CN116238129A - Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof - Google Patents

Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof Download PDF

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Publication number
CN116238129A
CN116238129A CN202310195450.XA CN202310195450A CN116238129A CN 116238129 A CN116238129 A CN 116238129A CN 202310195450 A CN202310195450 A CN 202310195450A CN 116238129 A CN116238129 A CN 116238129A
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China
Prior art keywords
light guide
guide plate
microstructure
processing mechanism
pressing wheel
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CN202310195450.XA
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Chinese (zh)
Inventor
朱建辉
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Suzhou Yeguan Industry Co ltd
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Suzhou Yeguan Industry Co ltd
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Priority to CN202310195450.XA priority Critical patent/CN116238129A/en
Publication of CN116238129A publication Critical patent/CN116238129A/en
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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0075—Light guides, optical cables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an extrusion device of a double-sided microstructure light guide plate and a manufacturing process thereof, comprising extrusion equipment, an upper processing mechanism and a lower processing mechanism, wherein a discharge port of the extrusion equipment is connected with a feed end of the upper processing mechanism, an upper microstructure printed on the light guide plate is arranged in the upper processing mechanism, a discharge end of the upper processing mechanism is connected with a feed end of the lower processing mechanism through a conveying belt, and a lower microstructure printed on the light guide plate is arranged in the lower processing mechanism. The invention carries out imprinting microstructure on the upper layer of the plastic substrate through the upper layer processing mechanism, then carries out imprinting microstructure on the lower layer of the plastic substrate through the lower layer processing mechanism after solidification, and can better maintain the stability of the light guide plate substrate and prevent the light guide plate substrate from deforming. Because the transfer is not required in two processing factories, the online integrated processing is adopted, and the production cost is greatly reduced.

Description

Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof
Technical Field
The invention relates to the technical field of optical plate production, in particular to an extrusion device of a double-sided microstructure light guide plate and a manufacturing process thereof.
Background
The light guide plate is an optical plate of a reflective light source, and is provided with a microstructure, and is made of a material which has an extremely high refractive index and does not absorb light. When light rays are emitted to each light guide point of the microstructure on the light guide plate, the reflected light can uniformly spread to all angles, and finally the light rays are emitted from the front surface of the light guide plate to illuminate the position of the area where the light guide plate is positioned.
In the existing market process flow, the double-sided microstructure of the light guide plate is finished by two companies, the double-sided microstructure is produced from the foundation line of the company A, the microstructure is arranged on the upper-layer one-sided light plate of the light guide plate, then the product is delivered to the company B, and the microstructure is arranged on the lower-layer one-sided light plate of the light guide plate processed by the company B, so that secondary processing is performed. Because secondary processing is adopted, the production standards of two companies are different, the problem of communication is easy to generate, and the high reject ratio and the high cost are easy to cause for multiple processing.
In order to save the time cost, there are also two-sided microstructures processed by the same company, and more particularly, a device for forming a two-sided microstructure optical plate and a method for manufacturing the same, as disclosed in chinese patent application No. 201110272054X, mainly comprise extruding a high-temperature resin raw material in a die head, and then guiding the resin raw material between two spaced main transfer rollers and a sub transfer roller, wherein the roller surfaces of the main transfer roller and the sub transfer roller are respectively provided with a transfer microstructure, so that the microstructure patterns can be given to both sides of the resin raw material while rolling the resin raw material, thereby completing the two-sided microstructure light guide plate at one time in the on-line operation of the plate pressing material of a plate pressing machine.
However, the light guide plate manufactured by the process is directly carved with microstructures on the upper layer and the lower layer, but in actual operation, the upper layer is a Lenti microstructure and the lower layer is a lattice point microstructure due to different design functions of the upper layer and the lower layer. The synchronous extrusion molding can generate different upper and lower pressures, so that the end product is optically deformed and cannot be used.
Disclosure of Invention
The invention aims to provide an extrusion device of a double-sided microstructure light guide plate and a manufacturing process thereof, so as to solve the problems in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides an extrusion device of two-sided microstructure light guide plate, includes extrusion equipment, upper strata processing agency and lower floor's processing agency, extrusion equipment's discharge gate is connected with upper strata processing agency's feed end, be equipped with the upper strata microstructure of imprinting at the light guide plate in the upper strata processing agency, upper strata processing agency's discharge end is connected with lower floor's processing agency's feed end through the conveyer belt, be equipped with the lower floor's microstructure of imprinting at the light guide plate in the lower floor's processing agency.
In the above scheme, upper machining mechanism includes two levels first passive pinch rollers and a first initiative pinch roller side by side, the surface of first initiative pinch roller is equipped with the upper microstructure of imprinting at the light guide plate, first initiative pinch roller is installed between two first passive pinch rollers, extrusion equipment's extrusion die head is located the feed end department between first initiative pinch roller and the first passive pinch roller of one side, and the clearance between first initiative pinch roller and the first passive pinch roller of opposite side is the discharge end.
In the above scheme, lower floor processing mechanism includes second initiative pinch roller and second passive pinch roller, second initiative pinch roller sets up with the second passive pinch roller is perpendicular side by side, the conveyer belt passes gap between second initiative pinch roller and the second passive pinch roller, the surface of second initiative pinch roller is equipped with the lower floor's microstructure of imprinting at the light guide plate.
A manufacturing process of a double-sided microstructure light guide plate comprises the following steps:
s1, adding raw material particles into extrusion equipment, heating and melting the raw materials through hot melting, and extruding a molten light guide plate to an upper processing mechanism through an extrusion die head of the extrusion equipment;
s2, three horizontal pressing wheels are arranged in the upper layer processing mechanism, and an upper layer microstructure carved on the outer surface of the second pressing wheel is utilized, so that the upper layer microstructure is carved on the upper layer of the plastic substrate of the light guide plate when the light guide plate passes through the upper layer processing mechanism;
s3, after the layer processing mechanism processes, the plastic substrate of the light guide plate is solidified on a conveyor belt;
s4, the solidified plastic substrate of the light guide plate enters a lower layer processing mechanism, the lower layer processing mechanism is provided with an upper pressing wheel and a lower pressing wheel, and the lower microstructure carved on the lower pressing wheel is utilized, so that the lower microstructure is carved and written on the lower layer of the plastic substrate of the light guide plate when the light guide plate passes through the lower layer processing mechanism;
s5, conveying the light guide plate with the double-sided microstructure to a double-sided coating film and cutting and forming process.
In step S2, the upper layer processing mechanism maintains the use temperature of 90-120 ℃; in step S3, cooling the solidification temperature of the plastic substrate of the light guide plate to 30-60 ℃ on a conveyor belt; in step S4, the lower processing means maintains a use temperature of 90-120 degrees.
Compared with the prior art, the invention has the beneficial effects that: the invention carries out imprinting microstructure on the upper layer of the plastic substrate through the upper layer processing mechanism, then carries out imprinting microstructure on the lower layer of the plastic substrate through the lower layer processing mechanism after solidification, can better keep the stability of the light guide plate substrate, prevent the light guide plate substrate from deforming, and keep good appearance surface finish and beautiful appearance of the light guide plate. Because the transfer is not required in two processing factories, the online integrated processing is adopted, and the production cost is greatly reduced.
Drawings
The disclosure of the present invention is described with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Reference numerals in the drawings: 1-an extrusion device; 2-an upper layer processing mechanism; 21-a first passive pinch roller; 22-a first active pinch roller; 3-a conveyor belt; 4-a lower layer processing mechanism; 41-a second active pinch roller; 42-second passive puck.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention easy to understand, the present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures to which the invention pertains.
According to the technical scheme of the invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the true spirit of the invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, an extrusion device of a double-sided microstructure light guide plate comprises an extrusion device 1, an upper layer processing mechanism 2 and a lower layer processing mechanism 4, wherein a discharge port of the extrusion device 1 is connected with a feed end of the upper layer processing mechanism 2. The extrusion device 1 mainly adopts a plastic extruder to operate, and after raw material particles are hot-melted in a hot-melting mode, hot-melted materials are output through an extrusion die head.
The upper layer processing mechanism 2 is provided with an upper layer microstructure printed on the light guide plate and used for printing an upper layer of the extruded hot melt material. Specifically, the upper layer processing mechanism 2 includes two first plane pinch rollers 21 and a first initiative pinch roller 22 that are horizontal side by side, and the surface of first initiative pinch roller 22 is equipped with the upper microstructure of imprinting at the light guide plate, and first initiative pinch roller 22 is installed between two first passive pinch rollers 21, and the extrusion die head of extrusion equipment 1 is located the feed end department between first initiative pinch roller 22 and the first passive pinch roller 21 of one side, and the clearance between first initiative pinch roller 22 and the first passive pinch roller 21 of opposite side is the discharge end.
During operation, the first driving pinch roller 22 rotates under the drive of the motor to drive the hot melt material extruded at the feeding end between the first driving pinch roller 22 and the first driven pinch roller 21 at one side to rotate, the Lenti microstructure is imprinted on the upper layer of the plastic substrate in the process of rotating the hot melt material, and the plastic substrate is conveyed to the gap between the first driving pinch roller 22 and the first driven pinch roller 21 at the other side, namely the discharging end under the rotation of the first driving pinch roller 22.
The discharge end of the upper layer processing mechanism 2 is connected with the feed end of the lower layer processing mechanism 4 through a conveying belt 3, the conveying belt 3 further conveys materials through rollers at the bottom, and the substrate materials are solidified in the conveying process, so that the Lenti microstructure of the upper layer is shaped.
The lower layer processing mechanism 4 is provided with a lower layer microstructure printed on the light guide plate and is used for being printed on the lower layer of the plastic substrate material. Specifically, the lower layer processing mechanism 4 includes a second active pressing wheel 41 and a second passive pressing wheel 42, the second active pressing wheel 41 and the second passive pressing wheel 42 are vertically arranged side by side, the conveying belt 3 passes through a gap between the second active pressing wheel 41 and the second passive pressing wheel 42, and the outer surface of the second active pressing wheel 41 positioned at the lower layer is provided with a lower layer microstructure engraved on the light guide plate.
In operation, the conveyor belt 3 passes through the gap between the second driving pinch roller 41 and the second driven pinch roller 42, and the lower microstructure is arranged on the outer surface of the second driving pinch roller 41, so that when the plastic substrate passes through, the lower microstructure is imprinted on the lower surface of the plastic substrate, such as an imprinted net-shaped microstructure.
The upper and lower surfaces of the light guide plate substrate are respectively provided with a microstructure, and the microstructure can be conveyed to a laminating process for double-sided laminating through conveying of a conveying belt, and can be continuously conveyed to a cutting area for cutting and forming of the substrate.
The invention carries out imprinting microstructure on the upper layer of the plastic substrate through the upper layer processing mechanism, then carries out imprinting microstructure on the lower layer of the plastic substrate through the lower layer processing mechanism after solidification, so that the high-precision alignment imprinting position is maintained in synchronous micro-structure imprinting, the stability and excellent optical quality performance of the light guide plate substrate can be better maintained, the deformation of the light guide plate substrate is prevented, and the good appearance surface finish and the attractive appearance of the light guide plate are maintained. In addition, because the transfer in two processing factories is not needed, the online integrated processing is adopted, and the production cost is greatly reduced.
A manufacturing process of a double-sided microstructure light guide plate comprises the following steps:
s1, adding raw material particles into extrusion equipment, heating and melting raw materials by hot melting, pressurizing and exhausting and the like, and extruding a molten light guide plate to an upper processing mechanism through an extrusion die head of the extrusion equipment;
s2, three horizontal pressing wheels are arranged in the upper layer processing mechanism, the use temperature of 50-120 ℃ is kept, an upper layer microstructure carved on the outer surface of the second pressing wheel is utilized, and when the light guide plate passes through the upper layer processing mechanism, the upper layer microstructure is carved on the upper layer of the plastic substrate of the light guide plate;
s3, after the layer processing mechanism processes, the light guide plate plastic base material is solidified on a conveying belt, so that the solidification temperature of the light guide plate plastic base material is cooled to 30-60 ℃ to facilitate hardening and imprinting of the lower microstructure;
s4, the solidified plastic substrate of the light guide plate enters a lower layer processing mechanism, the lower layer processing mechanism is provided with an upper pressing wheel and a lower pressing wheel, the use temperature of 90-120 ℃ is kept, and when the light guide plate passes through the lower layer processing mechanism, the lower layer microstructure is engraved on the lower layer of the plastic substrate of the light guide plate;
s5, conveying the light guide plate with the double-sided microstructure to a double-sided coating film and cutting and forming process.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. These undisclosed elements are all of the prior art known to those skilled in the art.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (5)

1. An extrusion device of a double-sided microstructure light guide plate is characterized in that: including extrusion equipment (1), upper strata processing agency (2) and lower floor processing agency (4), the discharge gate and the feed end of upper strata processing agency (2) of extrusion equipment (1) are connected, be equipped with the upper microstructure of imprinting at the light guide plate in upper strata processing agency (2), the discharge end of upper strata processing agency (2) is connected with the feed end of lower floor processing agency (4) through conveyer belt (3), be equipped with the imprinting in lower floor processing agency (4) at the lower floor microstructure of light guide plate.
2. The extrusion apparatus of a double-sided microstructured light guide plate of claim 1, wherein: the upper machining mechanism (2) comprises two first driven pinch rollers (21) horizontally arranged side by side and a first driving pinch roller (22), the outer surface of the first driving pinch roller (22) is provided with an upper microstructure printed on the light guide plate, the first driving pinch roller (22) is arranged between the two first driven pinch rollers (21), and an extrusion die head of the extrusion equipment (1) is positioned at a feeding end between the first driving pinch roller (22) and the first driven pinch roller (21) on one side, and a gap between the first driving pinch roller (22) and the first driven pinch roller (21) on the other side is a discharging end.
3. The extrusion apparatus of a double-sided microstructured light guide plate of claim 1, wherein: the lower machining mechanism (4) comprises a second driving pressing wheel (41) and a second driven pressing wheel (42), the second driving pressing wheel (41) and the second driven pressing wheel (42) are vertically arranged side by side, the conveying belt (3) penetrates through a gap between the second driving pressing wheel (41) and the second driven pressing wheel (42), and the outer surface of the second driving pressing wheel (41) is provided with a lower microstructure printed on the light guide plate.
4. The manufacturing process of the double-sided microstructure light guide plate is characterized by comprising the following steps of:
s1, adding raw material particles into extrusion equipment, heating and melting the raw materials through hot melting, and extruding a molten light guide plate to an upper processing mechanism through an extrusion die head of the extrusion equipment;
s2, three horizontal pressing wheels are arranged in the upper layer processing mechanism, and an upper layer microstructure carved on the outer surface of the second pressing wheel is utilized, so that the upper layer microstructure is carved on the upper layer of the plastic substrate of the light guide plate when the light guide plate passes through the upper layer processing mechanism;
s3, after the layer processing mechanism processes, the plastic substrate of the light guide plate is solidified on a conveyor belt;
s4, the solidified plastic substrate of the light guide plate enters a lower layer processing mechanism, the lower layer processing mechanism is provided with an upper pressing wheel and a lower pressing wheel, and the lower microstructure carved on the lower pressing wheel is utilized, so that the lower microstructure is carved and written on the lower layer of the plastic substrate of the light guide plate when the light guide plate passes through the lower layer processing mechanism;
s5, conveying the light guide plate with the double-sided microstructure to a double-sided coating film and cutting and forming process.
5. The process for manufacturing a double-sided microstructured light guide plate of claim 4, wherein: in step S2, the upper layer processing mechanism maintains the use temperature of 90-120 ℃; in step S3, cooling the solidification temperature of the plastic substrate of the light guide plate to 30-60 ℃ on a conveyor belt; in step S4, the lower processing means maintains a use temperature of 90-120 degrees.
CN202310195450.XA 2023-03-03 2023-03-03 Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof Pending CN116238129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310195450.XA CN116238129A (en) 2023-03-03 2023-03-03 Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310195450.XA CN116238129A (en) 2023-03-03 2023-03-03 Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof

Publications (1)

Publication Number Publication Date
CN116238129A true CN116238129A (en) 2023-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310195450.XA Pending CN116238129A (en) 2023-03-03 2023-03-03 Extrusion device of double-sided microstructure light guide plate and manufacturing process thereof

Country Status (1)

Country Link
CN (1) CN116238129A (en)

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