DE3605323A1 - MACHINE FOR EXTRUDING PLASTIC - Google Patents

Description

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19th February 19

COEXPAN, S.A.

San Fernando de Henares (Madrid)

Spain

Machine for extruding plastic

The subject of the present patent application is a PLASTIC EXTRUDING MACHINE, the essential new properties those known in this field and for the same purpose for which these properties are determined and designed are, applied systems brinqt.

\ pj The above machine serves or is used for the production of different colored tapes or foils, for which a proper investigation was carried out, whereby the subject of the present patent description, the most significant remarks of which are explained in the following, was planned and carried out. Attempts have been made to find an improved plastic extrusion machine than the one currently on the market, and which is capable of producing multicolored ribbons either by gluing small colored elementary strips, which is a very expensive process, or by extruding them in different rows, which is complicated and at the same time unreliable designs result, are based.

A. Said machine is based on the production of plastic tapes or films by means of adjacent strips of material, these being of different colors Strips have all of the advantages that can be used for making various Products with these foils are required. The pipes through which the different colored plastics flow have a horizontal one Exit, with the lower part - a white ground serving as a holder Has plastic extrusion extruded through i. '. The lower part, to adhere to the rest of the plastic extruded over it.

The plastic material of the upper base is preferably a clear one Gloss, which gives the film a uniformity and tint in ribbons, as you get them in the central part. The basic colors of the plastic surface are in a central area, with all extrusion being done through the center of the extrusion machine, and the feed lines of the melted plastic are attached in Länqsrichtunq up to the die, from where the drain is carried out. The one flowing through these supply lines The flow rate is regulated by means of a threaded pin ending in a nut head, this pin for throttling the liquid Plastic flow and thus serves to regulate the flow rate of the plastic.

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The whole extrusion machine is made up of interconnected, one konipiikto Muschino-forming parts of the body.

The main part of this extrusion machine is inside the machine, and although in a low position; it is entrusted with the formation of ligaments and exists from two adjacent parts, the lower one from a prismatic Body, the front end of which has a triangular shape. At these lower ones Body is screwed onto the upper detachable body, which consists of a single Piece consists and with a number of triangular, outwardly diverging Wells is provided over which the plastic is deposited, wherein the parts at the exit form the elementary range of each color over which has the whole of the film to be formed, with this great interchangeability is achieved primarily that the piece to be machined of little Extent and therefore low in cost, depending on the needs of the width of the elementary ribbons to be designed can vary.

The part so described is with an interchangeable intermediate part or a replaceable intermediate plutte; through this interchangeability, the different colors that are obtained during manufacture, to one or the other other output channels. First and foremost, you have one prismatic, right-angled entrance plate, the optional 3 horizontal corrugations when three colors are used, so one more or less Has corrugations, depending on the available colors; these corrugations are located in the front part, and the molten plastic is fed to them through the feed openings, which are completely isolated from one another, by the plastic of each is distributed into their associated horizontal grooves. In the second line and next to this input plate is a prismatic, replaceable - Intermediate plate available, which enables the effective exchange of the available standing colors allowed and carried out in the exit channels, whereby there are some round openings in the front and next to the entrance plate, which are located at different heights to the horizontal groove; this height is selected by the input plate in order to allow the passage of the * desired color by making this opening with the panel face being connected and ending in the center thereof; that means that the openings which take on the color of the lower part, in an elongated hollow to the upper part End part, and that their extreme end coincides with the central part. In contrast, the openings have the same color as the upper horizontal groove assume an identical elongated trough in its front extreme end

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downwards, bia osi coincides with the center of the plate, while the Openings that take on the color of the horizontal intermediate groove, a round opening are without grooves, due to the fact that this opening stops in the central area.

As a result of this intermediate plate, which ends in centered openings, is the central lower body of the machine present, consisting of an elongated, rectangular prism is formed, which in its front part and in the upper Area has a triangular end piece. It also has the vertical distribution channels for the plastic with the flow regulating screws in the upper ends are attached, which hold each of these feed openings at their corresponding triangular shape of the lower part, which for the elemental bandwidth is responsible. To these previously mentioned The supply comes from vertical channels by means of horizontal openings which the feed comes from the intermediate plate.

In this way it is very easy to verify that just by yourself the replacement of the said intermediate plate and the subsequent adaptation of the openings to any ribbon color without the necessary and costly Changes to pieces of difficult processing can be distributed; like, for example, if there are three on the input plate from bottom to top Farbenj / .dieogfi.lbj- ^ grühi and red wine can be distributed in the horizontal grooves then, if we want the first band to be yellow, the intermediate plate would have to have an opening on its front side and in contact with the input plate have at the bottom that catches this yellow color and brings it to the center of the front; however if we have a green colored tape first want to have, the opening would be in the central area, with this Paint is caught by the horizontal intermediate groove and brought to the center of the front; however, if the first band be of red color should, the intermediate plate should have the opening on the top, namely in accordance with the upper groove to catch the paint and put it up Brinaen to the center front.

This main section, which is described in detail and left in the lower part, is referred to attached the upper inner part, which is formed from a straight parallelepiped, which in one of its side ends is an extension in the form of a triangular Has tip. The vertical line openings for the Plastic attached, the extensions of which are vertical and the outputs of which end in horizontal LoiUingarinnen.

Ala Huuptuuouuntuilu iut üin fouteo, lower part present * enY * da3 in the middle ainor prismatic, unreyeimiform shape is formed from flat, at acute angles ending sides ⁵ ^ surfaces. This part has obliquely continuous openings along its length, which are formed from two lengths of different inner diameters, where the retaining screw are attached. The upper part of this part serves as a guide zone for the plastic at its exit, while the inclined inner side surface serves as a guide surface for the molten plastic, whereby it serves as a base surface for the film formed from the interconnected different colored bands.

The main outer part is also made of an irregular, prismatic part formed with flat side surfaces, whereby on the outside and in the upper area there are successive, has prismatic extensions that are separated by recessed areas with arched endings. Located on each of these upper appendages There is a continuous threaded opening through which the regulating screws for the thickness of the extruded plastic film are inserted. At the bottom Part there are also external appendages separated from one another by deep parts with arched endings; have these lower processes circular openings through which the ends of the regulating screws are inserted and by screwing them on, the lower area of the part can be deformed, in this way the height of the outlet channel for the art-> substance is reduced. In the vicinity of these lower parts there are vertical gutters through which the material degradation and thus the deformation ♦ this outermost part can be achieved.

However, the following detailed description refers to the enclosed Figures showing a preferred form of implementation as an example and without restrictions.

Figure 1 shows a main cross-section of the extrusion machine. Figure 2 shows the upper main part of the machine.

Figure 3 is a side view or cross-section of the lower part of FIG Machine.

Figure 4, a perspective view of the same, previously dismantled part.

Figure 5 shows an assembly diagram and the start of operation of the input plate and the intermediate plate in the machine body.

Figure 6 shows a front view of the input plate for the plastic.

Figure 7 shows a front and rear view of the intermediate plate.

Figure 8 shows the dna öbure outer part of the extrusion machine.

Figure 9 shows the lower outer part of the machine shown. £

In Figure 1, the extrusion machine is shown in a cross-section, in dom aich the most important parts of the machine are located, like the oburo inner part 1, duu serves the plastic as a conductor via parallel openings, whereby on this part flow regulator of the molten plastic which have stud bolts of smaller diameter at their outer ends, the introduction of which into the transport lines restricts the flow rate and therefore can be regulated.

Part 3 is the lower inner part of the machine, which also has central openings has to guide the plastic, as well as to guide it through its side openings. The part 4 consists of the upper outer part of the machine, which is with

Adjacent screws attached to the central body of the machine is. On its outer part there are screws attached next to each other present, which connect the upper and lower part with each other, and through whose thread enables the separation of both parts and therefore the reduction the thickness of the: plastic that comes out of the front end.

Part 5 represents the lower outer part, the upper end of which is the drain to the outside of the plastic allows, while the part itself means side by side attached screws is attached to the machine body.

Figure 2 shows the upper inner part of the extrusion machine, which consists of a straight cuboid is formed, on the front surface of which is a triangular Part is located. This part consists of supply lines for the middle, different colored Plastic, while the upper lines 8 in the case of plastic feed can be used for the surface of the molded tapes. This area is used to give the end film a uniform and translucent surface admit. This part also has upper ones. Openings through which one Bushing is inserted and in which the regulating screws for the KunntstoffdurchflunainHruja to be turned around. These screws consist of one with fiiriom Gowintlu voruuhunon zone near the screw heads, and one undoor Stud, dtiutien the task is to insert the flow rate to throttle the plastic.

The different colored plastic slides over the lower one at the outlet Surface of the machine 10, while the surface of the outermost three-tier zone II 7tim is used to slide the plastic surface, which is normally made of translucent Shine is.

Figure 3 shows the profile or side view 12 of the lower part of the Machine shown, which consists of a prismatic, rectangular body, which has a triangular exit 13 on its front. That part will

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another, upper, detachable part 14 is attached, which is subsequently matches the previous one, with a series of triangular ribs, of which only the profile 7u can be seen in this illustration, since they are in their central area are deeper than at their front ends.

Figure 4 shows a perspective view of the part of Figure 3, disassembled State. In this much more explanatory view, the main body 12 can be seen with its triangular extension 13, and that as a consequence of the previous part shaped part 14, which in its upper region has a series of triangular corrugations 16, which with the formation of the elementary ribbons by means of its previously established width and through its outermost exits. The two panels are matched by their Screws tightly inserted through the openings 17 of the top plate and screwed into the threaded openings 18 of part 12 will. In this way and by replacing a single part, in this case the 14, the bandwidth can be increased with the corresponding material, Working time and manpower savings changed to a lesser or greater extent will.

Figure 5 shows an assembly diagram of the input plate and the intermediate plate in the upper machine body; In this figure, the entrance plate consisting of a straight cuboid can be seen with great clarity, which has three horizontal corrugations or notches, shown by 19, 20 and 21 for the three basic colors adopted by the invention, although these are by no means are restrictive and are each fed from the three or more inlet openings 22, 23 and 24, so and in this way the distribution of a reached each plastic tube in each of its corresponding horizontal grooves will. In the vicinity of the input plate 25 is the intermediate plate 26, of identical external shape as the previous one, which oie position of the changeable Has openings, depending on the color available in each band, why the back of the said plate is the entrance to the molten plastic at the same height as the color and thus also with the horizontal Has grooves that you get in this way; i.e., if the available color is needed below, the opening is in the lower part when the needed one is needed Color is in the upper groove, the opening in the with of the associated groove is brought to match the upper area, and if, on the contrary, the color of the middle groove is required, then the opening also attached with the groove centered. These openings must also be continuous, and go all the way to the front, keeping them all in their middle Part match; that is, the opening that is made by the lower zone 27 goes out, endot in an elongated trough upwards 28, so that its end in the middle Part stops. In the .Gogoruiot / to this, the off-

tion at its front end a downwardly elongated groove 30, which at its End coincides with the central plate part, and also the central opening 31 is continuous and coincides with the center 32 üoerein, all these openings result in a set of parallel openings 33, which feed the form-giving means for the ribbons.

Figure 6 is a front view of the plastic 25 input plate on which the horizontal grooves or grooves 19, 20 and 21 can be seen, each of them distributed a color and correspondingly from the entrance openings 22, 23 and 24 are fed.

Figure 7 shows a front and a rear view of the intermediate plate, where in the lower part the rear view with the receiving openings for the plastic 34 shows a Jew depending on the color desired, and therefore in accordance with one or the other, located at different heights, horizontal grooves, such as 19, 20 and 21, and therefore up, down or moved centered. These openings are connected to the front jeil and they all run to the center of the plate by means of the corresponding elongated grooves hina.us, upwards the lower 35 or downwards the upper 36, since the central openings 37 do not have such grooves, since they already have are centered.

Figure 8 shows the upper outer part of the machine, which consists of a non-regular Body with straight walls consists of several openings in the longitudinal direction comprises 38 for the purpose of securing the part to the base of the body, whereby he has continuous parts on the outside and at the ends that are properly connected to each other are separated, each of them having an opening for the insertion of the screw ends regulating the initial thickness to achieve the best deformation this entire lower end there is a vertical corrugation, which also at the upper end protruding parts 41 has the threaded openings have in order to be able to introduce the hegulation screws.

The line of the Kunututuffa is reached via the lower inclined side 42, and its exit by means of the lower horizontal part 43, which is movable and can regulate the thickness of the Kunntatoffoil.

Figure 9 shows the lower outer part of the machine, which consists of an irregular Body with rjuradon walls that has 44 horizontal openings through which the BofestiqungBunhrnuhnn of the part are introduced. Through this part can the plastic can be passed over the inclined upper side 45 and the end portion 46.

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After the subject matter of the present patent description is sufficient Manner is described, it is found that within its essentiality multiple, equally protected detail variations can be introduced may harm the whole or its parts, with the selected components and this means of implementing the system, or other changes can be any.

Claims (6)

· «Β« Λ β PATENT CLAIMS ο ο η C ο η ο O D U 0 O Z 0 1) Machine for extruding plastics, characterized in that they have four main parts, two inner and two outer, with the upper inner main part consists of a rectangular straight parallelepiped, which has a triangular tip on its front side and through its interior vertical feed channels for comprises the plastic; the flow rate is regulated by means of screws that terminate in their corresponding studs, which through its insertion pass through a thread that restricts the supply lines of the molten plastic. 2) Machine according to claim 1), characterized in that the lower inner part is formed by means of two bodies, the first or base in the form of a straight parallelepiped with a triangular front end, on which the second part or top plate is attached by means of its corresponding threaded screws is; the shape of this second part or top plate is carried out as a continuation of the former, this being of low height and outwards has diverging, triangular grooves that determine the thickness of each of the base films that make up the entire plastic tape. 3) Machine according to claims 1 and 2, characterized in that the ^"r upper inner body has übur an input plate for the molten plastic, which iat constituted by a rectangular, parallelipedischen body, * preferably 3 horizontal, has parallel grooves, each for a required color, which are fed through their corresponding inlet openings for the plastic. 4) machine according to claim 3, characterized in that it has has an intermediate plate as a continuation of the input plate, which has the same external shape as the input plate, and the input openings for the Plastic, each of which is at the appropriate level to receive the plastic from the upper, middle, or lower channel, and to the Connection to the front of the plate by means of a continuous opening, with the upper openings ending in horizontal corrugations, or the lower towards obun so that the exit of the openings is in a central one Besition is located, which coincides with the feed openings to the distribution channels. 5) Machine according to claims 1 to 4, characterized in that it has an upper Auüuuntoil of irregular shape with flat walls, on the outside there is a row of rectangular, in the upper area with_, has a thread vurmihonu and properly separated parts, and a Rcühü A BATH ÜW * has lower rectangular parts that are also separated by central openings are separated so that the thickness adjustment screws for the plastic film can be inserted; the said part has in the lower area a horizontal groove, near the lower appendages, with the groove as a weakening serves to enable said regulation of the film thickness formed. 6) Machine according to claims 1 to 5, characterized in that extruding different colored plastic through the central area the machine and the exit of each color through each of the triangular ones Parts of the lower inner part takes place, with the extrusion of a plastic base film through the lower part and the extrusion of an upper protective film through the inside of the machine is carried out.