Mixing device for powder coating

Abstract

The utility model relates to a mixing device for powder coating, which aims at solving the technical problems that the friction resistance is increased due to high-speed rotation when the current cleaning structure is arranged on a stirring device, the loss of a barrel wall is too fast, and the service life is shortened, and comprises a mixing barrel and a stirring mechanism, a rotating part of the rotating mechanism is provided with a limiting part, the limiting part of the limiting part is provided with a material scraping assembly, the material scraping assembly comprises a framework, the side face, close to the inner wall of the mixing barrel, of the framework is provided with a first material scraping strip, and the first material scraping strip is in contact fit with the inner wall of the mixing barrel; the powder coating cleaning device has the advantages that the stirring speed is not affected while powder coating on the inner wall of the mixing barrel is cleaned, meanwhile, the friction loss of the inner wall of the mixing barrel can be reduced, the service life is prolonged, and the scraping assembly is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing devices, in particular to a mixing device for powder coatings. Background Art

[0002] Powder coating is completely different from general coatings in that it exists in the form of fine powder. At present, in the production process of powder coating, the melt mixing method is the most widely used method for manufacturing powder coating at home and abroad. It is widely used because it can directly use solid raw materials, does not use organic solvents or water, and does not have the problem of discharging waste solvents or wastewater.

[0003] The existing powder coating mixing device will make the powder coating adhere to the inner wall of the mixing barrel during the mixing process, so it is necessary to cooperate with a cleaning structure to clean the powder coating on the inner wall. However, the general cleaning structure is directly fixed on the mixing structure, which causes excessive friction between the scraper and the inner wall of the mixing barrel during high-speed rotation, accelerates the wear of the inner wall of the barrel, reduces the service life of the mixing barrel and the scraper, and the wear increases the rotation resistance, affecting the mixing effect. In view of this, we propose a powder coating mixing device. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a mixing device for powder coatings to solve the technical problem that the current cleaning structure is installed on the stirring device, which increases the friction resistance due to high-speed rotation, causes the barrel wall to wear too quickly, and reduces the service life.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a mixing device for powder coating, including a mixing barrel and a stirring mechanism, a rotating mechanism is installed in the mixing barrel, a limiting member is installed on the rotating part of the rotating mechanism, and a scraping assembly is installed on the limiting part of the limiting member;

[0006] The scraper assembly includes a frame, a first scraper strip is installed on the side of the frame close to the inner wall of the mixing barrel, and the first scraper strip is in contact with the inner wall of the mixing barrel, a plug plate combined with the limiting member is fixed on the side of the frame close to the limiting member, and a second scraper strip is fixed at the bottom of the frame to fit the inner wall of the bottom of the mixing barrel.

[0007] Preferably, the cross-sections of the first scraper strip and the second scraper strip are both triangular, and the side ends of the first scraper strip and the second scraper strip that are in contact with the inner wall of the mixing barrel are rounded chamfers.

[0008] Preferably, the limiting member comprises a fixing plate, on the side of which two limiting sleeves plugged with the plugging plate are fixedly provided, and the limiting sleeves are arranged to be inclined upward, and the angle between the limiting sleeves and the fixing plate is an acute angle.

[0009] Preferably, an elastic folding piece that fits with the side surface of the frame is installed on the side surface of the fixing plate, and the bending angle of the elastic folding piece is an arc angle.

[0010] Preferably, the rotating mechanism comprises a driving motor, an output end of the driving motor is provided with a driving gear via a connecting rod, an outer wall of the driving gear is gear-connected with a rotating gear, and the rotating gear is connected to a limiting member.

[0011] Preferably, a support ring is fixedly provided on the inner wall of the mixing barrel, and the support ring is in contact and engagement with the rotating gear.

[0012] Preferably, an annular groove is formed on the upper surface of the support ring, and a support block combined with the annular groove is fixedly provided on the bottom of the rotating gear.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can conveniently arrange the scraper assembly separately inside the mixing barrel through the cooperation of the rotating mechanism and the limiter. The scraper assembly can be moved along the inner wall of the mixing barrel by the low-speed rotation of the rotating mechanism, so as to scrape off the powder coating adhering to the inner wall of the barrel. Such a structural setting can reduce the friction resistance between the two, effectively reduce the friction loss, and increase the service life of the mixing barrel. At the same time, it also solves the problem that the increased friction resistance affects the rotation and stirring speed.

[0015] 2. In the utility model, the inner wall and the bottom side of the mixing barrel can be scraped at the same time by setting the first scraper strip and the second scraper strip, which can reduce the residual powder coating at the bottom of the scraper barrel, facilitate quick cleaning when mixing different color coatings, and is easy to use. At the same time, the scraper assembly is plugged into the limit piece, which is convenient for disassembly and replacement when wear occurs, and the structure is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the position-limiting member in the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the structure of part A in the utility model;

[0020] Figure 5 It is an enlarged schematic diagram of the structure of part B in the utility model.

[0021] In the figure: 1. mixing barrel; 2. stirring mechanism; 3. rotating mechanism; 301. driving motor; 302. driving gear; 303. rotating gear; 304. supporting block; 4. limiting member; 401. fixing plate; 402. limiting sleeve; 403. elastic folding piece; 404. arc angle; 5. scraper assembly; 501. skeleton; 502. first scraper strip; 503. insert plate; 504. second scraper strip; 505. round chamfer. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Example: A mixing device for powder coating, see Figures 1 to 5 , including a mixing barrel 1 and a stirring mechanism 2, a rotating mechanism 3 is installed in the mixing barrel 1, a limiting member 4 is installed on the rotating part of the rotating mechanism 3, the limiting member 4 can be controlled to rotate and move inside the mixing barrel 1 through the rotating mechanism 3, a scraping assembly 5 is installed on the limiting part of the limiting member 4, the position of the scraping assembly 5 is fixed by the limiting member 4, and the scraping assembly 5 is convenient to disassemble and assemble, so that the scraping assembly 5 is easy to rotate and move in the mixing barrel 1, so that the paint adhered to the inner wall can be scraped off, and at the same time, the limiting member 4 and the scraping assembly 5 can be set in two groups, which are symmetrically arranged, so that a circle of scraping work can be completed by completing a half circle of rotation;

[0024] The scraper assembly 5 includes a skeleton 501, on the side of the skeleton 501 close to the inner wall of the mixing barrel 1, a first scraper strip 502 is installed, and the first scraper strip 502 is in contact with the inner wall of the mixing barrel 1. A plug plate 503 combined with the limiter 4 is fixedly provided on the side of the skeleton 501 close to the limiter 4, and a second scraper strip 504 is fixedly provided at the bottom of the skeleton 501, which is in contact with the inner wall of the bottom of the mixing barrel 1. The arrangement of the skeleton 501 can ensure the overall compressive strength and avoid bending. The arrangement of the first scraper strip 502 and the second scraper strip 504 can clean the inner wall and the bottom side of the mixing barrel 1 when rotating. Such an arrangement can reduce the residual paint on the bottom, which is convenient for achieving a quick cleaning effect when mixing paints of different colors.

[0025] Specifically, the cross-sections of the first scraper strip 502 and the second scraper strip 504 are both triangular, and the side ends of the first scraper strip 502 and the second scraper strip 504 that are in contact with the inner wall of the mixing barrel 1 are rounded chamfers 505; the setting of the rounded chamfers 505 can improve the smoothness of the contact surface and reduce friction.

[0026] Furthermore, the limiting member 4 includes a fixed plate 401, on the side of which are fixed two limiting sleeves 402 which are plugged into the plug plate 503, and the limiting sleeves 402 are tilted upward, and the angle between the limiting sleeves 402 and the fixed plate 401 is an acute angle; the tilted limiting sleeves 402 can be obliquely plugged into the plug plate 503, which can improve the limiting effect, and at the same time, the plug-in connection method facilitates the combination or separation operation of the limiting member 4 and the scraper assembly 5.

[0027] Furthermore, an elastic folding piece 403 is installed on the side of the fixed plate 401, which is in contact with the side of the frame 501, and the bending angle of the elastic folding piece 403 is an arc angle 404; the support of the elastic folding piece 403 can bend the elastic folding piece 403 through pressure when the scraper assembly 5 contacts the inner wall of the mixing barrel 1, and the elastic force formed in this way can squeeze the scraper assembly 5 to the inner wall of the mixing barrel 1, thereby ensuring the closeness of the contact and facilitating the scraper cleaning work. The arc angle 404 has a large opening angle and is easy to restore, so it is not easy to deform during squeezing and maintains a good elastic support effect.

[0028] Furthermore, the rotating mechanism 3 includes a driving motor 301, and a driving gear 302 is installed on the output end of the driving motor 301 through a connecting rod. The outer wall of the driving gear 302 is toothed with a rotating gear 303, and the rotating gear 303 is connected to the limit member 4; the driving motor 301 can rotate at a low speed to drive the driving gear 302 to rotate, so that the rotating gear 303 under the toothed connection can rotate synchronously, thereby controlling the rotation and movement of the limit member 4.

[0029] Furthermore, a support ring 101 is fixedly provided on the inner wall of the mixing barrel 1 , and the support ring 101 is in contact and engagement with the rotating gear 303 ; the provision of the support ring 101 facilitates limiting the installation position of the rotating gear 303 .

[0030] Furthermore, an annular groove 102 is opened on the upper surface of the support ring 101, and a support block 304 combined with the annular groove 102 is fixedly provided at the bottom of the rotating gear 303. The contact surface can be reduced by the cooperation between the line-changing groove 102 and the support block 304, thereby reducing the friction resistance of movement.

[0031] Working principle: When mixing powder coatings, the powder coatings in the mixing barrel 1 can be stirred and mixed by starting the stirring mechanism 2, and the rotating mechanism 3 on the barrel cover can be started at the same time. The scraper assembly 5 on the limiter 4 can be driven to rotate and move inside the mixing barrel 1 through the cooperation of the driving motor 301, the driving gear 302 and the rotating gear 303, so that the coatings adhering to the inner wall of the mixing barrel 1 can be scraped off during the movement, so that the coatings can be fully stirred and mixed. Through such a division of labor, the friction resistance between the scraper assembly 5 and the inner wall of the mixing barrel 1 can be reduced, thereby reducing the wear on the inner wall of the barrel and keeping the inner wall of the barrel smooth and flat, so as to maintain a good cleaning effect. Such structural cooperation can also ensure a good stirring speed of the stirring mechanism 2. The second scraper strip 504 on the scraper assembly 5 is arranged to contact the bottom of the mixing barrel 1 to scrape off the residual coating at the bottom, so as to achieve the effect of quickly cleaning the bottom coating, so as to reduce the difficulty of cleaning the bottom when changing different colors of coatings, increase the cleaning speed, reduce the time required for color changing operation, and facilitate use.

[0032] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A mixing device for powder coating, comprising a mixing barrel (1) and a stirring mechanism (2), characterized in that: A rotating mechanism (3) is installed in the mixing barrel (1), a limiting member (4) is installed on the rotating part of the rotating mechanism (3), and a scraping assembly (5) is installed on the limiting part of the limiting member (4); The scraper assembly (5) comprises a frame (501), a first scraper strip (502) being mounted on a side surface of the frame (501) close to the inner wall of the mixing barrel (1), and the first scraper strip (502) being in contact with and in close contact with the inner wall of the mixing barrel (1), a plug plate (503) being fixedly mounted on a side surface of the frame (501) close to the limiting member (4) and being combined with the limiting member (4), and a second scraper strip (504) being fixedly mounted on the bottom of the frame (501) and being in close contact with the inner wall of the bottom of the mixing barrel (1).

2. The powder coating mixing device according to claim 1, characterized in that: The cross-sections of the first scraper strip (502) and the second scraper strip (504) are both triangular, and the side ends where the first scraper strip (502), the second scraper strip (504) and the inner wall of the mixing barrel (1) are attached are rounded chamfers (505).

3. The mixing device for powder coating according to claim 1, characterized in that: The limiting member (4) comprises a fixing plate (401), and two limiting sleeves (402) plugged into the plug plate (503) are fixedly arranged on the side surface of the fixing plate (401), and the limiting sleeves (402) are arranged to be inclined upwards, and the angle between the limiting sleeves (402) and the fixing plate (401) is an acute angle.

4. The mixing device for powder coating according to claim 3, characterized in that: An elastic folding sheet (403) is mounted on the side of the fixing plate (401) and is in contact with the side of the frame (501), and the bending angle of the elastic folding sheet (403) is an arc angle (404).

5. The mixing device for powder coating according to claim 1, characterized in that: The rotating mechanism (3) comprises a driving motor (301), the output end of the driving motor (301) is mounted with a driving gear (302) via a connecting rod, the outer wall of the driving gear (302) is toothed with a rotating gear (303), and the rotating gear (303) is connected to a limiting member (4).

6. The mixing device for powder coating according to claim 5, characterized in that: A support ring (101) is fixedly provided on the inner wall of the mixing barrel (1), and the support ring (101) is in contact with and coupled to the rotating gear (303).

7. The mixing device for powder coating according to claim 6, characterized in that: An annular groove (102) is provided on the upper surface of the support ring (101), and a support block (304) combined with the annular groove (102) is fixedly provided at the bottom of the rotating gear (303).

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