RU168283U1 - Device for thermal corrugation of a multilayer plastic film - Google Patents

Abstract

The utility model relates to devices for the production of corrugated products from multilayer film material, in particular for the production of carrying elements or loop handles, for example, shopping bags or bags made of polyethylene and is aimed at reducing the cost of production by simplifying technological production and reducing its energy consumption. technical is achieved by the fact that the device for thermal corrugation of a multilayer plastic film contains an unwinding stand with the possibility of ü installation of at least one roll of film, means for pulling the film, a knife for trimming the film, bends for removing scraps, broaching shafts, including two heated, having mutually engaging grooves. Rollers with film rolls and a winding shaft are equipped with cones that regulate the position of the roll, the surface of the heated shafts has uniformly alternating longitudinal or transverse grooves 1-15 mm wide and deep and protrusions 1-15 mm wide, and longitudinal openings for installing thermoelectric heaters are made in the shafts, and on the shafts, bronze rings are fixedly mounted, isolated from each other by fluoroplastic bushings and in contact with electrographic brushes placed in brush holders. Heated shafts are made of aluminum and coated with a thermal tape that prevents film from sticking. The heated shafts are made of a material that prevents sticking of the film, for example, of fluoroplastic or teflon. 4 ill.

Description

The invention relates to devices for the production of corrugated products from a multilayer film material, in particular for the production of carrying elements or loop handles, for example, shopping bags or bags made of polyethylene.

A known installation for zigzag folding of a strip film containing a pair of gear rolls for preliminary formation of folds, two corrugating tools for additional molding, installed with the possibility of interaction with the teeth of additional gear rolls, and a drive, while the corrugating tool is equipped with a compression spring (see the description of the patent RU No. 2113391, IPC B65H 45/20, B21D 13/04, publ. 1998)

The disadvantage of this device is that it is intended only for folding a strip film without subsequent winding it into rolls.

A device for corrugating a glass film is also known, where the film is pulled through the corrugating rolls by means of pulling rolls, then the film is corrugated and connected to a flat film and a pressure roll (see auth. SU. No. 499232, class C03B 23/02, publ. 1976 )

However, the disadvantage of this device is that for the corrugation of the film requires a substrate, which at the end of the process goes to waste.

The closest solution to the claimed utility model is a device for manufacturing a polymer film containing an unwinding stand, with the possibility of installing a coil of a flat sleeve film, the unwinding stand comprising a rotary unwinding device that is configured to unwind a flat sleeve film and rotate it around its longitudinally extending axial lines, mandrel, means for opening an elongated film to form an open sleeve and for pulling an open sleeve above the mandrel with screws m movement, a knife and a means for removing the spiral-cut film from the mandrel, tension rolls installed for rotation with a rotary unwinding device, for stretching the flat sleeve film in the longitudinal direction after it is unwound from the reel and before opening it for pulling over the mandrel, it is additionally contains stabilization means designed to stabilize the orientation created by the longitudinal tension rolls in the film cut in a spiral after it is removed from the mandrel. The stabilization means contains at least one heated roll, preferably several heated rolls (see description of patent RU No. 2498902, IPC B29C 69/00, B29C 55/06, publ. 2013).

However, the disadvantage of this device is that it carries out the cutting of the material, which complicates the complexity of the process, leads to increased energy consumption.

The technical problem is to reduce the cost of production by simplifying technological production and reducing its energy consumption.

The problem is solved in that in a device for thermal corrugation of a multilayer polyethylene film containing an unwinding stand with the ability to install at least one roll of film, means for drawing a film, a knife for trimming the film, bends for removing scraps, lingering shafts, including including two heated, having mutually engaging grooves, according to a utility model, the rollers with film rolls and the winding shaft are equipped with cones that control the position of the roll, the surface of the heated shafts has a uniform alternating longitudinal or transverse grooves with a width and depth of 1-15 mm and protrusions with a width of 1-15 mm, with longitudinal openings for installing thermoelectric heaters in the shafts, and bronze rings fixed to the shafts insulated from each other by fluoroplastic bushings and in contact with electrographic brushes placed in brush holders. Heated shafts are made of aluminum and coated with a thermal tape that prevents film from sticking. The heated shafts are made of a material that prevents sticking of the film, for example, of fluoroplastic or teflon.

The technical result consists in reducing the cost of the entire production by simplifying the technological production while reducing its energy consumption.

The utility model is illustrated by drawings, where in FIG. 1 shows a General view of the inventive device, FIG. 2 - clamping device; in FIG. 3 - clamp cone; in FIG. 4 - corrugated shaft; in FIG. 5 is a diagram of the operation of the device.

A device for thermal corrugation of a multilayer polyethylene film (Fig. 1) comprises a housing 1 on which a frame 2 and an unwinding stand are installed, which are holders 3 for rolls of film 4 placed on rollers 5 located horizontally one above the other. The film 4 is a sleeve or a sleeve made of at least two layers with a thickness of 100 μm and a width of 47 cm. In the upper part of the frame 2 there are long steel movable shafts 6 and 7 and a long steel fixed shaft 8. On the walls of the housing 1 are fixed a long steel movable the shaft 9 and the lingering steel fixed shaft 10. On the housing 1 is also placed movable corrugated aluminum adjustable 11 and the drive 12 shafts, lingering clamping steel movable shaft 13, lingering movable drive shaft 14 made of soft rubber, slide ny winding shaft 15 made of hard rubber or plastics, and the shaft 16, winding the finished fabric. The shafts 11 and 12 can be coated with a special thermal tape, or made of a material that prevents the adhesion of the film 4, for example, fluoroplastic, teflon, etc. The shafts 12, 14 and 15 are connected by means of a chain drive to motors 17, 18 and 19, respectively, equipped with gearboxes and located in the lower part of the housing 1, on which a long steel shaft 20 is also mounted. Knives are installed on the frame 2 between the shafts 8 and 13, 14 21 and bends 22 for trimming and deflecting the edges of the processed film. The shafts 11 and 13 are in contact with the clamping devices 23 (Fig. 2) mounted on the housing 1 and consisting of a screw 24 connected to a spring 25 placed in the housing 26 and in contact with the bearing 27. The rollers 5 and the shaft 16 are provided with clamping cones (Fig. . 3), regulating the position of the roll on the shaft. On corrugated shafts 11 and 12 (Fig. 4), bronze rings 28 are fixedly mounted, isolated from each other by fluoroplastic bushings 29 and in contact with electrographic brushes installed in brush holders 30. In each of the shafts 11 and 12 there are longitudinal holes for installing thermoelectric heaters TEN 31. The surface of the shafts 11 and 12 is a series of longitudinal or transverse protrusions and depressions having the following dimensions in cross section (Fig. 4A): a = b = c = 1-15 mm, based on the width of the carrying element (handle) of the bag.

Motors and thermoelectric heaters are connected to a stationary control cabinet (not shown in the figure).

The device operates as follows (Fig. 5).

Before starting the machine, the heating elements 31 are turned on. When the temperature reaches 205-210 ° C, the heating is automatically turned off by the operation of the machine connected to the machine (not shown in the figure). One roll of film 4 is placed on each of the rollers 5. By moving the cones, the edge of the film 4 is aligned in all the rolls. Then, from each roll, the required amount of film 4 is unwound manually and all layers of film 4 are combined into one layer. The connected layer of films 4 is pulled sequentially manually through shafts 6, 9, 11 and 12. Then through the control cabinet include a gear motor 17 of the shaft 12 pressed against the shaft 11, as well as gear motors 18 and 19. On the shafts 11 rotating around their axis and 12 through electrographic brushes installed in the brush holders 30, electric current is transmitted and the layers of the film 4 are thermally welded. The thermally welded film 4 passing through the shafts 11 and 12 is pulled into the cooling zone through the shafts 20, 7 and 8, stretched and clamped between rotation shafts 13 and 14. Then the cooled film 4 is passed through the knives 21 and bends 22 to trim the uneven edge and its removal. Passed through the shafts 13 and 14, the aligned film 4 is moved to the shafts 15 and 16, where there is an additional adjustable tension of the film 4 and winding into the roll of the finished multilayer corrugated sheet.

Claims (3)

1. Device for thermal corrugation of a multilayer polyethylene film, comprising an unwinding stand with the possibility of installing at least one roll of film, means for drawing a film, a knife for trimming a film, bends for removing scraps, lingering shafts, including two heated, having mutually interlocking grooves, characterized in that the rollers with film rolls and the winding shaft are equipped with cones that regulate the position of the roll, the surface of the heated shafts has uniformly alternating longitudinal or transverse grooves with a width and depth of 1-15 mm and protrusions with a width of 1-15 mm, and longitudinal openings for installing thermoelectric heaters are made in the shafts, and bronze rings are fixedly mounted on the shafts, insulated from each other by fluoroplastic bushings and in contact with electrographic brushes placed in brush holders . 2. The device according to claim 1, characterized in that the heated shafts are made of aluminum and are coated with a thermal tape that prevents the film from sticking. 3. The device according to p. 1, characterized in that the heated shafts are made of a material that excludes the sticking of the film, for example, fluoroplastic or Teflon.