Vacuum auxiliary device for glass fiber reinforced plastic production

By designing a vacuum auxiliary device during the production process of fiberglass, cutting bubbles with negative pressure and gravity, and combining defoaming components and stirring leaves to remove bubbles, the problem of bubbles in the resin solution affecting material performance is solved, and the mechanical properties of fiberglass are improved.

CN223290369UActive Publication Date: 2025-09-02XIANGYANG JIANDING FRP CO LTD
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Patent Information

Application Number
CN202422589402.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-09-02
Estimated Expiration
2034-10-25

AI Technical Summary

Technical Problem

The existing fiberglass vacuum auxiliary devices are prone to mix air when the resin solution is reduced to the bottom of the container, resulting in bubble formation, affecting the mechanical strength and toughness of the material, and making it difficult to completely discharge air.

Method used

A vacuum auxiliary device for fiberglass production is designed, including a silicone vacuum bag, a negative pressure vacuum pump, a defoaming mechanism and a defoaming assembly. Through negative pressure and gravity, the resin solution cuts bubbles in the flow chamber, and uses a one-way exhaust valve and a mini vacuum pump to discharge the gas, and combines the stirring blades driven by the motor to further defoam.

Benefits of technology

Effectively removes bubbles in the resin solution, improves the mechanical strength and toughness of the material, and ensures the quality of fiberglass.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a vacuum auxiliary device for glass fiber reinforced plastic production. A negative pressure vacuum pump is arranged on one side of the silica gel vacuum bag, the air inlet end of the negative pressure vacuum pump is communicated with a connecting pipe, and the silica gel vacuum bag is communicated with the negative pressure vacuum pump through the connecting pipe; when a resin solution is extracted by utilizing negative pressure, resin enters the barrel body by utilizing a hose, impacts the flowing cavity under the action of the negative pressure and gravity, collides with the grid plate after passing through the flowing cavity, and is cut when passing through the grid plate, so that the resin solution is extracted, and the resin solution is extracted. And meanwhile, air is exhausted through the one-way exhaust valve by utilizing the rising trend of gas, and then vacuum is formed in the barrel through the work of the micro vacuum pump, so that a large number of bubbles can be removed in advance before resin enters the silica gel vacuum bag, and the mechanical strength and toughness of materials are prevented from being influenced when too many bubbles exist in the silica gel vacuum bag.
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Description

Technical Field

[0001] The present application relates to the technical field of glass fiber reinforced plastic production, and in particular to a vacuum auxiliary device for glass fiber reinforced plastic production. Background Art

[0002] FRP, also known as glass fiber reinforced plastic, is a composite material composed of glass fiber and resin, and is widely used in chemical industry, water treatment and other fields. However, due to the mixing of air or other gases into the resin during the preparation process, bubbles are formed. These bubbles easily weaken the mechanical strength and toughness of the FRP during molding, resulting in a decrease in the material's mechanical properties such as tensile strength, compression strength, and bending strength. Therefore, vacuum technology is needed to improve the distribution of resin in the glass fiber or other reinforcing materials, reduce bubbles and improve product quality.

[0003] In the related art, the existing FRP vacuum-assisted device is a preparation device for infusion under vacuum conditions, that is, the glass fiber reinforcement material is placed in the closed mold cavity, and the resin glue liquid is pumped into the silicone vacuum bag and the mold cavity by positive and negative pressure, soaking the glass fiber reinforcement material, and then solidifying and demolding the molded product. However, since the resin solution is mostly stored in a container, the resin solution will gradually decrease in the container so that the resin can use the negative pressure of the vacuum pump to enter the vacuum bag and the mold cavity for solidification;

[0004] However, as the resin solution gradually decreases in the container, a large amount of air will be mixed into the vacuum bag and the mold cavity when the resin is reduced to the bottom of the container. In addition, since the resin injection port is far away from the vacuum extraction port, it is difficult to completely expel the air when the vacuum pump is extracted.

[0005] Therefore, those skilled in the art provide a vacuum-assisted device for glass fiber reinforced plastic production to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the present application provides a vacuum assisted device for glass fiber reinforced plastic production.

[0007] The vacuum-assisted device for glass fiber reinforced plastic production provided in this application adopts the following technical solution:

[0008] A vacuum assist device for glass fiber reinforced plastic production, comprising:

[0009] A silica gel vacuum bag, wherein a negative pressure vacuum pump is provided on one side of the silica gel vacuum bag, an air inlet end of the negative pressure vacuum pump is connected to a connecting pipe, and the silica gel vacuum bag and the negative pressure vacuum pump are connected through the connecting pipe;

[0010] A defoaming mechanism is provided on one side of the top of the silicone vacuum bag and includes a cylinder connected to one side of the top of the silicone vacuum bag, the top of the cylinder is connected to a hose, a micro vacuum pump is installed at the bottom of one side of the cylinder, and a vertical pipe connected to the air inlet end of the micro vacuum pump, one side of the vertical pipe is connected to two horizontal pipes, and the ends of the two horizontal pipes away from the vertical pipe both penetrate the cylinder and extend into the interior of the cylinder to extract the air inside the cylinder; and

[0011] The defoaming component is fixedly installed on the top of the inner cavity of the cylinder to defoam the resin entering the cylinder. The defoaming component is installed on the bottom of the defoaming component.

[0012] By adopting the above technical solution, a large number of bubbles can be removed before the resin solution enters the silicone vacuum bag, thereby avoiding the mechanical strength and toughness of the material being affected by excessive bubbles in the silicone vacuum bag.

[0013] Preferably, the defoaming assembly includes an upper fixing seat fixedly mounted on the inner wall of the cylinder, a lower flow seat is provided at the bottom of the upper fixing seat, the upper fixing seat and the lower flow seat together form a flow cavity, and a grid plate is fixedly mounted between the upper fixing seat and the lower flow seat;

[0014] By adopting the above technical solution, the flow trend of the resin solution can be utilized to cut the bubbles inside the resin, so that the bubbles inside the resin are broken, thereby achieving the purpose of defoaming the resin.

[0015] Preferably, the top of the upper fixing seat is connected to a plurality of one-way exhaust valves, the one-way exhaust valves are distributed in an annular shape on the top of the upper fixing seat, and the one-way exhaust valves are connected to the flow chamber;

[0016] By adopting the above technical solution, the air can be discharged in time when the bubbles are broken, thus preventing the gas from remaining inside the flow cavity.

[0017] Preferably, the defoaming assembly includes a protective shell fixedly mounted on the bottom of the lower flow seat, a rotating rod is rotatably mounted inside the protective shell, the bottom end of the rotating rod passes through the protective shell and extends into the interior of the cylinder, and a stirring blade is fixedly mounted on one end of the rotating rod located inside the cylinder;

[0018] Preferably, a driven bevel gear is installed on the surface of the rotating rod located inside the protective shell, a motor is installed on one side of the cylinder, the output end of the motor sequentially passes through the cylinder and the protective shell and extends into the interior of the protective shell, a driving bevel gear is fixedly installed on the output end of the motor, and the driving bevel gear and the driven bevel gear are meshedly connected;

[0019] By adopting the above technical solution, the resin can be stirred and defoamed, further improving the defoaming effect of the device.

[0020] Preferably, a bearing seat is installed at the penetration point of the rotating rod and the protective shell, and the protective shell and the rotating rod are rotatably connected through the bearing seat.

[0021] In summary, this application has the following beneficial technical effects:

[0022] 1. The vacuum-assisted device for FRP production uses a hose to extract the resin solution using negative pressure. The resin enters the interior of the cylinder through the hose, and under the action of negative pressure and gravity, the resin impacts the flow cavity. The resin then collides with the grid plate through the flow cavity and is cut when passing through the grid plate. At the same time, the upward trend of the gas is used to discharge the air through the one-way exhaust valve, and then a micro vacuum pump is used to form a vacuum inside the cylinder. In this way, a large number of bubbles are removed before the resin enters the silicone vacuum bag, avoiding the mechanical strength and toughness of the material being affected by excessive bubbles inside the silicone vacuum bag.

[0023] 2. The vacuum-assisted device for FRP production, after the resin is defoamed by the defoaming component, flows to the bottom of the cylinder cavity. At the same time, the motor drives the driving bevel gear and the driven bevel gear to drive the rotating rod and the stirring blade to rotate, stirring the resin at the bottom of the cylinder, thereby further improving the resin defoaming effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a vacuum-assisted device for glass fiber reinforced plastic production according to an embodiment of the present application;

[0025] Figure 2 This is a schematic cross-sectional view of a cylinder in a vacuum-assisted device for glass fiber reinforced plastic production according to an embodiment of the present application;

[0026] Figure 3 This is a schematic cross-sectional view of a defoaming component in a vacuum-assisted device for glass fiber reinforced plastic production according to an embodiment of the present application;

[0027] Figure 4 This is a schematic structural diagram of a defoaming component of a vacuum-assisted device for glass fiber reinforced plastic production according to an embodiment of the present application;

[0028] Figure 5 This is a vacuum assisted device for glass fiber reinforced plastic production in the embodiment of the present application. Figure 4 A schematic diagram of the enlarged structure.

[0029] Explanation of the accompanying symbols: 1. Silicone vacuum bag; 2. Negative pressure vacuum pump; 3. Connecting pipe; 4. Defoaming mechanism; 41. Cylinder; 42. Hose; 43. Miniature vacuum pump; 44. Vertical pipe; 45. Horizontal pipe; 46. Defoaming assembly; 461. Upper fixed seat; 462. Lower flow seat; 463. Flow chamber; 464. Grid plate; 465. One-way exhaust valve; 47. Defoaming assembly; 471. Protective shell; 472. Rotating rod; 473. Stirring blade; 474. Driven bevel gear; 475. Motor; 476. Driving bevel gear. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The present application discloses a vacuum assist device for glass fiber reinforced plastic production. Figure 1-4 , a vacuum-assisted device for glass fiber reinforced plastic production, comprising:

[0032] A silicone vacuum bag 1 is provided with a negative pressure vacuum pump 2 on one side of the silicone vacuum bag 1. The air inlet end of the negative pressure vacuum pump 2 is connected with a connecting pipe 3. The silicone vacuum bag 1 and the negative pressure vacuum pump 2 are connected through the connecting pipe 3.

[0033] Reference Figure 2 as well as Figure 3 The defoaming mechanism 4 is arranged on one side of the top of the silicone vacuum bag 1 and includes a cylinder 41 connected to one side of the top of the silicone vacuum bag 1. The top of the cylinder 41 is connected to a hose 42. A micro vacuum pump 43 is installed at the bottom of one side of the cylinder 41, and a vertical pipe 44 connected to the air inlet end of the micro vacuum pump 43. One side of the vertical pipe 44 is connected to two horizontal pipes 45. The ends of the two horizontal pipes 45 away from the vertical pipe 44 both penetrate the cylinder 41 and extend into the interior of the cylinder 41 to extract the air inside the cylinder 41;

[0034] Defoaming assembly 46, which is fixedly mounted on the top of the inner cavity of cylinder 41 to remove bubbles from the resin entering cylinder 41, and a defoaming assembly 47 is mounted on the bottom of defoaming assembly 46; defoaming assembly 46 includes an upper fixed seat 461 fixedly mounted on the inner wall of cylinder 41, a lower flow seat 462 is provided at the bottom of the upper fixed seat 461, and a flow chamber 463 is formed between the upper fixed seat 461 and the lower flow seat 462, and a grid plate 464 is fixedly mounted between the upper fixed seat 461 and the lower flow seat 462;

[0035] In this embodiment, when the resin solution enters the interior of the cylinder 41, the resin impacts the flow cavity 463 under the action of negative pressure and gravity, causing the resin to flow through the flow cavity 463 and the grid plate 464 to the interior of the defoaming component 46. When the resin passes through the grid plate 464, the grid plate 464 cuts the resin and breaks the bubbles in the resin.

[0036] Please continue to refer to Figure 3 The top of the upper fixed seat 461 is connected to a plurality of one-way exhaust valves 465. The one-way exhaust valves 465 are distributed in an annular shape on the top of the upper fixed seat 461. The one-way exhaust valves 465 are connected to the flow chamber 463.

[0037] In this embodiment, after the grid plate 464 breaks the bubbles in the resin, the gas is discharged from the inner cavity of the flow cavity 463 due to its own upward trend and the negative pressure of the micro vacuum pump 43.

[0038] Reference Figure 2 、 Figure 4 as well as Figure 5 The defoaming assembly 47 includes a protective shell 471 fixedly mounted on the bottom of the lower flow seat 462. A rotating rod 472 is rotatably mounted inside the protective shell 471. The bottom end of the rotating rod 472 passes through the protective shell 471 and extends into the interior of the cylinder 41. A stirring blade 473 is fixedly mounted on one end of the rotating rod 472 located inside the cylinder 41.

[0039] A driven bevel gear 474 is mounted on the surface of the rotating rod 472 located inside the protective shell 471. A motor 475 is mounted on one side of the cylinder 41. The output end of the motor 475 passes through the cylinder 41 and the protective shell 471 in sequence and extends into the interior of the protective shell 471. A driving bevel gear 476 is fixedly mounted on the output end of the motor 475. The driving bevel gear 476 is meshedly connected to the driven bevel gear 474.

[0040] In this embodiment, after the resin is defoamed by the defoaming component 46, the resin flows to the bottom of the inner cavity of the cylinder 41. At the same time, the motor 475 is used to drive the active bevel gear 476 and the driven bevel gear 474, driving the rotating rod 472 and the stirring blade 473 to rotate, stirring and defoaming the resin at the bottom of the cylinder 41.

[0041] Please continue to refer to Figure 5 A bearing seat is installed at the penetration point of the rotating rod 472 and the protective shell 471, and the protective shell 471 and the rotating rod 472 are rotatably connected through the bearing seat;

[0042] In this embodiment, a stable support can be formed for the rotating rod 472 to avoid shaking during the operation of the stirring blade 473, which would affect the stirring and defoaming.

[0043] The working principle of the vacuum assist device for glass fiber reinforced plastic production in the embodiment of the present application is as follows: the negative pressure vacuum pump 2 uses the connecting pipe 3 to evacuate the interior of the silicone vacuum bag 1, and when the interior of the silicone vacuum bag 1 generates negative pressure, the negative pressure is transmitted to the interior of the hose 42 through the cylinder 41 to extract the resin solution. When the resin solution enters the interior of the cylinder 41, the resin impacts the flow cavity 463 under the action of negative pressure and gravity, causing the resin to flow through the flow cavity 463 and the grid plate 464 to the interior of the defoaming component 46, and the resin passes through the grid plate 464. At the same time, the grid plate 464 cuts the resin and breaks the bubbles in the resin. At the same time, the upward trend of the gas is used to discharge the air through the one-way exhaust valve 465, and then the micro vacuum pump 43 is used to form a vacuum inside the cylinder 41. After the resin is defoamed by the defoaming component 46, the resin flows to the bottom of the inner cavity of the cylinder 41. At the same time, the motor 475 is used to drive the active bevel gear 476 and the driven bevel gear 474, driving the rotating rod 472 and the stirring blade 473 to rotate, so as to stir and remove bubbles from the resin at the bottom of the cylinder 41.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A vacuum assisted device for glass fiber reinforced plastic production, characterized in that: include: A silica gel vacuum bag (1), wherein a negative pressure vacuum pump (2) is provided on one side of the silica gel vacuum bag (1), an air inlet end of the negative pressure vacuum pump (2) is connected to a connecting pipe (3), and the silica gel vacuum bag (1) and the negative pressure vacuum pump (2) are connected via the connecting pipe (3); A defoaming mechanism (4) is arranged on one side of the top of the silica gel vacuum bag (1) and comprises a cylinder (41) connected to one side of the top of the silica gel vacuum bag (1), the top of the cylinder (41) is connected to a hose (42), a micro vacuum pump (43) is installed at the bottom of one side of the cylinder (41), and a vertical pipe (44) connected to the air inlet end of the micro vacuum pump (43), one side of the vertical pipe (44) is connected to two horizontal pipes (45), and the ends of the two horizontal pipes (45) away from the vertical pipe (44) both penetrate the cylinder (41) and extend into the interior of the cylinder (41) to extract air from the interior of the cylinder (41); as well as A defoaming component (46) is fixedly installed on the top of the inner cavity of the cylinder (41) to defoam the resin entering the cylinder (41). A defoaming component (47) is installed at the bottom of the defoaming component (46).

2. A vacuum-assisted device for glass fiber reinforced plastic production according to claim 1, characterized in that: The defoaming assembly (46) includes an upper fixed seat (461) fixedly mounted on the inner wall of the cylinder (41); a lower flow seat (462) is provided at the bottom of the upper fixed seat (461); a flow cavity (463) is formed between the upper fixed seat (461) and the lower flow seat (462); and a grid plate (464) is fixedly mounted between the upper fixed seat (461) and the lower flow seat (462).

3. A vacuum-assisted device for glass fiber reinforced plastic production according to claim 2, characterized in that: The top of the upper fixed seat (461) is connected to a plurality of one-way exhaust valves (465). The one-way exhaust valves (465) are distributed in an annular shape on the top of the upper fixed seat (461). The one-way exhaust valves (465) are connected to the flow chamber (463).

4. A vacuum-assisted device for glass fiber reinforced plastic production according to claim 2, characterized in that: The defoaming assembly (47) includes a protective shell (471) fixedly mounted on the bottom of the lower flow seat (462), a rotating rod (472) is rotatably mounted inside the protective shell (471), the bottom end of the rotating rod (472) passes through the protective shell (471) and extends to the inside of the cylinder (41), and a stirring blade (473) is fixedly mounted on one end of the rotating rod (472) located inside the cylinder (41).

5. A vacuum-assisted device for glass fiber reinforced plastic production according to claim 4, characterized in that: A driven bevel gear (474) is installed on the surface of the rotating rod (472) located inside the protective shell (471); a motor (475) is installed on one side of the cylinder (41); an output end of the motor (475) sequentially passes through the cylinder (41) and the protective shell (471) and extends into the interior of the protective shell (471); a driving bevel gear (476) is fixedly installed on the output end of the motor (475); and the driving bevel gear (476) and the driven bevel gear (474) are meshedly connected.

6. A vacuum-assisted device for glass fiber reinforced plastic production according to claim 4, characterized in that: A bearing seat is installed at the penetration point of the rotating rod (472) and the protective shell (471), and the protective shell (471) and the rotating rod (472) are rotatably connected via the bearing seat.