A coating equipment for producing high-barrier films

Abstract

This utility model relates to the technical field of coating equipment for high-barrier film production, specifically disclosing a coating equipment for high-barrier film production, including: a support, a circular roller, a scraper on one side of the circular roller, the front end of the scraper adhering to the surface of the substrate conveyed after coating by the circular roller, the scraper smoothing uneven coating parts on the substrate surface, cleaning mechanisms on both sides of the scraper, cleaning the adhesive when too much adhesive accumulates at the front end of the scraper, and a switching mechanism at the top of the scraper, switching to a spare scraper when too much adhesive solidifies at the front end of the scraper. This coating equipment for high-barrier film production can absorb excess adhesive from the edge of the scraper in real time through the liquid tank and suction pump in the cleaning mechanism, preventing adhesive from accumulating on the back of the substrate or corroding the functional layer. The switching mechanism at the top of the scraper monitors the scraper status in real time through a pressure sensor, automatically switching to a spare scraper when adhesive solidifies and causes blockage, reducing the frequency of equipment downtime maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of coating equipment for the production of high-barrier films, specifically a coating equipment for the production of high-barrier films. Background Technology

[0002] High-barrier film production coating equipment is used to uniformly coat or deposit a functional layer with high barrier properties on the surface of a substrate. The coating machine achieves colloid coating through a doctor blade or roller coating method, adapting to materials with different viscosities and curing conditions. The core purpose of this equipment is to isolate oxygen, moisture, and odor molecules through coating, meeting the stringent requirements for material protection in terms of sealing, moisture resistance, and oxidation prevention. It is widely used in industrial fields requiring long-term stable storage or special environmental protection.

[0003] The potential for paint overflow during coating with a rear-mounted doctor blade can lead to contamination of the substrate back or corrosion of the functional layer, affecting product quality. Residual paint accumulates during use, easily causing doctor blade blockage and requiring manual cleaning, disrupting production continuity and efficiency. These issues collectively impact the stability, cleanliness, and production efficiency of the coating process. Therefore, we propose a coating equipment for high-barrier film production. Utility Model Content

[0004] The purpose of this invention is to provide a coating equipment for the production of high-barrier films, in order to solve the problems mentioned in the background art, such as paint overflow causing contamination of the back of the substrate or corrosion of the functional layer, affecting product quality, and residual paint accumulating during use, which can easily cause clogging of the scraper.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coating equipment for producing high-barrier films, comprising: a support and a circular roller, a scraper and a spare scraper are provided on one side of the circular roller, the front end of the scraper is attached to the surface of the substrate conveyed after the circular roller has finished coating, the scraper smooths the uneven coating part on the surface of the substrate, a cleaning mechanism is provided on both sides of the scraper, the cleaning mechanism cleans the adhesive when too much adhesive accumulates at the front end of the scraper, and a switching mechanism is provided at the top of the scraper, the switching mechanism switches to the spare scraper when too much adhesive solidifies at the front end of the scraper.

[0006] The cleaning mechanism includes liquid passages on both sides of the scraper, liquid passages with liquid passage holes, liquid passage holes with fixed connections to suction pipes, and suction pipes with fixed connections to suction pumps.

[0007] The switching mechanism includes a scraper lifting arm fixedly connected to the bracket. A shaft seat is fixedly connected to the upper part of the scraper lifting arm. A rotating shaft is rotatably connected to the shaft seat. Two scraper fixing seats are fixedly connected to the rotating shaft. A pressure sensor is fixedly connected to each scraper fixing seat. The pressure sensor is fixedly connected to the corresponding scraper. A spare scraper is fixedly connected to the pressure sensor on the other side of the rotating shaft. A glue supply pump is provided on the side of the bracket.

[0008] The scraper has an anti-stick strip at the front end.

[0009] A scale is provided on the outside of the scraper lifting arm.

[0010] The scraper holder is equipped with a color-coded label.

[0011] The glue supply pump is equipped with a filter screen at its inlet.

[0012] This utility model has at least the following beneficial effects: In use, this invention utilizes a liquid-passing tank and a suction pump in the cleaning mechanism to absorb excess adhesive from the edge of the scraper in real time, preventing adhesive buildup on the back of the substrate or corrosion of the functional layer, thereby improving the surface quality and barrier performance of the product. The switching mechanism at the top of the scraper monitors the scraper status in real time through a pressure sensor, automatically switching to a backup scraper when adhesive solidifies and causes blockage, reducing the frequency of equipment downtime for maintenance. The precision structural design of the scraper lifting arm and rotating shaft ensures a fast and stable switching process. Combined with the application of corrosion-resistant materials and wear-resistant coatings, the service life of key components of the equipment is extended. The overall structure, through automated control and modular design, achieves continuity, stability, and efficiency in the coating process, providing reliable technical support for the large-scale production of high-barrier films. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a rear oblique view of the structure of this utility model; Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model; Figure 4 This is a schematic diagram of the switching mechanism of this utility model.

[0014] In the diagram: 1. Support; 2. Circular roller; 3. Scraper; 4. Cleaning mechanism; 41. Liquid passage tank; 42. Liquid passage hole; 43. Suction pipe; 44. Suction pump; 5. Switching mechanism; 51. Scraper lifting arm; 52. Shaft seat; 53. Rotating shaft; 54. Scraper fixing seat; 55. Pressure sensor; 56. Spare scraper; 57. Adhesive supply pump; 6. Anti-stick strip; 7. Ruler; 8. Color identification plate; 9. Filter screen. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Please see Figure 1-4 This utility model provides a technical solution: a coating equipment for producing high-barrier films, comprising: a support 1 and a circular roller 2, a scraper 3 and a spare scraper 56 above the circular roller 2, the front end of the scraper 3 is attached to the surface of the substrate conveyed after the circular roller 2 has finished coating, the scraper 3 scrapes the uneven coating part on the surface of the substrate, a cleaning mechanism 4 is provided on both sides of the scraper 3, the cleaning mechanism 4 cleans the adhesive when too much adhesive accumulates at the front end of the scraper 3, and a switching mechanism 5 is provided at the top of the scraper 3, the switching mechanism 5 switches to the spare scraper 56 when too much adhesive solidifies at the front end of the scraper 3.

[0017] The cleaning mechanism 4 includes liquid channels 41 on both sides of the scraper 3. Each liquid channel 41 has a liquid channel 42, and a suction pipe 43 is fixedly connected to each liquid channel 42. A suction pump 44 is fixedly connected to each suction pipe 43. The liquid channels 41 are spaced apart along the length of the scraper 3. The liquid channel 42 is designed to enhance suction. The suction pipe 43 is made of corrosion-resistant material and is connected to the suction pump 44. The suction pump 44 can adjust the suction intensity according to the characteristics of the adhesive. When the scraper 3 scrapes off the uneven adhesive on the substrate surface, the excess adhesive will gradually move to both sides along the surface of the scraper 3. When the adhesive gradually moves to the liquid channels 41 on both sides of the scraper 3, the suction pump 44 first operates at maximum power and then switches to maintenance power to suck out the adhesive concentrated in the liquid channel through the liquid channel. The cleaning mechanism 4 continues to work to keep the overflow within the normal range.

[0018] The switching mechanism 5 includes a scraper lifting arm 51 fixedly connected to the bracket 1. A bearing seat 52 is fixedly connected to the upper part of the scraper lifting arm 51. A rotating shaft 53 is rotatably connected to the bearing seat 52. A scraper fixing seat 54 is fixedly connected to the rotating shaft 53. A pressure sensor 55 is fixedly connected to the scraper 3. When the pressure sensor 55 detects abnormal pressure on the cutting edge of the scraper 3, the control system determines that the glue has solidified, causing the scraper 3 to become blocked. At this time, the drive motor of the scraper lifting arm 51 starts, lifting the main scraper 3 to a safe position. The rotating shaft 53 rotates to make the spare scraper 56 enter the working position. The spare scraper 56 is fixedly connected to the rotating shaft 53 through the scraper fixing seat 54, forming a symmetrical structure with the main scraper 3. After the switching process is completed, the pressure sensor 55 automatically calibrates, and the equipment restores its operating parameters. A glue supply pump 57 is provided on the side of the bracket. The glue supply pump 57 controls the glue delivery status in real time during the scraper switching process. The pump is briefly paused during scraper switching to ensure stable glue delivery and coordinated operation of the equipment.

[0019] Example 2 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that the front end of the scraper 3 is provided with an anti-stick strip 6. The anti-stick strip 6 is made of Teflon coating and is used to prevent the adhesive from adhering to the surface of the scraper 3. The anti-stick strip 6 is located on the surface of the scraper 3 to reduce adhesive residue and reduce the cleaning frequency of the scraper 3. A scale 7 is provided on the outer side 51 of the scraper lifting arm for visual observation to confirm whether the scraper 3 is in position. A color identification plate 8 is provided on the scraper fixing seat 54. The identification plate 8 is laser-engraved to distinguish different models of scrapers for quick identification and replacement. A filter screen 9 is added to the feed port of the glue pump 57 to filter particulate impurities in the glue, prevent impurities from entering the pipeline or scraper area and causing blockage, extend the service life of the scraper and pipeline, reduce manual cleaning procedures, and improve overall operating efficiency and reliability.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating equipment for producing high-barrier films, comprising: The bracket and the circular roller are characterized in that: a scraper and a spare scraper are provided on one side of the circular roller, the front end of the scraper is in contact with the surface of the substrate conveyed after the roller has applied glue, the scraper smooths the uneven glue application on the surface of the substrate, a cleaning mechanism is provided on both sides of the scraper, the cleaning mechanism cleans the glue when too much glue accumulates at the front end of the scraper, and a switching mechanism is provided at the top of the scraper, the switching mechanism switches to the spare scraper when too much glue solidifies at the front end of the scraper.

2. The coating equipment for producing high-barrier films according to claim 1, characterized in that: The cleaning mechanism includes liquid passages on both sides of the scraper, liquid passages having liquid passage holes, liquid passage holes being fixedly connected to suction pipes, and suction pipes being fixedly connected to suction pumps.

3. The coating equipment for producing high-barrier films according to claim 2, characterized in that: The switching mechanism includes a scraper lifting arm fixedly connected to the bracket. A shaft seat is fixedly connected to the upper part of the scraper lifting arm. A rotating shaft is rotatably connected to the shaft seat. Two scraper fixing seats are fixedly connected to the rotating shaft. A pressure sensor is fixedly connected to each scraper fixing seat. The pressure sensor is fixedly connected to the corresponding scraper. A spare scraper is fixedly connected to the pressure sensor on the other side of the rotating shaft. A glue supply pump is provided on the side of the bracket.

4. The coating equipment for producing high-barrier films according to claim 1, characterized in that: The scraper has an anti-sticking strip at its front end.

5. The coating equipment for producing high-barrier films according to claim 3, characterized in that: A scale is provided on the outside of the scraper lifting arm.

6. The coating equipment for producing high-barrier films according to claim 3, characterized in that: The scraper holder is equipped with a color-coded label.

7. The coating equipment for producing high-barrier films according to claim 3, characterized in that: The glue supply pump is equipped with a filter screen at its inlet.

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