A mixing device for glue

Abstract

The application relates to the technical field of glue, in particular to a glue mixing device. The mixing device comprises a mixing barrel and a stirring structure capable of ascending and descending in the mixing barrel, the bottom of the mixing barrel is provided with a rotary driving element, the stirring structure comprises a top cover, an upper fixed column, a lower movable column, a first connecting rod and a second connecting rod, the upper fixed column is connected with the top cover, a swivel ring is arranged on the upper fixed column, one end of the first connecting rod is rotationally connected with the swivel ring, one end of the second connecting rod is rotationally connected with the other end of the second connecting rod, the other end of the second connecting rod is rotationally connected with the lower movable column, and the lower movable column is movably connected with the rotary driving element. When mixing, the rotary driving element is started to rotate, so that the lower movable column drives the first connecting rod and the second connecting rod to rotate. The application is provided with a double-component special mixing device, and the feeding is mixed from the inside during the mixing of two substances, so that the feeding is realized without stopping during the glue production process.

Description

Technical Field

[0001] This invention relates to the field of adhesive technology, and in particular to an adhesive processing technology and its application method in housing preparation. Background Technology

[0002] Using glue to bond the components together with a vacuum process is a common method for manufacturing composite material shells for drones. However, the strength of the glue used in the current bonding process is low, resulting in poor impact resistance of the shell. In addition, the glue used in bonding often has a high concentration, which is not conducive to vacuuming after sealing the mold. This leads to a thicker shell wall and excessive weight, which not only increases the weight of the shell but also increases the manufacturing cost. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a glue mixing device that has the advantages of more uniform stirring, more suitable for mixing two-component glues, less air bubbles, and high mixing efficiency.

[0004] This invention discloses a glue mixing device, including a mixing tank and a stirring structure that can be raised and lowered within the mixing tank. The bottom of the mixing tank is provided with a rotary drive. The stirring structure includes a top cover, an upper fixed column, a lower movable column, a first connecting rod, and a second connecting rod. The upper fixed column is connected to the top cover and has a rotating ring. One end of several first connecting rods is rotatably connected to the rotating ring, and one end of the second connecting rod is rotatably connected to the other end of the second connecting rod. The other end of the second connecting rod is rotatably connected to the lower movable column. The lower movable column is movably connected to the rotary drive. During mixing, the rotary drive is activated to cause the lower movable column to drive the first and second connecting rods to rotate.

[0005] Furthermore, the upper fixing column passes through the top cover, and the upper fixing column is provided with an injection chamber. The side wall of the injection chamber is connected to an external feed pipe. The bottom of the injection chamber is coaxially embedded with a lifting rod, and the side wall of the lifting rod is provided with a discharge port. The top of the injection chamber is coaxially provided with a squeezing rod, and the squeezing rod is connected to a telescopic motor to control its movable insertion into the lifting rod.

[0006] Furthermore, the bottom of the lower movable column is provided with a fixing groove, and the rotary drive component is provided with a protective cover and a limiting post. The limiting post corresponds to the fixing groove, and the protective cover is provided with an opening through which the limiting post can pass. A spring is provided inside the protective cover, and the lower movable column squeezes the protective cover to make the limiting post embed into the fixing groove.

[0007] Furthermore, the mixing device is used to mix an adhesive comprising a fusion adhesive and a curing agent in a ratio of 10:3; wherein the fusion adhesive comprises bisphenol F epoxy resin and alicyclic epoxy resin in a ratio of (9-11):(2-4).

[0008] Furthermore, the weight ratio of bisphenol F epoxy resin to alicyclic epoxy resin is 10:3, wherein the bisphenol F epoxy resin is Agulor GY285 and the alicyclic epoxy resin is Huntsman CY179.

[0009] Furthermore, the curing agent is an amino curing agent.

[0010] By adopting the above technical solution, the beneficial effects of the present invention are:

[0011] 1. This invention utilizes a dedicated mixing device for two components, allowing for non-stop feeding during the adhesive mixing process by feeding the two substances from within the device. The variable-radius first and second connecting rods allow for adjustment of the mixing speed and range, significantly reducing air bubble formation while ensuring more uniform mixing. A movable lifting rod, in conjunction with an extrusion rod, seals the feed inlet and prevents backflow of adhesive into the feed chamber during accelerated mixing. By improving the adhesive formula, the viscosity of the resulting adhesive is reduced, greatly enhancing the vacuum effect after mold sealing; furthermore, the adhesive strength is maintained, improving the impact resistance of the casing.

[0012] 2. By setting up cross-arranged carbon fiber cloth, the weight of the manufactured casing is reduced, and the thickness of the resulting casing wall is thin, which greatly reduces its manufacturing cost.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0014] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0015] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the mixing device in this invention;

[0020] Figure 2 This is an internal structural diagram of the mixing device before assembly in this invention;

[0021] Figure 3 This is an internal structural diagram of the mixing device in its first usage state in this invention;

[0022] Figure 4 This is an internal structural diagram of the mixing device in its second usage state in this invention;

[0023] Figure 5 This is an internal structural diagram of the mixing device in its third usage state in this invention;

[0024] Figure 6 This is a partial structural cross-sectional view of the mixing device in this invention.

[0025] Explanation of key figure labels:

[0026] 1- Mixing tank;

[0027] 2-Stirring structure;

[0028] 21-Top cover;

[0029] 22-Upper fixed column;

[0030] 221 - Injection cavity;

[0031] 222-Lifting boom;

[0032] 223 - Discharge port;

[0033] 224 - Feed pipe;

[0034] 225-Extrusion Rod

[0035] 23-Lower movable column;

[0036] 24 - First connecting rod;

[0037] 25 - Second connecting rod;

[0038] 26 - Vacuum tube;

[0039] 3-Rotary drive component;

[0040] 31-Protective cover;

[0041] 32-Limiting post. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] In a first aspect, the present invention provides a processing technology for adhesives, specifically including the following steps:

[0044] S1: Bisphenol F epoxy resin and alicyclic epoxy resin are added to a mixing device in a ratio of (9-11):(2-4) to obtain a fused adhesive.

[0045] S2: Add a curing agent to a mixing device containing the fusion adhesive and mix to obtain the adhesive.

[0046] The ratio of the fusion adhesive to the curing agent is 10:3.

[0047] Specifically, the weight ratio of bisphenol F epoxy resin to alicyclic epoxy resin is 10:3. Preferably, the bisphenol F epoxy resin is Agol GY285, and the alicyclic epoxy resin is preferably Huntsman CY179. The curing agent is an amino curing agent, such as dimethylaminopropylamine.

[0048] Secondly, referring to Figure 1-6 To achieve a more uniform mixing of the adhesive and curing agent, this invention provides an adhesive mixing device comprising a mixing tank 1 and a stirring structure 2 that can be raised and lowered within the mixing tank 1. The raising and lowering of the stirring structure 2 can be achieved by connecting it to an external control lifting cylinder. A rotary drive 3 is provided at the bottom of the mixing tank 1, and the rotary drive 3 is detachably connected to the stirring structure 2. The connection method is as follows: a fixing groove is provided at the bottom of the stirring structure 2 to engage with the rotary drive 3. To protect the engaging part of the rotary drive 3, a protective cover 31 and a limiting post 32 are provided at the top of the rotary drive 3. The protective cover 31 has an opening through which the limiting post 32 can pass, and a spring is provided inside the protective cover 31. The limiting post 32 corresponds to the fixing groove, and the stirring structure 2 compresses the protective cover 31 to cause the limiting post 32 to embed into the fixing groove.

[0049] The stirring structure 2 includes a top cover 21, an upper fixed column 22, a lower movable column 23, a first connecting rod 24, and a second connecting rod 25. The upper fixed column 22 is connected to the top cover 21 and has a rotating ring. One end of each of the first connecting rods 24 is rotatably connected to the rotating ring, and one end of each of the second connecting rods 25 is rotatably connected to the other end of the second connecting rod 25. The other end of each second connecting rod 25 is rotatably connected to the lower movable column 23. The stirring structure 2 is movably connected to the rotary drive 3 via the lower movable column 23, i.e., a fixing groove is located below the lower movable column 23. During mixing, the rotary drive 3 is activated, causing the lower movable column 23 to drive the first connecting rods 24 and the second connecting rods 25 to rotate. Simultaneously, the top cover 21 is raised and lowered according to the change in rotation speed, causing the angle between the first connecting rods 24 and the second connecting rods 25 to change, expanding the stirring range and squeezing out the internal glue, allowing air bubbles to be quickly expelled. If necessary, in order to increase the expulsion of air bubbles in the glue, a vacuum tube 26 is connected to the top cover 21. The vacuum tube 26 is connected to an external air compressor, and the operation of the air compressor is alternated with the downward extrusion of the top cover 21.

[0050] To achieve non-stop feeding, the upper fixed column 22 passes through the top cover 21, and an injection chamber 221 is set inside the upper fixed column 22. An external feeding pipe 224 is connected to the side wall of the injection chamber 221. A lifting rod 222 is coaxially embedded at the bottom of the injection chamber 221, and an outlet 223 is provided on the side wall of the lifting rod 222. A pressing rod 225 is coaxially mounted at the top of the injection chamber 221. The pressing rod 225 is connected to a telescopic motor to control its movable insertion into the lifting rod 222. After feeding is completed, refer to... Figure 5 While controlling the top cover 21 to move downwards, causing the lifting rod 222 to gradually retract into the upper fixed column 22 under the support of the rotary drive 3, the extrusion rod is activated to descend, causing the material residue inside the lifting rod 222 to be squeezed out until the discharge port 223 is completely contained within the fixed column. This allows the rotary drive 3 to reach its maximum speed, accelerating the mixing speed. Simultaneously, to improve the transmission effect of the lower movable column 23, a cross groove is provided at the top of the lower movable column 23, and a corresponding cross protrusion is provided at the bottom of the lifting rod 222. To reduce the rotational resistance of the stirring structure 2, multiple holes are provided on the side wall of the first connecting rod 24. If necessary, an auxiliary slurry is provided on the side wall of the lower movable column 23, with the auxiliary slurry alternating with the second connecting rod 25.

[0051] During operation, the fusion adhesive material can be directly added into the mixing tank 1. Then, the stirring structure 2 is lowered to engage with the rotary drive 3. The rotary drive 3 is started to drive the first connecting rod 24 and the second connecting rod 25 to rotate, and the rotation speed is gradually increased. As the speed increases, the top cover 21 is raised and lowered to change the stirring range. After the mixing is complete, the curing agent is added through the feed pipe 224. When the addition is complete, the top cover 21 and the extrusion rod are engaged so that all the curing agent in the lifting rod 222 enters the adhesive. At this time, the rotation speed of the rotary drive 3 reaches its maximum.

[0052] Thirdly, the present invention provides a method for applying adhesive in the preparation of machine housings, wherein the adhesive, based on the above-described processing technology, specifically includes the following steps:

[0053] S1: Select a mold and lay two layers of carbon fiber inside it. The two layers of carbon fiber are laid crosswise at 45° or 90°. Then, apply paste material evenly to the surface of the carbon fiber layers.

[0054] S2: Seal the coated mold and then place it in a 1.3MPa autoclave for 8 hours of vacuum treatment.

[0055] S3: Apply molding compound to the joints of the carbon fiber layers laid on the mold, and then perform molding, curing and demolding in sequence to finally obtain the casing product.

[0056] The paste material is composed of the following components: 50-60 parts glue, 35-45 parts filler and 2-7 parts minor ingredients.

[0057] The adhesive comprises, by weight, 10 parts bisphenol F epoxy resin, 3 parts alicyclic epoxy resin, and 3 parts curing agent.

[0058] The bisphenol F epoxy resin is Aigu Lao GY285.

[0059] The alicyclic epoxy resin is Huntsman CY179.

[0060] The curing agent is dimethylaminopropylamine.

[0061] The filler composition, by weight, includes: 84-87 parts carbon fiber cloth and 14-16 parts nano powder.

[0062] The components of the small material, by weight, include: 48-52 parts hollow glass microspheres and 48-52 parts industrial-grade graphene powder.

[0063] The mold-forming agent consists of 9-11 parts of fusion powder and 2-4 parts of Huntsman CY179, wherein the fusion powder includes nano powder and carbon powder, and the ratio of nano powder to carbon powder is 10:3.

[0064] Test data

[0065] Experimental Method: Based on the casing manufacturing method described above, and following the selection rule of two edge values ​​and one intermediate value, corresponding proportions of materials were selected to prepare the casing, including adhesive, molding compound, and paste material. Casings 1-3 were obtained sequentially based on the selected proportions from smallest to largest. Then, casing 4 was prepared using common GY285 or CY179 adhesive, traditional paste adhesive, and traditional molding compound as a comparative example. Performance tests were conducted on the four casing groups, and the results are shown in Table 1.

[0066] Table 1. Comparison Test Table for Chassis

[0067]

[0068] From the table above, it can be seen that after using the mold-locking agent in housings 1-3, the mold-locking bonding force is 205 kg / cm². 2 220kg / cm 2 190kg / cm 2 The mold-fitting force of the comparative model is 180 kg / cm². 2 As can be seen, compared with the comparative example, the mold clamping force increased by 13.89%, 22.22%, and 5.56%, respectively.

[0069] As shown in the table above, the compressive strengths of the casings made using glue and paste materials in casings 1-3 are 1250 MPa, 1360 MPa, and 1190 MPa, respectively, while the compressive strength of the casing made in the comparative example is 1120 MPa. It can be seen that, compared with the comparative example, the compressive strength of the casings has increased by 11.61%, 21.43%, and 6.25%, respectively.

[0070] As shown in the table above, the tensile strengths of the casings made using glue and paste materials in casings 1-3 are 3660 MPa, 3750 MPa, and 3600 MPa, respectively, while the tensile strength of the casing made in the comparative example is 3520 MPa. It can be seen that, compared with the comparative example, the tensile strength of the casings has increased by 3.98%, 6.53%, and 2.27%, respectively.

[0071] In summary, this invention not only gives the adhesive better bonding properties, but also results in a casing with higher structural strength and lighter weight.

[0072] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0073] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0074] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A mixing device for glue, characterized in that, The mixing device comprises a mixing barrel and a stirring structure that can be lifted in the mixing barrel, the bottom of the mixing barrel is provided with a rotary driving part, the stirring structure comprises a top cover, an upper fixed column, a lower movable column, a first connecting rod and a second connecting rod, the upper fixed column is connected with the top cover, the upper fixed column is provided with a swivel ring, one end of the first connecting rod is rotatably connected with the swivel ring, one end of the second connecting rod is rotatably connected with the other end of the second connecting rod, the other end of the second connecting rod is rotatably connected with the lower movable column, and the lower movable column is movably connected with the rotary driving part; when mixing, the rotary driving part is started to rotate to drive the lower movable column to rotate the first connecting rod and the second connecting rod, and the top cover is controlled to ascend and descend with the change of the rotation speed; the top cover is connected with a vacuumizing pipe, the vacuumizing pipe is connected with an external air compressor, and the working of the air compressor is alternately started with the downward extrusion of the top cover; The upper fixed column passes through the top cover, an injection cavity is arranged in the upper fixed column, a side wall of the injection cavity is connected with an external feeding pipe, a lifting rod is coaxially embedded in the bottom of the injection cavity, a side wall of the lifting rod is provided with a discharge port, an extrusion rod is coaxially arranged at the top of the injection cavity, the extrusion rod is connected with a telescopic motor to movably insert into the lifting rod, a curing agent is poured into the feeding pipe after complete stirring, the top cover is controlled to move downward to gradually shrink the lifting rod into the upper fixed column under the support of the rotary driving part, and the extrusion rod is started to descend to extrude the residual material in the lifting rod until the discharge port is completely received in the fixed column; The bottom of the lower movable column is provided with a fixed groove, the rotary driving part is provided with a protective cover and a limiting column, the limiting column corresponds to the fixed groove, the protective cover is provided with an opening through which the limiting column passes, and the protective cover is provided with a spring; the lower movable column extrudes the protective cover to make the limiting column embedded in the fixed groove.

2. The glue mixing device of claim 1, wherein, The mixing device is used for mixing glue, the glue comprises fusion glue and curing agent, and the proportion of the fusion glue and the curing agent is 10:3; wherein the fusion glue comprises (9-11): (2-4) bisphenol F epoxy resin and alicyclic epoxy resin.

3. The glue mixing device of claim 2, wherein, The weight ratio of the bisphenol F epoxy resin and the alicyclic epoxy resin is 10:3, wherein the bisphenol F epoxy resin is Aiguo GY285, and the alicyclic epoxy resin is Huntsman CY179.

4. The glue mixing device of claim 2, wherein, The curing agent is an amino curing agent.

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