Pultrusion device for glass fiber reinforced plastic radome

Abstract

The utility model discloses a pultrusion device for a glass fiber reinforced plastic radome, and belongs to the field of radomes. A pultrusion device for a glass fiber reinforced plastic radome comprises an infiltration box, a guide unit and a power device, the infiltration box comprises an infiltration tank and an excess material storage tank, a resin glue solution used for covering a glass fiber body is stored in the infiltration tank, the glass fiber body is connected with the power device, and the power device is used for driving the glass fiber body to move along the guide unit; the glass fiber body is divided into a descending area, an infiltration area, an ascending area and an excess material separation area; and an excess material extrusion plate and an excess material removing unit are arranged on the infiltration box. According to the pultrusion device for the glass fiber reinforced plastic antenna housing, the excess material removing unit and other parts are arranged in the infiltration box, the first scraper blade and the second scraper blade in the excess material removing unit are distributed in the front-back staggered mode, redundant resin glue liquid covering a glass fiber body can be scraped away, and the resin glue liquid is prevented from being scattered all around.

Description

Technical Field

[0001] The utility model relates to the field of radomes, and particularly relates to a pultrusion forming device for a fiberglass radome. Background Technique

[0002] A radome is a structure that protects the antenna system from the external environment, and can protect the antenna system from the influences of wind, rain, snow, ice, sand and dust, and solar radiation, etc., making the working performance of the antenna system relatively stable and reliable, and at the same time reducing the wear, corrosion and aging of the antenna system.

[0003] At present, the fiberglass radome mainly uses unsaturated polyester resin as the matrix and alkali-free glass fiber as the reinforcing material, and is pultruded and cured by heating through a mold. It has been widely used in the construction of domestic and foreign base station facilities and is a conventional accessory for base station construction.

[0004] In the Chinese patent with the publication number CN111393818A, a fiberglass pultruded radome for a 5G base station and its preparation method, it is disclosed that: the fiberglass yarn in the preforming die enters the glue injection box through the guiding device and is infiltrated by the mixture A to obtain the fiberglass yarn infiltrated by the mixture A.

[0005] However, when the above device is used, the following problems exist:

[0006] During the infiltration process of the fiberglass yarn, since the yarn is completely mixed with the resin glue, when the fiberglass yarn is discharged from the resin glue, more resin glue will adhere to the fiberglass yarn. These resin glues will fall under the action of gravity as the fiberglass yarn moves, resulting in resin glue falling between the infiltration area and the forming area. These resin glues will solidify to form spots, which brings a lot of inconvenience to the subsequent cleaning. At the same time, the resin glue directly drops, and the difficulty of subsequent reuse is greater than the cost of collection, which leads to the waste of resin glue raw materials and increases the cost input. Therefore, this application proposes a pultrusion forming device for a fiberglass radome. Utility Model Content

[0007] The utility model provides a pultrusion forming device for a fiberglass radome, which can solve the problems of waste of resin glue raw materials and increased difficulty in cleaning the equipment existing in the preparation process of the fiberglass radome in the prior art.

[0008] A pultrusion forming device for a fiberglass radome includes an infiltration tank, a guiding unit, and a power device. An infiltration tank is arranged in the infiltration tank, and a resin glue for covering the fiberglass body is stored in the infiltration tank. The fiberglass body is connected to the power device, and the power device is used to drive the fiberglass body to move along the guiding unit;

[0009] The infiltration tank is divided into a descending area, an infiltration area, an ascending area, and a waste separation area;

[0010] A surplus material extrusion plate and a surplus material removal unit are provided on the infiltration tank.

[0011] The surplus material removal unit includes an outer threaded tube, an inner tube, a first scraper, and a second scraper. An installation groove is provided in the surplus material extrusion plate. The outer threaded tube is provided with a threaded structure. The inner tube is inserted into the outer threaded tube. The first scraper and the second scraper are distributed staggeredly front and back on the inner tube.

[0012] In a further technical solution, a surplus material storage groove is provided in the infiltration tank, and a surplus material storage box is provided in the surplus material storage groove.

[0013] In a further technical solution, a push plate and a lifting unit are provided on the upper side of the surplus material storage box. The lifting unit is provided on the lower side of the push plate. The lifting unit is provided on an installation frame, and the installation frame is provided on the infiltration tank.

[0014] In a further technical solution, the inner tube is provided in a horn shape.

[0015] In a further technical solution, the first scraper and the second scraper have the same cross-section. The cross-section of the first scraper includes a rectangular area and an arc area, and the arc area abuts against the outer wall of the glass fiber body.

[0016] In a further technical solution, a diversion port is provided at the bottom of the inner tube.

[0017] In a further technical solution, two joints are provided at both ends of the outer threaded tube, and the joints are threadedly connected to the outer threaded tube.

[0018] In a further technical solution, a seal is inserted into the joint. The seal is connected to a compression spring, and the compression spring is used to provide an elastic force for the seal to abut against the surplus material extrusion plate.

[0019] In a further technical solution, the threaded structure is replaced with a connection structure. The connection structure includes two sets of threaded portions and an intermediate smooth portion. The two sets of threaded portions are respectively provided on both sides of the outer threaded tube.

[0020] In a further technical solution, the two sets of threaded portions are respectively threadedly connected to the two joints, and the intermediate smooth portion is slidably connected to the installation groove.

[0021] Beneficial effects:

[0022] 1. The utility model provides a pultrusion forming device for a fiberglass radome. Components such as a waste material removal unit are arranged in an impregnation tank. The first scraper and the second scraper in the waste material removal unit are distributed staggeredly front and back. When the fiberglass body passes through the first scraper, the excess resin glue on it will be pushed together and then slide along the outer surface of the fiberglass body under the action of gravity. As the fiberglass body moves to the position of the second scraper, the second scraper separates and aggregates the resin glue again, so that the resin glue finally falls into the diversion port at the bottom of the inner tube under the action of gravity. The resin glue finally enters the inside of the waste material storage box along the diversion port, which can scrape off the excess resin glue covering the fiberglass body and prevent the resin glue from spilling everywhere.

[0023] In the utility model, the impregnation area is located at the bottom of the impregnation tank. At this place, the fiberglass body is fully mixed with the resin glue inside the impregnation tank, and the resin glue covers the outside of the fiberglass body. By setting the impregnation area at the bottom of the impregnation tank, the movement of the fiberglass body can drive a small movement of the resin glue in the impregnation tank. When multiple groups of fiberglass bodies move simultaneously, it can prevent the resin glue from depositing at the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the pultrusion forming device for the fiberglass radome provided by the utility model;

[0025] Figure 2 is a top view of the pultrusion forming device for the fiberglass radome in the utility model;

[0026] Figure 3 is a schematic internal structure diagram of the pultrusion forming device for the fiberglass radome in the utility model;

[0027] Figure 4 For the utility model Figure 3 is an enlarged structural diagram of part A in the utility model;

[0028] Figure 5 is the first split view of the waste material removal unit in the utility model;

[0029] Figure 6 is the second split view of the waste material removal unit in the utility model;

[0030] Figure 7 is the third split view of the waste material removal unit in the utility model;

[0031] Figure 8 is the fourth split view of the waste material removal unit in the utility model.

[0032] Description of the reference numerals:

[0033] 1. Infiltration tank; 101. Infiltration trough; 102. Scrap collection box; 2. Glass fiber body; 201. Descending area; 202. Infiltration area; 203. Ascending area; 204. Scrap separation area; 3. Guide unit; 4. Scrap extrusion plate; 401. Installation groove; 5. Pushing plate; 6. Lifting unit; 7. Scrap cleaning unit; 701. Outer threaded pipe; 702. Inner pipe; 703. First scraper; 704. Second scraper; 705. Diversion port; 706. Connector; 707. Seal; 708. Extrusion spring. Detailed implementation manners

[0034] The following will describe the detailed implementation manners of the present utility model in detail, but it should be understood that the protection scope of the present utility model is not limited by the detailed implementation manners.

[0035] As Figures 1 to 8 shown, a pultrusion forming device for a fiberglass radome provided by an embodiment of the present utility model includes an infiltration tank 1, a guide unit 3, and a power device. The infiltration tank 1 includes an infiltration trough 101 and a scrap collection trough. The infiltration trough 101 stores resin glue for covering the glass fiber body 2. The glass fiber body 2 is connected to the power device, and the power device is used to drive the glass fiber body 2 to move along the guide unit 3. The power device can adopt multiple winding machines, and the winding machines are arranged at both ends of the glass fiber body 2 to pull it to move.

[0036] The glass fiber body 2 moves along the guide unit 3. Through the guide unit 3, the infiltration tank 1 can be divided into a descending area 201, an infiltration area 202, an ascending area 203, and a scrap separation area 204. The descending area 201 is used to let the glass fiber body 2 enter the bottom of the infiltration trough 101, and the infiltration area 202 is located at the bottom of the infiltration trough 101. At this place, the glass fiber body 2 is fully mixed with the resin glue inside the infiltration tank 1, and the resin glue covers the outside of the glass fiber body 2. The glass fiber body 2 is separated from the resin glue in the ascending area 203. The excess resin glue on the glass fiber body 2 is scraped off from the glass fiber body 2 at the scrap separation area 204 and enters the scrap collection trough. The infiltration area 202 is arranged at the bottom of the infiltration trough 101. As the glass fiber body 2 moves, it can drive a small movement of the resin glue in the infiltration trough 101. Multiple glass fiber bodies 2 move simultaneously, thus avoiding the deposition of the resin glue at the bottom.

[0037] By arranging the guide unit 3 at the infiltration tank 1, the glass fiber body 2 is sent to the bottom of the infiltration trough 101, and the glass fiber body 2 can be completely immersed in the resin glue. In this way, its outer surface can be completely covered with the resin glue. Compared with the spraying method, the method of completely immersing in the resin glue has lower operation difficulty (it is not necessary to control values such as the spraying amount, spraying angle, and spraying force), and can completely cover the resin glue on the glass fiber body 2 with a better covering effect.

[0038] Further, in order to collect the resin glue dropped on the glass fiber body 2, a waste material storage box 102 is arranged in the waste material storage tank, and the waste material storage box 102 is inserted into the impregnation tank 1.

[0039] In order to collect the excess resin glue on the glass fiber body 2 and prevent the resin glue from dropping randomly, a waste material extrusion plate 4 is arranged on the impregnation tank 1, and a waste material removal unit 7 corresponding to the glass fiber body 2 is arranged on the waste material extrusion plate 4.

[0040] Refer to Figures 1 - 3 , after the glass fiber body 2 completely enters the resin glue, in the rising area 203 and the waste material separation area 204, excess resin glue will drip under the action of gravity. In the waste material separation area 204, the resin glue will gather at the bottom of the glass fiber body 2, but under the action of the adhesion between materials, it will not drop directly. In order to remove this part of the resin glue and thus reduce the burden on the waste material removal unit 7, a push plate 5 and a lifting unit 6 are arranged on the upper side of the waste material storage box 102. The lifting unit 6 is used to drive the push plate 5 to move up and down, so that the push plate 5 is located on the lower side of the glass fiber body 2 and can separate the resin glue gathered at the bottom of the glass fiber body 2 from the glass fiber body 2. Specifically, the lifting unit 6 is arranged on the mounting rack, and the mounting rack is arranged on the impregnation tank 1.

[0041] Refer to Figures 3 - 8 , the waste material removal unit 7 includes a threaded outer tube 701, an inner tube 702, a first scraping plate 703, a second scraping plate 704, and a diversion port 705. A number of mounting grooves 401 are arranged in the waste material extrusion plate 4. In one implementation, the threaded outer tube 701 is provided with a threaded structure, and the threaded structure is threadedly connected to the mounting groove 401. The inner tube 702 is inserted into the threaded outer tube 701, and the inner tube 702 is set in a trumpet shape, so that it is more convenient for the glass fiber body 2 to be inserted into the inner tube 702.

[0042] The first scraping plate 703 and the second scraping plate 704 are both circumferentially arrayed around the center line of the inner tube 702. The first scraping plate 703 and the second scraping plate 704 are staggered front and back, and the first scraping plate 703 and the second scraping plate 704 can cover the entire glass fiber body 2 in the inner tube 702, and can scrape the entire outer surface of the glass fiber body 2. The shapes and sizes of the first scraping plate 703 and the second scraping plate 704 are the same and both are provided with three. The first scraping plate 703 and the second scraping plate 704 are set in an arc shape. The degree of a single first scraping plate 703 needs to be greater than 60°, so as to cover the entire glass fiber body 2. The first scraping plate 703 and the second scraping plate 704 are both provided with multiple groups, and multiple groups of the first scraping plate 703 and the second scraping plate 704 are linearly arrayed in the inner tube 702.

[0043] The first squeegee 703 and the second squeegee 704 are staggered front and back. When the glass fiber body 2 passes through the first squeegee 703, the excess resin glue on it will be pushed together and then slide along the outer surface of the glass fiber body 2 under the action of gravity. As the glass fiber body 2 moves to the position of the second squeegee 704, the second squeegee 704 separates and aggregates the resin glue again, so that the resin glue finally falls into the diversion port 705 at the bottom of the inner tube 702 under the action of gravity. The resin glue finally enters the inside of the waste material storage box 102 along the diversion port 705, which can remove the resin glue on the glass fiber body 2 in zones and avoid the resin glue from aggregating at the feeding port of the inner tube 702.

[0044] For reference Figure 3 、 Figure 4 For reference

[0045] For reference Figure 5 For reference

[0046] In order to improve the sealing performance at the threaded outer tube 701 and prevent a large amount of resin glue from adhering to its threads, two connectors 706 are provided at both ends of the threaded outer tube 701. The connectors 706 are threadedly connected to the threaded outer tube 701. A seal 707 is inserted into the connector 706, and the connector 706 is movably connected to the seal 707, and the two can slide relative to each other or rotate relative to each other. The seal 707 is connected to a compression spring 708, and the compression spring 708 is used to provide an elastic force that makes the seal 707 abut against the waste material extrusion plate 4. A gasket is installed on the seal 707, and gaskets are also provided at the positions where the connector 706 is connected to the threaded outer tube 701.

[0047] The threaded outer tube 701 is detachably connected to the waste material extrusion plate 4 through the connector 706, and different-sized threaded outer tubes 701 can be replaced according to needs to adapt to the waste material scraping work of glass fiber bodies 2 with different diameters.

[0048] In another embodiment, a connection structure is provided on the threaded outer tube 701. The connection structure includes two sets of threaded parts and an intermediate smooth part. The two sets of threaded parts are respectively provided on both sides of the threaded outer tube 701, and the two sets of threaded parts are respectively threadedly connected to the two connectors 706. The intermediate smooth part is slidably connected to the installation groove 401.

[0049] In summary, a pultrusion forming device for a fiberglass radome provided by an embodiment of the present utility model is provided with components such as a waste material removal unit 7 in the infiltration tank 1. The first scraper 703 and the second scraper 704 in the waste material removal unit 7 are distributed staggeredly front and back. When the glass fiber body 2 passes through the first scraper 703, the excess resin glue on it will be pushed together and then slide along the outer surface of the glass fiber body 2 under the action of gravity. As the glass fiber body 2 moves to the position of the second scraper 704, the second scraper 704 separates and aggregates the resin glue again, so that the resin glue finally falls into the diversion port 705 at the bottom of the inner tube 702 under the action of gravity. The resin glue finally enters the interior of the waste material storage box 102 along the diversion port 705, which can scrape off the excess resin glue covering the glass fiber body 2 and prevent the resin glue from spilling everywhere.

[0050] After the glass fiber body 2 is infiltrated, it can be formed under the cooperation of a preforming device, a thermal curing device, a traction device, and a cutting device, and finally a radome is formed.

[0051] The above-disclosed are only several specific embodiments of the present utility model. However, the embodiments of the present utility model are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A fiberglass antenna cover pultrusion molding device, comprising an impregnation box (1), a guide unit (3), and a power device, wherein the impregnation box (1) is provided with an impregnation tank (101), the impregnation tank (101) stores a resin glue for covering a glass fiber body (2), the glass fiber body (2) is connected to the power device, and the power device is used to drive the glass fiber body (2) to move along the guide unit (3), characterized in that: The infiltration box (1) is divided into a descending area (201), an infiltration area (202), an ascending area (203), and a residual material separation area (204); The infiltration box (1) is provided with a residual material extrusion plate (4) and a residual material removal unit (7); The residual material removal unit (7) comprises a threaded outer tube (701), an inner tube (702), a first scraper (703), and a second scraper (704); a mounting groove (401) is provided in the residual material extrusion plate (4); a threaded structure is provided on the threaded outer tube (701); the inner tube (702) is inserted into the threaded outer tube (701); and the first scraper (703) and the second scraper (704) are staggered and distributed on the inner tube (702) in a front-rear manner.

2. A fiberglass antenna cover pultrusion forming device as claimed in claim 1, characterized in that: The infiltration box (1) is provided with a residual material storage groove, and a residual material storage box (102) is provided in the residual material storage groove.

3. A fiberglass antenna cover pultrusion forming device as claimed in claim 2, characterized in that: A push plate (5) and a lifting unit (6) are arranged on the upper side of the residual material storage box (102); the lifting unit (6) is arranged on the lower side of the push plate (5); the lifting unit (6) is arranged on a mounting frame, and the mounting frame is arranged on the infiltration box (1).

4. A fiberglass antenna cover pultrusion molding device as claimed in claim 1, characterized in that: The inner tube (702) is configured to be in a trumpet shape.

5. The fiberglass antenna cover pultrusion molding device according to claim 1, characterized in that: The cross-sections of the first scraper (703) and the second scraper (704) are the same; the cross-section of the first scraper (703) comprises a rectangular area and an arc-shaped area, and the arc-shaped area abuts against the outer wall of the glass fiber body (2).

6. A fiberglass antenna cover pultrusion molding device as claimed in claim 1, characterized in that: The bottom of the inner tube (702) is provided with a flow guide port (705).

7. A fiberglass antenna cover pultrusion molding device as claimed in claim 1, characterized in that: The threaded outer tube (701) is provided with two joints (706) located at two ends respectively, and the joints (706) are connected to the threaded outer tube (701) via threads.

8. A fiberglass antenna cover pultrusion molding device as claimed in claim 7, characterized in that: A sealing member (707) is inserted into the joint (706), and the sealing member (707) is connected to an extrusion spring (708). The extrusion spring (708) is used to provide an elastic force for the sealing member (707) to press against the excess material extrusion plate (4).

9. The fiberglass antenna cover pultrusion molding device according to claim 1, characterized in that: The threaded structure is replaced by a connection structure, which comprises two sets of threaded parts and a smooth part in the middle, and the two sets of threaded parts are respectively arranged on both sides of the threaded outer tube (701).

10. A fiberglass antenna cover pultrusion forming device as claimed in claim 9, characterized in that: The two groups of threaded portions are respectively threadedly connected to the two joints (706), and the middle smooth portion is slidably connected to the mounting groove (401).

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