oct. 1o, 195o A. Bossu 2,525,202
MACHINE FOR THE PRODUCTION 0F PACKAGING INLAYS 4 Filed March 15, 1948 Fig-'7 im a b i@ Patented Oct. 10, r1950 MACHINE Foa THE PRoDUo'rroN oF y PACKAGING INLAYS Alf-red ossLBottmingen, near Basel, Switzerland Application Maren 15, 194s., serial No naar, In' Switzerland January 8, 1948 7 Claims.
The present invention relatesv to ay machine for `the production of packagingv inlays having a suca base strip which is to be stuckrto the formed band, to the terminal part of the working zone of the` cross-rods, the whole being so arranged that recesses corresponding to the cross-rods are formed in the bandV led through` the machine, by the co-operation of the band-pressing roller with the cross-rods; the ent-ries'to the recesses being narrowed by holding back andso closing together the cross-rods which are led through the working zone with play in the direction of movement, and the band withV the recesses so formedV finally being stuck to the base strip which is led to it from below.
An example of an embodiment of the, invention is illustrated in the accompanying drawing, but only to the extent necessary for understanding the invention. i
Figure 1 shows partly in elevation and partly in section that part of the machine which is directly involved by the invention;
Fig. 2 is a cross-section on the line lEI-II of Figure 1;
Figure 3 is a detail plan view on the line III-III of Figure 1, and
Figure 4 is a longitudinal section of a packaging inlay produced on the machine of Figure 1.
The machine illustrated in Figures 1, 2 and 3 has a caterpillar-like circulating member with cross-rods a, the successive rods being connected together at their reduced ends by chain members b formingslotted guides. The crossrods a so connected run over two pairs of chain wheels c1 and c2, of which one pair is on a shaft d1 and the other on a shaft d2. Of the two shafts, d1 is driven. Below the pair of chain wheels c1, on a loose shaft e1, is a band-pressing roller e which engages with its teeth between the successive cross-Lrodsa of the circulating member. Directly below this member, between the wheel pairs c1, c2 is provided a guide table f which presents a transverse opening into which a guide roller g enters. Over this rollerg runs a strip lh 2 which isconveyed to it by two feed rollers il, i2 of which the roller i1 at the same time serves to coatV the strip with an adhesive, the stripy then runningthroug-h the opening in the table and then being drawn away over the terminal part of the table as may be seen in Figure 1. m is a blade spring constituting a braking member, which is secured by one end to some stationary part and with its other end engages with the cross-rods passing by it below', in such a way that the rods are held back over the whole length of the guide table f. In this wayv the recesses formed by the cross-rods a which traverse the working zone between the wheel pairs c1 and c2, and the band pressing roller e, in a band o of material carried through the machine, are squeezed together and their entries are automatically narrowed.v -The band o with the recesses formed in it comes over the guide roller y into contact with the base strip h and is stuck thereto, the recesses in the band o so being secured in their squeezed together formation. Pieces of desired length of the combined band and strip stuck together in this way are cut off, which can be used as packaging inlays having recesses With narrowed entries, suitable for the reception of elongated objects as for example glass ampules or the like.
The holding back of the cross-rods a necessary for the formation of recesses with narrowed entries, can also be brought about by arranging the caterpillar-like circulating member not horizontally as in Figure l, but vertically, in which case the holding back is ensured by the weight of the cross-rods a and a braking member becomes unnecessary.
It is to be noted that the inlay is made continuously from two sheets of suitable material. The sheet o being initially formed with sub stantially equal or uniform corrugations by the interaction ofthe members e, c and the rods or mandrels a. The mandrels a determine the configuration and size of the recesses of the inlay. The corrugations which lie intermediate of two adjoining mandrels, while the sheet is still under the `influence of the members e and c', are converted, as they leave the influence of said members, into ribs or beads as shown both in Figs. l and 4 by the interaction of the braking member m and the arrangement whereby each mandrel a may advance to squeeze the walls of such corrugations together (see Fig. 4") and thereby form the ribs or beads. The ribsor beads are not formed by the use of an internal mandrel, but the material thereof is permitted to freely flow or mold itself to such configuration, as it tends to assume, by reason of the squeezing or extruding action of the mandrels a and the braking member m. Contact of the under side of the mandrel supported recesses, with the adhesive on the sheet h, is made after the beads have been formed, but while they are still retained under the influence or Ysupported by the mandrels a in order that the contours of the recesses remain fixed. The mandrels leave the recesses, after the adhesive is setsuiciently to fix the contour of the recesses, as is illustrated in Fig` 1 by the divergence of the inlay from the path of travel from that of the mandrels, the inlay readily exing to permit the mandrels, successively, to pass out of the recesses.
What I claim is:
1. In a machine for the production of packagtheir traverse of the working zone so closing them l.
together and producing narrowed entries to the recesses, and means for leading -a base strip to the terminal end of said working zone and there sticking said band to said strip after the recesses with their closed entries have been formed in the band. v
2. A machine as set forth in claim 1 wherein said working zone is horizontal and the means for holding said rods back is a braking member engaging them. y
3. A machine as set forth `inclaim 1 wherein said working zone is vertical, the weight of said rods constituting the means for holdingthem back.
4. A machine as set forth in claim 1 wherein said working zone is horizontal, the machine also including aY guide table over which said rods and the band run during their traverse of the working zone, said table being slotted near its terminal end, and a guide roller entering the slot from below, the base strip being led over said roller, through the slot and over the terminal part of said table.
5. In a machine for the production of packag- -ing inlays lthecombination of a plurality of cross rods, slotted chain members connecting the ends of successive rods to constitute a closed loop member in which the rods have longitudinal play, freely rotatable means over which one of said loop member runs, a, pair of driven chain wheels axially spaced over which the other end of said loop runs, a table guiding the slack run of said loop member, a toothed roller engaging between said rods in the region where they leave said chain wheels so that a band led between said rods and roller and over said table will have recesses formed in it by the co-operation of said rods and roller, means holding back the rods during their passage over the table, said table so closing them together and narrowing theentries of the recesses in the band, and means for leading an adhesive-coated base strip between the terminal part of said table and the band so that the band is stuck to the strip.
v6. A machine as set forth in claim 5 wherein said table has a Yslot near its terminal end, the machine also including a guide roller for the strip located behind said table and entering the slot therein.
7. A machine as set forth yin claim 6 also including alpair of feed rollers between which the strip passes and is thereby fed to said guide roller, y
one of said feed rollers also constituting an adhesive-coating roller.
REFERENCES CITED The following references are of rrecord in the le of this patent:
UNITED STATES PATENTS