RU232482U1 - Equipment - Google Patents

Abstract

The utility model relates to the field of manufacturing profile products and can be used primarily for the continuous fixation of a fiberglass tape in the body of a profile strip made of extruded PVC. The technical result consists in improving the quality of the products. The fiberglass tape 3 is held between one or two parts of the profile strip 2, preliminarily formed during extrusion and pressed together in a plastic state. 1 c.p. phylum, 5 fig.

Description

Field of technology

The utility model relates to the field of manufacturing profile products and can be used primarily for the continuous fixation of fiberglass tape in the body of a profile strip made of extruded PVC.

State of the art

The prior art includes methods for manufacturing products from polymeric materials by gluing their parts together (for example, according to certificate SU 622831 A1, 05.09.1978).

The disadvantage of such solutions is the need for preliminary mechanical or other treatment of parts to improve the adhesive properties of the surface in order to ensure sufficient strength of the connection.

There is also a known product (https://petrovich.ru/product/655507/), in which one of its parts (the mesh) is attached to the profile by using plasticized PVC compositions that penetrate through the mesh cells and bond it to the profile.

The disadvantage of this solution is the possibility of profile deformation due to the application of a hot PVC strip to a cold PVC core after its perforation. In this case, the internal stresses of the PVC core are preserved and arise again, which can lead to profile deformation and deterioration of the product quality.

In addition, the general disadvantage of the solutions noted is the need for two stages: the stage of manufacturing the first part (in particular, the profile), followed by the stage of fixing the second part (in particular, the mesh) to it in one way or another.

This leads to increased complexity of production due to the use of different technological processes, as well as to an increase in the time required to produce the final product.

The proposed utility model is aimed at overcoming the noted shortcomings of the state of the art and, when implemented, allows for the achievement of a technical result consisting in improving the quality of products.

Disclosure of a utility model

In order to achieve the above technical result, a tooling is proposed for the continuous fixation of a glass fabric tape in the body of a profile strip made of extruded PVC, comprising an extruder with a module for feeding a PVC mixture, a die and a calibrator placed on a common base, wherein the extruder is connected to the die, having at least one first channel for feeding a PVC mass, passing in the longitudinal direction to the calibrator, and also having a channel for feeding a glass fabric tape, separated in the die from the first channel for feeding the PVC mass, wherein the lower edge of the channel for feeding the glass fabric tape is made higher than the lower edge of the first channel for feeding the PVC mass, and in the calibrator, said channels are combined into one common channel.

In an additional embodiment, a second channel for feeding PVC mass is made in the die so that in the die it goes below the level of the lower point of the channel for feeding the glass fabric tape, at the outlet from the die it is parallel to the first channel for feeding PVC mass and the glass fabric tape, and in the calibrator it is additionally combined into the specified single common channel.

Implementation of a utility model

For a more complete understanding of the essence of the utility model, the description provides references to the positions of the figures, according to which the following are presented:

Fig. 1 - general view of the equipment;

Fig. 2 - equipment, side view;

Fig. 3 - equipment, top view;

Fig. 4 - section of the die;

Fig. 5 - section of the calibrator.

The utility model allows for the continuous fixation of the glass fabric tape 3 in the body of the profile strip 2 obtained from extruded PVC using an extrusion tool - a die 4, which has at least one channel 8 for feeding PVC mass for forming a profile strip from PVC mass fed by the extruder 7 into the die 4, and a separate channel 11 for feeding the glass fabric tape.

It is essential that the PVC mass feed channel 8 and the fiberglass tape feed channel 11 are separated from each other until the moment of forming the profile strip 2 of the required configuration in the calibrator 10.

During the manufacturing process of the product, the die 4 directs the tape through the feed channel of the glass fabric tape 11 into the die separately from the feed channel of the PVC mass 8. Then, in the calibration device 10, the channels are connected and the lower edge of the tape is coated with the PVC mass by penetrating the still plastic PVC mass through the cells of the glass tape, followed by pressing the glass tape inside the profile strip 2 formed by the calibrator 10 into a strong and continuous connection.

In an additional embodiment, the PVC mass feed channel 8 passes through the die 4 in the longitudinal direction, dividing into two channels before the glass fabric tape 3 enters the die 4 through its feed channel 11. In this case, the second of the PVC mass feed channels 9 goes below the level of the lower point of the glass fabric tape feed channel 11, so as not to interfere with the glass fabric tape 3 taking its working position parallel to the first channel. After which the second PVC mass feed channel 9 returns to a parallel position relative to the first channel 8 and the glass fabric tape feed channel 11. Thus, the glass fabric tape feed channel 11 exits the die between two channels of plastic PVC mass, wherein the lower edge 13 of the glass fabric tape feed channel 11 is above the lower edge of each of the two parallel PVC mass channels.

In the calibrator, two streams of still plastic PVC mass channels 8 and 9 and the glass cloth tape feed channel 11 are connected to each other, forming one common channel in which the PVC mass on both sides passes through the cells of the glass cloth tape and is connected into a strong homogeneous structure, clamping the lower edge of the glass cloth tape inside itself.

The advantage of the proposed utility model is that the glass fabric tape 3 is held between one or two parts of the profile strip 2, pre-formed during extrusion and pressed together in a plastic state. As a result, deformation of the profile 2 is eliminated and the quality of the product is increased.

In addition, the quality of the product is improved by the fact that when the two parts are compressed after their extrusion, the supplied glass fabric tape 3 is cut off by the high pressure in the die 4. Thus, the PVC mass cannot penetrate into the channel 11, which feeds the glass fabric tape, as a result of which the gap cannot become clogged or burn, damaging the glass fabric tape 3.

Claims (2)

1. Equipment for the continuous fixation of a glass fabric tape in the body of a profile strip made of extruded PVC, comprising an extruder with a module for feeding a PVC mixture, a die and a calibrator placed on a common base, wherein the extruder is connected to the die having a first channel for feeding the PVC mass, extending in the longitudinal direction to the calibrator, and also having a channel for feeding the glass fabric tape, separated in the die from the first channel for feeding the PVC mass, wherein the lower edge of the channel for feeding the glass fabric tape is made higher than the lower edge of the first channel for feeding the PVC mass, and in the calibrator, said channels are combined into one common channel. 2. The equipment according to item 1, characterized in that a second channel for feeding PVC mass is additionally made in the die so that in the die it goes below the level of the lower point of the channel for feeding the fiberglass tape, at the exit from the die it is parallel to the first channel for feeding PVC mass and the fiberglass tape, and in the calibrator it is additionally combined into the specified single common channel.