A tooth mark depth adjustable mesh roller

Abstract

The utility model relates to a kind of tooth mark depth adjustable mesh roll, including seal cover, two are provided in seal cover;Further including the mesh roll body between two seal covers, six T-shaped grooves are opened in mesh roll body outer surface, T-shaped groove is sealingly slidably connected with slider, the inside of mesh roll body is hollow structure and is formed with seal cavity with seal cover, arc tooth sleeve is connected on slider, six arc tooth sleeves are connected by elastic sealing element, outer layer tooth sleeve is equipped on seal cover outside, outer layer tooth sleeve surface is equipped with mesh groove, arc tooth sleeve surface is equipped with mesh convex, inject or discharge liquid to seal cavity, push slider and drive arc tooth sleeve radial movement, for adjusting tooth mark depth;The new type is retracted by hydraulic pressure arc tooth sleeve, adjusts convex height to realize tooth mark infinitely variable depth, negative pressure is automatically retracted, spring structure is exempted from more reliable, double seal prevents oil leakage and prevents glue, fluorine rubber sealing wear resistance, stable and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of screen roller tooth mark adjustment technology, specifically a screen roller with adjustable tooth mark depth. Background Technology

[0002] Anilox rollers are key components used in the printing industry, especially in gravure and flexographic printing. They are metal or ceramic rollers with finely etched perforations (or "dots") evenly distributed across the entire roller surface. The shape, depth, angle, and line count (dots per inch, LPI) can be customized to meet printing needs. Their core functions in printing presses include: ink metering: controlling the amount of ink transferred to the printing plate to ensure consistent thickness; uniform coating: evenly distributing ink or coating materials onto the printing plate or substrate; and improved print quality: reducing color differences, streaks, and other defects through precise ink supply, thus enhancing color reproduction and clarity.

[0003] Common screen rollers have a fixed toothed structure, and the surface texture is formed during manufacturing. The depth of the toothed marks cannot be adjusted during use, which leads to many problems in actual production and affects production efficiency and product quality.

[0004] Different products have different requirements for the amount of adhesive applied. For example, the required adhesive layer thickness is different for materials such as PET protective film and PE release film. Each type of screen roller with a fixed depth can only correspond to a specific range of coating amount. Therefore, when changing product models, the corresponding screen roller must be replaced. Frequent disassembly and assembly not only increases downtime but also reduces overall production efficiency.

[0005] After long-term use, the surface of the screen roller wears down due to continuous friction with the scraper and substrate, and the tooth surface gradually becomes shallower, resulting in a continuous decrease in the actual glue load and inconsistent glue coating thickness, which affects product uniformity and yield. At this time, the only way to restore performance is to replace the screen roller, which increases production costs.

[0006] When dealing with high-precision coating requirements, especially for ultra-thin protective films (thickness less than 50μm) or functional coatings, even slight deviations in adhesive amount can cause problems such as wrinkling, missed coating, or insufficient adhesion. Fixed toothed screen rollers cannot dynamically compensate for process fluctuations, and the adjustment methods are limited to changing the screen roller speed or doctor blade pressure. These methods are difficult to accurately control the coating amount, which can easily lead to uneven adhesive application or splattering, further limiting the improvement of coating quality.

[0007] In addition, companies need to stock multiple sets of screen rollers for different product specifications, which takes up a lot of storage space, is complicated to manage, and has high inventory costs, which is especially unfavorable for small-batch, multi-variety production models. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an adjustable tooth mark depth screen roller. It features hydraulically driven arc-shaped toothed sleeves for telescopic extension and retraction, allowing for stepless adjustment of the tooth mark depth. It also boasts negative pressure retraction to eliminate the need for springs, double-seal leak prevention, wear-resistant fluororubber sealing rings, a simple and reliable structure, adaptability to varying adhesive volumes, and extended service life. This design solves the problems of common screen rollers with non-adjustable depth, requiring roller replacement during production changes, reduced adhesive capacity after wear, reliance on speed or scraper for adjustment, poor precision, numerous spare parts, high costs, and difficulty in meeting the demands of high-efficiency, multi-variety production.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an adjustable tooth mark depth screen roller, comprising a sealing cover, of which two sealing covers are provided; and a screen roller body installed between the two sealing covers. The outer surface of the screen roller body is provided with six T-shaped grooves, and a slider is slidably connected in the T-shaped grooves. The interior of the screen roller body is a hollow structure and forms a sealed cavity with the sealing cover. An arc-shaped toothed sleeve is connected to the slider, and the six arc-shaped toothed sleeves are connected by an elastic sealing element. An outer toothed sleeve is provided on the outside of the sealing cover, and the surface of the outer toothed sleeve is provided with a textured groove. The surface of the arc-shaped toothed sleeve is provided with textured protrusions. Liquid is injected or discharged into the sealed cavity, pushing the slider to drive the arc-shaped toothed sleeve to move radially, thereby adjusting the tooth mark depth.

[0010] The two sealing caps are equipped with fixed cylinders on their outer sides. The drain pipe and the inlet pipe are installed in the fixed cylinders at both ends respectively. A gear is installed on the outer surface of the fixed cylinder on the right side, and a bearing is installed on the outer side of the fixed cylinder.

[0011] Furthermore, the outer toothed sleeve is fixed to the outer end face of the two sealing caps with screws at both ends, and rotates synchronously with the sealing caps to maintain structural stability and rotational consistency.

[0012] Furthermore, the elastic seal between adjacent arc-shaped toothed sleeves is a double-seal structure, with the inner side used to prevent leakage of hydraulic fluid and the outer side used to prevent external adhesive from seeping in.

[0013] Furthermore, the T-slot opening of the roller body faces radially outward, and the slider has a T-shaped structure, which is limited and prevented from detaching during operation after being installed axially.

[0014] Furthermore, the sealing cap has an inlet pipe on the right end and an outlet pipe on the left end. The outlet creates a negative pressure environment, which causes the arc-shaped toothed sleeve to automatically retract and reset after the liquid is discharged.

[0015] Furthermore, the medium filling the sealed cavity is hydraulic oil, which is resistant to high temperatures and provides good lubrication, and is used to transmit pressure to drive the slider to move.

[0016] Furthermore, the outer circumferential surface of the arc-shaped tooth sleeve is provided with a textured protrusion, and the inner circumferential surface of the outer tooth sleeve is provided with a corresponding textured groove. By controlling the radial extension of the protrusion under hydraulic drive, the tooth mark depth can be continuously and steplessly adjusted within the range of 20μm to 300μm.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. By injecting or discharging liquid into the sealed cavity inside the screen roller body, the slider is driven to move the arc-shaped toothed sleeve radially, thereby adjusting the exposed height of the screen pattern protrusion relative to the screen pattern groove of the outer toothed sleeve in real time. This allows the tooth mark depth to be continuously and steplessly adjusted within the range of 20μm to 300μm, adapting to different glue volume requirements without replacing the screen roller, significantly improving the equipment's versatility and production flexibility.

[0019] 2. During drainage, a negative pressure environment is created, and the arc-shaped toothed sleeve automatically retracts due to the fluid suction. This simplifies the structure, avoids the use of mechanical reset components such as springs that are prone to fatigue failure, and improves the long-term operational reliability of the device.

[0020] A double-layer elastic sealing structure is adopted between adjacent arc-shaped tooth sleeves, with the inner side preventing hydraulic leakage and the outer side preventing adhesive seepage; a fluororubber lip seal is set between the slider and the T-slot, which is oil-resistant and wear-resistant, ensuring long-term stable operation of the hydraulic structure and extending the service life of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the location of the liquid inlet pipe of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the location of the drain pipe of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram showing the location of the outer toothed sleeve of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram showing the disassembled location of the screen roller body of this utility model.

[0026] In the diagram: 1. Sealing cap; 2. Mesh roller body; 3. T-slot; 4. Slider; 5. Arc-shaped toothed sleeve; 6. Outer toothed sleeve; 7. Inlet pipe; 8. Drain pipe; 9. Fixed cylinder; 10. Gear; 11. Bearing. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5 This embodiment of an adjustable tooth mark depth mesh roller includes a sealing cover 1, of which two are provided; it also includes a mesh roller body 2 installed between the two sealing covers 1. The outer surface of the mesh roller body 2 has six T-shaped grooves 3. A slider 4 is slidably connected in the T-shaped grooves 3. The inside of the mesh roller body 2 is a hollow structure and forms a sealed cavity with the sealing cover 1. An arc-shaped toothed sleeve 5 is connected to the slider 4. The six arc-shaped toothed sleeves 5 are connected by an elastic seal. An outer toothed sleeve 6 is provided on the outside of the sealing cover 1. The surface of the outer toothed sleeve 6 is provided with a textured groove. The surface of the arc-shaped toothed sleeve 5 is provided with textured protrusions. Liquid is injected or discharged into the sealed cavity, pushing the slider 4 to drive the arc-shaped toothed sleeve 5 to move radially, thereby adjusting the tooth mark depth.

[0029] A fixed cylinder 9 is provided on the outside of the two sealing caps 1. The drain pipe 8 and the inlet pipe 7 are respectively installed in the fixed cylinders 9 at both ends. A gear 10 is installed on the outer surface of the fixed cylinder 9 on the right side. A bearing 11 is installed on the outside of the fixed cylinder 9.

[0030] In this embodiment, the hydraulically driven slider 4 drives the arc-shaped toothed sleeve 5 to extend and retract, adjusting the exposed height of the textured protrusions and achieving stepless adjustment of the tooth mark depth. This adapts to different adhesive volume requirements, improving versatility and production efficiency. During drainage, the sleeve automatically retracts using negative pressure suction, eliminating the need for spring reset. This simplifies the structure and ensures reliable operation. Double seals prevent hydraulic leakage and adhesive seepage. The fluororubber lip seal is oil-resistant and wear-resistant, ensuring long-term stable operation of the hydraulic system and extending its service life.

[0031] It should be noted that the outer toothed sleeve 6 is fixed to the outer end face of the two sealing caps 1 by screws at both ends, and rotates synchronously with the sealing caps 1 to maintain structural stability and rotational consistency. The outer circumferential surface of the arc-shaped toothed sleeve 5 is provided with a textured protrusion, and the inner circumferential surface of the outer toothed sleeve 6 is provided with a corresponding textured groove. By controlling the radial extension of the protrusion under hydraulic drive, the tooth mark depth can be continuously and steplessly adjusted within the range of 20μm to 300μm. The outer toothed sleeve 6 is fixed to the sealing cap 1 by screws and rotates synchronously with the sealing cap 1 to ensure structural stability and smooth rotation. The surface of the arc-shaped toothed sleeve 5 is provided with a textured protrusion, which cooperates with the textured groove on the inner circumference of the outer toothed sleeve 6 to form a variable coating surface. By controlling the radial extension of the protrusion by hydraulic control, the tooth mark depth can be continuously and steplessly adjusted within the range of 20μm to 300μm to adapt to different coating amount requirements and improve production flexibility and coating accuracy.

[0032] Please see Figures 4-5In this embodiment, for the sake of simple structure and durability, a double-seal fluororubber sealing ring is used to prevent oil leakage and glue ingress, and has high durability. In this embodiment, the outer toothed sleeve 6 is fixed to the outer end face of the two sealing caps 1 by screws at both ends, and rotates synchronously with the sealing caps 1 to maintain structural stability and rotational consistency. The elastic seal between adjacent arc-shaped toothed sleeves 5 is a double-seal structure. The inner side is used to prevent hydraulic fluid leakage, and the outer side is used to prevent external glue from seeping in. The T-groove 3 of the screen roller body 2 opens radially outward. The slider 4 is a T-shaped structure. After being installed axially, it is limited and prevented from falling off during operation. The sealing cap 1 has an inlet pipe 7 on the right end and an outlet pipe 8 on the left end. A negative pressure environment is formed by draining the liquid, so that the arc-shaped toothed sleeve 5 automatically retracts and resets after the liquid is discharged.

[0033] In this embodiment, the outer toothed sleeve 6 is fixed to the sealing cover 1 with screws and rotates synchronously with the sealing cover 1. The structure is simple and reliable, and the operation is stable and not easily damaged. The double elastic seal between adjacent arc-shaped toothed sleeves 5 effectively prevents leakage of hydraulic cavity and seepage of external adhesive, improving sealing performance and service life. The T-slot 3 opens radially outward and automatically limits and prevents detachment after being axially inserted with the T-slot slider 4, ensuring smooth sliding and no loosening. The liquid inlet pipe 7 and the liquid outlet pipe 8 are respectively located at both ends of the sealing cover 1. The negative pressure formed by the liquid outlet enables the arc-shaped toothed sleeve 5 to automatically retract, eliminating the need for additional reset components, simplifying the structure and improving reliability.

[0034] It should be noted that the arc-shaped toothed sleeve 5 is a split splicing structure, and a single damaged unit can be replaced individually, reducing maintenance costs; the overall structure is compact and integrated inside the screen roller, without taking up extra equipment space, making it easy to upgrade and modify existing coating equipment.

[0035] It should be added that the medium filled in the sealed cavity is hydraulic oil, which is resistant to high temperature and has good lubrication. It is used to transmit pressure to drive the slider 4 to move. The textured protrusions of the arc-shaped toothed sleeve 5 are aligned with the textured grooves of the outer toothed sleeve 6 in the axial and circumferential directions to form a continuous coating surface. The scraper acts on the surface of the outer toothed sleeve 6 and does not directly contact the moving parts.

[0036] The lip seal between slider 4 and T-slot 3 is made of fluororubber, which is oil-resistant and temperature-resistant up to 200℃, making it suitable for high-temperature coating environments; the screen roller body 2 is made of stainless steel or aluminum alloy, which is high-strength and corrosion-resistant.

[0037] The working principle of the above embodiments is as follows:

[0038] In use, the screen roller is installed on the coating equipment. The bearing 11 on the outside of the fixed cylinder 9 supports the rotation of the entire screen roller. The gear 10 meshes with the external reduction motor to drive the screen roller to rotate. The outer toothed sleeve 6 is fixed to the sealing cover 1 by screws and rotates synchronously with the sealing cover 1 to maintain stable operation. During coating, the screen roller is partially immersed in the glue tray, and the surface texture contacts the glue. The doctor blade scrapes off the excess glue to control the initial coating thickness. When it is necessary to adjust the tooth mark depth, the external liquid injection machine injects liquid into the sealed cavity through the liquid inlet pipe 7. The liquid pressure acts evenly on the bottom of each slider 4, pushing the slider 4 to slide radially outward along the T-slot 3, which drives the arc-shaped toothed sleeve 5 to move outward synchronously. This causes the textured protrusions on the surface of the arc-shaped toothed sleeve 5 to gradually emerge from the textured groove of the outer toothed sleeve 6. As the protrusion height increases, the tooth mark depth increases accordingly, and the glue loading increases. When it is necessary to reduce the tooth mark depth, the liquid injection machine stops supplying liquid. When the liquid is drained from the sealed cavity, the external suction device slowly drains the liquid, creating a negative pressure environment inside the cavity. Under the negative pressure suction, the arc-shaped toothed sleeve 5 retracts inward as a whole, and the textured protrusions gradually retract into the textured grooves, reducing the depth of the tooth marks and the amount of adhesive. The entire adjustment process does not require stopping the machine and can be adjusted in real time during operation to adapt to different adhesive concentrations and coating requirements. The double elastic seal between adjacent arc-shaped toothed sleeves 5 effectively prevents leakage from the hydraulic cavity and seepage of external adhesive. A fluororubber lip seal is provided between the slider 4 and the T-slot 3, which is oil-resistant and wear-resistant, ensuring sealing performance. The opening of the T-slot 3 faces radially outward. The slider 4 has a T-shaped structure and is automatically limited after axial insertion to prevent it from coming off during operation. A single damaged arc-shaped toothed sleeve 5 can be disassembled and replaced individually, making maintenance convenient. The overall structure is compact, does not occupy extra space, and is easy to modify and apply to existing equipment.

[0039] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] 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 mesh roller with adjustable tooth mark depth, comprising a sealing cover (1), wherein two sealing covers (1) are provided; characterized in that: It also includes a screen roller body (2) installed between two sealing covers (1). The outer surface of the screen roller body (2) is provided with six T-shaped grooves (3). A slider (4) is slidably connected in the T-shaped grooves (3). The inside of the screen roller body (2) is a hollow structure and forms a sealed cavity with the sealing cover (1). An arc-shaped toothed sleeve (5) is connected to the slider (4). The six arc-shaped toothed sleeves (5) are connected by an elastic seal. An outer toothed sleeve (6) is provided on the outside of the sealing cover (1). The surface of the outer toothed sleeve (6) is provided with a mesh groove. The surface of the arc-shaped toothed sleeve (5) is provided with a mesh protrusion. Liquid is injected or discharged into the sealed cavity, pushing the slider (4) to drive the arc-shaped toothed sleeve (5) to move radially, which is used to adjust the tooth mark depth. A fixed cylinder (9) is provided on the outside of the two sealing caps (1). The drain pipe (8) and the inlet pipe (7) are respectively installed in the fixed cylinders (9) at both ends. A gear (10) is installed on the outer surface of the fixed cylinder (9) on the right side. A bearing (11) is installed on the outside of the fixed cylinder (9).

2. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The outer toothed sleeve (6) is fixed to the outer end face of the two sealing caps (1) by screws at both ends, and rotates synchronously with the sealing caps (1) to maintain structural stability and rotation consistency.

3. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The elastic seal between adjacent arc-shaped toothed sleeves (5) is a double-seal structure. The inner side is used to prevent leakage of hydraulic fluid, and the outer side is used to prevent external adhesive from seeping in.

4. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The T-groove (3) of the roller body (2) opens to the radial outward, and the slider (4) is a T-shaped structure. After being installed axially, it is limited and prevented from detaching during operation.

5. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The sealing cap (1) has an inlet pipe (7) on the right end and a drain pipe (8) on the left end. The drain creates a negative pressure environment, which causes the arc-shaped toothed sleeve (5) to automatically retract and reset after the liquid is discharged.

6. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The medium filling the sealed cavity is hydraulic oil, which is resistant to high temperature and has good lubrication. It is used to transmit pressure to drive the slider (4) to move.

7. The adjustable tooth mark depth screen roller according to claim 1, characterized in that: The outer circumferential surface of the arc-shaped tooth sleeve (5) is provided with a textured protrusion, and the inner circumferential surface of the outer tooth sleeve (6) is provided with a corresponding textured groove. By controlling the radial extension of the protrusion under hydraulic drive, the tooth mark depth can be continuously and steplessly adjusted in the range of 20μm to 300μm.

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