US3288087A - Tablet making machine - Google Patents

Tablet making machine Download PDF

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Publication number
US3288087A
US3288087A US373357A US37335764A US3288087A US 3288087 A US3288087 A US 3288087A US 373357 A US373357 A US 373357A US 37335764 A US37335764 A US 37335764A US 3288087 A US3288087 A US 3288087A
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US
United States
Prior art keywords
die
shaft
sleeve
tablets
machine
Prior art date
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
Application number
US373357A
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English (en)
Inventor
Deshusses Edmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Const Mecaniques Du Leman SA O
Constructions Mecaniques Du Leman SA Of Geneva
Original Assignee
Const Mecaniques Du Leman SA O
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Const Mecaniques Du Leman SA O filed Critical Const Mecaniques Du Leman SA O
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Publication of US3288087A publication Critical patent/US3288087A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention is directed to improvements in a tablet making machine for making tablets from a powdered pharmaceutical product.
  • This machine is characterised by the fact that it comprises a table carrying a die in which are formed the said tablets, a movable frame provided with rods and crossbars, the top cross bar of which,situated above the said die, carries a punch intended to compress the powdered product into the die, the rods of which pass through the said table, the bottom cross bar of which is subjected to the action of a driving mechanism situated under the said table and producing an alternating movement of the said movable frameyand a distributing device situated above the said table and producing the filling of the die with a powdered product.
  • the drawing shows, by way of example, one em odi-' ment of the invention.
  • FIG. 1 is a perspective view of a tablet making machine.
  • FIG. 2 is a lateral view of the machine, with the board of the casing thereof, constituting its frame, having been removed in order to show part of the mechanism of the machine;
  • FIG. 3 is a plan view of a part of the machine, on an enlarged scale.
  • FIG. 4 is a sectional view of a part of the machine, along the line IVIV of FIG. 3.
  • FIG. 5 is an elevational view, with partial section along the line VV of FIG. 2, of a detail of the machine.
  • FIG. 6 is a section of a detail
  • FIGS. 7 and 8 are plan views, from the bottom, of two 7 details.
  • the machine represented comprises a frame 1 constituted by a casing enclosing a structure 2, carrying a part of the mechanism, and the upper part of which, designated by 2a, constitutes a table.
  • This latter carries a central plate 3 in which is located a die 4, constituting a mould for the tablets which are made by a punch 5.
  • This latter is mounted on the top cross bar 6 of a movable frame comprising rods, designated by 7, which pass through the table 2a of the 'machineand which are slidingly mounted in guiding sleeves 8 (FIG, 5), secured to the table 2a and to a cross bar 2b of the structure 2'.
  • the bottom cross bar of the movable frame, designated by 9, situated under the table 2a is connected, by a shaft 10, to a connecting rod 11 mounted on an excentric 12a of a shaft 12 (FIG. 4).
  • This latter is driven by a motor 13 (FIG. 2) by means of a belt 14 driving a wheel 15 carried by a tubular sleeve 16, engaged on the extremity of the shaft 12, and which is rigid with a toothed gear 17.
  • This gear meshes with a wheel 18 carried by an auxiliary shaft 19 and which is rigid with a gear 20.
  • This gear 20 meshes with a wheel 21 mounted on the shaft 12.
  • the punch 5 is rigid with the shaft 22 slidingly mounted in the cross bar 6, a part 22a of which is threaded and carries, screwed thereon, a nut 23 provided with a lateral frusto-conical toothing 24 (FIG. 4).
  • a frusto-conical gear 25, rigid with a rod 26, is rotatably mounted in a sleeve 27 rigid with the cross bar shaft 12. support 31 as well as the rod 30, constituting the bottom Patented Nov. 29, 1966 6.
  • the shaft 26 carries a driving wheel 28 which permits the nut 23 to rotate thereby displacing axially the shaft 22 and the punch 5 which carries it. This adjusting of the position of the punch, controllable by means of a graduation 29, permits modification of the penetration of the punch into the die 4.
  • the bottom of the die is constituted by a movable rod 30 (FIG. 4); this rod 30 is carried by a support 31 screwed on the threaded part of a sleeve 32 slidingly mounted on a guiding rod 33 carried by the table 2a.
  • a movable rod 30 (FIG. 4); this rod 30 is carried by a support 31 screwed on the threaded part of a sleeve 32 slidingly mounted on a guiding rod 33 carried by the table 2a.
  • This hearing device comprises a rod 38, provided with a head 38a, on which bears the support 31 (FIG. 4).
  • This rod 38 is slidingly mounted in a sleeve 39, screwed in a sleeve 40, carried by the cross bar 2b of the frame 2.
  • the sleeve 40 carries, rotatably mounted thereon, a driving toothed wheel 41, with which meshes a gear 42 (FIG.
  • the bearing head 38a is submitted to the action of a strong coil spring 45 which damps the shock effect which could be produced by the punch acting on the powdered sion is reached.
  • the machine comprises moreover a distributing device, constituted by a central container 46 intended to contain the powdered product and the bottom of which, designated by 46a, is situated above the level of the punch 5, and which is provided with an aperture 47, having the shape of an arc of circle, through which the powdered material flows.
  • the container 46 is engaged by a rotatable shaft 48, provided with an Archimedean screw 49, driven by the gear 20 by means of a wheel 50 carried by a shaft 51 and by means of two frusto-conical gears 52 and 53.
  • This latter is rigidly mounted on a shaft 54 rotatably mounted in a sleeve 2d of the frame 2, and driving a sleeve 55, rigid with the shaft 48, by the intermediary of a coupling device 56.
  • the flowing aperture 47 is closed. by a member 57 hereafter called the obturator-distributor, rigidly mounted on the shaft 48 and rotating therewith.
  • This obturatordistributor 57 interposed between the bottom 46a of the container 46 and the plate 3, is provided with an extension or radial arm 57a in which is provided an oblique passage 58, the upper extremity of which constitutes a slot having the shape of an arc of circle, opening the aperture 47 at each revolution of the obturator-distributor and the lower extremity of which comes opposite the die 4, likely once by revolution. Consequently, at each passage of the canal 58 opposite the aperture 47, this canal is filled.
  • the quantity of powdered material distributed at each revolution into the die is substantially constant, the relative dimensions of the apertures being such that, taking into account the speed of rotation of the arm 57a, the die is completely filledat each passage of the arm. It is to be noted that the arc of circle shape of the openings permits to drive the arm 57a more rapidly than if these openings were circular. Moreover, the filling does not depend from the quantity of material which remains in the container 46, only the powdered material contained in the canal 58 and a part thereof only filling the die.
  • the filling is rendered more easy by the fact that the synchronisation of the several movements is such that the bottom 30 of the die goes down at the time when the obturator-distributor 57 brings the powdered material into the die.
  • the movement of the bottom 30 of the die produces then an aspiration which contributes to the fillmg.
  • the apparatus is built in such a way that its upper .part, especially the container 46 and the obturator-distributor 57, can be disassembled easily for the cleaning.
  • the coupling 56 is not symmetrical so that, after a dissassemblage and a reassemblage, the shaft 48, and consequently the obturator-distributor 57, occupy always the same angular position with respect to the shaft 54 which rotates in synochronisation with the other movable elements of the machine.
  • the extraction of the tablets out of the die 4 is carried out by.
  • means of the movable bottom 30 of the die which has to be exactly flush with the upper face of the die when it occupies its upper position; to this effect, this position has to be adjustable.
  • This adjustment is carried out by means of the rod 33 which can be rotated, by means of a tool acting on its head, designated by 33a, which is embodied in the table 2a (FIG. 4).
  • This rod 33 drives, by a keying 59, the sleeve 32 on which is screwed the support 31.
  • the position in height of this latter, and consequently the position of the bottom 30 of the die is adjustable.
  • the machine as disclosed and, represented has the advantage, especially, that its elements in contact with the pharmaceutical powdered product and with the tablets, all situated above the table:2a, are entirely separated from the controlling mechanism, entirely situated under this table. Thus the tablets cannot be polluted by the lubricant of the machine.
  • a machine for making tablets from a powdered product comprising the combination of:
  • a movable frame including a top cross bar and a bottom cross bar and interconnecting rods
  • a driving mechanism operatively connected to the bottom cross bar of the movable frame for the reciprocating movement of the movable frame relative to the table
  • a reciprocating punch carried by and movable with the top cross bar of the movable frame for compres sing the powdered product in the die
  • a powder distributing mechanism located above the table and including a powder supply container having a lower discharge aperture and a driven rotating screw disposed within the container,
  • a rotatable obturator-distn'butor rigidly mounted on and rotatable with the screw of the powder distributing mechanism and disposed intermediate the powder distributing mechanism and the die, the obturator-distributor being provided with an oblique passage therethrough and having one end registrable at one point in the revolution of rotation with the discharge opening for the charging of the olique passage with the powdered material and having an opposite end registrable at another point in the revolution of rotation with the die for the discharging of the powdered material from the oblique passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Powder Metallurgy (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
US373357A 1963-06-17 1964-06-08 Tablet making machine Expired - Lifetime US3288087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH749063A CH391468A (fr) 1963-06-17 1963-06-17 Machine pour la confection de comprimés

Publications (1)

Publication Number Publication Date
US3288087A true US3288087A (en) 1966-11-29

Family

ID=4325934

Family Applications (1)

Application Number Title Priority Date Filing Date
US373357A Expired - Lifetime US3288087A (en) 1963-06-17 1964-06-08 Tablet making machine

Country Status (6)

Country Link
US (1) US3288087A (fr)
AT (1) AT257051B (fr)
BE (1) BE649399A (fr)
CH (1) CH391468A (fr)
DE (1) DE1296304B (fr)
GB (1) GB1023896A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105162A2 (fr) * 1980-03-27 1984-04-11 Manesty Machines Limited Machines à comprimer des tablettes et matrices pour machines à comprimer les tablettes
CN110067724A (zh) * 2019-03-13 2019-07-30 钟彪 一种滑盘支承式通轴柱塞泵或马达

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US839157A (en) * 1904-08-08 1906-12-25 Gerhard C Kliewer Tablet-making machine.
US843565A (en) * 1906-07-27 1907-02-05 William C Renfrow Briquet-making machine.
GB136302A (en) * 1918-12-21 1919-12-18 Samuel Walter Wilkinson Improvements in or relating to Machines for Making Compressed Tablets and the like.
US1698852A (en) * 1922-03-06 1929-01-15 Barrett Co Compression-producing machine
GB637328A (en) * 1947-09-05 1950-05-17 John Paisley Brick-making machine
GB731600A (en) * 1952-01-30 1955-06-08 John Holroyd And Company Ltd Improvements in or relating to machines for use in the production or covering of tablets and other articles
US2996756A (en) * 1957-07-12 1961-08-22 Korsch Spezialfab Emil Tableting machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US839157A (en) * 1904-08-08 1906-12-25 Gerhard C Kliewer Tablet-making machine.
US843565A (en) * 1906-07-27 1907-02-05 William C Renfrow Briquet-making machine.
GB136302A (en) * 1918-12-21 1919-12-18 Samuel Walter Wilkinson Improvements in or relating to Machines for Making Compressed Tablets and the like.
US1698852A (en) * 1922-03-06 1929-01-15 Barrett Co Compression-producing machine
GB637328A (en) * 1947-09-05 1950-05-17 John Paisley Brick-making machine
GB731600A (en) * 1952-01-30 1955-06-08 John Holroyd And Company Ltd Improvements in or relating to machines for use in the production or covering of tablets and other articles
US2996756A (en) * 1957-07-12 1961-08-22 Korsch Spezialfab Emil Tableting machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105162A2 (fr) * 1980-03-27 1984-04-11 Manesty Machines Limited Machines à comprimer des tablettes et matrices pour machines à comprimer les tablettes
EP0105162A3 (en) * 1980-03-27 1985-07-31 Manesty Machines Limited Improvements in tabletting machines and in dies for tabletting machines
CN110067724A (zh) * 2019-03-13 2019-07-30 钟彪 一种滑盘支承式通轴柱塞泵或马达

Also Published As

Publication number Publication date
CH391468A (fr) 1965-04-30
AT257051B (de) 1967-09-25
BE649399A (fr) 1964-10-16
GB1023896A (en) 1966-03-30
DE1296304B (de) 1969-05-29

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