CN219965430U - Coating equipment for preparing uniform film - Google Patents

Abstract

The utility model discloses coating equipment for preparing a uniform film, and relates to the technical field of film preparation. The coating equipment for preparing the uniform film comprises a base, a second blocking part, a knife rest, a scraper and two first blocking parts. The two first blocking parts are oppositely arranged on the base, the opposite side surfaces of the two first blocking parts are provided with blocking surfaces, and the blocking surfaces and the top surface of the base form a working groove; the second blocking parts are arranged on the base and are in seamless connection with the two first blocking parts to form a U-shaped structure; the cutter rest is arranged on the first blocking part and can slide along the length direction of the first blocking part; the scraper sets up in the knife rest, and the cutting edge of scraper is towards the base, and the cutting edge of scraper has the space with the top surface of base. When the coating equipment is used for preparing the film, under the blocking action of the first blocking part and the second blocking part, the liquid raw material cannot flow around at will, the thickness of the prepared film is uniform, and the quality of the film is greatly improved.

Description

Coating equipment for preparing uniform film

Technical Field

The utility model relates to the technical field of film preparation, in particular to coating equipment for preparing uniform films.

Background

The film is widely applied to various industries, such as preservative films used in daily life, mulching films used in agriculture, mobile phone protection films used in mobile phone industry, dressing films used in medical industry, film materials applied in battery industry, photoresist coatings applied in semiconductor industry and the like.

The automatic film coating equipment is equipment capable of preparing the film, most of the automatic film coating equipment on the market at present stably operates by utilizing a scraper, the raw materials piled on a working platform are pushed to be flat and spread into a plane with uniform thickness, and the required film can be formed after the raw materials are solidified through post-treatment. However, most of working platforms of the existing automatic film coating equipment are plate-shaped structures with flat tops, and when films are prepared, glue solution flows around, so that the thickness is difficult to control.

In summary, how to change the uneven thickness of the thin film is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present utility model aims to provide a coating apparatus for preparing a uniform film, in which, when the coating apparatus prepares a film, liquid raw materials do not flow freely around under the blocking effect of a first blocking portion and a second blocking portion, and the thickness of the prepared film is relatively uniform, so that the quality of the film is greatly improved.

In order to achieve the above object, the present utility model provides the following technical solutions:

a coating apparatus for preparing a uniform film, comprising:

a base;

the two first blocking parts are oppositely arranged on the base, the opposite side surfaces of the two first blocking parts are provided with blocking surfaces, and the blocking surfaces and the top surface of the base form a working groove;

the second blocking parts are arranged on the base and are in seamless connection with the two first blocking parts to form a U-shaped structure;

a tool rest which is arranged on the first blocking part and can slide along the length direction of the first blocking part;

the scraper is arranged on the tool rest, the edge part of the scraper faces to the base, and a gap is formed between the edge part of the scraper and the top surface of the base.

Preferably, the base is provided with a third blocking portion, the third blocking portion is opposite to the second blocking portion, the third blocking portion is attached to the two first blocking portions, and the third blocking portion can block the flow of the liquid.

Preferably, a first guiding structure is arranged at one end of the base or the first blocking part, which is provided with the third blocking part, and the third blocking part is slidably arranged on the first guiding structure;

the first blocking part is provided with a first adjuster, and the first adjuster is movably connected with the third blocking part and used for adjusting and fixing the third blocking part.

Preferably, the number of the first regulators is two, and the two first regulators are arranged at the top of the corresponding first blocking part;

and/or the first guide structure is a T-shaped sliding groove, the number of the T-shaped sliding grooves is two, the two T-shaped sliding grooves are positioned at the bottom of the corresponding first blocking part, the third blocking part is provided with two T-shaped sliding blocks, and each T-shaped sliding block is matched with the corresponding T-shaped sliding groove.

Preferably, during the preparation process, the preset height of the third blocking part protruding out of the top surface of the base is substantially equal to the thickness of the wet film before the film to be prepared is dried.

Preferably, a second regulator is arranged at the top of the tool rest, and the second regulator is movably connected with the scraper and is used for regulating the size of the gap.

Preferably, two opposite sides of the first blocking part are vertical surfaces, two first blocking parts are provided with second guiding structures, two opposite sides of the tool rest are coplanar with corresponding sides of the first blocking part, and two guiding parts of the tool rest can be matched with corresponding second guiding structures.

Preferably, the opposite two sides of the tool rest are respectively provided with a third guide structure, and the two sides of the scraper are respectively provided with a second connecting part matched with the third guide structures.

Preferably, the device further comprises a driving assembly, wherein the driving assembly comprises a screw rod, a power piece and a transmission piece;

the transmission piece is contacted or connected with the tool rest so as to push the tool rest to move, and is provided with a thread structure;

the screw rod is arranged at the bottom of the base and can be matched with the thread structure; one end of the screw rod is connected with the power piece and used for driving the screw rod to rotate.

Preferably, the blade part of the scraper is in a structure with a narrow bottom and a wide top.

According to the coating equipment for preparing the uniform film, the base plays a supporting role, the two first blocking parts are oppositely arranged at the top of the base, welding or other arbitrary connection modes can be adopted, the opposite side surfaces of the two blocking parts and the top surface of the base form a working groove, and the tool rest can slide along the length direction of the first blocking parts; the scraper is arranged on the tool rest and can be connected with the tool rest by bolts, welded and the like, so that the scraper can synchronously move along with the tool rest, the side edge of the bottom of the scraper is a blade part required by work, and a gap with a preset size is formed between the blade part of the scraper and the top surface of the base; the second blocking part is arranged between the two first blocking parts, the second blocking part is in seamless connection with the two first blocking parts, welding or other arbitrary connection modes can be adopted, one side opening of the working groove is closed by the second blocking part to form a U-shaped structure, and the heights of the first blocking part and the second blocking part protruding out of the top surface of the base are larger than the thickness of the film to be prepared.

When the scraper is used, the scraper frame is adjusted to one side of the first blocking part, liquid raw materials are placed in the working groove, the scraper frame is moved to slide along the length direction of the first blocking part, so that the liquid raw materials can be pushed to be flat and spread into a plane with uniform thickness by the scraper arranged on the scraper frame, and redundant liquid raw materials can flow out from the opening at the other side of the working groove. When the coating equipment is used for preparing the film, under the blocking action of the first blocking part and the second blocking part, the liquid raw material cannot flow around at will, the thickness of the prepared film is uniform, and the quality of the film is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first position according to a first embodiment of the present utility model;

FIG. 2 is a schematic view of a second position according to a first embodiment of the present utility model;

FIG. 3 is a schematic view of a driving assembly according to a first embodiment of the present utility model;

FIG. 4 is a schematic view of a working tank according to a first embodiment of the present utility model;

FIG. 5 is a schematic view in section A-A of FIG. 4;

FIG. 6 is a schematic view in section B-B of FIG. 4;

FIG. 7 is a schematic view of a blade holder and doctor blade according to a first embodiment of the present utility model;

FIG. 8 is a schematic view of a tool holder according to a first embodiment of the present utility model;

FIG. 9 is a schematic view of a doctor blade according to a first embodiment of the present utility model;

FIG. 10 is a schematic diagram of a second embodiment of the present utility model;

FIG. 11 is a schematic diagram of a working tank according to a second embodiment of the present utility model;

fig. 12 is a schematic structural view of a third blocking portion according to a second embodiment of the present utility model.

In fig. 1 to 12, reference numerals include:

1 is a base, 1-1 is a first guide structure, 2 is a first blocking part, 2-1 is a second guide structure, 3 is a second blocking part, 4 is a tool rest, 4-1 is a guide part, 4-2 is a third guide structure, 5 is a scraper, 5-1 is a second connecting part, 6 is a third blocking part, 6-1 is a T-shaped sliding block, 7 is a first regulator, 8 is a second regulator, 9 is a screw rod, 10 is a power part, and 11 is a transmission part.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The core of the utility model is to provide a coating device for preparing uniform films, when the coating device is used for preparing films, liquid raw materials cannot flow freely around under the blocking effect of a first blocking part and a second blocking part, the prepared films are uniform in thickness, and the quality of the films is greatly improved.

Referring to fig. 1 to 12, the present utility model provides a coating apparatus for preparing a uniform thin film, comprising a base 1, a second blocking portion 3, a blade holder 4, a doctor blade 5, and two first blocking portions 2. The two first blocking parts 2 are oppositely arranged on the base 1, the opposite side surfaces of the two first blocking parts 2 are provided with blocking surfaces, and the blocking surfaces and the top surface of the base 1 form a working groove; the second blocking parts 3 are arranged on the base 1, and the second blocking parts 3 are in seamless connection with the two first blocking parts 2 to form a U-shaped structure; the tool rest 4 is arranged on the first blocking part 2, and the tool rest 4 can slide along the length direction of the first blocking part 2; the scraper 5 is arranged on the tool rest 4, the edge part of the scraper 5 faces the base 1, and a gap is formed between the edge part of the scraper 5 and the top surface of the base 1.

Specifically, as shown in fig. 1 to 3, the base 1 plays a supporting role, two first blocking portions 2 are oppositely disposed at the top of the base 1, for example, the first blocking portions 2 are of a plate-shaped structure or a block-shaped structure, and may be welded or any other connection mode, the opposite planes of the two first blocking portions 2 at the top of the base 1 are used as blocking surfaces, the blocking surfaces and the top surface of the base 1 form a U-shaped working groove, it is noted that the specific shape of the base 1 is not limited, only the top surface of the base 1 for forming the working groove is flat, the tool rest 4 can slide along the length direction of the first blocking portions 2, and the two sides of the tool rest 4 are provided with supporting rods, the tops of the two supporting rods are connected with cross bars, and the bottoms of the supporting rods are provided with sliding structures matched with the first blocking portions 2. It should be noted that, the type of the structure in which the first blocking portions 2 slide in cooperation with the tool holders 4 is not limited, for example, a linear slide or a side surface of the tool holders 4 and the two first blocking portions 2 are engaged, so long as the first blocking portions can cooperate with the tool holders 4; the type of the blade holder 4 is not limited as long as the blade 5 can be supported to perform a function.

The scraper 5 is arranged on the tool rest 4, and can be connected and welded by bolts, so that the scraper 5 can synchronously move along with the tool rest 4, the side edge of the bottom of the scraper 5 is a blade part required by work, and a gap with a preset size is formed between the blade part of the scraper 5 and the top surface of the base 1.

The second blocking portion 3 is arranged between the two first blocking portions 2, the second blocking portion 3 is in seamless connection with the two first blocking portions 2, welding or other arbitrary connection modes can be adopted, one side opening of the working groove is closed by the second blocking portion 3 to form a U-shaped structure, and the heights of the first blocking portion 2 and the second blocking portion 3 protruding out of the top surface of the base 1 are larger than the thickness of a film to be prepared.

It should be noted that the type of the first blocking portion 2 is not limited as long as the above-described functions can be achieved; the type of the second barrier 3 is not limited as long as it can be seamlessly connected with the two first barriers 2.

When the scraper knife is used, the scraper knife 4 is adjusted to one side of the first blocking part 2, liquid raw materials are placed in the working groove, the moving scraper knife 4 slides along the length direction of the first blocking part 2, so that the liquid raw materials can be pushed down by the scraper knife 5 arranged on the scraper knife 4 to be spread into a plane with uniform thickness, and redundant liquid raw materials can flow out from the opening at the other side of the working groove. When the coating equipment is used for preparing the film, under the blocking action of the first blocking part 2 and the second blocking part 3, liquid raw materials cannot flow freely to the periphery, the thickness of the prepared film is uniform, and the quality of the film is greatly improved.

Further, the first blocking portion 2 and the knife rest 4 can be matched with the structure, the structure is arranged on the top surface of the first blocking portion 2 or the side surface deviating from the working groove, liquid raw materials are effectively prevented from flowing to the position of the knife rest 4, which is opposite to the first blocking portion 2 or the base 1, the running stability of the knife rest 4 is improved, the prepared film is more uniform, and the quality of the film is further improved.

On the basis of the above embodiment, the base 1 is provided with the third blocking portion 6, the third blocking portion 6 is opposite to the second blocking portion 3, and the third blocking portion 6 is attached to the two first blocking portions 2, and the third blocking portion 6 can block the flow of the liquid and is used for limiting the thickness of the prepared film.

Specifically, as shown in fig. 4 and 5, the third blocking portion 6 is disposed on the base 1, for example, the third blocking portion 6 is in a plate structure or a block structure, and is welded or any other connection manner, the third blocking portion 6 is disposed between the two first blocking portions 2, and the third blocking portion 6 and the two first blocking portions 2 are also tightly adhered, and further can be welded or bonded, so that the liquid raw material for preparing the film cannot leak from the connection between the third blocking portion 6 and other parts, and then the opening of the other side of the working groove is also closed by the third blocking portion 6, and meanwhile, the height of the top surface of the third blocking portion 6 protruding out of the base 1 is substantially equal to the wet film thickness before the film to be prepared is dried, and the heights of the first blocking portion 2 and the second blocking portion 3 are higher than the height of the third blocking portion 6, so that the volume depth of the working groove is the wet film thickness before the film to be prepared is dried. When the film forming machine is used, under the pushing of the scraper 5, redundant liquid raw materials can flow out from one side of the third blocking part 6, but under the blocking effect of the third blocking part 6, the liquid raw materials on one side of the third blocking part 6 can not flow at will, and after the liquid raw materials are pushed flat by the scraper 5, the thin film with uniform thickness can be prepared after the volatile solvent is dried.

On the basis of the embodiment, one end of the base 1 or the first blocking part 2 provided with the third blocking part 6 is provided with a first guiding structure 1-1, and the third blocking part 6 is slidably arranged on the first guiding structure 1-1; the first blocking part 2 is provided with a first adjuster 7, and the first adjuster 7 is movably connected with the third blocking part 6 and is used for adjusting and fixing the third blocking part 6.

Specifically, as shown in fig. 10 to 12, the base 1 or the first blocking portion 2 is provided with the first guide structure 1-1 at one end where the third blocking portion 6 is provided, optionally, the first guide structure 1-1 is provided at a side surface of the base 1 in a vertical direction, or an opening is provided at a bottom of the base 1 as the first guide structure 1-1, the third blocking portion 6 may be inserted into the first guide structure 1-1, and at the same time, a height of the third blocking portion 6 higher than an upper surface of the base 1 may be adjusted as needed, or a chute is provided at a position opposite to the two first blocking portions 2, the chute is used as the first guide structure 1-1, and the third blocking portion 6 may be inserted into the first guide structure 1-1, and at the same time, a height of the third blocking portion 6 higher than the upper surface of the base 1 may be adjusted as needed; the side surface of the third blocking part 6 opposite to the base 1 is provided with a first connecting part, and the first connecting part is matched with the first guide structure 1-1, so that the third blocking part 6 can longitudinally move, and the protruding height of the upper edge of the third blocking part 6 can be adjusted, and the specific type of the first guide structure 1-1, such as a linear slide rail, a slide groove and the like, is not limited; a through hole is provided in the vertical direction above the first blocking portion 2, a screw hole which can be aligned with the above-mentioned through hole is provided in the vertical direction above the third blocking portion 6, and the first adjuster 7 is provided in the above-mentioned through hole and screw hole, so that screwing the first adjuster 7 can move the third blocking portion 6 and fix it at a preset position. The number of first regulators 7 is not limited as long as the above-described functions can be realized. So set up, the height that the third was blocked 6 protrusion base 1 top surface can be adjusted, and the volume degree of depth of above-mentioned working groove can be adjusted promptly, then change suitable scraper 5 or knife rest 4, or adjust the position of scraper 5 and can prepare the film of arbitrary thickness, very big improvement practicality and the commonality of this coating unit.

On the basis of the above embodiment, the number of the first regulators 7 is two, and the two first regulators 7 are arranged on the top of the corresponding first blocking part 2; and/or the first guiding structure 1-1 is a T-shaped chute, the number of the T-shaped chute is two, the two T-shaped chutes are positioned at the bottom of the corresponding first blocking part 2, the third blocking part 6 is provided with two T-shaped sliding blocks 6-1, and each T-shaped sliding block 6-1 is matched with the corresponding T-shaped chute.

Specifically, as shown in fig. 10, a first regulator 7 is respectively arranged on the two first blocking parts 2, when the third blocking part 6 needs to be regulated, the two first regulators 7 are respectively or simultaneously regulated, the operation is simple and convenient, the top surface of the third blocking part 6 is favorably leveled, the redundant liquid raw materials can be ensured to completely flow out, and the quality of the prepared film is effectively ensured; the first guiding structure 1-1 adopts T-shaped sliding grooves, the two T-shaped sliding grooves are positioned below the corresponding first blocking parts 2 and matched with the corresponding first blocking parts, T-shaped sliding blocks 6-1 which can slide in cooperation with the T-shaped sliding grooves are machined at corresponding positions of the third blocking parts 6, and the two T-shaped sliding blocks 6-1 are matched with the corresponding T-shaped sliding grooves, so that the third blocking parts 6 can slide stably, the processing is convenient, and the cost is low.

On the basis of the above embodiment, after the third blocking portion 6 is fixed to the base 1 or the third blocking portion 6 is adjusted and fixed to the base 1, the predetermined height of the third blocking portion 6 protruding from the top surface of the base 1 is substantially equal to the wet film thickness before the film to be prepared is dried during the preparation process. The distance between the edge of the doctor blade 5 and the upper surface of the base 1 is set to L, that is, the thickness of the wet film before the film to be prepared is dried is set to L, and the preset height of the top surface of the third blocking portion 6 higher than the upper surface of the base 1 is set to H, where L and H are substantially equal.

Specifically, as shown in fig. 4, the third blocking portion 6 is welded to the base 1, or the third blocking portion 6 and the base 1 are integrally formed, the top of the third blocking portion 6 is higher than the top surface of the base 1, and the height of the third blocking portion 6 higher than the upper surface of the base 1 is H, so as to prepare a film with a wet film thickness L before drying.

As an embodiment, L is slightly larger than H, that is, a small gap is formed between the edge portion of the scraper 5 and the top surface of the third blocking portion 6, when the scraper 5 moves to a position above the third blocking portion 6, the scraper 5 can smoothly scrape the top surface of the third blocking portion 6, and after the surplus liquid raw material is pushed out from one side of the third blocking portion 6, the liquid raw material left in the working groove volatilizes the solvent and is dried, so that a thin film with relatively uniform thickness can be obtained; as another embodiment, L is slightly smaller than H or L is equal to H, the doctor blade 5 cannot scrape from the top surface of the third blocking portion 6, and in order to avoid friction generated when the doctor blade 5 scrapes from the top surface of the third blocking portion 6, a limiting structure, such as a protrusion structure or any other type of structure, may be disposed on the first blocking portion 2 at a position corresponding to the inner side surface of the third blocking portion 6, so as to limit the continued movement of the doctor blade 5 to the position where the third blocking portion 6 is located.

On the basis of any one of the above embodiments, the top of the tool holder 4 is provided with a second regulator 8, and the second regulator 8 is movably connected with the scraper 5 for regulating the size of the gap.

Specifically, as shown in fig. 1 to 3, the blade holder 4 is provided with a support member, a structure capable of sliding in cooperation with the first blocking portion 2 is provided at the bottom of the support member, a cross bar for supporting the blade 5 is provided at the top of the support member, a through hole is provided above the cross bar in the vertical direction, a threaded hole capable of being aligned with the through hole of the blade holder 4 is provided at the top of the blade 5 in the vertical direction, the second regulator 8 is provided in the through hole of the blade holder 4 and the threaded hole of the blade 5, and the working groove may be a groove with a wide upper portion and a narrow lower portion, preferably the working groove is a rectangular groove, that is, the opposite side surface of the first blocking portion 2 is a vertical surface, so that screwing the second regulator 8 may move the blade 5 and fix it at a preset height, thereby adjusting the size of the gap between the blade portion of the blade 5 and the top surface of the base 1. The number of second regulators 8 is not limited as long as the above-described functions can be realized.

So set up, the position of scraper 5 can be adjusted, and the size in space can be adjusted promptly, then need not to change scraper 5 or knife rest 4, through the film of the preparation arbitrary thickness that this coating unit of regulation and control scraper 5 can adapt to, very big improvement practicality and the commonality of this coating unit, and easy operation effectively reduces operator's intensity of labour.

On the basis of the above embodiment, the opposite two side surfaces of the first blocking portion 2 are vertical surfaces, the two first blocking portions 2 are provided with the second guiding structures 2-1, the two opposite side surfaces of the tool rest 4 are coplanar with the corresponding side surfaces of the first blocking portions 2, and the two guiding portions 4-1 of the tool rest 4 can be matched with the corresponding second guiding structures 2-1.

Specifically, as shown in fig. 7 and 8, the two first blocking portions 2 are provided with second guiding structures 2-1, and the two guiding portions 4-1 at the bottom of the tool rest 4 are respectively matched with the second guiding structures 2-1 of the two first blocking portions 2, for example, the second guiding structures 2-1 are T-shaped sliding grooves, the guiding portions 4-1 are T-shaped protruding structures capable of being matched with the second guiding structures 2-1, and of course, the two first blocking portions can be any other type of second guiding structures 2-1 and guiding portions 4-1, so long as sliding can be realized through matching, the two first blocking portions are arranged so as to be beneficial to stable sliding of the tool rest 4, and quality of the prepared film is ensured to be excellent; the two opposite side surfaces of the two first blocking parts 2 and the top surface of the base 1 form the working groove, the two side surfaces of the first blocking parts 2 are vertical surfaces, the formed working groove is a rectangular groove, the two opposite side edges of the tool rest 4 are coplanar with the two side edges of the working groove, the scraper 5 can slide along the working groove and the tool rest 4 smoothly longitudinally, the two side edges of the prepared film can be ensured to be thin and thick uniformly all the time after the height of the scraper 5 is adjusted, and the prepared film is excellent in quality and regular in shape.

On the basis of the embodiment, the opposite two sides of the tool rest 4 are respectively provided with a third guide structure 4-2, and the two sides of the scraper 5 are respectively provided with a second connecting part 5-1 matched with the third guide structures 4-2.

Specifically, as shown in fig. 8 and 9, the third guiding structures 4-2 are respectively arranged on two opposite sides of the tool rest 4 along the vertical direction, and two sides of the scraper 5 are respectively arranged on the second connecting parts 5-1 adapted to the third guiding structures 4-2, so that when the second regulator 8 is regulated, the third guiding structures 4-2 are matched with the second connecting parts 5-1 to guide the scraper 5 to move along the vertical direction, so that the scraper 5 is convenient to regulate, and in the process of using the scraper 5 to level liquid raw materials, the condition that the scraper 5 shakes is avoided under the limitation of the third guiding structures 4-2, and the quality of the prepared film is effectively improved.

It should be noted that the two third guide structures 4-2 are not limited to be identical, and the two second connection portions 5-1 are not limited to be located at the same height of the doctor blade 5, so long as the above-described functions can be achieved.

In some embodiments, the second guiding structure 2-1 is a drop-off prevention groove, and the first blocking portion 2 is a wear member. Specifically, the first blocking portion 2 made of wear-resistant materials is provided with the anti-falling groove on the first blocking portion 2 along the length direction thereof as the second guiding structure 2-1, such as a dovetail groove, a T-shaped groove and the like, which is beneficial to smooth sliding of the tool rest 4 along the length direction of the first blocking portion 2 and effectively prolongs the service life thereof.

Further, the first blocking part 2 and polytetrafluoroethylene are made of self-lubricating materials, so that the smoothness of the operation of the tool rest 4 is improved, stagnation in the pushing process of the scraper 5 is avoided, and the surface quality of the prepared film is effectively ensured.

The types of the first guide structure 1-1, the second guide structure 2-1, and the third guide structure 4-2 may be the same or different. Preferably, the first guide structure 1-1, the second guide structure 2-1, and the third guide structure 4-2 are all anti-derailing grooves, such as T-shaped grooves or dovetail grooves, and the structure is simple, and the situation that the third blocking portion 6, the knife rest 4, and the scraper 5 respectively matched with the first guide structure 1-1, the second guide structure 2-1, and the third guide structure 4-2 are derailed is effectively avoided, specifically, when the third blocking portion 6, the knife rest 4, and the scraper 5 are subjected to the force that makes the third blocking portion, the knife rest 4, and the scraper 5 have the derailing tendency, the force applied by the groove walls of the anti-derailing grooves is counteracted, which is beneficial to the stable operation of the coating device, and the possibility of faults is reduced.

On the basis of any one of the embodiments, the device further comprises a driving assembly, wherein the driving assembly comprises a lead screw 9, a power piece 10 and a transmission piece 11; the transmission piece 11 is contacted with the tool rest 4 to push the tool rest 4 to move, and the transmission piece 11 is provided with a thread structure; the screw rod 9 is arranged at the bottom of the base 1, and the screw rod 9 can be matched with the thread structure; one end of the screw rod 9 is fixedly connected with the power piece 10 and is used for driving the screw rod 9 to rotate.

Specifically, as shown in fig. 3, the screw rod 9 is disposed at the bottom or side of the base 1, and the length direction of the screw rod 9 is parallel to the length direction of the linear first blocking portion 2; a thread structure, such as a threaded through hole or a threaded through groove, is arranged at a corresponding position of the transmission member 11, and the screw rod 9 passes through the thread structure; one end of the lead screw 9 is fixedly connected with a rotating output shaft of the power piece 10, a coupler or welding is adopted, when the power piece 10 is started, the lead screw 9 is rotated forward or backward, and the transmission piece 11 can be pushed to reciprocate along the length direction of the first blocking part 2; the driving medium 11 can promote the knife rest 4 to remove, alternatively, driving medium 11 and knife rest 4 fixed connection, or, driving medium 11 is located one side of knife rest 4, and driving medium 11 moves to be in contact with it with knife rest 4 place, then the scraper 5 that sets up on knife rest 4 can follow knife rest 4 synchronous movement, and this setting is favorable to reducing operator's intensity of labour, and very big improvement this coating unit's degree of automation, and knife rest 4 operates steadily, effectively guarantees the quality of the film that makes.

On the basis of any one of the above embodiments, the blade portion of the doctor blade 5 has a structure with a narrow bottom and a wide top. Specifically, as shown in fig. 9, one side of the blade portion of the scraper 5, which is close to the second blocking portion 3, is closer to the top surface of the base 1 than the side, which is far away from the second blocking portion 3, and the cross-sectional shape of the blade portion may be triangular or trapezoidal, so that when the scraper 5 pushes the liquid raw material, a pushing force is applied to the inclined surface of the blade portion in advance to push the redundant liquid raw material, the tip of the blade portion scrapes the remaining liquid raw material behind, and adhesion is not easy to occur in the thinner blade portion, which is beneficial to improving the surface quality of the prepared film.

The terms "upper surface, lower surface, top, bottom" and the terms "upper, lower, left and right" are defined based on the drawings of the specification.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The coating apparatus for preparing a uniform thin film according to the present utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. A coating apparatus for preparing a uniform film, comprising:

a base (1);

the two first blocking parts (2) are oppositely arranged on the base (1), the opposite side surfaces of the two first blocking parts (2) are provided with blocking surfaces, and the blocking surfaces and the top surface of the base (1) form a working groove;

the second blocking parts (3) are arranged on the base (1), and the second blocking parts (3) are in seamless connection with the two first blocking parts (2) to form a U-shaped structure;

a tool rest (4) provided on the first blocking portion (2), the tool rest (4) being slidable in the longitudinal direction of the first blocking portion (2);

the scraper (5) is arranged on the tool rest (4), the edge part of the scraper (5) faces the base (1), and a gap is formed between the edge part of the scraper (5) and the top surface of the base (1).

2. Coating apparatus for preparing a uniform film according to claim 1, characterized in that said base (1) is provided with a third blocking portion (6), said third blocking portion (6) being arranged opposite to said second blocking portion (3), and said third blocking portion (6) being conformed to both said first blocking portions (2), said third blocking portion (6) being able to block the flow of liquid.

3. Coating apparatus for preparing a uniform film according to claim 2, characterized in that one end of the base (1) or the first barrier (2) provided with the third barrier (6) is provided with a first guiding structure (1-1), the third barrier (6) being slidably arranged in the first guiding structure (1-1);

the first blocking part (2) is provided with a first regulator (7), and the first regulator (7) is movably connected with the third blocking part (6) and is used for regulating and fixing the third blocking part (6).

4. A coating apparatus for preparing a uniform thin film according to claim 3, characterized in that the number of said first regulators (7) is two, two of said first regulators (7) being arranged on top of the corresponding first barrier (2);

and/or the first guiding structure (1-1) is a T-shaped chute, the number of the T-shaped chutes is two, the two T-shaped chutes are positioned at the bottom of the corresponding first blocking part (2), the third blocking part (6) is provided with two T-shaped sliding blocks (6-1), and each T-shaped sliding block (6-1) is matched with the corresponding T-shaped chute.

5. Coating apparatus for producing a uniform film according to claim 2, characterized in that, during the production process, the third barrier (6) protrudes above the top surface of the base (1) by a predetermined height substantially equal to the wet film thickness before the film to be produced is dried.

6. Coating apparatus for the preparation of uniform films according to any of the claims from 1 to 5, characterized in that the top of the blade holder (4) is provided with a second regulator (8), said second regulator (8) being movably connected to the doctor blade (5) for regulating the size of the interspace.

7. Coating apparatus for preparing a uniform film according to claim 6, characterized in that the opposite sides of said first blocking portions (2) are vertical surfaces, both said first blocking portions (2) being provided with second guiding structures (2-1), the opposite sides of said blade holder (4) being coplanar with the corresponding sides of said first blocking portions (2), the two guiding portions (4-1) of said blade holder (4) being cooperable with the corresponding said second guiding structures (2-1).

8. Coating apparatus for preparing a uniform film according to claim 7, characterized in that the opposite sides of the blade holder (4) are provided with third guiding structures (4-2), and the sides of the doctor blade (5) are provided with second connecting portions (5-1) matching the third guiding structures (4-2).

9. Coating apparatus for preparing a uniform film according to any of the claims 1 to 5, characterized in that it further comprises a driving assembly comprising a screw (9), a power member (10) and a transmission member (11);

the transmission piece (11) is contacted or connected with the tool rest (4) to push the tool rest (4) to move, and the transmission piece (11) is provided with a thread structure;

the screw rod (9) is arranged at the bottom of the base (1), and the screw rod (9) can be matched with the thread structure; one end of the screw rod (9) is connected with the power piece (10) and used for driving the screw rod (9) to rotate.

10. Coating apparatus for producing a uniform film according to any of claims 1 to 5, characterized in that the blade part of the doctor blade (5) is of a narrow-bottom, wide-top construction.