A glazing machine coating device
Patent Information
- Application Number
- CN202522093169.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0004]本实用新型的目的在于克服现有技术的不足，适应现实需要，提供一种上光机涂布装置，以解决当前刮刀仅能刮除多余上光油，不便补足油量薄的区域的技术问题
Smart Images
Figure CN224736638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of varnishing technology, and more specifically, to a varnishing coating device. Background Technology
[0002] Varnishing machines are core equipment in the post-printing processing field, primarily used to varnish the surfaces of printed materials such as paper and plastic films. By forming a uniform, transparent protective film, they achieve multiple functions. Their working principle involves first uniformly applying a varnish (such as water-based, oil-based, or UV-based) to the surface of the printed material, followed by a drying process (hot air, infrared, or UV curing) to solidify the coating into a film. This equipment significantly enhances the gloss and texture of printed materials, while also improving surface abrasion resistance and water resistance, extending product lifespan. It is widely used in book covers, gift boxes, posters, labels, and other fields, making it a key piece of equipment for increasing the added value of printed materials.
[0003] In the processing of playing cards, a varnishing machine is needed to form a glossy oil film on both sides. The varnishing machine includes components such as conveying, corona treatment, coating, and drying. The coating unit, as the core execution unit, mainly uses symmetrically arranged coating rollers to apply the varnish. However, in actual use, the amount of varnish on the coating rollers is often uneven. The scraper only removes excess varnish and cannot easily replenish varnish in areas with insufficient varnish on the coating roller surface, thus affecting the quality of the varnishing of the playing cards. Therefore, we propose a coating device for a varnishing machine. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a coating device for a varnishing machine to solve the technical problem that the current doctor blade can only scrape off excess varnish and is inconvenient to replenish areas with thin varnish.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a coating device for a varnishing machine, comprising an installation mechanism and a coating mechanism and an oil scraping mechanism disposed on the installation mechanism. The installation mechanism includes a base plate, a fixing plate disposed on the base plate, and a top plate disposed on the fixing plate. The coating mechanism includes a coating roller symmetrically rotated between the fixing plates and an oiling roller for applying oil to the coating roller. The fixing plate is also provided with a driving assembly for driving the coating roller and the oiling roller. The oil scraping mechanism includes a scraper for scraping oil from the coating roller and an adjusting assembly for adjusting the position of the scraper. An oil return pipe is disposed at the middle position of the bottom surface of the scraper. An opening for moving the position of the oil return pipe is provided on the base plate.
[0006] Preferably, the shaft at one end of the oiling roller is hollow, an oiling pipe is fixed on the fixing plate, the oiling pipe extends into the oiling roller, oil outlet pipes are equidistantly arranged on the oiling pipe, an oiling cloth is provided on the outer surface of the oiling roller, and oil outlet holes are evenly opened on the oiling roller.
[0007] Preferably, the coating mechanism further includes an oil tank for supplying oil to the upper oil roller, an inlet pipe is provided on the back of the oil tank, a metering pump for pumping varnish is provided on the side of the oil tank, and a delivery pipe connected to the upper oil pipe is provided on the metering pump.
[0008] Preferably, the drive assembly includes a first gear and a second gear rotatably mounted on a fixed plate. The shaft of the first gear is connected to the shaft of the coating roller, and the shaft of the second gear is connected to the shaft of the oiling roller. The first gears are meshed with each other and with the second gear. A first mounting plate is provided on the fixed plate, and a motor for driving the first gear is provided on the first mounting plate.
[0009] Preferably, the adjustment assembly includes a second mounting plate disposed on the base plate, a threaded rod rotatably mounted between the second mounting plates, a movable block threadedly mounted on the threaded rod, a positioning rod for limiting the movable block disposed between the second mounting plates on the outside of the threaded rod, a fixing rod connected to the scraper symmetrically disposed on the side end of the movable block, and an adjustment handle for adjusting the threaded rod disposed on the second mounting plate.
[0010] Preferably, the end of the return oil pipe is connected to the oil tank, and the tail of the return oil pipe is provided with a flexible hose.
[0011] Preferably, the scraper is V-shaped along its long axis, the scraping end of the scraper is arc-shaped along its long axis, the scraper includes several oil-retaining parts along its long axis, the oil-retaining parts are curved in an arc shape, the oil-retaining parts form a wave shape for the scraper, and the end of the oil-retaining part is provided with a limiting part with a horizontal height higher than the oil-retaining part.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model designs a scraper structure in which the scraper is V-shaped along its long axis and the oil scraping end is arc-shaped. The arc-shaped scraper end can perfectly fit the outer surface of the cylindrical coating roller, ensuring efficient removal of excess varnish from the coating roller surface. The V-shaped body guides the scraped varnish to converge in the center, preventing the oil from flowing everywhere and laying the foundation for subsequent recovery and replenishment. The scraper is equipped with several arc-shaped oil storage sections along its long axis, forming a wave-shaped structure. The scraped varnish can be temporarily stored in the oil storage section. When there is a thin area of oil on the coating roller surface, the varnish in the oil storage section will automatically adhere to the area as the coating roller rotates, realizing "on-demand oil replenishment". This solves the problem that traditional scrapers can only scrape oil but cannot replenish it. The limiting part at the end of the oil storage section (horizontally higher than the oil storage section) can effectively prevent the oil from overflowing backward, further ensuring the stability of oil retention and replenishment, solving the problem that current scrapers can only scrape excess varnish and cannot easily replenish areas with thin oil.
[0013] 2. This utility model also designs an oil return pipe structure. The end of the oil return pipe in the middle of the bottom surface of the scraper is connected to the oil tank, and the tail is designed as a flexible hose. The flexible hose structure can adapt to the movement of the scraper and avoid pulling damage. The excess oil scraped off is collected by the V-shaped scraper and then flows back to the oil tank through the oil return pipe to rejoin the oil supply cycle, reducing the waste of varnishing oil, reducing production costs, and avoiding environmental pollution caused by oil leakage. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a schematic diagram of the structure of the drive component of this utility model; Figure 4 This is a schematic diagram of the oil scraping mechanism of this utility model; Figure 5 This is a front view structural diagram of the scraper of this utility model; Figure 6 This is a side view of the scraper structure of this utility model; Figure 7 This is a schematic diagram of the internal structure of the oiling roller of this utility model.
[0015] The following are the labels in the diagram: 100, Mounting mechanism; 101, Base plate; 102, Fixing plate; 103, Top plate; 200, Coating mechanism; 201, Coating roller; 202, Oiling roller; 2021, Oiling cloth; 2022, Oil outlet; 203, Oiling pipe; 2031, Oil outlet pipe; 204, Oil tank; 205, Metering pump; 206, Delivery pipe; 207, Motor; 208, Second gear; 209, First mounting plate; 210, First gear; 300, Oil scraping mechanism; 301, Second mounting plate; 302, Threaded rod; 303, Adjusting handle; 304, Moving block; 305, Fixing rod; 306, Scraper; 3061, Oil storage part; 3062, Limiting part; 307, Oil return pipe. Detailed Implementation
[0016] like Figures 1 to 7 As shown, the present invention relates to a coating device for a varnishing machine, comprising a mounting mechanism 100 and a coating mechanism 200 and an oil scraping mechanism 300 disposed on the mounting mechanism 100. The mounting mechanism 100 includes a base plate 101, a fixing plate 102 disposed on the base plate 101, and a top plate 103 disposed on the fixing plate 102. The coating mechanism 200 includes a coating roller 201 symmetrically rotatably mounted between the fixing plates 102 and an oiling roller 202 for applying oil to the coating roller 201. The fixing plate 102 is also provided with a driving assembly for driving the coating roller 201 and the oiling roller 202. The oil scraping mechanism 300 includes a scraper 306 for scraping oil from the coating roller 201 and an adjusting assembly for adjusting the position of the scraper 306. An oil return pipe 307 is disposed at the middle position of the bottom surface of the scraper 306, and an opening is provided on the base plate 101 for moving the oil return pipe 307. This utility model uses a V-shaped scraper 306 with an arc-shaped scraping end to fit the coating roller 201. It can scrape off excess oil and guide the oil to converge. The wavy oil storage part 3061 can retain oil and replenish oil in the oil-deficient areas of the coating roller 201. The limiting part 3062 prevents oil from overflowing. The oil return pipe 307 returns excess oil to the oil tank 204, reducing waste and lowering costs.
[0017] Specifically, the shaft at one end of the oiling roller 202 is hollow. An oiling pipe 203 is fixed on the fixing plate 102, extending into the oiling roller 202. Oil outlet pipes 2031 are evenly spaced on the oiling pipe 203. An oiling cloth 2021 is provided on the outer surface of the oiling roller 202, and oil outlet holes 2022 are evenly opened on the oiling roller 202. The number of oil outlet pipes 2031 can be adjusted according to the length of the oiling roller 202 to ensure that the varnish can be evenly distributed inside the oiling roller 202. The oiling cloth 2021 is made of highly absorbent polyester fiber material with a thickness of about 2-3mm, which can effectively absorb the varnish seeping out of the oiling roller 202, while preventing fiber shedding and contamination of the coating roller 201.
[0018] Furthermore, the coating mechanism 200 also includes an oil tank 204 for supplying oil to the upper oil roller 202. A feed pipe is provided on the back of the oil tank 204, and a metering pump 205 for pumping varnish is provided on the side of the oil tank 204. A delivery pipe 206 connected to the upper oil pipe 203 is provided on the metering pump 205. The metering pump 205 can control the amount of varnish delivered according to the coating requirements. Through the operation of the metering pump 205, the varnish in the oil tank 204 can be delivered to the upper oil pipe 203, thereby allowing the varnish to enter the upper oil roller 202.
[0019] Furthermore, the drive assembly includes a first gear 210 and a second gear 208 rotatably mounted on a fixed plate 102. The shaft of the first gear 210 is connected to the shaft of the coating roller 201, and the shaft of the second gear 208 is connected to the shaft of the upper oil roller 202. The first gears 210 are meshed with each other, and the first gear 210 and the second gear 208 are meshed with each other. A first mounting plate 209 is provided on the fixed plate 102, and a motor 207 for driving the first gears 210 is provided on the first mounting plate 209. When the motor 207 operates, it can rotate one of the first gears 210. Because the first gears 210 mesh with each other and with the second gear 208, the coating roller 201 and the upper oil roller 202 can rotate synchronously. The upper oil roller 202 can apply the varnish to the coating roller 201. The playing cards can be varnished by being conveyed between the coating rollers 201.
[0020] It is worth noting that the adjustment assembly includes a second mounting plate 301 disposed on the base plate 101, a threaded rod 302 rotatably mounted between the second mounting plates 301, a moving block 304 threadedly mounted on the threaded rod 302, a positioning rod for limiting the moving block 304 disposed between the second mounting plates 301 on the outside of the threaded rod 302, a fixing rod 305 connected to the scraper 306 symmetrically disposed on the side end of the moving block 304, and an adjustment handle 303 for adjusting the threaded rod 302 disposed on the second mounting plate 301. Rotating the adjusting handle 303 allows the threaded rod 302 to rotate, which in turn moves the movable block 304. The positioning rod limits the movable block 304 to prevent it from rotating and ensures its stability. The movable block 304 moves to move the scraper 306 away from or closer to the coating roller 201, facilitating precise control of the distance between the scraper 306 and the coating roller 201. During coating, the scraper 306 can scrape off excess oil from the coating roller 201.
[0021] It is worth mentioning that the end of the return oil pipe 307 is connected to the oil tank 204, and the tail of the return oil pipe 307 is set as a flexible hose. The return oil pipe 307 with a flexible hose at the tail can prevent the return oil pipe 307 from being pulled when the scraper 306 moves. The return oil pipe 307 can allow excess polishing oil on the scraper 306 to flow back into the oil tank 204.
[0022] It is worth noting that the scraper 306 is V-shaped along its long axis, and the scraping end of the scraper 306 is arc-shaped along its long axis. The scraper 306 includes several oil storage parts 3061 along its long axis. The oil storage parts 3061 are curved and arc-shaped, forming a wave shape with the scraper 306. The end of the oil storage part 3061 is provided with a limiting part 3062 that is higher than the oil storage part 3061. The limiting part 3062 prevents the varnish scraped off by the doctor blade 306 from flowing backward and overflowing. The V-shape of the doctor blade 306 guides excess varnish to flow towards the central oil return pipe 307. The arc-shaped design of the scraping end can be adapted to the outer surface of the coating roller 201. When the doctor blade 306 scrapes off the varnish on the coating roller 201, the oil will remain in the oil storage part 3061. When the amount of oil in a certain area of the coating roller 201 is insufficient, the varnish remaining in the oil storage part 3061 will adhere to the coating roller 201 to make up for the insufficient amount of oil on the coating roller 201. Only when the amount of oil in the oil storage part 3061 overflows will it flow towards the center of the doctor blade 306.
[0023] Working Principle: This embodiment provides a coating device for a varnishing machine. In use, firstly, sufficient and suitable varnish is added to the varnish storage space through the feed pipe on the back of the oil tank 204. Then, the equipment is started. At this time, the metering pump 205 on the side of the oil tank 204 begins to work. According to the preset coating oil quantity requirement, the metering pump 205 accurately delivers the varnish in the oil tank 204 through the conveying pipe 206 to the oiling pipe 203 fixed on the fixed plate 102. The oiling pipe 203 extends into the hollow shaft at one end of the oiling roller 202. The oil outlet pipes 2031 evenly distributed on it will evenly deliver the varnish to the internal cavity of the oiling roller 202. Oil outlet holes 2022 are evenly opened on the outer surface of the oiling roller 202. The varnish permeates through the oil outlet holes 2022 into the coating material. The oiling cloth 2021 on the outer surface of roller 202 is made of highly absorbent polyester fiber, which can fully absorb the varnish and maintain a uniform oil distribution. Simultaneously, the motor 207 mounted on the first mounting plate 209 on the fixed plate 102 starts. The output shaft of the motor 207 drives a first gear 210 connected to it to rotate. Since the two first gears 210 mesh with each other, and one of the first gears 210 is also meshed with the second gear 208 connected to the shaft of the oiling roller 202, the power of the motor 207 is sequentially transmitted to the two coating rollers 201 and the oiling roller 202 under the action of gear transmission, causing them to rotate synchronously. The rotating oiling roller 202, through the oiling cloth 2021 on its outer surface which absorbs the varnish, evenly coats the varnish. The varnish is applied to the surface of the coating roller 201, completing the oiling process. Next, the playing cards to be varnished are conveyed via a conveyor mechanism to the space between two symmetrically arranged coating rollers 201. The rotating coating rollers 201 transfer the varnish to both sides of the playing cards, achieving varnishing on both sides. During the rotation of the coating rollers 201, the scraping mechanism 300 begins to function. The operator can adjust the handle 303 on the second mounting plate 301 according to the amount of oil on the coating rollers 201. The handle 303 drives the threaded rod 302 to rotate. The movable block 304, threaded onto the threaded rod 302, is limited by the outer positioning rod (preventing the movable block 304 from rotating with the threaded rod 302), moving along the threaded rod 302. Moving along the axial direction, the moving block 304 drives the doctor blade 306 to move synchronously via the symmetrically arranged fixing rods 305 on its side, thereby precisely adjusting the distance between the doctor blade 306 and the outer surface of the coating roller 201. The doctor blade 306 is V-shaped along its long axis, with an arc-shaped scraping end. The arc-shaped scraping end perfectly fits the cylindrical outer surface of the coating roller 201. When the coating roller 201 rotates, the doctor blade 306 first scrapes off excess varnish from its surface. A portion of the scraped varnish is retained in several arc-shaped oil storage sections 3061 arranged along the long axis of the doctor blade 306. When there is a thin area of varnish on the surface of the coating roller 201, the varnish retained in the oil storage section 3061 will automatically adhere to the area with insufficient varnish under the action of the rotation of the coating roller 201, thereby replenishing the varnish.To ensure uniform oil coverage on the coating roller 201, a limiting part 3062 (horizontally higher than the oil storage section 3061) at the end of the oil storage section 3061 effectively prevents the scraped varnish from flowing backward and overflowing. When the varnish in the oil storage section 3061 accumulates to a certain amount and overflows, it converges towards the center along the V-shaped structure of the doctor blade 306, eventually flowing into the oil return pipe 307 located in the middle of the bottom surface of the doctor blade 306. The end of the oil return pipe 307 is connected to the oil tank 204, and its tail is a flexible hose. The flexible hose design prevents the oil return pipe 307 from being pulled and damaged when the doctor blade 306 moves. The varnish flows back to the oil tank 204 through the oil return pipe 307, realizing the recycling of the varnish. The entire process continues, ensuring that printed materials such as playing cards achieve a uniform and high-quality varnishing effect.
[0024] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A coating device for a glazing machine, characterized in that, The system includes an installation mechanism (100) and a coating mechanism (200) and an oil scraping mechanism (300) mounted on the installation mechanism (100). The installation mechanism (100) includes a base plate (101), a fixing plate (102) mounted on the base plate (101), and a top plate (103) mounted on the fixing plate (102). The coating mechanism (200) includes a coating roller (201) symmetrically rotatably mounted between the fixing plates (102) and a mechanism for applying oil to the coating roller (201). The oiling roller (202) is provided on the fixed plate (102) and a drive assembly for driving the coating roller (201) and the oiling roller (202). The oil scraping mechanism (300) includes a scraper (306) for scraping oil from the coating roller (201) and an adjustment assembly for adjusting the position of the scraper (306). An oil return pipe (307) is provided at the middle position of the bottom surface of the scraper (306). An opening for moving the oil return pipe (307) is provided on the base plate (101).
2. The coating apparatus for a varnishing machine according to claim 1, characterized in that, The shaft at one end of the oiling roller (202) is hollow. An oiling pipe (203) is fixed on the fixing plate (102). The oiling pipe (203) extends into the oiling roller (202). Oil outlet pipes (2031) are equidistantly arranged on the oiling pipe (203). An oiling cloth (2021) is provided on the outer surface of the oiling roller (202). Oil outlet holes (2022) are evenly opened on the oiling roller (202).
3. The coating apparatus for a varnishing machine according to claim 2, characterized in that, The coating mechanism (200) also includes an oil tank (204) for supplying oil to the upper oil roller (202). The back of the oil tank (204) is provided with a feed pipe, and the side of the oil tank (204) is provided with a metering pump (205) for pumping varnish. The metering pump (205) is provided with a delivery pipe (206) connected to the upper oil pipe (203).
4. The coating device of claim 3, wherein the coating device is a glazing machine. The drive assembly includes a first gear (210) and a second gear (208) rotatably mounted on a fixed plate (102). The shaft of the first gear (210) is connected to the shaft of the coating roller (201), and the shaft of the second gear (208) is connected to the shaft of the oiling roller (202). The first gears (210) are meshed with each other and with the second gear (208). A first mounting plate (209) is provided on the fixed plate (102), and a motor (207) for driving the first gear (210) is provided on the first mounting plate (209).
5. The coating device of claim 4, wherein the coating device is a glazing machine. The adjustment assembly includes a second mounting plate (301) disposed on a base plate (101), a threaded rod (302) rotatably mounted between the second mounting plates (301), a movable block (304) threadedly mounted on the threaded rod (302), a positioning rod for limiting the movable block (304) disposed between the second mounting plates (301) on the outside of the threaded rod (302), a fixing rod (305) connected to a scraper (306) symmetrically disposed on the side end of the movable block (304), and an adjustment handle (303) for adjusting the threaded rod (302) disposed on the second mounting plate (301).
6. The coating device of claim 5, wherein the coating device is a glazing machine. The end of the return oil pipe (307) is connected to the oil tank (204), and the tail of the return oil pipe (307) is a flexible hose.
7. The coating device of claim 1, wherein the coating device is a glazing machine. The scraper (306) is V-shaped along its long axis. The scraping end of the scraper (306) is arc-shaped along its long axis. The scraper (306) includes several oil storage parts (3061) along its long axis. The oil storage parts (3061) are curved and arc-shaped. The oil storage parts (3061) make the scraper (306) wavy. The end of the oil storage part (3061) is provided with a limiting part (3062) with a horizontal height higher than the oil storage part (3061).