RU2658051C2 - Method of the film into the plastic products manufacturing mold feeding - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to automated installations (injection molding machines, autoclaves, etc.) used in the plastic containers manufacturing using the fused label technology in industrial amounts, invention also relates to film feeding plants for its further processing, at that, under the film it is necessary to understand any thin sheet material, with thickness of not more than 90 micron, consisting of polypropylene, paper, metals (including nonferrous ones), and also combinations thereof. Thin sheet material in the roll or sheet form is installed in the feed section in the form of a pusher or coil, which is driven by a motor, next, the thin sheet material is fed into the die cutting section, where cutting can be done with punch knife, punching counter knife cutter and die, cut with a laser, above the cutting section the thin sheet material outline template plate is arranged, next, separation of the cut, cut-off or cut-out thin sheet material of the desired size from the roll or sheet occurs without joining or storing with other cut thin sheet material workpieces, after which cut workpiece capture and the feed into the mold immediately takes place, to the molded article or to another necessary object. To increase the production capacity, it is possible to place these sections in series, this will allow simultaneous capture of several cut, cut-off or cut-out labels.

EFFECT: invention enables prevention of the films bonding due to the static electricity accumulation, equipment and production process simplification and cost-cutting.

1 cl, 4 dwg

Description

1. Name

The method of feeding the film into a mold for the manufacture of plastic products (hereinafter - Method)

2. The technical field to which the invention relates.

The invention relates to automated installations (injection molding machines, autoclaves, etc.) used in the manufacture of plastic containers using smelting label technology in industrial volumes, the invention also relates to installations supplying a film for its further processing, and any thin-sheet material, with a thickness of not more than 90 microns, consisting of polypropylene, paper, metals (including non-ferrous), as well as a combination of these materials.

3. The prior art

When molding plastic products, several methods are used, namely:

- blowing into the mold (there are many such methods, one of them is given in patent No. 2507068, information on this patent is available on the FIPS official website at http://www1.fips.ru in the section: “Open registries”);

- vacuum molding (information about this method is taken from the official Wikipedia website located at:

https://en.wikipedia.org/wiki/%D0%92%D0%B0%D0%BA%D1%83%D1%83%D0%BC%D0%BD%D0%B0%D1%8F%D1 % 84% D0% BE% D1% 80% D0% BC% D0% BE% D0% B2% D0% BA% D0% B0);

- injection molding (information on this method is taken from the official Wikipedia website located at:

https://en.wikipedia.org/wiki/%D0%9B%D0%B8%D1%82%D1%8C%D1%91%D0%BF% D0% BE% D0% B4% D0% B4% D0 % B0% D0% B2% D0% BB% D0% B5% D0% BD% D0% B8% D0% B5% D0% BC);

- hot stamping (information about this method is taken from the official Wikipedia website located at:

https://en.wikipedia.org/wiki/%D0%A8%Dl%82%D0%B0%D0%BC%D0%BF%D0%BE%D0%B2%D0%BA%D0%B0).

For all these methods, in fact, there is only 1 way to feed the film - feeding such a film with a robotic arm (grab), which captures a pre-cut to the required size and placed in a special holder (store), and grab the film with a grab using special suction cups using vacuum or static electricity. In this case, only a special IML film can be used as a film, in which the level of static electricity and the ability to charge with such electricity is practically zero. This effect is achieved due to special additives in the manufacture of IML-film.

Holding the label in the mold at the desired position is ensured by electrostatic voltage (very rarely by vacuum), while the mold must be made for IML technology so that the injection of material does not lead to a shift in the position of the label. The label on the robot arm is held by a vacuum.

In Russian patent No. 2203189 (information about this patent is taken from the FIPS official website at:

http://www1.fips.ru/wps/wctn/connect/content_ru/ru/) a method for dividing a certain number of partially superimposed flat products is disclosed. The method is characterized in that a static charge is created on the surface of the flat products lying on top of each other, for which the foot is exposed to a direct current electric field, the lines of force of which are directed mainly perpendicular to the surfaces of the products in the foot. As a result of the action of the electric field between the surfaces of the products, forces arise that increase the mutual adhesion of the products. This force of mutual adhesion of the products in the foot is eliminated or reduced for at least one of the two adjacent surfaces of adjacent products at the point of separation. For this, at least one of these surfaces is pre-treated with an antistatic agent, as a result of which the charge concentration does not occur at the point of separation or decreases. This accordingly leads to the fact that at the point of separation there is no adhesion gain or it becomes much less than the adhesion force between the raw surfaces of the products. Using the invention provides a reduction in the force required to displace the parts of the foot relative to each other when it is separated in a predetermined location. The disadvantage of this method is the need to treat one of the surfaces of a flat product with a special antistatic agent, which leads to a higher cost of the separation process, the complexity of the equipment for separation and increase the time for separation.

In another Russian patent No. 2087405 (information about this patent is taken from the FIPS official website at:

http: // www1. fips.ru/wps/wctn/connect/content_ru/ru/) describes a device for separating thin sheet products stacked in piles, and their single issue. This invention can be used for labeling or attaching labels to the surface of packages. The device comprises a magazine with a stack of sheet products, made sliding, with loading from above, movable around the axis of the separator roller. The pinch roller is mounted on a spring-loaded swingarm. The suction roller-separator is made in the form of a hollow sleeve with a toothed rim and a persistent protrusion at the end, with a perforated flat on the cylindrical part, mounted on a fixed axis with a through channel having a message with perforation on the flat when grabbing a sheet product, and installed under the edge of the store in a position that provides parallelism of the location of the flat in the initial position of the lower sheet product. The device has a conveying element made in the form of a perforated drum with a gear sector at the end, mounted on a hollow axis, the through channel in which provides communication with the perforation of the drum, and kinematically connected by a gear transmission with a separator roller. The pinch roller is installed with the possibility of passive rotation on its axis and moving parallel to the axis of the separator roller along the trajectory of the pendulum arm. The device also has an air distribution system. The disadvantages of this invention is the complexity of the equipment for its implementation and, as a result, the cost of the entire production process.

It is also necessary to note the general disadvantages of these inventions according to Russian patents No. 2203189 and No. 2087405, namely, the method and devices in these patents are not able to feed sheet material (for example: VORP film, aluminum foil), stacked, because these materials have great potential for the accumulation of static electricity, which holds these products together and does not allow them to be separated from each other in the process of supplying such films for attachment to other objects (metal, paper and plastic containers). Another disadvantage of the specified method and device is that for the supply of sheet material, such material must first be cut into the required size and placed in a special place (store).

Because The method includes all these analogues, then it is not possible to isolate any closest analogue.

The technical problem to be solved by the Method consists in the absence of a Method that allows applying a film for further processing (soldering, gluing, printing and other operations) from any materials, in particular plastic, metals, paper or a mixed film, at any level of static and without preliminary preparation of the required size and processing with special antistatic materials.

The reasons that serve as an obstacle to the solution of this technical problem are the complexity and high cost of equipment and materials used to feed the film, difficult storage conditions to prevent the accumulation of static charge, the large statics of films without antistatic coatings, and special varnishes that hold them together and preventing the use of the Method on an industrial scale.

4. Disclosure of the invention.

The invention is a method that allows you to cut and prepare for feeding the film for further processing (soldering, gluing and other processes). This method consists in the following: the sheet material in a roll or sheet form is installed in the feed section in the form of a pusher or reel, which is driven by the engine, then the sheet material is fed into the die cutting section, where the cutting can be done with a knife, a cutting knife and a stamp, cut out laser, above the die cutting section there is a template plate along the sheet-metal office, then the cut, cut or cut-out sheet material is separated at the desired time a measure from a roll or sheet without joining or warehousing with other cut blanks from sheet material, after which the cut blank is immediately grasped and fed into the mold, to the molded product or to another necessary object. At the same time, by capturing and feeding the freshly cut film, the problem of bonding the films due to static electricity is solved, the equipment and the production process are simplified and cheapened, the number of scraps is reduced, and there is no need for a store in which the film of the required size is put. To increase production capacity, it is possible to place these sections in series, this will simultaneously capture several carved, cut or cut labels.

5. Brief Description of the Drawings

The figure No. 1 shows the Method for cutting down the film. The figure No. 2 shows the method for laser cutting of the film. The figure No. 3 shows the method when using the knife cutter. The figure No. 4 shows a film embedded in a mold.

6. The implementation of the invention

The method is intended to simplify and reduce the cost of supplying a film of any material for fusion, gluing and other processes associated with attaching the film to the product.

This Method is implemented as follows: a device is attached to the necessary equipment (injection molding machine, autoclave and other machines) or a complex is placed next to it containing devices for feeding film (3, 4), cutting, (die cutting or punching) film (7), capture of cut film (2) and the device for feeding it to the right place for further operations (1). At the first stage of production, the film is fed into the feeding device (3, 4), then the feeding device moves the film into the die cutting section (13), cutting (5) or cutting (9), after the film is fed into the desired section, the film is cut, cut, cut according to the desired contour and size, after which immediately, without putting the label in a pile, transporting and moving the label to the store, it is grabbed by the grab (1) (with a robotic hand for gripping) and fed into the mold (14) or other necessary object for making further production processes. Such processes may include bonding, gluing, molding, and other processes.

In one of the private forms of using the Method, cutting down with a counter-knife is used (6). To do this, the film is installed in the feeding device (as an example of the feeding device, the driving (4) and driven (3) shafts are indicated). The film passes through the matrix (5), then the dies are cut out with a knife (6). Next, the cut-out film (7) is fed into the casting mold (14) using a gripping device - suction cups (2) and through a robotic arm - a grab (1).

In one of the particular forms of application of the Method, laser cutting is used (8). To do this, the film is installed in the feeding device (as an example of the feeding device, the driving (4) and driven (3) shafts are indicated). The film passes through the stencil (9), then is cut out using a laser module (8). Next, the cut-out film (7) is fed into the casting mold (14) using a gripping device - suction cups (2) and through a robotic arm - a grab (1).

In one of the particular forms of application of the method, die cutting by a knife (10, 11) is used, consisting of a blade of knife cutters (10) and a platform of knife cutters (11). To do this, the film is installed in the feeding device (as an example of the feeding device, the driving (4) and driven (3) shafts are indicated). The film passes through the stencil frame (13), which serves as a support for the blades of the knife cutter (10, 11), which helps to evenly separate the label from the roll to the pusher (12), then is cut with the help of the knife cutter (10. 11). Next, the cut-out film (7) is fed into the casting mold (14) using a gripping device - suction cups (2) and through a robotic arm - a grab (1).

The above are known forms of implementation of the Method. It should be borne in mind that with the development of the prior art, the methods and forms of implementation of this Method may change, however, the essence of the invention, which consists in the Method of supplying sheet material to the desired forms for further production processes from changing methods and forms will not change.

Claims (1)

A method of supplying a film to a mold for the manufacture of plastic products, including the use of sheet material with a thickness of not more than 90 microns, consisting of polypropylene, paper, ferrous and non-ferrous metals, as well as a combination of these materials, characterized in that the sheet material is in a roll or sheet form is installed in the feed section in the form of a pusher or coil, which is driven by the engine, then the sheet material is fed into the die-cutting section, where the cutting can be performed with a knife, cut to with a knife and stamp, cut with a laser, over the die-cutting section there is a template plate at the sheet-metal office, then the cut, cut or cut-out sheet material of the desired size is separated from the roll or sheet without joining or storing with other cut blanks of sheet material, after which it immediately occurs capture of the chopped billet and feeding into the mold, to the molded product or to another necessary object.

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