Full-automatic tester for low-temperature flexibility determination of sealing material
By integrating a high-temperature chamber and a low-temperature chamber into a fully automated testing instrument, the problems of high energy consumption and cumbersome operation in the low-temperature flexibility test of sealing materials have been solved, achieving equipment miniaturization and improving the accuracy and efficiency of test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP SUZHOU
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Existing technologies require the use of two high-temperature drying ovens and a low-temperature freezer for the low-temperature flexibility test of sealing materials, resulting in high energy consumption, large space occupation, and cumbersome operation, which affects the accuracy of the test results.
A fully automatic testing instrument was designed, which integrates a high-temperature chamber and a low-temperature chamber into the same housing. The carrier is driven to reciprocate between the high-temperature chamber and the low-temperature chamber by a transfer component to achieve high and low temperature treatment of the specimen, and a bending component is used to automatically and quickly perform bending tests.
It reduces equipment size and power consumption, simplifies operation procedures, improves the accuracy and efficiency of test results, and reduces workload.
Smart Images
Figure CN224500246U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing technology, specifically relating to a fully automatic tester for measuring the low-temperature flexibility of sealing materials. Background Technology
[0002] Sealing materials are mainly used in building gaps, curtain wall installations, second seals for insulated glass, and around solar panels and doors and windows. They need to be able to withstand a certain amount of displacement, and also have excellent adhesion, aging resistance, and adaptability to high and low temperatures. They should be able to withstand the shrinkage and vibration of the bonded components for a long time without being damaged, so as to achieve the purpose of bonding and sealing.
[0003] Sealing materials are mainly classified into silicone-based (accounting for over 80% in engineering projects), polyurethane-based, polysulfide-based, and acrylic-based sealing materials. Regardless of the type, all sealants are subject to long-term aging effects from moisture, ultraviolet radiation (sunlight exposure), freezing, and high heat. Sealing materials harden and become brittle in cold environments. Therefore, low-temperature flexibility is a key indicator for evaluating the elasticity and adhesion of sealing materials in cold conditions, directly affecting whether the material can maintain its flexibility without cracking or detaching at low temperatures. The national standard GB / T13477.7-2002, "Test Methods for Building Sealing Materials - Part 7: Determination of Low-Temperature Flexibility," effectively distinguishes between elastic sealing materials and low-temperature embrittled plastic materials through low-temperature bending tests, and identifies inferior products whose flexibility has decreased due to excessive stretching or aging. This standard employs a high-low temperature cycling treatment: the prepared and cured specimens are subjected to the following steps: a) treatment at (70±2)℃ for 16 hours; b) treatment at (-10±3)℃, (-20±3)℃, (-30±3)℃ or other required temperatures for 8 hours; this treatment is repeated for three cycles. Then, the specimen is bent around a round bar of a specified diameter, with the bending operation completed within 1 to 2 seconds. Immediately after completion, the specimen is inspected for cracking, partial delamination, and adhesive damage. By simulating actual working conditions in the laboratory, the potential for cracking, delamination, and interfacial adhesion failure of the sealant is assessed, and the risk of key failure modes (especially cracking, delamination, and interfacial adhesion failure) of the sealant in practical applications is predicted.
[0004] Currently, in the traditional method of low-temperature flexibility testing, two instruments are mainly used: a high-temperature drying oven and a low-temperature refrigerator, to repeatedly treat the sealing material specimens with high and low temperatures. However, these two instruments are not only energy-intensive and occupy a lot of space, but also require manual repeated handling, transfer, and bending of the specimens. The operation is cumbersome and the workload is high. Especially during bending tests, the specimens need to be taken out manually, which cannot ensure that the bending is completed in time at low temperatures, and can easily affect the accuracy of the test results. Summary of the Invention
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a brand-new fully automatic tester for measuring the low-temperature flexibility of sealing materials.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] A fully automated testing instrument for measuring the low-temperature flexibility of sealing materials, comprising:
[0008] The enclosure has a high-temperature chamber and a low-temperature chamber;
[0009] The carrier includes a supporting round bar and auxiliary support members disposed on opposite sides of the supporting round bar, wherein the supporting round bar forms bending spaces between the opposite sides and the adjacent auxiliary support members, and the specimen is supported on the supporting round bar and the auxiliary support members and covers the bending spaces.
[0010] Transfer components are used to drive the carrier to reciprocate between the high-temperature chamber and the low-temperature chamber;
[0011] The bending component includes a bending member and a power member disposed in a cryogenic chamber. During the bending test, the carrier enters the cryogenic chamber and is located below the bending member. The power member then drives the bending member to pass through the bending spaces on both sides to gradually separate the specimen from the auxiliary support members on both sides and bend it downward around the support rod.
[0012] According to a specific embodiment and preferred aspect of this utility model, the auxiliary support member on each side includes at least one auxiliary support rod, wherein each auxiliary support rod is arranged parallel to the support rod. This facilitates assembly and implementation, and during support, reduces the contact area with the specimen, minimizing wear and preventing interference with test results.
[0013] Preferably, each auxiliary support rod is flush with the top of the support rod. This allows the specimen to be placed horizontally, preventing it from slipping during transport.
[0014] Preferably, the extension directions of the support rod and the auxiliary support rod are perpendicular to the direction of movement of the carrier. This facilitates the transfer component to drive the support rod and the auxiliary support rod from their ends.
[0015] According to another specific embodiment and preferred aspect of the present invention, the bending member includes a first bending round bar and a second bending round bar arranged side by side at intervals and corresponding one-to-one with the bending spaces on both sides. The power member drives the first and second bending round bars to move up and down synchronously to pass through the corresponding bending spaces.
[0016] Preferably, the first bending rod, the second bending rod, and the supporting rod are arranged in parallel. This ensures that the specimen is subjected to uniform force to conform to the supporting rod and bends downwards. At the same time, the specimen is only subjected to downward pressure during bending, avoiding the generation of other directional forces and improving the accuracy of the test results.
[0017] Specifically, during the bending test, the first and second bent round bars are symmetrical about the centerline of the supporting round bar.
[0018] Preferably, in the orthographic projection on the horizontal plane, the distances between the first and second bending rods and the supporting rod are equal to the thickness of the specimen. This ensures that the specimen is bent into place in one continuous motion.
[0019] According to another specific embodiment and preferred aspect of this utility model, the carrier and the bending component constitute a bending test group, and there are multiple bending test groups arranged side by side with intervals. Therefore, multiple test pieces can be tested simultaneously, improving testing efficiency.
[0020] In addition, the transfer component includes a transfer chain and a transfer driver, which are respectively disposed in the high-temperature chamber and the low-temperature chamber and connected to each other at the ends. The support round bar and the auxiliary support are fixedly connected at the ends and mounted on the transfer chain. Here, the structure is simple and easy to install and implement.
[0021] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art:
[0022] Existing technologies for low-temperature flexibility testing traditionally employ two instruments—a high-temperature drying oven and a low-temperature freezer—to repeatedly subject the sealing material specimens to high and low temperature treatments. However, these two devices are not only energy-intensive and space-consuming, but also require manual handling of repeated handling, transfer, and bending of the specimens. This process is cumbersome and labor-intensive, especially during bending tests, where manual removal of the specimens makes it difficult to ensure timely bending at low temperatures, potentially affecting the accuracy of the test results. This application addresses these shortcomings by redesigning the structure of a fully automated testing instrument for low-temperature flexibility testing of sealing materials, cleverly resolving the deficiencies of existing technologies. Next, the specimen is placed on the supporting rod and auxiliary supports, ensuring that the specimen covers the bending space formed between the supporting rod and the adjacent auxiliary supports on both sides. Then, driven by the transfer component, the carrier moves the specimen back and forth between the high-temperature chamber and the low-temperature chamber to repeatedly treat the specimen with high and low temperatures. Finally, a bending test is performed. That is, the specimen that has undergone high and low temperature treatment is transferred to the low-temperature chamber and positioned below the bending component. The power component then drives the bending component to pass through the bending spaces on both sides to gradually detach the specimen from the auxiliary supports on both sides and bend it downward around the supporting rod. Finally, the surface of the specimen is manually inspected to determine the test results. Therefore, compared with the prior art, this utility model, on the one hand, integrates the high-temperature chamber and the low-temperature chamber into the same box and uses the transfer component to drive the carrier to perform high and low temperature treatment on the specimen, resulting in a small device size and low power consumption; on the other hand, based on the cooperation of the carrier and the bending component, it ensures automatic and rapid implementation of bending tests in a low-temperature environment, effectively improving the accuracy of test results. At the same time, it is simple and convenient to operate, effectively reducing workload and significantly improving testing efficiency. Attached Figure Description
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0024] Figure 1 This is a front view schematic diagram of the fully automatic tester in this embodiment;
[0025] Figure 2 for Figure 1 A schematic diagram of the structure after omitting some of the central components;
[0026] Figure 3 for Figure 2 A diagram showing the view from the right.
[0027] Figure 4 for Figure 2 Enlarged schematic diagram of a local structure (under low-temperature treatment);
[0028] Figure 5 for Figure 2 Enlarged schematic diagram of a local part of the structure (under bending test conditions);
[0029] 1. Enclosure; q1. High-temperature chamber; q2. Low-temperature chamber; j1. Heating element; j2. Cooling element; b. Movable chamber plate; w. Transparent observation window;
[0030] 2. Transfer components; 20. Conveyor chain; 21. Transfer drive;
[0031] 3. Carrier; 30. Supporting round bar; 31. Auxiliary support component; 310. Auxiliary supporting round bar; q3. Bending space;
[0032] 4. Bending component; 40. Press-bending component; 401. First press-bending round bar; 402. Second press-bending round bar; 41. Power component;
[0033] S, Specimen. Detailed Implementation
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] like Figures 1 to 5 As shown, the fully automatic testing instrument for measuring the low-temperature flexibility of sealing materials involved in this embodiment includes a housing 1, a transfer component 2, a carrier 3, and a bending component 4.
[0040] Specifically, the upper part of the chamber 1 forms a high-temperature chamber q1 and a low-temperature chamber q2 arranged side by side, and the lower part of the chamber 1 forms a heating element j1 and a cooling element j2 for the high-temperature chamber q1 and the low-temperature chamber q2. The heating element j1 and the cooling element j2 both adopt existing technology, which will not be described in detail here. At the same time, a movable chamber plate b is provided between the high-temperature chamber q1 and the low-temperature chamber q2. The movement of the movable chamber plate b can connect the high-temperature chamber q1 and the low-temperature chamber q2 and facilitate the movement of the specimen, or can separate the high-temperature chamber q1 and the low-temperature chamber q2 to ensure the sealing during high and low temperature treatment. The movable chamber plate b can adopt a pull-out structure.
[0041] For ease of implementation, a transparent observation window w is formed on one side of the housing 1, corresponding to the high-temperature cavity q1 and the low-temperature cavity q2.
[0042] Meanwhile, when implementing temperature control, a PLC temperature control module combined with a temperature sensor is used to achieve real-time monitoring and closed-loop control of the temperatures of the high-temperature cavity q1 and the low-temperature cavity q2.
[0043] In this example, the transfer component 2 is used to drive the carrier 3 to reciprocate between the high-temperature cavity q1 and the low-temperature cavity q2.
[0044] In some specific embodiments, the transfer component 2 includes a transfer chain 20 that is horizontally arranged in the high-temperature chamber q1 and the low-temperature chamber q2 and connected flush with each other from the ends, and a transfer driver 21 that drives the transfer chain 20 to transfer horizontally, wherein the transfer driver 21 is a cylinder and is integrated into the lower part of the housing 1.
[0045] In this example, the carrier 3 includes a supporting round bar 30 and auxiliary support members 31 disposed on opposite sides of the supporting round bar 30. The supporting round bar 30 and the auxiliary support members 31 are fixedly connected from their ends and mounted on the conveyor chain 20. At the same time, the supporting round bar 30 forms bending spaces q3 between its opposite sides and the adjacent auxiliary support members 31. The specimen S is supported on the supporting round bar 30 and the auxiliary support members 31 and covers the bending spaces q3.
[0046] In some specific embodiments, each auxiliary support 31 includes an auxiliary support rod 310, wherein each auxiliary support rod 310 is arranged parallel to the support rod 30. This facilitates assembly and implementation, and reduces the contact area with the specimen during support, thereby reducing wear and avoiding interference with test results.
[0047] Meanwhile, each auxiliary support rod 310 is flush with the support rod 30 from the top, and the extending direction of the support rod 30 and the auxiliary support rod 310 is perpendicular to the movement direction of the carrier 3. This allows the specimen to be placed horizontally to prevent slippage during transfer. Furthermore, if necessary, the number of auxiliary support rods on each side can be increased, and a limiting post can be provided on the outermost auxiliary support rod 310 to limit the side of the specimen.
[0048] In this example, the bending component 4 includes a bending member 40 and a power member 41 disposed in the low-temperature chamber q2. During the bending test, the carrier 3 enters the low-temperature chamber q2 and is located below the bending member 4. The power member 41 then drives the bending member 40 to pass through the bending spaces q3 on both sides to gradually separate the specimen S from the auxiliary support members 31 on both sides and bend it downward around the support rod 30.
[0049] In some specific embodiments, the bending member 40 includes a first bending round bar 401 and a second bending round bar 402 arranged side by side and spaced apart, corresponding one-to-one with the bending spaces q3 on both sides. The power member 31 adopts a conventional lifting drive mechanism to drive the first bending round bar 401 and the second bending round bar 402 to move synchronously up and down through the corresponding bending spaces q3.
[0050] Meanwhile, the first bending rod 401, the second bending rod 402, and the supporting rod 30 are arranged in parallel. This ensures that the specimen is subjected to uniform force to conform to the supporting rod and bend downwards. At the same time, the specimen is only subjected to downward pressure during bending, avoiding the generation of other directional forces and improving the accuracy of the test results.
[0051] To further facilitate implementation, based on PLC program control, during the bending test, the conveyor chain 20 drives the carrier 3 into the bending position of the cryogenic chamber q2. At the bending position, the first bending rod 401 and the second bending rod 402 are symmetrical about the centerline of the supporting rod 30. In their orthographic projection on the horizontal plane, the distances between the first bending rod 401 and the second bending rod 402 and the supporting rod 30 are equal to the thickness of the specimen S. This ensures that the specimen is bent into place in one pass.
[0052] Meanwhile, the diameters of the supporting round bar 30, the auxiliary supporting round bar 310, the first bending round bar 401, and the second bending round bar 402 are equal.
[0053] Furthermore, in this embodiment, the carrier 3 and the bending member 40 constitute a bending test group, with three bending test groups arranged side-by-side at intervals in the direction of carrier movement. Therefore, multiple test pieces can be tested simultaneously, improving testing efficiency.
[0054] In summary, after using this testing instrument, the specimen is placed on the supporting round bar and auxiliary support components, ensuring that the specimen covers the bending space formed between the supporting round bar and the adjacent auxiliary support components on both sides. Then, driven by the transfer component, the carrier moves the specimen back and forth between the high-temperature chamber and the low-temperature chamber to repeatedly treat the specimen with high temperature and low temperature. Finally, a bending test is performed. That is, the specimen that has completed the high and low temperature treatments is transferred to the low-temperature chamber and placed below the bending component. The power component then drives the bending component to pass through the bending space on both sides to gradually separate the specimen from the auxiliary support components on both sides and bend it downward around the supporting round bar. Finally, the surface of the specimen is manually inspected to judge the test results. Therefore, compared with the prior art, this utility model has several advantages. First, it integrates the high-temperature chamber and the low-temperature chamber into the same housing and uses a transfer component to drive the carrier to perform high and low temperature treatment on the specimen, resulting in a small device size and low power consumption. Second, based on the cooperation of the carrier and the bending component, it ensures automatic and rapid bending testing in a low-temperature environment, effectively improving the accuracy of test results. It is also simple and convenient to operate, effectively reducing workload and significantly improving testing efficiency. Third, it ensures that the specimen is uniformly stressed to conform to the supporting rod and bends downwards. Simultaneously, the specimen is only subjected to downward pressure during bending, avoiding the generation of other directional forces and improving the accuracy of test results. Fourth, based on the fact that the distance between the first and second bending rods and the supporting rod is equal to the thickness of the specimen, it ensures that the specimen is bent into place in one go. Fifth, it can simultaneously test multiple specimens, improving testing efficiency.
[0055] 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 fully automatic testing instrument for measuring the low-temperature flexibility of sealing materials, characterized in that, It includes: The enclosure has a high-temperature chamber and a low-temperature chamber; A carrier includes a supporting round bar and auxiliary support members disposed on opposite sides of the supporting round bar, wherein the supporting round bar forms bending spaces between its opposite sides and the adjacent auxiliary support members, and the specimen is supported on the supporting round bar and the auxiliary support members and covers the bending spaces; A transfer component for driving the carrier to reciprocate between the high-temperature chamber and the low-temperature chamber; The bending component includes a bending member and a power member disposed in the low-temperature chamber. During the bending test, the carrier enters the low-temperature chamber and is located below the bending member. The power member then drives the bending member to pass through the bending spaces on both sides to gradually separate the specimen from the auxiliary support members on both sides and bend it downward around the support rod.
2. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 1, characterized in that, Each of the auxiliary support members includes at least one auxiliary support rod, wherein each of the auxiliary support rods is arranged parallel to the support rod.
3. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 2, characterized in that, Each of the auxiliary support rods is flush with the support rod from the top.
4. The fully automatic testing instrument for determining the low-temperature flexibility of sealing materials according to claim 2 or 3, characterized in that, The extension direction of the supporting round bar and the auxiliary supporting round bar is perpendicular to the movement direction of the vehicle.
5. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 1, characterized in that, The bending component includes a first bending round bar and a second bending round bar arranged side by side at intervals and corresponding one-to-one with the bending spaces on both sides. The power component drives the first and second bending round bars to move up and down synchronously to pass through the corresponding bending spaces.
6. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 5, characterized in that, The first bending round bar, the second bending round bar, and the supporting round bar are arranged in parallel.
7. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 6, characterized in that, During the bending test, the first and second bent round bars are symmetrical about the center line of the supporting round bar.
8. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 6, characterized in that, In the orthographic projection on the horizontal plane, the distances between the first bent round bar and the second bent round bar and the supporting round bar are respectively equal to the thickness of the specimen.
9. The fully automatic testing instrument for measuring the low-temperature flexibility of sealing materials according to claim 1, characterized in that, The vehicle and the bending component constitute a bending test group, and there are multiple bending test groups arranged side by side with intervals between them.
10. The fully automatic testing instrument for low-temperature flexibility testing of sealing materials according to claim 1, characterized in that, The transfer component includes a transfer chain and a transfer driver respectively disposed in the high-temperature chamber and the low-temperature chamber and connected from the ends, wherein the support round bar and the auxiliary support are fixedly connected from the ends and mounted on the transfer chain.