DE1970936U - DEVICE FOR FORMING POCKET-LIKE RECESSES IN FILM STRIPS MADE OF THERMOPLASTIC MATERIAL. - Google Patents

Description

. 515 73 7 * -7.9.67

HOi ¹ LIGER + KARG Ylfaiblingen near Stuttgart Heerstraße, PO Box. 118

<* H 50 179 / 81a Gbm faiblingen, August 31, 1967

PB no. 101 Dr Wolf / Vo.

Apparatus for Einformeη you pocket-like Ve rtiefungen in Fol iens treifen, from thermoplastic material.

The innovation relates to a device for molding τοη pocket-like depressions in strips of thermoplastic film Material by means of vacuum as well as for filling the wells with filling material and for sealing on a Deek foil, the one rotating, trough-shaped, each connected in groups to a vacuum or blown air duct Contains recesses provided deep-drawing drum, over which the film is passed, and the also includes a transfer device for the filling material and a sealing roller.

In order to make such a device structurally simple, space-saving and functionally reliable, according to the The innovation proposed that all of the channels assigned to the individual groups of recesses in the deep-drawing drum Open into one end of the drum and the individual recesses of the groups are connected to channels via bores are and on this end face of the drum a stationary ring rests on its facing the drum Side contains two spatially offset slots, one of which is a slot on a vacuum line and the other slot is connected to a compressed air line, so that the inlet openings when the drum is rotating of the feed channels periodically slide past the slots.

i This document (description uncTSdi? t2als _P r.) is the last one submitted; she gives way to value

sr ι-sprüngl.ch * documents submitted. The legal significance of the deviation has been checked η i *. 'V / "■''" ^ - ^re "- ^{v? 5n} U.iterkigen are bound in the official files. Sis can,! \, " Jrzeit c ^u n «proof *. --ici .... .-. ^ _{33 a} es: l; nr.f: ehcssehen. On request, his.-vüü uuch Γ.- ol-ooh-n or fiva can be delivered at the usual prices, German Patent Office, Cebraucl.smusiers'ieüe.

H 50 179/81 a Gbm - 2 -

The innovation is described below with the aid of an exemplary embodiment illustrated schematically in the drawing yet, explained in more detail.

Show Bs

Fig. 1s the side view of a deep-drawing drum in section,

FIG. 2s a view of the drum along section AB through FIG. 1.

As FIG. 1 shows in particular, the deep-drawing drum 2, which is rotatably mounted about a horizontal axis 1, is a deflection roller 3 upstream of the film 4 running from a gate roll, not shown, so that the on the drum Accruing film is already in thermal contact with the drum in the area of the lower drum half. A little above the point where the film runs onto the drum is one Heat source attached in the form of a hot air blower 5, which extends over part of the drum circumference and the Curvature of the drum is adapted. To prevent the film from softening prematurely, it may be necessary to to present the film with a thermal protection that runs in the direction of flow of the tape is to be attached in front of the fan. The blower 5 is a blown air duct in the circumferential direction of the drum 6 upstream, which runs radially to the drum axis and to the trough-shaped recesses lying next to one another 7 acts in the drum. At the height of the vertex A transfer device 8 for tablets 9, which can be operated manually or automatically, is attached to the drum is working. A cover 10 is provided so that the tablets located in the recesses retain their position The cover 10 is followed by a sealing roller 11, which the cover film 12 on the deep-drawn and with Seals on foil filled with tablets.

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H. 50 179/81 a Gbm - 3 -

Like Pig in particular. 2 shows, channels 13 open into the recesses of the drum, each with a channel H in At the end of the line as a result of the rotation of the drum periodically, with the valve seat 15 in the stationary part comes to cover, so that the vacuum is effective during this time.

The one used for the supply of compressed air for blowing out the pack and cooling the drum, shown in dashed lines in FIG drawn longitudinal slot 17 is τοπ the channels 14 also periodically swept over. For additional For cooling the drum, a perforated cooling tube 18 is guided into the interior of the drum.

The device described results in the following mode of operation;

The guided over the pulley 3, from below on the Foil 4 running up on drum 2 initially comes under the influence of the hot air emitted by fan 5. Through this the film heats up, and via the film the drum, which extracts heat from the film. Does the foil have the plastic State reached, then it comes under the influence of a vacuum.

This has the consequence that the foil parts lying in the area of the recesses 7 are in the relevant recesses be sucked in. This effect is now further supported by blown air, which is supplied via channel 6 will.

When the relevant recess groups arrive under the feed device 8, the film sections are already back cooled so far that solid substances such as tablets and dragees,

50 179 / 81aObm - 4 -

Powder, granulate or even liquid substances into the
pocket-like depressions of the film are entered
be able. When the filling process is finished, the
Foil sections to the sealing station, at which the cover foil 12, consisting for example of coated aluminum, is sealed on by means of the roller 11. This is followed by the ejection of the filled and sealed film web and, finally, the separation of pack sections of a certain length.

Expectations:

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Claims (6)

.515737-7.9.67 H 50 179 / 81aGlom - 5 - S c h u t ζ a η s P1 r ü c h___e 1.) Device for molding pocket-like depressions in film strips made of thermoplastic material using a vacuum and for loading the Wells with filling material and for sealing a cover film, which has a rotating, trough-shaped, In each case, groups of deep-drawing drums are provided with recesses connected to a vacuum or blown air duct contains, over which the film is passed, and which also has a transfer device for the filling material as well as a sealing roller, characterized in that the individual recess groups the channels (14) assigned to the deep-drawing drum (2) are all in one end face of the drum (2) open and the individual recesses (7) of the groups connected to channels (14) via bores (13) are and on this end face of the drum a fixed Hing (16) rests on his the side facing the drum contains two spatially offset slots (15, 17) from which one slot (15) on a vacuum line and the other slot (17) on a compressed air line is connected, so that the inlet openings of the feed channels (14) to the rotating drum Slits (15, 17) periodically slide past. 2.) Device according to claim 1, characterized in that the deep-drawing drum (2) is designed as a hollow cylinder and the feed channels running parallel to the longitudinal axis of the drum in the cylinder wall (14) lie on a common radius. Ξ 50 179 / 8.1_a.GT3m - 6 - 3.) Device according to claims 1 and 2, characterized in that the slots (15, 17) have the same radial distance from the drum center as the feed channels (H) and extend over several mouths of the feed channels. 4 «) Device according to claims 1-3» characterized in that that the slot (17) is offset from the slot (15) by about 120 °. 5.) Device according to claims 1-4, characterized in that the deep-drawing drum (2) has a sealing roller (11) is assigned, the drive shaft of which is in the horizontal plane laid by the drive axis of the deep-drawing drum and runs parallel to it. 6.) Device according to claims 1-5 »characterized in that that a hot air blower is provided as an external heat source, which extends over part of the circumference of the Drum extends and the curvature of the drum is adapted.