CN116651300A - Preparation device and process of epoxy/BMI composite adhesive silver conductive adhesive - Google Patents
Preparation device and process of epoxy/BMI composite adhesive silver conductive adhesive Download PDFInfo
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- CN116651300A CN116651300A CN202310759215.0A CN202310759215A CN116651300A CN 116651300 A CN116651300 A CN 116651300A CN 202310759215 A CN202310759215 A CN 202310759215A CN 116651300 A CN116651300 A CN 116651300A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 63
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000004593 Epoxy Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 20
- 239000004332 silver Substances 0.000 title claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 238
- 230000007246 mechanism Effects 0.000 claims abstract description 198
- 238000000227 grinding Methods 0.000 claims abstract description 143
- 239000000463 material Substances 0.000 claims abstract description 112
- 238000010008 shearing Methods 0.000 claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims description 51
- 230000005540 biological transmission Effects 0.000 claims description 40
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 230000007723 transport mechanism Effects 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012257 stirred material Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- -1 acrylic ester Chemical class 0.000 claims description 3
- 235000015110 jellies Nutrition 0.000 claims description 3
- 239000008274 jelly Substances 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83611—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
- C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09J179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/36—Mixing of ingredients for adhesives or glues; Mixing adhesives and gas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the field of conductive adhesive preparation, in particular to a preparation device and a preparation process of epoxy/BMI composite adhesive silver conductive adhesive, comprising a base, a stirring mechanism, a conveying mechanism, a grinding mechanism, a feeding mechanism and a control mechanism, wherein the stirring mechanism is rotatably arranged at the top of the base; the stirring mechanism is rotatably provided with a conveying mechanism; the top of the stirring mechanism is fixedly provided with a grinding mechanism which is used for synchronously operating with the stirring mechanism to finely grind the ground materials; the side surface of the stirring mechanism is fixedly provided with a feeding mechanism, and the feeding mechanism is used for adding required materials according to the current required working state and redistributing the materials processed by the grinding mechanism; according to the invention, the material grinding and stirring shearing can be efficiently finished by organically combining the feeding mechanism, the grinding mechanism and the stirring mechanism, so that the automation and continuous operation of the whole process flow are realized, and the production efficiency and the working quality are greatly improved.
Description
Technical Field
The invention relates to the field of conductive adhesive preparation, in particular to a preparation device and a preparation process of an epoxy/BMI composite adhesive silver conductive adhesive.
Background
The connection material is a key factor affecting the line resolution and the connection strength of the assembly technology, the ageing resistance of the connection material directly affects the service performance and the application value of electronic products, along with the development of society, the environmental awareness of people is gradually improved, new requirements are put forward on the development of the connection material, and research and development of new materials with low energy consumption and environmental friendliness are used for replacing traditional materials with high energy consumption and harmful to the environment.
The conductive adhesive has the advantages of low curing temperature, high resolution, good thermo-mechanical property, simple process, good wettability with materials and the like, and the conductive adhesive replaces the traditional Pb/Sn solder and alloy solder to form a development trend; the conductive adhesive mainly comprises an adhesive, a conductive filler and an auxiliary agent; the composition of the adhesive determines the adhesive strength and ageing resistance of the conductive adhesive; for the conductive adhesive with high bonding strength and aging resistance, the stirring strength and uniformity in the manufacturing process and the fineness of the raw materials influence the quality of the final product, and a long time and cost are required in the stirring process, so that the production cost of the conductive adhesive is high.
Currently, the whole equipment is comparatively scattered, and the information transfer between the different steps in the production process is unsmooth, production efficiency is low, and increased operation complexity, simultaneously, to the production of high-quality conductive adhesive, the stirring process needs multiple substances to carry out accurate stirring, and ensure that the proportion is accurate, and current equipment is under the comparatively scattered structural condition of whole, and the error in the production process increases, influences the quality of final product, and in addition, the redundant of production structure, the stirring process generally needs to consume longer time and cost, thereby leads to the conductive adhesive manufacturing cost great and inefficiency.
However, in the process of producing the conductive adhesive, the quality requirement on the conductive adhesive is higher, or when the conductive adhesive is needed to be used for connection of more precise equipment, various substances are needed to be stirred in the stirring process, the proportion is more precise, so that the structure needed by the flow needs to be changed, the problem of rapidness is solved in the stirring process by the device, and the whole conductive adhesive production process is not reasonably integrated and efficient.
In view of the above, the invention provides a device and a process for preparing an epoxy/BMI composite adhesive silver conductive adhesive.
Disclosure of Invention
The invention aims to solve the technical problems that: because the production process of the conductive adhesive needs multiple environments and different steps, the conductive adhesive in the same batch needs multiple transportation and adjustment according to the environments, which often results in lower efficiency of the production process and more complicated process of the whole flow.
The invention provides the following technical scheme:
the preparation device of the epoxy/BMI composite adhesive silver conductive adhesive comprises a base, a stirring mechanism, a conveying mechanism, a grinding mechanism, a feeding mechanism and a control mechanism, wherein the stirring mechanism is rotatably arranged at the top of the base and is used for circumferentially stirring materials with stirring strength increased along with the increase of rotating speed by matching with the conveying mechanism, and the conductive adhesive can be fully mixed in a circumferential stirring mode; the stirring mechanism is rotatably provided with a conveying mechanism, and the conveying mechanism is used for conveying the stirred materials to the grinding mechanism in a spiral manner from bottom to top at a uniform speed; the top of the stirring mechanism is fixedly provided with the grinding mechanism, and the grinding mechanism is used for synchronously operating with the stirring mechanism to finely grind the ground materials; the side surface of the stirring mechanism is fixedly provided with a feeding mechanism, and the feeding mechanism is used for adding required materials according to the current required working state and redistributing the materials processed by the grinding mechanism; the stirring mechanism, the conveying mechanism and the feeding mechanism are respectively and electrically connected with the control mechanism.
The stirring mechanism comprises a power element, an outer cylinder, a stirring rod, a stirring roller, a shearing assembly and a ring gear, wherein the outer cylinder is a hollow cylinder, and the hollow structure is used for accommodating materials and processing the materials in the cylinder; the stirring rod and the outer cylinder are coaxially arranged, the stirring rod is positioned at the central shaft of the outer cylinder and used for stirring, so that materials can be uniformly mixed, meanwhile, the stirring rod can rapidly rotate and uniformly stir the materials through the driving of the power element, and the upper surface of the stirring rod is fixedly connected with the grinding mechanism, so that two different processing technologies can be communicated; the outer edge of puddler is fixedly connected with the stirring roller, the stirring roller is arranged along the annular of puddler center pin direction, thereby realize the stirring roller is to the contact of dashing of conducting resin, and then realize the step stirring, combine stirring roller length is preferably three-quarters the urceolus internal diameter length, so as to guarantee the stirring roller can the mixture better in rotatory in-process.
When various materials are added into the stirring mechanism, the power element starts to rotate under the control of the control mechanism, the driving wheel rotates due to the transmission structure, the driving wheel is meshed with the ring gear, the ring gear is fixedly connected with the stirring rod coaxially, the power element drives the stirring rod to rotate, the stirring rod is in a rotating state relative to the outer barrel at the moment, the stirring rod is fixedly connected with a plurality of stirring rollers, the length of each stirring roller is three-quarters of the inner diameter of the outer barrel, so that the stirring rollers rotate under the rotation of the stirring rod, the length of each stirring roller is three-quarters of the inner diameter length of the outer barrel 22, and various materials can be well stirred.
In order to achieve an excellent stirring effect, the shearing assemblies and the stirring rods are arranged coaxially, the shearing assemblies and the stirring rollers are arranged at the outer edges of the stirring rods in a staggered mode, so that the stirring rollers can uniformly stir during working, and meanwhile, the shearing assemblies arranged in a staggered mode can uniformly cut materials during the shearing step, so that a better mixing effect is achieved overall; one end fixedly connected with ring gear of puddler, ring gear and puddler coaxial heart arrange for with come above-mentioned puddler and above-mentioned power component synchronous with annular meshing's mode, realize more efficient production and operation.
The conveying mechanism comprises a rotating rod, a spiral blade and a rotating motor; the rotating rod is fixedly connected with the rotating motor, the rotating motor is fixedly connected to the upper surface of the base, the outer edge of the rotating rod is fixedly connected with the spiral blade for realizing spiral conveying, and the spiral blade is positioned in the stirring rod; the spiral blade can form a channel inside the stirring rod so as to realize spiral conveying, a gap is formed between the stirring rod and the base, the gap is one tenth of the height of the outer cylinder, the gap can be realized in the working process of the conveying mechanism, the adjustable stirring under the condition of no need of external force intervention can be realized, materials can be accumulated on the bottom layer under the action of gravity, and accordingly the spiral blade can be rotated to drive the materials to be conveyed.
The grinding mechanism comprises a grinding roller, a transmission gear, a transmission shaft, a rotating gear, a power gear and a power shaft; the power shaft is fixedly connected with the power element, the power gear is fixedly connected with the power shaft in the same axis, the power gear is meshed with the transmission gear, the transmission gear synchronously rotates through the transmission shaft and the rotation gear, the transmission shaft is fixedly connected with the grinding roller, the grinding rollers are 4 or 5, the roller spacing range of the grinding rollers is 5-10um, preferably 5um, so that the grinding rollers can grind materials under the limit of 5um under the combined action of the conveying mechanism, and the grinding rollers synchronously rotate through the meshing of the rotating gears.
When the conveying mechanism conveys materials into the grinding mechanism, the power shaft is fixedly connected with the power element, the power shaft is driven to rotate by the rotation of the power element, the power gear is driven to rotate by the power shaft, the power gear is meshed with the rotating gear, the rotating gear is driven to rotate by the power gear, the rotating gear and the transmission gear are coaxially arranged through the transmission shaft, the transmission gear is fixedly connected with the grinding roller, the transmission shaft is fixedly connected with the grinding roller, and finally the rotating gear drives a plurality of transmission gears to synchronously rotate, so that the grinding roller is driven to rotate.
After the grinding mechanism is grinded, the material is required to be subjected to the following steps, the check valve is opened through the control mechanism, the material enters the storage box from the grinding mechanism through the opening under the action of the check valve, the upper surface of the storage box is fixedly connected with the L-shaped pipe, the L-shaped pipe is fixedly connected with the check valve, the material enters the storage box through the L-shaped pipe, and then enters the outer barrel through the grinding channel, so that the next work is performed.
The power element converts force through a conversion structure, and the conversion structure comprises a bevel gear shaft and a driving wheel; the bevel gear shaft is horizontally arranged, one end of the bevel gear shaft is fixedly connected with the power element, the other bevel gear shaft is vertically arranged and meshed with the bevel gear shaft which is horizontally arranged, the rotating force of the power element is converted through a conical structure by the bevel gear shaft which is horizontally arranged, meanwhile, the vertically arranged bevel gear shaft is converted into the rotating force in the central shaft direction of the outer cylinder through the conical structure, and the rotating force is transmitted to the ring gear through the transmission wheel, so that the stirring rod is driven to rotate.
The feeding mechanism comprises a storage box, an L-shaped pipe, a one-way valve and a grinding channel; the lower surface of the storage box is fixedly connected with the L-shaped pipe, the other end of the L-shaped pipe is fixedly connected with the edge of the outer cylinder and is communicated with the interior of the outer cylinder, so that the materials can be opened and closed through the one-way valve after finishing grinding, and enter the stirring mechanism through the storage box; the one-way valve is fixedly connected in the L-shaped pipe, and the one-way structure can be opened and closed to ensure that materials are sufficiently ground in the grinding mechanism, so that the problem that the materials overflow into the storage box due to pressure in the grinding process is solved; the upper surface of the storage box is fixedly connected with the grinding channel, the other end of the grinding channel is fixedly connected with the grinding mechanism, an opening is formed in one side of the grinding mechanism, and the grinding channel is communicated with the grinding mechanism through the opening.
The feeding mechanism is arranged around the outer barrel, the number of the storage boxes is 4, two storage boxes are arranged and communicated with the grinding mechanism, the rest of the storage boxes are of detachable opening and closing structures, the two storage boxes which are detachable opening and closing are used for adding needed substances in the stirring process of the stirring mechanism, and the substances needed to be added are often not less than two, so that the two storage boxes which are detachably installed are correspondingly arranged, and the other two storage boxes are communicated with the grinding mechanism and the stirring mechanism, so that after the grinding process is finished, the shearing work can be rapidly carried out.
The shear assembly includes a blade, a housing, and a spring; the shell is of a hollow annular structure, and the springs are fixedly connected in the shell along the radial direction of the shell, so that the springs can be stretched under the centrifugal action, and the springs are stretching springs; the utility model discloses a blade, including casing center pin array, blade, grooving, spring, casing edge, the spring is followed casing center pin array quantity is the same with blade quantity, the blade with spring fixed connection, the grooving size can permit the blade passes through, every spring fixed connection one the blade, the radius direction the spring can be in the centrifugal force that produces when the puddler is rotatory, will the spring stretches to drive the blade stretches out, and set up grooving width with blade width ratio is 1.2:1, in order to give the seal sufficient space to install and seal, the blade being in close contact with it to enable dynamic sealing while scraping clean.
The invention also provides a preparation process of the epoxy/BMI composite adhesive silver conductive adhesive, which comprises the following steps:
s1: weighing raw materials according to the proportion of 15% -45% of epoxy resin, 10% -30% of difunctional epoxy resin, 25% -30% of self-made BMI resin, 10% -30% of acrylate monomer, 0.5% -5% of silane coupling agent, 0.05% -0.5% of wetting dispersant and 0.05% -0.5% of antioxidant;
S2: placing epoxy resin, difunctional epoxy resin, BMI resin, (methyl) acrylic ester monomer, silane coupling agent, wetting dispersant and antioxidant in the outer cylinder, driving the stirring rod to rotate through the power element, setting the stirring speed to be 1000r/min, and stirring for 10 minutes;
s3: after the stirring in the S2 process is finished, silver powder is added into the storage box through the storage box of the feeding mechanism, wherein the storage box is of a detachable opening and closing structure, the silver powder is added into the outer cylinder through the one-way valve, and the stirring of materials is continuously carried out for 10 minutes through the stirring roller;
s4: after stirring, after the materials are cooled to room temperature, driving the rotating rod to rotate under the action of the rotating motor, conveying the materials to the grinding mechanism to grind through the spiral blades in a spiral way, and driving 4 grinding rollers to grind through the power element, wherein the minimum distance between the grinding rollers is controlled to be 5um;
s5: after grinding, the one-way valve is controlled to be opened and closed through the control mechanism, so that materials enter the stirring mechanism from the grinding mechanism, then an initiator and a curing agent are added into the stirring mechanism through the storage box according to proportion, then the stirring roller is driven by the power element to mechanically stir the materials for 5 minutes, then the rotating speed of the power element is adjusted to be increased to 2000r/min, the shearing structure is unfolded at the moment, the materials are sheared for 30 seconds, and the mixing process in the high-speed shearing mixer is repeated for 3 times to obtain a uniformly mixed jelly, namely the conductive adhesive.
The beneficial effects of the invention are as follows:
1. according to the invention, the shearing assembly is designed, so that the shearing assembly can automatically adjust the working state under different rotating speeds, and different stirring and shearing effects are realized; and the materials can be sheared and stirred more finely and uniformly through different working states of the shearing assembly, so that the grinding efficiency and quality are improved; meanwhile, the design of the shearing assembly has the characteristics of simplicity and reliability, automatic conversion and adjustment at different rotating speeds are realized through the combination of the inner parts, the tedious and inaccurate manual adjustment is avoided, the working efficiency and the precision are improved, and the risk of personnel operation is reduced.
2. According to the invention, the multistage grinding of the grinding mechanism and the self-adaptive rotary stirring of the stirring mechanism are matched, the materials are directly stirred and input into the grinding, so that the cost between the steps is reduced, the production efficiency and the processing quality are greatly improved, the complexity of manual intervention and transfer is reduced, the possible error and workload are reduced, the stability and uniformity of the materials in the process can be ensured, the space can be effectively utilized, the input cost of labor force is reduced because an additional conveying belt or manual transportation is not required, the waste and loss of the materials are avoided, the production efficiency is improved, and the cost is reduced.
3. According to the invention, the feeding mechanism, the grinding mechanism and the stirring mechanism are sequentially arranged and combined, so that stirring is firstly performed, then grinding is performed, and finally repeated circulation is realized through the feeding structure, grinding and stirring shearing of materials are efficiently completed, automatic continuous operation of the whole process flow is realized, the production efficiency and the working quality are greatly improved, and the device has the advantages of compact structure, small occupied space, simplicity in operation and convenience in maintenance, and can effectively reduce the production cost and the operation cost. Meanwhile, in the specific use process, the equipment can meet different process requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front elevational view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is a cross-sectional view of the overall structure of the present invention;
FIG. 4 is a perspective cross-sectional view of the overall structure of the present invention;
FIG. 5 is a schematic view of a helical blade structure according to the present invention;
FIG. 6 is a perspective cross-sectional view of the transport mechanism of the present invention;
FIG. 7 is a perspective cross-sectional view of the polishing mechanism of the present invention;
FIG. 8 is a schematic view of a polishing mechanism according to the present invention;
FIG. 9 is a schematic view of a shear assembly of the present invention;
FIG. 10 is a view of the internal structure of the shear assembly of the present invention;
fig. 11 is a process flow diagram of the present invention.
In the figure: 1. a base; 2. a stirring mechanism; 21. a power element; 211. a conversion structure; 212. a bevel gear shaft; 213. a driving wheel; 22. an outer cylinder; 23. a stirring rod; 231. a gap; 24. a stirring roller; 25. a shear assembly; 251. a blade; 252. a housing; 253. a spring; 254. slotting; 26. a ring gear; 3. a transport mechanism; 31. a rotating lever; 32. spiral leaves; 33. a rotating motor; 4. a grinding mechanism; 41. a grinding roller; 42. a transmission gear; 43. a transmission shaft; 44. rotating the gear; 45. a power gear; 46. a power shaft; 5. a feeding mechanism; 51. a storage tank; 52. an L-shaped tube; 53. a one-way valve; 54. a grinding channel; 55. an opening.
Detailed Description
In order to better understand the above technical solutions, the following description will refer to the drawings and specific embodiments.
Example 1:
as shown in fig. 1, 2, 3 and 4, a preparation device of an epoxy/BMI composite adhesive silver conductive adhesive is provided, which comprises a base 1, a stirring mechanism 2, a conveying mechanism 3, a grinding mechanism 4, a feeding mechanism 5 and a control mechanism.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the stirring mechanism 2 is rotatably installed at the top of the base 1, so as to realize circumferential stirring of materials, and as the rotation speed of the stirring mechanism 2 increases, the stirring strength also correspondingly increases so as to achieve a better mixing effect, meanwhile, the transporting mechanism 3 is rotatably installed at the stirring mechanism 2, so that the stirred materials are transported to the grinding mechanism 4 through a uniform speed screw from bottom to top, and the transporting mechanism 3 is designed so that the materials can be kept stable in the transportation process, and the problems of blockage, leakage and the like do not occur; the top of the stirring mechanism 2 is fixedly provided with the grinding mechanism 4, the grinding mechanism 4 and the stirring mechanism 2 synchronously operate and are used for finely grinding the ground materials, and the design of the grinding mechanism 4 ensures that the materials can be uniformly ground; the side surface of the stirring mechanism 2 is fixedly provided with the feeding mechanism 5, so that required materials are added according to the current required working state, the materials processed by the grinding mechanism 4 are redistributed, and the feeding mechanism 5 can accurately control the input amount of the materials so as to meet the working requirement; the stirring mechanism 2, the conveying mechanism 3 and the feeding mechanism 5 are all electrically connected with the control mechanism.
As shown in fig. 4, 5 and 6, the stirring mechanism 2 comprises a power element 21, an outer cylinder 22, a stirring rod 23, a stirring roller 24, a shearing assembly 25 and a ring gear 26, wherein the outer cylinder 22 is designed into a hollow cylinder, the hollow structure can contain materials and process the materials in the cylinder, the stirring rod 23 and the outer cylinder 22 are coaxially arranged, and the stirring rod 23 is arranged at the central shaft of the outer cylinder 22 to stir the materials so as to realize uniform mixing of the materials; through the drive of power component 21, stirring rod 23 can quick rotatory and evenly mix the material, the upper surface of stirring rod 23 with grinding mechanism 4 fixed connection can link together two different processing technologies like this, the outward flange of stirring rod 23 is fixed to be connected stirring roller 24, stirring roller 24 is along stirring rod 23 center pin direction annular arrangement, stirring roller 24's length is selected to be three quarters of outer tube 22 internal diameter length to ensure stirring roller 24 can better mix the material in the rotatory in-process, shearing module 25 with stirring roller 24 staggered arrangement is in stirring rod 23 outward flange, stirring rod 23 one end fixed connection ring gear 26, ring gear 26's number of teeth is the same with drive wheel 213 realizes turning force with power component 21 turns into stirring rod 23's turning force.
When various materials are added into the stirring mechanism 2, the power element 21 starts to rotate under the control of the control mechanism, the driving wheel 213 rotates due to the transmission structure, the driving wheel 213 is meshed with the ring gear 26, the ring gear 26 is fixedly connected with the stirring rod 23 coaxially, the power element 21 drives the stirring rod 23 to rotate, the stirring rod 23 is in a rotating state relative to the outer barrel 22 at the moment, the stirring rod 23 is fixedly connected with a plurality of stirring rollers 24, the length of the stirring rollers 24 is three-quarters of the inner diameter of the outer barrel 22, so that the stirring rollers 24 rotate under the rotation of the stirring rod 23, and the length of the stirring rollers is set to be three-quarters of the inner diameter of the outer barrel 22, so that various materials can be well stirred.
When various materials are added into the stirring mechanism 2, the power element 21 starts to rotate, and the stirring rod 23 and the stirring roller 24 are driven to rotate together through a transmission structure, so that uniform mixing of the various materials is realized, because the coaxial arrangement of the stirring rod 23 and the stirring roller 24 and the inner diameter length of the outer barrel 22, with the length of the stirring roller 24 preferably being three-fourths, ensure that the stirring roller 24 can better mix the materials in the rotating process, and in addition, the control of the control mechanism can realize the start and stop and speed control of the power element 21, so that the mixing quality of the materials is more accurately controlled.
As shown in fig. 4, the shearing assembly 25 and the stirring rod 23 are coaxially arranged, and the shearing assembly 25 and the stirring roller 24 are staggered on the outer edge of the stirring rod 23, so that the stirring roller 24 can uniformly stir during working, and meanwhile, the shearing assembly 25 which is staggered can uniformly cut materials during the shearing step and cooperate with the stirring roller 24, so that the stirring roller 24 cooperates with the shearing assembly, and the two steps of stirring and shearing are more coordinated due to the staggered arrangement, so that the stirring and shearing of the materials are more uniform, and the overall better mixing effect is achieved; one end of the stirring rod 23 is fixedly connected with a ring gear 26, and the ring gear 26 and the stirring rod 23 are coaxially arranged and used for synchronizing the stirring rod 23 and the power element 21 in a mode of being meshed with the ring, so that more efficient production and operation are realized.
As shown in fig. 3, the transport mechanism 3 includes a rotating lever 31, a spiral blade 32, and a rotating motor 33; the rotating rod 31 is fixedly connected with the rotating motor 33, the rotating motor 33 is fixedly connected to the upper surface of the base 1, the outer edge of the rotating rod 31 is fixedly connected with the spiral blade 32 for realizing spiral conveying, and the spiral blade 32 is positioned in the stirring rod 23; so that the spiral blade 32 can form a channel inside the stirring rod 23 to realize spiral conveying, a gap 231 is arranged between the stirring rod 23 and the base 1, the size of the gap 231 is one tenth of the height of the outer cylinder 22, the size of the gap 231 can be realized in the working process of the conveying mechanism 3, and materials can be accumulated on the bottom layer under the action of gravity under the condition of no external force intervention, so that the spiral blade 32 can rotate to drive the materials to be conveyed.
When the stirring mechanism 2 works, since the rotating rod 31 is located inside the stirring rod 23, the stirring rod 23 is of a hollow structure, the rotating rod 23 is not driven to rotate by the rotation of the stirring rod 23, because the rotating rod 31 is fixedly connected with the rotating motor 33, the rotating motor 33 is fixedly connected to the upper surface of the base 1, when stirring is performed, the rotating rod 31 does not rotate, the spiral blade 32 does not rotate, materials are only stirred in the outer cylinder 22, when the stirring is completed, the stirred materials are required to be ground, the rotating motor 33 works by the regulation and control of the control mechanism, the rotating rod 31 is driven to rotate, the spiral blade 32 is driven to rotate, spiral conveying is realized, the materials enter from the gap of one tenth of the height of the outer cylinder 22, the materials continuously enter the conveying mechanism 3 under the action of gravity, and the conveying mechanism 3 conveys the materials into the grinding mechanism 4 for grinding.
The advantage of rabbling mechanism 2 lies in that it can be through with the puddler 23 with the position of dwang 31 sets up together for when stirring work goes on, the spiral leaf 32 can not rotate, thereby avoided the material to receive excessive mechanical force and vibration because of the condition of stirring excessively of screw conveying, reduced the damage to the material like this, still improved the stability of material simultaneously, and when need grind the material that the stirring was accomplished, through control mechanism control the rotation of rotating motor 33, and then drive spiral leaf 32 rotates, realizes the transport of material, can guarantee like this smooth and easy transport and the high-efficient grinding of material, transport mechanism 3 will the material follow in the rabbling mechanism 2 grind mechanism 4, this kind of design can reduce manual operation, improves production efficiency and product quality, has reduced labour and time cost in the production process.
As shown in fig. 7 and 8, the grinding mechanism 4 includes a grinding roller 41, a transmission gear 42, a transmission shaft 43, a rotation gear 44, a power gear 45, and a power shaft 46; the power shaft 46 with power element 21 fixed connection, power gear 45 with power shaft 46 coaxial fixed connection, power gear 45 with drive gear 42 meshing, drive gear 42 passes through transmission shaft 43 with rotate gear 44 synchronous rotation, transmission shaft 43 with grinding roller 41 fixed connection, grinding roller 41 sets up to 4, just grinding roller 41's running roller interval sets up to 5um, so set up can be under transport mechanism 3's combined action, grind the material under 5 um's size restriction to satisfy the demand of output product, grinding roller 41 passes through the mesh synchronous rotation between the rotation gear 44.
When the conveying mechanism 3 sends materials into the grinding mechanism 4, the power shaft 46 is fixedly connected with the power element 21, the power element 21 rotates to drive the power shaft 46 to rotate, the power shaft 46 drives the power gear 45 to rotate, the power gear 45 is meshed with the rotating gear 44, the power gear 45 drives the rotating gear 44 to rotate, the rotating gear 44 and the transmission gear 42 are coaxially arranged through the transmission shaft 43, the transmission gear 42 is fixedly connected with the grinding roller 41, the transmission shaft 43 is fixedly connected with the grinding roller 41, and finally the rotating gear 44 drives a plurality of transmission gears 42 to synchronously rotate, so that the grinding roller 41 is driven to rotate.
The whole grinding mechanism 4 converts the force of the power element 21 into the rotating force of the grinding mechanism 4 through a series of transmission and connection, and as the rotating gear 44 and the transmission gear 42 are arranged coaxially through the transmission shaft 43, the transmission gear 42 can replace gears according to specific rotating speed requirements and increase or reduce the number of teeth, so that the working strength of the stirring mechanism 2 can be not influenced under the condition that the rotating speed of the power element 21 is fixed, the grinding efficiency of the grinding mechanism 4 is improved through replacing the transmission gear 42, the grinding area can be enlarged to 3 by 4 grinding rollers 41, materials can be processed at three positions simultaneously, and the rotating speed cannot be influenced.
As shown in fig. 4, the power element 21 converts force through a conversion structure 211, and the conversion structure 211 includes a bevel gear shaft 212 and a driving wheel 213; the bevel gear shaft 212 is horizontally arranged, one end of the bevel gear shaft 212 is fixedly connected with the power element 21, the other bevel gear shaft 212 is vertically arranged and is meshed with the bevel gear shaft 212 which is horizontally arranged, the horizontally arranged bevel gear shaft 212 converts the rotating force of the power element 21 through a conical structure, meanwhile, the vertically arranged bevel gear shaft 212 is converted into the rotating force in the central shaft direction of the outer cylinder 22 through the conical structure, and the rotating force is transmitted to the ring gear 26 through the transmission wheel 213, so that the stirring rod 23 is driven to rotate.
The power element 21 is a single-direction rotation acting force, the shaft end of the bevel gear shaft 212 which is horizontally arranged is fixedly connected with the power element 21, so that the power element 21 can provide the rotation force of the bevel gear shaft 212, the force of the power element 21 is converted into the rotation force in the vertical direction due to the meshing of the bevel gear shaft 212 which is vertically arranged and the bevel gear shaft 212 which is horizontally arranged, and the driving wheel 213 is fixedly connected with the driving wheel 213, the driving wheel 213 is meshed with the ring gear 26 to drive the ring gear 26 to rotate, so that the stirring rod 23 is driven to rotate, and stirring is realized.
As shown in fig. 1, 2, 3 and 4, the feeding mechanism 5 includes a storage tank 51, an L-shaped pipe 52, a check valve 53 and a grinding passage 54; the lower surface of the storage box 51 is fixedly connected with the L-shaped pipe 52, the other end of the L-shaped pipe 52 is fixedly connected with the edge of the outer cylinder 22 and is communicated with the interior of the outer cylinder 22, so that the materials can be opened and closed through the one-way valve 53 after being ground, and enter the stirring mechanism 2 through the storage box 51; the one-way valve 53 is fixedly connected in the L-shaped pipe 52, and the one-way structure can be opened and closed to ensure that materials are sufficiently ground in the grinding mechanism 4, so that the problem that the materials overflow into the storage box 51 due to pressure in the grinding process is solved; the upper surface of the storage box 51 is fixedly connected with the grinding channel 54, the other end of the grinding channel 54 is fixedly connected with the grinding mechanism 4, an opening 55 is formed in one side of the grinding mechanism 4, and the grinding channel 54 is communicated with the grinding mechanism 4 through the opening 55.
After the grinding mechanism 4 is grinded, as the next step is needed, the check valve 53 is opened by the control mechanism, the material enters the storage box 51 from the grinding mechanism 4 through the opening 55 under the action of the check valve 53, the upper surface of the storage box 51 is fixedly connected with the L-shaped pipe 52, the check valve 53 is fixedly connected in the L-shaped pipe 52, the material enters the storage box 51 through the L-shaped pipe 52 and then enters the outer barrel 22 through the grinding channel 54, so that the next step is performed.
The lower surface of the storage box 51 is fixedly connected with the L-shaped pipe 52, the other end of the L-shaped pipe 52 is fixedly connected with the edge of the outer cylinder 22 and is communicated with the interior of the outer cylinder 22, the design can ensure that materials enter the stirring mechanism 2 from the storage box 51 after finishing grinding through opening and closing of the one-way valve 53, the one-way valve 53 is fixedly connected in the L-shaped pipe 52, the one-way valve 53 is of a one-way structure, the materials can be fully ground in the grinding mechanism 4, the problem that the materials overflow into the storage box 51 due to pressure in the grinding process is reduced, the upper surface of the storage box 51 is fixedly connected with the grinding channel 54, the other end of the grinding channel 54 is fixedly connected with the grinding mechanism 4, one side of the grinding mechanism 4 is provided with an opening 55, and the grinding channel 54 is communicated with the grinding mechanism 4 through the opening 55. The advantage of this design is that it ensures smooth transfer of material between different mechanisms, improving production efficiency, and due to the action of the one-way valve 53, it reduces the overflow problem of material during grinding, and makes the production process more stable and controllable.
As shown in fig. 4, the feeding mechanism 5 is disposed around the outer cylinder 22, the number of the storage tanks 51 is 4, two of the storage tanks 51 are provided to communicate with the grinding mechanism 4, the remaining storage tanks 51 are of a detachable opening and closing structure, the two detachable opening and closing storage tanks 51 are used for adding required substances in the stirring process of the stirring mechanism 2, and the substances required to be added are often not less than two, so that the two detachably mounted storage tanks 51 are correspondingly provided, and the other two storage tanks 51 communicate with the grinding mechanism 4 and the stirring mechanism 2, so that the shearing work can be performed quickly after the grinding process is finished.
Since the number of the storage boxes 51 is 4, the required initiator and curing agent can be added in the process of stirring and shearing materials by arranging two storage boxes 51 in a detachable opening and closing structure, and the other two storage boxes 51 are used for receiving the materials after the grinding mechanism 4; the feeding mechanism 5 can be flexibly adjusted according to specific requirements, and meanwhile stable material output can be achieved.
As shown in fig. 9 and 10, the shear assembly 25 includes a blade 251, a housing 252, and a spring 253; the casing 252 is of a hollow annular structure, and the spring 253 is fixedly connected inside the casing 252 along the radial direction of the casing 252, so that the spring 253 can be stretched under the centrifugal action, and the spring 253 is a stretching spring 253; the number of the springs 253 along the central axis array of the shell 252 is the same as that of the blades 251, the blades 251 are fixedly connected with the springs 253, grooves 254 are formed in the edges of the shell 252, the grooves 254 can permit the blades 251 to pass through, each spring 253 is fixedly connected with one blade 251, centrifugal force generated when the stirring rod 23 rotates can be generated by the springs 253 in the radial direction, the springs 253 are stretched, the blades 251 are driven to extend, and the width ratio of the grooves 254 to the blades 251 is 1.2:1, in order to give the seal sufficient space to install and seal, the blade 251 being in close contact with it allows for dynamic sealing while scraping clean.
Since the shearing assembly 25 is fixedly connected with the stirring rod 23 coaxially, when the stirring rod 23 rotates under the action of the power element 21, the shearing assembly 25 is fixedly connected with the spring 253 inside, the other end of the spring 253 is fixedly connected with the blade 251, and the stirring rod 23 is driven by the power element 21, the stirring requirement can be met only when the stirring process is carried out due to the fact that the rotation speed required by the stirring process and the shearing process is different, and the blade 251 cannot be unfolded due to the fact that the rotation speed required by the stirring process is 1000r/min, and the spring 253 cannot stretch under the centrifugal force of 1000r/min due to the action of the spring 253; the stirring and shearing operation performed twice after the grinding operation is completed, the rotation speed is required to be 2000r/min, the centrifugal force is increased at this time, and the blade 251 is thrown out under the tension of the spring 253, so that a rotary shearing structure is formed.
The shearing assembly 25 is fixedly connected with the stirring rod 23 in a coaxial manner, so that the shearing assembly 25 can perform shearing work when the stirring rod 23 rotates, the stirring and grinding processes of the mixture are accelerated, and the working efficiency is improved, and the rotation speed can be adjusted according to the requirement in the stirring and shearing processes because the spring 253 and the blade 251 are fixedly connected inside the shearing assembly 25, so that the optimal stirring and shearing effects are achieved; in the stirring process, the set rotating speed is 1000r/min, the optimal stirring effect can be achieved, the secondary stirring and shearing work performed after the grinding work is finished needs to be carried out, the rotating speed is 2000r/min, the centrifugal force can be increased, the blade 251 is thrown out under the stretching of the spring 253, and the rotating and shearing structure is formed, so that the grinding effect is further improved.
When the stirring device works, various raw materials are added into the outer cylinder 22 according to a proportion, then the power element 21 starts to rotate under the regulation and control of the control mechanism, the transmission wheel 213 rotates due to the transmission structure, the transmission wheel 213 is meshed with the ring gear 26, the ring gear 26 is fixedly connected with the stirring rod 23 coaxially, the power element 21 drives the stirring rod 23 to rotate, the stirring rod 23 is in a rotating state relative to the outer cylinder 22 at the moment, the stirring rod 23 is fixedly connected with a plurality of stirring rollers 24, the length of the stirring rollers 24 is three-quarters of the inner diameter of the outer cylinder 22, so that the stirring rollers 24 rotate under the rotation of the stirring rod 23, and the length is set to be three-quarters of the inner diameter of the outer cylinder 22, so that various materials can be well stirred; this process lasts 10 minutes, the rotation speed is 1000r/min, after the stirring is finished, the one-way valve 53 is opened by the control mechanism, and the materials can be added into the outer cylinder 22 under the action of the one-way valve 53.
Because the rotating rod 31 is located inside the stirring rod 23, the stirring rod 23 is of a hollow structure, the rotation of the stirring rod 23 does not drive the rotating rod 31 to rotate, the rotating motor 33 works to drive the rotating rod 31 to rotate through the regulation and control of the control mechanism, and then the spiral blade 32 is driven to rotate, so that spiral conveying is realized, materials enter from the gap of one tenth of the height of the outer cylinder 22, and continuously enter the conveying mechanism 3 under the action of gravity, and the conveying mechanism 3 conveys the materials into the grinding mechanism 4 for grinding; the grinding mechanism 4 is driven by a series of transmission structures to grind materials, then the control mechanism controls the one-way valve 53 to be opened, so that the materials enter the storage box 51 through the opening 55, then enter the outer cylinder 22 through the grinding channel 54 to be subjected to high-speed rotation shearing, the spring 253 is stretched under the action of centrifugal force due to the fact that the rotating speed is increased to 2000r/min, the blade 251 is drawn out of the groove 254, and when the rotating speed is reduced, the blade 251 is retracted and is set to be 1.2;2, the blade 251 is scraped to clean the material residue on the surface after cutting.
As shown in fig. 11, the invention also provides a preparation process of the epoxy/BMI composite adhesive silver conductive adhesive, which comprises the following steps:
s1: weighing raw materials according to the proportion of 15% -45% of epoxy resin, 10% -30% of difunctional epoxy resin, 25% -30% of self-made BMI resin, 10% -30% of acrylate monomer, 0.5% -5% of silane coupling agent, 0.05% -0.5% of wetting dispersant and 0.05% -0.5% of antioxidant;
s2: placing epoxy resin, difunctional epoxy resin, BMI resin, (methyl) acrylic ester monomer, silane coupling agent, wetting dispersant and antioxidant in the outer cylinder 22, driving the stirring rod 23 to rotate through the power element 21, setting the stirring speed to be 1000r/min, and stirring for 10 minutes;
s3: after the stirring in the S2 process is finished, silver powder is added into the storage box 51 through the storage box 51 of the feeding mechanism 5 and the storage box 51 is of a detachable opening and closing structure, the silver powder is added into the outer cylinder 22 through the one-way valve 53, and the stirring of the materials is continued for 10 minutes through the stirring roller 24;
s4: after stirring, after the materials are cooled to room temperature, the rotating rod 31 is driven to rotate under the action of the rotating motor 33, the materials are transported into the grinding mechanism 4 to be ground through the spiral blades 32 in a spiral mode, then 4 grinding rollers 41 are driven to be ground through the power element 21, and the minimum distance between the grinding rollers 41 is controlled to be 5 microns;
S5: after finishing grinding, the one-way valve 53 is controlled to open and close by the control mechanism, so that materials enter the stirring mechanism 2 from the grinding mechanism 4, then an initiator and a curing agent are added in proportion by the storage box 51, then the stirring roller 24 is driven by the power element 21 to mechanically stir the materials for 5 minutes, then the rotating speed of the power element 21 is adjusted to be increased to 2000r/min, the shearing structure is unfolded at the moment, the materials are sheared for 30 seconds, and the mixing process in the high-speed shearing mixer is repeated for 3 times to obtain a uniformly mixed jelly, namely the conductive adhesive.
Example 2:
the surface of the shearing structure is a tower-shaped inclined surface and is staggered with the stirring roller 24 on the outer surface of the stirring rod 23, so that residues of materials on the shearing mechanism are reduced, more materials can slide down under the action of gravity through the tower-shaped structure, and the complexity of later cleaning is reduced; and under the cooperation of rotation centrifugal force, the material can easily slide from the edge through the inclined structure that sets up.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive comprises a base (1) and a control mechanism, and is characterized in that: the stirring mechanism (2) is rotatably arranged at the top of the base (1), and the stirring mechanism (2) is used for realizing circumferential stirring of materials with stirring intensity increased along with the increase of the rotating speed in cooperation with the conveying mechanism (3); the stirring mechanism (2) is rotatably provided with a conveying mechanism (3), and the conveying mechanism (3) is used for conveying the stirred materials to the grinding mechanism (4) in a spiral manner from bottom to top at a uniform speed; the top of the stirring mechanism (2) is fixedly provided with the grinding mechanism (4), and the grinding mechanism (4) is used for synchronously operating with the stirring mechanism (2) to finely grind the stirred materials; the side surface of the stirring mechanism (2) is fixedly provided with a feeding mechanism (5), and the feeding mechanism (5) is used for adding required materials according to the current required working state and redistributing the materials processed by the grinding mechanism (4); the stirring mechanism (2), the conveying mechanism (3) and the feeding mechanism (5) are respectively and electrically connected with the control mechanism.
2. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 1, wherein the preparation device comprises the following components: the stirring mechanism (2) comprises a power element (21), an outer cylinder (22), a stirring rod (23), a stirring roller (24), a shearing assembly (25) and a ring gear (26); the outer cylinder (22) is a hollow cylinder, the stirring rod (23) and the outer cylinder (22) are coaxially arranged, the upper surface of the stirring rod (23) is fixedly connected with the grinding mechanism (4), the outer edge of the stirring rod (23) is fixedly connected with the stirring roller (24), the stirring roller (24) is annularly arranged along the central axis direction of the stirring rod (23), and the stirring roller (24) is used for being matched with the shearing assembly (25) to realize step stirring; the shearing assembly (25) and the stirring rod (23) are coaxially arranged, and the shearing assembly (25) and the stirring roller (24) are staggered at the outer edge of the stirring rod (23); one end of the stirring rod (23) is fixedly connected with the ring gear (26), and the ring gear (26) and the stirring rod (23) are coaxial.
3. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 2, wherein the preparation device is characterized in that: the conveying mechanism (3) comprises a rotating rod (31), a spiral blade (32) and a rotating motor (33); the rotating rod (31) is fixedly connected with the rotating motor (33), the rotating motor (33) is fixedly connected to the upper surface of the base (1), the outer edge of the rotating rod (31) is fixedly connected with the spiral blade (32), and the spiral blade (32) is positioned in the stirring rod (23); a gap (231) is arranged between the stirring rod (23) and the base (1), the size of the gap (231) is one tenth of the height of the outer cylinder (22), and the gap (231) is used for being matched with the stirring mechanism (2) to realize step communication so as to perform adjustable stirring.
4. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 3, wherein the preparation device comprises the following components: the grinding mechanism (4) comprises a grinding roller (41), a transmission gear (42), a transmission shaft (43), a rotating gear (44), a power gear (45) and a power shaft (46); the utility model provides a grinding machine, including power component (21), power shaft (46), power gear (45) with power shaft (46) coaxial fixed connection, power gear (45) with drive gear (42) meshing, drive gear (42) pass through transmission shaft (43) with rotate gear (44) synchronous rotation, transmission shaft (43) with grinding roller (41) fixed connection, grinding roller (41) set up to 4-6, grinding roller (41) are used for the cooperation transport mechanism (3) carry out rotatory rolling type successive fine grinding, grinding roller (41) pass through the meshing synchronous rotation between rotating gear (44).
5. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 3, wherein the preparation device comprises the following components: the power element (21) is rotationally connected with the conversion structure (211), and the conversion structure (211) comprises a bevel gear shaft (212) and a driving wheel (213); the bevel gear shaft (212) is horizontally arranged, one end of the bevel gear shaft is fixedly connected with the power element (21), the other bevel gear shaft (212) is vertically arranged and meshed with the bevel gear shaft (212) which is horizontally arranged, the other end of the bevel gear shaft (212) which is vertically arranged is fixedly connected with the driving wheel (213), the driving wheel (213) is meshed with the ring gear (26), and the power element (21) converts force through the conversion structure (211) to supply the transportation mechanism (3) to rotate.
6. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 4, wherein the preparation device comprises: the feeding mechanism (5) comprises a storage box (51), an L-shaped pipe (52), a one-way valve (53) and a grinding channel (54); the lower surface of the storage box (51) is fixedly connected with the L-shaped pipe (52), the other end of the L-shaped pipe (52) is fixedly connected with the edge of the outer barrel (22) and is communicated with the inside of the outer barrel (22), the one-way valve (53) is fixedly connected in the L-shaped pipe (52), and the one-way valve (53) is used for matching with the grinding mechanism (4) to realize semi-automatic production of materials in equipment; the grinding device is characterized in that the upper surface of the storage box (51) is fixedly connected with the grinding channel (54), the other end of the grinding channel (54) is fixedly connected with the grinding mechanism (4), an opening (55) is formed in one side of the grinding mechanism (4), and the grinding channel (54) is communicated with the grinding mechanism (4) through the opening (55).
7. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 6, wherein the preparation device comprises: the feeding mechanism (5) is arranged around the outer cylinder (22), the number of the storage boxes (51) is 4, at least two storage boxes (51) are communicated with the grinding mechanism (4), and the rest storage boxes (51) are of a detachable opening and closing structure.
8. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive according to claim 2, wherein the preparation device is characterized in that: the shear assembly (25) includes a blade (251), a housing (252), and a spring (253); the shell (252) is of a hollow annular structure, the spring (253) is fixedly connected inside the shell (252) along the radial direction of the shell (252), and the spring (253) is an extension spring; the number of the springs (253) is the same as the number of the blades (251) along the central shaft array of the shell (252), the blades (251) are fixedly connected with the springs (253), grooves (254) are formed in the edge of the shell (252), and the grooves (254) can allow the blades (251) to pass through.
9. The preparation device of the epoxy/BMI composite adhesive silver conductive adhesive, which is characterized in that: the ratio of the slot (254) width to the blade (251) width is 1.2:1, a sealing element is arranged at the edge of the groove (254), and scraping and cleaning are performed while dynamic sealing is realized through the sealing element and the blade (251).
10. A preparation process of an epoxy/BMI composite adhesive silver conductive adhesive is characterized by comprising the following steps: the preparation process of the epoxy BMI composite adhesive silver conductive adhesive comprises the following steps:
s1: weighing raw materials according to the proportion of 15% -45% of epoxy resin, 10% -30% of difunctional epoxy resin, 25% -30% of self-made BMI resin, 10% -30% of acrylate monomer, 0.5% -5% of silane coupling agent, 0.05% -0.5% of wetting dispersant and 0.05% -0.5% of antioxidant;
s2: the epoxy resin, the difunctional epoxy resin, the BMI resin, the (methyl) acrylic ester monomer, the silane coupling agent, the wetting dispersant and the antioxidant are placed into a box through a feeding mechanism (5) and mixed by a mechanical stirrer, wherein the stirring speed is 1000 rpm, and the time is 10 minutes;
s3: adding silver powder, and continuously stirring for 10 minutes;
s4: after the mixture is cooled to room temperature, a three-roller grinder is used for grinding the glue solution, and the minimum spacing between rollers is controlled to be 5um;
s5: and (3) adding the initiator and the curing agent in proportion, mechanically stirring for 5 minutes, then transferring the mixture into a high-speed shearing mixer for mixing, wherein the mixing speed is 2000 rpm, the time is 30s, and repeating the mixing process in the high-speed shearing mixer for 3 times to obtain a uniformly mixed jelly, namely the conductive adhesive.
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| CN202310759215.0A CN116651300A (en) | 2023-06-26 | 2023-06-26 | Preparation device and process of epoxy/BMI composite adhesive silver conductive adhesive |
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| CN202310759215.0A CN116651300A (en) | 2023-06-26 | 2023-06-26 | Preparation device and process of epoxy/BMI composite adhesive silver conductive adhesive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116920712A (en) * | 2023-09-12 | 2023-10-24 | 天津盛达新材料有限公司 | High-temperature-resistant powder coating preparation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116920712A (en) * | 2023-09-12 | 2023-10-24 | 天津盛达新材料有限公司 | High-temperature-resistant powder coating preparation device |
| CN116920712B (en) * | 2023-09-12 | 2023-11-21 | 天津盛达新材料有限公司 | High-temperature-resistant powder coating preparation device |
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