CN115321833B - Preparation method of graphene conductive film - Google Patents
Preparation method of graphene conductive film Download PDFInfo
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- CN115321833B CN115321833B CN202211064126.6A CN202211064126A CN115321833B CN 115321833 B CN115321833 B CN 115321833B CN 202211064126 A CN202211064126 A CN 202211064126A CN 115321833 B CN115321833 B CN 115321833B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 103
- 239000011248 coating agent Substances 0.000 claims abstract description 102
- 239000011521 glass Substances 0.000 claims abstract description 74
- 238000007599 discharging Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005498 polishing Methods 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 60
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- 239000002356 single layer Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000264877 Hippospongia communis Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 graphite alkene Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
- B05D2203/35—Glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of a graphene conductive film. In the preparation method of the graphene conductive film, the graphene conductive film is prepared by adopting graphene conductive film processing equipment, a discharging hopper with a smaller outlet is firstly arranged to output a coating solution to a discharging groove, and then the coating solution is uniformly coated on the surface of a glass plate by the discharging groove with a larger outlet size in the moving process of the discharging groove relative to the glass plate, so that the problem of uneven coating caused by poor flowability of the coating solution is avoided, the coating effect is improved, and the quality of the prepared graphene conductive film is ensured.
Description
Technical Field
The invention belongs to the technical field of graphene conductive films, and particularly relates to a preparation method of a graphene conductive film.
Background
The transparent conductive film commonly used in the prior art mainly comprises a metal film and a metal oxide film. Among metal oxides, indium Tin Oxide (ITO) is popular, and has good optical and electrical properties, and the preparation technology is mature. However, indium tin oxide is expensive due to rare raw materials, and meanwhile, the transparent conductive film of indium tin oxide cannot flex, which limits the application range and future of the transparent conductive film of indium tin oxide. Single-layer graphite, also called Graphene (Graphene), is a lattice structure formed by tightly stacking single-layer carbon atoms into two-dimensional honeycombs by graphite bonds (sp 2), is the thinnest and most rigid material in the world at present, has higher heat conductivity than carbon nanotubes and diamond, higher electron mobility than carbon nanotubes or silicon crystals at normal temperature, lower resistivity than copper or silver, is the material with the smallest resistivity in the world at present, and has excellent light transmittance even though only one carbon atom has the thickness, so that the single-layer graphite has great potential in application of transparent conductive films.
However, the following problems still remain in the preparation of graphene conductive films in the prior art:
1. when the graphene conductive film is prepared, the prepared coating solution is required to be uniformly coated on a dry glass plate, and the coating non-uniformity phenomenon is easy to occur during coating due to poor flowability of the coating solution, so that the preparation of the subsequent graphene conductive film is influenced;
2. when preparing graphene conductive film, after coating solution, lines can be inevitably formed, and then the production of the graphene conductive film is affected.
Disclosure of Invention
In view of the above, the present invention discloses a method for preparing a graphene conductive film, so as to overcome or at least partially solve the above-mentioned problems.
According to the preparation method of the graphene conductive film, graphene conductive film processing equipment is adopted to perform preparation operation of the graphene conductive film, and comprises a bracket, a blanking groove, a blanking hopper and a blanking screw; the support is used for horizontally tiling and placing the glass plate, the blanking groove is positioned above the glass plate and is in sliding connection with the support along the horizontal direction, the blanking hopper is positioned above the blanking groove and is in sliding connection with the blanking groove, the outlet of the blanking hopper is communicated with the inlet of the blanking groove, and the blanking screw is positioned in the blanking hopper and extends to the outlet position of the blanking hopper;
the preparation method of the graphene conductive film specifically comprises the following steps:
step S1, feeding: placing the coating solution into the discharging hopper, and horizontally spreading the glass plate on the bracket;
step S2, feeding a coating solution into a tank: controlling the blanking hopper to move along the blanking groove, controlling the blanking screw to rotate, and continuously and uniformly injecting the coating solution in the blanking hopper into the blanking groove;
step S3, coating: controlling the discharging groove to move relative to the bracket, discharging the coating solution in the discharging groove and coating the coating solution on a glass plate;
step S5, resetting: after the blanking groove moves to the whole glass plate relative to the bracket and is coated with the coating solution, the blanking groove is controlled to reversely move to an initial position relative to the bracket;
step S6, blanking: and taking the glass plate coated with the coating solution off the bracket, and carrying out subsequent procedures to finish the preparation of the graphene conductive film.
Preferably, the graphene conductive film processing device comprises a first motor, a first gear and a first rack; the first motor is arranged on the discharging hopper, the first gear is sleeved and fixed on an output shaft of the first motor, the first rack is fixed on the discharging groove, and the first gear is meshed and connected with the first rack.
Preferably, the graphene conductive film processing device comprises a first rotary table, a first pawl and a first elastic piece; the inner circumferential surface of the first gear is provided with a first ratchet, the first rotary table is coaxially and fixedly connected with the blanking screw rod and is positioned in the first gear, the outer circumferential surface of the first rotary table is provided with a first pawl, the first elastic piece is positioned between the first pawl and the first rotary table, and the first pawl is in one-way meshing connection with the first ratchet.
Preferably, the graphene conductive film processing device comprises a baffle, a sliding block and a second elastic piece; the sliding block is in sliding connection with the blanking groove, and a first guide groove is formed in the sliding block; one end of the baffle is in sliding connection with the outlet of the blanking groove, the other end of the baffle is provided with a first guide pin which is in sliding connection with the first guide groove and can drive the baffle to reciprocate relative to the outlet of the blanking groove so as to control the opening and closing of the outlet of the blanking groove; the second elastic piece is positioned between the blanking groove and the sliding block to drive the sliding block to move to a position for closing an outlet of the blanking groove by driving the baffle to move through the first guide groove; the blanking hopper can form contact with the sliding block when moving to the terminal position of the blanking groove, and overcomes the second elastic piece to drive the sliding block to move together, so that the baffle plate moves to a position for opening the outlet of the blanking groove.
Preferably, the graphene conductive film processing device comprises a piston; the piston is in sliding connection with the blanking groove and can extend into the blanking groove to push out the coating solution in the blanking groove to the glass plate.
Preferably, the graphene conductive film processing device comprises a first telescopic rod, a second rack, a second gear, a second rotary table, a pulley, a second pawl, a third elastic piece and a pull rope; the blanking groove is provided with a second guide groove which is L-shaped, one end of the second guide groove is arranged along the vertical direction, and the other end of the second guide groove is arranged along the horizontal direction; one end of the piston is arranged along the vertical direction and can be inserted into the blanking groove, a second rack along the vertical direction is arranged at the other end of the piston, a second guide pin is arranged between two ends of the piston, and the second guide pin is connected in the second guide groove in a sliding manner; one end of the first telescopic rod is rotationally connected with the blanking groove, the other end of the first telescopic rod is rotationally connected with the piston, the second gear is rotationally connected with the blanking groove and can be in meshed connection with the second rack, a second ratchet is arranged on the inner circumference of the second gear, the second rotary table is positioned in the second gear, a second pawl is arranged on the outer circumference of the second rotary table, and the third elastic piece is positioned between the second pawl and the second rotary table and is in unidirectional meshed connection with the second ratchet; the pulley is coaxially and fixedly connected with the second turntable, one end of the pull rope is wound on the pulley, and the other end of the pull rope is connected with the bracket;
the first telescopic rod can drive the second guide pin of the piston to move along the second guide groove in the horizontal direction so as to enable the piston to move to the blanking groove, and move downwards along the second guide groove in the vertical direction so as to enable the piston to be inserted into the blanking groove and push the coating solution to be discharged, meanwhile, the second rack is meshed with the second gear, the second turntable is driven to rotate through the second gear and the second pawl, the pulley is driven to wind the pull rope, and the blanking groove is driven to move relative to the glass plate.
Preferably, the graphene conductive film processing device comprises a second telescopic rod; the second telescopic rod is arranged in the horizontal direction, one end of the second telescopic rod is fixedly connected with the support, and the other end of the second telescopic rod can extend out to be in contact with the blanking groove so as to drive the blanking groove to reversely reset.
Preferably, the graphene conductive film processing equipment comprises a second motor and a polishing disc; the second motor is arranged on the blanking hopper, and the polishing disc is positioned above the glass plate and is connected with an output shaft of the second motor;
the preparation method of the graphene conductive film further comprises the following steps of S4, removing lines: and after the coating solution in the blanking groove is discharged in the step S3, controlling the blanking hopper to move to reset relative to the blanking groove, and simultaneously controlling the second motor to rotate so as to drive the polishing disc to perform polishing and pattern removing operation on the coating solution coated on the glass plate.
Preferably, the first motor and the second motor are the same motor and comprise two output shafts, one output shaft is connected with the first gear, and the other output shaft is connected with the polishing disc.
Preferably, the graphene conductive film processing device comprises a conveyor belt; the conveyer belt with the leg joint for along the horizontal direction tiling place glass board.
The preparation method of the graphene conductive film is used for preparing the graphene conductive film, and has the following beneficial technical effects:
1. according to the preparation method of the graphene conductive film, the discharging hopper with the smaller outlet is arranged, the coating solution is firstly output to the discharging hopper by utilizing the movement of the discharging hopper relative to the discharging hopper, and then the coating solution is uniformly coated on the surface of the glass plate through the discharging hopper with the larger outlet by matching with the movement of the discharging hopper relative to the glass plate, so that the problem of uneven coating caused by poor flowability of the coating solution is avoided, the coating effect is improved, and the quality of the prepared graphene conductive film is ensured.
2. According to the preparation method of the graphene conductive film, the rack is arranged on the blanking groove, and the pawl and the ratchet are arranged between the first gear and the first rotating disc, so that the blanking screw rod can be driven by the first motor to rotate unidirectionally, and in the process that the blanking hopper is driven by the first motor to reciprocate relative to the blanking groove, the intermittent blanking operation of the coating solution driven by the blanking screw rod is not influenced, the output uniformity of the coating solution is further ensured, and the coating quality is improved.
3. According to the preparation method of the graphene conductive film, the sliding block is arranged at the end part of the blanking groove, the second elastic piece is arranged between the blanking groove and the sliding block, the sliding block is driven to overcome the movement of the second elastic piece and the reverse movement of the sliding block is driven by the second elastic piece when the blanking hopper moves to the end part of the blanking groove, the reciprocating movement of the baffle plate relative to the outlet of the blanking groove can be directly controlled by virtue of the first guide groove and the first guide pin, the opening and closing control of the outlet of the blanking groove is realized, an unnecessary control structure is not needed, and the control convenience is realized.
4. According to the preparation method of the graphene conductive film, the first telescopic rod is used for controlling the piston to reciprocate along the second guide groove, so that the piston is driven to output the coating solution to the glass plate, and meanwhile, the movement of the discharging groove relative to the glass plate is controlled, the uniform coating operation of the whole glass plate is achieved, the structural design is simplified, and the convenience of operation control is improved.
5. According to the preparation method of the graphene conductive film, the pawl and the ratchet are arranged between the second gear and the second rotary table, so that the blanking groove is stopped corresponding to the glass plate in the intermittent coating process of the glass plate by driving the piston to reciprocate by the first telescopic rod, and the uniform coating operation of the whole glass plate is realized.
6. According to the preparation method of the graphene conductive film, the polishing disc driven by the motor is arranged, so that after coating is completed, the polishing disc is used for polishing the surface of the coating solution, lines on the surface of the coating solution are eliminated, and the quality of the graphene conductive film is further improved.
Drawings
Fig. 1 is a schematic cross-sectional structure of a graphene conductive film processing apparatus according to the present embodiment;
FIG. 2 is an enlarged schematic view of a partial structure at I in FIG. 1;
FIG. 3 is a schematic view of the structure along the direction A-A in FIG. 1;
fig. 4 is a schematic diagram showing an internal cross-sectional structure of a discharge hopper in the graphene conductive film processing apparatus of the present embodiment;
fig. 5 is a schematic view of the structure along the direction B-B in fig. 4.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and the examples.
Referring to fig. 1 to 5, the embodiment discloses a graphene conductive film processing device for preparing a graphene conductive film, which comprises a bracket 1, a blanking groove 2, a blanking hopper 3 and a blanking screw 4. The support 1 is placed on the ground for horizontally tiling and placing the glass plate 5, the length direction of the glass plate 5 is along the left-right direction shown in fig. 1, the blanking hopper 2 is located above the glass plate 5 and is in sliding connection with the support 1 along the left-right direction shown in fig. 1, namely along the length direction of the glass plate 5, the blanking hopper 3 is located above the blanking hopper 2 and is in sliding connection with the blanking hopper 2, namely the blanking hopper 3 is in sliding connection along the width direction of the glass plate 5, the blanking hopper 3 adopts a closing-in structural design with a smaller outlet, the outlet of the blanking hopper 3 is communicated with the inlet of the blanking hopper 2, the blanking screw 4 is located in the blanking hopper 3 and extends to the outlet position of the blanking hopper 3, and the coating solution in the blanking hopper 3 is uniformly and continuously conveyed to the outlet position of the blanking hopper 3.
When the graphene conductive film processing equipment of the embodiment is used for preparing the graphene conductive film, firstly, a glass plate is tiled on a support, a coating solution is placed in a blanking hopper, then, the blanking hopper is controlled to move relative to a blanking groove in the process of controlling the rotation of a blanking screw, the coating solution in the blanking groove is uniformly injected into the blanking groove, then, the blanking groove is controlled to move along the length direction of the glass plate, the coating solution in the blanking groove is discharged onto the glass plate and uniformly coated on the glass plate, and the coating operation is completed.
In this embodiment, the width of the lower trough corresponds to the width of the glass plate, so that the coating solution can be uniformly coated on the surface of the glass plate in the process of controlling the lower trough to move along the length direction of the glass plate. In addition, when the length of the glass plate is large, that is, when the coating solution contained in the discharging groove cannot finish the coating operation on the surface of the whole glass plate at one time, the movement of the discharging groove is stopped after the discharging of the coating solution in the discharging groove is finished, the discharging hopper is controlled to move relative to the discharging groove again, the discharging screw is controlled to rotate again, and the coating operation on the glass plate is continued after the coating solution is injected into the discharging groove again.
As shown in fig. 1 and 4, in the graphene conductive film processing apparatus of the present embodiment, a first motor 6, a first gear 7, and a first rack 8 are further provided. The first motor 6 is fixedly arranged on the lower hopper 3, the first gear 7 is sleeved and fixed on an output shaft of the first motor 6, the first rack 8 is fixed on the lower trough 2 along the width direction of the glass plate 5, and the first gear 7 is meshed and connected with the first rack 8.
At this time, by controlling the rotation of the first motor, the first gear and the first rack can be engaged and connected, and the discharging hopper is driven to reciprocate relative to the discharging groove, so that the coating solution in the discharging hopper can be uniformly injected into the discharging groove.
Further, in the graphene conductive film processing apparatus of the present embodiment, the apparatus further includes a first rotating disc 9, a first pawl 10 and a first elastic member 11, and the inner circumferential surface of the first gear 7 is provided with a first ratchet 12, the first rotating disc 9 is fixedly connected coaxially with one end of the blanking screw 4 extending to the outside of the blanking hopper 3 and located inside the first gear 7, the outer circumferential surface of the first rotating disc 9 is provided with the first pawl 10, and the first elastic member 11 adopts a spring plate structure and is located between the first pawl 10 and the first rotating disc 9, so that unidirectional meshing connection is formed between the first pawl 10 and the first ratchet 12.
At the moment, when the first motor rotates positively, the discharging hopper is driven to move relative to the discharging groove through the first gear and the first rack, and meanwhile, the discharging screw is driven to rotate through the meshing connection between the first pawl and the first ratchet, so that the coating solution in the discharging hopper is uniformly injected into the discharging groove; on the contrary, when the first motor rotates reversely, the discharging hopper is driven by the first gear and the first rack to reset reversely relative to the discharging groove, the first ratchet drives the first pawl to overcome the acting force of the first elastic piece so that the first gear idles relative to the first rotary table, and accordingly the discharging screw is kept stationary, and intermittent injection of coating solution into the discharging groove is achieved.
As shown in fig. 1 and 3, in the graphene conductive film processing apparatus of the present embodiment, a baffle 13, a slider 14, and a second elastic member 15 are further included. The slide 14 is slidingly connected with the blanking groove 2, and an inclined first guide groove 16 is arranged on the slide 14. One end of the baffle 13 is slidably connected with the outlet of the blanking groove 2 in an inserting manner, the other end of the baffle 13 is provided with a first guide pin 17, and the first guide pin 17 is slidably connected in the first guide groove 16 and can drive the baffle 13 to reciprocate relative to the outlet of the blanking groove 2 so as to control the opening and closing of the outlet of the blanking groove 2. The second elastic piece 15 is positioned between the blanking groove 2 and the sliding block 14 by adopting a spiral spring, so as to drive the sliding block 14 to move to a position where the baffle 13 is driven by the first guide groove 16 to move to form a closed state for the outlet of the blanking groove 2. When the discharging hopper 3 moves to the terminal position of the discharging chute 2, the discharging hopper can be in contact with the sliding block 14 and overcomes the second elastic piece 15 to drive the sliding block 14 to move together, so that the baffle 13 is driven by the first guide groove 16 to move to a position for opening the outlet of the discharging chute 2, namely, the position shown in fig. 3.
At this time, the baffle is arranged at the outlet position of the blanking groove, and the slide block and the second elastic piece are utilized to control the reciprocating movement of the baffle relative to the blanking groove, namely, the slide block is driven to move relative to the blanking groove under the action of the second elastic piece, so that the first guide pin is driven to move through the first guide groove on the slide block, and is positioned at the left upper end position of the first guide groove, so that the baffle is driven to move to the position for keeping the outlet of the blanking groove closed, otherwise, when the blanking hopper moves to the terminal position of the blanking groove and contacts with the slide block, the slide block can be driven to continuously move against the action of the second elastic piece, so that the first guide pin moves to the position shown in fig. 2 relative to the first guide groove, namely, the first guide pin is positioned at the right lower end position of the first guide groove, and then the baffle is driven to move to the outlet position for opening the blanking groove. Therefore, the outlet of the blanking groove can be automatically opened after the coating solution is injected into the blanking groove, so that the coating solution is simultaneously output along the width direction of the whole glass plate, and the outlet of the blanking groove is automatically kept closed in the process of injecting the coating solution into the blanking groove, thereby improving the automation of the coating operation and the uniform effect of coating.
As shown in fig. 1 and 2 in combination, the graphene conductive film processing apparatus of the present embodiment includes a piston 18. The piston 18 is slidably connected to the discharge chute 2, is capable of moving to the discharge chute 2 in a horizontal direction, and extends into the discharge chute 2 in a vertical direction, so that the coating solution in the discharge chute 2 is pushed out of the discharge chute 2 to coat the glass plate.
Specifically, the graphene conductive film processing apparatus further includes a first telescopic rod 19, a second rack 20, a second gear 21, a second turntable 22, a pulley 23, a second pawl 24, a third elastic member 25, and a pull rope 26. Wherein, be equipped with second guide way 27 on the unloading groove 2, second guide way 27 is the L type, and one end sets up along the horizontal direction as the horizontal segment, and the other end sets up along the vertical direction as vertical section. One end of the piston 18 is arranged along the vertical direction and can be inserted into the blanking groove 2, the other end of the piston 18 is provided with a second rack 20 along the vertical direction, a second guide pin 28 is arranged between the two ends of the piston 18, and the second guide pin 28 is slidably connected in the second guide groove 27. One end of the first telescopic rod 19 is rotationally connected with the blanking groove 2, the other end of the first telescopic rod is rotationally connected with the piston 18, the second gear 21 is rotationally connected with the blanking groove 2 and can be in meshed connection with the second rack 20, the second ratchet 29 is arranged on the inner circumference of the second gear 21, the second rotary table 22 is located inside the second gear 21, the second pawl 24 is arranged on the outer circumference of the second rotary table 22, the third elastic piece 25 is of a spring plate structure and is located between the second pawl 24 and the second rotary table 22, and the second pawl 24 and the second ratchet 29 are in unidirectional meshed connection. Simultaneously, pulley 23 and second carousel 22 coaxial fixed connection, the one end of stay cord 26 twines on pulley 23, and the other end is connected with support 1 after passing glass board 5 along the horizontal direction.
At this time, the telescopic action of the first telescopic rod 19 can drive the second guide pin 28 on the piston 18 to move horizontally or vertically along the second guide groove 27, when the second guide pin 28 moves horizontally along the horizontal section of the second guide groove 27, the piston 18 can move to the blanking groove 2 or away from the blanking groove 2, and when the second guide pin 28 rotates to move vertically along the vertical section of the second guide groove 27, the piston 18 can extend into the blanking groove 2 to push out the coating solution so as to coat the surface of the glass plate 5. When the second guide pin 28 enters the vertical section of the second guide groove 27, the second rack 20 is in meshed connection with the second gear 21, and the piston 18 drives the second turntable 22 to synchronously rotate through the second gear 21 and the second pawl 24 in the process of extending into the blanking groove 2, so that the pulley 23 is driven to wind the pull rope 26, the blanking groove 2 starts to move horizontally relative to the bracket 1, namely, the blanking groove 2 is driven to move relative to the glass plate 5, the downward moving distance of the piston 18 corresponds to the winding distance of the pulley 23 to the pull rope 26, so that the surface of the glass plate 5 is uniformly coated with the coating solution, otherwise, the second rack 20 drives the second gear 21 to idle in the process of moving the piston 18 upwards to move out of the blanking groove 2, so that the position of the blanking groove 2 is kept motionless, and the continuous coating operation of the glass plate 5 is realized.
As shown in fig. 1, in the graphene conductive film processing apparatus of the present embodiment, a second telescopic rod 30 is further provided. The second telescopic rod 30 is arranged along the horizontal direction, one end of the second telescopic rod is fixedly connected with the bracket 1, and the other end of the second telescopic rod can extend out to be in contact with the blanking groove 2 so as to drive the blanking groove 2 to perform reverse reset movement. At this time, after the second rack 20 is released from the engagement with the second gear 21, the entire blanking groove 2 is pushed to move reversely by controlling the extending operation of the second telescopic rod 30, and the pulley 23 is rotated to release the pull rope 26, thereby realizing the resetting operation of the blanking groove 2.
Of course, in other embodiments, other ways of independently controlling the reciprocating movement of the lower trough relative to the support may be adopted, for example, the second telescopic rod is directly connected with the lower trough, and the reciprocating movement of the second telescopic rod is used to directly control the reciprocating movement of the lower trough relative to the support.
In addition, two second guide grooves are formed in the blanking groove of the embodiment, and two corresponding second guide pins are arranged on the piston, so that the stability and the accuracy of reciprocating movement of the piston relative to the blanking groove can be improved, and the coating effect is improved.
As shown in fig. 1, in the graphene conductive film processing apparatus of the present embodiment, a polishing plate 31 is further provided, and the first motor 6 adopts a biaxial motor. One output shaft of the first motor 6 is connected with the first gear 7, the other output shaft is connected with the polishing disc 31 through two belt pulleys 32 and a transmission belt 33, and the polishing disc 31 is positioned above the glass plate 5.
At this time, after finishing the coating operation of glass board surface, through the reverse rotation of control first motor, idle running is carried out for first carousel at first gear, keeps under the condition that the unloading screw rod does not rotate, just can utilize the belt pulley to drive the dish of polishing and carry out the operation of polishing and removing the line to the coating solution, improves the quality of the electrically conductive membrane of graphite alkene of preparing.
In the embodiment, the double-shaft motor is in transmission connection with the blanking screw in a pawl and ratchet mode, so that one motor can finish the coating solution output to the blanking groove and drive the polishing disc to perform polishing and de-wrinkling operation. Of course, in other embodiments, two independent motors may be used, that is, a second motor is further provided to drive the polishing disc to perform polishing and pattern removing operations.
As shown in fig. 1, in the graphene conductive film processing apparatus of the present embodiment, a conveyor belt 34 is further provided. The conveyer belt 34 is arranged on the support 1 along the horizontal direction, is used for laying the glass plate 5 along the horizontal direction, and can convey and transfer the glass plate 5, so that the efficiency of preparing the graphene conductive film is improved.
As shown in fig. 1 to 5, the method for preparing the graphene conductive film by using the graphene conductive film processing apparatus of the present embodiment specifically includes the following steps:
step S1, feeding: the coating solution was placed into a discharge hopper and the glass plate was laid flat on a support in the horizontal direction.
Specifically, firstly, the prepared coating solution is put into the discharging hopper 3, then, the glass plate 5 is horizontally placed on the conveyor 34 along the length direction thereof, the conveyor 34 is started to convey the glass plate 5 to the coating position, the rotation of the conveyor 34 is stopped, and the feeding operation is completed.
Step S2, feeding a coating solution into a tank: the blanking hopper is controlled to move along the blanking groove, the blanking screw is controlled to rotate, and the coating solution in the blanking hopper is continuously and uniformly injected into the blanking groove.
The method comprises the following steps: the first motor 6 is controlled to drive the first gear 7 to rotate, the first ratchet 12 and the first pawl 10 are utilized to drive the first rotating disc 9 to synchronously rotate, the blanking screw 4 is driven to rotate, the coating solution in the blanking hopper 3 is injected into the blanking groove 2 through the blanking screw 4, meanwhile, the first hopper 2 is driven to move relative to the blanking groove 2 by utilizing the meshing connection between the first gear 7 and the first rack 8, so that the coating solution uniformly enters the blanking groove 2, when the blanking hopper 3 moves to the terminal position of the blanking groove 2, the blanking hopper 3 contacts with the sliding block 14 and drives the sliding block 14 to move against the acting force of the second elastic piece 15, so that the first guide pin 17 moves relative to the first guide groove 16, the baffle 13 moves relative to the blanking groove 2 to the opening position of the outlet of the blanking groove 2, the rotation of the first motor 6 is stopped, and the coating solution feeding operation is completed.
Step S3, coating: and controlling the discharge chute to move relative to the bracket, and discharging the coating solution in the discharge chute and coating the coating solution on the glass plate.
Specifically, after the operation of feeding the coating solution into the trough in step S2 is completed, the lower hopper 3 is moved to the side position of the lower trough 2, i.e. the position right above the lower trough 2 is yielded, at this time, the first telescopic rod 19 is controlled to perform an extending action, the piston 18 is driven to move to the position right above the lower trough 2 along the horizontal section of the second guiding trough 27 by the second guiding pin 28, and the second rack 20 is engaged with the second gear 21, the first telescopic rod 19 is continuously controlled to perform an extending action, so that the second guiding pin 28 enters the vertical section of the second guiding trough 27 and moves along the vertical section of the second guiding trough 27, at this time, on one hand, the piston 18 extends into the lower trough 2 to push the coating solution in the lower trough 2 out onto the glass plate 5, on the other hand, the second rack 20 drives the second gear 21 to rotate, and the second rotary table 22 is driven to perform a synchronous rotation by the second ratchet 29 and the second pawl 24, so as to perform a rolling operation on the pull rope 26, so as to drive the lower trough 2 to perform a synchronous movement relative to the glass plate 5, and uniformly coat the coating solution on the surface of the glass plate 5. When the piston 18 moves to the bottom of the blanking groove 2, the first telescopic rod 19 is controlled to perform contraction action to drive the piston 18 to move out of the blanking groove 2 and move to a position far away from the blanking groove 2 along the horizontal direction, and in the process, the second rack 20 drives the second gear 21 to idle, namely, the blanking groove 2 stops moving relative to the glass plate 5.
Step S4, removing lines: and after the coating solution in the blanking groove is discharged in the step S3, controlling the blanking hopper to move to reset relative to the blanking groove, and simultaneously controlling the second motor to rotate so as to drive the polishing disc to perform polishing and pattern removing operation on the coating solution coated on the glass plate.
Specifically, after the operation in step S3 is completed, the first motor 6 is controlled to reversely rotate, on one hand, the first gear 7 is driven to reversely move along the first rack 8, and the discharging hopper 3 is driven to move to a reset position relative to the discharging chute 2, in the process, the first gear 7 idles relative to the first rotary table 9, so that the discharging screw 4 keeps stopping rotating, on the other hand, the pulley 32 drives the polishing disc 31 to rotate, thereby polishing the coating solution after coating, polishing the grains, leveling the surface of the coating solution, and completing the stripping operation.
Step S5, resetting: after the lower trough moves relative to the bracket to the whole glass plate and is coated with the coating solution, the lower trough is controlled to reversely move relative to the bracket to the initial position.
Specifically, the operations of step S2 to step S4 are repeated until the entire glass plate 5 is coated with the coating solution. After the coating operation is completed, the first telescopic rod 19 is controlled to retract and reset, so that the second rack 20 is in meshed connection with the second gear 21, the second telescopic rod 30 is controlled to extend so as to push the blanking groove 2 to move reversely, the pulley 23 is rotated to release the pull rope 26, and the resetting operation of the blanking groove 2 is realized.
Step S6, blanking: and (3) taking the glass plate coated with the coating solution off the bracket to finish the preparation of the graphene conductive film. Specifically, the conveyor belt 34 is started again to rotate, the glass plate 5 with coating and pattern removing operations is driven to move, then the glass plate 5 is manually taken down, the subsequent process is carried out, and the preparation operation of the graphene conductive film is completed.
Claims (5)
1. The preparation method of the graphene conductive film is characterized in that graphene conductive film processing equipment is adopted for carrying out preparation operation of the graphene conductive film, and comprises a bracket, a blanking groove, a blanking hopper and a blanking screw; the support is used for horizontally tiling and placing the glass plate, the blanking groove is positioned above the glass plate and is in sliding connection with the support along the horizontal direction, the blanking hopper is positioned above the blanking groove and is in sliding connection with the blanking groove, the outlet of the blanking hopper is communicated with the inlet of the blanking groove, and the blanking screw is positioned in the blanking hopper and extends to the outlet position of the blanking hopper;
the preparation method of the graphene conductive film specifically comprises the following steps:
step S1, feeding: placing the coating solution into the discharging hopper, and horizontally spreading the glass plate on the bracket;
step S2, feeding a coating solution into a tank: controlling the blanking hopper to move along the blanking groove, controlling the blanking screw to rotate, and continuously and uniformly injecting the coating solution in the blanking hopper into the blanking groove;
step S3, coating: controlling the discharging groove to move relative to the bracket, discharging the coating solution in the discharging groove and coating the coating solution on a glass plate;
step S5, resetting: after the blanking groove moves to the whole glass plate relative to the bracket and is coated with the coating solution, the blanking groove is controlled to reversely move to an initial position relative to the bracket;
step S6, blanking: taking down the glass plate coated with the coating solution from the bracket, and carrying out subsequent procedures to finish the preparation of the graphene conductive film;
the graphene conductive film processing equipment comprises a first motor, a first gear and a first rack; the first motor is arranged on the blanking hopper, the first gear is sleeved and fixed on an output shaft of the first motor, the first rack is fixed on the blanking groove, and the first gear is in meshed connection with the first rack;
the graphene conductive film processing equipment comprises a first rotary table, a first pawl and a first elastic piece; the inner circumferential surface of the first gear is provided with a first ratchet, the first rotary table is coaxially and fixedly connected with the blanking screw rod and is positioned in the first gear, the outer circumferential surface of the first rotary table is provided with a first pawl, the first elastic piece is positioned between the first pawl and the first rotary table, and the first pawl is in unidirectional meshing connection with the first ratchet;
the graphene conductive film processing equipment comprises a baffle, a sliding block and a second elastic piece; the sliding block is in sliding connection with the blanking groove, and a first guide groove is formed in the sliding block; one end of the baffle is in sliding connection with the outlet of the blanking groove, the other end of the baffle is provided with a first guide pin which is in sliding connection with the first guide groove and can drive the baffle to reciprocate relative to the outlet of the blanking groove so as to control the opening and closing of the outlet of the blanking groove; the second elastic piece is positioned between the blanking groove and the sliding block to drive the sliding block to move to a position for closing an outlet of the blanking groove by driving the baffle to move through the first guide groove; the blanking hopper can be contacted with the sliding block when moving to the terminal position of the blanking groove, and overcomes the second elastic piece to drive the sliding block to move together, so that the baffle plate moves to a position for opening an outlet of the blanking groove;
the graphene conductive film processing equipment comprises a piston; the piston is in sliding connection with the blanking groove and can extend into the blanking groove to push out the coating solution in the blanking groove to the glass plate;
the graphene conductive film processing equipment comprises a first telescopic rod, a second rack, a second gear, a second turntable, a pulley, a second pawl, a third elastic piece and a pull rope; the blanking groove is provided with a second guide groove which is L-shaped, one end of the second guide groove is arranged along the vertical direction, and the other end of the second guide groove is arranged along the horizontal direction; one end of the piston is arranged along the vertical direction and can be inserted into the blanking groove, a second rack along the vertical direction is arranged at the other end of the piston, a second guide pin is arranged between two ends of the piston, and the second guide pin is connected in the second guide groove in a sliding manner; one end of the first telescopic rod is rotationally connected with the blanking groove, the other end of the first telescopic rod is rotationally connected with the piston, the second gear is rotationally connected with the blanking groove and can be in meshed connection with the second rack, a second ratchet is arranged on the inner circumference of the second gear, the second rotary table is positioned in the second gear, a second pawl is arranged on the outer circumference of the second rotary table, and the third elastic piece is positioned between the second pawl and the second rotary table and is in unidirectional meshed connection with the second ratchet; the pulley is coaxially and fixedly connected with the second turntable, one end of the pull rope is wound on the pulley, and the other end of the pull rope is connected with the bracket;
the first telescopic rod can drive the second guide pin of the piston to move along the second guide groove in the horizontal direction so as to enable the piston to move to the blanking groove, and move downwards along the second guide groove in the vertical direction so as to enable the piston to be inserted into the blanking groove and push the coating solution to be discharged, meanwhile, the second rack is meshed with the second gear, the second turntable is driven to rotate through the second gear and the second pawl, the pulley is driven to wind the pull rope, and the blanking groove is driven to move relative to the glass plate.
2. The method for producing a graphene conductive film according to claim 1, wherein the graphene conductive film processing apparatus includes a second telescopic rod; the second telescopic rod is arranged in the horizontal direction, one end of the second telescopic rod is fixedly connected with the support, and the other end of the second telescopic rod can extend out to be in contact with the blanking groove so as to drive the blanking groove to reversely reset.
3. The method for manufacturing a graphene conductive film according to claim 2, wherein the graphene conductive film processing apparatus includes a second motor and a polishing plate; the second motor is arranged on the blanking hopper, and the polishing disc is positioned above the glass plate and is connected with an output shaft of the second motor;
the preparation method of the graphene conductive film further comprises the following steps of S4, removing lines: and after the coating solution in the blanking groove is discharged in the step S3, controlling the blanking hopper to move to reset relative to the blanking groove, and simultaneously controlling the second motor to rotate so as to drive the polishing disc to perform polishing and pattern removing operation on the coating solution coated on the glass plate.
4. The method for producing a graphene conductive film according to claim 3, wherein the first motor and the second motor are the same motor and include two output shafts, one output shaft is connected with the first gear, and the other output shaft is connected with the polishing plate.
5. The method for producing a graphene conductive film according to any one of claims 1 to 4, wherein the graphene conductive film processing apparatus comprises a conveyor belt; the conveyer belt with the leg joint for along the horizontal direction tiling place glass board.
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