CN217835025U - Production equipment of polaroid - Google Patents

Abstract

The application provides a polarizer production device, which comprises a functional groove (10) for processing a PVA film (20) so as to enable the PVA film (20) to have a polarization function; a plurality of scrapers (30) for scraping off the solution adhered to both surfaces of the PVA film (20) coming out of the functional tank (10); scraper (30) through scraper seat (40) mobilizable set up in on function groove (10), scraper seat (40) are used for adjusting scraper (30) with distance and angle between PVA membrane (20). The application provides a production facility of polaroid, the position of scraper can be adjusted to can guarantee in long-time use that the scraper is laminated in PVA membrane surface all the time, can reliably strike off PVA membrane surface remaining boric acid solution, improve the yield of product.

Description

Production equipment of polaroid

Technical Field

The application belongs to the technical field of polaroid production, in particular to production equipment of a polaroid.

Background

The liquid crystal display has the advantages of low energy consumption, low radiation, large visual area, high definition, stable and non-flashing image, small volume and easy transportation, etc., and gradually becomes the mainstream display product in the information era, while the polarizer, as one of the key original devices of the liquid crystal display, plays an indispensable important role, and the prior polarizer has been deeply inserted into various fields of display technology, including technologies such as OLED, mini-LED, mcro-LED, etc., and has the shadow of the polarizer.

Polyvinyl Alcohol (PVA) films are key materials for realizing a polarizing function in a polarizer, and form a film with a polarizing effect after the processes of washing, swelling, dyeing, stretching, color complementing, water squeezing, drying and the like. However, the PVA film contains boric acid in the PVA extension and color compensation solution, and the PVA film brings the solution containing boric acid into the oven, so that micro crystals are easily formed on the PVA film surface, and micro foreign matters are directly formed after the PVA with crystals is attached to a double-layer Triacetyl Cellulose (TAC) film, which affects the production yield of the polarizer.

Among the correlation technique, set up the scraper through PVA membrane both sides before getting into the oven and clear up the remaining boric acid solution in PVA membrane surface, nevertheless because the rigidity of scraper and PVA membrane, make the scraper can not laminate all the time on PVA membrane surface to the remaining boric acid solution in clearance PVA surface that can not be fine influences the product yield.

SUMMERY OF THE UTILITY MODEL

The application provides a production facility of polaroid, the position of scraper can be adjusted to can guarantee in long-time use that the scraper is laminated in PVA membrane surface all the time, can reliably strike off the remaining boric acid solution in PVA membrane surface, improve the yield of product.

In order to solve the above problem, the embodiment of the present application provides a technical solution that: a production apparatus for a polarizer, comprising: the functional tank is used for processing the PVA film so as to enable the PVA film to have a polarization function; a plurality of scrapers for scraping off the solution adhered to both surfaces of the PVA film coming out of the functional tank; the scraper pass through scraper seat mobilizable set up in on the function groove, the scraper seat is used for adjusting the scraper with distance and angle between the PVA film.

In a possible design, the number of the scrapers and the scraper seats is two, one end of each of the two scrapers is movably mounted on one of the scraper seats, the other end of each of the two scrapers is movably mounted on the other scraper seat, and a gap for the PVA film to pass through is formed between the two scrapers.

In one possible embodiment, the doctor blade is rotatably and translatably arranged on the doctor blade seat.

In one possible design, the scraper seat comprises a supporting plate and a moving device, the scraper is mounted on the inner side surface of the supporting plate through a clamping seat, and the moving device is mounted on the inner side of the supporting plate and used for driving the scraper to translate through the clamping seat.

In a possible design, the moving device includes an air cylinder and a sliding plate slidably disposed on the inner side surface of the supporting plate, a piston rod of the air cylinder is connected to the clamping seat through the sliding plate, and the sliding plate is driven by the telescopic motion of the piston rod to slide on the supporting plate.

In a possible design, the clamping seat is rotatably arranged on the sliding plate through a rotating shaft, an avoiding groove is formed in the supporting plate, the rotating shaft penetrates through the avoiding groove and is connected with a rotating device, and the rotating device is used for driving the clamping seat to rotate.

In a possible design, the rotating device comprises a hand wheel and a speed reducer, and the hand wheel is connected with the rotating shaft through the speed reducer so as to drive the scraper to rotate.

In one possible design, the cross section of the scraper is rectangular, and a planar chamfer is arranged between two adjacent edges and is attached to the PVA film.

In one possible design, a driving roller for moving the PVA film out of the functional groove is provided on the doctor blade holder.

In one possible embodiment, the scraper consists of any of glass, carbon fiber, ceramic, and metal.

According to the production facility of polaroid that this application embodiment provided, in the production process of polaroid, the PVA membrane unreels the back, at first can get into the function groove and carry out processing such as washing swelling, dyeing, extension, complementary color to make the PVA membrane have polarizing function, secondly utilize the scraper to scrape off the solution that comes out from two surfaces of PVA membrane that have polarizing function in function groove, later stoving PVA membrane, make it can compound in order to form the polaroid with the double-deck TAC membrane that has preprocessed, pressure sensitive adhesive, from type membrane, protection film. In this in-process, because distance and angle between scraper and the PVA membrane can be adjusted, make the staff adjust the position between scraper and the PVA membrane at any time, thereby in the long-time use of production facility, can guarantee that the scraper is laminated in two surfaces of PVA membrane all the time, and then make the scraper can be reliable strike off PVA membrane surface remaining boric acid solution, avoid PVA membrane surface to form small crystallization after drying, promote the production yield of polaroid, reduction in production cost.

The production facility of polaroid that this application embodiment provided has simple structure, advantages such as convenient operation, through set up the blade holder of scraping of distance and angle between regulation scraper and the PVA membrane on the function groove, make the position between scraper and the PVA membrane adjustable, make the staff can adjust the position of scraper at any time in the long-time use of production facility, thereby can guarantee that the scraper laminates in two surfaces of PVA membrane all the time, make the scraper can be reliable strike off PVA membrane surface remaining boric acid solution, further improve the effect of scraping of scraper, promote the production yield of polaroid, reduce the manufacturing cost of polaroid.

Drawings

Fig. 1 is a schematic structural diagram of a polarizer production apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a part of the structure of a polarizer production apparatus provided in an embodiment of the present application;

FIG. 3 is a schematic view of a doctor blade and a doctor blade holder according to an embodiment of the present disclosure;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

FIG. 5 is a schematic front view of a doctor blade and a doctor blade holder according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a doctor blade and a doctor blade holder according to an embodiment of the present disclosure;

fig. 7 is a schematic side view of a scraper blade according to an embodiment of the present application.

Reference numerals are as follows: 10. a functional groove; 20. a PVA film; 30. a scraper; 31. chamfering the plane; 40. a scraper seat; 41. a support plate; 411. an avoidance groove; 412. a slide rail; 42. a mobile device; 421. a cylinder; 422. a slide plate; 422a and a notch; 43. a rotating device; 431. a hand wheel; 432. a speed reducer; 433. fastening a handle; 50. a clamping seat; 51. a rotating shaft; 60. a driving roller; 70. baking oven; 80. a TAC film; 90. a protective film; 100. an unwinding mechanism; 110. a winding mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, if any, refer to the orientation or positional relationship shown in FIG. 1, which is used for ease of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

The polaroid is one of the upstream key materials in the electronic display industry, is essentially a composite film, and is mainly formed by compounding a PVA film, a TAC film, a pressure-sensitive adhesive, a release film, a protective film and the like. The PVA film is a core material for realizing the polarizing function of the polarizer, and determines key optical indexes of the polarizer, such as polarizing performance, transmittance, hue and the like.

In the manufacturing process of the polaroid, the core procedure is a PVA (polyvinyl alcohol) extension compounding process. Fig. 1 is a schematic structural diagram of a polarizer production apparatus according to an embodiment of the present disclosure. As shown in fig. 1, after being unreeled by the unreeling mechanism 100, the PVA film 20 enters the functional tank 10 under the driving of the driving roller 60, after being processed by the processes of water washing, swelling, dyeing, extending and color complementing in the functional tank 10, the PVA film 20 with the polarization function can be brought out of the functional tank 10 by the driving roller 60, the solution (such as a solution containing boric acid) attached to the two surfaces of the PVA film 20 is scraped by the scraper 30, and then the PVA film 20 is dried in the oven 70, and then the pre-processed double-layer TAC film 80 is directly compounded with the dried PVA film 20 to form a polarizing film surface compound protective film 90, which is then wound up by the winding mechanism 110 to facilitate subsequent coating, compounding, cutting and other operations.

The embodiment of the application provides a production facility of polaroid, through set up the blade holder of scraping of distance and angle between regulation scraper 30 and PVA membrane 20 on function groove 10, make the staff can adjust the position between scraper 30 and PVA membrane 20 at any time, can guarantee that scraper 30 fits all the time in PVA membrane 20 surface in long-time use, thereby can be reliable strike off PVA membrane 20 remaining boric acid solution in surface, improve the yield of product.

Fig. 2 is a schematic structural diagram of a part of polarizer production equipment provided in an embodiment of the present application. As shown in fig. 1 to 2, the polarizer manufacturing apparatus provided in the embodiment of the present application includes a functional bath 10, a plurality of blades 30, and a blade holder 40.

The functional bath 10 is used for treating the PVA film 20, and for example, the PVA film 20 is subjected to treatments such as washing, swelling, dyeing, stretching, and color correction in the functional bath 10 to impart a polarizing function to the PVA film 20.

The plurality of scrapers 30 are used for scraping off the solution (boric acid solution, etc.) attached to the two surfaces of the PVA film 20 from the functional tank 10, wherein the scrapers 30 are movably disposed on the functional tank 10 through a scraper seat 40, and the scraper seat 40 is used for adjusting the distance and the angle between the scrapers 30 and the PVA film 20 so as to change the position relationship between the scrapers 30 and the PVA film 20.

Specifically, in the embodiment of the present application, each of the two scrapers 30 and the scraper seat 40 includes two scrapers 30, one end of the same side of the two scrapers 30 is movably mounted on one scraper seat 40, the other end of the same side of the two scrapers 30 is movably mounted on the other scraper seat 40, and a gap for the PVA film 20 to pass through is formed between the two scrapers 30, so as to scrape off the solution attached to the two surfaces of the PVA film 20 when the PVA film 20 coming out of the functional slot 10 passes through the gap.

Alternatively, in the embodiment of the present application, the number of the scrapers 30 may be multiple, for example, 3, 4, or 6, and the scrapers 30 may be divided into two groups, which are respectively disposed on two surfaces of the PVA film 20, and a gap for passing the PVA film 20 is formed between the two groups of the scrapers 30.

According to the production facility of polaroid that this application embodiment provided, in the production process of polaroid, PVA film 20 unreels the back, at first can get into function groove 10 and wash processing such as swell, dyeing, extension, complementary color to make PVA film 20 have polarizing function, secondly utilize scraper 30 to scrape the solution that two surfaces of PVA film 20 that have polarizing function that come out from function groove 10 adhere to, later stoving PVA film 20, make it can compound in order to form the polaroid with the double-deck TAC membrane 80 that has preprocessed, pressure sensitive adhesive, from type membrane, protection film 90. In this in-process, because distance and angle between scraper 30 and the PVA membrane 20 can be adjusted, make the staff adjust the position between scraper 30 and the PVA membrane 20 at any time, thereby in the long-time use of production facility, can guarantee that scraper 30 laminates in two surfaces of PVA membrane 20 all the time, and then make scraper 30 can be reliable strike off PVA membrane 20 surperficial remaining boric acid solution, avoid PVA membrane 20 surface to form small crystallization after drying, promote the production yield of polaroid, and production cost is reduced.

The embodiment of the application provides a production facility of polaroid has simple structure, advantages such as convenient operation, through set up the scraper seat 40 of adjusting the distance and angle between scraper 30 and PVA membrane 20 on function groove 10, make the position between scraper 30 and PVA membrane 20 adjustable, make the staff can adjust the position of scraper 30 at any time in the long-time use of production facility, thereby can guarantee that scraper 30 laminates in two surfaces of PVA membrane 20 all the time, make scraper 30 can be reliable strike off remaining boric acid solution in PVA membrane 20 surface, further improve scraper 30's the effect of striking off, promote the production yield of polaroid, reduce the manufacturing cost of polaroid.

Optionally, in the embodiment of the present application, a driving roller 60 is further disposed on the doctor blade holder 40, and the driving roller 60 can move the PVA film 20 out of the functional tank 10 to facilitate the PVA film 20 to perform the compounding operation.

Fig. 3 is a schematic structural diagram of a scraper blade and a scraper seat according to an embodiment of the present application. Fig. 4 is a partially enlarged schematic view at a in fig. 3. Fig. 5 is a schematic front view of a scraper and a scraper seat according to an embodiment of the present application. Fig. 6 is an exploded view of a doctor blade and a doctor holder according to an embodiment of the present disclosure. The following describes a specific structure of the polarizer production apparatus provided in the embodiments of the present application with reference to fig. 1 to 6.

Further, as shown in fig. 1-6, in the present embodiment, the scraper 30 is rotatably and translatably disposed on the scraper seat 40. Through above setting, rotate scraper 30 and translation scraper 30 and can make things convenient for angle and distance between efficient regulation scraper 30 and the PVA membrane 20, change the contact position between scraper 30 and the PVA membrane 20, can laminate scraper 30 on PVA membrane 20 surface all the time to reach better effect of scraping.

The embodiment of the present application does not limit the specific form of the rotation and translation of the scraper 30, and the scraper 30 can rotate relative to the PVA film 20 while adjusting the angle, and can translate relative to the PVA film 20 to adjust the distance.

As shown in fig. 1 to 6, in the embodiment of the present application, the scraper seat 40 includes a supporting plate 41 and a moving device 42, the scraper 30 is mounted on an inner side surface of the supporting plate 41 through a clamping seat 50, and the moving device 42 is mounted on the inner side surface of the supporting plate 41 and drives the scraper 30 to translate through the clamping seat 50.

Specifically, in the embodiment of the present application, the moving device 42 includes an air cylinder 421 and a sliding plate 422 slidably disposed on an inner side surface of the supporting plate 41, a piston rod of the air cylinder 421 is connected to the clamping seat 50 through the sliding plate 422, and the sliding plate 422 slides on the supporting plate 41 due to the telescopic motion of the piston rod. By the above arrangement, the stability of the translation of the scraper 30 can be ensured.

Here, the side of the sliding plate 422 facing the supporting plate 41 has a U-shaped groove, the inner side of the supporting plate 41 is provided with a sliding rail 412 matching with the U-shaped groove, the holder 50 holds the fixed scraper 30, and the sliding plate 422 is connected with the scraper 30 through the holder 50.

When the piston rod of the cylinder 421 extends, the piston rod pushes the sliding plate 422 to slide on the sliding rail 412, so that the holder 50 drives the scraper 30 to move toward the direction close to the PVA film 20, and the scraper 30 is closer to the surface of the PVA film 20. When the piston rod of the cylinder 421 retracts, the piston rod drives the sliding plate 422 to slide on the sliding rail 412 in the opposite direction, so that the holder 50 drives the scraper 30 to move in the direction away from the PVA film 20, and the scraper 30 is away from the surface of the PVA film 20. That is, the distance between the scraper 30 and the PVA film 20 is adjusted by controlling the extension and retraction of the piston rod of the cylinder 421, so that the scraper 30 can be located at a proper position, that is, the scraping effect can be ensured without damaging the surface of the PVA film 20.

As shown in fig. 1-6, in the embodiment of the present application, the holder 50 is rotatably disposed on the sliding plate 422 through a rotating shaft 51, the supporting plate 41 is provided with an avoiding slot 411, the rotating shaft 51 passes through the avoiding slot 411 and is connected to the rotating device 43, and the rotating device 43 is configured to drive the scraper 30 to rotate through the holder 50. That is, the rotating device 43 is disposed on the outer side of the supporting plate 41, the moving device 42 is disposed on the inner side of the supporting plate 41, and the rotating shaft 51 of the holder 50 sequentially passes through the sliding plate 422 and the supporting plate 41 to be connected to the rotating device 43. Through the arrangement, the moving device 42 and the rotating device 43 do not interfere with each other, so that a worker can simultaneously adjust the distance and the angle between the scraper 30 and the PVA film 20.

Here, the sliding plate 422 has a notch 422a, the rotating shaft 51 sequentially passes through the notch 422a and the avoiding slot 411 to connect with the rotating device 43, so that the moving device 42 and the rotating device 43 are respectively located on the inner side surface and the outer side surface of the supporting plate 41, the rotating device 43 is also provided with the sliding plate 422, so that the rotating device 43 is slidably arranged on the outer side surface of the supporting plate 41, and thus when the moving device 42 located on the inner side surface of the supporting plate 41 drives the holding base 50 to move, the rotating device 43 located on the outer side surface of the supporting plate 41 is also driven to move.

It should be noted that, in the embodiment of the present application, the extending direction of the avoiding slot 411 on the supporting plate 41 is the same as the extending direction of the sliding rail 412 on the supporting plate 41, and the length of the avoiding slot 411 is equal to or greater than the length of the moving stroke of the moving device 42, that is, the avoiding slot 411 does not affect the movement of the moving device 42.

Specifically, in the embodiment of the present application, the rotating device 43 includes a handwheel 431 and a speed reducer 432, and the handwheel 431 is connected to the rotating shaft 51 through the speed reducer 432 to drive the scraper 30 to rotate. That is to say, the staff rotates hand wheel 431, can drive pivot 51 through the transmission assembly in speed reducer 432 and rotate to can make scraper 30 rotate, with the angle between regulation scraper 30 and the PVA film 20, make scraper 30 more laminate PVA film 20, reach the better effect of scraping water.

Alternatively, in the embodiment of the present application, after the angle between the scraper 30 and the PVA film 20 is adjusted, the rotating shaft 51 may be fixed by a self-locking function of the reducer 432.

Optionally, in the embodiment of the present application, a fastening handle 433 is further disposed on the rotating device 43, and after the angle between the scraper 30 and the PVA film 20 is adjusted, the rotating shaft 51 can be fixed by fastening the fastening handle 433, so as to prevent the rotating shaft 51 from rotating further.

Optionally, in the embodiment of the present application, a positioning member (not shown in the figure) is further disposed on the rotating device 43, and when the angle between the scraper 30 and the PVA film 20 is adjusted, the rotating angle of the scraper 30 can be determined according to the positioning member (a pointer and a dial), so as to facilitate the adjustment of the rotating angle of the scraper 30 by the worker.

Fig. 7 is a schematic side view of a scraper blade according to an embodiment of the present application. As shown in fig. 7, in the embodiment of the present application, the cross section of the scraper 30 is rectangular, and a planar chamfer 31 is disposed between two adjacent edges, and the planar chamfer 31 is attached to the surface of the PVA film 20, so that the scraper 30 can achieve a better scraping effect.

Specifically, in the embodiment of the present application, the planar chamfer 31 is a 45-degree chamfer, and the length of the right-angle side of the chamfer ranges from 2.8mm to 3.5mm.

When using the production facility of polaroid, the staff can rotate scraper 30 through rotary device 43, makes the plane chamfer 31 of scraper 30 parallel with PVA membrane 20 surface, and rethread mobile device 42 removes scraper 30, makes the plane chamfer 31 of scraper 30 and PVA membrane 20 surface laminating, and when making the driving roller 60 that sets up on backup pad 41 shift out PVA membrane 20, scraper 30 can reach better scraping effect.

Alternatively, in the present embodiment, the scraper 30 is made of any one of glass, carbon fiber, ceramic, and metal.

Preferably, in the present embodiment, the doctor blade 30 is a glass doctor blade.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A production facility of polaroid, its characterized in that includes:

a functional tank (10) for processing a PVA film (20) so as to make the PVA film (20) have a polarization function;

a plurality of scrapers (30) for scraping off the solution adhering to both surfaces of the PVA film (20) coming out of the functional tank (10); scraper (30) through scraper seat (40) mobilizable set up in on function groove (10), scraper seat (40) are used for adjusting scraper (30) with distance and angle between PVA membrane (20).

2. The production apparatus according to claim 1, wherein the two scrapers (30) and the two scraper seats (40) are provided, one end of each of the two scrapers (30) is movably mounted on one of the scraper seats (40), the other end of each of the two scrapers (30) is movably mounted on the other scraper seat (40), and a gap for passing the PVA film (20) is formed between the two scrapers (30).

3. The production apparatus according to claim 1, wherein the doctor blade (30) is rotatably and translatably arranged on the doctor blade seat (40).

4. The production apparatus according to claim 3, wherein the scraper seat (40) comprises a support plate (41) and a moving device (42), the scraper (30) is mounted on an inner side surface of the support plate (41) through a clamping seat (50), and the moving device (42) is mounted on an inner side of the support plate (41) and is used for driving the scraper (30) to translate through the clamping seat (50).

5. The production equipment according to claim 4, wherein the moving device (42) comprises an air cylinder (421) and a sliding plate (422) slidably disposed on the inner side surface of the supporting plate (41), a piston rod of the air cylinder (421) is connected to the clamping seat (50) through the sliding plate (422), and the sliding plate (422) is driven to slide on the supporting plate (41) by the telescopic motion of the piston rod.

6. The production equipment according to claim 5, wherein the clamping seat (50) is rotatably arranged on the sliding plate (422) through a rotating shaft (51), an avoiding groove (411) is formed in the supporting plate (41), the rotating shaft (51) penetrates through the avoiding groove (411) to be connected with a rotating device (43), and the rotating device (43) is used for driving the clamping seat (50) to rotate.

7. The production equipment according to claim 6, wherein the rotating device (43) comprises a hand wheel (431) and a speed reducer (432), and the hand wheel (431) is connected with the rotating shaft (51) through the speed reducer (432) to drive the scraper (30) to rotate.

8. The production plant according to any one of claims 1 to 7, characterized in that the doctor blade (30) has a rectangular cross section with a planar chamfer (31) between adjacent edges, the planar chamfer (31) being conformed to the PVA film (20).

9. The production apparatus according to any one of claims 1 to 7, wherein the doctor blade holder (40) is provided with a driving roller (60) for moving the PVA film (20) out of the functional tank (10).

10. A production device according to any one of claims 1-7, characterized in that the doctor blade (30) consists of any one of glass, carbon fibre, ceramic, metal.

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