CN114211674A - Melt extrusion device and method for polarizing film for OLED panel - Google Patents
Melt extrusion device and method for polarizing film for OLED panel Download PDFInfo
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- CN114211674A CN114211674A CN202111528291.8A CN202111528291A CN114211674A CN 114211674 A CN114211674 A CN 114211674A CN 202111528291 A CN202111528291 A CN 202111528291A CN 114211674 A CN114211674 A CN 114211674A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title description 14
- 238000003756 stirring Methods 0.000 claims abstract description 48
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 239000000155 melt Substances 0.000 claims abstract description 19
- 238000005485 electric heating Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 28
- 239000000084 colloidal system Substances 0.000 claims description 22
- 239000012943 hotmelt Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000003490 calendering Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 4
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000012745 toughening agent Substances 0.000 claims description 4
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 description 13
- 239000004831 Hot glue Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- 238000010079 rubber tapping Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 230000010287 polarization Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Images
Classifications
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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
- B29C43/34—Feeding the material to the mould or the compression means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—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
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
- C09J133/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J169/00—Adhesives based on polycarbonates; Adhesives based on derivatives of polycarbonates
-
- 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
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
- B29C2043/3427—Feeding the material to the mould or the compression means using carrying means hopper, vessel, chute, tube, conveying screw, for material in discrete form, e.g. particles or powder or fibres
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses a melt extrusion device and an extrusion method of a polarizing film for an OLED panel, wherein the melt extrusion device comprises the following steps: a case, wherein a mixing barrel is arranged in the case; a preheating funnel is integrally arranged at the lower end of the mixing barrel; a composite stirring frame is rotatably arranged in the case; the upper end of the composite stirring frame is provided with a plurality of M-shaped stirring rods acting on the mixing barrel; the lower end of the composite stirring frame is integrally provided with a stirring rod in a shape like a Chinese character 'shi' acting on the preheating funnel; the feed end of the discharge pipe is butted with the opening at the lower end of the preheating funnel; the inner cavity of the discharge pipe is respectively provided with four screw rods which are symmetrically and rotatably arranged around the center from top to bottom and from left to right; the four screw rods are matched and screwed with each other to form linkage screw threads, and the depth of the screw threads from front to back is gradually reduced; the upper screw rod and the lower screw rod/are embedded with electric heating rods; the left screw is provided with three sharp angle grooves at intervals; the right screw is provided with exhaust holes corresponding to the three sharp corner grooves at intervals; and three leakage holes corresponding to the three exhaust holes are formed in the outer wall of the discharge pipe.
Description
Technical Field
The invention relates to the field of polarizing film preparation, in particular to a melt extrusion device and an extrusion method of a polarizing film for an OLED panel.
Background
Since the color OLED is a self-luminous light source, the bottom aluminum plate will have obvious reflection image after being irradiated by external light source, so the polarizing film (plate) is needed to filter the incident light source to separate the light components, and part of the light components passes through, and the other part is shielded by absorption, reflection and scattering, however, the traditional polarizing film has lower transmittance, so the OLED luminance is lower, the polarization degree is higher, and the contrast is not good, as disclosed in japanese patent No. 59-159109, the transmittance of the polarizing film is 30%, so the polarizing film with lower transmittance will cause the OLED luminance to be insufficient, and in order to increase the luminance, the OLED power must be increased to increase the luminance of the light source, but this method will relatively shorten the service life, as shown in fig. 9, which is a schematic diagram showing the relationship between the OLED luminance and the lifetime, the luminance is controlled at 0.6(600 cd/m2), however, if the luminance is increased to 1(1000 lumens cd/m2) or more, the luminance decays with time, and the lifetime is at most 2500 hours.
In the preparation process of the prior polarizer, PMMA resin, PC resin, glass fiber, PVC resin, toughening agent, dispersing agent and leveling agent are mixed for a period of time in a high-speed mixer to obtain a mixture, and then the mixture is fed into a melting extruder and extruded to an external calendering device to be rolled into sheets; in the process, because the material mixing and the mixture melting adopt equipment in a plurality of flows, which is inconvenient, a melting and extruding device of the polarizing film is needed to be designed, which can realize the material mixing and the melting and extruding integrally, exhaust gas in time in the hot melting process and improve the quality of finished products.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter. To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a melt extrusion apparatus of a polarizing film for an OLED panel and an extrusion method thereof, including:
a case, wherein a mixing barrel is arranged in the case; a preheating funnel is integrally arranged at the lower end of the mixing barrel; a composite stirring frame is rotatably arranged in the case; the upper end of the composite stirring frame is provided with a plurality of M-shaped stirring rods acting on the mixing barrel; the lower end of the composite stirring frame is integrally provided with a stirring rod in a shape like a Chinese character 'shi' acting on the preheating funnel;
the feed end of the discharge pipe is butted with the opening at the lower end of the preheating funnel; the inner cavity of the discharge pipe is respectively provided with four screw rods which are symmetrically and rotatably arranged around the center from top to bottom and from left to right; the four screw rods are matched and screwed with each other to form linkage screw threads, and the depth of the screw threads from front to back is gradually reduced; the upper screw rod and the lower screw rod/are embedded with electric heating rods; the left screw is provided with three sharp angle grooves at intervals; the right screw is provided with exhaust holes corresponding to the three sharp corner grooves at intervals; and three leakage holes corresponding to the three exhaust holes are formed in the outer wall of the discharge pipe.
Preferably, the upper screw at the feed end of the tapping pipe is reduced by a portion of the length, the reduced length being the same as the width of the feed port of the tapping pipe.
Preferably, a material guide pipe is arranged on one side surface of the case; a feeding hole communicated with the material guide pipe is formed in the side surface of the mixing barrel; and one end of the material guide pipe close to the feed inlet is provided with a pneumatic flashboard I for cutting off the material.
Preferably, a heating device is arranged around the outer side of the preheating funnel.
Preferably, the drying device is arranged in the cabinet; the drying device comprises a hot air blower and an exhaust pipe; the hot air blower is arranged at the upper part of the mixing barrel; one end of the exhaust pipe is connected with the mixing barrel, and the other end of the exhaust pipe extends out of the side face of the case and is in threaded connection with a pipe plug.
Preferably, one end of the discharge pipe is fixedly connected with the lower end of the preheating funnel, and the other end of the discharge pipe is fixedly connected with the discharge hole; and a pneumatic flashboard II for cutting off the material is arranged on the side of the discharge pipe close to one end of the preheating hopper.
Preferably, a gearbox connected with a rotating motor is arranged on the upper end face of the case; an output shaft at the lower end of the gearbox extends into the case and is connected with a coupler; the composite stirring frame comprises a rotating shaft I; the upper end of the rotating shaft I is in threaded connection with the coupler; the lower end of the rotating shaft I is rotatably arranged on a panel at the upper end of the mixing barrel through a bearing, and is connected with a supporting disk in a threaded manner after extending into the mixing barrel; three M-shaped stirring frames are arranged and are connected to the outer side of the lower end of the supporting plate in an inverted and fixed surrounding manner; a long rod is arranged in the middle of the lower end of the supporting plate; the lower end of the long rod is provided with a long stirring blade and a short stirring blade, so that a herringbone stirring frame is formed.
Preferably, a power box is arranged at the lower end of the case; one end of each of the four screw rods is connected with a plurality of torque output ends of the power box.
Preferably, four plate-threaded pipes are arranged in the discharge pipe; and the four screw rods are respectively arranged in the four half-thread pipes in a threaded manner.
Preferably, the melt extrusion device of the polarizing film for the OLED panel and the extrusion method thereof, wherein the process comprises:
step one, preparing hot melt colloid mixed raw materials of a polarizing film for an OLED panel, wherein the raw materials are added in parts by weight: 100-120 parts of PMMA resin, 80-100 parts of PC resin, 5-10 parts of polystyrene, 10-20 parts of PVC resin, 1-1.2 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5-0.8 part of toughening agent, 0.1-0.3 part of dispersing agent and 0.1-0.3 part of flatting agent;
step two, guiding the mixed raw materials prepared in the step one into a mixing barrel 2 in a case 1, starting a composite stirring frame, and setting the stirring speed to be 500 rpm; starting a preheating funnel, and setting the heating temperature to be 100 ℃; uniformly heating the mixed raw materials while stirring, and forming a preheated raw material after the mixed raw materials are continuously heated for 20 minutes;
opening a pneumatic flashboard II, introducing the preheated raw material into a discharge pipe, and starting electric heating rods in upper and lower screw rods to a preset temperature; the rotating speed of the left screw and the rotating speed of the right screw are adjusted to be 100pm, the upper screw and the lower screw are driven to be screwed and screwed to rotate, the whole preheated raw material is heated to molten colloid, and is continuously spirally compressed and extruded in the cavity at the centers of the four screws until external calendering equipment carries out subsequent treatment, so that the melt extrusion operation of the hot melt colloid for preparing the polarizing film for the OLED panel is completed.
The invention at least comprises the following beneficial effects:
when the preparation raw materials of the hot-melt colloid of the polarizing film for the OLED panel are mixed, the mixing device (a mixing barrel/a preheating hopper) and the hot-melt extrusion device (a discharge pipe) can be integrally configured, so that the material treatment process is reduced, and the operation efficiency is improved; the preheating funnel can ensure that the mixed raw materials can be preheated to a certain stable temperature when entering a hot-melting basic device (discharge pipe), and then the mixed raw materials are put into the discharge pipe for hot-melting extrusion, so that the quality of a hot-melting colloid is more uniform, and the preparation quality of subsequent products is improved; the upper screw and the lower screw serve as heating devices, are directly and more uniformly attached and screwed with hot melt colloid in extrusion, have better hot melt effect compared with the current mode of directly heating the shell, and improve the preparation quality of subsequent products; the most unique design of the invention is that the three sharp corner grooves are matched with the three exhaust holes to continuously exhaust the hot melt adhesive in the extrusion process, when the hot melt adhesive is heated, some bubbles can appear in the hot melt adhesive, and how to timely exhaust the bubbles in the hot melt adhesive is the key of the quality of the polarizing film prepared by post-calendering; when the left screw and the right screw are screwed, the hot melt adhesive passes through the larger ends of the three sharp-angle grooves, the instantaneous pressure is reduced, the whole adhesive can be immediately filled into the larger ends of the sharp-angle grooves, but gas can overflow from the exhaust holes on the other side until the gas is discharged to the outside from the leakage opening; make the hot melt colloid can not reveal through this kind of configuration like this, can last the exhaust in a confined space again, this part sets up a plurality of backs through the interval, and the hot melt colloid of having guaranteed can both be even exhaust before the ejection of compact, guarantees the preparation quality of follow-up product. Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the general structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a tapping pipe according to the invention;
FIG. 3 is a schematic top view of the tapping pipe according to the invention;
FIG. 4 is a schematic view of the left and right screws of the present invention;
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text. It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof. It is to be understood that in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience in describing the present invention and for simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically. Further, in the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature.
Fig. 1-4 show an implementation form of the present invention, comprising:
a machine case 1, wherein a mixing barrel 2 is arranged in the machine case; a preheating funnel 3 is integrally arranged at the lower end of the mixing barrel 2; a composite stirring frame 4 is rotatably arranged in the case 1; the upper end of the composite stirring frame 4 is provided with a plurality of M-shaped stirring rods 41 acting on the mixing barrel 2; the lower end of the composite stirring frame 4 is integrally provided with a stirring rod 42 in a shape like the Chinese character 'shi' acting on the preheating funnel 3;
the feed end 51 of the discharge pipe 5 is butted with the lower end opening of the preheating funnel 3; the inner cavity of the discharge pipe 5 is respectively provided with four screw rods 6 which are symmetrical about the center in the vertical, left and right directions; the four screw rods 6 are matched and screwed with each other for linkage spiral, and the depth of the screw thread from front to back is gradually reduced; an electric heating rod 611 is embedded in the upper and lower screw rods 61/62; the left screw 63 is provided with three sharp angle grooves 631 at intervals; the right screw 64 is provided with air vent holes 641 corresponding to the three sharp corner grooves 631 at intervals; the outer wall of the discharge pipe 5 is provided with three leak holes 501 corresponding to the three vent holes 641.
The working principle is as follows:
when the invention is used, firstly, the hot-melt colloid raw material of the polarizing film for the OLED panel is mixed to form a mixed raw material, the mixed raw material is introduced into the mixing barrel 2 in the case 1, the composite stirring frame 4 is started, and the rotating speed is set; starting the preheating funnel 3, setting the temperature, uniformly heating the mixed raw materials while stirring, and forming the preheating raw materials after the mixed raw materials are continuously heated for a certain time; after the preheating raw material is guided into the discharge pipe 5, the middle part 50 where the four screws 6 are screwed together forms a compression extrusion path for extruding the preheating raw material, the electric heating rod 611 in the upper screw 61/62 is turned on, at this time, the upper screw 61 and the lower screw 62 continuously have high temperature to perform hot melting on the preheating raw material to form hot melt colloid, and at the same time, the hot melt colloid is extruded and discharged to the outside by the continuous screwing of the four screws 6 at any time, and the next calendering process is performed.
The structure has the advantages that when the preparation raw materials of the hot-melt colloid of the polarizing film for the OLED panel are mixed, the mixing device (the mixing barrel 2/the preheating funnel 3) and the hot-melt extrusion device (the discharge pipe 5) can be configured integrally, so that the material treatment process is reduced, and the operation efficiency is improved; the preheating funnel 3 can pre-heat the mixed raw materials to a certain stable temperature when the mixed raw materials enter a hot-melting extrusion device (a discharge pipe 5), and then when the mixed raw materials are put into the discharge pipe 5 for hot-melting extrusion, the hot-melting quality of the hot-melting colloid is more uniform, and the preparation quality of subsequent products is improved; the upper screw 61/62 and the lower screw 61/62 directly serve as heating devices, can be uniformly attached and screwed with hot melt colloid in extrusion, have better hot melt effect compared with the current mode of directly heating the shell, and improve the preparation quality of subsequent products; the most unique design of the invention comes from that the three sharp corner grooves 631 are matched with the three exhaust holes 641 to continuously exhaust the hot melt adhesive in the extrusion process, when the hot melt adhesive is heated, some bubbles can appear in the hot melt adhesive, and how to timely exhaust the bubbles in the hot melt adhesive is the key to the quality of the polarizing film prepared by post-calendering; when the left screw and the right screw are screwed, the hot melt adhesive 8 passes through the larger ends of the three sharp angle grooves 631, the instantaneous pressure is reduced, the whole adhesive can be immediately filled into the larger ends of the sharp angle grooves 631, but the gas can overflow from the exhaust holes 641 at the other side until the gas is exhausted to the outside from the leakage opening; make the hot melt colloid can not reveal through this kind of configuration like this, can last the exhaust in a confined space again, this part sets up a plurality of backs through the interval, and the hot melt colloid of having guaranteed can both be even exhaust before the ejection of compact, guarantees the preparation quality of follow-up product.
In another embodiment, the upper screw 61 at the feed end 51 of the tapping pipe 5 is reduced by a length which is the same as the width of the feed end 51. The structure has the advantages that the materials are more easily dropped into the middle parts of the four screw rods 6 from the feeding end 51, and the hot melting extrusion of the materials is convenient.
In another embodiment, a material guide pipe 13 is arranged on one side surface of the case 1; a material guide port 21 communicated with the material guide pipe 13 is formed in the side surface of the mixing barrel 2; and one end of the material guide pipe 13 close to the material guide opening 21 is provided with a pneumatic flashboard I22 for cutting off the material. The advantage of this kind of structure is that, guarantees that various raw materialss are convenient more stable when leading-in compounding bucket 2.
In another embodiment, a heating device 31 is disposed around the outside of the preheating hopper 3. This configuration has the advantage of making the heating of the preheating hopper 3 more uniform.
In another embodiment, the drying device is arranged inside the cabinet 1; the drying device comprises a hot air blower 71 and an exhaust pipe 72; the hot air blower 71 is arranged at the upper part of the mixing barrel 1; one end of the exhaust pipe 72 is connected with the mixing barrel 2, and the other end of the exhaust pipe extends out of the side surface of the case 1 and is connected with a pipe plug 73 in a threaded manner. The advantage of this kind of structure lies in, can carry out drying process to the material in compounding bucket 2 at the compounding operation in-process, prevents that moisture from influencing the material quality.
In another embodiment, a pneumatic gate II 511 for cutting off the material is arranged on the side of the feed end 51 of the tapping pipe. The advantage of this kind of structure is that, closing pneumatic gate II 511 earlier in the mixing, preventing that the material that has not mixed yet and the completion of preheating from getting into discharging pipe 5, influences the quality of follow-up hot melt extrusion product.
In another embodiment, the upper end surface of the chassis 1 is provided with a gearbox 11 connected with a rotating motor 10; an output shaft at the lower end of the gearbox 11 extends into the case 1 and then is connected with a coupler 12; the composite stirring frame 4 comprises a rotating shaft I43; the upper end of the rotating shaft I43 is in threaded connection with the coupler 12; the lower end of the rotating shaft I43 is rotatably arranged on the upper end panel of the mixing barrel 2 through a bearing 431, and is in threaded connection with a supporting disc 44 after extending into the interior; three of the M-shaped stirring frames 41 are reversely, fixedly and circularly connected to the outer side of the lower end of the supporting plate 44; a long rod 421 is arranged in the middle of the lower end of the support plate 44; the lower end of the long rod 421 is provided with a long stirring blade and a short stirring blade, so as to form a Chinese character 'shi' shaped stirring frame 42. The advantage of this kind of structure lies in, through the adaptation effect of the agitator frame of different structures in the stirring space of different shapes, forms more stable even stirring effect.
In another embodiment, the lower end of the machine case 1 is provided with a power box 14; one end of each of the four screw rods 6 is connected with a plurality of torque output ends of the power box 14. This configuration has the advantage of providing stable rotational power to four of the screws 6.
In another embodiment, four half-threaded pipes 502 are inserted into the tapping pipe 5; the four screw rods 6 are respectively screwed in the four half-threaded pipes 502. This construction has the advantage of ensuring the support of four of said screws 6.
In another embodiment, a method for extruding a melt extrusion apparatus based on a polarizing film for an OLED panel includes:
step one, preparing hot melt colloid mixed raw materials of a polarizing film for an OLED panel, wherein the raw materials are added in parts by weight: 100-120 parts of PMMA resin, 80-100 parts of PC resin, 5-10 parts of polystyrene, 10-20 parts of PVC resin, 1-1.2 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5-0.8 part of toughening agent, 0.1-0.3 part of dispersing agent and 0.1-0.3 part of flatting agent;
step two, guiding the mixed raw materials prepared in the step one into a mixing barrel 2 in a case 1, starting a composite stirring frame, and setting the stirring speed to be 500 rpm; starting a preheating funnel, and setting the heating temperature to be 100 ℃; uniformly heating the mixed raw materials while stirring, and forming a preheated raw material after the mixed raw materials are continuously heated for 20 minutes;
opening a pneumatic flashboard II, introducing the preheated raw material into a discharge pipe, and starting electric heating rods in upper and lower screw rods to a preset temperature; the rotating speed of the left screw and the rotating speed of the right screw are adjusted to be 100pm, the upper screw and the lower screw are driven to be screwed and screwed to rotate, the whole preheated raw material is heated to molten colloid, and is continuously spirally compressed and extruded in the cavity at the centers of the four screws until external calendering equipment carries out subsequent treatment, so that the melt extrusion operation of the hot melt colloid for preparing the polarizing film for the OLED panel is completed. (the polarizer laminated by the polarizing film for the OLED panel prepared by the method realizes the indexes of more than 90 percent of light transmittance, less than 3 phase difference and less than 1 percent of haze)
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art. While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A melt extrusion device of a polarizing film for an OLED panel is characterized by comprising:
a case, wherein a mixing barrel is arranged in the case; a preheating funnel is integrally arranged at the lower end of the mixing barrel; a composite stirring frame is rotatably arranged in the case; the upper end of the composite stirring frame is provided with a plurality of M-shaped stirring rods acting on the mixing barrel; the lower end of the composite stirring frame is integrally provided with a stirring rod in a shape like a Chinese character 'shi' acting on the preheating funnel;
the feed end of the discharge pipe is butted with the opening at the lower end of the preheating funnel; the inner cavity of the discharge pipe is respectively provided with four screw rods which are symmetrically and rotatably arranged around the center from top to bottom and from left to right; the four screw rods are matched and screwed with each other to form linkage screw threads, and the depth of the screw threads from front to back is gradually reduced; an electric heating rod is embedded in the upper screw and the lower screw; the left screw is provided with three sharp angle grooves at intervals; the right screw is provided with exhaust holes corresponding to the three sharp corner grooves at intervals; and three leakage holes corresponding to the three exhaust holes are formed in the outer wall of the discharge pipe.
2. The melt extrusion apparatus of a polarized film for an OLED panel according to claim 1, wherein the upper screw located at the feed end position of the discharge tube is reduced by a length equal to the width of the feed end.
3. The melt extrusion apparatus for a polarizing film for an OLED panel according to claim 1, wherein a material guide tube is provided at one side of the cabinet; a material guide port communicated with the material guide pipe is formed in the side surface of the mixing barrel; and one end of the material guide pipe close to the material guide port is provided with a pneumatic flashboard I for cutting off the material.
4. The melt extrusion apparatus for a polarizing film for an OLED panel according to claim 1, wherein a heating means is disposed around an outer side of the preheating funnel. This configuration has the advantage of making the heating of the preheating hopper more uniform.
5. The melt extrusion apparatus of a polarizing film for an OLED panel according to claim 1, further comprising a drying device disposed inside the cabinet; the drying device comprises a hot air blower and an exhaust pipe; the hot air blower is arranged at the upper part of the mixing barrel; one end of the exhaust pipe is connected with the mixing barrel, and the other end of the exhaust pipe extends out of the side face of the case and is in threaded connection with a pipe plug.
6. The melt extrusion apparatus for a polarizing film for an OLED panel according to claim 1, wherein a pneumatic shutter ii for blocking the material is provided to a side of the feeding end of the discharging pipe.
7. The melt extrusion device of a polarizing film for an OLED panel according to claim 1, wherein a gear box connected to a rotating motor is provided at an upper end surface of the cabinet; an output shaft at the lower end of the gearbox extends into the case and is connected with a coupler; the composite stirring frame comprises a rotating shaft I; the upper end of the rotating shaft I is in threaded connection with the coupler; the lower end of the rotating shaft I is rotatably arranged on a panel at the upper end of the mixing barrel through a bearing, and is connected with a supporting disk in a threaded manner after extending into the mixing barrel; three M-shaped stirring frames are arranged and are connected to the outer side of the lower end of the supporting plate in an inverted and fixed surrounding manner; a long rod is arranged in the middle of the lower end of the supporting plate; the lower end of the long rod is provided with a long stirring blade and a short stirring blade, so that a herringbone stirring frame is formed.
8. The melt extrusion apparatus of a polarizing film for an OLED panel according to claim 1, wherein a power box is provided at a lower end of the cabinet; one end of each of the four screw rods is connected with a plurality of torque output ends of the power box.
9. The melt extrusion apparatus for a polarizing film for an OLED panel according to claim 1, wherein four half-threaded pipes are built in the discharge pipe; the four screw rods are respectively screwed in the four half-thread pipes.
10. The extrusion method of the melt extrusion apparatus based on the polarizing film for the OLED panel according to any one of claims 1 to 9, comprising the steps of:
step one, preparing hot melt colloid mixed raw materials of a polarizing film for an OLED panel, wherein the raw materials are added in parts by weight: 100-120 parts of PMMA resin, 80-100 parts of PC resin, 5-10 parts of polystyrene, 10-20 parts of PVC resin, 1-1.2 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5-0.8 part of toughening agent, 0.1-0.3 part of dispersing agent and 0.1-0.3 part of flatting agent;
step two, guiding the mixed raw materials prepared in the step one into a mixing barrel in a case, starting a composite stirring frame, and setting the stirring rotating speed as a preset rotating speed; starting a preheating funnel, and setting the heating temperature to be a preset temperature; uniformly heating the mixed raw materials while stirring, and forming a preheated raw material after a certain time;
opening a pneumatic flashboard II, introducing the preheated raw material into a discharge pipe, and starting electric heating rods in upper and lower screw rods to a preset temperature; adjusting the preset rotating speeds of the left screw and the right screw to drive the upper screw and the lower screw to be screwed together for rotation, heating the whole preheated raw material to molten colloid, and continuously spirally compressing and extruding the cavity at the centers of the four screws until external calendering equipment performs subsequent treatment, thereby completing the melt extrusion operation of preparing the hot-melt colloid of the polarizing film for the OLED panel.
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