Scraper mechanism and gravure coating system

Abstract

The utility model discloses a scraper mechanism and a gravure coating system.The scraper mechanism comprises a mounting frame suitable for being fixed to one side of a gravure roller; the scraper assembly is rotationally connected with the mounting frame within a preset angle, and a blade of the scraper assembly can abut against or be separated from the roller surface of the gravure roller; and the elastic piece is connected with the mounting frame and the scraper assembly, and the elastic piece can apply force to the scraper assembly and enable a cutting edge of the scraper assembly to elastically abut against the roller surface of the gravure roller. Through the design of the elastic piece and the scraper assembly, the scraper has elasticity when abutting against the gravure roller, when the scraper makes contact with hard foreign matter on the surface of the gravure roller, the foreign matter can bounce off the scraper, after the foreign matter passes through the scraper, the scraper elastically abuts against the gravure roller again under the action of the elastic piece, and therefore the abrasion and damage degree of the scraper is reduced, and the service life of the gravure roller is prolonged. And the service life of the scraper is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of gravure coating, and in particular to a scraper mechanism and a gravure coating system. Background Art

[0002] Gravure coating refers to the process of carrying paint through the rotation of a gravure roller. After the paint in the blank area is scraped off by a scraper, the remaining paint only remains in the grooves on the surface of the gravure roller. Under greater pressure, the paint in the above grooves can be transferred to the surface of the substrate.

[0003] The scraper in the prior art is generally fixed on one side of the gravure roller and needs to be in contact with the gravure roller for a long time. However, sometimes there are hard foreign objects on the roller surface of the gravure roller. When the scraper directly contacts the foreign objects, there are problems that the scraper is severely worn and easily damaged. Utility Model Content

[0004] Based on this, it is necessary to propose a scraper mechanism and a gravure coating system to address the above technical problems.

[0005] In one aspect of the present application, a scraper mechanism is provided, comprising:

[0006] A mounting frame adapted to be fixed to one side of the gravure roller;

[0007] A scraper assembly is rotatably connected to the mounting frame within a preset angle, and the blade of the scraper assembly can abut against or separate from the roller surface of the gravure roller;

[0008] An elastic member is connected to the mounting frame and the scraper assembly. The elastic member can apply force to the scraper assembly and make the blade of the scraper assembly elastically abut against the roller surface of the gravure roller.

[0009] In some embodiments, the scraper assembly includes:

[0010] scraper;

[0011] A knife seat, which is rotatably connected to the mounting frame within a preset angle and is connected to one end of the elastic member;

[0012] A pressing sheet is connected to the knife seat and is suitable for pressing and fixing the scraper on the knife seat.

[0013] In some embodiments, it also includes:

[0014] An adjustment assembly is connected to the mounting frame and is suitable for moving the mounting frame and the scraper assembly.

[0015] In some embodiments, the adjustment component includes:

[0016] Fixing nut;

[0017] An adjusting screw is passed through the fixing nut and is threadedly connected to the fixing nut. The adjusting screw is fixedly connected to the mounting frame.

[0018] In some embodiments, the adjustment component further comprises:

[0019] A locking nut is sleeved on the adjusting screw and is threadably connected to the adjusting screw.

[0020] In a second aspect of the present application, a gravure coating system is also proposed, comprising:

[0021] Gravure coating mechanism;

[0022] Paint supply mechanism;

[0023] The scraper mechanism described above.

[0024] In some embodiments, the gravure coating mechanism comprises:

[0025] Gravure roller;

[0026] Lower pressure roller;

[0027] The first moving assembly and the second moving assembly are respectively connected to the gravure roller and the lower pressing roller, and are suitable for moving the gravure roller and the lower pressing roller.

[0028] In some embodiments, the coating supply mechanism includes:

[0029] A material box, which is suitable for storing paint, and the upper side of the material box is provided with an opening, and the roller surface of the gravure roller can be soaked in the paint through the opening of the material box;

[0030] A paint supply assembly, connected to the material box and suitable for supplying paint into the material box;

[0031] A liquid level sensor is connected to the paint supply assembly and is suitable for detecting the liquid level of the paint in the material box. When the paint level drops to a preset position, the liquid level sensor can send an electrical signal to the paint supply assembly to control the paint supply assembly to supply paint to the material box.

[0032] In some embodiments, an overflow port is provided at a preset position of the material box, and the paint in the material box can flow out from the overflow port.

[0033] In some embodiments, the gravure coating system further comprises:

[0034] The unwinding and rewinding mechanism is suitable for unwinding and rewinding the substrate;

[0035] The drying mechanism is suitable for drying the coating on the surface of the substrate.

[0036] Compared with the prior art, the beneficial effects of this application are:

[0037] The problem that the scraper is easy to wear and damage in the prior art is solved. Through the design of the elastic part and the scraper assembly, the scraper has elasticity when it abuts against the gravure roller. When the scraper contacts a hard foreign object on the surface of the gravure roller, the foreign object can bounce the scraper away. After the foreign object passes, the scraper is elastically abutted against the gravure roller again under the action of the elastic part, thereby reducing the wear and damage of the scraper and extending the service life of the scraper.

[0038] The setting of the adjustment component allows the scraper mechanism to be flexibly adjusted according to actual conditions, meeting the requirements for the scraper position in different situations, and improving the flexibility and stability during the gravure coating process.

[0039] The material box in the coating system is equipped with a paint supply component and a liquid level sensor, which can monitor the paint level in real time and replenish it in time, ensuring the continuous supply and stability of the paint during the coating process and improving the efficiency and quality of the coating.

[0040] The unwinding and rewinding mechanism is set up to facilitate the operation and processing of the substrate, while improving the automation level of the production line, reducing manual operations, and improving production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram showing a scraper mechanism in an exemplary embodiment of the present application;

[0042] Figure 2 This is a schematic diagram showing a gravure coating system in an exemplary embodiment of the present application;

[0043] Figure 3 for Figure 2 A partial enlarged schematic diagram of the .

[0044] In the figure: 1. scraper mechanism; 11. mounting frame; 121. scraper; 122. knife holder; 123. pressing plate; 13. elastic member; 14. fixing nut; 15. adjusting screw; 16. anti-loosening nut; 2. gravure roller; 3. material box; 31. liquid level sensor; 32. overflow port; 4. lower pressure roller; 51. first fixed plate; 52. first guide rail; 53. first lifting frame; 54. first servo cylinder; 61. second fixed plate; 62. second guide rail; 63. second lifting frame; 64. second servo cylinder; 7. unwinding and rewinding mechanism; 8. drying mechanism; 9. substrate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] As described in the background technology, gravure coating refers to the process of carrying coating by rotating a gravure roller. After the coating in the blank area is scraped off by a scraper, the remaining coating only remains in the grooves on the surface of the gravure roller. Under a relatively large pressure, the coating in the grooves can be transferred to the surface of the substrate. The scraper in the prior art is generally fixed to one side of the gravure roller and needs to be in contact with the gravure roller for a long time. However, there are sometimes hard foreign objects on the roller surface of the gravure roller. When the scraper directly contacts the foreign objects, there are problems that the scraper is severely worn and easily damaged.

[0049] In order to improve the above problems, in the first aspect of the present application, a scraper mechanism 1 is proposed, referring to Figure 1 , which mainly includes a mounting frame 11, a scraper assembly, an elastic member 13 and an adjusting assembly.

[0050] Specifically, in the exemplary embodiment, the mounting frame 11 is made of a rigid metal material, is suitable for carrying the doctor blade assembly, and is fixed to one side of the gravure roller 2 .

[0051] Specifically, in the exemplary embodiment, the scraper assembly is rotatably connected to the mounting frame 11 within a preset angle, and the blade of the scraper assembly can abut against or separate from the roller surface of the gravure roller 2 .

[0052] Furthermore, the above-mentioned preset angle should be limited to between 5°-10° to avoid the scraper assembly from rotating out of control when the angle is too large, and to avoid the blade of the scraper assembly and the roller surface of the gravure roller 2 being separated when the angle is too small, so that the distance between the two is too small to allow hard foreign objects to pass through.

[0053] Furthermore, in the exemplary embodiment, the scraper assembly includes a scraper 121, a blade holder 122 and a pressing piece 123. The blade holder 122 is rotatably connected to the mounting frame 11 within a preset angle and is connected to one end of the elastic member 13; the pressing piece 123 is connected to the blade holder 122 and is suitable for pressing and fixing the scraper 121 on the blade holder 122.

[0054] Specifically, in the exemplary embodiment, the elastic member 13 is specifically a tension spring, and its two ends are respectively connected to the mounting frame 11 and the blade holder 122. The elastic member 13 can apply tension to the scraper assembly and make the blade of the scraper 121 elastically abut against the roller surface of the gravure roller 2. When the scraper 121 contacts a hard foreign object on the surface of the gravure roller 2, the foreign object can bounce the scraper 121 away. After the foreign object passes, under the action of the elastic member 13, the scraper 121 elastically abuts against the gravure roller 2 again, thereby reducing the wear and damage of the scraper 121 and extending the service life of the scraper 121.

[0055] Specifically, in the exemplary embodiment, the adjustment assembly is connected to the mounting frame 11 and is adapted to move the mounting frame 11 and the scraper assembly.

[0056] Further, in an exemplary embodiment, the adjustment assembly includes a fixing nut 14, an adjusting screw 15 and a locking nut 16. Among them, the fixing nut 14 is suitable for being fixedly connected to the outer wall of the material box 3 described below. The adjusting screw 15 is inserted into the fixing nut 14 and is threadedly connected to the fixing nut 14. The upper end of the adjusting screw 15 is fixedly connected to the mounting frame 11. By rotating the adjusting screw 15, the vertical position of the mounting frame 11 and the scraper assembly can be adjusted, which is convenient for system maintenance; the locking nut 16 is sleeved on the adjusting screw 15 and is threadedly connected to the adjusting screw 15. The locking nut 16 is suitable for abutting against the fixing nut 14. When the two are abutted, the loosening and slight rotation of the adjusting screw 15 can be reduced. When the position of the scraper assembly needs to be adjusted, the locking nut 16 can be rotated to separate the locking nut 16 from the fixing nut 14, and then the adjusting screw 15 can be rotated.

[0057] Specifically, in the exemplary embodiment, two scraper mechanisms 1 are provided and are respectively located on both sides of the gravure roller 2 , wherein one scraper mechanism 1 is used to scrape off excess coating on the gravure roller 2 ; and the other scraper mechanism 1 is used to scrape off foreign matter adhered to the gravure roller 2 .

[0058] In a second aspect of the present application, a gravure coating system is also proposed, referring to Figure 2 and Figure 3 , which includes the scraper mechanism 1 described above, and also includes a gravure coating mechanism, a coating supply mechanism, a reeling and unwinding mechanism 7 and a drying mechanism 8. The gravure coating mechanism includes a gravure roller 2, a lower pressure roller 4, a first moving component and a second moving component. The first moving component and the second moving component are respectively connected to the gravure roller 2 and the lower pressure roller 4, and are suitable for moving the gravure roller 2 and the lower pressure roller 4.

[0059] Specifically, in the exemplary embodiment, the first moving assembly includes a first fixed plate 51, a first guide rail 52, a first lifting frame 53 and a first servo cylinder 54. The position of the first fixed plate 51 is relatively fixed; the position of the first guide rail 52 is relatively fixed; the first lifting frame 53 is slidably connected to the first guide rail 52 in the vertical direction, and the gravure roller 2 is rotatably arranged on the first lifting frame 53 and can be lifted and moved accordingly; the cylinder body of the first servo cylinder 54 is fixedly connected to the first fixed plate 51, and its piston rod is fixedly connected to the first lifting frame 53, and is used to drive the first lifting frame 53 to lift and move.

[0060] Specifically, in the exemplary embodiment, similar to the structure of the first moving assembly, the second moving assembly includes a second fixed plate 61, a second guide rail 62, a second lifting frame 63 and a second servo cylinder 64. The position of the second fixed plate 61 is relatively fixed; the position of the second guide rail 62 is relatively fixed; the second lifting frame 63 is slidably connected to the second guide rail 62 in the vertical direction, and the lower pressure roller 4 is rotatably arranged on the second lifting frame 63 and can be lifted and moved accordingly; the cylinder body of the second servo cylinder 64 is fixedly connected to the second fixed plate 61, and its piston rod is fixedly connected to the second lifting frame 63, which is used to drive the second lifting frame 63 to lift and move.

[0061] Furthermore, in the exemplary embodiment, two pressing rollers 4 are provided, and the two pressing rollers 4 are respectively provided on both sides above the gravure roller 2 , and are used to press down the substrate 9 so that the substrate 9 is closely attached to the gravure roller 2 .

[0062] Specifically, in the exemplary embodiment, the paint supply mechanism includes a material box 3, a paint supply assembly and a liquid level sensor 31. The material box 3 is formed into a square box structure, which is suitable for storing paint, and the upper side of the material box 3 is opened, and the roller surface of the gravure roller 2 can be soaked in paint through the opening of the material box 3; the paint supply assembly is connected to the material box 3, and is suitable for supplying paint to the material box 3, which belongs to the prior art and is not repeated here; the liquid level sensor 31 is connected to the paint supply assembly, and is suitable for detecting the liquid level of the paint in the material box 3. When the paint liquid level drops to a preset position, the liquid level sensor 31 can send an electrical signal to the paint supply assembly to control the paint supply assembly to supply paint to the material box 3.

[0063] Furthermore, in the exemplary embodiment, an overflow port 32 is provided at a preset position of the material box 3, and the paint in the material box 3 can flow out from the overflow port 32. Furthermore, the overflow port 32 is connected to the paint storage of the paint supply assembly through a pipeline, so that excess paint can flow back.

[0064] Specifically, in the exemplary embodiment, the unwinding and rewinding mechanism 7 is suitable for unwinding the substrate 9 and rewinding the substrate 9; the drying mechanism 8 is suitable for drying the coating on the surface of the substrate 9, which belongs to the prior art and will not be described in detail here.

[0065] In summary, the present application solves the problem that the scraper 121 is easy to wear and easy to damage in the prior art. Through the design of the elastic member 13 and the scraper assembly, the scraper 121 is elastic when it abuts against the gravure roller 2. When the scraper 121 contacts the hard foreign matter on the surface of the gravure roller 2, the foreign matter can bounce the scraper 121 away. After the foreign matter passes, under the action of the elastic member 13, the scraper 121 elastically abuts against the gravure roller 2 again, thereby reducing the wear and damage of the scraper 121 and extending the service life of the scraper 121. The setting of the adjustment component allows the scraper mechanism 1 to be flexibly adjusted according to actual conditions, meeting the requirements for the position of the scraper 121 under different conditions, and improving the flexibility and stability during the gravure coating process. The material box 3 in the coating system is provided with a paint supply component and a liquid level sensor 31, which can monitor the paint level in real time and replenish it in time, ensuring the continuous supply and stability of the paint during the coating process, and improving the efficiency and quality of the coating. The unwinding and rewinding mechanism 7 is provided to facilitate the operation and processing of the substrate 9, while improving the automation level of the production line, reducing manual operations, and improving production efficiency and quality.

[0066] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A scraper mechanism, characterized in that ,include: A mounting frame adapted to be fixed to one side of the gravure roller; A scraper assembly is rotatably connected to the mounting frame within a preset angle, and the blade of the scraper assembly can abut against or separate from the roller surface of the gravure roller; An elastic member is connected to the mounting frame and the scraper assembly. The elastic member can apply force to the scraper assembly and make the blade of the scraper assembly elastically abut against the roller surface of the gravure roller.

2. The scraper mechanism according to claim 1, characterized in that , the scraper assembly comprises: scraper; A knife seat, which is rotatably connected to the mounting frame within a preset angle and is connected to one end of the elastic member; A pressing sheet is connected to the knife seat and is suitable for pressing and fixing the scraper on the knife seat.

3. The scraper mechanism according to claim 1, characterized in that , also includes: An adjustment assembly is connected to the mounting frame and is suitable for moving the mounting frame and the scraper assembly.

4. The scraper mechanism according to claim 3, characterized in that , the adjustment component includes: Fixing nut; An adjusting screw is passed through the fixing nut and is threadedly connected to the fixing nut. The adjusting screw is fixedly connected to the mounting frame.

5. The scraper mechanism according to claim 4, characterized in that , the adjustment component also includes: A locking nut is sleeved on the adjusting screw and is threadably connected to the adjusting screw.

6. A gravure coating system, characterized in that ,include: The scraper mechanism according to any one of claims 1 to 5; Gravure coating mechanism; Paint supply mechanism.

7. The gravure coating system according to claim 6, characterized in that , the gravure coating mechanism comprises: Gravure roller; Lower pressure roller; The first moving assembly and the second moving assembly are respectively connected to the gravure roller and the lower pressing roller, and are suitable for moving the gravure roller and the lower pressing roller.

8. The gravure coating system according to claim 7, characterized in that , the coating supply mechanism comprises: A material box, which is suitable for storing paint, and the upper side of the material box is provided with an opening, and the roller surface of the gravure roller can be soaked in the paint through the opening of the material box; A paint supply assembly, connected to the material box and suitable for supplying paint into the material box; A liquid level sensor is connected to the paint supply assembly and is suitable for detecting the liquid level of the paint in the material box. When the paint level drops to a preset position, the liquid level sensor can send an electrical signal to the paint supply assembly to control the paint supply assembly to supply paint to the material box.

9. The gravure coating system according to claim 8, characterized in that An overflow port is provided at a preset position of the material box, and the paint in the material box can flow out from the overflow port.

10. The gravure coating system according to claim 6, characterized in that , also includes: The unwinding and rewinding mechanism is suitable for unwinding and rewinding the substrate; The drying mechanism is suitable for drying the coating on the surface of the substrate.

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