CN108620272B

CN108620272B - Coating machine

Info

Publication number: CN108620272B
Application number: CN201710173144.0A
Authority: CN
Inventors: 曹英杰; 张国臻; 刘鹏飞
Original assignee: Zhangjiagang Kangdexin Optronics Material Co Ltd
Current assignee: Zhangjiagang Kangdexin Optronics Material Co Ltd
Priority date: 2017-03-22
Filing date: 2017-03-22
Publication date: 2021-11-16
Anticipated expiration: 2037-03-22
Also published as: CN108620272A

Abstract

The invention provides a coating machine which comprises a coating device, wherein the coating device comprises a rack, a soft back roll and a coating roll. Wherein, the soft back roll can be rotationally arranged on the frame, and the coating roll and the soft back roll are arranged in parallel and can rotate. During the use, place the base film between soft dorsal bar and coating roll, because soft dorsal bar has certain elasticity, can ensure that soft dorsal bar drives the base film motion in-process coating roll and base film in close contact with to the realization is to the even coating of base film. Even if the coating machine is used for large-area coating, the coating uniformity can be ensured by only selecting the soft back roll and the coating roll with proper lengths according to the width of the base film.

Description

Coating machine

Technical Field

The invention relates to the technical field of coating, in particular to a coating machine.

Background

The coating machine is mainly used for the surface coating process production of base films, paper and the like. The machine is used for coating a layer of glue, paint or printing ink with specific functions on a coiled substrate, drying and rolling. The multifunctional coating head is specially used, and can realize the generation of surface coating in various forms. The winding and unwinding of the coating machine are all provided with full-speed automatic film receiving mechanisms, and the PLC program tension is automatically controlled in a closed loop mode.

The existing single coating machine is usually a small laboratory coater, the coating width is generally less than 500mm, and the coating length is also less than 1000 mm.

Therefore, the coating machine cannot produce a wide and long coating sample, can only produce a small amount, and cannot meet the requirement of large-scale and large-area coating. In order to coat a large area, if the original small-sized coating machine is modified, the difficulty of machining is increased, the precision of the machine is not easy to ensure, and the quality of products cannot be ensured.

Disclosure of Invention

The invention mainly aims to provide a coating machine to solve the problem that coating uniformity is difficult to ensure in large-area coating operation in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a coating machine including a coating roller for coating a coating liquid onto a base film to be coated, and a rotatable soft back roller disposed adjacent to the coating roller and elastically nipping the base film in abutment with the coating roller.

Further, a gap is arranged between the coating roller and the soft back roller, and a liquid storage space for storing the coating liquid is formed.

Furthermore, the center line of the coating roll and the center line of the soft back roll are located in the same first plane, the first plane and the vertical plane form an included angle, and the included angle formed by the first plane and the vertical plane is larger than 0 degree and smaller than 90 degrees.

Further, the coating machine also comprises a machine frame, and the coating roller and the soft back roller are erected on the machine frame.

Further, the frame is provided with the platform adjacent for place the base film after the masking liquid.

Further, a clamping device is arranged on the platform and used for clamping and extending the base film coated with the liquid on the platform.

Furthermore, a bracket is arranged on the frame, and the coating roller is fixedly arranged on the bracket.

Furthermore, the coating machine also comprises an adjusting mechanism, one end of the adjusting mechanism is an operating end, the other end of the adjusting mechanism is in threaded connection with the rack and is fixedly connected with the support, and the adjusting mechanism is used for adjusting the position of the support relative to the rack so as to adjust the gap between the coating roll and the soft back roll.

Further, the coating machine also comprises a positioning mechanism, and the positioning mechanism is used for fixing the position of the support relative to the machine frame.

Further, the coating machine further comprises a coating liquid supply device which is arranged adjacent to the coating roller and used for supplementing the coating liquid into the liquid storage space.

Further, clamping device includes slide rail base and slip centre gripping subassembly, and the slide rail base sets up along the direction that the base film extends, and slip centre gripping subassembly slidable ground sets up on slide rail base, and the slip centre gripping subassembly is used for the base film after the centre gripping coating liquid to lay the base film after the coating liquid on the platform along the direction that the base film extends.

Further, the slide rail base includes the base support and props up the slide rail of establishing on the base support, and slip centre gripping subassembly is installed on the slide rail.

Further, the coating machine also comprises a curing device which is arranged above the platform and used for curing the base film paved on the platform after the coating liquid.

When the technical scheme of the invention is applied, the base film is placed between the soft back roll and the coating roll, and the soft back roll has certain elasticity, so that the coating roll can be ensured to be in close contact with the base film in the process of driving the base film to move by the soft back roll, and the base film can be uniformly coated. Even if the coating machine is used for large-area coating, the coating uniformity can be ensured by only selecting the soft back roll and the coating roll with proper lengths according to the width of the base film.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic configuration of an embodiment of a coater according to the present invention.

Wherein the figures include the following reference numerals:

10. a coating device; 11. a frame; 12. a soft back roll; 13. a coating roll; 14. a support; 15. an adjustment mechanism; 16. a positioning mechanism; 20. a platform; 30. a clamping device; 31. a slide rail base; 32. a sliding clamping assembly; 40. and (5) a curing device.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions of the present invention better understood, 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.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Fig. 1 shows an embodiment of the coating machine of the present invention, which includes a coating device 10, and the coating device 10 includes a coating roller 13 and a rotatable soft back roller. Wherein the coating roller 13 is used for coating the coating liquid on the base film to be coated, and the rotatable soft back roller 12 is arranged adjacent to the coating roller 13 and is abutted against the coating roller 13 to elastically clamp the base film. When the device is used, the base film is placed between the soft back roll 12 and the coating roll 13, and the soft back roll 12 has certain elasticity, so that the coating roll 13 is ensured to be in close contact with the base film in the process that the soft back roll 12 drives the base film to move, and the base film is uniformly coated. Even if the coating device is used for large-area coating, the soft back roll 12 and the coating roll 13 with proper lengths only need to be selected according to the width of the base film, and the coating uniformity can be ensured.

Alternatively, the soft back roller 12 is driven to rotate by a motor, the soft back roller 12 is preferably made of a soft material such as rubber, silicone or the like to secure its elasticity, and the coating roller 13 is a cylindrical wire rod. Alternatively, the coating roller 13 may be made of a soft material, or an elastic material may be sleeved on the surface of the coating roller 13 to further ensure the uniformity of coating.

As shown in fig. 1, in the present embodiment, the coating roll 13 and the soft back roll 12 have a nip therebetween for forming a liquid storage space for storing the coating liquid. The liquid storage space can be used for storing coating liquid to realize continuous coating of the base film in the coating process, and the coating uniformity is further ensured. Optionally, when the included angle θ is not zero, that is, when the coating roller 13 is not at the highest point of the soft back roller 12, a liquid storage space formed by a nip between the coating roller 13 and the soft back roller 12 may store the coating liquid for the coating roller 13 to continuously coat the base film. Optionally, the coating liquid in the liquid storage space can be quantitatively controlled to ensure that the height of the coating liquid does not exceed the vertical height from the highest point of the lower roller to the contact position of the two rollers. Alternatively, in order to prevent the coating liquid from overflowing from the edge of the soft back roller 12, circular shielding plates may be provided on both side end surfaces of the soft back roller 12, respectively, and the diameter of the shielding plates is larger than that of the soft back roller 12.

Optionally, the center line of the coating roll 13 and the center line of the soft back roll 12 are in the same first plane α, the first plane α and the vertical plane β form an included angle θ, and the included angle θ formed by the first plane and the vertical plane is greater than 0 ° and less than 90 °. The included angle theta is within the angle range, so that the liquid storage space formed between the soft back roll 12 and the coating roll 13 is not easy to overflow the coating liquid, and the coating liquid is coated on the base film.

Optionally, the coating machine further comprises a frame 11, and the coating roll 13 and the soft back roll 12 are erected on the frame 11.

In the present embodiment, as shown in fig. 1, the coater further includes a stage 20 and a holding device 30. Wherein, platform 20 and coating unit 10 left and right sides adjacent setting are used for placing the basement membrane after the coating liquid. The holding device 30 is adjacent to the stage 20 for laying the liquid-applied base film on the stage 20. During coating, one end of the base film passes through a gap between the coating roller 13 and the soft back roller 12 and is clamped by the clamping device 30, and the coated base film is laid on the platform 20 through the clamping device 30 for subsequent processing.

As shown in fig. 1, in the present embodiment, the coating apparatus 10 further includes a holder 14, the holder 14 is provided on the frame 11, and the coating roller 13 is fixedly mounted on the holder 14. By fixing the coating roller 13, the soft back roller 12 rotates to drive the base film to move, so that the coating roller 13 is ensured to be in good contact with the base film, and the coating uniformity is further ensured.

In the present embodiment, as shown in fig. 1, the coating device 10 further includes an adjusting mechanism 15, one end of the adjusting mechanism 15 is an operating end, the other end of the adjusting mechanism 15 is screwed with the frame 11 and is fixedly connected with the bracket 14, and the position of the bracket 14 relative to the frame 11 is adjusted by screwing the adjusting mechanism 15, so as to adjust the gap between the coating roller 13 and the soft backing roller 12. When coating, the adjusting mechanism 15 is adjusted to enlarge the gap between the coating roller 13 and the soft back roller 12, so as to facilitate the placement of the base film. After the base film passes through the gap between the coating roller 13 and the soft back roller 12, the non-coated surface of the base film is in contact with the soft back roller 12, the coated surface faces the coating roller 13, and one end of the base film passing through the gap is clamped by the sliding clamping component 32. The adjusting mechanism 15 is adjusted according to the base film and the thickness to be coated, so that the size of the gap between the coating roller 13 and the base film meets the coating requirement. And then the capacity of the coating liquid in the liquid storage space is determined according to the coating thickness and the rotating speed of the soft back roll 12, so that the coating liquid in the liquid storage space is not too little to influence the coating continuity, and the coating liquid does not overflow from two sides of the base film due to too much coating liquid. The soft back roll 12 rotates towards the platform, drives the base film motion, begins the coating process, and simultaneously, the base film is held to slip centre gripping subassembly 32 to drive the base film and move toward platform 20, thereby begin the stoving process with the good base film of coating shop on platform 20. If the two sides of the base film need to be coated, the other side of the base film can be coated according to the same flow after one side of the base film is coated and dried. Optionally, the adjusting mechanism 15 may be an adjusting screw, the adjusting screw is disposed on one side of the rack far from the curing device 40, a threaded hole is formed in a side edge of the rack 11, the adjusting screw penetrates through a corresponding threaded hole in the rack 11 and is fixedly connected with the support 14, and the support 14 is controlled to move left and right by screwing the adjusting screw, so as to adjust a gap between the coating roller 13 and the soft back roller 12. Since the base film passes through the gap, the size of the gap is adjusted according to the thickness of the base film and the thickness to be coated.

Optionally, the coating apparatus 10 further comprises a positioning mechanism 16, the positioning mechanism 16 being used to fix the position of the support 14 relative to the frame 11. Optionally, the positioning mechanism 16 is a fastening screw, specifically, the fastening screw is arranged to adjust a gap between the coating roller 13 and the soft backing roller 12 according to the base film and the thickness to be coated, the adjusting method is to screw the adjusting mechanism 15, and after the gap is adjusted, the positioning mechanism 16 is used to fix the relative position of the support 14 and the frame 11.

Optionally, the coating machine further comprises a coating liquid supply device, which is disposed adjacent to the coating roller 13 and is used for replenishing the coating liquid into the liquid storage space. Alternatively, the coating liquid supply device may move back and forth along the length direction of the coating roller 13 so as to uniformly replenish the coating liquid in the reservoir space.

Optionally, the clamping device 30 includes a slide rail base 31 and a slide clamping assembly 32, wherein the slide rail base 31 is disposed along the length of the platform 20. The sliding clamping assembly 32 is slidably disposed on the sliding rail base 31, and is configured to clamp the liquid-applied base film and lay the liquid-applied base film on the platform 20 along the length direction of the platform 20. During coating, one end of the base film passes through a crack between the coating roller 13 and the soft back roller 12 and is clamped by the sliding clamping component 32, the sliding clamping component 32 moves on the slide rail base 31 along the length direction of the platform 20, and the coated base film moves towards one side of the platform 20 far away from the coating device 10 under the driving of the sliding clamping component and is further laid on the platform 20.

Optionally, an arc-shaped transition structure may be disposed on a side of the platform 20 close to the coating device 10 to ensure that the coated base film can smoothly move onto the platform 20 without being scratched. The top of the platform 20 should be smooth enough to minimize the friction experienced by the base film as it moves over the platform. Optionally, the sliding clamping assembly 32 is in driving connection with a motor, and the sliding clamping assembly 32 is driven by the motor to move along the sliding rail base 31.

As shown in fig. 1, in the present embodiment, the slide rail base 31 includes a base bracket and a slide rail supported on the base bracket, and the slide clamping assembly 32 is installed on the slide rail. The slide clamping assembly 32 moves on the slide rails, so that the coated base film can be smoothly moved and laid on the platform 20. The sliding clamping assembly 32 comprises a sliding part and a clamping part installed on the sliding part, in the coating process, the clamping part clamps one end, close to the platform 20, of the base film, the sliding part drives the base film to move towards the platform 20 when moving relative to the sliding rail, therefore, the coated base film is laid on the platform 20 and dried, the whole process realizes the flow process of drying while coating, and the coating efficiency is improved. Optionally, a lubricant may be added to the contact portion of the slide rail and the slide clamp assembly 32 to reduce the sliding friction force applied to the slide clamp assembly 32, and further ensure that the base film can be smoothly moved and laid on the platform 20. Optionally, a roller may be disposed at a portion where the sliding clamping assembly 32 contacts the slide rail, so as to convert sliding friction into rolling friction, further reduce friction force applied when the sliding clamping assembly 32 moves on the slide rail, protect the device, and ensure that the coated base film is smoothly transported to the platform 20.

Optionally, as shown in fig. 1, the coating machine further includes a curing device 40, and the curing device 40 is disposed above the platform 20 and is used for curing the liquid-applied base film laid on the platform 20. Optionally, the curing device 40 includes an oven, a heating lamp is disposed in the oven, and the lamp is powered on to generate heat, so that the temperature above the platform 20 is raised, and the base film can be cured. Optionally, the coating machine of the present invention may further include a winding device, which may wind the dried base film, thereby realizing coating integration.

The coating machine of the present invention may be used for coating other substrates in addition to the base film in the present embodiment.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

during the use, place the base film between soft dorsal bar and coating roll, because soft dorsal bar has certain elasticity, can ensure that soft dorsal bar drives the base film motion in-process coating roll and base film in close contact with to the realization is to the even coating of base film. Even if the coating machine is used for large-area coating, the coating uniformity can be ensured by only selecting the soft back roll and the coating roll with proper lengths according to the width of the base film. In addition, utilize motor traction linear guide subassembly to drive the base film and lay toward the platform, can come the speed and the tension of accurate control coating process through the rotational speed of adjusting the motor, guarantee the roughness of base film in the coating process.

Therefore, the coating machine of the invention can realize the manufacture of wide and long coating samples and can carry out mass production, thereby meeting the requirement of mass large-area coating. The coating precision of a machine can be ensured while the requirement is ensured, and the coating effect of the base film is ensured.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coater, comprising:

a coating roller (13) for coating the coating liquid onto the base film to be coated;

a rotatable soft back roll (12) which is arranged adjacent to the coating roll (13) and elastically clamps the base film by abutting against the coating roll (13);

a frame (11), wherein the coating roller (13) and the soft back roller (12) are arranged on the frame (11);

the machine frame (11) is adjacently provided with a platform (20) for placing the base film after the coating liquid;

the platform (20) is provided with a clamping device (30) for clamping and extending the base film coated with the liquid on the platform (20);

a bracket (14) is arranged on the frame (11), and the coating roller (13) is fixedly arranged on the bracket (14);

the coating machine further comprises an adjusting mechanism (15), one end of the adjusting mechanism (15) is an operating end, the other end of the adjusting mechanism (15) is in threaded connection with the machine frame (11) and is fixedly connected with the support (14), and the adjusting mechanism (15) is used for adjusting the position of the support (14) relative to the machine frame (11) so as to adjust the gap between the coating roller (13) and the soft back roller (12);

a gap is arranged between the coating roller (13) and the soft back roller (12) for forming a liquid storage space for storing the coating liquid.

2. A coater according to claim 1, wherein the centre line of the coating roll (13) and the centre line of the soft backing roll (12) are in a first plane, which forms an angle with a vertical plane, the angle formed by the first plane with the vertical plane being greater than 0 ° and smaller than 90 °.

3. A coater according to claim 1, further comprising a positioning mechanism (16), said positioning mechanism (16) being adapted to fix the position of said holder (14) with respect to said frame (11).

4. A coater according to claim 1, further comprising a coating liquid supply device disposed adjacent to the coating roller (13) for replenishing the coating liquid into the reservoir space.

5. A coater according to claim 1, wherein said clamping means (30) comprises:

a slide rail base (31) arranged along the extending direction of the base film;

the sliding clamping assembly (32) is slidably arranged on the sliding rail base (31), and the sliding clamping assembly (32) is used for clamping the base film after the liquid coating and laying the base film after the liquid coating on the platform (20) along the extending direction of the base film.

6. A coater according to claim 5, wherein said slide rail base (31) comprises a base support and a slide rail supported on said base support, said slide clamp assembly (32) being mounted on said slide rail.

7. A coater according to claim 1, further comprising:

and the curing device (40) is arranged above the platform (20) and is used for curing the base film after the coating liquid is laid on the platform (20).