CN219544003U

CN219544003U - Thermal insulation device for transverse stretching of optical film and transverse stretching device

Info

Publication number: CN219544003U
Application number: CN202320118496.7U
Authority: CN
Inventors: 盛增; 潘恩超; 吕超宇; 王硕; 孙敏
Original assignee: Jiangsu Huizhi New Material Technology Co ltd
Current assignee: Jiangsu Huizhi New Material Technology Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-08-18
Anticipated expiration: 2033-02-06

Abstract

The utility model discloses a heat insulation device of transverse stretching equipment for an optical film, which comprises a shell, a heat insulation device and a heat insulation device, wherein the shell is provided with a film through port communicated with the film through port; the air outlet pieces are arranged in pairs at the film through openings and are connected with the shell, and a film penetrating interval is arranged between the air nozzles of the air outlet pieces; the casing is provided with circulation air supplementing box, air inlet pipeline and return air pipeline, the air inlet pipeline with air-out spare intercommunication, the first return air inlet of return air pipeline distributes in the inner wall of casing along the membrane width direction, and air inlet pipeline and return air pipeline all communicate with circulation air supplementing box, and the air intake of circulation air supplementing box is connected the fan. A transverse stretching device is also disclosed. The heat insulation device for transverse stretching of the optical film is reasonable in structure, the shell is provided with the air inlet pipeline and the air return pipeline which are communicated with the circulating air supplementing box, gas in the shell is recovered to flow back to the circulating air supplementing box through the air return pipeline, and then the air is sent into the air outlet piece through the air inlet pipeline, so that an air curtain is formed to achieve the heat insulation effect between adjacent functional areas, resources are saved, energy consumption is reduced, and economic benefit is improved.

Description

Thermal insulation device for transverse stretching of optical film and transverse stretching device

Technical Field

The utility model relates to the technical field of film production equipment, in particular to a heat insulation device for transverse stretching of an optical film and a transverse stretching device.

Background

In the transverse stretching arrangement of optical film production, the function exerted by each functional zone through which the optical film passes is different, so the temperature arrangement of each functional zone is also different. Often, the adjacent functional areas are arranged, so that the temperature of the adjacent functional areas has a temperature difference, heat of the functional areas with high temperature flows to the functional areas with low temperature, heat channeling phenomenon easily occurs between the adjacent functional areas, and the defects of uneven or broken film and the like are caused when the optical film is transversely stretched in the corresponding functional areas, so that the quality of the optical film is affected. The baffle is generally used for separating adjacent functional areas for heat insulation, although the baffle surface of the baffle can separate most of heat channeling, a gap is reserved between the baffles above and below the film guide channel, and heat channeling still exists between the adjacent functional areas.

CN206430314U patent discloses a curtain thermal insulation wall, and the air outlet nozzle is used for blowing air to the plane of the film to form a curtain, so that the thermal insulation problem of heat channeling of adjacent temperature areas is solved.

The prior art has the defects that:

the air inlet pipeline communicated with the air outlet nozzle is fixedly connected with the outer shell, so that the later maintenance of the air curtain heat insulation device is inconvenient;

the air blown by the air outlet nozzle is directly blown on the surface of the optical film by the fan, so that dust in the air is easily adhered on the surface of the optical film, and the apparent quality of the optical film is negatively influenced; the heat on the surface of the optical film is taken away by the gas blown by the air outlet nozzle and is not recycled, so that energy is wasted; the fan is high in power for conveying air, and energy waste is easily caused.

Therefore, there is a need for an improvement in the prior art thermal insulation device for transverse stretching of optical films.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a heat insulation device for transversely stretching an optical film, wherein an air inlet pipeline and an air return pipeline which are communicated with a circulating air supplementing box are arranged on a shell, so that gas in the shell is recycled, resources are saved, and energy consumption is reduced.

In order to achieve the technical effects, the technical scheme of the utility model is as follows: a heat insulating device of a transverse stretching device for an optical film comprises,

the shell is provided with a communicated film passing port;

the air outlet pieces are arranged in pairs at the film passing openings and connected with the shell, and a film penetrating interval is arranged between the air nozzles of the air outlet pieces;

the shell is provided with circulation air supplementing box, air inlet pipeline and return air pipeline, the air inlet pipeline with air-out spare intercommunication, the first return air inlet of return air pipeline along the membrane width direction distribute in the inner wall of shell, air inlet pipeline and return air pipeline all communicate with circulation air supplementing box, the air intake connection fan of circulation air supplementing box.

The preferable technical scheme is that the air outlet piece is rotationally connected with the shell through a rotating shaft, and the rotating shaft is arranged along the width direction of the film.

The preferable technical scheme is that the air outlet piece is provided with a heater.

The preferable technical scheme is that the air outlet piece comprises a baffle rotationally connected with the shell, an air outlet channel is penetrated through the baffle, one end of the air outlet channel is communicated with the air inlet pipeline, and the other end of the air outlet channel is provided with the air nozzle.

The preferable technical scheme is that the circulating air supplementing box comprises a pair of air returning chambers and air outlet chambers, the pair of air returning chambers and the pair of air outlet chambers are arranged in one-to-one correspondence with the film passing openings, the air returning chambers are communicated with the air returning pipeline, and the air outlet chambers are communicated with the air inlet pipeline.

The preferable technical scheme is that an adjacent mixed air inlet chamber and a buffer chamber are arranged between the air return chamber and the air outlet chamber, a first air flow filter is arranged between the mixed air inlet chamber and the air return chamber, and a second air flow filter is arranged between the buffer chamber and the air outlet chamber.

The preferable technical scheme is that the air inlet is communicated with the mixed air inlet chamber.

The preferable technical scheme is that the return air chamber is clamped between the air outlet chambers.

The second object of the present utility model is to overcome the drawbacks of the prior art and to provide a transverse stretching device comprising a heated transverse stretching portion provided with the above-mentioned heat insulating device for transverse stretching of an optical film arranged along the film guiding direction.

The preferable technical scheme is that the heating transverse stretching part comprises a plurality of heating functional units, and the heat insulation device for transverse stretching of the optical film is clamped between the adjacent heating functional units.

The utility model has the advantages and beneficial effects that:

the heat insulation device for transverse stretching of the optical film is reasonable in structure, the shell is provided with the air inlet pipeline and the air return pipeline which are communicated with the circulating air supplementing box, gas in the shell is recovered to flow back to the circulating air supplementing box through the air return pipeline, and then the air is sent into the air outlet piece through the air inlet pipeline, so that an air curtain is formed to achieve the heat insulation effect between adjacent functional areas, resources are saved, energy consumption is reduced, and economic benefit is improved.

Drawings

FIG. 1 is a perspective view of a thermal insulation device for transverse stretching of an optical film according to the present utility model;

FIG. 2 is another perspective view of the thermal insulation device for transverse stretching of an optical film of the present utility model;

FIG. 3 is a schematic view of the structure of the rotation state of the air outlet member of the heat insulating device for transverse stretching of the optical film;

FIG. 4 is an interior display view of the housing of FIG. 1;

FIG. 5 is an illustration of the interior intake duct and the air outlet of the housing of FIG. 4;

FIG. 6 is an illustration of the interior return air duct and the air outlet of the housing of FIG. 4;

FIG. 7 is a cross-sectional view of the air outlet member in the thickness direction;

FIG. 8 is a schematic perspective view of a circulating make-up box;

FIG. 9 is a schematic perspective view of the alternate angle of FIG. 8;

fig. 10 is another schematic perspective view of the circulation air supplementing box.

In the figure: 1. a housing; 2. an air outlet piece; 3. circulating a supplementing box; 4. a blower; 5. a heater; 10. a membrane opening; 11. an air inlet pipeline; 12. a return air duct; 20. a wind nozzle; 21. the first air outlet piece; 22. the second air outlet piece; 23. a bending piece; 31. an air return chamber; 32. an air outlet chamber; 33. mixing an air inlet chamber; 34. a buffer chamber; 111. a first branch air inlet duct; 112. a second branch air inlet pipeline; 120. a first return air inlet; 301. a first air flow filter; 302. a second gas flow filter; 310. a second return air inlet; 330. and an air inlet.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

The "top side" and "bottom side" are referred to with respect to the normal use of the thermal barrier for transverse stretching of an optical film, and are merely for convenience of description and to simplify description, and are not indicative or implying that the device or element in question must have a particular orientation or be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.

As shown in fig. 1 to 10, the heat insulation device for transverse stretching of an optical film comprises a shell 1 and an air outlet piece 2 connected with the shell 1, wherein the shell 1 is provided with communicated film through holes 10, the air outlet piece 2 is arranged in pairs at the film through holes 10, a film penetrating interval is arranged between air nozzles 20 of the air outlet piece 2, namely, the shell 1 is provided with two groups of film through holes 10; both sets of through-film openings 10 are provided with pairs of air outlet members 2.

As shown in fig. 1-2, the casing 1 is provided with a circulating air supplementing box 3, an air inlet pipeline 11 and an air return pipeline 12, the air inlet pipeline 11 is communicated with the air outlet piece 2, the first air return opening 120 of the air return pipeline 12 is distributed on the inner wall of the casing 1 along the film width direction, the air inlet pipeline 11 and the air return pipeline 12 are communicated with the circulating air supplementing box 3, and an air inlet 330 of the circulating air supplementing box 3 is connected with the fan 3. In order to simplify the outer structure of the housing 1, the housing 1 is rectangular parallelepiped. In order to reduce the heat loss of the flowing gas and optimize the arrangement of the space structure, the air inlet pipeline 11 and the air return pipeline 12 are arranged in the shell 1. The air inlet pipeline 11 and the air return pipeline 12 are respectively arranged in one-to-one correspondence with the two groups of film through holes 10.

As shown in fig. 4 to 7, the first air return openings 120 of the air return duct 12 are uniformly distributed on the inner wall of the casing 1 along the film width direction, which is more beneficial to the recovery of the air in the casing 1. The first air return openings 120 are formed by a plurality of through holes in a row, and further, the first air return openings 120 are arranged in a row and are respectively arranged on two side walls of the film through opening 10 along the film width direction. The air inlet pipeline 11 comprises a first branch air inlet pipeline 111 and a second branch air inlet pipeline 112, one of the paired air outlet pieces 2 is a first air outlet piece 21, the other is a second air outlet piece 22, the first branch air inlet pipeline 111 is communicated with the first air outlet piece 21, and the second branch air inlet pipeline 112 is communicated with the second air outlet piece 22, so that the consistency of the temperature and the uniformity of the air flow sent by the paired air outlet pieces 2 is ensured, namely the consistency of the temperature of the upper surface and the lower surface of the film along the width direction is ensured.

As shown in fig. 3, in a preferred embodiment, the air outlet member 2 is rotatably connected to the housing through a rotating shaft, and the rotating shaft is disposed along the width direction of the film, so as to facilitate adjustment of the film passing interval between the air nozzles 20 of the air outlet member 2 for maintenance. Because of the dislocation of the spatial arrangement, the air inlet pipeline 11 is connected with the air outlet piece 2 through the bending piece 23, and the bending piece 23 can be made of hard materials or soft materials. When the bending piece 23 is made of hard material, the air inlet of the air outlet piece 2 is communicated with the air outlet of the bending piece 23. When the bending member 23 is made of soft material, such as a hose. In order to widen the field of view of the overhaul of the casing 1 and to avoid the extension of the depth of the casing 1, the air outlet member 2 is turned inwards, and the casing 1 is provided with a driving mechanism for rotating the air outlet member 2.

As shown in fig. 7, the air outlet member 2 includes a baffle rotatably connected to the housing 1, through which an air outlet passage is provided, one end of the air outlet passage is connected to the air inlet duct, and the other end is provided with a nozzle 20. The air outlet channel penetrates through the baffle, so that uniformity of air outlet is effectively guaranteed, and heat is preserved.

In order to ensure that the temperature of the film in the shell is between the temperature before entering the shell 1 and the temperature after exiting the shell 1, the shaping of the film is facilitated, and a heater 5 is arranged in the shell 1, an air inlet pipeline 11 or an air outlet piece 2. In a preferred embodiment, the air outlet member 2 is provided with a heater 5, and the air outlet of the air nozzle 20 is directly contacted with the upper and lower surfaces of the film, so that heat transfer is more direct and efficient.

The circulating air supplementing boxes 3 are arranged in pairs, namely the film through holes 10 correspond to one of the circulating air supplementing boxes 3 arranged in pairs, the air supplementing flows of the two groups of film through holes 10 independently control the temperature and the flow, the circulating air supplementing boxes 3 comprise an air return chamber 31 and an air outlet chamber 32, the air return chamber 31 is communicated with the air return pipeline 12, and the air outlet chamber 32 is communicated with the air inlet pipeline 11.

In a preferred embodiment, the circulating air supplementing box 3 comprises a pair of air return chambers 31 and air outlet chambers 32, the pair of air return chambers 31 and the air outlet chambers 32 are arranged in one-to-one correspondence with the film through holes 10, the air return chambers 31 are communicated with the air return pipeline 12, and the air outlet chambers 32 are communicated with the air inlet pipeline 11. The air quantity required by the air outlet pieces 2 of the two groups of film passing openings 10 is provided by the air flow in the same circulating air supplementing box 3, so that the temperature and the flow of an air curtain formed when the film enters the shell 1 and exits the shell 1 are consistent, and the apparent mass of the film is kept consistent.

As shown in fig. 8 to 10, a mixing air inlet chamber 33 and a buffer chamber 34 are arranged between the air return chamber 31 and the air outlet chamber 32, a first air flow filter member 301 is arranged between the mixing air inlet chamber 33 and the air return chamber 31, and a second air flow filter member 302 is arranged between the buffer chamber 34 and the air outlet chamber 32; the air inlet 330 communicates with the mixing air inlet chamber 33. The return air chamber 31 is sandwiched between the outlet air chambers 32. Which helps to store the temperature of the air returning through the return air duct 12 and thus prevents the air pressure of the check plenum 31 from falling too rapidly. Meanwhile, the back flow gas and the air outlet gas are effectively subjected to heat exchange, so that the energy utilization rate is improved, and the energy consumption is reduced. The gas flowing back through the return air pipeline 12 removes impurities such as oligomer particles on the surface of the membrane through the first gas flow filter 301, and the return gas is mixed with external air in the mixed air inlet chamber 33, so that on one hand, the temperature of the mixed air inlet chamber 33 is reduced, and the gas flow of the return air chamber 31 is facilitated to flow to the air outlet chamber 32; on the other hand, the air is supplemented to ensure the air pressure of the air outlet. The second air flow filter 302 further purifies the air mixed in the air inlet chamber 33, and dust impurities carried by the outside air are removed, so that the air flow sent out by the air nozzle 20 of the air outlet member 2 is ensured to be clean, and the apparent quality of the membrane is improved. The buffer chamber 34 further expands the storage volume of the mixed air pressure, reduces the pressure, and ensures that the air flow from the air return chamber 31 enters the air outlet chamber 32. The second air return opening 310 of the circulating air supplementing box 3 is arranged at the bottom of the air return chamber 31, the air inlet 330 of the circulating air supplementing box 3 is arranged at the top of the mixed air inlet chamber 33, and the air outlet of the circulating air supplementing box 3 is arranged at the bottom of the air outlet chamber 32.

The transverse stretching device comprises a heating transverse stretching part, and the heating transverse stretching part is provided with the above-mentioned heat insulating device for transverse stretching of the optical film, which is arranged along the film guiding direction, and the extending direction of the film through opening 10 is consistent with the film width direction. The heating transverse stretching part comprises a plurality of heating functional units, and the heat insulation device for transverse stretching of the optical film is clamped between the adjacent heating functional units.

The heat insulation device for transverse stretching of the optical film is applied to the transverse stretching device, so that the phenomenon of air heat channeling of adjacent functional areas of the transverse stretching part is effectively prevented from being heated, the gas sent out by the air outlet piece 2 is recycled, the phenomenon of gas channeling sent out by the air outlet piece 2 is further reduced, and the loss of gas heat is reduced. Because the air in the shell 1 is recycled for air supplement, a fan is not required to be used for a long time and high power, the energy consumption is reduced, and the production economic benefit is improved. The arrangement structure effectively prevents air flow from being discharged from the second air return opening 310 of the circulating air supplementing box 3 through the air return opening 31, the air outlet opening 32, the mixed air inlet opening 33 and the buffer chamber 34 which are arranged on the circulating air supplementing box 3. The air flow filter arranged through the circulating air supplementing box 3 effectively ensures that the air flow sent out by the air outlet piece 2 is clean and free of impurities.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. A heat insulating device for transverse stretching of an optical film comprises,

the shell (1) is provided with a communicated film passing port (10);

the air outlet pieces (2) are arranged in pairs at the film passing openings (10) and are connected with the shell (1), and a film penetrating interval is arranged between air nozzles (20) of the air outlet pieces (2);

the novel circulating air supply box is characterized in that the casing (1) is provided with a circulating air supply box (3), an air inlet pipeline (11) and an air return pipeline (12), the air inlet pipeline (11) is communicated with the air outlet piece (2), a first air return opening (120) of the air return pipeline (12) is distributed on the inner wall of the casing (1) along the film width direction, the air inlet pipeline (11) and the air return pipeline (12) are communicated with the circulating air supply box (3), and an air inlet (330) of the circulating air supply box (3) is connected with a fan (4).

2. The heat insulating device for transverse stretching of an optical film according to claim 1, wherein the air outlet member (2) is rotatably connected with the housing (1) through a rotation shaft, and the rotation shaft is provided along the film width direction.

3. The heat insulating device for transverse stretching of an optical film according to claim 1, wherein the air outlet member (2) is provided with a heater (5).

4. A heat insulating device for transverse stretching of an optical film according to claim 1 or 3, wherein the air outlet member (2) comprises a baffle rotatably connected with the housing (1), the baffle is provided with an air outlet passage in a penetrating manner, one end of the air outlet passage is communicated with the air inlet pipeline (11), and the other end of the air outlet passage is provided with the air nozzle (20).

5. The heat insulation device for transverse stretching of an optical film according to claim 1, wherein the circulating air supplementing box (3) comprises a pair of air returning chambers (31) and air outlet chambers (32), the pair of air returning chambers (31) and the pair of air outlet chambers (32) are arranged in one-to-one correspondence with the film passing openings (10), the air returning chambers (31) are communicated with the air returning pipeline (12), and the air outlet chambers (32) are communicated with the air inlet pipeline (11).

6. The heat insulation device for transverse stretching of an optical film according to claim 5, wherein a mixing air inlet chamber (33) and a buffer chamber (34) which are adjacent are arranged between the air return chamber (31) and the air outlet chamber (32), a first air flow filter (301) is arranged between the mixing air inlet chamber (33) and the air return chamber (31), and a second air flow filter (302) is arranged between the buffer chamber (34) and the air outlet chamber (32).

7. The heat insulating device for stretching a transverse direction of an optical film as recited in claim 6, wherein the air inlet (330) is in communication with the mixed air inlet chamber (33).

8. The heat insulating device for transverse stretching of an optical film according to claim 5, wherein the return air chamber (31) is sandwiched between the air outlet chambers (32).

9. A transverse stretching apparatus comprising a heated transverse stretching portion provided with the heat insulating device for transverse stretching of an optical film according to any one of claims 1 to 8 arranged in a film guiding direction.

10. The lateral stretching device as recited in claim 9, wherein said heating lateral stretching portion includes a plurality of heating function units, and said thermal insulation device for lateral stretching of the optical film is interposed between adjacent ones of said heating function units.