DE7327513U - Device for the production of labeled plastic articles in the deep-drawing process - Google Patents

Description

ADOLF ILLIG HEILBRONN, 25-7-1973

MECHANICAL ENGINEERING

DEVICE FOR THE PRODUCTION OF LABELED PLASTIC TOUGH ARTICLES IN THE DEEP-DRAWING PROCESS

The innovation relates to a device with which labeled plastic articles are made from a thermoplastic plastic film be made by deep drawing. The labels are inserted in a manner known per se by the Opening of the mold through which the plastic film is also deep-drawn. The label bonds during deep drawing with the surface of the plastic article.

Since the film strip runs over the mold for the plastic article in such devices, it is known to have two shapes or the formation and to the side of it in one of the loading stations are located. The feeding of the labels is known to be done by hand, which is time-consuming and unsafe or with round plastic articles by feeding a label tape into an auxiliary form above the actual container form. In this is the label tape inserted through a tangential slot in the mold wall, cut and then down passed in the form.

However, this device can only be used with round containers and all-round labeling. She is suitable not for example square containers with a label on one side wall.

It was the task of the innovation to create a device that makes this possible. According to the invention, this is achieved by that individual stacks of labels are arranged in the loading stations laterally over the form, from which over Suckers and a lever linkage individually remove the labels and transfer them down into the mold. There will be it is held on the mold wall with a vacuum until the plastic article is molded. An execution game the innovation is described in more detail with reference to the schematic drawings. It shows:

Fig. 1 is a longitudinal section through the device.

2 shows a longitudinal section through an insertion station linko when picking up, right when inserting a label.

3 shows a cross section through the forming station.

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The device consists of a base frame 21 with a roller holder 1, of which the to be deformed Plastic film 2 is pulled off the roll 3. A suitable transport system (not shown) is used for this purpose. A heater 4 heats the plastic film 2 to the required deformation temperature before it is fed to the forming station 5 in cycles.

After molding, the plastic items are placed in the Punching station 6 separated and transported away.

Before punching, the plastic items, for example yoghurt pots, can also be filled and sealed. take place so that finished packaging leaves the machine after punching. The lead frame is wound up or shredded.

The forming station 5 is now described in more detail.

On a molding table 7, which can be moved in height mechanically, pneumatically or hydraulically, there are two molds or Form groups 8, 8 'arranged horizontally movable. Together they can be perpendicular to the direction of advance of the Plastic sheet 2 are moved so that the shapes 8.8 "to the left and right of the plastic sheet come in the so-called insertion holes 9 and 9 * In these, a stack of labels 11 is stored in a stacking shaft 12 for each mold cavity 10. This is preferred Arranged at an incline at about 45 ″. The labels 11 are removed by means of suction cups 12 by applying a vacuum. Each suction cup 22 is seated on a lever 13 which is mounted in a transverse bridge 14 at the pivot point 15 is. The lever 13 is connected to the cylinder l8 via lever 16 and crosspiece 17. Its lifting movement causes the lever 15 to pivot, inclusive of the suction cup 22 in the position shown on the right in FIG.

The cylinder 18 sits on a bridge 19 which is attached to the Cross bridge 14 is attached. Bridge 19, cross bridge 14 and all of them are connected via the lifting cylinder 20 Parts movable in height, so that the pivoted lever 13 with the label 11 sucked on the sucker 12 after can be moved down into the mold cavity 10 (position Fig. 2 right). The suction on the mold wall of the mold cavity 10 is also carried out by vacuum, whereby for better adhesion one point on the mold wall is known per se Way can be formed by sintered metal.

If a piece of heated plastic film has now been transported into the molding station 5, the molding table is raised

7 and in the form in the forming station

8 or 8 'takes place the molding of the plastic articles due to differential pressure and the cooling of the plastic material During this time, the labels will be 11 in

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the inlay acetate 9 or 9 * inserted. Well the lowering of Formtisohes 7, the common seltllohe Versohleben of the forms or groups of forms 8, 8 'does not take place illustrated devices, for example pneumatic cylinders, so that the forms provided with labels 11 8 or 8 'in the forming station 5, the empty forms 8 or * 8 * come to rest in one of the loading stations 9,9 ' Then, after the transport of the plastic film 2, which was carried out at the same time, takes place again by an inch Upward movement of the molding tool 7 and the molding of the next use with simultaneous labeling of the surface.

Depending on the size of the mold, it is of course also possible to remove labels from two stacking tubes 12 and transfer them to a mold cavity 10. In that case it would then each plastic article will have two labels facing each other.

7327S1ti3.ti.73

Claims (1)

I I PROTECTION CLAIM Device for the production of labeled plastic articles from a heated thermoplastic plastic film in the deep-drawing process, which is cycled to a forming station, possibly a filling and sealing station and a
Punching station is fed and in which two forms or groups of forms (8j8 ^! ) Are mounted laterally displaceable so that they can be moved between the forming station and one of the loading stations (9 »9 '), characterized by ir, the loading stations (9 * 9 *) stacking shafts (12) arranged above the molds (8, 8 ') for receiving labels (11) as well as pivotable and vertically movable levers (IjJ) with suction cups (22) for receiving the labels (11) = 732751313.1173