature not above 30 C.
  • the main object of the present invention is to provide an apparatus for producing effervescent, fully water-soluble tablets as previously described, by employing any kind of effervescent blend without special air-conditioning installation and by using conventional tabletting machines, both of eccentric or rotary type, to which said apparatus will be applied.
  • the free ends of the machine punches are previously covered by said plugs, which are properly lubricated by spraying a powder lubricant at suitable moments during working.
  • FIG. 1 is a diagram view of the main connected component means of this invention apparatus.
  • FIGURES 3A-3B are front elevational and fragmentary sectional views of the upper and lower punch heads of a tabletting machine, the free ends of which are properly covered by acrylic resin plugs.
  • FIGURES 4A-4D are the different positions of FIG. 2 chamber through the first four compression strokes.
  • FIG. 1 In FIG. 1 are shown only the most important component means of the apparatus, i.e. powder lubricant tank 10, spraying and lubricating chamber 11 attached to the tabletting machine shoe 12, microswitch 13 and electric valve 14, the latter two comprising the timing means between the lubrication and the compression strokes.
  • a flexible plastic pipe (not shown) is provided to connect tank 10 to lubricating chamber 11. It will be understood by those skilled in the art, that the embodiment here illustrated relates to a single station tabletting machine of the eccentric type, where only one spraying and lubricating chamber 11 for applying lubricating powder to the punches is provided.
  • a conventional air-compressor or an inert gas bottle, such as nitrogen, may be used.
  • FIG. 1 When spraying and lubricating chamber 11 is in the position of FIG. 4A, microswitch 13 (FIG. 1) opens electric valve 14 and a spray of the lubricant is obtained, by a sprayer not shown, on the free surface of the plug 17 which covers the head of lower punch 15 (FIG. 3B).
  • a cylindrical compression chamber 19 By passing from the position of FIG. 4A to the position of FIG. 4B, a cylindrical compression chamber 19 will be formed wherein the suit-able effervescent blend to be compressed is fed by the feed chamber 20 of the machine shoe 21. In the following position of FIG.
  • electric valve 14 is again opened to lubricate indirectly the plug free end of the upper punch by applying the powder lubricant on the free face of the formed blend cylinder 22 to be compressed, which is at that time enclosed within said compression chamber 19.
  • the blend compression takes place in the position of FIG. 4D and, after removing the formed tablet, the cycle is repeated.
  • the embodiment of the invention herein illustrated relates to an apparatus for a tabletting machine of the eccentric type, where only one of said spraying .and lubricating chamber 11 is used.
  • the second spraying and lubricating chamber may lubricate the free face of upper plug either indirectly, as explained for the tabletting machine of eccentric type, or directly on said free face of upper plug, by rotation of the sprayer through
  • a process for producing water soluble tablets on a single station tabletting a lower punch and a die with an inner surface comprising the steps, applying to the forming surface of the lower punch a lubricating powder; moving the lower punch relative to the die to define with the inner surface of the die a compression spacer having an open end; filling the compression space with a tablet forming blend; applying to the exposed surface of the tablet forming blend at said open end a lubricating powder; moving the upper punch from its retracted position towards the lower punch to form a tablet between the surfaces of the two punches and the inner surface of the die; moving the upper punch to its retracted position; and removing the tablet from the die.
  • an apparatus for applying lubricating powder to said punches of the tabletting machine comprising storage means for lubricating powder; application means for said powder connected to said storage means, said application means being movable between a first position in which it is remote from said compression space and a second position in which it is located on top of said compression space; pressure means to force said lubricating powder into said application means for application to the punches; valve means for said pressure means; and control means for said valve means operating in time relation with the movement of the application means to deposit lubricating powder on the lower punch before the tablet forming machine having an upper and,
  • v.blend is fed into said compression space and on top of the tablet forming blend after said blend has been fed into said compression space.”
  • An apparatus for applying lubricating powder as defined in claim 2 also comprising a pair of plastic plugs for the production of tablets with a smoothsurface, disposed at the ends of said lower punch and said upper punch for retention of the lubricating powder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Medicinal Preparation (AREA)
  • Lubricants (AREA)
US543701A 1965-06-04 1966-04-19 Spraying method and apparatus to lubricate punch surfaces of tabletting machines Expired - Lifetime US3461195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1236365 1965-06-04

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BE (1) BE682060A (forum.php)
CH (1) CH477974A (forum.php)
DE (1) DE1577258A1 (forum.php)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387764A1 (fr) * 1977-04-20 1978-11-17 Thomae Gmbh Dr K Procede pour pulveriser un revetement sur les outils compresseurs de machines a fabriquer des articles moules
DE3811260A1 (de) * 1988-04-02 1989-10-26 Thomae Gmbh Dr K Gezielte abgabe dosierter mengen von feinverteilten feststoffen mit venturi-duese und geregelter ansteuerung
US5356577A (en) * 1988-04-02 1994-10-18 Dr. Karl Thomae Gmbh Controlled release of metered quantities of finely divided solids with a venturi nozzle and regulated control
US5407339A (en) * 1993-09-27 1995-04-18 Vector Corporation Triturate tablet machine
US6964779B1 (en) * 1998-04-08 2005-11-15 Kyowa Hakko Kogyo Co., Ltd. Tablet manufacturing method and tablet
US20060219081A1 (en) * 2005-03-29 2006-10-05 Brother Kogyo Kabushiki Kaisha Punch
US20100021540A1 (en) * 2008-02-28 2010-01-28 Abbott Laboratories Tablets and Preparation Thereof
FR3093464A1 (fr) * 2019-03-05 2020-09-11 Esco France Pastilleuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740281C1 (en) * 1987-11-27 1988-12-29 Messerschmitt Boelkow Blohm Method and device for applying a separating agent to the pressing chamber wall of a pressing tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1105838A (en) * 1914-08-04 Tablet-machine
US2286983A (en) * 1940-05-09 1942-06-16 American Mach & Foundry Dough rounding mechanism
US2965946A (en) * 1958-10-02 1960-12-27 Colgate Palmolive Co Apparatus and process for pressing detergent bars and cakes
US3158111A (en) * 1962-06-06 1964-11-24 Smith Kline French Lab Method and apparatus for forming tablets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1105838A (en) * 1914-08-04 Tablet-machine
US2286983A (en) * 1940-05-09 1942-06-16 American Mach & Foundry Dough rounding mechanism
US2965946A (en) * 1958-10-02 1960-12-27 Colgate Palmolive Co Apparatus and process for pressing detergent bars and cakes
US3158111A (en) * 1962-06-06 1964-11-24 Smith Kline French Lab Method and apparatus for forming tablets

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387764A1 (fr) * 1977-04-20 1978-11-17 Thomae Gmbh Dr K Procede pour pulveriser un revetement sur les outils compresseurs de machines a fabriquer des articles moules
DE3811260A1 (de) * 1988-04-02 1989-10-26 Thomae Gmbh Dr K Gezielte abgabe dosierter mengen von feinverteilten feststoffen mit venturi-duese und geregelter ansteuerung
US5356577A (en) * 1988-04-02 1994-10-18 Dr. Karl Thomae Gmbh Controlled release of metered quantities of finely divided solids with a venturi nozzle and regulated control
US5407339A (en) * 1993-09-27 1995-04-18 Vector Corporation Triturate tablet machine
US6964779B1 (en) * 1998-04-08 2005-11-15 Kyowa Hakko Kogyo Co., Ltd. Tablet manufacturing method and tablet
US20060219081A1 (en) * 2005-03-29 2006-10-05 Brother Kogyo Kabushiki Kaisha Punch
US20100037672A1 (en) * 2005-03-29 2010-02-18 Brother Kogyo Kabushiki Kaisha Punch
US8596105B2 (en) 2005-03-29 2013-12-03 Brother Kogyo Kabushiki Kaisha Punch
US20100021540A1 (en) * 2008-02-28 2010-01-28 Abbott Laboratories Tablets and Preparation Thereof
FR3093464A1 (fr) * 2019-03-05 2020-09-11 Esco France Pastilleuse

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Publication number Publication date
DE1577258A1 (de) 1970-04-23
BE682060A (forum.php) 1966-11-14
CH477974A (de) 1969-09-15

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