Bubble eliminating device for epoxy resin processing

Abstract

The invention discloses a bubble eliminating device for epoxy resin processing, and relates to the technical field of epoxy resin processing, the bubble eliminating device comprises a mounting shell, a stirring assembly is mounted in the mounting shell, the stirring assembly comprises a first motor, the output end of the first motor is connected with an eccentric shaft, and one end of the eccentric shaft is slidably connected with a sliding groove; one side of the sliding groove is rotationally connected with the inner wall of the mounting shell, and the other side of the sliding groove is fixedly connected with a swing plate. According to the invention, the stirring assembly performs circular motion and revolution around the center of the tank body to stir epoxy resin in a large area, so that the whole resin is in a flowing state, and the rotation enables the stirring assembly to rotate to generate local eddy current and shearing force, so that bubbles in the resin are more easily stripped from a resin matrix; stable distribution of the bubbles in the resin is broken, and the bubbles are promoted to continuously deform, crack and rise.

Description

Technical Field

[0001] The invention relates to the technical field of epoxy resin processing, in particular to a bubble eliminating device for epoxy resin processing. Background Art

[0002] As an important thermosetting resin, epoxy resin has been widely used in many fields. In the field of electronics and electrical, it is widely used in the manufacture of printed circuit boards, electronic packaging materials, etc., providing key support for the miniaturization and high performance of electronic equipment; in the aerospace field, epoxy resin composite materials have become ideal materials for manufacturing aircraft wings, satellite structural parts and other components due to their high strength and light weight; in the construction industry, epoxy resin floor paint, coatings and other products not only have beautiful decorative effects, but also have excellent wear resistance and corrosion resistance, and are widely used in industrial plants, commercial buildings and other places.

[0003] During the processing of epoxy resin, the generation of bubbles is inevitable. Bubbles will form stress concentration points inside the epoxy resin. When the product is subjected to external force, these stress concentration points are likely to cause the generation and expansion of cracks, thereby causing the strength of the product to decrease. In actual applications, failure phenomena such as breakage and delamination are likely to occur.

[0004] In the prior art, one of the commonly used methods for eliminating bubbles is stirring. Most traditional stirring devices can only achieve single-direction rotation stirring, with a single stirring method and limited stirring effect. This single-direction stirring easily causes the epoxy resin to form a fixed flow pattern in the tank body, and the distribution of bubbles in the resin is relatively stable, making it difficult for bubbles to fully escape. Especially for high-viscosity epoxy resins, due to their large internal friction and large resistance to bubble movement, it is more difficult for traditional stirring devices to effectively separate bubbles from the resin.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The object of the present invention is to provide a bubble elimination device for epoxy resin processing to solve the problems raised in the above-mentioned background technology.

[0007] To solve the above technical problems, a bubble elimination device for epoxy resin processing provided by the present invention includes an installation housing. Inside the installation housing, a stirring assembly is installed. The stirring assembly includes a first motor. The output end of the first motor is connected to an eccentric shaft. One end of the eccentric shaft is slidably connected to a chute. One side of the chute is rotatably connected to the inner wall of the installation housing. The other side of the chute is fixedly connected to a swing plate. On one outer wall of the swing plate, a straight-edge cylindrical gear is meshed. In the middle of the straight-edge cylindrical gear, a fixed rod is rotatably connected. On one outer wall of the straight-edge cylindrical gear, a rotating sleeve is fixedly connected. On the outer wall of the fixed rod, two first bevel gears are fixedly connected. On one side of the top of each of the two first bevel gears, two second bevel gears are rotatably connected. At each end of each second bevel gear away from the other, a rotating stirring blade is fixedly connected. Each rotating stirring blade is rotatably connected to the rotating sleeve.

[0008] Further, an air extraction assembly is also installed on the inner wall of the installation housing. The air extraction assembly includes a second motor fixedly connected to the inner wall of the installation housing. The output end of the second motor is connected to a turntable. On the outer wall of the turntable away from the second motor, a first connecting rod is rotatably connected. One end of the first connecting rod is rotatably connected to a pressing rod. One end of the pressing rod away from the second motor is rotatably connected to a second connecting rod. One end of the second connecting rod away from the pressing rod is rotatably connected to a piston. Inside the pressing rod, a guiding slide rail is provided. Inside the guiding slide rail, a first sliding block is slidably connected. On one side of the first sliding block, a second sliding block is rotatably connected. At the bottom end of the second sliding block, a lead screw is threadedly connected. The outer wall of the lead screw is rotatably connected to a fixed bracket. On the outer wall of the pressing rod near the first connecting rod and away from the first connecting rod, a third connecting rod is rotatably connected. One end of the third connecting rod is rotatably connected to the fixed bracket.

[0009] Further, an installation sleeve is slidably connected to the outer wall of the piston. On both sides of the installation sleeve, gas pipelines are connected. On one outer wall of the installation housing, a control panel is installed.

[0010] Further, a tank body is rotatably connected to the outer wall of the rotating sleeve. On the outer wall of the tank body, two fluid pipelines are connected. One of the fluid pipelines is located on one side of the tank body near the top. The other fluid pipeline is connected to the middle of the bottom end of the tank body. On the inner walls of both ends of the two fluid pipelines close to the tank body, valves are connected.

[0011] Further, one end of the fixed rod is fixedly connected to the inner wall of the installation housing. Both of the two first bevel gears are fixedly connected to the outer wall of the fixed rod.

[0012] Further, one of the gas pipelines is communicated with one side of the top of the tank body, and the other gas pipeline is communicated with the installation sleeve.

[0013] Further, the outer wall of the first motor is fixedly connected to the inner wall of the installation housing. The shape of the swing plate is fan-shaped, and multiple teeth are provided on the outer wall of the fan-shaped arc surface of the swing plate.

[0014] Furthermore, the elimination process of the bubble elimination device is as follows:

[0015] When the rotating sleeve rotates, because each first bevel gear forms a meshing relationship with the two second bevel gears, the revolution motion driven by the rotating sleeve is converted into the rotation motion of the second bevel gears, so that the rotating stirring blade rotates, thereby stirring the epoxy resin in the tank.

[0016] Furthermore, the revolution can stir the epoxy resin over a large area, making the resin as a whole in a flowing state, while the rotation allows the rotating stirring blades to rotate themselves, generating local eddy currents and shear forces.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Use the stirring component to make circular motion around the center of the tank. The revolution can stir the epoxy resin over a large area, making the resin flow as a whole. The rotation makes the stirring component rotate itself, generating local eddy currents and shear forces, making it easier for the bubbles inside the resin to be peeled off from the resin matrix, breaking the stable distribution of the bubbles in the resin and causing the bubbles to continuously deform, rupture and rise.

[0019] 2. The vacuum component can change the changing pattern and intensity of the negative pressure in the tank during vacuuming. In the raw material mixing stage, the piston stroke can be shortened to remove most of the air in the raw materials at a lower vacuum speed and pressure to avoid splashing of raw materials due to excessive negative pressure. In the reaction process, as the resin viscosity changes and bubbles are generated, the stroke is adjusted in real time to maintain a suitable vacuum degree, promote the reaction and bubble discharge. In the final molding stage, the stroke is extended to increase the vacuum degree to ensure that there are no bubbles remaining inside the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a bubble elimination device for epoxy resin processing;

[0021] Figure 2 A schematic diagram of the internal structure of a bubble elimination device for epoxy resin processing;

[0022] Figure 3 It is a schematic diagram of the overall structure of a stirring component in a bubble elimination device for epoxy resin processing;

[0023] Figure 4 A schematic diagram of the meshing connection of bevel gears in a bubble elimination device for epoxy resin processing;

[0024] Figure 5 It is a structural schematic diagram of a reciprocating swing component in a bubble elimination device for epoxy resin processing;

[0025] Figure 6Schematic structural diagram of an air extraction component in a bubble elimination device for epoxy resin processing;

[0026] Figure 7 Front structural diagram of an air extraction component in a bubble elimination device for epoxy resin processing;

[0027] Figure 8 Schematic structural diagram of a movable block in a bubble elimination device for epoxy resin processing.

[0028] In the figure: 1, mounting shell; 2, tank body; 3, first motor; 4, eccentric shaft; 5, chute; 6, swing plate; 7, straight ruler cylindrical gear; 8, fixed rod; 9, rotating sleeve; 10, first bevel gear; 11, second bevel gear; 12, rotating stirring blade; 13, second motor; 14, turntable; 15, first connecting rod; 16, pressing rod; 17, second connecting rod; 18, piston; 19, third connecting rod; 20, fixed bracket; 21, first sliding block; 22, second sliding block; 23, lead screw; 24, mounting sleeve; 25, gas pipeline; 26, fluid pipeline; 27, control panel. Specific implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 - 8The present invention provides a technical solution: a bubble elimination device for epoxy resin processing, comprising a mounting shell 1, a stirring assembly installed inside the mounting shell 1, the stirring assembly comprising a first motor 3, an output end of the first motor 3 is connected to an eccentric shaft 4, the first motor 3 is fixed to the inner wall of the mounting shell 1, the output end drives the eccentric shaft 4 to do circular motion, one end of the eccentric shaft 4 is slidably connected to a slide groove 5, one side of the slide groove 5 is rotationally connected to the inner wall of the mounting shell 1, one end of the eccentric shaft 4 slides in the slide groove 5, because one side of the slide groove 5 is rotationally connected to the inner wall of the mounting shell 1, under the action of the eccentric shaft 4, the slide groove 5 will do reciprocating swinging motion, the other side of the slide groove 5 is fixedly connected to a swing plate 6, the swing plate 6 is fan-shaped, and the outer wall of the fan-shaped arc surface is provided with a plurality of teeth, as the slide groove 5 swings, the swing plate 6 swings synchronously, the outer wall of one side of the swing plate 6 is meshed and connected with a ruler cylindrical gear 7, the swing of the swing plate 6 drives the ruler cylindrical gear 7 to rotate alternately forward and reverse through the meshing of teeth, so as to realize the transmission of power and the change of direction, the middle part of the ruler cylindrical gear 7 is rotatably connected with a fixed rod 8, one end of the fixed rod 8 is fixedly connected to the inner wall of the mounting shell 1, the ruler cylindrical gear 7 can rotate around the fixed rod 8, when the ruler cylindrical gear 7 is subjected to external force, it will rotate alternately forward and reverse with the fixed rod 8 as the axis, the outer wall of one side of the ruler cylindrical gear 7 is fixedly connected with a rotating sleeve 9, the rotating sleeve 9 will rotate synchronously with the rotation of the ruler cylindrical gear 7, the outer wall of the fixed rod 8 is fixedly connected with two first bevel gears 10,

[0031] The position of the first bevel gears 10 on the fixed rod 8 is fixed, and they will not move around the fixed rod 8 with the rotation of the ruler cylindrical gear 7. The top side of the two first bevel gears 10 is rotatably connected to two second bevel gears 11, and the end away from each second bevel gear 11 is fixedly connected to a rotating stirring blade 12, and each rotating stirring blade 12 is rotatably connected to the rotating sleeve 9. When the ruler cylindrical gear 7 drives the rotating sleeve 9 to rotate, because each first bevel gear 10 forms a meshing relationship with the two second bevel gears 11, the orbital motion driven by the rotating sleeve 9 is converted into the rotational motion of the second bevel gear 11.

[0032] See also Figure 2 , Figure 6 , Figure 7 , Figure 8, an air extraction component is also installed on the inner wall of the installation housing 1. The air extraction component includes a second motor 13 fixedly connected to the inner wall of the installation housing 1. The second motor 13 is fixed to the inner wall of the installation housing 1 and continuously rotates as a power source. The output end of the second motor 13 is connected to a turntable 14. One side outer wall of the turntable 14 away from the second motor 13 is rotatably connected to a first connecting rod 15. One end of the first connecting rod 15 is rotatably connected to a pressure rod 16. The first connecting rod 15 converts the circular motion of the turntable 14 into the reciprocating swing of one end of the pressure rod 16, realizing the preliminary conversion of the motion. One end of the pressure rod 16 away from the second motor 13 is rotatably connected to a second connecting rod 17. One end of the second connecting rod 17 away from the pressure rod 16 is rotatably connected to a piston 18.

[0033] The second connecting rod 17 converts the reciprocating motion of the pressure rod 16 into the reciprocating linear motion of the piston 18, realizing the air extraction and exhaust actions of the piston 18 in the cylinder. A guiding slide rail is provided on the inner wall of the pressure rod 16. A first sliding block 21 is slidably connected to the inner wall of the guiding slide rail. One side of the first sliding block 21 is rotatably connected to a second sliding block 22. The bottom end of the second sliding block 22 is threadedly connected to a lead screw 23. The outer wall of the lead screw 23 is rotatably connected to a fixed bracket 20. The lead screw 23 adjusts the position of the second sliding block 22 by rotation. The first sliding block 21 slides in the guiding slide rail on the inner wall of the pressure rod 16 and cooperates with the second sliding block 22 to realize the adjustment of the motion amplitude of the pressure rod 16. One end of the pressure rod 16 close to the first connecting rod 15 and on the outer wall away from the first connecting rod 15 is rotatably connected to a third connecting rod 19. One end of the third connecting rod 19 is rotatably connected to the fixed bracket 20. The third connecting rod 19 is rotatably connected to the fixed bracket 20 and the pressure rod 16, restricting the motion trajectory of the pressure rod 16 and ensuring that the pressure rod 16 can make a reciprocating swing.

[0034] Refer to Figure 6 , an installation sleeve 24 is slidably connected to the outer wall of the piston 18. The piston 18 makes a reciprocating linear motion inside the installation sleeve 24, changing the volume inside the installation sleeve 24 through the reciprocating motion, thereby realizing the air extraction and exhaust actions. Gas pipes 25 are connected to both sides of the installation sleeve 24. One side is for the gas to enter during air extraction, and the other side is for the gas to be discharged during exhaust. At the same time, valves are connected to the inner walls of both gas pipes 25. A control panel 27 is installed on one side outer wall of the installation housing 1.

[0035] Refer to Figure 1 、 Figure 2, the outer wall of the rotating sleeve 9 is rotatably connected to the tank body 2. Two fluid pipes 26 are connected to the outer wall of the tank body 2. One of the fluid pipes 26 is located on the side of the tank body 2 near the top, and the other fluid pipe 26 is connected to the middle of the bottom end of the tank body 2. Valves are connected to the inner walls of the two fluid pipes 26 near the tank body 2. The two fluid pipes 26 respectively undertake the functions of fluid input and output. The reasonable arrangement of the fluid pipes 26 can ensure the smooth flow of the fluid inside and outside the tank body 2 and improve the processing efficiency of the component.

[0036] Working principle: When the first motor 3 starts, the output end drives the eccentric shaft 4 to rotate. The rotation of the eccentric shaft 4 causes the chute 5 to swing reciprocally, and then drives the swing plate 6 to swing in a fan shape. The swing of the swing plate 6 drives the straight-edge cylindrical gear 7 to rotate forward and backward alternately around the fixed rod 8, and the rotating sleeve 9 also rotates forward and backward alternately. When the rotating sleeve 9 rotates, because each first bevel gear 10 meshes with two second bevel gears 11, the revolution movement driven by the rotating sleeve 9 is converted into the rotation movement of the second bevel gear 11, causing the rotating stirring blade 12 to rotate, so as to stir the epoxy resin in the tank body 2. The revolution can stir the epoxy resin over a large area, making the resin as a whole in a flowing state, and the rotation makes the rotating stirring blade 12 rotate itself, generating local eddy currents and shear forces, making the bubbles inside the resin easier to peel off from the resin matrix.

[0037] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An air bubble elimination device for epoxy resin processing, comprising a mounting housing (1), characterized in that: Inside the installation housing (1), a stirring assembly is installed. The stirring assembly includes a first motor (3). The output end of the first motor (3) is connected to an eccentric shaft (4). One end of the eccentric shaft (4) is slidably connected to a chute (5). One side of the chute (5) is rotatably connected to the inner wall of the installation housing (1). The other side of the chute (5) is fixedly connected to a swing plate (6). One side outer wall of the swing plate (6) is meshed with a straight-edge cylindrical gear (7). The middle of the straight-edge cylindrical gear (7) is rotatably connected to a fixed rod (8). One side outer wall of the straight-edge cylindrical gear (7) is fixedly connected to a rotating sleeve (9). Two first bevel gears (10) are fixedly connected to the outer wall of the fixed rod (8). One side of the top of each of the two first bevel gears (10) is rotatably connected to two second bevel gears (11). Each end of the second bevel gears (11) away from each other is fixedly connected to a rotating stirring blade (12). Each rotating stirring blade (12) is rotatably connected to the rotating sleeve (9).

2. The bubble elimination device for epoxy resin processing according to claim 1, characterized in that: An air extraction assembly is also installed on the inner wall of the installation housing (1). The air extraction assembly includes a second motor (13) fixedly connected to the inner wall of the installation housing (1). The output end of the second motor (13) is connected to a turntable (14). One side outer wall of the turntable (14) away from the second motor (13) is rotatably connected to a first connecting rod (15). One end of the first connecting rod (15) is rotatably connected to a pressing rod (16). One end of the pressing rod (16) away from the second motor (13) is rotatably connected to a second connecting rod (17). One end of the second connecting rod (17) away from the pressing rod (16) is rotatably connected to a piston (18). A guiding slide rail is provided inside the pressing rod (16). A first sliding block (21) is slidably connected to the inner wall of the guiding slide rail. One side of the first sliding block (21) is rotatably connected to a second sliding block (22). The bottom end of the second sliding block (22) is threadedly connected to a lead screw (23). The outer wall of the lead screw (23) is rotatably connected to a fixed bracket (20). One end of the pressing rod (16) near the first connecting rod (15) and on the side away from the first connecting rod (15) is rotatably connected to a third connecting rod (19). One end of the third connecting rod (19) is rotatably connected to the fixed bracket (20).

3. An air bubble elimination device for epoxy resin processing according to claim 2, characterized in that: The outer wall of the piston (18) is slidably connected to an installation sleeve (24). Gas pipes (25) are connected to both sides of the installation sleeve (24). A control panel (27) is installed on one side outer wall of the installation housing (1).

4. The bubble elimination device for epoxy resin processing according to claim 3, characterized in that: The outer wall of the rotating sleeve (9) is rotatably connected to a tank body (2). Two fluid pipes (26) are connected to the outer wall of the tank body (2).

5. The bubble elimination device for epoxy resin processing according to claim 4, characterized in that: One of the fluid pipes (26) is located on the side of the tank body (2) near the top. The other fluid pipe (26) is connected to the middle of the bottom end of the tank body (2). Valves are connected to the inner walls of both ends of the two fluid pipes (26) near the tank body (2).

6. The bubble elimination device for epoxy resin processing according to claim 5, characterized in that: One of the gas pipelines (25) is communicated with one side of the top end of the tank body (2), and the other gas pipeline (25) is communicated with the installation sleeve (24).

7. An air bubble eliminating device for epoxy resin processing according to claim 6, characterized in that: The outer wall of the first motor (3) is fixedly connected with the inner wall of the installation housing (1). The swing plate (6) is in a fan shape, and a plurality of teeth are arranged on the outer wall of the fan-shaped arc surface of the swing plate (6).

8. The bubble elimination device for epoxy resin processing according to claim 7, characterized in that: One end of the fixed rod (8) is fixedly connected with the inner wall of the installation housing (1), and the two first bevel gears (10) are both fixedly connected with the outer wall of the fixed rod (8).

9. The bubble elimination device for epoxy resin processing according to claim 8, wherein: The elimination process of this bubble elimination device is as follows: When the rotating sleeve (9) rotates, since each first bevel gear (10) meshes with two second bevel gears (11), the revolution motion driven by the rotating sleeve (9) is converted into the rotation motion of the second bevel gear (11), so that the rotating stirring blade (12) rotates, thereby stirring the epoxy resin in the tank body (2).

10. The bubble elimination device for epoxy resin processing according to claim 9, characterized in that: The revolution can stir the epoxy resin over a large area, making the resin in a flowing state as a whole. The rotation makes the rotating stirring blade (12) rotate itself, generating local eddy currents and shear forces.

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