A system for infusing epoxy resin for composite molding

Abstract

The utility model discloses a kind of composite material forming is perfused epoxy resin system, belong to composite material forming technical field, the composite material forming is perfused epoxy resin system including reaction kettle, intermittent adjusting mechanism and suction bubble subassembly;Intermittent adjusting mechanism includes support, first motor, disc, male shaft, moving plate, arc groove and stirring device;Suction bubble subassembly includes multiple movable grooves, floating ring, lightweight spring, suction bubble plate, suction bubble mouth, air duct and suction bubble machine.The composite material forming is perfused epoxy resin system by intermittent stirring to avoid local overheating, maintain resin low viscosity state;By double-motor design realizes motion and stirring decoupling, accurately controls reaction condition;Self-adapting suction bubble mouth is close to liquid level, in combination with negative pressure suction, significantly reduce micro-bubble residue, improve composite material compactness, solve the problem, such as uneven mixing, bubble residue in traditional epoxy resin perfusion, significantly improve composite material forming efficiency and product performance.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding technology, specifically a composite material molding injection epoxy resin system. Background Technology

[0002] Epoxy resins are a general term for organic compounds containing two or more epoxy groups in their molecules. With a few exceptions, their relative molecular mass is relatively low. The molecular structure of epoxy resins is characterized by the presence of reactive epoxy groups in the molecular chain. These epoxy groups can be located at the ends, in the middle, or in a cyclic structure. Furthermore, their excellent physical, mechanical, and electrical insulation properties, adhesion to various materials, and flexibility in processing are unmatched by other thermosetting plastics. Therefore, they can be used to make coatings, composite materials, castings, adhesives, molding materials, and injection molding materials, finding wide application in various sectors of the national economy.

[0003] During the epoxy resin casting process, air bubbles are easily generated for two reasons: firstly, the flowing liquid resin can carry away external air; secondly, air already present in the gap between the core and the outer shell can be introduced into the liquid resin. This mixed air eventually forms bubbles in the liquid resin before curing. After the epoxy resin cures, these bubbles can create cavities or holes inside or at the edges, affecting the quality of the molded product.

[0004] Existing epoxy resin defoaming treatment devices involve pouring epoxy resin and defoamer into a reaction vessel, then rotating a stirring rod to agitate the epoxy resin and defoamer, thus defoaming the epoxy resin. However, because the stirring rod cannot move up and down, the agitation range is limited when agitating the epoxy resin and defoamer, which may prevent the water-based resin and defoamer from being fully mixed. Furthermore, the stirring efficiency of the stirring rod is low, affecting the defoaming treatment efficiency of the water-based resin. Utility Model Content

[0005] This invention provides an epoxy resin injection system for composite material molding, aiming to solve the problems mentioned in the background art, such as the inability of the stirring rod to move up and down, the limited stirring range when stirring epoxy resin and defoamer, the inability to fully mix water-based resin and defoamer, and the low stirring efficiency of the stirring rod affecting the defoaming efficiency of water-based resin.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite material molding epoxy resin injection system, comprising a reaction vessel, an intermittent adjustment mechanism fixedly installed on the top of the reaction vessel, and a bubble-absorbing assembly movably installed inside the reaction vessel; the intermittent adjustment mechanism includes a bracket fixedly installed on the top of the reaction vessel, a first motor fixedly installed on one side of the bracket, a disc fixedly installed on the output shaft of the first motor, a convex shaft fixedly connected to the surface of the disc, a movable plate movably sleeved on the outside of the convex shaft, and a component formed in the movable plate. The reactor includes an arc-shaped groove on its surface that is adapted to the convex shaft, and a stirring device fixedly connected to the bottom of the movable plate; the bubble-absorbing assembly includes a plurality of movable grooves evenly opened circumferentially on the upper inner side of the reactor, a floating ring slidably connected to the inner wall of the movable groove, a light spring fixedly connected between the bottom inner side of the movable groove and the floating ring, a bubble-absorbing plate slidably connected to the floating ring and having a cavity inside, a bubble-absorbing port fixedly installed at the bottom of the bubble-absorbing plate, a gas guide pipe fixedly connected to one side of the top of the bubble-absorbing plate, and a bubble-absorbing machine fixedly installed on the upper side of the stirring device and whose output end is connected to the gas guide pipe.

[0007] In operation, the first motor drives the disc to rotate, and the rotational motion is converted into the horizontal reciprocating motion of the moving plate through the cooperation of the convex shaft and the arc-shaped groove. The stirring device moves periodically with the moving plate to achieve intermittent stirring of the resin, avoiding local overheating or premature curing caused by continuous stirring. Epoxy resin curing depends on the cross-linking reaction; intermittent stirring can extend the pot life and ensure resin fluidity. The bubble-absorbing plate is suspended on the resin surface by a floating ring and a light spring, and the bubble-absorbing port adaptively adjusts its position according to the liquid level. The bubble-absorbing machine extracts bubbles through the air guide tube, and the linkage between the convex strip of the stirring shaft and the sliding sleeve enhances the bubble detachment efficiency. The guide rod and slider ensure the smooth movement of the moving plate; the T-shaped slider and T-shaped groove cooperate to make the bubble-absorbing plate rotate synchronously during stirring, increasing the bubble capture range.

[0008] Preferably, the stirring device includes a second motor fixedly installed at the bottom of the movable plate, a stirring shaft fixedly installed at the output shaft of the second motor, and a stirring paddle fixedly installed at the lower end of the stirring shaft.

[0009] Preferably, guide rods are fixedly installed on both sides of the top of the reactor, and support rods are fixedly connected to both sides of the movable plate. A slider that is slidably connected to the guide rod is fixedly installed at the end of the support rod.

[0010] Preferably, two symmetrically distributed protrusions are fixedly provided on the upper surface of the stirring shaft, and a sliding sleeve that is slidably connected to the protrusions is fixedly connected to the center of the bubble-absorbing plate.

[0011] Preferably, a T-shaped slider is fixedly installed on the top edge of the bubble-absorbing plate, and a T-shaped groove adapted to the T-shaped slider is opened at the bottom of the floating ring.

[0012] Preferably, the bottom of the reactor is provided with a discharge port, and a discharge valve is fixedly provided on one side of the discharge port.

[0013] This epoxy resin injection system for composite material molding features a simple structure and ease of use. Intermittent stirring prevents localized overheating, maintaining the resin at a low viscosity to facilitate filling fiber gaps. A dual-motor design (first and second motors) decouples motion and stirring, allowing for precise control of reaction conditions. An adaptive bubble suction port, closely attached to the liquid surface and combined with negative pressure suction, significantly reduces microbubble residue, improving the composite material's density and anti-aging properties. A floating ring and lightweight spring buffer mechanical vibrations, preventing disturbance to the cured resin layer and ensuring the integrity of the three-dimensional cross-linked structure. This system, through a combination of mechanical dynamic control and chemical curing characteristics, solves problems such as uneven mixing and bubble residue in traditional epoxy resin injection, significantly improving composite material molding efficiency and product performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front structure of an epoxy resin injection system for composite material molding.

[0015] Figure 2 This is a schematic cross-sectional view of an epoxy resin injection system for composite material molding.

[0016] Figure 3 This is a schematic diagram of the rear structure of an epoxy resin injection system for composite material molding.

[0017] In the picture:

[0018] 1. Reactor;

[0019] 2. Intermittent adjustment mechanism; 21. Support frame; 22. First motor; 23. Disc; 24. Protruding shaft; 25. Moving plate; 26. Arc groove; 27. Stirring device; 271. Second motor; 272. Stirring shaft; 273. Stirring paddle;

[0020] 3. Bubble suction assembly; 31. Movable groove; 32. Floating ring; 33. Lightweight spring; 34. Bubble suction plate; 341. Sliding sleeve; 342. T-shaped slider; 35. Bubble suction port; 36. Air guide tube; 37. Bubble suction machine;

[0021] 4. Guide rod;

[0022] 5. Support rod;

[0023] 6. Guide sleeve;

[0024] 7. Convex strips;

[0025] 8. Discharge port; 81. Discharge valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This embodiment provides an epoxy resin injection system for composite material molding, such as... Figures 1 to 3 As shown, the epoxy resin injection system for composite material molding includes a reactor 1, an intermittent adjustment mechanism 2 fixedly installed on the top of the reactor 1, and a bubble-absorbing assembly 3 movably installed inside the reactor 1. The intermittent adjustment mechanism 2 includes a bracket 21 fixedly installed on the top of the reactor 1, a first motor 22 fixedly installed on one side of the bracket 21, a disc 23 fixedly installed on the output shaft of the first motor 22, a convex shaft 24 fixedly connected to the surface of the disc 23, a movable plate 25 movably sleeved on the outside of the convex shaft 24, an arc-shaped groove 26 formed on the surface of the movable plate 25 and adapted to the convex shaft 24, and a fixedly connected... The stirring device 27 is located at the bottom of the movable plate 25; the bubble-absorbing assembly 3 includes a plurality of movable slots 31 evenly opened along the circumferential direction on the upper inner side of the reactor 1, a floating ring 32 slidably connected to the inner wall of the movable slots 31, a light spring 33 fixedly connected between the bottom inner side of the movable slots 31 and the floating ring 32, a bubble-absorbing plate 34 slidably connected to the floating ring 32 and having a cavity inside, a bubble-absorbing port 35 fixedly installed at the bottom of the bubble-absorbing plate 34, a gas guide pipe 36 fixedly connected to one side of the top of the bubble-absorbing plate 34, and a bubble-absorbing machine 37 fixedly installed on one side of the stirring device 27 and whose output end is connected to the gas guide pipe 36.

[0028] In use, the first motor 22 drives the disc 23 to rotate, and the rotational motion is converted into the horizontal reciprocating motion of the moving plate 25 through the cooperation of the convex shaft 24 and the arc-shaped groove 26. The stirring device 27 moves periodically with the moving plate 25 to achieve intermittent stirring of the resin, avoiding local overheating or premature curing caused by continuous stirring. Epoxy resin curing depends on cross-linking reaction, and intermittent stirring can extend the pot life and ensure resin fluidity; while the bubble-absorbing plate 34 is suspended on the resin liquid surface by the floating ring 32 and the light spring 33, and the bubble-absorbing port 35 adaptively adjusts its position according to the liquid level. The bubble-absorbing machine 37 extracts bubbles through the air guide pipe 36, and the linkage between the convex strip 7 of the stirring shaft 272 and the sliding sleeve 341 enhances the bubble detachment efficiency; the guide rod 4 and the guide sleeve 6 ensure the smooth movement of the moving plate 25; the T-shaped slider 342 cooperates with the T-shaped groove to make the bubble-absorbing plate 34 rotate synchronously during stirring, increasing the bubble capture range.

[0029] In one embodiment, the stirring device 27 includes a second motor 271 fixedly installed at the bottom of the movable plate 25, a stirring shaft 272 fixedly installed on the output shaft of the second motor 271, and a stirring paddle 273 fixedly installed at the lower end of the stirring shaft 272.

[0030] In this embodiment, refer to Figure 2 The second motor 271 drives the stirring shaft 272 and the stirring paddle 273 to stir the epoxy resin, thereby improving the uniformity of the resin and reducing the formation of bubbles.

[0031] In one embodiment, guide rods 4 are fixedly installed on both sides of the top of the reactor 1, and support rods 5 are fixedly connected to both sides of the movable plate 25. The end of the support rod 5 is fixedly installed with a guide sleeve 6 that is slidably connected to the guide rod 4.

[0032] In this embodiment, refer to Figure 2 The guide sleeve 6 slides on the guide rod 4, thereby enabling the moving plate 25 to achieve stable reciprocating motion in the vertical direction.

[0033] In one embodiment, two symmetrically distributed protrusions 7 are fixedly provided on the upper surface of the stirring shaft 272, and a sliding sleeve 341 that is slidably connected to the protrusions 7 is fixedly connected to the center of the bubble-absorbing plate 34.

[0034] In this embodiment, refer to Figure 2 The protrusion 7 of the stirring shaft 272 cooperates with the sliding sleeve 341, so that the bubble-absorbing plate 34 moves synchronously with the stirring shaft 272, thereby enhancing the defoaming efficiency.

[0035] In one embodiment, a T-shaped slider 342 is fixedly installed on the top edge of the bubble-absorbing plate 34, and a T-shaped groove adapted to the T-shaped slider 342 is provided at the bottom of the floating ring 32.

[0036] In this embodiment, refer to Figure 2 The T-shaped slider 342 slides within the T-shaped groove, allowing the bubble-absorbing plate 34 to scrape away air bubbles from the surface of the epoxy resin.

[0037] In one embodiment, the bottom of the reactor 1 is provided with a discharge port 8, and a discharge valve 81 is fixedly provided on one side of the discharge port 8.

[0038] In this embodiment, refer to Figure 2 The discharge port 8 is used for material discharge, and the discharge valve 81 controls the precise discharge of material to reduce waste.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite material molding injection epoxy resin system, comprising a reaction vessel (1), an intermittent adjustment mechanism (2) fixedly installed on the top of the reaction vessel (1), and a bubble absorption assembly (3) movably installed inside the reaction vessel (1). Its features are: The intermittent adjustment mechanism (2) includes a bracket (21) fixedly installed on the top of the reactor (1), a first motor (22) fixedly installed on one side of the bracket (21), a disc (23) fixedly installed on the output shaft of the first motor (22), a convex shaft (24) fixedly connected to the surface of the disc (23), a movable plate (25) movably sleeved on the outside of the convex shaft (24), an arc groove (26) opened on the surface of the movable plate (25) and adapted to the convex shaft (24), and a stirring device (27) fixedly connected to the bottom of the movable plate (25). The bubble-absorbing assembly (3) includes multiple movable slots (31) evenly distributed circumferentially on the upper inner side of the reactor (1), a floating ring (32) slidably connected to the inner wall of the movable slot (31), a lightweight spring (33) fixedly connected between the bottom inner side of the movable slot (31) and the floating ring (32), a bubble-absorbing plate (34) slidably connected to the floating ring (32) and having a cavity inside, a bubble-absorbing port (35) fixedly installed at the bottom of the bubble-absorbing plate (34), a gas guide pipe (36) fixedly connected to one side of the top of the bubble-absorbing plate (34), and a bubble-absorbing machine (37) fixedly installed on one side of the stirring device (27) and whose output end is connected to the gas guide pipe (36).

2. The epoxy resin injection system for composite material molding according to claim 1, characterized in that: The stirring device (27) includes a second motor (271) fixedly installed at the bottom of the moving plate (25), a stirring shaft (272) fixedly installed on the output shaft of the second motor (271), and a stirring paddle (273) fixedly installed at the lower end of the stirring shaft (272).

3. The epoxy resin injection system for composite material molding according to claim 1, characterized in that: Guide rods (4) are fixedly installed on both sides of the top of the reactor (1), and support rods (5) are fixedly connected to both sides of the moving plate (25). A guide sleeve (6) that is slidably connected to the guide rod (4) is fixedly installed at the end of the support rod (5).

4. The epoxy resin injection system for composite material molding according to claim 2, characterized in that: Two symmetrically distributed protrusions (7) are fixedly provided on the upper surface of the stirring shaft (272), and a sliding sleeve (341) that is slidably connected to the protrusions (7) is fixedly connected to the center of the bubble-absorbing plate (34).

5. The epoxy resin injection system for composite material molding according to claim 1, characterized in that: The top edge of the bubble-absorbing plate (34) is fixedly installed with a T-shaped slider (342), and the bottom of the floating ring (32) is provided with a T-shaped groove that matches the T-shaped slider (342).

6. The epoxy resin injection system for composite material molding according to claim 1, characterized in that: The bottom of the reactor (1) is provided with a discharge port (8), and a discharge valve (81) is fixedly provided on one side of the discharge port (8).

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