SU1541118A1 - Device for packing material in polymer film - Google Patents

Abstract

The invention relates to a packaging technique, namely, devices for packaging in a plastic film, and can be used in various industries. The aim of the invention is to improve the quality when packing heavy bulk material. The device comprises a roll holder 1 with a polymeric film 2, a mechanism 4 for forming transverse seams with a knife 10 fixed on it to cut the bags from the film web, a mechanism 5 for forming a longitudinal seam, a device 6 for limiting the deformation of the bag when filling in heavy granular material and a device for leveling the edges package necks, consisting of two plates, which are fixed on a common axis. The device 6 is mounted for movement in the vertical and horizontal planes along the guides 13 and 12. Such an embodiment of the device makes it possible to prevent the package filled with heavy bulk material from deforming before welding the transverse seams and separating it from the polymeric film web longitudinal seam welding, which in turn improves the quality of packaging. 4 il.

Description

The invention relates to devices for packing material into a heat-sealable polymer film and can be used in mechanical engineering, instrument-making, light and other industries.

The aim of the invention is to improve the quality when packing heavy bulk material.

Fig. 1 shows schematically a device for packing a material into a plastic film at the time of filling the material into a bag, side view; fig 2 is the same; view from above; Fig, 3 shows the device at the time of welding of the package aperture, general view Fig, 4 - the same, top view.

The device comprises a roll holder 1, with a heat-sealable polymeric material 2, a guide 3 of a polymeric material 2, a mechanism for the formation of transverse seams, a mechanism 5 for forming a longitudinal seam, a device 6 for limiting the deformation of the package, a device for leveling the edges of the package neck, a loading tray 8 „

Mechanism A of forming transverse seams is provided with two jaws E on one of which two thermo-sealing elements are installed, and a knife 10 is fixed between them. Mechanism 5 of formation of a longitudinal seam is also equipped with jaws 11f on one of which a heat-sealing element is installed,

A device 6 for limiting the deformation of the bag is mounted on the guides 12 and 13.

A fixture 7 for leveling -flasks of the package neck is mounted under the mechanism 5 for forming a longitudinal seam and contains two plates k, pivotally mounted on a fixed axis 15

The device works as follows.

The polymeric material 2 is unwound from the roll holder 1 and pulled in a device that encloses the guide 3 with the fixture 6 in it to limit the deformation of the tongue 85a. A film is pulled between the jaws 1 1, which are then closed and form a transverse seam.

The device 6 along the guides 2 moves by a step equal to the length of the packet in the direction of the mechanism 5

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development of a longitudinal seam and loading tray 8, in this case, the polymer film is pulled, which fits the device 6 tightly,

The mechanism for forming the transverse seams is turned on, the jaws 9 converge, and two transverse seams are formed. Then the bag is separated from the film web by the knife 10.

The device 7 for leveling the edges of the neck of the bag moves upwards, the plates 1 t are rotated around the axis 15 and form a horizontal plane. The package is prepared for filling bulk material into it. In loading tray 8, the material is poured into a bag (Figs 1 and 2),

After the bag is filled, the device 6 for limiting the deformation is removed from the bag by moving upwards along the guide 13.

The plates k of the device 7 are lowered, the bag is curved along the axis 15 and the edges of its neck are straightened. The longitudinal seam formation mechanism 5 is turned on, the jaws 11 are closed, the longitudinal seam is welded, the bag is sealed. At the same time, the device 6, along the guides 12, goes backwards and lowers along the guide 13, taking up space inside the guide 3 of the polymeric material 2.

The plates rotate around the axis 15, forming a horizontal plane, the device 7 bends, the bag slides into a container (not shown). The device 7 returns to the vertical position, the plates I are lowered, turning around the axis 15,

The cycle is repeated starting from the moment the tool 6 is moved in the direction of the longitudinal seam mechanism 5.

Such an embodiment of the device makes it possible to prevent the package from being deformed by welding the transverse seams and separating the film from the web, and to improve the quality of welding of the longitudinal seam by straightening the edges of the package neck before welding.

Claims (1)

Apparatus of the Invention A device for packing a material into a polymeric film comprising a roll holder, a mechanism for forming transverse seams, figs f ( Editor S.Pekar Compiled by V.Garipov Tehred M. Didyk Order 257 Circulation 522 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., T./5 Production and publishing combine Patent, g, Uzhgorod, st. Gagarin, 101 Proofreader E. Lonchakova Subscription