A high-precision coating roller assembly for thin film printing

Abstract

This utility model relates to the field of printing equipment technology, specifically to a high-precision coating roller assembly for thin film printing. The assembly includes a fixed frame, a motor adapted and mounted on the outside of the fixed frame, a synchronous gear located at the output end of the motor, a coating roller body rotatably connected to the inner surfaces of both sides of the fixed frame and used in conjunction with the synchronous gear, and a scraper blade located on the outside of the coating roller body. A control component includes a transmission element for transmitting the rotational power of the coating roller body when its rotational speed is too high, and a force-applying element that converts the rotational power of the transmission element into a horizontal thrust. By incorporating the control component, this utility model can not only automatically drive the scraper blade to contact the roller surface of the coating roller body to remove excess glue when the coating roller body rotates too fast, but also automatically control the scraper blade to separate from the coating roller body at low speeds, avoiding excessive hard friction.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and specifically to a high-precision coating roller assembly for thin film printing. Background Technology

[0002] High-precision coating roller assemblies for film printing can evenly and quantitatively apply adhesive to the film surface through the cooperation of the working section of the coating roller body and the doctor blade, providing good substrate pretreatment for subsequent printing ink adhesion, pattern printing and other processes, and ensuring the adhesion between the printed layer and the film.

[0003] In the prior art, a novel coating roller assembly with patent publication number CN206392330U includes a coating roller body. The coating roller body includes working sections at both ends and a connecting section between the two working sections. The diameter of the working sections is larger than the diameter of the connecting section. Mounting blocks are connected to both working sections. An annular extension is provided at the end of each working section facing the connecting section. A scraper is provided on one side of the coating roller. A protrusion is provided in the middle of the scraper. The width of the protrusion is the same as the distance between the two annular extensions. The distance between the protrusion and the connecting section is less than the diameter difference between the working section and the connecting section. The scraper is integrally formed. Multiple protrusions are provided on the outer surface of the working section. During use, the scraper is usually in continuous contact with the surface of the coating roller. However, when the coating roller rotates at a low speed, the amount of adhesive adhering to the roller surface is usually small and the fluidity is weak. Usually, it is not necessary to force the scraper to scrape the adhesive to ensure basic coating uniformity. If the scraper is still frequently subjected to hard friction with the roller surface, it will accelerate the wear rate of the roller surface, which will lead to a significant reduction in the replacement cycle of the coating tube. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-precision coating roller assembly for thin film printing, which can effectively solve the problem that frequent hard friction between the doctor blade and the surface of the coating roller will accelerate the wear rate of the roller surface in the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a high-precision coating roller assembly for thin film printing, including a coating roller assembly, a fixed frame, a motor adapted to be installed on the outside of the fixed frame, a synchronous gear disposed at the output end of the motor, a coating roller body rotatably connected to the inner surfaces of both sides of the fixed frame and used in conjunction with the synchronous gear, and a scraper located on the outside of the coating roller body. The control assembly includes a transmission component for transmitting the rotational power of the coating roller body when the rotational speed is too fast, a force-applying component for converting the rotational power of the transmission component into a horizontal thrust, a flipping component for driving the scraper blade to contact the coating roller body through the horizontal thrust of the force-applying component, and a limiting component for limiting the pushing stroke of the force-applying component. The transmission component is located on the outside of the coating roller body, the force-applying component is located on the outside of the transmission component, the flipping component is located between the force-applying component and the scraper blade, and the limiting component is located on the outside of the force-applying component; The transmission component includes a turntable fixedly sleeved on the outer end face of the coating roller body, a plurality of rotating columns integrally formed on the outer surface of the turntable, and friction blocks rotatably sleeved on the outer surface of the rotating columns.

[0006] Furthermore, the transmission component also includes a tension spring that is sequentially fixedly connected to the outer surface of the plurality of friction blocks, a friction disc sleeved on the outside of the turntable and used in conjunction with the tension spring, a rotating rod fixedly connected to the outer surface of the friction disc, and a fixing block fixedly connected to the top of the fixing frame.

[0007] Furthermore, a rotating bearing sleeve is installed at the connection between the rotating rod and the fixed block; The centrifugal force generated when the coating roller body rotates at high speed can be transmitted to the friction blocks through the turntable and the rotating column, thereby causing the multiple friction blocks to overcome the elastic force of the tension spring, swing to the position of contact with the friction disc, and drive the friction disc and the rotating rod to rotate synchronously.

[0008] Furthermore, the force-applying component includes a drive gear fixedly sleeved on the outer surface of the rotating rod, a rack meshing with the outer surface of the drive gear, a connecting block fixedly connected to the outer end face of the rack, and a push rod fixedly installed on the inner surface of the connecting block.

[0009] Furthermore, the flipping component includes a positioning block fixedly installed on the top of the fixing block, a support column rotatably connected to the inner surface of the positioning block, a mounting block fixedly sleeved on the outer surface of the support column, a connecting column fixedly connected to the outer surface of the mounting block and used in conjunction with the scraper, an inclined groove opened on the outer surface of the mounting block and used in conjunction with the connecting column, and a torsion spring sleeved on the outer side of the support column.

[0010] Furthermore, the rack is slidably connected to the inner surface of the fixing block, the outer surface of the push rod is in slidable contact with the inner wall of the inclined groove, the torsion spring is fixedly installed on the outer surface of the positioning block, and its other end is fixedly connected to the outer end face of the support column, and the outer end face of the connecting column is fixedly connected to the scraper.

[0011] Furthermore, the limiting member includes a fixed rod fixedly connected to the outer surface of the rack, a movable tooth block slidably connected to the outer surface of the fixed rod, and a spring sleeved on the outside of the fixed rod and used in conjunction with the movable tooth block.

[0012] Furthermore, the spring is fixedly installed on the outer surface of the rack, and its other end abuts against the movable tooth block.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art: This invention, by setting up a control component, can not only automatically drive the scraper to contact the roller surface of the coating roller body to scrape off excess glue when the coating roller body rotates too fast, but also automatically control the scraper to separate from the coating roller body at low speeds to avoid excessive hard friction. This achieves the effect of reducing the maintenance cost of the coating roller body while ensuring the coating accuracy of the coating roller body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a structural schematic diagram of the transmission component from another perspective in this utility model. Figure 4 This utility model Figure 3 Enlarged structural diagram of section B in the middle; Figure 5 This is a schematic diagram of the internal structure of the transmission component in this utility model; Figure 6 This is a schematic diagram of the overall structure of the flipping component in this utility model; Figure 7 This is a schematic diagram of the internal structure of the flipping component in this utility model.

[0016] The labels in the diagram represent: 100, coating roller assembly; 110, fixing frame; 120, motor; 130, synchronous gear; 140, coating roller body; 150, scraper blade; 200, control assembly; 210, transmission component; 211, turntable; 212, rotating column; 213, friction block; 214, tension spring; 215, friction disc; 216, rotating rod; 217, fixing block; 220, force application component; 221, drive gear; 222, rack; 223, connecting block; 224, push rod; 230, flipping component; 231, fixing block; 232, support column; 233, mounting block; 234, connecting column; 235, inclined groove; 236, torsion spring; 240, limiting component; 241, fixing rod; 242, movable toothed block; 243, spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example: A high-precision coating roller assembly for thin film printing, see attached figure. Figure 1 - Appendix Figure 7 ,include, The glue-applying roller assembly 100 includes a fixed frame 110, a motor 120 adapted to be installed on the outside of the fixed frame 110, a synchronous gear 130 disposed at the output end of the motor 120, a glue-applying roller body 140 rotatably connected to the inner surfaces on both sides of the fixed frame 110 and used in conjunction with the synchronous gear 130, and a glue scraper 150 located on the outside of the glue-applying roller body 140. It should be noted that the fixing frame 110 is used to provide stable support for the motor 120 and the coating roller body 140. The motor 120 can drive the coating roller body 140 to rotate around the inner surfaces on both sides of the fixing frame 110 through the synchronous gear 130. During the rotation of the coating roller body 140, it can carry the adhesive through the surface protrusion structure to provide a coating substrate for the film. The scraper blade 150 is normally separated from the coating roller body 140. When it comes into contact with the surface of the coating roller body 140, it can scrape off excess adhesive to ensure coating accuracy.

[0020] The control assembly 200 includes a transmission component 210 for transmitting the rotational power of the coating roller body 140 when the rotational speed is too fast, a force-applying component 220 for converting the rotational power of the transmission component 210 into a horizontal thrust, a flipping component 230 for driving the scraper blade 150 to contact the coating roller body 140 through the horizontal thrust of the force-applying component 220, and a limiting component 240 for limiting the pushing stroke of the force-applying component 220. The transmission component 210 is located on the outside of the glue-applying roller body 140, the force-applying component 220 is located on the outside of the transmission component 210, the flipping component 230 is located between the force-applying component 220 and the glue scraper 150, and the limiting component 240 is located on the outside of the force-applying component 220. The transmission component 210 includes a turntable 211 fixedly sleeved on the outer end face of the coating roller body 140, a plurality of rotating columns 212 integrally formed on the outer surface of the turntable 211, and a friction block 213 rotatably sleeved on the outer surface of the rotating columns 212.

[0021] Specifically, the transmission component 210 also includes a tension spring 214 that is fixedly connected to the outer surface of a plurality of friction blocks 213 in sequence, a friction disc 215 that is sleeved on the outside of the turntable 211 and used in conjunction with the tension spring 214, a rotating rod 216 that is fixedly connected to the outer surface of the friction disc 215, and a fixing block 217 that is fixedly connected to the top of the fixing frame 110.

[0022] It should be noted that the turntable 211 can rotate synchronously with the glue-applying roller body 140 and transmit the rotation speed to the rotating column 212 and the friction block 213. When the friction block 213 rotates at low speed, it is separated from the friction disc 215 under the elastic force constraint of the tension spring 214 and does not transmit power. When the friction block 213 rotates at high speed, it can overcome the force of the tension spring 214, swing outward, contact the friction disc 215 and drive it to rotate, and then drive the rotating rod 216 to rotate synchronously through the friction disc 215.

[0023] Furthermore, a rotating bearing sleeve is installed at the connection between the rotating rod 216 and the fixed block 217; The centrifugal force generated when the coating roller body 140 rotates at high speed can be transmitted to the friction block 213 through the turntable 211 and the rotating column 212, so that the multiple friction blocks 213 overcome the elastic force of the tension spring 214, swing to the position of contact with the friction disc 215, and drive the friction disc 215 and the rotating rod 216 to rotate synchronously.

[0024] Preferably, the force-applying component 220 includes a drive gear 221 fixedly sleeved on the outer surface of the rotating rod 216, a rack 222 meshing with the outer surface of the drive gear 221, a connecting block 223 fixedly connected to the outer end face of the rack 222, and a push rod 224 fixedly installed on the inner surface of the connecting block 223.

[0025] When the drive gear 221 rotates with the rotating rod 216, it can drive the connecting block 223 and the push rod 224 to move synchronously along the fixed block 217 through the rack 222.

[0026] It should be noted that the flipping component 230 includes a positioning block 231 fixedly installed on the top of the fixing block 217, a support column 232 rotatably connected to the inner surface of the positioning block 231, a mounting block 233 fixedly sleeved on the outer surface of the support column 232, a connecting column 234 fixedly connected to the outer surface of the mounting block 233 and used in conjunction with the scraper 150, a slanted groove 235 opened on the outer surface of the mounting block 233 and used in conjunction with the connecting column 234, and a torsion spring 236 sleeved on the outer side of the support column 232.

[0027] It should be further explained that the positioning block 231 is used to provide rotational support for the support column 232. The support column 232 can rotate synchronously with the mounting block 233. When the push rod 224 presses the inclined groove 235, it can drive the mounting block 233 to rotate around the support column 232. Then, through the cooperation of the mounting block 233 and the connecting column 234, the scraper blade 150 is driven to flip so that it contacts the coating roller body 140. At the same time, the torsion spring 236 is tightened to store elastic potential energy, so that when the coating roller body 140 rotates at low speed, the potential energy can be released to drive the support column 232 to reset, so that the scraper blade 150 separates from the coating roller body 140.

[0028] Furthermore, the rack 222 is slidably connected to the inner surface of the fixing block 217, the outer surface of the push rod 224 is in sliding contact with the inner wall of the inclined groove 235, the torsion spring 236 is fixedly installed on the outer surface of the positioning block 231, and its other end is fixedly connected to the outer end face of the support column 232, and the outer end face of the connecting column 234 is fixedly connected to the scraper 150.

[0029] Specifically, the limiting member 240 includes a fixed rod 241 fixedly connected to the outer surface of the rack 222, a movable tooth block 242 slidably connected to the outer surface of the fixed rod 241, and a spring 243 sleeved on the outside of the fixed rod 241 and used in conjunction with the movable tooth block 242.

[0030] It should be explained that the fixed rod 241 is used to provide a sliding track for the movable tooth block 242, which moves horizontally synchronously with the rack 222. After the fixed rod 241 of the movable tooth block 242 moves to the position of meshing with the drive gear 221, it will slide along the surface of the fixed rod 241 under the rotational thrust of the drive gear 221. Then, it will be reset by the reaction force of the spring 243, maintaining meshing with the drive gear 221, thereby limiting the position of the rack 222 and preventing it from moving excessively.

[0031] Preferably, the spring 243 is fixedly mounted on the outer surface of the rack 222, and its other end abuts against the movable tooth block 242.

[0032] When using, The motor 120 drives the coating roller body 140 to rotate around the inner surfaces of both sides of the fixed frame 110 via the synchronous gear 130. The coating roller body 140 carries the adhesive material as a film for coating through the surface protrusion structure. At this time, the scraper 150 is normally separated from the coating roller body 140. The coating roller body 140 rotates at high speed, driving the turntable 211 to rotate synchronously at high speed. The centrifugal force generated by the high-speed rotation is transmitted to the friction block 213 through the rotating column 212 via the turntable 211. This causes the friction block 213 to overcome the constraint force of the tension spring 214 and swing outward, contacting the outer friction disk 215 and driving it to rotate synchronously. This causes the friction disk 215 to drive the rotating rod 216 to rotate. When the rotating rod 216 rotates, the drive gear 221 drives the rack 222 to slide along the inner surface of the fixed block 217. Then, through the cooperation of the rack 222 and the connecting block 223, the push rod 224 moves synchronously. The push rod 224 then squeezes the inclined groove 235, causing the mounting block 233 to rotate around the support column 232. At this time, the connecting column 234, along with the mounting block 233, drives the scraper 150 to rotate to the position that contacts the coating roller body 140, scraping off the excess glue on the surface of the coating roller body 140. At the same time, the torsion spring 236 is tightened and stored. During this process, the rack 222 drives the fixed rod 241, the movable tooth block 242 and the spring 243 to move synchronously. After the movable tooth block 242 moves to the position where it meshes with the drive gear 221, it slides along the outer surface of the fixed rod 241 under the rotational thrust of the drive gear 221. Then, with the reaction force of the spring 243, the movable tooth block 242 is driven to return to its original position, so that it remains meshed with the drive gear 221, limiting the travel of the rack 222 and preventing it from moving excessively. When the rotational speed of the coating roller body 140 decreases: the friction block 213 is pulled back by the reaction force of the tension spring 214, causing it to separate from the friction disc 215. At this time, the elastic potential energy is released by the torsion spring 236, which drives the support column 232 to reset, and finally drives the scraper blade 150 to separate from the coating roller body 140.

[0033] In summary, by setting the control component 200, not only can the scraper 150 be automatically driven to contact the roller surface of the coating roller 140 to scrape off excess glue when the rotation speed of the coating roller body 140 is too fast, but the scraper 150 can also be automatically controlled to separate from the coating roller body 140 at low speeds to avoid excessive hard friction. This reduces the maintenance cost of the coating roller body 140 while ensuring the coating accuracy of the coating roller body 140.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision coating roller assembly for thin film printing, comprising, characterized in that, The glue-applying roller assembly (100) includes a fixed frame (110), a motor (120) adapted to be installed on the outside of the fixed frame (110), a synchronous gear (130) disposed at the output end of the motor (120), a glue-applying roller body (140) rotatably connected to the inner surfaces on both sides of the fixed frame (110) and used in conjunction with the synchronous gear (130), and a glue scraper (150) located on the outside of the glue-applying roller body (140). The control assembly (200) includes a transmission member (210) for transmitting the rotational power of the coating roller body (140) when the rotational speed is too fast, a force-applying member (220) for converting the rotational power of the transmission member (210) into a horizontal thrust, a flipping member (230) for driving the scraper blade (150) to contact the coating roller body (140) through the horizontal thrust of the force-applying member (220), and a limiting member (240) for limiting the pushing stroke of the force-applying member (220). The transmission component (210) is located on the outside of the coating roller body (140), the force application component (220) is located on the outside of the transmission component (210), the flipping component (230) is located between the force application component (220) and the scraper blade (150), and the limiting component (240) is located on the outside of the force application component (220). The transmission component (210) includes a turntable (211) fixedly sleeved on the outer end face of the coating roller body (140), a plurality of rotating columns (212) integrally formed on the outer surface of the turntable (211), and a friction block (213) rotatably sleeved on the outer surface of the rotating column (212).

2. The high-precision coating roller assembly for thin film printing according to claim 1, characterized in that, The transmission component (210) further includes a tension spring (214) that is fixedly connected to the outer surface of a plurality of friction blocks (213) in sequence, a friction disc (215) that is sleeved on the outside of the turntable (211) and used in conjunction with the tension spring (214), a rotating rod (216) that is fixedly connected to the outer surface of the friction disc (215), and a fixing block (217) that is fixedly connected to the top of the fixing frame (110).

3. A high-precision coating roller assembly for thin film printing according to claim 2, characterized in that, A rotating bearing sleeve is installed at the connection between the rotating rod (216) and the fixed block (217); The centrifugal force generated when the coating roller body (140) rotates at high speed can be transmitted to the friction block (213) through the turntable (211) and the rotating column (212), thereby causing the multiple friction blocks (213) to overcome the elastic force of the tension spring (214), swing to the position of contact with the friction disk (215), and drive the friction disk (215) and the rotating rod (216) to rotate synchronously.

4. A high-precision coating roller assembly for thin film printing according to claim 3, characterized in that, The force-applying component (220) includes a drive gear (221) fixedly sleeved on the outer surface of the rotating rod (216), a rack (222) meshing with the outer surface of the drive gear (221), a connecting block (223) fixedly connected to the outer end face of the rack (222), and a push rod (224) fixedly installed on the inner surface of the connecting block (223).

5. A high-precision coating roller assembly for thin film printing according to claim 4, characterized in that, The flipping component (230) includes a positioning block (231) fixedly installed on the top of the fixing block (217), a support column (232) rotatably connected to the inner surface of the positioning block (231), an mounting block (233) fixedly sleeved on the outer surface of the support column (232), a connecting column (234) fixedly connected to the outer surface of the mounting block (233) and used in conjunction with the scraper (150), a slanted groove (235) opened on the outer surface of the mounting block (233) and used in conjunction with the connecting column (234), and a torsion spring (236) sleeved on the outer side of the support column (232).

6. A high-precision coating roller assembly for thin film printing according to claim 5, characterized in that, The rack (222) is slidably connected to the inner surface of the fixing block (217), the outer surface of the push rod (224) is in sliding contact with the inner wall of the inclined groove (235), the torsion spring (236) is fixedly installed on the outer surface of the positioning block (231), and its other end is fixedly connected to the outer end face of the support column (232). The outer end face of the connecting column (234) is fixedly connected to the scraper (150).

7. A high-precision coating roller assembly for thin film printing according to claim 6, characterized in that, The limiting member (240) includes a fixed rod (241) fixedly connected to the outer surface of the rack (222), a movable tooth block (242) slidably connected to the outer surface of the fixed rod (241), and a spring (243) sleeved on the outside of the fixed rod (241) and used in conjunction with the movable tooth block (242).

8. A high-precision coating roller assembly for thin film printing according to claim 7, characterized in that, The spring (243) is fixedly installed on the outer surface of the rack (222), and its other end abuts against the movable tooth block (242).

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