CN112743733A - Laser heating material increase micro-nano rolling forming system and method - Google Patents
Laser heating material increase micro-nano rolling forming system and method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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- Battery Electrode And Active Subsutance (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a laser heating material increase micro-nano rolling forming system, which comprises a base material unreeled by an unreeling roller, a first traction roller, a tension roller, a deviation correcting roller, a rolling and impressing module, a surface processor, a powder supply device, an auxiliary compression roller, a material increase rolling module, a cooling roller and a second traction roller which are sequentially arranged on a rack and used for the base material to sequentially pass through, a powder supply device which is arranged between the surface processor and the powder control device and used for dropping powder to the base material and a wind-up roll used for winding the base material, heating the substrate by a first laser of the rolling and impressing module to form a fine structure characteristic on the surface of the substrate, under the action of the auxiliary pressing roller, the powder material on the base material gradually fills the rolling gap of the additive rolling module, is heated and melted by the second laser, is rolled and formed, is embedded with the base material, and is cooled and demoulded by the cooling roller to form the micro-nano structure array. The invention adopts laser non-contact heating without heating rollers, and has good controllability of thermal action and high precision of micro-nano structure.
Description
Technical Field
The invention relates to the technical field of micro-nano manufacturing equipment, in particular to a laser heating material-adding micro-nano rolling forming system and method.
Background
In recent years, as new energy and energy saving technologies, new media and information technologies have been rapidly developed, polymer thin film devices with functional surface microstructures have attracted much attention in the industry due to the advantages of low material cost, small thickness tolerance, smooth surface, and the like. The thin film device mainly comprises a brightness enhancement film, a diffusion film, a reflection film, an anchor film, an antireflection film and the like. Besides being applied to industries such as liquid crystal displays, flexible displays, electronic paper and the like, the application range of polymer thin film devices is continuously expanding, such as the fields of thin film solar, electronic components and the like which tend to be developed in circuit integration and planarization. Although the polymer film surface microstructure is different due to different functions, the characteristic dimension of the polymer film surface microstructure is generally in a micro-nano scale, and the processing precision of the surface microstructure directly influences the performance and the working efficiency of the optical film, so that a high-efficiency and high-precision process method becomes the key for manufacturing and processing the film surface microstructure.
At present, the preparation of the functional surface fine structure mainly comprises two methods, one is a photoetching process, and the other is an imprinting process. The photoetching process is mainly used for processing a required micro-nano structure array on a substrate material or a photoresist through physical bombardment or chemical etching of various high-energy particle beams, such as an electron beam photoetching process, an atomic beam photoetching process, laser interference photoetching, a colloid photoetching process and the like. The embossing process mainly comprises hot embossing, ultraviolet curing embossing and the like. The hot stamping process is to heat the solid polymer film material to a molten state under the conditions of high temperature and high pressure and press the material into a die cavity, the processing speed cannot be too fast, the material has low mold filling rate due to the rebound of the material in the demolding stage, and the defects of high process requirement, low processing efficiency and the like exist. The ultraviolet curing imprinting is to extrude liquid resin material into a mold cavity under normal temperature and pressure and obtain a micro-nano structure array through ultraviolet illumination curing, and the liquid material has very good fluidity, so the process has the characteristics of high processing efficiency, high forming precision and the like, but the preparation of the liquid resin material needs a large amount of formula solvent, and the volatilization of the solvent can cause environmental pollution in the ultraviolet curing imprinting process.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to design a laser heating material increase micro-nano rolling forming system and method, which can realize efficient, high-precision and low-cost continuous manufacturing of a large-area functional surface micro-structure, reduce rebound, improve the material filling rate, save energy and protect environment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a laser heating material increase micro-nano rolling forming system comprises a base material unreeled through an unreeling roller, a first traction roller, a tension roller, a deviation correction roller, a rolling and impressing module, a surface processor, a powder supply device, an auxiliary compression roller, a material increase rolling module, a cooling roller and a second traction roller which are sequentially arranged on a rack and used for the base material to sequentially pass through, a powder supply device which is positioned between the surface processor and the powder control device and used for powder falling of the base material, and a reeling roller used for reeling the base material, wherein the unreeling roller, the powder supply device and the reeling roller are all arranged on the rack;
the rolling and imprinting module comprises a first mold roller and a first supporting roller which are arranged up and down and keep a rolling gap, the first supporting roller and/or the first mold roller are made of light-transmitting materials, a first laser is arranged right below the first supporting roller and/or right above the first mold roller, a substrate between the first supporting roller and the first mold roller is heated through the first laser, the first laser is vertical to the horizontal plane of the substrate, and the first mold roller is used for imprinting the surface of the substrate to form a fine structure characteristic;
the material adding rolling module comprises a second mold roller and a second supporting roller which are arranged from top to bottom and keep a rolling gap, the second mold roller and/or the second supporting roller are made of light-transmitting materials, a second laser is arranged right above the second mold roller and/or right below the second supporting roller, a base material between the second mold roller and the second supporting roller is heated through the second laser, the second laser is perpendicular to the horizontal plane where the base material is located, and the base material is in a surface micro-nano structure under the restraint of a surface micro-nano structure die cavity of the second mold roller.
As a further improvement of the invention, the first laser and the second laser both adopt continuous or pulse high-power lasers.
As a further improvement of the invention, the powder control device comprises an upper powder control roller and a lower powder control roller which are arranged from top to bottom, and a rolling gap is formed between the upper powder control roller and the lower powder control roller.
As a further improvement of the present invention, the surface treater is an electrostatic treater, a corona treater or a plasma treater.
As a further improvement of the invention, the substrate is an optical material film, the powder material provided by the powder supply device is optical material powder, and the melting point of the optical material powder is higher than that of the substrate.
The invention also provides a method for carrying out micro-nano rolling processing by the additive micro-nano rolling forming system, which comprises the following steps: comprises the following steps of (a) carrying out,
step one, an unreeling stage;
placing the coiled base material on an unwinding roller, performing traction unwinding through a first traction roller, adjusting the tensioning degree through a tension roller, and correcting deviation through a deviation correcting roller;
step two, a laser heating micro rolling and impressing stage;
the substrate enters a rolling gap of the rolling and impressing module, is heated by a first laser, and is heated, rolled and impressed by a first mold roller and a first supporting roller in the rolling and impressing module, so that a fine structure characteristic is formed on the surface of the substrate;
step three, surface pretreatment;
the base material enters a surface treatment module, and the surface of the base material is treated by a surface processor;
step four, a powder laying and filling stage;
the base material passes through the lower part of the powder supply device, the powder supply device is used for dropping powder, the quantity of the powder material dropped on the base material is controlled by the powder control device and then enters a rolling gap formed between the auxiliary pressing roller and the second die roller, and under the action of the auxiliary pressing roller, the powder material on the base material gradually fills the micro-nano structure die cavity on the second die roller;
step five, laser heating material increase micro-nano rolling forming stage;
powder materials filled in the micro-nano structure die cavity on the second die roller enter the rolling gap of the material increase rolling module along with the base material, are heated and melted by the second laser, so that the molten powder materials are embedded and combined with the base material, and form a surface micro-nano structure under the constraint of the micro-nano structure die cavity on the surface of the second die roller;
step six, cooling and demolding;
the material formed by the rolling of the additive rolling module enters a rolling gap formed between a second die roller and a cooling roller, is coated on the cooling roller, and is subjected to shape-preserving cooling demoulding;
step seven, a winding stage;
and the cooled base material passes through a second traction roller and then is wound on a winding roller.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts laser non-contact heating, does not need to heat a mould or a roller, has concentrated heat, good controllability of thermal action, high heating speed, high heating efficiency, no environmental pollution during heating, energy conservation and consumption reduction.
(2) The invention adopts additive forming, and has the advantages of small material deformation, small rebound after demoulding, high mold filling rate and high micro-nano structure precision.
(3) The invention adopts powder filling, has good fluidity, continuous process and smaller roll pressure, is easy to realize large-area processing, does not use organic solvent in the processing process, and is energy-saving and environment-friendly.
(4) According to the invention, the rolling and impressing module is arranged before the additive micro-nano rolling forming stage, so that the material interfaces are combined in an embedded manner, and the interface combination is firmer and more reliable.
(5) The system has reasonable design, simple process, modular design and higher flexibility, and can realize large-area, low-cost, high-efficiency, high-quality and large-batch industrial production.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram according to embodiment 3 of the present invention;
FIG. 4 is a first schematic structural diagram according to embodiment 4 of the present invention;
FIG. 5 is a second structural diagram in embodiment 4 of the present invention;
FIG. 6 is a third schematic structural view in example 4 of the present invention;
FIG. 7 is a schematic view of the rolling and embossing module according to the present invention;
fig. 8 is a schematic structural view of an additive rolling module according to the present invention.
In the drawings: 1-unwinding roller, 2-substrate, 3-first traction roller, 4-tension roller, 5-rectifying roller, 6-first supporting roller, 7-first die roller, 8-first laser, 9-surface processor, 10-powder supply device, 11-powder control device, 12-auxiliary pressing roller, 13-second laser, 14-second die roller, 15-cooling roller, 16-second traction roller, 17-winding roller, 18-second supporting roller and 19-powder material.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, 7, and 8, the embodiment relates to a laser heating material increase micro-nano rolling forming system, which comprises a rack, an unwinding roller 1, a first traction roller 3, a tension adjusting roller 4, a rectification roller 5, a rolling and stamping module, a surface processor 9, a powder supply device 10, a powder control device 11, an auxiliary pressing roller 12, a material increase rolling module, a cooling roller 15, a second traction roller 16, and a winding roller 17, wherein the modules are sequentially installed on the rack.
The unreeling roller 1 is used for placing a coiled substrate 2, the substrate 2 is an optical material film such as PET, PC, PMMA, PP or PVC and the like, the substrate is dragged and unreeled through the first traction roller 3, the tension roller 4 is used for adjusting the tensioning degree of the substrate 2, the deviation rectifying roller 5 is used for rectifying the deviation of the substrate 2, the substrate 2 is centered, and the powder supply device 10 is located between the surface processor 9 and the powder control device 11 and used for dropping powder on the substrate 2.
The roll-in imprinting module comprises a first mould roller 7 and a first supporting roller 6 which are sequentially arranged from top to bottom, wherein the first mould roller 7 and the second supporting roller 6 are both made of a light-transmitting material, a first laser 8 is respectively arranged at the upper end of the first mould roller 7 and the lower end of the first supporting roller 6, a roll-in gap is formed between the first mould roller 7 and the first supporting roller 6, the roll-in pressure is mainly controlled by adjusting the roll-in gap, the roll-in imprinting module utilizes the first lasers 8 arranged at the upper end and the lower end of a substrate 2 to respectively penetrate through the first mould roller 7 made of the light-transmitting material and the first supporting roller 6 made of the light-transmitting material to heat the substrate 2 on both sides, the heating temperature is between Tg and Tg +100 ℃, wherein, Tg is the glass transition temperature, the Tg of PMMA (polymethyl methacrylate) is 110 ℃, the Tg of PC (polycarbonate) is 150 ℃, roll-in imprinting simultaneously, so as to form micro structural features such as micro grooves or micro pits and the like on the upper surface of, for use in a subsequent additive rolling module.
The surface processor 9 processes the surface of the substrate 2 to increase the surface energy and improve the surface bonding force. The powder supply device 10 continuously supplies the required powder material 19 to the additive rolling module. The powder material provided by the powder supply device 10 is optical material powder such as PET, PC, PMMA, PP, PVC or EVA, and the melting point of the optical material powder is higher than that of the base material 2. The powder control device 11 comprises an upper powder control roller and a lower powder control roller which are arranged from top to bottom, a rolling gap is formed between the upper powder control roller and the lower powder control roller, and the quantity of the powder materials 19 used by the material increase rolling module is controlled through the rolling gap.
The material adding rolling module comprises a second mold roller 14 and a second supporting roller 18 which are arranged from top to bottom, the second mold roller 14 and the second supporting roller 18 are made of light-transmitting materials, a second laser 13 is arranged at the upper end of the second mold roller 14 and the lower end of the second supporting roller 18 respectively, a rolling gap is formed between the second mold roller 14 and the second supporting roller 18, the size of the roller pressure is mainly controlled through adjustment of the rolling gap, and the powder material 19 on the base material 2 is enabled to gradually fill the micro-nano structure die cavity on the second mold roller 14. The material adding rolling module utilizes a second laser 13 arranged at the upper end and the lower end of the substrate 2 to respectively pass through a second die roller 14 and a second supporting roller 18 to carry out double-sided heating on the powder material 19 filled in the surface micro-nano structure die cavity of the second die roller 14 on the substrate 2, so that the powder material is melted, the molten powder material 19 is combined with the surface of the substrate 2, and the substrate 2 is enabled to form a surface micro-nano structure under the constraint of the surface micro-nano structure die cavity of the second die roller 14.
The cooling roller 15 is connected with a freezing device, a rolling gap is formed between the cooling roller 15 and the second die roller 14, the cooling temperature is lower than the glass transition temperature Tg, for example, the Tg of PMMA (polymethyl methacrylate) is 110 ℃, the Tg of PC (polycarbonate) is 150 ℃, and the shape of the surface micro-nano structure features formed by the rolling of the additive rolling module are preserved and cooled. And finally, after the cooled base material 2 passes through a second traction roller 16, the material subjected to roll forming and shape-preserving cooling is wound on a winding roller 17.
The first laser 8 in the rolling and stamping module and the second laser 13 in the additive rolling and stamping module both adopt continuous or pulse type high-power lasers such as high-energy excimer lasers, and the power, the focal length and the light spot of the lasers are adjustable. The first mold roller 7 and the first support roller 6 in the roll-pressing module and the second mold roller 14 and the second support roller 18 in the additive roll-pressing module are made of high-strength and high-hardness high-light-transmittance materials such as quartz, sapphire or transparent ceramics. The surface processor 9 is an electrostatic processor, a corona processor or a plasma processor.
The rolling gaps between the first die roller 7 and the first supporting roller 6, between the powder control upper roller and the powder control lower roller, between the auxiliary pressing roller 12 and the second die roller 14, between the second die roller 14 and the second supporting roller 18, and between the second supporting roller 18 and the cooling roller 18 are all adjusted through a rolling gap adjusting mechanism, the rolling depth is controlled, and the rolling gap adjusting mechanism adopts a servo electric cylinder or a precision ball screw driven by a motor. The first traction roller 3, the first die roller 7, the second die roller 14, the second traction roller 16 and the powder control upper roller are all driven by servo motors. The cooling roller 15 is mechanically connected to the freezer. All roll shaft axes in this embodiment are all parallel arrangement.
Example 2
Example 2 differs from example 1 only in that: the roll-in embossing module comprises a first mold roller 7 and a first supporting roller 6 which are sequentially arranged from top to bottom, the first mold roller 7 or the second supporting roller 6 is made of a light-transmitting material, and a first laser 8 is arranged at the outer end of a pressure roller made of the light-transmitting material. The module uses a first laser 8 to pass through a first mold roller 7 made of a light-transmitting material or a first supporting roller 6 made of a light-transmitting material to perform single-side heating, rolling and imprinting on a substrate 2 so as to form fine structural features such as micro grooves or micro pits on the upper surface of the substrate 2 for use in a subsequent additive rolling module. The material increase rolling module comprises a second mould roller 14 and a second supporting roller 18 which are arranged from top to bottom, the second mould roller 14 and the second supporting roller 18 are made of light-transmitting materials, a second laser 13 is respectively arranged at the upper end of the second mould roller 14 and the lower end of the second supporting roller 18, a rolling gap is formed between the second mould roller 14 and the second supporting roller 18, and the material increase rolling module respectively utilizes the second laser 13 to penetrate through the second mould roller 14 made of the light-transmitting materials and the second supporting roller 18 made of the light-transmitting materials to carry out double-sided heating melting on the powder material 19 filled in the micro-nano structure cavity on the surface of the second mould roller 14 on the substrate 2, so that the molten powder material 19 is combined with the surface of the substrate 2.
As shown in fig. 2, in the first embodiment of the present embodiment, the first laser 8 is provided at the upper end of the first mold roll 7, and the second laser 13 is provided at the upper end of the second mold roll 14 and the lower end of the second support roll 18, respectively.
In a second embodiment of the present invention, the lower end of the first support roller 6 is provided with a first laser 8, and the upper end of the second mold roller 14 and the lower end of the second support roller 18 are respectively provided with a second laser 13 (not shown).
Example 3
Example 3 differs from example 1 only in that: the rolling and impressing module comprises a first mold roller 7 and a first supporting roller 6 which are sequentially arranged from top to bottom, the first mold roller 7 and the second supporting roller 6 are made of light-transmitting materials, a first laser 8 is respectively arranged at the upper end of the first mold roller 7 and the lower end of the first supporting roller 6, and a rolling gap is formed between the first mold roller 7 and the first supporting roller 6. The module respectively utilizes a first laser 8 to pass through a first mold roller 7 made of a light-transmitting material and a first supporting roller 6 made of a light-transmitting material to carry out double-sided heating rolling impression on a substrate 2 so as to form fine structural features such as micro grooves or micro pits and the like on the upper surface of the substrate 2 for the use of a subsequent additive rolling module. The second mold roller 14 or the second support roller 18 is made of a light-transmitting material, wherein a second laser 13 is disposed at an outer end of the pressure roller made of the light-transmitting material, and a rolling gap is formed between the second mold roller 14 and the second support roller 18. The additive rolling module utilizes a second laser 13 to penetrate through a second mold roller 14 made of a light-transmitting material or a second support roller 18 made of a light-transmitting material to perform single-side heating and melting on a powder material 19 filled in a micro-nano structure mold cavity on the surface of the second mold roller 14 on the substrate 2, so that the powder material 19 in a molten state is combined with the surface of the substrate 2.
As shown in fig. 3, in the first embodiment of the present embodiment, the upper end of the first mold roll 7 and the lower end of the first support roll 6 are respectively provided with one first laser 8, and the lower end of the second support roll 18 is provided with a second laser 13.
In a second embodiment of the present invention, a first laser 8 is provided at the upper end of the first mold roll 7 and at the lower end of the first support roll 6, respectively, and a second laser 13 (not shown) is provided at the upper end of the second mold roll 14.
Example 4
Example 4 differs from example 1 only in that: the roll-in embossing module comprises a first mold roller 7 and a first supporting roller 6 which are sequentially arranged from top to bottom, the first mold roller 7 or the second supporting roller 6 is made of a light-transmitting material, and a first laser 8 is arranged at the outer end of a pressure roller made of the light-transmitting material. The module uses a first laser 8 to pass through a first mold roller 7 made of a light-transmitting material or a first supporting roller 6 made of a light-transmitting material to perform single-side heating, rolling and imprinting on a substrate 2 so as to form fine structural features such as micro grooves or micro pits on the upper surface of the substrate 2 for use in a subsequent additive rolling module. The second mold roller 14 or the second support roller 18 is made of a transparent material, wherein a second laser 13 is disposed at an outer end of the pressure roller made of the transparent material, and a rolling gap is formed between the second mold roller 14 and the second support roller 18. The additive rolling module utilizes a second laser 13 to penetrate through a second mold roller 14 made of a light-transmitting material or a second support roller 18 made of a light-transmitting material to perform single-side heating and melting on a powder material 19 filled in a micro-nano structure mold cavity on the surface of the second mold roller 14 on the substrate 2, so that the powder material 19 in a molten state is combined with the surface of the substrate 2.
As shown in fig. 4, in the first embodiment of this embodiment, the first laser 8 is provided at the lower end of the first support roller 6, and the second laser 13 is provided at the lower end of the second support roller 18.
As shown in fig. 5, in the second embodiment of this embodiment, the first laser 8 is provided at the upper end of the first mold roll 7, and the second laser 13 is provided at the upper end of the second mold roll 14.
As shown in fig. 6, in a third embodiment of the present embodiment, a first laser 8 is provided at the upper end of a first mold roll 7, and a second laser 13 is provided at the lower end of a second support roll 18.
In a fourth embodiment of the present invention, a first laser 8 is provided at the lower end of the first supporting roller 6, and a second laser 13 (not shown) is provided at the upper end of the second mold roller 14.
The invention also provides a method for carrying out micro-nano rolling processing by the additive micro-nano rolling forming system, which comprises the following steps:
step one, an unreeling stage;
placing a coiled substrate 2 on an unwinding roller 1, performing traction unwinding through a first traction roller 3, adjusting the tensioning degree through a tension roller 4, and correcting deviation through a deviation correcting roller 5;
step two, a laser heating micro rolling and impressing stage;
the substrate 2 enters a rolling gap of a rolling and impressing module, is heated by a first laser 8, and is heated, rolled and impressed by a first mold roller 7 and a first supporting roller 6 in the rolling and impressing module, so that a fine structure characteristic is formed on the surface of the substrate 2;
step three, surface pretreatment;
the base material 2 enters a surface treatment module, and the surface of the base material 2 is treated by a surface processor 9;
step four, a powder laying and filling stage;
the base material 2 passes below the powder supply device 10, the powder supply device 10 drops powder, the quantity of the powder material 19 dropped on the base material 2 is controlled by the powder control device 11, the powder material enters a rolling gap formed between the auxiliary pressing roller 12 and the second die roller 14, and the powder material 19 on the base material 2 gradually fills a micro-nano structure die cavity on the second die roller 14 under the action of the auxiliary pressing roller 12;
step five, laser heating material increase micro-nano rolling forming stage;
the powder material 19 filled in the micro-nano structure die cavity on the second die roller 14 enters the rolling gap of the additive rolling module along with the substrate 2, is heated and melted by the second laser 13, so that the molten powder material 19 is embedded and combined with the substrate 2, and forms a surface micro-nano structure under the constraint of the micro-nano structure die cavity on the surface of the second die roller 14;
step six, cooling and demolding;
the material formed by the rolling of the additive rolling module enters a rolling gap formed between the second die roller 14 and the cooling roller 15, and is coated on the cooling roller 15 for shape-preserving cooling demoulding;
step seven, a winding stage;
the cooled substrate 2 passes through a second traction roller 16 and is wound on a winding roller 17.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A laser heating material increase micro-nano rolling forming system is characterized in that: the device comprises a base material (2) unreeled through an unreeling roller (1), a first traction roller (3), a tension roller (4), a deviation correcting roller (5), a rolling and impressing module, a surface processor (9), a powder control device (11), an auxiliary compression roller (12), a material adding and rolling module, a cooling roller (15) and a second traction roller (16) which are sequentially arranged on a rack and used for the base material (2) to sequentially pass through, a powder supply device (10) which is positioned between the surface processor (9) and the powder control device (11) and used for powder falling of the base material (2), and a reeling roller (17) which is used for reeling the base material (2), wherein the unreeling roller (1), the powder supply device (10) and the reeling roller (17) are all arranged on the rack;
the rolling and imprinting module comprises a first mold roller (7) and a first supporting roller (6) which are arranged up and down and keep a rolling gap, the first supporting roller (6) and/or the first mold roller (7) are made of light-transmitting materials, a first laser (8) is arranged right below the first supporting roller (6) and/or right above the first mold roller (7), a substrate (2) between the first supporting roller (6) and the first mold roller (7) is heated through the first laser (8), laser emitted by the first laser (8) is vertical to the horizontal plane where the substrate (2) is located, and the first mold roller (7) is used for imprinting the surface of the substrate (2) to form a fine structure characteristic;
the material adding and rolling module comprises a second mold roller (14) and a second supporting roller (18) which are arranged up and down and keep a rolling gap, the second mold roller (14) and/or the second supporting roller (18) are made of light-transmitting materials, a base material (2) between the second mold roller (14) and the second supporting roller (18) is heated through a second laser (13), the second laser (13) is arranged right above the second mold roller (14) and/or right below the second supporting roller (18), laser emitted by the second laser (13) is perpendicular to the horizontal plane where the base material (2) is located, and the base material (2) is located under the constraint of a micro-nano structure die cavity on the surface of the second mold roller (14) to form a micro-nano structure on the surface.
2. The laser heating material increase micro-nano rolling forming system according to claim 1, characterized in that: the first laser (8) and the second laser (13) both adopt continuous or pulse type high-power lasers.
3. The laser heating material increase micro-nano rolling forming system according to claim 1, characterized in that: the powder control device (11) comprises an upper powder control roller and a lower powder control roller which are arranged from top to bottom, and a rolling gap is formed between the upper powder control roller and the lower powder control roller.
4. The laser heating material increase micro-nano rolling forming system according to claim 1, characterized in that: the surface treater (9) is an electrostatic treater, a corona treater or a plasma treater.
5. The laser heating material increase micro-nano rolling forming system according to claim 1, characterized in that: the base material (2) is an optical material film, the powder material (19) provided by the powder supply device (10) is optical material powder, and the melting point of the optical material powder is higher than that of the base material (2).
6. The method for carrying out micro-nano rolling processing by the additive micro-nano rolling forming system according to any one of claims 1 to 5, wherein the method comprises the following steps: comprises the following steps of (a) carrying out,
step one, an unreeling stage;
the coiled base material (2) is placed on the unwinding roller (1), is sent out by the unwinding roller (1), is dragged and unwound by the first traction roller (3), is tensioned by the tension roller (4), and is corrected to deviate by the deviation correcting roller (5);
step two, a laser heating micro rolling and impressing stage;
the method comprises the following steps that a base material (2) enters a rolling gap of a rolling and impressing module, is heated by a first laser (8), and is heated, rolled and impressed by a first mold roller (7) and a first supporting roller (6) in the rolling and impressing module, so that a fine structure characteristic is formed on the surface of the base material (2);
step three, surface pretreatment;
the base material (2) enters a surface treatment module, and the surface of the base material (2) is treated by a surface processor (9);
step four, a powder laying and filling stage;
the base material (2) passes below the powder supply device (10), the powder supply device (10) is used for falling powder, the quantity of powder material (19) falling on the base material (2) is controlled by the powder control device (11), the powder material enters a rolling gap formed between the auxiliary pressing roller (12) and the second die roller (14), and the powder material (19) on the base material (2) gradually fills a micro-nano structure die cavity on the second die roller (14) under the action of the auxiliary pressing roller (12);
step five, laser heating material increase micro-nano rolling forming stage;
powder materials (19) filled in the micro-nano structure die cavity on the second die roller (14) enter the rolling gap of the additive rolling module along with the base material (2), are heated and melted by the second laser (13), so that the molten powder materials (19) are embedded and combined with the base material (2), and form a surface micro-nano structure under the constraint of the micro-nano structure die cavity on the surface of the second die roller (14);
step six, cooling and demolding;
the material formed by the rolling of the additive rolling module enters a rolling gap formed between a second die roller (14) and a cooling roller (15), and is coated on the cooling roller (15) for shape-preserving cooling demoulding;
step seven, a winding stage;
the cooled base material (2) passes through a second traction roller (16) and then is wound on a winding roller (17).
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| CN202011497783.0A CN112743733A (en) | 2020-12-17 | 2020-12-17 | Laser heating material increase micro-nano rolling forming system and method |
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| CN205467317U (en) * | 2016-01-26 | 2016-08-17 | 北京化工大学 | Novel photocuring minute -pressure seal former |
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