Gluing machine glue roller self-cleaning device

Abstract

This application relates to the field of adhesive coating equipment technology and discloses a self-cleaning device for the scraper roller of an adhesive coating machine. The device includes two support plates, a scraper structure, a spraying device, and a collecting device. An adhesive coating roller is rotatably mounted between the two support plates. The scraper structure includes two fixed blocks respectively fixedly connected to the support plates. A cylinder is fixedly connected to one side of each of the two fixed blocks via a mounting block. A connecting block is fixedly mounted on the upper end of each of the two cylinders. A fixed plate is fixedly connected between the two connecting blocks. Multiple fixed columns are fixedly mounted on the upper end of the fixed plate. A spring and a connecting head are slidably fitted on one side of the outer wall of each of the multiple fixed columns. A scraper is threadedly connected to the upper end of each of the multiple connecting heads via fixing bolts threaded into both ends. This device cleans the adhesive coating roller by lifting the scraper with the cylinders to contact it, while also incorporating an elastic component. This ensures that the scraper always maintains elastic contact with the adhesive coating roller, guaranteeing cleaning effectiveness while avoiding wear on the roller due to hard contact, thus protecting its precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of glue coating equipment, and in particular relates to a self-cleaning device for the glue scraper roller of a glue coating machine. Background Technology

[0002] After prolonged use, some glue will adhere to the outside of the existing coating rollers due to the low solidification point of the glue. If not cleaned in time, it will affect the uniformity of the glue application. However, the current treatment method is mainly manual, which is slow and not very clean. Some glue has a high hardness after solidification, and it is difficult to remove if it is not heated and melted before treatment.

[0003] An existing patent (publication number: CN220941491U) discloses a glue-applying roller, including a base plate. Support plates are longitudinally fixed at both ends of the upper sidewall of the base plate. A U-shaped plate is fixedly fixed on the side of the two support plates that are close to each other. Support rods are fixedly fixed on the upper sidewall of the two support plates. A glue-holding groove is fixedly fixed at the upper end of the two support rods. A connecting pipe is fixedly fixed on the lower sidewall of the glue-holding groove to facilitate the application of glue to the upper end of the cardboard after a long period of time by the roller.

[0004] The aforementioned comparative document points out that if a large amount of glue adheres to the outside of the roller and solidifies, it can be effectively removed by heating with an electric heating wire and by moving the scraper and scraper plate to contact the outer wall of the roller through a moving mechanism. With the transmission mechanism driving the roller to rotate, the solidified glue adhering to the outside can be removed. This is not only faster than manual cleaning, but also cleaner. However, the scraper in the above structure uses rigid contact, which can easily cause wear on the roller surface with long-term use, resulting in a decrease in scraping accuracy. Therefore, a self-cleaning device for the scraper roller of the glue applicator is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a self-cleaning device for the glue applicator's scraper roller, which has advantages such as non-wearing during application and protection of roller surface accuracy. This solves the problem pointed out in the aforementioned comparative documents that the scraper blade of the above structure uses rigid contact, which is prone to wear on the roller surface after long-term use, leading to a decrease in scraping accuracy.

[0006] To achieve the above objectives, this application provides the following technical solution: a self-cleaning device for the glue-applying machine's scraper roller, comprising two support plates, a scraper structure, a spraying device, and a collecting device. A glue-applying roller is rotatably arranged between the two support plates. The scraper structure includes two fixing blocks that are respectively fixedly connected to the support plates. A cylinder is fixedly connected to one side of each of the two fixing blocks via an mounting block. A connecting block is fixedly arranged at the upper end of each of the two cylinders. A fixing plate is fixedly connected between the two connecting blocks.

[0007] Multiple fixing posts are fixedly installed on the upper end of the fixing plate. Each fixing post has a spring and a connector slidably sleeved on one side of its outer wall. Each connector has a scraper threadedly connected to its upper end by fixing bolts installed inside both ends. An adjustment groove is opened through the interior of both support plates. The connecting posts at both ends of the fixing plate pass through the adjustment groove and are fixedly connected to the connecting block.

[0008] The above solution, by setting up an elastic component, involves lifting the scraper blade using a cylinder during the cleaning of the coating roller. During the lifting process, the scraper blade contacts the coating roller to clean it. If the lifting is too high, the elastic component will compress the spring upon contact, causing the scraper blade to descend. This design ensures that the scraper blade adheres to the surface without wear, thus protecting the precision of the coating roller.

[0009] Furthermore, guide plates are fixedly installed on both sides of the scraper, the scraper blade is arc-shaped, and the scraper is made of polyurethane elastic material.

[0010] The above solution protects the other structures of the scraper assembly by setting up a guide plate, and guides the dissolving liquid and scraped glue to fall accurately into the collection device. At the same time, the use of special materials and the modification of the blade further reduce the damage of the scraper to the coating roller.

[0011] Furthermore, each of the multiple connectors is provided with a limiting bolt inside, and one end of each of the multiple limiting bolts extending out of the connector is threadedly connected to the inside of the fixing column.

[0012] The above solution uses a limiting bolt to restrict the connector, ensuring it remains stably outside the fixed column without detaching, thus guaranteeing the elasticity of the scraper structure.

[0013] Furthermore, the spraying device includes a pump body, a solvent tank is fixedly connected to one side of the pump body via a connecting pipe, a main flow pipe is fixedly installed at the end of the pump body away from the solvent tank, a branch pipe is fixedly connected to the end of the main flow pipe away from the pump body, and a plurality of fan-shaped nozzles are fixedly installed on one side of the branch pipe.

[0014] The above solution involves setting up a spraying device to spray a dissolving liquid when the scraper cleans the coating roller, thus dissolving the adhesive residue in advance and facilitating subsequent cleaning by the scraper.

[0015] Furthermore, a solenoid valve is fixedly connected between the main pipes.

[0016] The above solution, by setting a solenoid valve, can control the spraying of the spraying device. This setting enables automatic cleaning. After working for a period of time, the glue application is stopped and the glue scraper roller is cleaned, achieving the effect of automatic cleaning.

[0017] Furthermore, the collection device includes a collection box, inside which a mesh plate is suspended by two hooks, and a sponge block is attached to the upper end of the mesh plate.

[0018] The above method allows the collection device to collect the dissolving liquid and adhesive residue sprayed from the cleaning coating roller. The dissolving liquid that falls on the sponge block is absorbed into the collection box, while the adhesive residue remains on the upper part of the sponge block.

[0019] Furthermore, a controller is fixedly installed on one side of one of the support plates, and the controller is electrically connected to the solenoid valve in the spraying device.

[0020] The above scheme uses a controller to control the opening and closing of the solenoid valve.

[0021] Furthermore, a scraper and a collecting device are respectively provided directly below the coating roller, and a fan-shaped nozzle from a spraying device is provided on one side of the coating roller.

[0022] The above method involves spraying the dissolving liquid onto the outer wall of the coating roller through a nozzle to dissolve the adhesive residue, followed by scraping the adhesive off the coating roller using a scraper device.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects: Cleaning is achieved by a pneumatic cylinder lifting a scraper to contact the coating roller, while an elastic component is incorporated. When the cylinder lifts too high, the scraper is compressed by the reaction force of the coating roller, causing the spring to descend and ensuring the scraper remains in elastic contact with the coating roller. This ensures effective cleaning while preventing wear on the coating roller due to hard contact, protecting its precision. A spraying device sprays a dissolving solution before scraper cleaning, pre-treating the adhesive residue and reducing its adhesion to the coating roller, making subsequent scraper cleaning easier and more thorough, thus improving overall cleaning efficiency. The scraper is made of polyurethane elastic material with a rounded blade. Polyurethane material has good elasticity and wear resistance, and the rounded blade reduces contact stress with the coating roller, further reducing damage to the roller surface and extending its service life. In the collection device, a grid plate is suspended in the collection box via hooks, and sponge blocks are placed on the grid plate. When the dissolving solution and adhesive residue fall onto the sponge blocks, the dissolving solution is absorbed by the sponge and seeps into the collection box, while the adhesive residue remains on the upper part of the sponge blocks. This design achieves initial separation of the solvent and adhesive residue, facilitating subsequent recycling of the solvent in the collection box or replacement of the sponge block to clean the adhesive residue. It is convenient to maintain and environmentally friendly. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the self-cleaning device for the glue scraper roller of the glue applicator of this utility model; Figure 2 This is a structural diagram of the scraper device of the self-cleaning device for the glue-coating machine scraper roller of this utility model; Figure 3 This is an exploded view of the elastic component of the scraper device in the self-cleaning device for the glue-coating machine scraper roller of this utility model; Figure 4 This is a top view of the spraying device of the self-cleaning device for the glue scraper roller of the glue applicator of this utility model; Figure 5 This is a schematic diagram of the collection device structure of the self-cleaning device for the glue scraper roller of the glue applicator of this utility model.

[0025] Explanation of markings in the diagram: 1. Support plate; 2. Glue roller; 3. Adjustment groove; 4. Scraper structure; 401. Fixing block; 402. Mounting block; 403. Cylinder; 404. Connecting block; 405. Fixing plate; 406. Fixing column; 407. Spring; 408. Connector; 409. Limit bolt; 410. Fixing bolt; 411. Scraper; 412. Guide plate; 5. Spraying device; 501. Pump body; 502. Connecting pipe; 503. Solvent tank; 504. Main pipe; 505. Solenoid valve; 506. Diverter pipe; 507. Fan-shaped nozzle; 6. Collection device; 601. Collection box; 602. Hook; 603. Mesh plate; 604. Sponge block; 7. Controller. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Please see Figure 1 and Figure 2 The self-cleaning device for the glue applicator roller in this embodiment includes two support plates 1, a scraper structure 4, a spraying device 5, and a collecting device 6. A glue applicator roller 2 is rotatably arranged between the two support plates 1. The scraper structure 4 includes two fixing blocks 401 that are respectively fixedly connected to the support plates 1. A cylinder 403 is fixedly connected to one side of each of the two fixing blocks 401 through a mounting block 402. A connecting block 404 is fixedly arranged at the upper end of each of the two cylinders 403. A fixing plate 405 is fixedly connected between the two connecting blocks 404.

[0028] Please see Figure 1 , Figure 2 and Figure 3Multiple fixing posts 406 are fixedly installed on the upper end of the fixing plate 405. A spring 407 and a connector 408 are slidably sleeved on one side of the outer wall of each fixing post 406. A scraper 411 is threadedly connected to the upper end of each connector 408 through fixing bolts 410 set inside both ends. An adjustment groove 3 is opened through the interior of each of the two support plates 1. The connecting posts at both ends of the fixing plate 405 pass through the adjustment groove 3 and are fixedly connected to the connecting block 404.

[0029] Please see Figure 1 and Figure 3 Both sides of the scraper 411 are fixedly provided with guide plates 412. The blade of the scraper 411 is arc-shaped and made of polyurethane elastic material. Multiple connectors 408 are provided with limit bolts 409 inside. The ends of the multiple limit bolts 409 extending out of the connectors 408 are threadedly connected to the inside of the fixing column 406.

[0030] Please see Figure 1 and Figure 4 The spraying device 5 includes a pump body 501. A solvent tank 503 is fixedly connected to one side of the pump body 501 via a connecting pipe 502. A main flow pipe 504 is fixedly installed at the end of the pump body 501 away from the solvent tank 503. A branch pipe 506 is fixedly connected to the end of the main flow pipe 504 away from the pump body 501. Multiple fan-shaped nozzles 507 are fixedly installed on one side of the branch pipe 506. Solenoid valves 505 are fixedly connected between the main flow pipes 504.

[0031] Please see Figure 1 , Figure 4 and Figure 5 The collection device 6 includes a collection box 601. Inside the collection box 601, a grid plate 603 is suspended by two hooks 602. A sponge block 604 is attached to the upper end of the grid plate 603. A controller 7 is fixedly mounted on one side of one of the support plates 1. The controller 7 is electrically connected to the solenoid valve 505 in the spraying device 5. A scraper 411 and the collection device 6 are respectively located directly below the glue roller 2. A fan-shaped nozzle 507 from the spraying device 5 is located on one side of the glue roller 2.

[0032] In this embodiment, the scraper 411 is lifted by the cylinder 403 to contact the coating roller 2 for cleaning, and an elastic component is provided. When the cylinder 403 is lifted too high, the scraper 411 is compressed by the reaction force of the coating roller 2 to lower the spring 407, so that the scraper 411 is always in elastic contact with the coating roller 2. This ensures the cleaning effect and avoids wear on the coating roller 2 due to hard contact, thus protecting its precision. The spraying device 5 sprays a dissolving liquid before the scraper 411 cleans, first dissolving the glue stains and reducing the adhesion between the glue stains and the coating roller 2, making the subsequent cleaning by the scraper 411 easier and more thorough, and improving the overall cleaning efficiency. The scraper 411 is made of polyurethane elastic material and the blade is arc-shaped. Polyurethane material possesses excellent elasticity and wear resistance. The arc-shaped blade reduces contact stress with the coating roller 2, further minimizing damage to its surface and extending its service life. In the collection device 6, a mesh plate 603 is suspended inside the collection box 601 via hooks 602, and a sponge block 604 is placed on the mesh plate 603. When the dissolving liquid and adhesive residue fall onto the sponge block 604, the dissolving liquid is absorbed by the sponge and permeates into the collection box 601, while the adhesive residue remains on the upper part of the sponge block 604. This design achieves initial separation of the dissolving liquid and adhesive residue, facilitating subsequent recycling of the dissolving liquid in the collection box 601 or replacement of the sponge block 604 to clean the adhesive residue. Maintenance is convenient and environmentally friendly.

[0033] The working principle of the above embodiments is as follows: When the coating roller 2 needs cleaning, the equipment automatically enters the cleaning mode. The controller 7 first activates the spray device 5. The pump 501 delivers the dissolving solution from the solvent tank 503 through the main pipe 504 to the branch pipe 506, and then evenly sprays it onto the surface of the coating roller 2 through the fan-shaped nozzles 507, pre-treating the adhesive residue by dissolving it. Subsequently, the cylinder 403 lifts the scraper 411 assembly to contact the coating roller 2, maintaining a close fit under the action of the elastic component. As the coating roller 2 rotates, the scraping operation is completed. The scraped adhesive residue mixes with the dissolving solution and is guided by the guide plate 412 into the collection device 6. Solid-liquid separation is achieved through the sponge block 604 and the grid plate 603, completing the cleaning cycle.

[0034] 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.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A self-cleaning device for the scraper roller of a glue applicator, comprising two support plates (1), a scraper structure (4), a spraying device (5), and a collecting device (6), characterized in that: A glue-applying roller (2) is rotatably arranged between the two support plates (1). The scraper structure (4) includes two fixing blocks (401) that are fixedly connected to the support plates (1) respectively. A cylinder (403) is fixedly connected to one side of each of the two fixing blocks (401) through a mounting block (402). A connecting block (404) is fixedly arranged at the upper end of each of the two cylinders (403). A fixing plate (405) is fixedly connected between the two connecting blocks (404). The upper end of the fixed plate (405) is fixedly provided with multiple fixed columns (406). Each of the multiple fixed columns (406) has a spring (407) and a connector (408) slidably sleeved on one side of its outer wall. Each of the multiple connectors (408) has a scraper (411) threadedly connected to its upper end by a fixing bolt (410) provided inside both ends. Each of the two support plates (1) has an adjustment groove (3) through it. The connecting columns at both ends of the fixed plate (405) pass through the adjustment groove (3) and are fixedly connected to the connecting block (404).

2. The self-cleaning device for the glue-applying machine scraper roller according to claim 1, characterized in that: Both sides of the scraper (411) are fixedly provided with guide plates (412), the blade of the scraper (411) is arc-shaped, and the scraper (411) is made of polyurethane elastic material.

3. The self-cleaning device for the glue-applying machine scraper roller according to claim 1, characterized in that: Each of the multiple connectors (408) is provided with a limiting bolt (409), and one end of each of the multiple limiting bolts (409) extending out of the connector (408) is threadedly connected to the inside of the fixing column (406).

4. The self-cleaning device for the glue applicator roller according to claim 1, characterized in that: The spraying device (5) includes a pump body (501), a solvent tank (503) is fixedly connected to one side of the pump body (501) via a connecting pipe (502), a main pipe (504) is fixedly installed at the end of the pump body (501) away from the solvent tank (503), a branch pipe (506) is fixedly connected to the end of the main pipe (504) away from the pump body (501), and a plurality of fan-shaped nozzles (507) are fixedly installed on one side of the branch pipe (506).

5. The self-cleaning device for the glue-applying machine scraper roller according to claim 4, characterized in that: A solenoid valve (505) is fixedly connected between the main pipes (504).

6. The self-cleaning device for the glue-applying machine scraper roller according to claim 1, characterized in that: The collection device (6) includes a collection box (601), inside which a grid plate (603) is suspended by two hooks (602), and a sponge block (604) is placed in contact with the upper end of the grid plate (603).

7. The self-cleaning device for the glue applicator roller according to claim 1, characterized in that: One of the support plates (1) is fixedly provided with a controller (7) on one side, and the controller (7) is electrically connected to the solenoid valve (505) in the spray device (5).

8. The self-cleaning device for the glue applicator roller according to claim 1, characterized in that: A scraper (411) and a collection device (6) are respectively provided directly below the coating roller (2), and a fan-shaped nozzle (507) of the spraying device (5) is provided on one side of the coating roller (2).

Images