RU2557622C1 - Unit for production of window section by additional extrusion - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to production of window section. Proposed unit comprises the main extruder 10 to fuse resin material and to compress and feed fused resin material to head 30, head 30 to output resin material shaped to section of definite shape, calibrator 70 to support the extruded section physical configuration and section cooler 90. Embossing roller 50 for creation of embossed patterns on section surface is arranged between head 30 and calibrator 70. Note here that said embossing roller has first ledge 53 made thereon and second ledge 55 made at said first ledge.

EFFECT: higher quality of embossed patterns, preservation of natural wood texture, fine appearance.

5 cl, 15 dwg

Description

The present invention relates to a plant for manufacturing a window profile having a natural wood texture using auxiliary extrusion (coextrusion) technology, and in particular, to a plant for manufacturing a window profile equipped with an embossing roller and a cooling device for manufacturing a window profile, such that the resin composition containing wood fibers was double extruded on one side, and embossing was formed on it, thus providing patterns having t ksturu wood.

During the extrusion process for the manufacture of a traditional window profile, as shown in FIG. 1, if a briquette or composite material of thermoplastic resin is introduced into the extruder 1 through the hopper 2, the material is heated by a heater located in the heating cylinder of the extruder 1, so as to melt to a gel state, it is transported by rotating the screw screw and then extruded through a die 3 located at the front end of the extruder 1. And the molten resin extruded through the hollow Ku 3, to have a desired shape, passes through the calibrator and cooling unit 5.

The calibrator 4 allows the profile P, passing through the head 3, to maintain its appearance and have accurate dimensions and shapes. Thus, it is preferable that the calibrator 4 is located near the head 3 so that the profile passing through the head 3 could enter the calibrator 4 without deforming its shape. The product passing through the calibrator 4 is cooled using a cooling device 5, is pulled with a certain force through the traction device 6 and then cut to the desired size using a cutting device. Thus, the window profile product is preliminarily completed.

And in order to provide various textures and patterns on the upper or side surface of the window profile facing outward during installation, a decorative film (sheet) made of synthetic resin is attached to it so as to provide a wood texture, thereby improving the appearance of the window profile.

However, to attach a single film or sheet to an extruded window profile, it is necessary that the extruded window profile is transported to a separate plate on which the wrapping unit is equipped, loaded into it, and then processed using a separate process. Thus, this presents a disadvantage in terms of efficiency and manufacturing cost, and also when scratches form on it after transportation, processing and installation, these scratches are difficult to restore. Moreover, since glue is used during the wrapping process, this adversely affects the health of the user or employee.

To overcome these problems, a double extrusion method (auxiliary extrusion / coextrusion) has been proposed in which the window profile is double extruded. In double extrusion, as described above, the profile is extruded using an extruder so as to have the desired shape, and then another raw material, such as PVC, is further extruded onto one side of the profile using an additional auxiliary extrusion unit.

However, even in this case, there are some disadvantages and problems in that the appearance of the profile on which PVC or a similar material is applied is unnatural, and the appearance is impaired due to a change in the color of the surface of the profile created by the PVC pigment.

To enhance the graphic surface profile, an embossing roller (not shown) is located between the head 3 and the calibrator 4 to form the surface of the embossing roller on the profile surface. However, as described above, since the calibrator 4 should be located near the head, there is a limitation in the diameter and circumference of the embossing roller located between them. As a result, the repetition period of patterns that are re-formed on the surface of the profile becomes short, and thus the graphics deteriorate.

The objective of the present invention is to improve the installation for the manufacture of a window profile having the texture of natural wood, and therefore an excellent appearance, which has an enlarged embossing roller of a large size in order to ensure graphic embossed patterns, and also prevents damage to the embossed patterns made on the surface of the profile .

To achieve the objective in accordance with the present invention, there is provided a plant for manufacturing a window profile comprising a main extruder 10 that melts the resin material, and then compresses and transports the molten resin material to the head 30, a head 30 releasing the resin material in the form of a profile having a certain shape , a calibrator 70 supporting the appearance of the profile discharged from the head, and a cooling device 90 cooling the profile passed through the calibrator, characterized in that the yarn roller 50 An embossing pattern for forming embossed patterns on the profile surface is located between the head 30 and the calibrator 70, and the embossing roller is equipped with a first protrusion 53 formed thereon and a second protrusion 55 formed on the first protrusion.

Preferably, the first and second protrusions are informal, and the head 30 is equipped with a recessed portion 35 for receiving an embossing roller.

Preferably, a plurality of discs 93, which are respectively equipped with a hollow portion for maintaining the profile, is located in the cooling device 90, and a roller 95 in linear contact with the profile is located in the upper portion of the hollow portion of the disc.

Preferably, the installation further includes an additional auxiliary extrusion installation that extrudes the auxiliary extrusion resin composition containing wood fibers into the head 30 so as to form a surface layer having a natural wood texture on one side of the profile, wherein the resin composition for auxiliary extrusion contains wood fibers.

In accordance with the present invention, as described above, the embossed patterns are increased in graphics by increasing the size of the embossing roller, and also since damage to the embossed patterns made on the profile surface is prevented, the surface layer made integrally with the profile surface by auxiliary extrusion may preserve the texture of natural wood, and thus, the product can provide an excellent appearance.

The above and other objects, features and advantages of the present invention will become apparent from the following description of preferred embodiments given with reference to the accompanying drawings, in which:

Figure 1 depicts a schematic view of an installation for the manufacture of a traditional window profile.

Figure 2 depicts a schematic view of an installation for manufacturing a window profile in accordance with one embodiment of the present invention.

3 is a perspective view showing an extrusion process using an extruder and an auxiliary extruder in accordance with the present invention.

Figure 4 depicts a view in cross section of a profile made using the installation in accordance with the present invention.

5 is a perspective view of an embossing roller in accordance with the present invention.

6 depicts a cross-sectional view of an embossing roller and an enlarged surface view of an embossing roller in accordance with the present invention.

7 depicts a cross-sectional view of a conventional embossing roller and an enlarged surface view of a traditional embossing roller.

FIG. 8 is a view of an auxiliary extrusion apparatus for manufacturing a window profile in accordance with the present invention, shown in a different direction compared to FIG.

Fig.9 depicts a cross-sectional view of the head and embossing roller of Fig.8.

Figure 10 depicts a perspective view of the disk of the cooling device in the installation for auxiliary extrusion in accordance with the present invention.

11 is a cross-sectional view of a connector of an auxiliary extrusion apparatus in an auxiliary extrusion apparatus in accordance with the present invention.

12 is a cross-sectional view of a conventional connector.

FIG. 13 is a view showing patterns formed on a profile by an auxiliary extrusion apparatus.

Fig. 14 is a view showing patterns formed on the profile by the auxiliary extrusion apparatus in accordance with the present invention.

FIG. 15 is a view of a real product made by an auxiliary extrusion apparatus in accordance with the present invention.

Embodiments of the present invention will be described in detail below.

Figure 2 depicts a schematic view of an installation for manufacturing a window profile in accordance with one embodiment of the present invention. With reference to FIG. 2, if a briquette or composite material of a thermoplastic resin, for example polystyrene (PS), polyethylene (PE), polypropylene (PS), polyvinyl chloride (PVC) and ABS plastic, is introduced into the main extruder 10 through the hopper 20 , the material is heated using a heater located in the main extruder 10, so as to melt to a gel-like state, and transported by rotating the worm screw. After that, the profile P having the desired shape is extruded through a die 30 located on the front side of the main extruder 10 and passes through a calibrator 70, 80 and a cooling device 90, and then a traction device 99 and a cutting device that are similar to the prior art, and therefore their detailed description will be omitted.

Preferably, the calibrator 70 is located near the head so that the profile passing through the head can enter the calibrator 70 without deforming its shape, and the surface of the profile P is cooled before the profile P enters the calibrator 70. If the profile P is immediately inserted into calibrator without cooling its surface, a problem may arise that embossed patterns formed on the surface of the profile will erase and disappear due to friction of the surface between the molded resin of the profile and the inner metal m of calibrator. Therefore, it is preferable to use air as a cooling medium. That is, in the surface cooling device, air is uniformly supplied to the profile so that the surface of the profile is rapidly cooled.

An auxiliary extrusion apparatus in accordance with the present invention includes an additional auxiliary extrusion apparatus 100. Figure 3 depicts the head 30 and the auxiliary installation 100 for auxiliary extrusion in accordance with the present invention. The head 30 includes a main extruding head 30a and an auxiliary extruding head 30b. The main extruding head 30a is designed to extrude the resin introduced through the hopper 20 and molten to a gel state, so as to give it a certain shape. The auxiliary extruding head 30b is located on the front side of the main extruding head 30a and is intended to form a surface layer (with reference to position S of FIG. 4) on one side of the profile passing through the main extruding head 30a. To this end, the auxiliary extrusion resin is supplied from the auxiliary auxiliary extrusion unit 100 and injected into the upper portion of the auxiliary extrusion head 30b. In other words, the auxiliary extrusion resin supplied from the auxiliary auxiliary extrusion apparatus 100 is connected to the side of the profile passing through the main extruding head 30a so as to form a surface layer S, and then passing through the auxiliary extruding head 30b.

Figure 4 depicts a cross-sectional view of a profile made by auxiliary extrusion in accordance with the present invention. The surface layer S is made integrally with the surface of the window profile P by means of auxiliary extrusion. The drawing shows that the surface layer is made on the upper surface and both sides of the profile. However, the present invention is not limited to the formation of a surface layer. If necessary, a surface layer may be formed on part of the upper surface or on all surfaces of the profile.

By forming the surface layer by auxiliary extrusion, it is possible to provide different colors using different materials for the surface layer. Since a material different from the profile material is formed integrally with the profile during auxiliary extrusion, subsequent processing, such as sheet fastening, is not required after the profile is manufactured. You can also reduce production costs and increase product life. Moreover, since no glue is used, the product is safe for the environment, and also has the advantage of scratching.

According to the present invention, the auxiliary extrusion resin composition forming the surface layer S contains wood fibers, thereby improving the texture of natural wood and therefore its graphicality.

The auxiliary extrusion resin composition includes a first raw material for forming a base color, a second raw material for forming a halftone color, and a third raw material for forming a high tone color.

In the present invention, the first raw material as the main material is characterized in that it contains wood fibers so that the surface layer of the profile has the texture of natural wood. The first raw material consists of 70% PVC, 10 to 15% lump coal, 15 to 20% wood fibers, a small amount of inorganic pigment with excellent resistance to weathering, a small amount of additive for resistance to weathering, etc. .

The second raw material for halftone color formation consists of a resin, such as highly polymerized PVC, NAC (acrylonitrile), PMMA (polymethyl acrylate) and PE (polyethylene), which has a higher melting point than the first raw material (base material), a small amount of inorganic pigment halftone with excellent weather resistance, a small amount of an additive such as a lubricant, etc.

The third raw material for forming a high-tone color consists of a resin such as highly polymerized PVC, NAC (acrylonitrile), PMMA (polymethyl acrylate) and PE (polyethylene) having a higher melting point than the first raw material (base material), a small amount of inorganic high-tone pigment with excellent weathering resistance, a small amount of an additive such as a lubricant, etc.

In accordance with the present invention, the first, second and third raw materials are not mixed to form a single color. But in the state where the surface layer is formed on the profile, the second and third raw materials respectively show a halftone color and a high tone color on the first raw material as the base material, so that each color can be distinguished from the other, thereby providing natural colors with excellent graphics.

In order that the colors of the resin compositions can be distinguished from each other, the first raw material has a melting point of 160 to 165 ° C, the second raw material has a melting point of 175 to 185 ° C and the third raw material has a melting point of 175 to 185 ° FROM.

The auxiliary extrusion apparatus 100 is designed to heat the resin compositions for auxiliary extrusion, and then compress them and direct them to the auxiliary extrusion head 30b. If the melting points of the resin compositions are all the same, all resin compositions will melt and mix with each other in the auxiliary extrusion apparatus 100, and thus, each of the colors will be indistinguishable from the other, and they will all change to the same color. Therefore, to prevent this phenomenon, each melting point is different from the other. In other words, when the inner portion of the auxiliary auxiliary extrusion apparatus 100 is heated to about 160-180 ° C., the base material having the lowest melting point is first melted to a gel state, the second and third raw materials are partially melted, and then discharged into the auxiliary extruding head . In this process, a second raw material having a halftone color and a third raw material having a high tone color form natural patterns on the base material.

Moreover, the auxiliary extrusion resin compositions may further comprise an anionic powder, an air freshener or the like in order to radiate anions into the room, thereby providing an environment like a forest or emitting natural aromas, like the smell of a phytoncide.

5 is a perspective view of an embossing roller 50 in accordance with the present invention, and FIGS. 6a and 6b are a cross-sectional view and an enlarged view of an embossing roller 50 in accordance with the present invention.

The embossing roller 50 according to the present invention has a larger diameter than the traditional embossing roller, and the patterns are formed in two steps so as to ensure perfect uniformity of the patterns, thereby enhancing the graphic appearance and sense of size. A rotatable embossing roller 50 is mounted on the rotary shaft 51, and uneven patterns are formed on its surface. That is, as shown in FIG. 6a, two-stage uneven patterns are formed on the surface of the embossing roller 50. In other words, the embossing roller 50 includes a first protrusion 53 made relatively larger, and a second protrusion 55 made relatively smaller relative to the first protrusion 53. The first and second protrusions 53 and 55 are not uniform and common, but random (traditional the embossing roller shown in FIGS. 7a and 7b has simple patterns simply located at a uniform depth, and thus their graphics are degraded). The depth D of the first protrusion 53 is greater than the depth d of the protrusion formed on the traditional embossing roller, thereby increasing the graphic design.

The embossing roller 50 of the present invention has a large diameter RD as well as a large protrusion. If the diameter of the embossing roller increases, the circumference of the surface of the embossing roller also increases, and also the length of the embossed pattern formed along the profile surface becomes longer. Thus, the repetition period of patterns formed on the profile becomes short, thus increasing the graphics of the patterns.

However, the diameter of the embossing roller 50 located between the head 30 and the calibrator 70 is limited due to the limited space between the head 30 and the calibrator 70, as described above. To solve this problem, the present invention provides a new form, as shown in Fig.8 and 9.

Fig. 8 depicts a part of an auxiliary extrusion apparatus for manufacturing a window profile in accordance with the present invention, shown from a different direction than in Fig. 2 when the auxiliary extrusion apparatus is omitted, and Fig. 9 is a cross-sectional view of a head 30 and embossing roller 50 of FIG. 8.

With reference to FIGS. 8 and 9, in the space G between the head 30 and the calibrator 70, the lower space G1 is relatively small, but the upper space G2 is relatively large in order to mount the embossing roller 50. And the surface of the head 30 on which the embossing roller 50 is located is rounded so as to have a recessed portion 35, and thus, sufficient space can be provided in which an embossing roller 50 with a larger diameter can be mounted. That is, a curved portion 35 corresponding to the outer perimeter of the embossing roller 50 is formed on the surface of the head 30 from which the profile P emerges. Thus, even though the diameter RD of the embossing roller 50 becomes larger than that of a conventional embossing roller , it is possible to install embossing roller 50 without excessively increasing the space between the head and the calibrator. Although a semicircular recessed portion is shown in the drawing, the present invention is not limited to this shape, and if necessary, it is possible to provide different shapes of the recessed portion, for example, the shape of a circular arch having a central angle of 90 °.

With reference to Fig. 8, the calibrator 70, 80 may include a dry calibrator 70 and a water calibrator 80, or one of them. In the cooling device 90, a plurality of hollow discs 93 are arranged in the direction of movement of the profile in the water tank, so that the profile passing through them can be cooled without deforming the shape of the profile.

Figure 10 depicts one of the disks of the cooling device 90 in accordance with the present invention. The disk 93 has a shape hollow in the central portion so that profile P can pass through it, and the roller 95 is located on the upper portion of the hollow portion of the disk 93. The rotational shaft of the roller 95 is attached to the upper portion of the disk 93, and the roller 95 rotates while in contact with the profile passing through it. A surface layer S is formed on the upper surface of the profile P by auxiliary extrusion, and embossed patterns are formed on it using the embossing roller 50.

In a conventional cooling device, since it is not equipped with a roller 95 in accordance with the present invention, the upper surface of the hollow portion of the disk is in contact with the profile passing through it, and as a result, the embossed patterns formed on the upper surface of the profile may be damaged.

In accordance with the present invention, since the rotary roller is equipped in the proper position on the disk and is in contact with the upper surface of the profile, the traditional surface contact with the profile is changed into linear contact with it, and thus, damage to the embossed patterns formed on the upper surface of the profile is prevented.

In the present invention, as shown in FIG. 3, the surface layer is further extruded onto the upper surface of the profile using an additional auxiliary extrusion apparatus 100. An additional auxiliary extrusion installation 100 having an improved passage can be achieved by improving the traditional auxiliary extrusion installation, which is used for the auxiliary extrusion of PVC or other materials in a traditional production installation.

In the auxiliary auxiliary extrusion unit 100 according to the present invention, the auxiliary extrusion resin composition is compressed to a certain and constant pressure and supplied to the upper portion of the auxiliary extrusion head 30b so that the surface layer S is formed on the surface of the profile P. As shown in the drawing, the resin the composition for auxiliary extrusion is transported horizontally, rotated approximately 90 degrees and then transported again tikalno to be introduced into the upper portion of the auxiliary extruding head 30b. Connector 110 is designed to change the direction of movement of the resin composition for auxiliary extrusion in the vertical direction. 11 is a cross-sectional view of a connector 110 in accordance with the present invention. The connector 110 is equipped with an inlet 111 through which the resin composition for auxiliary extrusion is introduced, an outlet 112 that is vertically rotated from the inlet 111, and a curved portion 113, 114 that changes direction of movement. The inner diameter of the connector 110 becomes narrower from the inlet 111 to the outlet 112, so that the movement speed and pressure of the resin composition increases. Curved section 113, 114 allows you to smoothly change the direction of movement from a horizontal direction to a vertical direction.

12 is a cross-sectional view of a conventional connector. Here, the direction of movement of the material transport changes dramatically from a horizontal direction to a vertical direction. Thus, the material transported in the horizontal direction collides with the vertical wall and, thus, comes back or accumulates in this area, which causes the problem of increasing the pressure of transportation. However, since the present invention provides a curved portion, the direction of movement of the material can vary smoothly.

Fig. 13 is a comparative example showing that patterns are formed on the profile by the auxiliary extrusion apparatus, and Fig. 14 is shown that patterns are formed on the profile by the auxiliary extrusion apparatus in accordance with the present invention.

The auxiliary extrusion resin composition is introduced from the auxiliary auxiliary extrusion unit 100 to the upper portion of the die 30, and then introduced into the auxiliary extrusion compression space 38 formed in the die. Then, the resin composition for auxiliary extrusion is applied to the upper surface or the upper and side surfaces of the profile P, which passes through the head and is transported horizontally, thereby forming a surface layer S on the profile. Here, the second and third raw materials of resin compositions form natural patterns.

However, as shown in FIG. 13, if the compression space 38 during auxiliary extrusion is formed as a single space, the pressure is concentrically applied to the central portion of the resin composition deposited on the profile P, and thus, the swirl patterns S1 are concentrically formed on the central section of the upper surface of the profile, thus creating an artificial sensation.

In the present invention, to solve the problem, the compression space 38 during auxiliary extrusion is divided into many compartments. To this end, the present invention provides a flow guide 39 that is formed in a compression space 38 during auxiliary extrusion to direct the resin composition to various spaces. In this case, the resin composition, which is compressed in the auxiliary auxiliary extrusion apparatus 100 and introduced into the compression space 38 during auxiliary extrusion in the die, is guided to different spaces, and thus it is prevented that the resin composition is concentrically applied to the central portion upper surface of the profile. Therefore, the pattern S2 formed on the surface layer S of the profile thus uniformly forms natural patterns in the form of stripes.

As shown in FIG. 14, since the pattern S2 formed on the surface layer S of the profile P made by the auxiliary extrusion apparatus according to the present invention is formed by appropriately distributing the second and third raw materials using the flow guide 39, it has natural and informal drawings, and thus high graphic quality.

In accordance with the present invention, the graphics of the embossed patterns are improved by increasing the size of the embossing roller, as well as by preventing damage to the embossed patterns made on the profile surface, a surface layer integrally formed with the profile surface by auxiliary extrusion can preserve the texture of natural wood, and Thus, you can give the product an excellent appearance.

Although the present invention has been described with reference to individual embodiments, one skilled in the art will appreciate that various changes and modifications can be made without violating the scope and spirit of the invention defined in the following claims.

Claims (5)

1. Installation for the manufacture of a window profile, containing the main extruder 10, melting the resin material and then compressing and transporting the molten resin material to the head 30, the head 30, releasing the resin material in the form of a profile having a given shape, a calibrator 70 that supports the appearance of the profile, released from the head, and a cooling device 90 for cooling the profile passed through the calibrator, characterized in that the embossing roller 50 for forming embossed patterns on the surface of the profile is located between the head 30 and the calibrator 70, while the embossing roller is equipped with a first protrusion 53 made on it, and a second protrusion 55 made on the first protrusion, the first and second protrusions having an arbitrary shape. 2. Installation according to claim 1, in which the head 30 is made with a recessed section 35 for receiving the embossing roller. 3. Installation according to claim 1, in which a plurality of discs 93, respectively equipped with a hollow section for maintaining the profile, is located in the cooling device 90, and the roller 95, which is in linear contact with the profile, is located on the upper section of the hollow section of the disk. 4. The apparatus of claim 1, further comprising an additional auxiliary extrusion device, extruding an auxiliary extrusion resin composition containing wood fibers into the head 30 in order to form a surface layer having a natural wood texture on one side of the profile. 5. Installation according to claim 4, in which the resin composition for auxiliary extrusion contains wood fibers.

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