Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
  • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels

Definitions

• the invention relates to a device for deburring and dedusting tablets or pills fed from a tablet press according to the preamble e of claim 1.
• the sieve drum is rotatable and inclined, so that when the sieve drum is rotated, the tablets or pills are conveyed through the ⁇ drum due to the force of gravity and the burrs are mutually ground due to the constant friction of the tablets or pills against one another.
• baffles represent baffles that one
• the drum jacket consists of scale-like spaced overlapping ⁇ o kenden individual cylinder segments, each of which is oscillatable and adjustable about an axis parallel to the drum axis, so that they can be moved in or out
• the invention is based on the one hand the task of creating a device ⁇ with which tablets or pills can be completely deburred and / or dedusted over the shortest distance; on the other hand, the tablets or pills after the
• the object of the invention is that the jacket of the screen drum consists of two angled sections which are angled to form coherent surfaces 7 which run longitudinally to the center axis of the screen drum, arranged in the longitudinal direction of the screening drum and 8 offset to each other transversely and each section forms one half of the shell, the 9 adjacent longitudinal edges of the sections each leaving an outwardly open longitudinal gap (a) over the length of the sections, the wider is the 1 largest diameter of the individual tablet or pill, with the inner longitudinal edges of the sections forming falling edges over which the tablets or 3 pills slide when the sieve drum rotates and onto the underlying one ⁇ fall section of the jacket.
• the areas of the sections are advantageous in themselves
• the device according to the invention has the salient advantage that with this relatively small-volume, loose bulk goods of a general nature, in particular tablets or pills or suppositories from a press, they are treated completely and quickly by rubbing, such as deburring and / or dusting, whereby only a 12 short way is necessary.
• rubbing such as deburring and / or dusting
• the individual objects of the bulk material fall down one or more falling edges each time the drum is turned. Because of these falling edges and the fact that the surfaces of the sections are flat or slightly curved in a concave manner, it is advantageously achieved that the individual ⁇ objects of the bulk material overtake each other, so that subsequent, later falling objects of the bulk material fall down those counter
• the sieve drum is used at the same time to convey the tablets or pills through it, it can be inclined in the form of an inclined plane.
• the tube piece thus acts as a pulsation damper, which dampens the more or less pulsed leaving of the objects from the sieve drum and causes a desired separation.
• the rotary movement of the sieve drum can also advantageously take place in a multitude 3 of small, predeterminable steps of small to very small rotation angle per step 4, which are impressed on the sieve drum as more or less easy rattling or 5 as vibration, which causes the friction of the tablets with each other and the 6 individualization of the tablets additionally supported.
• the stepper motor can, for example, regulate between 1 and 10 steps per second, the sieve drum, for example, between 0.1 and 10 U / sec. In this way 9 tablets or pills can be processed completely product-related according to the specific parameters of the tablets or pills.
• the sieve drum is given no or only a slight vibration; in the case of hard objects, a correspondingly adapted vibration; in addition, the speed of rotation of the sieve drum can be adjusted accordingly.
• Figure 1 is a view of a screen drum, the jacket of two parts
• FIG. 2 shows a view of the sieve drum along the section line A-A with the housing partially broken away and ⁇ FIGS. 3a-3d show the principle of a sieve drum in different positions in order to show the movements of the tablets in different positions.
• a sieve drum 25 is rotatably mounted about an axis of rotation, the
• 14 jacket of the screen drum 25 is open-spirally curved and can consist of one piece, so that the two edges 26 and 27, preferably along a length line, face each other at a distance b and overlap and form a longitudinal gap b in between ⁇ .
• the sieve drum 25 rotates in the direction of the curved arrow 32 in a clockwise direction such that the tablets always from
• the tablets or pills are either a metal detection station i tion or a test facility for testing the tablets according to specific parameters.
• FIGS. 1 and 2 show an example of a technical configuration of the pre
• This consists of an elongated cylindrical sieve drum 2, wherein
• the jacket of the screening drum 2 consists of two sections 3, 4 with holes 6, so that the sections 3, 4 are completely screened.
• the sections 3, 4 are held at both ends in retaining rings 7, 8, which in turn are mutually connected by longitudinally extending bars.
• the retaining ring 7 carries a ring gear 10 for rotating the sieve drum 2, the retaining ring 8 has a circumferential groove 11 into which a wheel, not shown, for ex-
• sieve drum 2 is connected and which serves as a pulsation damper.
• This pipe section 9 effectively collects or accumulates tablets at the transition i ⁇ from the sieve drum into the pipe section 9 and the tablets ⁇ are separated.
• the length of the tube 9 with respect to the screening drum 2 is preferably between one fifth and one third.
• the screening drum is located at the end of tube 9
• the sieve drum 2 is installed in a preferably closed, shell-shaped or cylindrical 5-shaped housing 1, which has an inclined bottom 5 with an outlet funnel 14 for suction of the dust or the bulk material.
• the housing 1 has a filling funnel 15 protruding through the front cover surface of the screening drum 8 2 into the same for filling the screening drum 2.
• the screening drum 2 is preferably arranged obliquely, the filling funnel 15 1 being arranged 2 at the upper end and the pipe section 9 at the lower end of the screening drum 2.
• the tablets, pills or the bulk material thus pass through the sieve drum 3 2 due to gravity and the circulating movements.
• the jacket of the screening drum 2 consists of two sections 3, 4, each in the
• the sections 3, 4 preferably consist of five elongated
• flanks 18 19-20 21, 22, which are angled, the flanks 18 and
• the surfaces 19, 22 represent beveled areas between the ⁇ surfaces 18, 20 and 20, 21; those surfaces 19 and 22 of the sections 3, 4, 7 which are inclined to the mutually perpendicular surfaces 18, 20, 21, s have a different width.
• the sections 3, 4 are joined so as to be offset transversely to the central axis 17 of the screening drum 2 in such a way that the longitudinal edge 23 of the surface 18 lies outside and the longitudinal edge 23 'of the surface 21 lies within the volume of the screening drum 2; or the longitudinal edge 24 of the section 4 lies inside and the longitudinal edge 24 'of the section 4 lies outside the volume; the longitudinal edges 23 and 24 or 23 'and 24' overlap.
• the sections can also consist of three flat surfaces, the e transitions between the individual surfaces being formed by a curved surface.
• the object of the invention is preferably suitable for deburring and dusting e of tablets or pills fed from a tablet press after the pressing process.
• the object of the invention can also be used for the abrading or smoothing or dusting or drying treatment of loose, preferably relatively small-volume bulk goods.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Medical Preparation Storing Or Oral Administration Devices (AREA)
• Medicinal Preparation (AREA)
• Glanulating (AREA)
• Combined Means For Separation Of Solids (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6433493

Family Applications (1)

Country Status (4)

Cited By (6)

Families Citing this family (6)

Citations (1)

Family Cites Families (4)

• 1991
  • 1991-06-08 DE DE4118883A patent/DE4118883A1/de active Granted
• 1992
  • 1992-06-09 AT AT92911094T patent/ATE127376T1/de active
  • 1992-06-09 EP EP92911094A patent/EP0588838B1/de not_active Expired - Lifetime
  • 1992-06-09 DE DE59203596T patent/DE59203596D1/de not_active Expired - Lifetime
  • 1992-06-09 WO PCT/DE1992/000470 patent/WO1992022401A1/de active IP Right Grant

Patent Citations (1)

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