DE1805405A1 - Device for uniform loading of the die during tablet production - Google Patents

Description

Device for uniform loading of the die during tablet production.

Addition to patent application P 15 77 239.1 - our;? R.13 o71 -The Patent application P 15 77 239.1 relates to a device for uniform loading the die in tablet production, consisting of a filling funnel (a) and a tablet machine filling device (z), which is characterized in that. between the hopper and the filling device a controllable, electrically operated Good conveyor trough (b) lies.

As set out in the above patent application, the claimed has Device compared to known devices previously used for this purpose the advantage that the material to be tabletted evenly in free flow from the filling device can run into the die bore, thereby causing an exact metering and uniformly hard-pressed tablets are obtained.

@@ i. e lich, tablets in direct aisle, i.e.

@@ present sohware without prior gra @@ @rastellen, because the pieces free-flowing into the atrix hole, individual rolling and rotating mobility keep.

There is no bridging in the filling funnel of the tablet machine instead, the particles arrange themselves to form an ideally dense matrix packing high bulk density.

In addition, the granular material can be used with relatively Dosing large grain size classes perfectly for tablet production, since none Segregation, not even with so-called rock granules, which are often particularly large grain size range from the reduction process before press linings or press cakes occur, takes place.

It was also stated that one can rely on agitators that were used in previous Devices were required to prevent bridging in the filling shoe, On the other hand, however, hard-built granules break down again into powder, completely dispense or can attach a screw conveyor in its place.

It has now been discovered that the effectiveness of this device can still be seen can improve if there is a light barrier between the conveyor chute and the die center for the limitation of the ablettiergood @@ eringt. With the help of this light barrier the @ @ of the tablets in the filling device are kept very low, because the tablet always comes from the dosing channel switched via this light barrier only up to the level of the non-beam, if there is light barrier only without Above the matrix table @ from the competition level. With the help of fiberglass bundles - attaches, the ablettisr mass in er @ ällvoric will still do over the entricentisch r @in - and the ewl @. t, as with a display, start with @i @@@ sch @ @. @e @ en @ lls @ @ such a mixing device @ @ @ @ @@. @@@ lich @ in @ cf @@@@ rc @@ @ @@ @ r @@@ e instead. @@ @@ letele @@@ @allt from @dig @. @. @@ a he @@ @ undär movement of the single grain (trickling) in the ring bore, making an ideal dense and dosed die packing is achieved.

The drawing represents an embodiment of the device according to the patent application P 15 77 239.1 that, in which the device according to the invention is included.

In the drawing, (a) means the filling hoppers for sending the Product conveyor chute, e.g. vibrating chute (b) with a throttle resistor (c) It is eststzet, @it the help of the supply of the goods to be talletierenden in the filling device (z) is regulated. (f) means one in the device according to the invention advantageously built-in landscaping for the rear, unused part of the filler shoe (z) on the will be discussed in more detail below. (e) is the metal die table, (a) means the agitator, which is however partially removed, (i) and (j) are more significant @er - and @rterstenpel, (k) the die, (@) the die hole and (z) the light barrier.

In the device according to the invention, the inner surface is expediently of the hopper (a) in a manner known per se in four equal area quarters (a) divided, with two opposing area quarters (a2) covered with glass paper, looer grain, to be glued. This measure prevents bridging of a Substance in bunker outlets and ensures its free flow (siche Dubach, processing technology 3, 1962, @. 433). The height of the hopper (a) is adjustable, which means also the distance between the outlet opening of the filling funnel (a) and the bottom of the vibrating chute (b) is changed. The distance (bj) corresponds to the respective mean grain diameter, which is determined by sieve analysis of the pelletized material. With this kind of attitude step at the funnel outlet no congestion and the requirements There is a continuous, controllable supply.

When setting the distance (b1), make sure that the filling funnel (a) does not touch the vibrating chute (b) anywhere, as the vibrations are transmitted an undesired segregation of the goods located therein on the filling funnel can cause. As soon as the tablet is on the channel (b), it runs the resulting grain band in the direction of the arrow like on a conveyor belt.

Depending on the height setting of the light barrier m, the; -en £ -e regulate the tablet mass present on the die table.

The device according to the invention can also be used in other embodiments of tablet manufacturing equipment.

For example, it can be used in an embodiment where instead of the filling shoe, a rectangular filling box with an open top is used whose dimensions are essentially the same as the previous filler shoe and whose side walls can be of any height, but expediently are not higher than the height of the bulk goods requires, with the box in The rear part is provided with a chute that corresponds to the angle of repose of the goods to be tabletted can be adjusted.

Claims (2)

Patent claims: 1. Device for the same loading of the die in the Tablet production, consisting of a filling funnel (a), a tablet machine filling device (z) one adjustable between the hopper and the filling device, electrically operated product conveyor chute (b) and a die table (e), d a d u r c h g e k e n n n n e i c h n e t that there is a Light barrier (m) is attached. 2. Apparatus according to claim 1, d a d u r c h g e k e n næ e i c h n e t that the light barrier is installed 20 mm above the die table. L e r s e i t e