A multi-functional wall coating scratch-resistant abrader

Abstract

The utility model relates to a kind of multifunctional wall coating scratch-resistant grinding head device, belong to building wall coating performance testing device technical field.The device includes: main frame, place in the scratch-resistant grinding head of the main frame lower inside;The scratch-resistant grinding head includes: grinding head main body, fixture;The grinding head main body includes: metal chute main body, upper end opening's square tube columnar structure;The fixture includes: two groups of corresponding clamping structure;Each group of clamping structure includes 1 steel clamping piece, 2 groups of screw-nut pair;Two groups of screw-nut pair are correspondingly set in the both ends of the steel clamping piece.The utility model is through standardization interface, without changing can be installed in mainstream washable instrument;Wherein the scratch-resistant grinding head uses detachable structure, and a variety of scraping medium can be quickly replaced and compatible standard scraping piece.The utility model's device's test procedure is simple, result is reliable, and the performance of coating under actual scraping condition can be truly reflected.

Description

Technical Field

[0001] This utility model belongs to the technical field of performance testing devices for building wall coatings, and specifically relates to a multifunctional wall coating scratch-resistant grinding head device. Background Technology

[0002] Building wall coatings are easily scratched or bumped by various objects during daily use, often leaving scratches or black marks on the surface. The so-called "scratch resistance" refers to the coating's ability to resist the formation of black marks due to scratches.

[0003] Currently, the coatings industry lacks dedicated testing equipment for evaluating the scratch resistance of wall coatings. A search reveals that existing relevant instruments mainly include:

[0004] Scrub resistance tester: Following GB / T 9266-2009 "Determination of Scrub Resistance of Architectural Coatings", the coating is evaluated by repeatedly scrubbing it with a bristle brush to ensure it withstands scrubbing without damage. Higher emulsion content and a denser coating make it less prone to abrasion.

[0005] Scratch resistance tester: In accordance with GB / T 9279-2015 "Determination of scratch resistance of paints and varnishes", a scratch test is performed by using a needle to drive a steel ball to scratch the coating in one pass. This is a destructive test of the coating and is used to evaluate its hardness and adhesion. The better the coating hardness and adhesion, the less likely it is to be scratched.

[0006] Five-finger scratch resistance tester: The principle is similar to that of the scratch resistance tester. It uses a tungsten carbide test head to damage the coating surface and test the wear of the damaged coating surface.

[0007] Abrasion tester: According to GB / T 1768-2006 "Determination of abrasion resistance of paints and varnishes - Rotating rubber grinding wheel method", the abrasion resistance is characterized by rubbing the coating with a rubber grinding wheel and measuring the mass loss.

[0008] The aforementioned devices all evaluate coating performance based on the amount of damage or loss, failing to accurately reflect the black residue left by minor scratches on walls from everyday objects. Therefore, this invention proposes a multifunctional scratch-resistant grinding head device for wall coatings to fill this industry gap. Utility Model Content

[0009] This utility model aims to provide a multifunctional wall coating scratch-resistant grinding head device. This device, through a standardized interface, can be installed on mainstream scrubbers without modification. The scratch-resistant grinding head features a detachable structure, allowing for quick replacement of various scraping media and compatibility with standard scraping parts. The multifunctional wall coating scratch-resistant grinding head device of this utility model offers a simple testing process and reliable results, accurately reflecting the coating's performance under actual scraping conditions. Furthermore, this device simultaneously possesses the following three functions: (1) as a scratch-resistant testing grinding head; (2) as a stain-resistant testing grinding head; and (3) as a scrubber-resistant testing grinding head when combined with a matching brush body and main frame.

[0010] To solve the above problems, this utility model achieves the following technical solution:

[0011] This utility model provides a multifunctional wall coating scratch-resistant grinding head device, which includes: a main frame and a scratch-resistant grinding head placed inside the lower part of the main frame (it does not need to be fixedly connected, but is simply embedded in the hollow structure inside the lower part of the main frame);

[0012] in,

[0013] The main frame has a square columnar hollow outer frame that is compatible with the interface of mainstream durable scrubbers. The four corners of the outer frame are chamfered at 45° and thickened. By appropriately widening the frame, the size is moderate, which is conducive to the back-and-forth movement of the sliding frame of the durable scrubber.

[0014] The hollow cavity of the outer frame is provided with a horizontal partition, and the horizontal partition is provided with two vertical columns or screws for passing through and fixing weights with corresponding mounting holes; this design can facilitate the use of weights of different weights.

[0015] The scratch-resistant grinding head includes: a grinding head body and a clamp;

[0016] The grinding head body includes: a metal slide body and a square cylindrical structure with an open upper end;

[0017] The metal chute body is located at the center of the outer bottom of the square cylindrical structure;

[0018] The main body of the metal chute is a square column with a limited number of open circular chute holes in the lower middle part;

[0019] The circular groove hole can be used to place the scraping medium. The partially open circular groove hole can expose a portion of the scraping medium, thereby enabling back-and-forth scraping of the test sample coating.

[0020] The outer bottom of the square cylindrical structure and the top of the metal chute body are detachably fixed by screws that pass through the mounting holes on both the outer bottom of the square cylindrical structure and the mounting holes on the metal chute body. The hard scraping cylindrical medium can be fixed or removed by rotating the screws.

[0021] The clamp includes: two sets of corresponding clamping structures; each set of clamping structures includes one steel clamping plate and two sets of screw-nut pairs;

[0022] The two sets of screw-nut pairs are respectively disposed at both ends of the steel clamp.

[0023] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0024] The scraping medium includes a hard scraping cylindrical medium, which can be directly installed in the scraping-resistant medium groove.

[0025] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0026] The hard-type scraping cylindrical medium includes: cylindrical plastic rods, stainless steel rods, rubber rods, and wooden rods.

[0027] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0028] The width of the metal chute body is less than (preferably slightly less than) the effective clamping length of the steel clips in the fixture (the length between the two sets of screw-nut pairs), thereby ensuring that soft scraping media can be adapted to the fixture.

[0029] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0030] The bottom corners of the metal chute body are rounded to ensure that it will not rub against the test sample when moving back and forth.

[0031] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0032] The multifunctional wall coating scratch-resistant grinding head device also includes a soft scraping medium. The soft scraping medium can be laid flat under the metal slide body. The two ends of the soft scraping medium are clamped by the clamps and combined with the metal slide body to form a protruding soft scraping medium structure. In this way, it can achieve reciprocating motion to scrape the coating, just like the hard scraping cylindrical medium mentioned above.

[0033] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0034] The soft scraping media include: cotton cloth and leather.

[0035] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0036] The two vertically arranged columns or screws of the horizontal partition are designed to be detachable.

[0037] A further optimization of the multifunctional wall coating scratch-resistant grinding head device of this utility model is as follows:

[0038] The specified gauze is laid flat at the bottom of the scratch-resistant medium chute and clamped in place. Then the washability tester is started, and the chute moves the gauze to perform a stain resistance test on the coating surface at a specified stroke and number of reciprocations.

[0039] Remove the scratch-resistant grinding head, replace it with a standard bristle brush, and fix it to the bottom of the main frame in a natural hanging position; start the scrub resistance tester, and the bristle brush performs a scrub resistance test on the coating at the set stroke and number of reciprocations.

[0040] This utility model has the following technical effects:

[0041] (1) The multi-functional wall coating scratch-resistant grinding head device can be installed on mainstream scrubbers without modification through a standardized interface;

[0042] (2) The scraping medium groove design supports quick replacement of various scraping media and is compatible with standard cylindrical scraping parts;

[0043] (3) Scraping the coating under constant load and set number of reciprocating strokes can accurately characterize the coating’s resistance to daily scratching.

[0044] (4) The same device can also be used as a stain resistance test grinding head, or combined with a matching brush body to be used as a washability test grinding head, realizing the three functions of "scraping-staining-washing" in one.

[0045] (5) It has a simple structure, is easy to assemble and disassemble, and has strong versatility. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall structure of the multifunctional wall coating scratch-resistant grinding head device of this utility model.

[0047] Figure 2 This is a schematic diagram of the bottom structure of the multifunctional wall coating scratch-resistant grinding head device of this utility model.

[0048] Figure 3 This is a front cross-sectional view of the multifunctional wall coating scratch-resistant grinding head device of this utility model.

[0049] Figure 4 This is a schematic diagram of the assembly structure of the multifunctional wall coating scratch-resistant grinding head device of this utility model.

[0050] Explanation of reference numerals in the attached diagram:

[0051] 1-Main frame, 11-Load-bearing main body, 12-Column or screw, 2-Scratch-resistant grinding head, 21-Grinding head body, 22-Metal slide body, 23-Nut, 24-Steel clip, 25-Screw, 26-Screw, 27-Circular slide hole. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of the utility model is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model. Any simple improvements to this utility model based on its conceptual framework are within the protection scope of this utility model.

[0053] Example 1

[0054] A multifunctional wall coating scratch-resistant grinding head device includes: a main frame 1 and a scratch-resistant grinding head 2 placed inside the lower part of the main frame 1;

[0055] in,

[0056] The main frame 1 has a square columnar hollow outer frame that is compatible with the interface of mainstream washable scrubbers. The four corners of the outer frame are chamfered at 45° and thickened.

[0057] The hollow cavity of the outer frame is provided with a transverse partition, and the upper part of the transverse partition is the main load body 11 of the weight or constant load.

[0058] The horizontal partition is provided with two vertical columns or screws 12 for passing through and fixing weights with corresponding mounting holes;

[0059] The scratch-resistant grinding head 2 includes: a grinding head body 21 and a clamp;

[0060] The grinding head body 21 includes: a metal slide body 22 and a square cylindrical structure with an open upper end;

[0061] The metal chute body 22 is located at the center of the outer bottom of the square cylindrical structure;

[0062] The metal chute body 22 is a square column with a limited number of open circular chute holes 27 in the lower middle part;

[0063] The circular groove hole 27 can be used to place the scraping medium;

[0064] The outer bottom of the cylindrical structure and the top of the metal slide body 22 are detachably fixed by screws 25 that pass through the mounting holes on both the outer bottom of the cylindrical structure and the mounting holes on the metal slide body 22. After the hard scraping medium is loaded, tightening the screws 25 can strengthen the fixation of the hard scraping medium.

[0065] The clamp includes: two sets of corresponding clamping structures; each set of clamping structures includes 1 steel clamping piece 24 and 2 sets of screw-nut pairs;

[0066] The two sets of screw-nut pairs are respectively disposed at both ends of the steel clip 24.

[0067] The scraping medium includes hard scraping cylindrical media, such as cylindrical plastic rods, stainless steel rods, rubber rods, and wooden rods.

[0068] The width of the metal chute body 22 is less than (preferably slightly less than) the effective clamping length of the steel clamping piece 24 in the fixture, thereby ensuring that soft scraping media can be adapted to the fixture.

[0069] The bottom corners of the metal chute body 22 are rounded.

[0070] Preferably, the multifunctional wall coating scratch-resistant grinding head device further includes a soft scratching medium, which can be laid flat under the metal slide body 22. The two ends of the soft scratching medium are clamped by a clamp, and combined with the metal slide body 22 to form a protruding soft scratching medium structure.

[0071] The soft scraping media include: cotton cloth and leather.

[0072] Soft scraping media such as cotton cloth and leather need to be cut into rectangles first. Loosen the nut 23 in the screw-nut pair, remove the steel clip 24, lay the media flat under the metal groove, and then use the steel clip 24 and nut 23 to press its two ends together. Then place it above the test sample and perform reciprocating scraping motion.

[0073] The two vertical columns or screws 12 of the horizontal partition are designed to be detachable.

[0074] The aforementioned multifunctional wall coating scratch-resistant grinding head device, when used in conjunction with an existing scrub resistance tester, can perform scratch resistance tests.

[0075] In this embodiment:

[0076] The specified gauze is laid flat at the bottom of the scratch-resistant medium chute and clamped in place. Then the washability tester is started, and the chute moves the gauze to perform a stain resistance test on the coating surface at a specified stroke and number of reciprocations.

[0077] Remove the scratch-resistant grinding head 2, replace it with a standard bristle brush, and fix it to the bottom of the main frame 1 in a natural hanging state; start the washability tester, and the bristle brush performs a washability test on the coating at the set stroke and number of reciprocations.

[0078] In this embodiment, not only can different scraping media be replaced, but the constant load weight can also be changed, and the number of scraping movements of the main body of the scraping instrument can be modified to conduct multi-dimensional scraping tests.

[0079] The workflow of this embodiment is as follows:

[0080] 1. Load the scraping medium.

[0081] a. For hard, cylindrical scraping media: place it in the limited open circular groove hole 27, tighten the corresponding screw 25 to position the scraping media;

[0082] b. For soft scraping media such as cotton cloth and leather: Disassemble the screw-nut pair and steel clip 24 in the clamp, lay the scraping medium flat under the metal slide body 22, press both ends under the steel clip 24, and then tighten the corresponding screw 26 and nut 23 in the screw-nut pair.

[0083] 2. Assemble the grinding head

[0084] The scratch-resistant grinding head 2 is placed inside the lower part of the main frame 1, and the scratch-resistant grinding head 2 hangs down naturally under the action of gravity;

[0085] 3. Load the weights

[0086] The mounting hole of the constant load weight is fitted onto the vertical column or screw 12 of the horizontal partition in the main frame 1 to achieve the loading of the weight;

[0087] 4. Start the test

[0088] The assembled multi-functional wall coating scratch-resistant grinding head device was placed on the surface of the test sample, and the device was started to perform reciprocating scratching to evaluate the scratch resistance performance of the coating.

[0089] This invention is based on the stain resistance test for interior walls in GB / T 9780-2013 "Test Method for Stain Resistance of Architectural Coatings," and improves the scrub resistance tester specified in GB / T 9266-2009 "Determination of Scrub Resistance of Architectural Coatings." It independently develops the aforementioned detachable scratch-resistant grinding head, which can directly replace the original test grinding head. This grinding head can be equipped with various scratch-resistant media such as plastic and stainless steel, and performs scratch resistance tests on wall coatings under constant load and a set number of reciprocating cycles. After processing, the test data is comprehensively evaluated according to the scoring criteria to assess the scratch resistance performance of the material. This invention has a simple structure, is easy to assemble and disassemble, and has strong adaptability.

[0090] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present utility model's technical solution using the disclosed technical content shall be considered equivalent embodiments of the present utility model. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

[0091] The descriptions of positions involved in the technical solution of this utility model, such as upper, lower, left, right, etc., are only for clearly describing the corresponding structural connection methods and are not intended to limit the specific actual position of this technical solution. Designs with the same or similar structure, connection method and principle are still within the protection scope of the technical solution of this utility model.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] Unless otherwise stated, the various optimized technical solutions in this utility model can be combined with each other.

[0094] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be applied to this invention.

Claims

1. A multifunctional wall coating scratch-resistant grinding head device, characterized in that: It includes: a main frame and a scratch-resistant grinding head placed inside the lower part of the main frame; in, The main frame has a square columnar hollow outer frame that is compatible with the interface of mainstream durable scrubbers. The four corners of the outer frame are chamfered at 45° and thickened. The hollow cavity of the outer frame is provided with a horizontal partition, and the horizontal partition is provided with two vertical columns or screws for passing through and fixing weights with corresponding mounting holes. The scratch-resistant grinding head includes: a grinding head body and a clamp; The grinding head body includes: a metal slide body and a square cylindrical structure with an open upper end; The metal chute body is located at the center of the outer bottom of the square cylindrical structure; The main body of the metal chute is a square column with a limited number of open circular chute holes in the lower middle part; The circular groove holes can be used to place scraping media; The outer bottom of the square cylindrical structure and the top of the metal slide body are detachably fixed by screws that pass through the mounting holes on both the outer bottom of the square cylindrical structure and the mounting holes on the metal slide body. The clamp includes: two sets of corresponding clamping structures; each set of clamping structures includes one steel clamping plate and two sets of screw-nut pairs; The two sets of screw-nut pairs are respectively disposed at both ends of the steel clamp.

2. The multifunctional wall coating scratch-resistant grinding head device according to claim 1, characterized in that: The scraping medium includes a hard, cylindrical scraping medium.

3. The multifunctional wall coating scratch-resistant grinding head device according to claim 2, characterized in that: The hard-type scraping cylindrical medium includes: cylindrical plastic rods, stainless steel rods, rubber rods, and wooden rods.

4. The multifunctional wall coating scratch-resistant grinding head device according to claim 1, characterized in that: The width of the metal chute body is less than the effective clamping length of the steel clamping plates in the fixture.

5. The multifunctional wall coating scratch-resistant grinding head device according to claim 1, characterized in that: The bottom corners of the metal chute body are rounded.

6. The multifunctional wall coating scratch-resistant grinding head device according to claim 4, characterized in that: The multifunctional wall coating scratch-resistant grinding head device also includes a soft scratching medium, which can be laid flat under the metal slide body. The two ends of the soft scratching medium are clamped by clamps and combined with the metal slide body to form a protruding soft scratching medium structure.

7. The multifunctional wall coating scratch-resistant grinding head device according to claim 6, characterized in that: The soft scraping media include: cotton cloth and leather.

8. The multifunctional wall coating scratch-resistant grinding head device according to claim 1, characterized in that: The two vertically arranged columns or screws of the horizontal partition are designed to be detachable.

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