Abrasive cloth coating apparatus

Abstract

The application provides a sand cloth gluing equipment, and belongs to the technical field of gluing equipment. The sand cloth gluing equipment comprises a rack, a glue groove, a gluing roller rotatably connected to the rack, and a rotating roller rotatably connected to the rack. Each sliding cylinder is provided with a rotating cylinder. The end of each sliding cylinder away from the rack is abutted with a rotating cylinder. The rotating cylinder can rotate with the rotating roller. The side walls of the two rotating cylinders close to each other are provided with inclined planes. The sand cloth is in contact with the inclined planes of the two rotating cylinders during conveying. Two scrapers are provided. Each scraper is arranged at the inclined plane of a rotating cylinder. The scraper can scrape the glue on the inclined plane of the rotating cylinder during the rotation of the rotating cylinder and convey the scraped glue to the glue groove. The application has the effect of reducing the influence of subsequent processing of the glue sand cloth.

Description

Technical Field

[0001] This invention relates to the field of adhesive coating equipment technology, and specifically to an adhesive coating equipment for sandpaper. Background Technology

[0002] Abrasive cloth is made by evenly bonding abrasive or sanding particles to a sturdy cloth base with adhesive. It is primarily used for polishing rust, paint, and other imperfections on metal workpieces, and can also be used for polishing non-metallic materials such as bone products. Abrasive cloth grinding is favored by users due to its high processing efficiency, wide range of applications, strong adaptability, low operating costs, and safe and convenient operation. Abroad, abrasive cloth grinding technology has made significant progress, and its processing objects and application areas are becoming increasingly broad, making it an important means of obtaining significant economic benefits.

[0003] Applying adhesive to abrasive cloth is a crucial step in its manufacturing process. One side of the cloth needs to have its performance parameters, brand name, and other information printed on it, while the other side is coated with adhesive to allow abrasive particles or grit to adhere to the base plate. Referring to Chinese utility model patent CN207914030U, which discloses a device for evenly applying adhesive to abrasive cloth, the key technical feature of this patent is the sequential arrangement of an adhesive roller and a pair of rollers above the adhesive tank. A guide roller is positioned to the upper left of the pair of rollers, and an evenly applying roller is placed between the pair of rollers and the guide roller. A scraper is mounted on the evenly applying roller to remove the adhesive layer, ensuring even application.

[0004] Regarding the aforementioned related technologies, the inventors discovered that when abrasive cloth enters between the coating roller and the counter roller for coating and conveying, the adhesive on the coating roller may seep upwards onto the counter roller as the coating roller and the counter roller rotate. This upward-seeping adhesive then flows onto the rotating roller, causing the other side of the abrasive cloth to also become covered with adhesive. This makes the abrasive cloth prone to sticking during subsequent processing, thus affecting the subsequent processing of the abrasive cloth. Summary of the Invention

[0005] In view of this, the present invention provides a sandpaper coating device, which reduces the probability of adhesive seeping upwards and affecting the other side of the sandpaper, and improves work efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides a sandpaper adhesive coating device, comprising: a frame, erected on a horizontal surface; an adhesive tank, disposed at the bottom of the frame, the adhesive tank storing adhesive; an adhesive coating roller, rotatably connected to the frame, capable of adhering the adhesive in the adhesive tank to the surface of the adhesive coating roller when the adhesive coating roller rotates; a rotating roller, rotatably connected to the frame, with a sliding cylinder sleeved at each end of the rotating roller; two rotating cylinders disposed on the rotating roller, each sliding cylinder abutting against one of the rotating cylinders at its end away from the frame, the rotating cylinders rotating together with the rotating roller, the side walls of the two rotating cylinders approaching each other being set as inclined planes, the sandpaper contacting the inclined planes of the two rotating cylinders simultaneously during conveying; and two scrapers disposed above the adhesive tank, each scraper disposed at the inclined plane of one of the rotating cylinders, capable of scraping the adhesive on the inclined plane of the rotating cylinder when the rotating cylinder rotates, and conveying the scraped adhesive to the adhesive tank.

[0007] By adopting the above technical solution, when applying adhesive to abrasive cloth, the cloth is first fed between the adhesive applicator roller and the rotating roller. The adhesive applicator roller, by rotating, adheres the adhesive from the adhesive trough to its surface. The rotating roller and the adhesive applicator roller rotate together to feed the abrasive cloth forward, and the adhesive is applied to one side of the abrasive cloth by the adhesive applicator roller. During the feeding of the abrasive cloth, uneven winding during feeding may cause the abrasive cloth to shift during its transport between the adhesive applicator roller and the rotating roller, potentially causing wrinkles and affecting the adhesive application. The inclined plane design, due to the uneven force on both sides of the abrasive cloth when one side contacts the inclined plane, allows the abrasive cloth to move towards the center and finally return to the center position, which is beneficial for adhesive application. The inclined plane design also ensures that when the adhesive on the adhesive applicator roller seeps upwards, the adhesive seeping upwards needs to be adjusted according to the inclined plane. The adhesive flows a certain length along the inclined plane before entering the rotating roller, thus increasing the length of the adhesive flow to the rotating roller. Then, the scraper can scrape off the adhesive on the inclined plane of the rotating drum, thereby reducing the probability of the adhesive affecting the other side of the sandpaper, which is beneficial for the subsequent processing of the sandpaper. The scraper is designed so that when the rotating drum rotates, the scraper can clean up the adhesive that has seeped upwards from the coating roller, thus promptly cleaning up the adhesive that has seeped upwards from the coating roller, reducing the probability of the adhesive that has seeped upwards from the coating roller affecting the other side of the sandpaper, and facilitating the subsequent processing of the sandpaper.

[0008] The inclined plane design increases the length of the adhesive that flows upward from the coating roller to the rotating roller, thus increasing the time it takes for the adhesive to reach the rotating roller. This facilitates the cleaning of the adhesive that has seeped upward from the coating roller. The adhesive on the inclined plane of the rotating drum is then scraped off by a scraper, reducing the probability that the adhesive seeping upward from the coating roller will affect the subsequent processing of the sandpaper. The scraper also allows the adhesive flowing on the inclined plane to be cleaned as the rotating drum rotates, accelerating the cleaning speed of the adhesive that has seeped upward from the coating roller. This reduces the impact of the adhesive on the other side of the sandpaper, which is beneficial for subsequent processing of the sandpaper.

[0009] Preferably, the frame is equipped with multiple linear drives, the output shaft of each linear drive is fixedly connected to a slide plate that is fixedly connected to the sliding cylinder, the slide plate has a through hole for conveying the glue scraped by the scraper to the glue tank, and the scraper is fixedly connected to the side of the slide plate near the inclined plane. The rotating cylinder has a groove, and a fastening bolt is provided in the groove to fix the rotating cylinder and the rotating roller together.

[0010] By adopting the above technical solution, when it is necessary to adjust the distance between the inclined planes of the two rotating cylinders, the linear drive is first activated. The output shaft of the linear drive can drive the slide plate to move. The slide plate is fixedly connected to the sliding cylinder, thus driving the sliding cylinder to move. Since the sliding cylinder and the rotating cylinder are in contact, the sliding cylinder can finally push the rotating cylinder to move. When applying glue to sandpaper of different widths, the position of the sliding cylinder and the rotating cylinder can be adjusted by the linear drive, and then the distance between the inclined planes of the two rotating cylinders can be changed. This makes it easy to apply glue to sandpaper of different widths, which is beneficial to improving work efficiency. Since the scraper is in contact with the inclined plane of the rotating cylinder, the scraper is set so that when the linear actuator drives the sliding cylinder to move, the scraper is pressed against the inclined plane of the rotating cylinder, thus driving the rotating cylinder to move. This makes it easy to adjust the rotating cylinder and reduces the labor intensity of the workers.

[0011] The linear drive allows adjustment of the distance between the inclined planes of the two rotating cylinders based on the width of the abrasive cloth. This enables the device to better adapt to abrasive cloths of different widths for adhesive application, thereby improving work efficiency. Simultaneously, the scraper, when the distance between the two sliding cylinders is increased, presses against the inclined plane of the rotating cylinder, thus driving the rotating cylinder to move. Therefore, adjusting the distance between the inclined planes of the two rotating cylinders not only reduces the distance by pushing the rotating cylinder with the sliding cylinder but also increases the distance by moving the rotating cylinder with the scraper, thereby improving work efficiency and reducing worker workload.

[0012] Preferably, a scraper is fixedly connected to the lower surface of the slide plate. The scraper abuts against the outer wall of the coating roller, and the scraper can scrape the glue on the contact surface between the coating roller and the scraper when the coating roller rotates, and transport the scraped glue to the glue tank.

[0013] By adopting the above technical solution, when it is necessary to clean excess glue on the coating roller, since the width of the sandpaper is smaller than the width of the coating roller, the glue at both ends of the coating roller cannot be applied to the sandpaper and may even seep upwards, affecting the other side of the sandpaper. Therefore, when the coating roller rotates, the scraper can scrape off the glue on the surface of the coating roller in contact with the scraper, and the glue scraped off by the scraper falls into the glue groove, improving the utilization rate of the glue and reducing the amount of glue seeping upwards from the coating roller, thereby reducing the probability of glue seeping upwards from the coating roller. Since the width of the scraper and the slide plate are the same, the glue on the coating roller seeps upwards onto the inclined plane of the rotating drum. Therefore, cleaning the glue on the inclined plane of the rotating drum can reduce the impact of the glue seeping upwards from the coating roller on the other side of the sandpaper. Thus, the scraper is beneficial to reducing the amount of glue seeping upwards from the coating roller, improving the utilization rate of the glue, and reducing the impact of the glue seeping upwards from the coating roller on the other side of the sandpaper.

[0014] Preferably, a baffle fixedly connected to the frame is provided between the glue-applying roller and the sandpaper, which can block glue splashing on the glue-applying roller when the glue-applying roller rotates.

[0015] By adopting the above technical solution, when it is necessary to reduce the probability of glue on the glue roller splashing onto the sandpaper surface when the glue roller rotates, the glue on the glue roller may splash onto the sandpaper when it rotates, resulting in uneven glue application on the sandpaper and affecting subsequent processing of the sandpaper. The baffle can block the glue when it splashes upward from the glue roller, which is conducive to the uniform application of glue to the sandpaper and facilitates subsequent processing of the sandpaper.

[0016] Preferably, the scraper is inclined and the end of the scraper away from the rotating cylinder is higher than the end of the scraper near the rotating cylinder. The scraper abuts against the inclined plane of the rotating cylinder, and a guide groove is provided on the top of the scraper for conveying the glue scraped by the scraper.

[0017] By adopting the above technical solution, when it is necessary to convey the adhesive scraped by the scraper, the inclined setting of the scraper is beneficial because when the scraper scrapes the adhesive on the inclined plane of the rotating drum, the adhesive can fall better due to its own gravity, which is conducive to the conveying of the adhesive scraped by the scraper and thus facilitates the processing of the adhesive scraped by the scraper. The setting of the guide groove can guide the adhesive scraped by the scraper, so that when the scraper scrapes the adhesive on the inclined plane of the rotating drum, the adhesive falls from the guide groove into the through hole, and finally the adhesive scraped by the scraper is conveyed into the adhesive tank. The inclined setting of the scraper and the setting of the guide groove are conducive to the conveying of the adhesive scraped by the scraper, which is conducive to the recycling of adhesive and reduces the impact of adhesive seeping upward from the coating roller on the other side of the sandpaper, which is convenient for the subsequent processing of the sandpaper.

[0018] Preferably, a reinforcing blade is fixedly connected to the top of the scraper, and the reinforcing blade abuts against the rotating roller.

[0019] By adopting the above technical solution, when it is necessary to strengthen the role of the scraper, the reinforcement blade, which is fixedly connected to the scraper, can clean up the glue that flows into the rotating roller in a small amount due to untimely cleaning on the inclined plane of the rotating drum. This allows for better cleaning of the glue that seeps upwards from the coating roller. Furthermore, the contact between the reinforcement blade and the rotating roller strengthens the force between the scraper and the rotating drum when the scraper drives the rotating drum to move, thus enabling the rotating drum to move more smoothly and facilitating the glue coating process, thereby improving work efficiency.

[0020] Preferably, the reinforcing blade is inclined and the end of the reinforcing blade away from the scraper is higher than the end of the reinforcing blade near the scraper.

[0021] By adopting the above technical solution, the inclined setting of the reinforcing knife is conducive to conveying the glue that may flow onto the rotating roller, thereby facilitating the cleaning of the glue and reducing the impact of the glue on the inclined plane of the rotating cylinder on the rotating roller, which is beneficial to the subsequent processing of the abrasive cloth.

[0022] Preferably, a heating plate is fixedly connected to the top of the frame to heat the sandpaper that has been coated with adhesive.

[0023] By adopting the above technical solution, when it is necessary to heat the coated sandpaper, a heating plate is set on the frame to heat the coated sandpaper. Since this type of adhesive is relatively slow to dry, heating the adhesive can further and effectively cure it, thereby achieving a good bonding strength and reducing the drying speed of the adhesive, thus further improving the overall stability of production.

[0024] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0025] 1. The inclined plane design increases the length of the adhesive flowing from the coating roller to the rotating roller, thus increasing the time it takes for the adhesive to reach the rotating roller. This facilitates the cleaning of the adhesive from the coating roller. The adhesive on the inclined plane of the rotating drum is then scraped off by a scraper, reducing the probability of the adhesive from the coating roller affecting the subsequent processing of the sandpaper. The scraper, when the rotating drum rotates, comes into contact with the inclined plane to clean the adhesive flowing on the inclined plane, thereby accelerating the cleaning speed of the adhesive from the coating roller and reducing the impact of the adhesive on the other side of the sandpaper, which is beneficial for the subsequent processing of the sandpaper.

[0026] 2. The linear drive allows adjustment of the distance between the inclined planes of the two rotating drums based on the width of the abrasive cloth. This enables the device to better adapt to abrasive cloths of different widths for adhesive application, thereby improving work efficiency. Simultaneously, the scraper mechanism ensures that when the distance between the two sliding drums is increased, the scraper presses against the inclined plane of the rotating drum. When the sliding plate moves, it drives the rotating drum to move. Therefore, adjusting the distance between the inclined planes of the two rotating drums not only reduces the distance by pushing the rotating drum with the sliding drum but also increases the distance by moving the rotating drum with the scraper. This improves work efficiency and reduces worker workload.

[0027] 3. The scraper design allows for the scraping of adhesive from the surface of the coating roller that contacts the scraper, with the scraped adhesive falling into the adhesive trough. This improves adhesive utilization and reduces the amount of adhesive seeping upwards from the coating roller, thus lowering the probability of adhesive seeping upwards from the coating roller. Since the scraper and the slide plate have the same width, the adhesive on the coating roller seeps upwards onto the inclined plane of the rotating drum. Therefore, cleaning the adhesive on the inclined plane of the rotating drum reduces the impact of the adhesive seeping upwards from the coating roller on the other side of the sandpaper. Thus, the scraper design helps reduce the amount of adhesive seeping upwards from the coating roller, improving adhesive utilization while reducing the impact of the adhesive seeping upwards from the coating roller on the other side of the sandpaper.

[0028] 4. The baffle is designed to block the glue from splashing upwards on the glue roller, which helps to ensure even glue application on the sandpaper and facilitates subsequent processing of the sandpaper. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0030] Figure 2 Examples of this application Figure 1 A magnified view of a portion of region A in the middle;

[0031] Figure 3This is a schematic diagram illustrating the structure of the dispensing tube and heating plate in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Heating plate; 12. Guide roller; 2. Glue tank; 21. Glue injection pipe; 3. Glue coating roller; 4. Rotating roller; 41. Sliding cylinder; 42. Rotating cylinder; 421. Groove; 422. Fastening bolt; 5. Scraper; 51. Guide groove; 52. Reinforcing blade; 6. Linear actuator; 61. Slide plate; 611. Through hole; 612. Scraper; 62. Push rod; 7. Baffle. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-3 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0034] Reference Figure 1 and Figure 2 A sandpaper adhesive application device includes a frame 1 erected on a horizontal plane and an adhesive tank 2 located at the bottom of the frame 1. The adhesive tank 2 stores adhesive. An adhesive application roller 3 is rotatably connected to the frame 1, and when the adhesive application roller 3 rotates, it can adhere the adhesive in the adhesive tank 2 to the surface of the adhesive application roller 3. A rotating roller 4 rotatably connected to the frame 1 is located above the adhesive application roller 3. A sliding cylinder 41 is sleeved at each end of the rotating roller 4. Each sliding cylinder 41 abuts against a rotating cylinder 42 located on the rotating roller 4 at the end away from the frame 1. The rotating cylinder 42 can rotate with the rotating roller 4. The side walls of the two rotating cylinders 42 that are close to each other are set as inclined planes. The sandpaper contacts the inclined planes of the two rotating cylinders 42 during the conveying process. Two scrapers 5 are located above the adhesive tank 2. Each scraper 5 is located at the inclined plane of one of the rotating cylinders 42 and can scrape the adhesive on the inclined plane of the rotating cylinder 42 when the rotating cylinder 42 rotates, and convey the scraped adhesive to the adhesive tank 2. The adhesive used in the production of abrasive cloth is mainly phenolic resin, and heating the phenolic resin can accelerate its curing.

[0035] When applying adhesive to abrasive cloth, the cloth is first fed between the adhesive applicator roller 3 and the rotating roller 4. The adhesive applicator roller 3 rotates to apply the adhesive from the adhesive trough 2 onto its surface. The rotating roller 4 rotates together with the adhesive applicator roller 3 to feed the abrasive cloth forward, and the adhesive is applied to one side of the abrasive cloth by the adhesive applicator roller 3. When the abrasive cloth is being fed, uneven winding during feeding may cause the abrasive cloth to shift during the process of being fed between the rotating roller 4 and the adhesive applicator roller 3, resulting in wrinkles and affecting the application of adhesive. The inclined plane of the rotating cylinder 42 ensures that one side of the abrasive cloth contacts the rotating cylinder 42. The uneven force on both sides of the abrasive cloth when the plane is tilted causes it to move towards the center. Finally, the abrasive cloth moves to the center position and continues to be conveyed. The tilted plane of the rotating drum 42 also causes the glue on the coating roller 3 to flow a certain length on the tilted plane of the rotating drum 42 before entering the rotating roller 4 when it seeps upward. This increases the length of the upward-seeping glue that flows to the rotating roller 4, thereby reducing the probability of the glue affecting the other side of the abrasive cloth. The scraper 5 is set so that when the rotating drum 42 rotates, the scraper 5 cleans the glue that seeps upward from the coating roller 3, thereby improving the cleaning effect on the other side of the abrasive cloth and facilitating subsequent work.

[0036] Reference Figure 2 The top of the scraper 5 is provided with a guide groove 51 and a reinforcing blade 52 is fixedly connected to the top of the scraper 5.

[0037] Both the scraper 5 and the reinforcing blade 52 are inclined, with the end of the scraper 5 closer to the rotating cylinder 42 lower than the end of the scraper 5 further away from the rotating cylinder 42, and the end of the reinforcing blade 52 closer to the scraper 5 lower than the end of the reinforcing blade 52 further away from the scraper 5. The scraper 5 abuts against the inclined plane of the rotating cylinder 42, and the reinforcing blade 52 abuts against the surface of the rotating roller 4.

[0038] When it is necessary to convey the adhesive on the inclined plane of the rotating drum 42, the inclined setting of the scraper 5 and the setting of the guide groove 51 are conducive to conveying the adhesive scraped by the scraper 5, which is conducive to the recycling of adhesive and reduces the impact of the adhesive seeping upward from the coating roller 3 on the other side of the sandpaper, which is convenient for subsequent processing of the sandpaper. By setting the reinforcing blade 52, when a small amount of adhesive on the inclined plane of the rotating drum 42 flows into the rotating roller 4 due to untimely cleaning, the reinforcing blade 52 can clean the adhesive, which can better clean the adhesive seeping upward from the coating roller 3. Moreover, the contact between the reinforcing blade 52 and the rotating roller 4 can strengthen the force between the scraper 5 and the rotating drum 42 when the scraper 5 drives the rotating drum 42 to move. The reinforcing blade 52 and the scraper 5 can drive the rotating drum 42 to move together, which is conducive to the adhesive application of the sandpaper, thereby improving work efficiency.

[0039] Reference Figure 1 and Figure 3Two linear actuators 6 are fixedly installed on the frame 1. Each linear actuator 6 has a push rod 62 fixedly connected to its output shaft. A slide plate 61 is fixedly connected to the end of the push rod 62 away from the output shaft of the linear actuator 6. The top of the slide plate 61 has a through hole 611 for the glue conveying material scraped by the scraper 5. A scraper 612 is fixedly connected to the lower surface of the slide plate 61. The scraper 612 abuts against the surface of the coating roller 3. When the coating roller 3 rotates, the scraper 612 scrapes the glue on the contact surface between the scraper 612 and the coating roller 3 and conveys the glue to the glue tank 2. The side wall of the rotating cylinder 42 has... The machine is provided with a groove 421, in which fastening bolts 422 are installed to fix the rotating cylinder 42 and the rotating roller 4 together. A baffle 7 is fixedly connected to the frame 1, and the baffle 7 is located between the sandpaper and the glue-applying roller 3. It can block the glue splashed from the glue-applying roller 3 when the glue-applying roller 3 rotates. A heating plate 11 is fixedly connected to the top of the frame 1 to heat the sandpaper after glue application. A glue-injection pipe 21 for conveying glue to the glue tank 2 is fixedly connected inside the glue tank 2. A guide roller 12 is rotatably connected to the top of the frame 1 to guide and convey the glue-applying sandpaper.

[0040] When adjusting the distance between the inclined planes of the two rotating cylinders 42, first loosen the fastening bolts 422 on the rotating cylinders 42 and the rotating rollers 4. Then, start the linear actuator 6. The output shaft of the linear actuator 6 drives the push rod 62, which in turn moves the slide plate 61. The slide plate 61 moves the sliding cylinder 41, which then abuts against the rotating cylinder 42, thus pushing the rotating cylinder 42 to move. After adjustment, tighten the fastening bolts 422 to abut the rotating rollers 4 and the rotating cylinders 42 to facilitate subsequent processing of the abrasive cloth. The through hole 611 facilitates the conveying of the scraped adhesive from the scraper 5 to the adhesive tank 2. When the coating roller 3 rotates, the scraper 612 can scrape the adhesive from the surface of the coating roller 3 that is in contact with the scraper 612. The heating plate 11 can heat the coated sandpaper, thereby accelerating the drying speed of the adhesive and facilitating subsequent work. The guide roller 12 at the top of the frame 1 guides and conveys the coated sandpaper to facilitate subsequent work and improve work efficiency.

[0041] The implementation principle of the abrasive cloth coating device in this embodiment is as follows: First, loosen the fastening bolt 422. Based on the width of the abrasive cloth, start the linear drive 6 to move or pull the sliding cylinder 41 and rotating cylinder 42, and move the rotating cylinder 42 via the scraper 5. After adjustment, tighten the fastening bolt 422 against the rotating roller 4. The rotating roller 4 and the coating roller 3 rotate together. The abrasive cloth is conveyed between the rotating roller 4 and the coating roller 3, and one side of the abrasive cloth is coated with adhesive via the coating roller 3. The baffle 7 blocks the adhesive splashing out when the coating roller 3 rotates. The scraper 612 under the slide plate 61 scrapes off excess glue from the glue application roller 3, reducing the amount of glue that seeps upward. When the glue on the surface of the glue application roller 3 seeps upward onto the inclined plane of the rotating cylinder 42, the scraper 5 and the reinforcing blade 52 scrape off the glue on the inclined plane of the rotating cylinder 42 as the rotating cylinder 42 rotates. Then, the scraped glue is transported to the through hole 611 on the slide plate 61 through the guide groove 51 on the scraper 5. Next, the glue is transported into the glue tank 2. Then, the sandpaper is transported upward and heated by the heating plate 11. Finally, the sandpaper is transported out through the guide roller 12.

[0042] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A sandpaper adhesive coating device, characterized in that, include: The frame (1) is erected on a horizontal surface; A glue tank (2) is provided at the bottom of the frame (1), and the glue tank (2) stores glue. The glue-applying roller (3) is rotatably connected to the frame (1) and can adhere the glue in the glue tank (2) to the surface of the glue-applying roller (3) when the glue-applying roller (3) rotates. A rotating roller (4) is rotatably connected to the frame (1), and a sliding cylinder (41) is respectively fitted at both ends of the rotating roller (4); Rotating cylinders (42) are provided on the rotating roller (4) and there are two of them. Each sliding cylinder (41) abuts against one of the rotating cylinders (42) at the end away from the frame (1). The rotating cylinders (42) can rotate together with the rotating roller (4). The side walls of the two rotating cylinders (42) that are close to each other are set as inclined planes. The sand cloth contacts the inclined planes of the two rotating cylinders (42) at the same time during the conveying process. Two scrapers (5) are provided above the glue tank (2), and each scraper (5) is provided at the inclined plane of the rotating cylinder (42). When the rotating cylinder (42) rotates, it can scrape the glue on the inclined plane of the rotating cylinder (42) and transport the scraped glue to the glue tank (2).

2. The abrasive cloth coating equipment as described in claim 1, characterized in that: Multiple linear drivers (6) are installed on the frame (1). The output shaft of the linear driver (6) is fixedly connected to a slide plate (61) which is fixedly connected to the sliding cylinder (41). The slide plate (61) has a through hole (611) for conveying the glue scraped by the scraper (5) to the glue tank (2). The scraper (5) is fixedly connected to the slide plate (61) on the side near the inclined plane of the rotating cylinder (42). The rotating cylinder (42) has a groove (421). The groove (421) is provided with a fastening bolt (422) that can fix the rotating cylinder (42) and the rotating roller (4) together.

3. The abrasive cloth coating equipment as described in claim 2, characterized in that: A scraper (612) is fixedly connected to the lower surface of the slide plate (61). The scraper (612) abuts against the outer wall of the glue coating roller (3), and the scraper (612) can scrape the glue on the contact surface between the glue coating roller (3) and the scraper (612) when the glue coating roller (3) rotates, and transport the scraped glue to the glue tank (2).

4. The abrasive cloth coating equipment as described in claim 1, characterized in that: A baffle (7) fixedly connected to the frame (1) is provided between the glue-applying roller (3) and the abrasive cloth, which can block the glue splashed on the glue-applying roller (3) when the glue-applying roller (3) rotates.

5. The abrasive cloth coating equipment as described in claim 1, characterized in that: The scraper (5) is inclined and the end of the scraper (5) away from the rotating cylinder (42) is higher than the end of the scraper (5) close to the rotating cylinder (42). The scraper (5) abuts against the inclined plane of the rotating cylinder (42). The top of the scraper (5) is provided with a guide groove (51) for conveying the glue scraped by the scraper (5).

6. The abrasive cloth coating equipment as described in claim 5, characterized in that: The top of the scraper (5) is fixedly connected to a reinforcing blade (52), and the reinforcing blade (52) abuts against the side wall of the rotating roller (4).

7. The abrasive cloth coating equipment as described in claim 6, characterized in that: The reinforcing blade (52) is inclined, and the end of the reinforcing blade (52) away from the scraper (5) is higher than the end of the reinforcing blade (52) close to the scraper (5).

8. The abrasive cloth coating equipment as described in claim 1, characterized in that: The frame (1) is fixedly connected to a heating plate (11) that can heat the sandpaper that has been coated with adhesive.

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