Cold flow test device

Abstract

The utility model discloses a cold flow testing arrangement relates to cold flow test technical field, wherein, cold flow testing arrangement includes bearing assembly, heating assembly and loading assembly, bearing assembly includes the base that is arranged from below to above interval in proper order, test table and bearing platform, and test table is used to bear work piece, heating assembly is located in base, and heating assembly is used to heat work piece, and loading assembly includes driving part and pressing plate, and driving part is located in bearing platform, and driving part is used to drive pressing plate extrusion work piece, in the technical scheme of the utility model, cold flow testing arrangement can carry out cold flow test to work piece, can test work piece under different temperature conditions through heating assembly cold flow performance, and can heat work piece to the temperature of actual use, and it is favorable to the reliability of promotion test result.

Description

Technical Field

[0001] This utility model relates to the field of cold flow testing technology, and in particular to a cold flow testing device. Background Technology

[0002] Hydrocolloids are widely used in medical fields such as wound dressings and stoma baseplates due to their excellent biocompatibility and adhesive properties. However, some hydrocolloid products on the market suffer from serious overflow problems during storage or use, meaning the material slowly flows and spreads outward at room temperature. This phenomenon is known as cold flow in rheology. It not only affects the product's appearance and patient experience but may also impair the dressing's seal due to edge warping, increasing the risk of infection. Therefore, accurately measuring and characterizing the cold flow properties of hydrocolloids is crucial for product quality control and performance improvement. Currently, the industry lacks equipment for cold flow testing. Utility Model Content

[0003] The main purpose of this invention is to provide a cold flow testing device for testing workpieces using cold flow testing.

[0004] To achieve the above objectives, the cold flow testing device proposed in this utility model includes: a support component, a heating component, and a loading component, comprising a base, a test platform, and a support platform arranged sequentially from bottom to top at intervals, wherein the test platform is used to support the workpiece; the heating component is disposed on the base and is used to heat the workpiece; the loading component includes a driving component and a pressure plate, wherein the driving component is disposed on the support platform and is used to drive the pressure plate to squeeze the workpiece.

[0005] In one embodiment, the cold flow testing device further includes a pressure sensor disposed between the drive member and the pressure plate, for detecting the pressure applied by the drive member to the pressure plate.

[0006] In one embodiment, the cold flow testing device further includes a guide assembly, which includes a guide sleeve and a guide rod. One of the guide sleeve and the guide rod is disposed on the pressure plate, and the other is disposed on the support platform. The guide rod passes through the guide sleeve and slides in the vertical direction.

[0007] In one embodiment, the guide sleeve and the guide rod are in one-to-one correspondence to form a guide group, and there are multiple guide groups.

[0008] In one embodiment, the cold flow testing device further includes a heat insulation cover, which is disposed on the base and covers the test platform to form a heating space.

[0009] In one embodiment, the cold flow testing device further includes a pressure sensor and a heat insulation column. The pressure sensor is located on the drive unit, and the heat insulation column passes through the heat insulation cover. One end of the heat insulation column is located outside the heating space and connected to the pressure sensor, while the other end of the heat insulation column is located inside the heating space and connected to the pressure plate.

[0010] In one embodiment, the heating assembly includes a fan, a ventilation duct, and a heating wire. The fan is disposed on the base, the heating wire is disposed within the heating space, and the ventilation duct passes through the heat insulation cover. The fan is used to blow air into the heating space through the ventilation duct.

[0011] In one embodiment, the cold flow testing device further includes a temperature sensor disposed within the heating space.

[0012] In one embodiment, the number of loading components is multiple.

[0013] In one embodiment, the cold flow testing device further includes a controller, which is electrically connected to the drive and the heating assembly respectively, and is used to control the pressure applied by the drive and the heating temperature of the heating assembly.

[0014] In the technical solution of this utility model, the driving component is used to drive the pressure plate to squeeze the workpiece, which can perform cold flow testing on the workpiece. The heating component is used to heat the workpiece, which can test the cold flow performance of the workpiece under different temperature conditions, and can heat the workpiece to the temperature when it is actually used, which is beneficial to improving the reliability of the test results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A perspective view of the cold flow testing device provided by this utility model; Figure 2 for Figure 1 A three-dimensional view of the intercooling flow test device with a protective cover and heat insulation plate.

[0017] Explanation of icon numbers: 10. Cold flow testing device; 1. Supporting component; 11. Base; 12. Test bench; 13. Supporting platform; 2. Heating components; 21. Fan; 22. Ventilation duct; 23. Heating wire; 3. Loading components; 31. Driver components; 32. Pressure plate; 4. Pressure sensor; 5. Guide assembly; 51. Guide sleeve; 52. Guide rod; 6. Heat shield; 7. Heat insulation board; 8. Controller; 9. Temperature sensor; 20. Workpiece.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model proposes a cold flow testing device 10.

[0023] Please see Figure 1In one embodiment of the present invention, the cold flow testing device 10 includes a support component 1, a heating component 2, and a loading component 3. The support component 1 includes a base 11, a test platform 12, and a support platform 13 arranged sequentially from bottom to top. The test platform 12 is used to support the workpiece 20. The heating component 2 is disposed on the base 11 and is used to heat the workpiece 20. The loading component 3 includes a driving component 31 and a pressure plate 32. The driving component 31 is disposed on the support platform 13 and is used to drive the pressure plate 32 to squeeze the workpiece 20.

[0024] Understandably, the cold flow testing device 10 can be used to perform cold flow testing on the workpiece 20. Specifically, the workpiece 20 can be placed on the test table 12. In the vertical direction, the initial thickness of the workpiece 20 is measured as T1. The driving component 31 can drive the pressure plate 32 to move downward to squeeze the workpiece 20, causing the workpiece 20 to deform. Then, the pressure plate 32 is driven to move upward, and the thickness of the workpiece 20 after being squeezed is measured as T2. The thickness change value of the workpiece 20 is obtained by calculating the difference between T1 and T2. By calculating the ratio of T3 to T1, the cold flow performance of the workpiece 20 can be obtained, that is, the cold flow performance. For example, when the ratio of T3 to T1 is greater than a preset threshold, it indicates that the cold flow performance of workpiece 20 is poor, and when the ratio of T3 to T1 is less than the preset threshold, it indicates that the cold flow performance of workpiece 20 is good.

[0025] The heating component 2 is used to heat the workpiece 20, which can test the cold flow performance of the workpiece 20 under different temperature conditions, and can heat the workpiece 20 to the actual use temperature, which is beneficial to improving the reliability of the test results. The workpiece 20 can be a hydrocolloid, metal plate, etc. The test stage 12 and the support stage 13 can be fixed on the base 11 by multiple columns.

[0026] In the technical solution of this utility model, the driving component 31 is used to drive the pressure plate 32 to squeeze the workpiece 20, which can perform cold flow test on the workpiece 20. The heating component 2 is used to heat the workpiece 20, which can test the cold flow performance of the workpiece 20 under different temperature conditions, and can heat the workpiece 20 to the temperature when it is actually used, which is beneficial to improving the reliability of the test results.

[0027] In some embodiments, please refer to Figure 1 The driving component 31 is constructed as an electric cylinder. The cylinder body of the electric cylinder is located on the support platform 13. The push rod of the electric cylinder is connected to the pressure plate 32. The electric cylinder has high control precision, so as to accurately control the downward stroke of the pressure plate 32, and thus accurately control the pressure applied to the workpiece 20 by the pressure plate 32. This helps to ensure that the cold flow test is carried out under the preset pressure conditions and improves the reliability of the test results.

[0028] In other embodiments not shown in the figures, the drive member 31 is constructed as a telescopic rod, with its two ends connected to the support platform 13 and the pressure plate 32, respectively. When the telescopic rod extends, it can drive the pressure plate 32 to move downward to squeeze the workpiece 20. When the telescopic rod shortens, it can drive the pressure plate 32 to move upward. The telescopic rod has a low cost, which helps to reduce the production cost of the cold flow testing device 10.

[0029] In the embodiments of this utility model, please refer to Figure 1 The cold flow testing device 10 also includes a pressure sensor 4, which is located between the drive member 31 and the pressure plate 32 to detect the pressure applied by the drive member 31 to the pressure plate 32, so that the drive member 31 can drive the pressure plate 32 to squeeze the workpiece 20 with a preset pressure, which helps to improve the reliability of the test results.

[0030] It is understandable that when the driving component 31 drives the pressure plate 32 to press the workpiece 20, the pressure applied by the driving component 31 to the pressure plate 32 will be transmitted to the workpiece 20 through the pressure plate 32. That is, the pressure applied by the pressure plate 32 to the workpiece 20 can be obtained in real time and accurately through the pressure sensor 4, so as to adjust the loading situation according to the reading of the pressure sensor 4. For example, when the pressure applied by the pressure plate 32 to the workpiece 20 is less than the preset pressure, the driving component 31 can drive the pressure plate 32 to continue to move downward, so that the pressure on the workpiece 20 can be increased to the preset pressure, thereby ensuring that the cold flow test of the workpiece is carried out under the preset pressure condition, which is conducive to improving the reliability of the test results.

[0031] In the embodiments of this utility model, please refer to Figure 1 The cold flow testing device 10 also includes a guide assembly 5, which includes a guide sleeve 51 and a guide rod 52. One of the guide sleeve 51 and the guide rod 52 is located on the pressure plate 32, and the other is located on the support platform 13. The guide rod 52 passes through the guide sleeve 51 and slides in the vertical direction.

[0032] It is understandable that when the guide sleeve 51 is located on the pressure plate 32, the guide rod 52 is located on the support platform 13. When the guide rod 52 is located on the pressure plate 32, the guide sleeve 51 is located on the support platform 13. The guide rod 52 passes through the guide sleeve 51 and slides in the vertical direction. When the driving member 31 drives the pressure plate 32 to move, the guide rod 52 slides relative to the guide sleeve 51 to guide the pressure plate 32, so that the pressure plate 32 moves in the vertical direction, reducing the risk of the pressure plate 32 tilting during the movement. This is beneficial for the pressure plate 32 to evenly squeeze the workpiece 20, which is beneficial for the workpiece 20 to be evenly stressed, which is beneficial for improving the consistency of deformation of various parts of the workpiece 20, and thus beneficial for the accuracy and repeatability of the test results.

[0033] In the embodiments of this utility model, please refer to Figure 1The guide sleeve 51 and the guide rod 52 are paired one-to-one to form a guide group. There can be multiple guide groups, such as two, three, or four, which helps the workpiece 20 to be subjected to uniform force, thereby improving the accuracy of the test.

[0034] Understandably, multiple guide groups are connected to different parts of the pressure plate 32. When the driving member 31 drives the pressure plate 32 to move, the multiple guide groups can guide different parts of the pressure plate 32 so that the different parts of the pressure plate 32 move synchronously in the vertical direction. This can effectively prevent the pressure plate 32 from tilting, which is conducive to the pressure plate 32 pressing the workpiece 20 evenly. This is conducive to the workpiece 20 being subjected to even force, which is conducive to improving the consistency of deformation of each part of the workpiece 20, and thus conducive to the accuracy and repeatability of the test results.

[0035] In the embodiments of this utility model, please refer to Figure 2 The cold flow testing device 10 also includes a heat insulation cover 6, which is located on the base 11 and covers the test platform 12 to form a heating space.

[0036] It is understandable that when the heating component 2 heats the workpiece 20, the heat insulation cover 6 can reduce the heat exchange between the workpiece 20 and the external environment of the heating space, reduce the heat loss of the workpiece 20, so that the workpiece 20 can be heated to the preset temperature quickly, thereby improving the heating efficiency. Moreover, when conducting cold flow tests, it helps the workpiece 20 maintain the preset temperature, thereby improving the accuracy and repeatability of the test results.

[0037] The heat insulation cover 6 can be made of insulating materials such as quartz or cotton rock, which can effectively reduce the heat exchange between the workpiece 20 and the external environment of the heating space, which is conducive to improving heating efficiency and improving the accuracy and repeatability of test results.

[0038] In the embodiments of this utility model, please refer to Figure 2 The heat insulation cover 6 has an observation port. The cold flow testing device 10 also includes a heat insulation plate 7, which is detachably connected to the observation port. The heat insulation plate 7 is made of transparent material. Before conducting the cold flow test, the heat insulation plate 7 can be removed from the observation port to allow the workpiece 20 to be placed on the test platform 12 in the heating space through the observation port. After placing the workpiece 20, the heat insulation plate 7 can be installed back into the observation port to reduce heat exchange between the workpiece 20 and the external environment of the heating space when heating the workpiece 20. During the cold flow test, the interior of the heating space can be observed through the transparent heat insulation plate 7, enabling visual monitoring. The heat insulation plate 7 can be detachably connected to the observation port by means of fasteners or by means of snap-fit.

[0039] In an embodiment of this utility model, the cold flow testing device 10 further includes a pressure sensor 4 and a heat insulation column. The pressure sensor 4 is located on the drive component 31, and the heat insulation column passes through the heat insulation cover 6. One end of the heat insulation column is located outside the heating space and connected to the pressure sensor 4, while the other end of the heat insulation column is located inside the heating space and connected to the pressure plate 32.

[0040] It is understandable that the heat insulation column is connected between the pressure sensor 4 and the pressure plate 32. When the pressure plate 32 is heated, the heat of the workpiece 20 is prevented from being conducted to the heat insulation column, thus preventing the pressure sensor 4 from drifting at zero point, changing its sensitivity, or even being damaged due to heat. This helps to ensure the stable operation of the pressure sensor 4, thereby improving the accuracy of pressure detection.

[0041] In addition, the end of the heat insulation column located outside the heating space is connected to the pressure sensor 4, so that the pressure sensor 4 is located outside the heating space. When the workpiece 20 is heated by blowing hot air into the heating space, the hot air can be prevented from heating the pressure sensor 4. This can further prevent the zero-point drift, sensitivity change or even damage caused by the pressure sensor 4 being heated, which is conducive to ensuring the stable operation of the pressure sensor 4 and improving the accuracy of the detected pressure.

[0042] In the embodiments of this utility model, please refer to Figure 1 The heating component 2 includes a fan 21, a ventilation pipe 22 and a heating wire 23. The fan 21 is located on the base 11, the heating wire 23 is located in the heating space, and the ventilation pipe 22 passes through the heat insulation cover 6. The fan 21 is used to blow air into the heating space through the ventilation pipe 22.

[0043] It is understandable that the heating wire 23 can heat the air in the heating space, and the fan 21 blows air into the heating space through the ventilation pipe 22, which can make the air in the heating space circulate so that the surface of the workpiece 20 is wrapped by the heated air, which is conducive to achieving uniform heating of the workpiece 20, and thus helps to improve the accuracy of the test results.

[0044] In some embodiments of this utility model (not shown in the figures), the heating assembly 2 includes a medium storage tank and a heater. The medium storage tank is disposed on the base 11. The heater is used to heat the heat exchange medium in the medium storage tank. The test platform 12 has a medium flow channel inside. The outlet of the medium storage tank is connected to the inlet of the medium flow channel. The inlet of the medium storage tank flows into the outlet of the medium flow channel. After being heated by the heater, the heat exchange medium in the medium storage tank can flow into the medium flow channel. The heat exchange medium can exchange heat with the workpiece 20 through the test platform 12 to heat the workpiece 20. After heat exchange, the heat exchange medium can flow back into the medium storage tank to achieve the circulation of the heat exchange medium. Heating the workpiece 20 through the heat exchange medium has high heating efficiency and can quickly heat the workpiece 20 to the preset temperature, thereby improving the testing efficiency. The heat exchange medium can be water, oil, air, etc. The medium flow channel can be constructed as a serpentine flow channel, which can increase the length of the medium flow channel, which is beneficial to increasing the heat exchange area between the heating platform and the workpiece 20, improving the uniformity of heating the workpiece 20, and thus improving the accuracy of the test results.

[0045] In an embodiment of this utility model, the cold flow testing device 10 further includes a temperature sensor 9, which is located in the heating space. It is understood that the temperature sensor 9 can detect the temperature in the heating space in real time so as to accurately heat the workpiece 20 to a preset temperature so that the workpiece 20 can be tested for cold flow at the preset temperature, which is beneficial to improving the accuracy of the test results.

[0046] In the embodiments of this utility model, please refer to Figure 1 The number of loading components 3 is multiple. It can be understood that the test table 12 can place workpieces 20 corresponding to multiple loading components 3 one by one, and multiple workpieces 20 can be cold flow tested at the same time, which can effectively improve the testing efficiency. The multiple loading components 3 can be distributed side by side or in an array on the support table 13.

[0047] In the embodiments of this utility model, please refer to Figure 1 The cold flow testing device 10 also includes a controller 8, which is electrically connected to the drive unit 31 and the heating component 2 respectively. The controller 8 is used to control the pressure applied by the drive unit 31 and control the heating temperature of the heating component 2.

[0048] Understandably, the controller 8 can precisely control the pressure applied by the drive component 31 to ensure that the cold flow test is conducted under preset pressure conditions, while simultaneously controlling the heating temperature of the heating component 2 to ensure that the workpiece 20 is tested at a preset temperature. The combination of these two methods can accurately simulate the cold flow performance of the workpiece 20 under different temperature and pressure conditions, which is beneficial to improving the accuracy, reliability, and repeatability of the test. The controller 8 can be electrically connected to the temperature sensor 9. The temperature signal of the heating space detected by the temperature sensor 9 can be transmitted to the controller 8, and the controller 8 can precisely control the heating temperature of the heating component 2 based on the temperature signal.

[0049] In this embodiment, the controller 8 can be configured as a PLC touch screen all-in-one machine, integrating a human-machine interface and control functions. It is convenient and intuitive to operate. The control functions can include start / stop functions, temperature settings, test time settings, and other functional modules. These can be implemented through physical button elements or through built-in software. The software can read the position information of the pressure plate 32, set the time information and temperature information in real time, and realize fully automated control of the test process.

[0050] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cold flow testing device, characterized in that, include: The support assembly includes a base, a test platform, and a support platform arranged sequentially from bottom to top, wherein the test platform is used to support the workpiece; A heating assembly, disposed on the base, for heating the workpiece; and... The loading component includes a drive member and a pressure plate. The drive member is disposed on the support platform and is used to drive the pressure plate to squeeze the workpiece.

2. The cold flow testing device as described in claim 1, characterized in that, The cold flow testing device also includes a pressure sensor, which is located between the driving member and the pressure plate to detect the pressure applied by the driving member to the pressure plate.

3. The cold flow testing device as described in claim 1, characterized in that, The cold flow testing device also includes a guide assembly, which includes a guide sleeve and a guide rod. One of the guide sleeve and the guide rod is located on the pressure plate, and the other is located on the support platform. The guide rod passes through the guide sleeve and slides in the vertical direction.

4. The cold flow testing device as described in claim 3, characterized in that, The guide sleeve and the guide rod are paired one-to-one to form a guide group, and there are multiple guide groups.

5. The cold flow testing device as described in claim 1, characterized in that, The cold flow testing device also includes a heat insulation cover, which is disposed on the base and covers the test platform to form a heating space.

6. The cold flow testing device as described in claim 5, characterized in that, The cold flow testing device also includes a pressure sensor and a heat insulation column. The pressure sensor is located on the driving component, and the heat insulation column passes through the heat insulation cover. One end of the heat insulation column is located outside the heating space and connected to the pressure sensor, while the other end of the heat insulation column is located inside the heating space and connected to the pressure plate.

7. The cold flow testing device as described in claim 5, characterized in that, The heating assembly includes a fan, a ventilation duct, and a heating wire. The fan is located on the base, the heating wire is located within the heating space, and the ventilation duct passes through the heat insulation cover. The fan is used to blow air into the heating space through the ventilation duct.

8. The cold flow testing device as described in claim 7, characterized in that, The cold flow testing device also includes a temperature sensor, which is located within the heating space.

9. The cold flow testing device as described in claim 1, characterized in that, The number of loading components is multiple.

10. The cold flow testing device as described in claim 1, characterized in that, The cold flow testing device also includes a controller, which is electrically connected to the drive unit and the heating component, respectively. The controller is used to control the pressure applied by the drive unit and the heating temperature of the heating component.

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