Pressing device and pressing method for glass fiber reinforced plastic grating preparation

Abstract

The pressing device comprises a top plate assembly, a plurality of pressing plates which are parallel to one another and are sequentially connected to the lower portion of the top plate assembly at intervals, glue injection holes and glue outlet holes, the glue injection holes and the glue outlet holes are formed in the pressing plates in the vertical direction, and the glue injection holes communicate with the upper portions of the glue outlet holes. The multiple glue outlet holes downwards penetrate through the bottom face of the pressing plate and are sequentially arranged at intervals in the length extending direction of the pressing plate. According to the pressing device and the pressing method for preparing the glass fiber reinforced plastic grating, when the pressing plate is lifted, a high-pressure medium sequentially passes through the glue injection hole and the glue outlet hole and then scours glass fibers below at a high speed, the glass fibers adhered to the pressing plate are scoured into a mold, and the glass fibers are prevented from being brought out; and when the high-pressure medium is colloidal resin, the colloidal resin scoured downwards is the same as the injection molding resin material injected into the mold, so that the loss of the resin material caused by the fact that the resin is adhered to the pressing plate in the mold can be avoided, and the quality of the prepared glass fiber reinforced plastic grating can be further ensured.

Description

Technical Field

[0001] The invention relates to a pressing device and a pressing method for preparing glass fiber reinforced plastic gratings. Background Art

[0002] When manufacturing fiberglass reinforced plastic grating, the fibers are typically laid out in a mold and resin injected, followed by a press plate to compact the glass fibers. In existing technology, the press plate is a conventional plate-and-frame structure. As the press plate rises, it not only adheres to the resin, resulting in loss of resin injected into the mold and affecting product quality, but also pulls up the glass fibers arranged in the mold, resulting in relatively poor compaction and further affecting product quality. Summary of the Invention

[0003] The object of the present invention is to provide a compacting device and compacting method for preparing glass fiber reinforced plastic grating, which can ensure the compacting effect on glass fiber and the quality of the prepared glass fiber reinforced plastic grating is relatively good.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A pressing device for preparing fiberglass reinforced plastic grating includes a top plate assembly, a plurality of pressing plates connected to the bottom of the top plate assembly in parallel and arranged in sequence, glue injection holes opened on the pressing plate in the up-down direction, and glue outlet holes opened on the pressing plate in the up-down direction, the glue injection holes are connected to the top of the glue outlet holes, the glue outlet holes penetrate downwardly through the bottom surface of the pressing plate, and there are multiple glue outlet holes that are arranged in sequence along the length extension direction of the pressing plate.

[0006] Preferably, the glue injection hole passes through the top surface of the pressure plate upward, the top plate assembly includes a plurality of first plates arranged in sequence and spaced apart and respectively used to connect all the pressure plates, and the glue injection hole is located between adjacent first plates.

[0007] More preferably, the first plate body is parallel to the arrangement direction of the plurality of pressing plates.

[0008] More preferably, the top plate assembly further comprises two second plates respectively used to connect all the first plates, the two second plates are respectively connected to the two ends of the first plate along its length extension direction, and the glue injection hole is located between the two second plates.

[0009] More preferably, both ends of the first plate body extend beyond the two outermost pressure plates respectively.

[0010] Preferably, the number of the glue injection holes is smaller than the number of the glue outlet holes, and the pressure plate is provided with a connecting hole that passes through the interior thereof in the left-right direction, and the connecting hole is used to connect the glue injection hole located above it and the glue outlet hole located below it.

[0011] More preferably, the communicating hole is parallel to the longitudinal extension direction of the pressing plate.

[0012] A compacting method for preparing a glass fiber reinforced plastic grating is implemented by the above-mentioned compacting device for preparing a glass fiber reinforced plastic grating, comprising the following steps:

[0013] (1) applying pressure to the top plate assembly to press the glass fibers in the mold downwardly through the pressing plate so that the glue outlet holes are located directly above the corresponding glass fibers;

[0014] (2) lifting the pressing plate upward and injecting a high-pressure medium into the glue injection hole, so that the high-pressure medium flushes the glass fibers adhered to the pressing plate downward through the glue outlet hole;

[0015] The high-pressure medium is a gaseous medium, a volatile liquid medium, or a gelatinous resin. The mold is used to fill the injection molding resin. The gaseous medium and the liquid medium are insoluble in the injection molding resin. The gelatinous resin and the injection molding resin are made of the same material.

[0016] Preferably, in step (1), the glue outlet holes are aligned one by one with the horizontal and vertical intersections of the glass fibers along the vertical direction.

[0017] Preferably, in step (1), the pressing plate is vibrated up and down and / or front and back and / or left and right.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the pressing device and pressing method for preparing glass fiber reinforced plastic grating of the present invention have the following advantages:

[0019] When the pressing plate is raised, the high-pressure medium is injected through the injection hole. The high-pressure medium flushes the glass fiber below through the glue outlet hole at high speed, flushing the glass fiber adhered to the pressing plate into the mold to avoid bringing out the glass fiber, so that the quality of the produced FRP grating is relatively good;

[0020] When the high-pressure medium is a colloidal resin, the colloidal resin flushed downward is the same as the injection resin material injected into the mold, which can avoid the loss of resin material in the mold due to resin adhesion to the pressure plate, and further ensure that the quality of the produced fiberglass grating is relatively good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 is a structural schematic diagram of a pressing device according to a specific embodiment of the present invention;

[0022] Attachment Figure 2 For attachment Figure 1 A schematic diagram of the structure of the middle pressing device from a bottom view;

[0023] Attachment Figure 3 For attachment Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0024] Attachment Figure 4 For attachment Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0025] Attachment Figure 5 For attachment Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0026] Among them: 1, top plate assembly; 11, first plate body; 12, second plate body; 2, pressing plate; 21, glue injection hole; 22, glue outlet hole; 23, connecting hole. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be further described below in conjunction with specific embodiments and drawings.

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0034] See also Figure 1-5 As shown, this embodiment provides a pressing device for preparing fiberglass reinforced plastic grating, comprising a top plate assembly 1, a plurality of parallel pressing plates 2 connected below the top plate assembly 1 and arranged in sequence, glue injection holes 21 provided in the pressing plates 2 along the vertical direction, and glue outlet holes 22 provided in the pressing plates 2 along the vertical direction, wherein the glue injection holes 21 are connected above the glue outlet holes 22, and the glue outlet holes 22 extend downwardly through the bottom surface of the pressing plates 2. Each pressing plate 2 is provided with a plurality of glue outlet holes 22, which are arranged in sequence and in sequence along the length of the pressing plates 2.

[0035] In this embodiment, multiple pressing plates 2 are evenly spaced, and the multiple glue outlet holes 22 on each pressing plate 2 are also evenly spaced. Because the glass fibers arranged in the mold during the production of the FRP grating are crisscrossed, this arrangement allows the glue outlet holes 22 to contact the crisscrossing areas of the glass fibers. When high-pressure medium is injected through the glue injection holes 21, the high-pressure medium flowing downward from the glue outlet holes 22 can simultaneously flush the two glass fibers, achieving a relatively good separation effect on the glass fibers.

[0036] See also Figure 1As shown, the glue injection hole 21 passes upward through the top surface of the pressure plate 2. The top plate assembly 1 includes a plurality of first plate bodies 11 arranged in sequence and spaced apart and respectively used to connect all the pressure plates 2. The glue injection hole 21 is located between adjacent first plate bodies 11. In this embodiment, there are three first plate bodies 11, and the three first plate bodies 11 are parallel to each other and respectively parallel to the arrangement direction of the plurality of pressure plates 2. There are two glue injection holes 21 on each pressure plate 2, and the two glue injection holes 21 are located on different sides of the middle first plate body 11. This arrangement can prevent the first plate body 11 from interfering with the glue injection of the glue injection holes 21. In this embodiment, the number of glue injection holes 21 is less than the number of glue outlet holes 22. This arrangement can reduce the difficulty of glue injection.

[0037] See also Figure 4 As shown, the pressure plate 2 is provided with a connecting hole 23 that runs through it in the left-right direction. The connecting hole 23 is used to connect the glue injection hole 21 located above it with the glue outlet holes 22 located below it. Through this arrangement, the high-pressure medium injected from the glue injection hole 21 can be discharged from the multiple glue outlet holes 22 below after passing through the connecting hole 23.

[0038] In this embodiment, the glue injection hole 21 and the glue outlet hole 22 are parallel to each other and respectively arranged in the up and down directions, and the communication hole 23 is parallel to the length extension direction of the pressing plate 2 and perpendicular to the glue outlet hole 22 .

[0039] See also Figure 1 As shown, the top plate assembly 1 also includes two second plates 12 for connecting all the first plates 11 respectively. The two second plates 12 are respectively connected to the two end portions of the first plate 11 along its length extension direction. The glue injection hole 21 is located between the two second plates 12. This arrangement can avoid the second plate 12 from interfering with the glue injection of the glue injection hole 21.

[0040] In this embodiment, both ends of the first plate body 11 extend beyond the two outermost pressing plates 2 , that is, the second plate body 12 is located outside the outermost pressing plates 2 on the corresponding side.

[0041] A compacting method for preparing a glass fiber reinforced plastic grating is implemented by the above-mentioned compacting device for preparing a glass fiber reinforced plastic grating, comprising the following steps:

[0042] (1) Move the pressing device to the top of the mold and adjust its position so that the glue outlet holes 22 are aligned with the horizontal and vertical intersections of the glass fibers in the vertical direction; then apply pressure to the top plate assembly 1 to press the glass fibers in the mold downward through the pressing plate 2, so that the glue outlet holes 22 are located directly above the corresponding glass fibers;

[0043] At the same time, the pressing plate 2 is vibrated up and down and / or back and forth and / or left and right;

[0044] (2) The pressing plate 2 is raised upward, and at the same time, a gel resin is injected into the injection hole 21. The gel resin is flushed downward through the glue outlet 22 to flush the glass fiber adhered to the pressing plate 2. The flushed gel resin enters the mold. The gel resin injected into the injection hole 21 is the same material as the injection resin used to fill the mold.

[0045] The advantages of this compaction method are:

[0046] When the pressing plate 2 is raised, the gel resin is injected through the injection hole 21, and the gel resin flushes the glass fiber below through the glue outlet hole 22 at high speed, flushing the glass fiber adhered to the pressing plate 2 into the mold, avoiding the glass fiber being taken out, so that the quality of the prepared fiberglass grille is relatively good;

[0047] The colloidal resin flushed downward is the same as the injection resin material injected into the mold, which can avoid the loss of resin material in the mold due to the adhesion of resin to the pressing plate 2, and further ensure that the quality of the obtained fiberglass grille is relatively good.

[0048] In other embodiments, the high-pressure medium may also be a gas medium or a volatile liquid medium, and both the gas medium and the liquid medium are insoluble in the injection resin in the mold.

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressing device for preparing glass fiber reinforced plastic grating, characterized by: It includes a top plate assembly, a plurality of pressure plates connected to the bottom of the top plate assembly in parallel and arranged in sequence, glue injection holes opened on the pressure plate along the up and down directions, and glue outlet holes opened on the pressure plate along the up and down directions. The glue injection holes are connected to the top of the glue outlet holes, and the glue outlet holes penetrate downwardly through the bottom surface of the pressure plate. There are multiple glue outlet holes and they are arranged in sequence along the length extension direction of the pressure plate.

2. The pressing device for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The glue injection hole passes through the top surface of the pressing plate upwardly. The top plate assembly includes a plurality of first plates arranged in sequence and spaced apart and respectively used to connect all the pressing plates. The glue injection hole is located between adjacent first plates.

3. The pressing device for preparing glass fiber reinforced plastic grating according to claim 2, characterized in that: The first plate body is parallel to the arrangement direction of the plurality of pressing plates.

4. The pressing device for preparing glass fiber reinforced plastic grating according to claim 2, characterized in that: The top plate assembly also includes two second plates respectively used to connect all the first plates, the two second plates are respectively connected to the two ends of the first plate along its length extension direction, and the glue injection hole is located between the two second plates.

5. The pressing device for preparing glass fiber reinforced plastic grating according to claim 4, characterized in that: Two ends of the first plate body respectively extend beyond the two outermost pressing plates.

6. The pressing device for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The number of the glue injection holes is smaller than the number of the glue outlet holes. The pressure plate is provided with a connecting hole that passes through the interior thereof in the left-right direction. The connecting hole is used to connect the glue injection holes above it and the glue outlet holes below it.

7. The pressing device for preparing glass fiber reinforced plastic grating according to claim 6, characterized in that: The communicating hole is parallel to the longitudinal extension direction of the pressing plate.

8. A compacting method for preparing a glass fiber reinforced plastic grating, which is achieved by using the compacting device for preparing a glass fiber reinforced plastic grating according to any one of claims 1 to 7, characterized in that: The following steps are involved: (1) applying pressure to the top plate assembly to press the glass fibers in the mold downwardly through the pressing plate so that the glue outlet holes are located directly above the corresponding glass fibers; (2) lifting the pressing plate upward and injecting a high-pressure medium into the glue injection hole, so that the high-pressure medium flushes the glass fibers adhered to the pressing plate downward through the glue outlet hole; The high-pressure medium is a gaseous medium, a volatile liquid medium, or a gelatinous resin. The mold is used to fill the injection molding resin. The gaseous medium and the liquid medium are insoluble in the injection molding resin. The gelatinous resin and the injection molding resin are made of the same material.

9. The compacting method for preparing glass fiber reinforced plastic grating according to claim 8, characterized in that: In step (1), the glue outlet holes are aligned one by one with the horizontal and vertical intersections of the glass fibers along the vertical direction.

10. The compacting method for preparing glass fiber reinforced plastic grating according to claim 8, characterized in that: In step (1), the pressing plate is vibrated up and down and / or front and back and / or left and right.

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