WO2024035277A2

WO2024035277A2 - Production line and method for producing continuous bent polymer composite bars

Info

Publication number: WO2024035277A2
Application number: PCT/RU2023/000298
Authority: WO
Inventors: Илья Владимирович ЛЕЩЁВ
Original assignee: Илья Владимирович ЛЕЩЁВ
Priority date: 2022-08-11
Filing date: 2023-10-06
Publication date: 2024-02-15
Also published as: WO2024035277A3

Abstract

The claimed group of inventions relates to a device and method for producing bent polymer composite bars for triple-layered enclosure structures. The technical result, which consists in an improvement to a production line and method, is achieved in that a production line contains a roving creel rack, a device for tensioning and drying roving filaments, a heated impregnation bath, a pressing device, a winding assembly, a tow preheating oven, a forming device comprising a tow laying assembly, a conveyor with a single moving chain and, mounted on said conveyor, arms provided with heated jaws, a bar curing oven, devices for cooling and removing bars, and a control panel. A method for producing a composite bar consists in unwinding roving from the creel rack, tensioning and drying the roving, impregnating same with a compound in the heated bath, pressing and winding a tow, preheating the tow in the oven, forming the tow, curing same, cooling, and coiling the finished bar on a coiling device, or cutting the finished bar, the entire process being controlled using a control panel.

Description

TECHNOLOGICAL LINE AND METHOD FOR MANUFACTURING CONTINUOUS CURVED POLYMER COMPOSITE RODS

TECHNICAL FIELD

The claimed group of inventions relates to a method for manufacturing curved polymer composite rods used as connecting elements in three-layer enclosing structures, as well as to a device for their manufacture.

BACKGROUND ART

The closest technical solution (prototype) is the production line and method for manufacturing continuous curved polymer composite rods according to RF patent No. 2665536, B29C 53/82, publ. 08/30/2015 Bulletin. No. 25, which describes a production line for the production of continuous curved polymer composite rods, containing a creel with rovings, an impregnation bath, a squeezing device, a winding unit, a bundle laying unit, which is equipped with a unit for reciprocating movement of the bundle in a plane perpendicular to its movement and is connected with a device for forming a curved rod, which is a conveyor with grippers installed on it, on which a curing oven is mounted, while The forming device contains a device for removing a continuous curved polymer composite rod, as well as a method for producing continuous curved polymer composite rods, characterized in that the roving is unwinded from a creel, impregnated with a compound in an impregnation bath, the excess compound is squeezed out in a squeezing device, the resulting bundle is directed to a winding unit, and then onto the laying device, it is fed to the grippers of the conveyor of the molding unit, forming a curved configuration of the bundle, it is moved through the conveyor into the curing oven, the cured curved polymer composite rod is wound through the removal device onto a winding device, or it is cut into measured pieces.

Prototype disadvantages:

1) the absence of a device for tensioning and drying the roving threads does not allow pre-tensioning and drying the roving before impregnating it with the compound;

2) a cold bath (made without heating) does not provide high-quality impregnation of the roving threads with the compound;

3) the absence of a furnace for preheating the tow does not allow the process of polymerization of the tow to be carried out, so the compound constantly leaks out of the tow on the production line, which leads to clogging of the device mechanisms with the leaking compound and an increase in the degree of fire hazard on the production line;

4) the use of guide rollers for the bundle laying carriage does not contribute to the stability of the shape of the resulting bundle;

5) stability of polymerization of the rod is not ensured along its entire length (including in places of inflection), since the grips are made without heating;

6) the absence of a cooling device for the cured composite rod lengthens the process of its polymerization and reduces the productivity of the prototype;

7) making the conveyor in the form of two parallel chains does not allow manufacture of various geometric sizes of curved polymer composite rods;

8) Adhesion of the molded curved polymer composite rod to the grippers makes it difficult to remove.

The technical problem solved by the creation of the declared group of inventions is that the most important task continues to be providing citizens with high-quality and affordable housing. It is known that panel houses are built quickly, since an almost finished house is brought to the construction site, but only in disassembled form, therefore the responsible task of assembling the structure rests with the builders, who must have reliable connecting elements that ensure the enclosing structures of the external wall panels of residential buildings premises of apartment buildings from collapse, including during disasters. Safety and reliable living conditions for people in a panel house, as well as the safety of property and engineering equipment of the premises, is achieved through the use of curved polymer composite rods as connecting elements of external three-layer enclosing structures, which have increased strength and, accordingly, provide increased reliability of the object during operation.

The technical result of the claimed group of inventions is the improvement of the design of the production line and the method of manufacturing continuous curved polymer composite rods to increase strength (achieving shape stability due to high-quality baking of the curved rod), quality and reliability (durability) during further operation of the connecting products for three-layer fencing manufactured on the production line structures while simultaneously increasing the productivity of the production line, ensuring its versatility, reducing fire hazards in production.

The technical result is achieved by the fact that the production line for the production of continuous curved polymer composite rods, containing a creel with rovings, an impregnation bath, a squeezing device, a winding unit, a strand laying unit, is equipped with a unit for reciprocating movement of the strand in a plane perpendicular to its movement and is connected to the device forming a curved rod, which is a conveyor with grippers mounted on it, on which a curing oven is mounted, wherein the molding device contains a device for removing a continuous curved polymer composite rod, and a tensioning and drying device is located between the creel with rovings and the heated impregnation bath roving threads, between the winding unit and the tow laying unit there is a furnace for preheating the tow, the carriage of the tow laying unit is made with at least one guide hole, the forming device additionally contains a heating device for the grippers and a cooling device for the cured composite rod, the conveyor is made in the form of one moving There is a control panel in the central chain chute, on which the brackets with grips mounted on them are installed. In this case, the device for forming a curved rod contains a unit for cleaning the grips from resin residues. In this case, the device for forming a curved rod contains a lubrication unit for the grippers.

The technical result is also achieved by the fact that the method of manufacturing continuous curved polymer composite rods, characterized by the fact that the roving is unwinded from a creel, impregnated with a compound in an impregnation bath, the excess compound is squeezed out in a squeezing device, the resulting bundle is directed to the winding unit and then to the laying device, feed it to the conveyor grips of the device molding, forming a curved configuration of the rope, it is moved by means of a conveyor into the curing oven, the cured curved polymer composite rod is wound onto a winding device through a removal device, or cut into measured pieces, and the roving threads wound from the creel bobbins are stretched and dried in a tensioning and drying device , then sent to a heated bath, where they are impregnated with a heated compound, the tow coming out of the winding unit is sent to the preheating furnace, the tow coming out of the preheating furnace is sent to at least one guide hole of the carriage of the tow laying unit, before laying the tow on the grippers They are preheated using a grip heating device, the curved polymer composite rod coming out of the curing oven is cooled in the cooling device, and the process of manufacturing continuous curved polymer composite rods is controlled from the control panel. In this case, the grippers are cleaned using a grip cleaning device. In this case, the grippers are lubricated by means of a grip lubrication device.

New significant distinctive features of the proposed technical solution (line) are the following features:

— between the creel with rovings and the heated impregnation bath, there is a device for tensioning and drying the roving threads;

— the impregnation bath with epoxy compound is heated;

— between the winding unit and the bundle laying unit there is a preheating furnace for the bundle;

— the carriage of the harness laying unit is made with at least one guide hole;

— the forming device additionally contains a device for heating the grips and a device for cooling the cured composite rod;

— the conveyor is made in the form of one central one moving in the chute chains;

— the conveyor has brackets with grips with grooves installed on them.

New significant distinctive features of the proposed method are the following features:

— the roving threads wound from the creel bobbins are stretched and dried in a tensioning and drying device;

— then the stretched and dried roving threads are sent to a heated bath, where they are impregnated with a heated compound;

— the bundle coming out of the winding unit is sent to the preheating furnace;

— the tow coming out of the preheating furnace is directed into at least one guide hole of the carriage of the tow laying unit;

— before laying the bundle on the grips, they are preheated using a grip heating device;

— the curved polymer composite rod coming out of the curing oven is cooled in a cooling device;

— the process of manufacturing continuous curved polymer composite rods is controlled from the control panel.

The set of new essential distinctive features, along with the features known from the prior art, is sufficient to solve the specified technical problem and obtain the technical result provided by the inventions - improving the design of the production line and the method of manufacturing continuous curved polymer composite rods on it to obtain products with increased strength properties.

BRIEF DESCRIPTION OF THE DRAWINGS

The essence of the proposed technical solutions, their feasibility and the possibility of industrial application is illustrated by drawings (Fig. 1, 2, 3), where: Fig. 1 is a schematic representation of the production line (top view); in Fig. 2 - front view of the production line; in Fig. 3 - view of a gripper mounted on a conveyor for laying a composite rod.

The drawings (Fig. 1, 2, 3) contain the following symbols:

1- creel;

2 - rovings;

3 - device for tensioning and drying roving threads

(fiberglass);

4 - heated impregnation bath;

5 - squeezing device;

6 - winding unit;

7 - furnace for preheating the tow;

8 - tourniquet;

9 - laying device;

10 - forming device;

11 - cutting device; - winding device; - carriage; - guide holes; - guide; - drive unit; - conveyor; - brackets; - grips; - gripper grooves; - heating device for grippers; - oven for curing (polymerization) of the composite rod; - cooling device; - unit for cleaning the grips from resin; - grip lubrication unit; - conveyor chain; - Remote Control; - removal device; - cured curved rod. OPTION FOR IMPLEMENTATION OF THE INVENTION

A polymer composite rod is a thermoset reinforced with mineral fibers, for example, glass, basalt.

The production line for the production of curved polymer composite rods, shown in Fig. 1, 2, 3, contains a creel 1 (Fig. 1) having bobbins with rovings 2, a device 3 for tensioning and drying roving threads (fiberglass), a heated impregnation unit (standard electric or water heating, for example from 20°C to 50°C) compound bath 4, squeezing device 5, winding unit 6, oven (for example, standard electric oven) 7 preheating tow 8, laying device 9, device 10 (Fig. 1, 2) molding, cutting device 11 (Fig. 1) or winding device 12.

The device 9 for laying the harness 8 consists of a carriage 13 with two guide holes 14 (Fig. 2), a guide 15 (Fig. 1, 2) for moving the carriage 13 (Fig. 1) and a drive 16 for the linear movement of the carriage 13.

The device 9 for laying the tow is connected to the device 10 (Fig. 1, 2) for forming the cured curved rod 29 (Fig. 2) and is located with it in the same plane.

The molding device 10 (Fig. 1,2) with the function of curing and drawing contains a conveyor 17 (Fig.2) with brackets 18 (Fig.1,3) fixed on it with grips 19 (guides) having grooves 20 (Fig.3 ) for fixing the formation of the uncured bundle 8 (Fig. 1), as well as a device 21 (Fig. 1, 2) for heating the grips in the form of two heating elements located on both sides of the conveyor, an oven 22 for curing (polymerization) of the composite rod, a cooling device 23 (for example, a fan unit) of a cured composite rod, a unit 24 for cleaning the grips (for example, brushes) from resin residues, a lubrication unit 25 (for example, an oily rag) of the grips.

The conveyor 17 (Fig.2) serves to move the tow 8 (Fig.1) along the molding device 10 (Fig.1,2): moving the tow 8 (Fig.1) into the curing (polymerization) oven 22 (Fig.1,2) ), and then into the cooling device 23. The oven 22 for curing (polymerization) of the composite rod can be infrared, microwave, radiation, convection, etc.

Conveyor 17 (Fig. 2) is an endless conveyor having one moving central chain 26 (Fig. 1, 2) located in a chute (not shown in Fig.). The relative position of the grips 19 (Fig. 1, 3) of the conveyor 17 (Fig. 2) specifies the bending configuration of the polymer composite rod, which at the bending point must have a certain radius of curvature to maintain the strength properties of the rod, which is served by the grips 19 (Fig. 1, 3 ), made with grooves 20 (Figure 3).

The amplitude of movement of the carriage 13 (Fig. 1) with guide holes 14 (Fig. 2) of the bundle laying unit 9 (Fig. 1) slightly exceeds the distance between the grips 19 (Fig. 1, 3) in a plane perpendicular to the direction of movement of the conveyor 17 (Fig. .2).

Due to the circular movement of the conveyor 17 with grippers 19 installed on it (Fig. 1, 3) along the upper and lower surfaces of the forming device 10 (Fig. 1, 2), the grippers 19 (Fig. 1) move from the starting point (not shown in Fig. shown) to the end point (not shown in the figure) of the conveyor 17 (Figure 2) and their subsequent return to the starting point of the conveyor 17. When moving the grips 19 (Figure 1) along the bottom surface of the conveyor 17 (Figure 2), they cleaning using unit 24 (Fig. 1,2) cleaning the grips from resin residues, lubrication using the unit 25 (Fig.2) lubrication of the grippers and heating using the device 21 for heating the grippers 19. The production line includes a control panel 27 (Fig.1).

INDUSTRIAL APPLICABILITY

The production line works as follows. The rovings 2 are unwound from the reels (not shown in the figure) of the creel 1, the fiberglass is tensioned and dried in device 3, and then the fiberglass is impregnated in a heated impregnation bath 4, for example, with an epoxy compound, the excess compound is squeezed out of the rovings 2 in the squeezing device 5 and the rovings 2 impregnated with the compound are directed to the winding unit 6. The resulting uncured tow 8, which has a cylindrical cross-section at the exit from the winding unit 6, is fed into the furnace 7 for preheating the tow 8. Then the tow 8 is sent to the laying device 9.

The carriage 13 of the laying device 9 with the tucked uncured bundle 8, making reciprocating movements along the guides 15 (Fig. 1, 2) perpendicular to the movement of the conveyor 17 (Fig. 2), lays the uncured bundle 8 (Fig. 1) onto the grippers 19 ( Fig.1,3) conveyor 17 (Fig.2).

Laying of the uncured bundle 8 (Fig.1) on the grips 19 (Fig.1,3) of the conveyor 17 (Fig.2) is carried out as follows: carriage 13 (Fig.1) with guide holes 14 (Fig.2) of device 9 (Fig. .1) when laying the harness 8 is in the extreme right position. At this moment, the uncured tow 8 is captured by the gripper 19 (Fig. 1) (pre-heated in the device 21 (Fig. 1, 2) for heating the grippers) of the molding device 10 due to the movement of the conveyor 17 (Fig. 2). Device 21 (Fig. 1, 2) for heating grips 19 (Fig. 1, 3), located under the conveyor 17 (Fig. 2) - closer to the stacking device 9 (Fig. 1) alternately heats the grips 19 (Fig. 1, 3) located on the brackets 18 (Fig. 1) mounted on the conveyor 17 (Fig. 2). Heating of the grips 19 (Fig. 1,3) is carried out before laying the uncured tow 8 (Fig. 1), i.e., before it is captured by the grip 19 (Fig. 1, 3). Next, the carriage 13 (Fig. 1) with guide holes 14 (Fig. 2) moves to the opposite leftmost position. Subsequently, the process is repeated.

By means of the conveyor 17, the uncured molded tow 8 (Figure 1) is moved to the curing (and polymerization) oven 22 (Figures 1,2), where it is cured to obtain a cured curved polymer composite rod 29 (Figure 2). The conveyor 17 is moved into the oven 22 (Fig. 1, 2) for curing (and polymerization) of the composite rod 29 (Fig. 2) by means of a drive (electric motor with gearbox) through drive sprockets (not shown in Fig.).

The curved polymer rod coming out of the curing (and polymerization) oven 22 (Fig. 1, 2) is directed to the cooling device 23, from where it is fed to the removal device 28 (Fig. 1) of the continuous curved polymer composite rod 29 (Fig. 2) . The removal device 28 (Fig. 1) is made attached to the frame (not shown in Fig.) of the production line.

The finished cured rod 29 (Fig. 2), when the conveyor 17 moves, “runs” alternately onto two guides (not shown in Fig.) of the removal device 28 (Fig. 1), located, for example, at an acute angle to the horizontal plane of the conveyor frame 17 ( Figure 2), as a result of which the finished cured rod 29 is raised above the grips 19 (Figures 1,3), which ensures its removal alternately from each of the grips 19.

Next, the rod 29 (Figure 2) is fed to the cutting device I (Figure 1) or fed to winding device 12.

The operation of the production line for the production of curved polymer composite rods is controlled from the control panel 27.

Unlike the prototype, which does not have a device for tensioning and drying roving threads, in the proposed technical solution, due to the presence of a device for tensioning and drying roving threads, pre-tensioning of the roving threads and its pre-drying are provided before further impregnation with an epoxy compound, which allows you to create a better base for further production of rods, since pre-tensioning allows you to align the roving threads and create a more monolithic structure, and preliminary drying (getting rid of excess moisture) allows you to ensure better adhesion of the roving threads to the compound in a heated impregnation bath.

Unlike the prototype, where the roving threads in the impregnation bath are impregnated with a cold compound, since there is no device for heating the impregnation bath with the compound, in the proposed technical solution, due to the presence of a heated impregnation bath, the roving threads are impregnated with a warm epoxy compound, due to the increase in the fluidity of the heated compound they achieve better impregnation of roving threads.

Unlike the prototype, where there is no furnace for preheating the tow, which causes clogging of the component elements of the production line and increasing the fire hazard in the workplace, in the proposed technical solution, due to the presence of a preheating furnace in the tow, preliminary polymerization occurs, which prevents the compound from flowing out of the tow and clogging with the resulting compound of the production line mechanisms (including carriages, conveyor chains, grips), and this reduces the fire hazard in production.

Unlike the prototype, where there are no guide holes in the carriage of the harness laying unit, but there are guide rollers located opposite each other (the use of which does not contribute to the stability of the shape of the harness), in the proposed technical solution, guide holes are made in the carriage of the bundle laying unit, which allows saving the structure of the rod due to the absence of its damage, ensuring the stability of its shape, which during further operation ensures the durability of the connecting element of three-layer enclosing structures, and, consequently, the enclosing structures themselves.

Unlike the prototype, where there is no device for heating the grips and the rod cools down at the points of contact with the grips, reducing the quality of the product, in the proposed technical solution, the presence of a heating device for the grips allows maintaining the temperature of the preheated rod at the points of contact with the grips, which ensures stability of polymerization (strength ) of the rod along its entire length (surface), including in places of kinks, which, with its further use, will ensure durability (protection from destruction of the enclosing structures) of the object of operation.

Unlike the prototype, where there is no cooling device for the cured composite rod, in the proposed technical solution, the presence of a cooling device for the cured composite rod makes it possible to speed up the polymerization process, therefore increasing the productivity of the production line (reducing time for production).

Unlike the prototype, where the conveyor is made in the form of two parallel chains, which does not allow the production of curved rods different geometries, since the geometry of the rod is created by the distance between the chains and the location of the hooks on these chains, in the proposed technical solution the conveyor is equipped with one chain, which can be equipped with different types of brackets with different pitches (since it is possible to reinstall the brackets) and with different geometric dimensions, thus on one line it is possible to produce curved rods (finished products) of various geometries, which ensures the versatility of the claimed device.

In the proposed technical solution, in contrast to the prototype, the presence of a grip cleaning unit allows you to clean the grips from residual compound (resin), and a grip lubrication unit allows you to protect the grips from sticking of the compound and improve the removal of the molded rod from the grips.

The proposed technical solutions, due to the presence of new design features of the device and the method of manufacturing curved polymer composite rods on a production line, increase the productivity of the claimed device.

Thus, thanks to the improvement of the technological line and the method of manufacturing products on it, the stated technical result is achieved, which consists in obtaining durable (high-quality baked) continuous curved polymer composite rods (including in places of their kinks), which during operation provide a reliable connection in three-layer fencing designs,

The implementation of the proposed group of inventions makes it possible to solve the stated technical problem and ensure the achievement of the stated technical result.

The proposed technological line has constructive unity and implements a common functional purpose (functional unity). The claimed device and method are interconnected by a single inventive concept.

The proposed technical solutions do not clearly follow from the prior art. During the patent search process, no technical solutions were identified that coincide with their essential distinctive features; therefore, the claimed group of inventions satisfies the patentability condition of “inventive step”.

The prior art has not found an analogue characterized by features identical to all the essential features of the claimed group of inventions.

The applicant approved (tested) the proposed device and its method of operation, which confirmed its purpose, feasibility and performance, and therefore the claimed invention meets the patentability condition of “industrial applicability”.

Claims

FORMULA

A technological line for the production of continuous curved polymer composite rods, containing a creel with rovings, an impregnation bath, a squeezing device, a winding unit, a bundle laying unit equipped with a unit for reciprocating movement of the bundle in a plane perpendicular to its movement and is connected to a device for forming a curved rod, which is a conveyor with grippers installed on it, on which a curing oven is mounted, wherein the molding device contains a device for removing a continuous curved polymer composite rod, characterized in that between the creel with rovings and the heated impregnation bath, there is a device for tensioning and drying the roving threads, between the winding unit and the bundle laying unit there is a furnace for preheating the bundle, the carriage of the bundle laying unit is made with at least one guide hole, the forming device additionally contains a heating device for the grips and a cooling device for the cured composite rod, the conveyor is made in the form of one central chain moving in the groove , on which brackets with grips installed on them are installed, there is a control panel.

2. The production line according to claim 1, characterized in that the device for forming the curved rod contains a unit for cleaning the grips from resin residues.

3. The production line according to claim 1, characterized in that the device for forming a curved rod contains a grip lubrication unit.

4. A method for manufacturing continuous curved polymer composite rods, characterized by the fact that the roving is unwinded from a creel, impregnated with a compound in an impregnation bath, the excess compound is squeezed out in a squeezing device, the resulting bundle is directed to a winding unit and then to a laying device, fed to the conveyor grippers forming devices, forming a curved tow configuration, it is moved by means of a conveyor into a curing oven, the cured curved polymer composite rod is wound onto a winding device through a removal device, or cut into measured pieces, characterized in that the roving threads wound from the creel bobbins are pulled and dried in a tensioning and drying device, then sent to a heated bath, where they are impregnated with a heated compound, the tow coming out of the winding unit is sent to the preheating furnace, the tow coming out of the preheating furnace is sent to at least one guide hole of the carriage of the tow laying unit, before laying the tow on the grippers, they are preheated Using the grip heating device, the curved polymer composite rod coming out of the curing oven is cooled in the cooling device, and the process of manufacturing continuous curved polymer composite rods is controlled from the control panel.

5. The method according to claim 3, characterized in that the grips are cleaned using a grip cleaning device.

6. Method according to claim 4 or 5, characterized in that the grips are lubricated by means of a grip lubrication device.