阅读说明：本技术 一种薄膜双面立式涂布机构 (Two-sided vertical coating mechanism of film ) 是由 辛刚 丁杰 郑志伟 马德起 于 2021-08-20 设计创作，主要内容包括：本发明属于薄膜表面涂布生产技术领域,公开了一种薄膜双面立式涂布机构,包括：薄膜；涂布组件,所述涂布组件包括对称分布于所述薄膜两侧的涂布辊,且所述涂布辊表面的可使用区域宽度沿轴向可调；所述涂布辊包括：固定支撑辊,且所述固定支撑辊内贯穿固定有涂布转轴；对称设置于所述固定支撑辊两端的移动支撑辊和限位端辊,所述移动支撑辊和限位端辊均与涂布转轴滑动配合,且移动支撑辊位于限位端辊与固定支撑辊之间；所述移动支撑辊的外径与固定支撑辊的外径相同,所述限位端辊的外径小于移动支撑辊的外径；连接于两个限位端辊之间的弹性套,所述弹性套套设于固定支撑辊和移动支撑辊外部,且所述弹性套可沿径向弹性伸缩变形。(The invention belongs to the technical field of film surface coating production, and discloses a film double-sided vertical coating mechanism, which comprises: a film; the coating assembly comprises coating rollers symmetrically distributed on two sides of the film, and the width of a usable area on the surface of each coating roller is adjustable along the axial direction; the coating roller includes: the coating device comprises a fixed supporting roller, a coating rotating shaft and a coating roller, wherein the coating rotating shaft penetrates through and is fixed in the fixed supporting roller; the movable supporting roll and the limiting end roll are symmetrically arranged at two ends of the fixed supporting roll, the movable supporting roll and the limiting end roll are in sliding fit with the coating rotating shaft, and the movable supporting roll is positioned between the limiting end roll and the fixed supporting roll; the outer diameter of the movable supporting roller is the same as that of the fixed supporting roller, and the outer diameter of the limiting end roller is smaller than that of the movable supporting roller; the elastic sleeve is connected between the two limiting end rollers, the elastic sleeve is sleeved outside the fixed supporting roller and the movable supporting roller, and the elastic sleeve can elastically stretch and deform along the radial direction.)

1. A vertical coating mechanism of film two-sided which characterized in that includes:

a film (1);

the coating assembly comprises coating rollers (2) symmetrically distributed on two sides of the film (1), and the width of a usable area on the surface of each coating roller (2) is adjustable along the axial direction;

the coating roll (2) comprises:

a fixed support roller (21), and a coating rotating shaft (22) penetrates and is fixed in the fixed support roller (21);

the movable supporting roll (23) and the limiting end roll (24) are symmetrically arranged at two ends of the fixed supporting roll (21), the movable supporting roll (23) and the limiting end roll (24) are in sliding fit with the coating rotating shaft (22), and the movable supporting roll (23) is positioned between the limiting end roll (24) and the fixed supporting roll (21); the outer diameter of the movable supporting roller (23) is the same as that of the fixed supporting roller (21), and the outer diameter of the limiting end roller (24) is smaller than that of the movable supporting roller (23);

the elastic sleeve (25) is connected between the two limiting end rollers (24), the elastic sleeve (25) is sleeved outside the fixed supporting roller (21) and the movable supporting roller (23), and the elastic sleeve (25) can elastically stretch and deform along the radial direction.

2. The vertical coating mechanism of claim 1, wherein: and a moving driving device (26) is fixedly arranged on the fixed support roller (21), and the moving driving device (26) is used for driving the moving support roller (23) to axially reciprocate along the coating rotating shaft (22).

3. The vertical coating mechanism of claim 2, wherein: the circumferential edges of the movable supporting roller (23) and the limiting end roller (24) are arc-shaped structures, and a limiting spring (27) is connected between the movable supporting roller (23) and the limiting end roller (24).

4. A vertical coating mechanism for double-sided film as claimed in claim 1, further comprising auxiliary rollers (3) symmetrically disposed on both sides of the film (1), wherein the auxiliary rollers (3) are configured to:

effecting indirect application of the film (1) to the application roller (2), or

And the two movable supporting rollers (23) are symmetrically supported at the outer sides.

5. The vertical coating mechanism of claim 4, wherein: when indirect coating of the film (1) with the coating roll (2) is effected by means of the auxiliary roll (3):

the coating roller (2) is not in contact with the film (1), two sides of the auxiliary roller (3) are respectively in contact with the coating roller (2) and the film (1), and the axial length of the auxiliary roller (3) is larger than the width of the film (1).

6. The vertical coating mechanism of claim 5, wherein: the center height of the auxiliary roller (3) is not lower than that of the coating roller (2).

7. A vertical film coating mechanism as claimed in claim 4, wherein when said auxiliary roller (3) is symmetrically supported at the outer sides of two said movable supporting rollers (23), it further comprises:

the device comprises two support rings (31) which are symmetrically fixed, wherein the distance between the two support rings (31) is greater than the sum of the width of a film (1) and the length of two auxiliary rollers (3), the inner diameter of each support ring (31) is greater than the outer diameter of a limiting end roller (24), and the two support rings (31) are respectively positioned on the outer sides of two movable support rollers (23) and sleeved outside an elastic sleeve (25);

set up in carriage release lever (32) on support ring (31), just assist roller (3) rotate to be connected in carriage release lever (32) towards the one end that removes backup roll (23), one side surface of coating roller (2) and one side surface parallel and level of assist roller (3), and coating roller (2) and assist roller (3) all contact with film (1) through one side surface of this parallel and level.

8. The vertical coating mechanism of claim 7, wherein:

a mounting sleeve (33) is fixed at one end of the moving rod (32) facing the moving support roller (23), and the auxiliary roller (3) is rotatably mounted in the mounting sleeve (33);

a positioning spring (34) is connected between the mounting sleeve (33) and the support ring (31), and one end, far away from the positioning spring (34), of the mounting sleeve (33) is of a hemispherical structure.

9. The vertical coating mechanism of claim 1, further comprising:

and the solvent tank (4) is used for storing the coating solvent, is arranged below the coating roller (2) and is used for wetting a usable area on the surface of the coating roller (2) with the coating solvent with a set thickness.

10. The vertical coating mechanism of claim 1, further comprising:

and the drying box (5), the film (1) sequentially penetrates through the coating assembly and the drying box (5), and the drying box (5) is used for uniformly drying two sides of the film (1).

Technical Field

The invention belongs to the technical field of film surface coating production, and particularly relates to a film double-sided vertical coating mechanism.

Background

The coating machine is mainly used for the surface coating production of plane products such as films, paper and the like. At present, a single-side coating mode is mostly adopted in a common coating machine, so when a film needs to be coated on two sides, the coating is generally carried out twice, the coating is carried out for the second time after the coating is finished and dried for one time, the operation is troublesome, and the coating efficiency is low; further, in many of the conventional coaters, the thickness of the surface coating can be adjusted, and it is difficult to accurately adjust the coating width.

Disclosure of Invention

In view of the above, the present invention provides a vertical coating mechanism for coating a film on both sides of a substrate.

In order to achieve the purpose, the invention provides the following technical scheme: a film double-sided vertical coating mechanism comprises:

a film;

the coating assembly comprises coating rollers symmetrically distributed on two sides of the film, and the width of a usable area on the surface of each coating roller is adjustable along the axial direction;

the coating roller includes:

the coating device comprises a fixed supporting roller, a coating rotating shaft and a coating roller, wherein the coating rotating shaft penetrates through and is fixed in the fixed supporting roller;

the movable supporting roll and the limiting end roll are symmetrically arranged at two ends of the fixed supporting roll, the movable supporting roll and the limiting end roll are in sliding fit with the coating rotating shaft, and the movable supporting roll is positioned between the limiting end roll and the fixed supporting roll; the outer diameter of the movable supporting roller is the same as that of the fixed supporting roller, and the outer diameter of the limiting end roller is smaller than that of the movable supporting roller;

the elastic sleeve is connected between the two limiting end rollers, the elastic sleeve is sleeved outside the fixed supporting roller and the movable supporting roller, and the elastic sleeve can elastically stretch and deform along the radial direction.

Preferably, a moving driving device is fixedly mounted on the fixed support roller and used for driving the moving support roller to axially reciprocate along the coating rotating shaft.

Preferably, the circumferential edges of the movable supporting roller and the limiting end roller are both arc-shaped structures, and a limiting spring is connected between the movable supporting roller and the limiting end roller.

Preferably, the film further comprises auxiliary rollers symmetrically distributed on two sides of the film, and the auxiliary rollers are used for:

effecting indirect coating of the film with the coating roll, or

And the two movable supporting rollers are symmetrically supported at the outer sides of the two movable supporting rollers.

Preferably, when indirect coating of the film with the coating roll is achieved using the auxiliary roll:

the coating roll is not contacted with the film, two sides of the auxiliary roll are respectively contacted with the coating roll and the film, and the axial length of the auxiliary roll is greater than the width of the film;

the center height of the auxiliary roller is not lower than that of the coating roller.

Preferably, when the auxiliary roller is symmetrically supported at the outer sides of the two movable supporting rollers, the auxiliary roller further comprises:

the device comprises two symmetrically fixed support rings, wherein the distance between the two support rings is greater than the sum of the width of a film and the length of two auxiliary rollers, the inner diameter of each support ring is greater than the outer diameter of a limiting end roller, and the two support rings are respectively positioned on the outer sides of two movable supporting rollers and sleeved outside an elastic sleeve;

set up in the carriage release lever on the support ring, just the auxiliary roll rotates to be connected in the one end that the carriage release lever moved the backing roll towards, a side surface of coating roll and a side surface parallel and level of auxiliary roll, and coating roll and auxiliary roll all contact with the film through a side surface of this parallel and level.

Preferably, a mounting sleeve is fixed at one end of the movable rod facing the movable supporting roller, and the auxiliary roller is rotatably mounted in the mounting sleeve; and a positioning spring is connected between the mounting sleeve and the support ring, and one end of the mounting sleeve, which is far away from the positioning spring, is of a hemispherical structure.

Preferably, the coating mechanism further comprises a solvent tank, wherein the solvent tank stores a coating solvent and is arranged below the coating roller so as to enable a usable area on the surface of the coating roller to be soaked with the coating solvent with a set thickness.

Preferably, the coating mechanism further comprises a drying box, the film sequentially penetrates through the coating assembly and the drying box, and the drying box is used for uniformly drying two sides of the film.

Compared with the prior art, the invention has the following beneficial effects:

(1) in the invention, the usable coating width of the integral coating roller is limited by two movable supporting rollers which are symmetrically arranged, and the movable supporting rollers can axially reciprocate, so that the usable coating width of the coating roller can be effectively changed, and the coating requirements under different conditions can be flexibly met.

(2) And a fixed support roller is arranged between the two movable support rollers, so that the middle part of the whole coating roller is stably supported, and the stability of a coating structure is ensured.

(3) The outer sides of the two movable supporting rollers are provided with limiting end rollers, and the outer diameters of the limiting end rollers are smaller than the outer diameters of the movable supporting rollers, so that the non-use position of the coating roller is in a conical state, the problem of mistaken coating outside a usable area is effectively avoided, and the coating accuracy is guaranteed.

(4) The auxiliary rollers are correspondingly arranged aiming at the coating roller, and particularly, the auxiliary rollers are matched with the coating roller, so that the edges of two sides of the film can be effectively clamped, the phenomenon of film shaking in the coating process is effectively avoided, stable coating is realized, and the coating quality is ensured.

(5) Aiming at the auxiliary roller, the film is limited by adopting an auxiliary supporting or auxiliary coating mode, and the auxiliary roller is simple and reasonable in structure and convenient to coat.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the coating roller and the auxiliary roller in cooperation with each other according to one embodiment of the present invention;

FIG. 3 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 4 is a schematic view of a first configuration of a second embodiment of the invention when the applicator roll is engaged with an auxiliary roll;

FIG. 5 is a second schematic view of the coating roll and the auxiliary roll in cooperation with each other according to the second embodiment of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 4;

fig. 7 is a perspective view of the coating roller and the auxiliary roller in accordance with the second embodiment of the present invention.

In the figure: film-1; a coating roller-2; a fixed supporting roller-21; coating a rotating shaft-22; moving the supporting roller-23; a limiting end roller-24; an elastic sleeve-25; a movement drive device-26; a limiting spring-27; an auxiliary roller-3; a support ring-31; -32, a mobile rod; a mounting sleeve-33; a positioning spring-34; a solvent tank-4; and (5) a drying box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-2, in an embodiment of the present invention, a film double-sided vertical coating mechanism is provided, and the coating mechanism mainly includes the following structure:

a film 1;

the coating component comprises coating rollers 2 symmetrically distributed on two sides of the film 1, and the width of the usable area on the surface of each coating roller 2 is adjustable along the axial direction;

the auxiliary rollers 3 are symmetrically distributed on two sides of the film 1, and the auxiliary rollers 3 are used for realizing indirect coating of the film 1 and the coating roller 2;

a solvent tank 4, which is provided below the coating roller 2 and stores the coating solvent, and is used for wetting the usable area on the surface of the coating roller 2 with the coating solvent with a set thickness;

and the drying box 5 is used for enabling the film 1 to sequentially pass through the coating assembly and the drying box 5, and the drying box 5 is used for uniformly drying two sides of the film 1.

As can be seen from fig. 2, the coating roll 2 specifically includes the following structure, and the adjustment of the usable area width thereof is achieved by the following structure. The coating roller 2 includes:

a fixed support roller 21, and a coating rotating shaft 22 is fixedly penetrated in the fixed support roller 21;

the movable support roller 23 and the limiting end roller 24 are symmetrically arranged at two ends of the fixed support roller 21, the movable support roller 23 and the limiting end roller 24 are both in sliding fit with the coating rotating shaft 22, and the movable support roller 23 is positioned between the limiting end roller 24 and the fixed support roller 21; the outer diameter of the movable supporting roller 23 is the same as that of the fixed supporting roller 21, and the outer diameter of the limiting end roller 24 is smaller than that of the movable supporting roller 23;

and the elastic sleeve 25 is connected between the two limiting end rollers 24, the elastic sleeve 25 is sleeved outside the fixed supporting roller 21 and the movable supporting roller 23, and the elastic sleeve 25 can elastically stretch and deform along the radial direction.

From the above, the principle of adjusting the width of the usable area of the coating roll 2 is as follows:

when the usable area width of the coating roll 2 is increased, the movable support roll 23 is moved in a direction away from the fixed support roll 21, thereby increasing the length of the central cylindrical portion of the entire coating roll 2, and the coating roll 2 is loaded and coated with the coating solvent through the cylindrical portion, thereby achieving an effect of increasing the usable area width. At the same time as the above movement, the elastic sleeve 25 between the moving support roll 23 and the stopper end roll 24 is radially stretched, thereby keeping the usable area of the coating roll 2 intact. In addition, because of the limitation of the limiting end roller 24 on the two ends of the elastic sleeve 25, the elastic sleeve 25 can be effectively kept tensioned, and the coating solvent can be uniformly attached to the surface of the elastic sleeve 25.

In the present embodiment, further, a moving driving device 26 is fixedly mounted on the fixed support roller 21, and the moving driving device 26 is used for driving the moving support roller 23 to perform axial reciprocating movement along the coating rotating shaft 22. In particular, an electric telescopic rod is preferably used as the movement drive 26, so that the overall coating roller 2 is automatically adjusted.

In this embodiment, further, the circumferential edges of the movable supporting roller 23 and the limit end roller 24 are arc-shaped, and a limit spring 27 is connected between the movable supporting roller 23 and the limit end roller 24. Therefore, the limit between the movable supporting roller 23 and the limit end roller 24 is convenient, and a certain axial moving space is provided for the elastic sleeve 25 through the expansion and contraction of the limit spring 27 while the elastic sleeve 25 is radially expanded, and the tension of the elastic sleeve 25 is not influenced.

In summary, and with reference to fig. 1, when indirect coating of the film 1 and the coating roll 2 is achieved by the auxiliary roll 3:

the coating roller 2 is not contacted with the film 1, two sides of the auxiliary roller 3 are respectively contacted with the coating roller 2 and the film 1, and the axial length of the auxiliary roller 3 is larger than the width of the film 1;

the center height of the auxiliary roller 3 is not lower than that of the coating roller 2.

Specifically, the left and right diagrams in fig. 1 show two limit positions of the auxiliary roller 3, respectively. As in the left figure, the center height of the auxiliary roller 3 is flush with the center height of the application roller 2; as in the right drawing, the auxiliary roller 3 is positioned directly above the applicator roller 2.

Specifically, the coating principle of the present embodiment is as follows: the coating roller 2 rotates around the coating rotating shaft 22, so that the coating solvent in the solvent tank 4 is attached to the usable area of the surface of the coating roller 2 in a set thickness, the coating roller 2 is in contact with the auxiliary roller 3 during rotation, so that the coating solvent is transferred to the surface of the auxiliary roller 3, and the auxiliary roller 3 is in contact with the film 1, so that the coating solvent is coated on the surface of the film 1.

Example two

Referring to fig. 3 to 7, in an embodiment of the present invention, a vertical coating mechanism for two sides of a film is provided, and the coating mechanism mainly includes the following structure:

a film 1;

the coating component comprises coating rollers 2 symmetrically distributed on two sides of the film 1, and the width of the usable area on the surface of each coating roller 2 is adjustable along the axial direction;

the auxiliary rollers 3 are symmetrically distributed on two sides of the film 1, and the auxiliary rollers 3 on each side comprise two and are symmetrically supported on the outer sides of the two movable supporting rollers 23;

a solvent tank 4, which is provided below the coating roller 2 and stores the coating solvent, and is used for wetting the usable area on the surface of the coating roller 2 with the coating solvent with a set thickness;

and the drying box 5 is used for enabling the film 1 to sequentially pass through the coating assembly and the drying box 5, and the drying box 5 is used for uniformly drying two sides of the film 1.

As can be seen from fig. 3, the same structure and principle as those of the first embodiment are adopted for the coating roll 2; the auxiliary roller 3 also includes the following structure:

the two support rings 31 are symmetrically fixed, the distance between the two support rings 31 is greater than the sum of the width of the film 1 and the length of the two auxiliary rollers 3, the inner diameter of each support ring 31 is greater than the outer diameter of the limiting end roller 24, and the two support rings 31 are respectively positioned on the outer sides of the two movable support rollers 23 and sleeved outside the elastic sleeve 25; preferably, two support rings 31 are fixed on top of the solvent tank 4 to achieve a rational assembly of the structure;

a moving rod 32 provided on the support ring 31, and the auxiliary roller 3 is rotatably connected to an end of the moving rod 32 facing the moving support roller 23, one side surface of the coating roller 2 is flush with one side surface of the auxiliary roller 3, and both the coating roller 2 and the auxiliary roller 3 are in contact with the film 1 through the flush one side surface;

a mounting sleeve 33 is fixed at one end of the moving rod 32 facing the moving support roller 23, and the auxiliary roller 3 is rotatably mounted in the mounting sleeve 33; a positioning spring 34 is connected between the mounting sleeve 33 and the supporting ring 31, and one end of the mounting sleeve 33 far away from the positioning spring 34 is of a hemispherical structure.

Specifically, the coating principle of the present embodiment is as follows:

when the width of the usable area of the coating roller 2 is smaller than the width of the film 1, as can be seen from fig. 4 and 6, the movable support roller 23 approaches the fixed support roller 21, so that the distance between the movable support roller 23 and the support ring 31 is increased, in this state, the mounting sleeve 33 and the auxiliary roller 3 approach the movable support roller 23 due to the limitation of the positioning spring 34, so that the auxiliary roller 3 is supported at the edges of the two sides of the film 1, thereby ensuring the stability of the film 1 as a whole during coating.

When the width of the usable area of the coating roller 2 is not less than the width of the film 1, as can be seen from fig. 5, the usable area of the coating roller 2 forms a complete support for the entire film 1, so as to ensure the stable coating of the film 1, and the mounting sleeve 33 and the auxiliary roller 3 move away from the fixed support roller 21 under the limitation of the movable support roller 23, and compress the positioning spring 34.

In addition, the coating mechanisms disclosed in the first and second embodiments of the present invention should further include an unwinding roller, a winding roller, and other structures not shown in the drawings, and these structures not shown are all the prior art, and will not be described in detail in the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.