A specimen preparation device for testing the heat resistance of waterproof membrane rolls

Abstract

This utility model relates to a specimen preparation device for testing the heat resistance of waterproof membranes. The specimen has multiple areas on its upper surface where coating layers need to be removed. The device includes a positioning unit and a scraping unit. The positioning unit includes an outer frame that encloses a positioning area matching the outer contour of the specimen, and multiple auxiliary modules mounted on the outer frame. The outer frame has multiple openings communicating with the positioning area. The auxiliary modules and openings correspond one-to-one to form scraping areas matching each area to be removed. This utility model, on the one hand, relies on the cooperation of the outer frame and auxiliary modules to ensure that each area to be removed is precisely within the scraping area under positioning, and achieves precise removal using the scraping unit with the sidewall of the scraping area as a reference, effectively improving the accuracy of sample preparation. On the other hand, it is simple and convenient to operate, has high sample preparation efficiency, and meets the need for rapid preparation of large batches of samples.

Description

Technical Field

[0001] This utility model belongs to the field of waterproof membrane testing technology, specifically relating to a specimen preparation device for testing the heat resistance of waterproof membranes. Background Technology

[0002] The heat resistance test of waterproof membrane is a key test to evaluate its ability to resist deformation, sliding or flow in high-temperature environments. It directly affects the safety and durability of building waterproofing projects. During the test, it is necessary to simulate a high-temperature environment (such as the roof temperature in summer) and measure the displacement of the membrane coating layer relative to the substrate to prevent the waterproof layer from failing due to softening at high temperatures in actual use.

[0003] Currently, according to GB / T 328.11-2007 "Test Methods for Waterproofing Membranes - Part 11: Heat Resistance of Bituminous Waterproofing Membranes", the preparation of specimens for Method A requires the removal of some bituminous material from the sample. It is specified that the coating layer on both sides of the specimen should be removed until the substrate is exposed (for multi-layer substrates, the next layer should be exposed). Commonly used methods include adhesive tape peeling, compressed air blowing, and light flame heating.

[0004] However, in actual sample preparation, the existing sample preparation methods are cumbersome and time-consuming to prepare a single specimen, resulting in low sample preparation efficiency and inconvenience. Moreover, they are prone to operational errors, leading to low accuracy in sample preparation and affecting the test results. Therefore, they are not suitable for the rapid preparation of large batches of samples. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a brand-new specimen preparation device for testing the heat resistance of waterproof membranes.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A specimen preparation device for testing the heat resistance of waterproof membranes, wherein multiple areas for removing coating layers are formed on the edge of the upper surface of the specimen, the preparation device includes a positioning unit and a scraping unit, wherein the positioning unit includes an outer frame that surrounds a positioning area matching the outer contour of the specimen, and multiple auxiliary modules set on the outer frame, wherein multiple openings connected to the positioning area are formed on the outer frame, and the multiple auxiliary modules and multiple openings are arranged one-to-one to form scraping areas that match each area to be removed, the specimen is positioned in the positioning area, and the multiple areas to be removed are located in the multiple scraping areas, and the scraping unit is used to sequentially extend into each scraping area and scrape the coating layer from the corresponding opening using the side wall of the scraping area as a reference.

[0008] According to a specific embodiment and preferred aspect of this utility model, the specimen is rectangular, and the outer frame includes first frame strips corresponding to opposite sides of the specimen and second frame strips connected to one end of the two first frame strips, wherein a positioning area is formed between the two first frame strips and the second frame strips. Here, according to the sample preparation requirements, the coating layer is removed from the areas on opposite sides and one end of the specimen.

[0009] Preferably, each first frame strip has a vertically extending first opening, and the inner side of each first frame strip has a first insertion groove connected to the first opening and located above the specimen. The cross-section of the first insertion groove is U-shaped. Multiple auxiliary modules include a first reference block, which is U-shaped and inserted into the first insertion groove with its opening facing the first opening. Here, while realizing vertical sliding adjustment, the limiting effect of the first insertion groove can effectively prevent the auxiliary modules from shaking or shifting during scraping, ensuring the accuracy of the reference position and thus improving the scraping accuracy.

[0010] Specifically, the inner wall of the opening of the first reference block is flush with the inner wall of the first opening. This avoids creating blind spots and ensures that all waste material is removed.

[0011] Preferably, a second opening is formed between the ends of the two first frame bars that are away from the second frame bar, and a second insertion groove extending vertically is formed on the inner wall of each first frame bar. The multiple auxiliary modules also include a second reference block, which is inserted into the second insertion groove on both sides from both ends.

[0012] Preferably, the outer frame also includes an operating handle connected to the second frame strip. This facilitates handheld operation.

[0013] According to another specific embodiment and preferred aspect of this utility model, each auxiliary module forms a reference end from the bottom, which is pressed onto the upper surface of the specimen and constitutes a scraping reference, wherein the reference end coincides with the edge of the corresponding area to be removed. This improves scraping accuracy while preventing the scraped coating material from flowing out between the reference end and the upper surface of the specimen.

[0014] Preferably, each reference end is gradually thinned from top to bottom; and / or, each reference end forms line contact with the upper surface of the specimen. During preparation, it is necessary to use flame baking to heat the coating layer. Based on the line contact between the reference end and the upper surface of the specimen, the probability of deformation of the auxiliary module caused by excessive heat transfer due to excessive flame heating temperature can be reduced.

[0015] According to another specific embodiment and preferred aspect of this utility model, each auxiliary module is slidably connected to the outer frame; and / or, each auxiliary module is made of transparent material for easy observation. This allows for easy adjustment of the height of the auxiliary modules to match specimens of different thicknesses, offering high flexibility and practicality.

[0016] In addition, the scraping unit includes a handle and a cutter head located at one end of the handle, wherein when the cutter head extends into the scraping area, the scraping edge of the cutter head fits against the side wall of the scraping area. This facilitates one-time scraping and further improves sample preparation efficiency.

[0017] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] Existing sample preparation methods are cumbersome and time-consuming to prepare individual specimens, resulting in low efficiency and inconvenience. They are also prone to operational errors, leading to low accuracy and affecting test results, making them unsuitable for rapid preparation of large batches of samples. This application, however, provides an overall structural design for a specimen preparation device used for testing the heat resistance of waterproof membranes, cleverly addressing the shortcomings and defects of existing technologies. With this specimen preparation device, the specimen is placed within the positioning area enclosed by the outer frame to form a positioning, so that multiple areas of coating to be removed on the upper surface of the specimen are correspondingly distributed in the scraping areas formed by the auxiliary modules and the openings. The scraping unit extends into each scraping area in sequence, using the side wall of the scraping area as a reference, to quickly scrape off the coating in the corresponding area from the corresponding opening. Therefore, this utility model, on the one hand, is based on the cooperation of the outer frame and auxiliary modules, so that the areas to be removed from each coating layer of the specimen are accurately placed in the scraping area under positioning, and the scraping unit achieves precise removal with the side wall of the scraping area as a reference, effectively improving the accuracy of sample preparation; on the other hand, it is simple and convenient to operate, has high sample preparation efficiency, and meets the needs of rapid preparation of large batches of samples. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a top view of the specimen in this embodiment;

[0021] Figure 2 This is a front view schematic diagram (including the specimen) of the specimen preparation device for testing the heat resistance of waterproof membrane in this embodiment;

[0022] Figure 3 for Figure 2 A top-down view;

[0023] Figure 4 for Figure 2 Front view of the outer frame;

[0024] Figure 5 for Figure 4 A top-down view;

[0025] Figure 6 This is a front view schematic diagram of the shovel unit in this embodiment;

[0026] Figure 7for Figure 6 A diagram showing the view from the right.

[0027] Where S represents the specimen; S0 represents the area to be removed;

[0028] 1. Positioning unit; 10. Outer frame; 101. First frame strip; 102. Second frame strip; 103. Operating handle; k. Opening; k1. First opening; k2. Second opening; q0. Positioning area; c1. First insertion slot; c2. Second insertion slot; 11. Auxiliary module; 111. First reference block; 112. Second reference block; d. Reference end; q1. Shaving area;

[0029] 2. Shaving unit; 20. Handle; 21. Cutting head. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0035] like Figures 1 to 7 As shown, the specimen preparation device for testing the heat resistance of waterproof membranes involved in this embodiment includes a positioning unit 1 and a scraping unit 2.

[0036] Specifically, the specimen S to be prepared in this embodiment is rectangular, and multiple coating layer removal areas S0 are formed from the edge of the upper surface of the specimen S. In this embodiment, there are three coating layer removal areas S0, which are located on the opposite two sides and one end of the specimen S.

[0037] In this example, the positioning unit 1 includes an outer frame 10 that surrounds a positioning area q0 that matches the outer contour of the specimen, and multiple auxiliary modules 11 disposed on the outer frame 10. The outer frame 10 has multiple openings k that communicate with the positioning area q0. The multiple auxiliary modules 11 and the multiple openings k are configured one-to-one to surround a scraping area q1 that matches each area to be removed. The specimen is positioned in the positioning area q0, and the multiple areas S0 to be removed are located in the multiple scraping areas q1. The scraping unit 2 is used to sequentially extend into each scraping area q1 and scrape the coating layer from the corresponding opening k based on the side wall of the scraping area q1.

[0038] In some specific embodiments, the outer frame 10 includes first frame strips 101 corresponding to opposite sides of the specimen S, second frame strips 102 connected to one end of the two first frame strips 101, and an operating handle 103 connected to the second frame strips 102, wherein a positioning area q0 is formed between the two first frame strips 101 and the second frame strips 102. Here, according to the sample preparation requirements, the coating layer is removed from the areas on opposite sides and one end of the specimen.

[0039] In this example, each auxiliary module 11 is slidably connected to the outer frame 10; each auxiliary module 11 is made of a transparent material for easy observation, such as plexiglass. This allows for easy adjustment of the height of the auxiliary modules to match specimens of different thicknesses, offering high flexibility and practicality.

[0040] Based on the requirements for preparing the specimen in this embodiment, each first frame strip 101 has a first opening k1 that extends vertically, and the inner side of each first frame strip 101 has a first insertion groove c1 that communicates with the first opening k1 and is located above the specimen S. The cross-section of the first insertion groove c1 is U-shaped. A second opening k2 is formed between the ends of two first frame strips 101 that are away from the second frame strip 102, and the inner wall of each first frame strip 101 has a second insertion groove c2 that extends vertically. The multiple auxiliary modules 11 include a first reference block 111 and a second reference block 112, which correspond to and match the first insertion groove c1 on both sides and the second insertion groove c2 located at the end, respectively.

[0041] In some specific embodiments, the first reference block 111 is U-shaped and inserted into each of the first insertion slots c1 with its opening facing the first opening k1. The second reference block 112 is elongated and inserted into the second insertion slots c2 on both sides from both ends. Here, while realizing up-and-down sliding adjustment, the limiting of the first insertion slots can effectively prevent the auxiliary module from shaking or shifting during scraping, ensuring the accuracy of the reference position and thus improving the scraping accuracy.

[0042] Meanwhile, the inner wall of the opening of the first reference block 111 is flush with the inner wall of the first opening k 1. This avoids creating dead corners and ensures that all waste is removed.

[0043] To further facilitate implementation, each auxiliary module 11 forms a reference end d from the bottom, which is pressed onto the upper surface of the specimen S and constitutes a scraping reference, wherein the reference end d coincides with the edge of the corresponding area to be removed. This improves scraping accuracy and prevents the scraped coating material from flowing out between the reference end and the upper surface of the specimen.

[0044] In some specific embodiments, each reference end d is gradually thinned from top to bottom; each reference end d forms line contact with the upper surface of the specimen S. During preparation, it is necessary to use flame baking to heat the coating layer. Based on the line contact between the reference end and the upper surface of the specimen, the probability of deformation of the auxiliary module caused by excessive heat transfer due to excessive flame heating temperature can be reduced.

[0045] Furthermore, the scraping unit 2 includes a handle 20 and a cutter head 21 disposed at one end of the handle 20. When the cutter head 21 extends into the scraping area q1, the scraping edge of the cutter head 21 is in contact with the side wall of the scraping area q1. This facilitates one-time scraping and further improves sample preparation efficiency.

[0046] In summary, by using this specimen preparation device, the specimen is placed in the positioning area enclosed by the outer frame to form a positioning, so that multiple areas of coating to be removed on the upper surface of the specimen are correspondingly distributed in the scraping areas formed by each auxiliary module and the opening. The scraping unit extends into each scraping area in sequence and uses the side wall of the scraping area as a reference to quickly scrape out the coating of the corresponding area from the corresponding opening. Therefore, this utility model, on the one hand, based on the cooperation of the outer frame and the auxiliary module, ensures that the areas to be removed from each coating layer of the specimen are precisely positioned within the scraping area under positioning, and achieves precise removal by using the scraping unit with the side wall of the scraping area as a reference, effectively improving the accuracy of sample preparation; on the other hand, it is simple and convenient to operate, with high sample preparation efficiency, meeting the needs of rapid preparation of large batches of samples; thirdly, based on the reference end, it improves scraping accuracy and prevents the scraped coating material from flowing out between the reference end and the upper surface of the specimen; fourthly, during preparation, it is necessary to use flame baking to heat the coating layer, and based on the line contact formed between the reference end and the upper surface of the specimen, it can reduce the probability of deformation of the auxiliary module caused by excessive heat transfer from the flame heating temperature; fifthly, while realizing up and down sliding adjustment, based on the limiting of the first insertion slot, it can effectively prevent the probability of the auxiliary module shaking and shifting during scraping, ensuring the accuracy of the reference position, and thus improving scraping accuracy; sixthly, it facilitates one-time scraping, further improving sample preparation efficiency.

[0047] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A device for preparing a test piece for heat resistance detection of a waterproofing membrane, a plurality of coating layer removal areas being formed on an upper surface of the test piece, characterized in that, The preparation device includes a positioning unit and a scraping unit. The positioning unit includes an outer frame that surrounds a positioning area matching the outer contour of the specimen and multiple auxiliary modules disposed on the outer frame. The outer frame has multiple openings that communicate with the positioning area. The multiple auxiliary modules and the multiple openings are arranged one-to-one to form scraping areas that match each area to be removed. The specimen is positioned in the positioning area, and the multiple areas to be removed are located in the multiple scraping areas. The scraping unit is used to sequentially extend into each of the scraping areas and scrape the coating layer from the corresponding opening using the side wall of the scraping area as a reference.

2. The specimen preparation apparatus for heat resistance testing of waterproofing membranes as defined in claim 1, wherein, The specimen is rectangular, and the outer frame includes first frame strips corresponding to opposite sides of the specimen and second frame strips connected to one end of the two first frame strips, wherein the positioning area is formed between the two first frame strips and the second frame strips.

3. The specimen preparation apparatus for heat resistance testing of waterproofing membranes of claim 2, wherein, Each of the first frame bars has a first opening that extends vertically, and each of the first frame bars has a first insertion groove on its inner side that communicates with the first opening and is located above the specimen. The cross-section of the first insertion groove is U-shaped. Multiple auxiliary modules include a first reference block, and the first reference block is U-shaped and is inserted into the first insertion groove with its opening facing the first opening.

4. The sample preparation apparatus for heat resistance testing of waterproofing membranes as claimed in claim 3, wherein, The inner wall of the opening of the first reference block is flush with the inner wall of the first opening.

5. The sample preparation apparatus for heat resistance testing of waterproofing membranes as claimed in claim 2, wherein, A second opening is formed between the two first frame bars from the ends away from the second frame bar, and a second insertion groove extending vertically is formed on the inner wall of each first frame bar. The multiple auxiliary modules also include a second reference block, which is inserted into the second insertion groove on both sides from both ends.

6. The sample preparation apparatus for heat resistance testing of waterproofing membranes of claim 2, wherein, The outer frame also includes an operating handle connected to the second frame strip.

7. The sample preparation apparatus for heat resistance testing of waterproofing membranes of claim 1, wherein, Each of the auxiliary modules forms a reference end from the bottom, which is pressed onto the upper surface of the specimen and constitutes a scraping reference, wherein the reference end coincides with the edge of the corresponding area to be removed.

8. The sample preparation apparatus for heat resistance testing of waterproofing membranes of claim 7, wherein, Each of the reference ends is gradually thinned from top to bottom; and / or, each of the reference ends forms line contact with the upper surface of the specimen.

9. The sample preparation apparatus for heat resistance testing of waterproofing membranes of claim 1, wherein, Each of the auxiliary modules is slidably connected to the outer frame; and / or, each auxiliary module is made of a transparent material.

10. The sample preparation apparatus for heat resistance testing of waterproofing membranes of claim 1, wherein, The shaving unit includes a handle and a cutting head disposed at one end of the handle, wherein when the cutting head extends into the shaving area, the shaving edge of the cutting head is in contact with the side wall of the shaving area.

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