Coating tool for abrasive paper production

Abstract

The utility model discloses a coating tool for abrasive paper production, and relates to the technical field of coating tools. The coating device comprises a coating box, a coating roller is arranged at the top of the coating box, and a driving mechanism is arranged on one side of the coating roller. The ultrasonic oscillator and the circulating system are integrated, the elimination efficiency of glue bubbles in the abrasive paper production process is remarkably improved, the ultrasonic oscillator breaks macroscopic bubbles in glue through high-frequency pressure waves, tiny bubbles are promoted to be combined and escaped, meanwhile, continuous stirring and temperature balance of the glue are achieved through cooperation of the circulating pipe and the conveying pump, and the production efficiency of the abrasive paper is improved. In addition, due to the temperature control function of the heating wire, it is ensured that glue is operated within the optimal viscosity range, bubble generation is further reduced, the problems that traditional standing defoaming efficiency is low, and high-viscosity glue bubbles are difficult to remove are solved through the multi-pipe design, and the production efficiency is improved. And the uniformity of the coating and the bonding strength of sand grains are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of coating tooling technology, and in particular relates to a coating tooling for sandpaper production. Background Technology

[0002] Sandpaper is an abrasive tool made by adhering abrasive particles to the surface of a substrate. It is widely used for grinding, polishing and deburring materials such as metal, wood and plastic. Sandpaper production mainly includes five stages: substrate treatment, adhesive coating, sanding, curing and post-treatment.

[0003] In sandpaper production, the adhesive coating process is a crucial step in determining the adhesion strength of the abrasive particles and the uniformity of the coating. However, existing adhesive coating technologies still have the following problems in practical applications: air is easily mixed into the adhesive during stirring, conveying, or coating, forming microbubbles. These bubbles remain in the coating, and after curing, they lead to a decrease in the bonding strength of the abrasive particles and a reduction in the durability of the sandpaper. Traditional methods (such as static degassing or mechanical stirring) are inefficient and difficult to meet the needs of continuous production. Furthermore, bubbles in high-viscosity adhesives (such as phenolic resins and epoxy adhesives) are even more difficult to escape naturally.

[0004] To address these issues, we provide a sandpaper coating production fixture. Utility Model Content

[0005] The purpose of this utility model is to provide a sandpaper production coating fixture. By combining the cover plate assembly and the bubble elimination assembly, it solves the problem that the bubble elimination method in the existing sandpaper production coating fixture is inefficient and cannot meet the needs of continuous production.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a coating fixture for sandpaper production, comprising a coating box, a coating roller on the top of the coating box, a driving mechanism on one side of the coating roller, a cover plate assembly on the top of the coating box, the cover plate assembly comprising a top plate fixedly connected to the top of the coating box, a hydraulic cylinder fixedly connected inside the top plate, and a scraper fixedly connected to the output end of the hydraulic cylinder, and an air bubble elimination assembly disposed inside the coating box, the air bubble elimination assembly comprising a conveying pipe fixedly connected to the bottom of the top plate, a circulation pipe connected to the bottom of the conveying pipe, an ultrasonic vibrator fixedly connected to the bottom of the top plate, and a heating wire fixedly connected inside the coating box.

[0008] The present invention is further provided that both the coating box and the top plate are provided with fixing through holes, and fixing bolts are threadedly connected inside the fixing through holes.

[0009] The utility model further sets up, fixedly connected with the supplementary pipe in the roof, the supplementary pipe surface is connected with one way valve, the supplementary pipe bottom extends to the inside of coating box.

[0010] The utility model further sets up, fixedly connected with the delivery pump in the inside of coating box, the delivery pump output end is connected with the conveying pipe through the pipeline, the delivery pump inlet is connected with the medicine inlet pipe, the medicine inlet pipe surface is connected with the glue inlet pipe, the medicine inlet pipe and glue inlet pipe surface all are connected with the automatic control valve.

[0011] The utility model further sets up, the bottom distance of ultrasonic oscillator is fifteen centimeters in the inside of coating box cavity, the ultrasonic oscillator is the lateral interval fifty centimeters even setting.

[0012] The utility model further sets up, the quantity of roof, scraper and conveying pipe all is two, and the side of scraper near coating roller is the inclined design.

[0013] The utility model has the following beneficial effects.

[0014] 1. The utility model discloses a integrated ultrasonic oscillator and circulation system, which significantly improves the elimination efficiency of glue bubbles in the sandpaper production process. The ultrasonic oscillator destroys the macroscopic bubbles in the glue with high-frequency pressure waves and promotes the escape of small bubbles. At the same time, the cooperation of the circulation pipe and the delivery pump realizes the continuous stirring and temperature balance of the glue, avoiding uneven coating caused by local viscosity difference. In addition, the temperature control function of the heating wire ensures that the glue operates within the optimal viscosity range, further reducing bubble generation. This multi-tube design solves the problems of low static elimination efficiency and difficult removal of high-viscosity glue bubbles, significantly improving the uniformity of the coating and the sand particle bonding strength.

[0015] 2. The utility model discloses a delivery pump, automatic control valve and supplementary pipe, which realizes the quantitative addition and circulation of glue and defoaming agent, reduces manual intervention, and the scraper driven by the hydraulic cylinder can accurately adjust the glue application thickness to adapt to different process requirements. The linkage of the ultrasonic oscillator's timing start-stop (such as working for 30 seconds every 5 minutes) and the temperature control system ensures the stability of bubble elimination and glue state, meets the requirements of continuous production, and this automatic design not only improves the production efficiency, but also reduces the quality risk caused by operation fluctuation, suitable for large-scale manufacturing of high-precision sandpaper.

[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0018] Figure 1 A perspective view of a coating tool for sandpaper production.

[0019] Figure 2 A sectional view of a coating box in a coating tool for sandpaper production.

[0020] Figure 3 A front view of a conveying pipe and a circulating pipe in a coating tool for sandpaper production.

[0021] Figure 4 A top sectional view of a top plate in a coating tool for sandpaper production.

[0022] In the drawings: 1, coating box; 2, coating roller; 3, driving mechanism; 4, top plate; 5, hydraulic cylinder; 6, scraper; 7, conveying pipe; 8, circulating pipe; 9, ultrasonic oscillator; 10, heating wire; 11, fixing bolt; 12, supplementary pipe; 13, one-way valve; 14, conveying pump; 15, medicine inlet pipe; 16, glue inlet pipe; 17, automatic valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described embodiments are only some of the embodiments of the present application, rather than all the embodiments.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4 The present application discloses a coating tool for sandpaper production, which comprises a coating box 1, a coating roller 2 arranged on the top of the coating box 1, a driving mechanism 3 arranged on one side of the coating roller 2, a cover plate assembly arranged on the top of the coating box 1, the cover plate assembly comprising a top plate 4 fixedly connected to the top of the coating box 1, a hydraulic cylinder 5 fixedly connected to the inside of the top plate 4, and a scraper 6 fixedly connected to the output end of the hydraulic cylinder 5. The cover plate assembly is arranged to fix the air bubble eliminating assembly and block the air, so as to slow down the air entering the glue. The coating box 1 is internally provided with an air bubble eliminating assembly, which comprises a conveying pipe 7 fixedly connected to the bottom of the top plate 4, a circulating pipe 8 communicated with the bottom of the conveying pipe 7, an ultrasonic oscillator 9 fixedly connected to the bottom of the top plate 4, and a heating wire 10 fixedly connected to the inside of the coating box 1. The ultrasonic oscillator 9 generates high-frequency pressure waves in the glue, forming micro vacuum bubbles (cavitation bubbles). When the cavitation bubbles collapse instantaneously, the shock wave generated thereby can destroy the macroscopic bubbles already existing in the glue, and promote the combination and floating of the micro bubbles, so as to indirectly reduce the generation of bubbles. The ultrasonic wave can also scatter the agglomerated particles (such as fillers) in the glue, improve the uniformity of the glue, and indirectly reduce the generation of bubbles. The heating wire 10 is arranged to heat the glue at low temperature, so as to make the glue at a better coating temperature.

[0026] Embodiment 2

[0027] Please refer to Figures 1-4 On the basis of embodiment 1, the inside of the coating box 1 and the top plate 4 is provided with a fixed through hole, the inside of the fixed through hole is threadedly connected with a fixing bolt 11, the fixed through hole and the fixing bolt 11 are arranged to fix the top plate 4 on the top of the coating box 1, the inside of the top plate 4 is fixedly connected with a supplement pipe 12, the surface of the supplement pipe 12 is communicated with a one-way valve 13, the bottom of the supplement pipe 12 extends to the inside of the coating box 1, the supplement pipe 12 and the one-way valve 13 are arranged to supplement glue regularly, the one-way valve 13 prevents glue from flowing back, the inside of the coating box 1 is fixedly connected with a delivery pump 14, the output end of the delivery pump 14 is communicated with the delivery pipe 7 through a pipeline, the inlet end of the delivery pump 14 is communicated with a medicine inlet pipe 15, the surface of the medicine inlet pipe 15 is communicated with a glue inlet pipe 16, the surface of the medicine inlet pipe 15 and the glue inlet pipe 16 is communicated with a self-control valve 17, the delivery pump 14 is arranged to deliver glue for the delivery pipe 7, the medicine inlet pipe 15 is arranged to supplement defoaming agent to assist in eliminating bubbles in the glue, the glue inlet pipe 16 is arranged to regularly deliver glue at the bottom of the glue coating box to the delivery pipe 7 through the delivery pump 14, to the coating box 1 through the circulation pipe 8 again, so as to complete glue stirring, balance glue temperature, the self-control valve 17 is arranged to control the delivery direction, the bottom of the ultrasonic oscillator 9 is fifteen centimeters away from the bottom of the inner cavity of the coating box 1, the ultrasonic oscillator 9 is uniformly arranged in a horizontal direction with an interval of fifty centimeters, the uniformly arranged ultrasonic oscillator 9 can improve the bubble elimination effect, the number of the top plate 4, the scraper 6 and the delivery pipe 7 is two, the side of the scraper 6 close to the coating roller 2 is designed to be inclined.

[0028] The working principle of the utility model is as follows: the top plate 4 is installed on the top of the coating box 1 through the fixing bolt 11, the hydraulic cylinder 5 is started according to the need of coating thickness, the scraper 6 is moved to the coating roller 2 under the drive of the hydraulic cylinder 5, the interval of the scraper 6 to the coating roller 2 is adjusted, the excess glue on the surface of the coating roller 2 is scraped off by the scraper 6, the ultrasonic oscillator 9 is started once every five minutes during the glue coating process, the time is thirty seconds once, the bubbles in the glue are eliminated through the ultrasonic oscillator 9.

[0029] The heating wire 10 can be started when the temperature is low to heat the glue, at the same time, the delivery pump 14 delivers the heated glue at the bottom to the circulation pipe 8, the glue is continuously circulated by the circulation pipe 8, the glue temperature is uniform, the self-control valve 17 on the surface of the medicine inlet pipe 15 can be opened regularly during the glue circulation process, the external defoaming agent is quantitatively introduced into the delivery pump 14 through the medicine inlet pipe 15, is added to the glue with the glue circulation, the bubbles are eliminated through the defoaming agent, the high-frequency vibration generated by the ultrasonic oscillator 9 and the glue flow of the circulation pipe 8 form a synergistic effect during the glue circulation process, accelerate the bubble merging and escape.

[0030] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A sand paper production coating tool comprising a coating tank (1), characterized in that: The coating box (1) top is provided with a coating roller (2), one side of the coating roller (2) is provided with a drive mechanism (3); The coating box (1) top is provided with a cover plate assembly, the cover plate assembly includes a top plate (4) fixedly connected to the coating box (1) top, a hydraulic cylinder (5) fixedly connected to the inside of the top plate (4), and a scraper (6) fixedly connected to the output end of the hydraulic cylinder (5); The coating box (1) is provided with a bubble elimination assembly inside, the bubble elimination assembly includes a conveying pipe (7) fixedly connected to the bottom of the top plate (4), a circulating pipe (8) communicated at the bottom of the conveying pipe (7), an ultrasonic oscillator (9) fixedly connected to the bottom of the top plate (4), and a heating wire (10) fixedly connected inside the coating box (1).

2. The sandpaper production coating tool of claim 1, wherein: The coating box (1) and the inside of the top plate (4) are both provided with a fixed through hole, and a fixed bolt (11) is screwed in the fixed through hole.

3. The sandpaper production coating tool of claim 1, wherein: The inside of the top plate (4) is fixedly connected with a supplement pipe (12), the surface of the supplement pipe (12) is communicated with a one-way valve (13), and the bottom of the supplement pipe (12) extends into the inside of the coating box (1).

4. The sandpaper production coating tool of claim 1, wherein: The inside of the coating box (1) is fixedly connected with a conveying pump (14), the output end of the conveying pump (14) is communicated with the conveying pipe (7) through a pipeline, the inlet pipe (15) is communicated with the inlet glue pipe (16) on the surface, and the inlet pipe (15) and the inlet glue pipe (16) are both communicated with a self-control valve (17) on the surface.

5. The sandpaper production coating tool of claim 1, wherein: The bottom of the ultrasonic oscillator (9) is fifteen centimeters away from the bottom of the coating box (1) inner cavity, and the ultrasonic oscillator (9) is uniformly arranged in a horizontal direction with a spacing of fifty centimeters.

6. The sandpaper production coating tool of claim 1, wherein: The number of the top plate (4), the scraper (6) and the conveying pipe (7) is two, and the side of the scraper (6) close to the coating roller (2) is designed to be inclined.

Images