A high-temperature resistance testing device for composite fabrics

Abstract

This utility model relates to the field of fabric testing technology and discloses a high-temperature resistance testing device for composite fabrics. The device includes a frame with two sets of fixed brackets fixedly installed at the top. To improve testing results, the device employs a testing assembly. When the asynchronous motor on the vertical frame is activated, it works in conjunction with a bidirectional lead screw, threaded block, and connecting rod to move the lower and upper boxes closer together, forming a testing space. A heater is activated to heat the spiral resistance wire, raising the temperature inside the enclosed space. A vacuum pump is then activated, working with the inlet pipe, vertical pipe, outlet pipe, and branch pipe to create a circulating hot airflow. This allows the hot air at the bottom of the workpiece to better circulate to its top, resulting in a more consistent temperature at both ends of the workpiece. This leads to more accurate test results and ultimately, better testing outcomes.

Description

Technical Field

[0001] This utility model relates to the field of fabric testing technology, specifically a high-temperature resistance testing device for composite fabrics. Background Technology

[0002] Composite fabrics, a new type of material made by bonding one or more layers of textile materials, non-woven materials and other functional materials, are widely used in today's society. In the clothing industry, they have become an ideal choice for making various functional garments due to their many excellent properties such as windproof, breathable, waterproof and warm.

[0003] Among the many factors affecting the performance of composite fabrics, high-temperature resistance is crucial. In practical applications, many situations involve high-temperature environments. For example, when clothing is used near a fire source or in a high-temperature work environment, the fabric's high-temperature resistance directly affects the user's safety. In terms of household goods, when near a heat source, the fabric's high-temperature resistance determines whether it will deform or be damaged.

[0004] To accurately assess the high-temperature resistance of composite fabrics, a high-temperature resistance testing device is needed. Traditional testing devices typically place the composite fabric inside the device and heat it using heating elements to simulate a high-temperature environment. The device then observes the changes in the fabric's performance at different temperatures, such as whether deformation, color fading, or physical structural damage occurs.

[0005] However, some existing high-temperature resistance testing devices cannot guarantee a uniform temperature distribution within the testing space during the heating process. Due to factors such as the layout of the heating elements, the heating principle, and the air circulation inside the device, different parts of the fabric may be heated unevenly, which makes the test results unable to accurately reflect the overall high-temperature resistance performance of the composite fabric. Furthermore, some existing testing devices have defects in their sample fixing methods. On the one hand, the fixing method may not be secure enough. During the heating process, due to the thermal expansion and contraction of the fabric or the influence of airflow inside the device, the sample may shift, leading to deviations in the test results and making it difficult to conveniently test the high-temperature resistance performance of more parts of the workpiece.

[0006] In view of this, we propose a high-temperature resistance testing device for composite fabrics. Utility Model Content

[0007] The purpose of this invention is to provide a high-temperature resistance testing device for composite fabrics to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A high-temperature resistance testing device for composite fabrics includes a frame, with a fixing frame fixedly mounted at the top of the frame. Two sets of fixing frames are provided, and a workpiece body is disposed between the tops of the two sets of fixing frames. A testing assembly is disposed at the top of the frame, and the testing assembly includes:

[0010] A vertical frame is provided at the top of the machine frame. An asynchronous motor is fixedly installed at the top of the vertical frame. A bidirectional lead screw is fixedly installed at the output end of the asynchronous motor. Both ends of the bidirectional lead screw are rotatably installed inside the vertical frame through bearing components. Threaded blocks are threaded on the bidirectional lead screw. One end of the threaded block slides against the inner wall of the vertical frame, and a connecting rod is fixedly installed at the other end of the threaded block. There are two sets of threaded blocks and connecting rods, and the two sets of threaded blocks and connecting rods are mirror images of each other at the upper and lower ends of the workpiece body.

[0011] The lower box is fixedly installed on the outer wall of the connecting rod in the lower group, and the upper box is fixedly installed on the outer wall of the connecting rod in the upper group. A heater is fixedly installed on the inner wall of the bottom end of the lower box. A partition is fixedly installed on the top of the heater. A spiral sleeve is fixedly installed on the top of the partition. A resistance wire is provided on the heater and is spirally wound inside the spiral sleeve. A through heat dissipation hole is opened at the bottom of the lower box.

[0012] A baffle is fixedly installed on the top of the upper box, and an air pump is fixedly installed on the top of the baffle. The input end of the air pump is fixedly connected to one end of the air inlet pipe, and the other end of the air inlet pipe is fixedly connected to one end of the vertical pipe. The other end of the vertical pipe passes through the top of the upper box and extends into the interior of the upper box. The output end of the air pump is fixedly connected to one end of the air outlet pipe, and the other end of the air outlet pipe is fixedly connected to one end of the branch pipe. The other end of the branch pipe passes through the top of the upper box and extends into the interior of the upper box.

[0013] In a further embodiment, the branch pipe is provided in multiple sets.

[0014] In a further embodiment, an auxiliary component is provided at the top of the rack. The auxiliary component includes a side tube. The side tube is fixedly installed inside the top side wall of the upper box. A one-way valve is provided on the side tube to avoid the risk of expansion caused by higher internal temperature in the test space.

[0015] In a further embodiment, a conical shroud is fixedly installed at the bottom of the vertical pipe, and multiple sets of the vertical pipe and conical shroud are provided, so that the hot airflow is better drawn into the air pump.

[0016] In a further embodiment, sealing strips are fixedly installed on the outer walls of both the lower and upper boxes facing the workpiece body, thereby improving the sealing of the test space.

[0017] In a further embodiment, a servo linear module is fixedly installed on the top of the frame. Two sets of the servo linear modules are provided, and a horizontal plate is fixedly installed between the sliding parts of the two sets of servo linear modules. The top of the horizontal plate is fixedly connected to the bottom of the vertical frame.

[0018] In a further embodiment, a fixing plate is fixedly installed inside the top of the fixing frame, and a sliding rod is slidably installed inside the fixing plate. Two sets of sliding rods are provided on a single set of the fixing frame, and a handle is fixedly installed between the tops of the two sets of sliding rods. A pressure plate is fixedly installed at the bottom of the sliding rod, and the bottom of the pressure plate fits against the top of the workpiece body. A clamping spring is sleeved on the outside of the sliding rod, and the upper and lower ends of the clamping spring are fixedly connected to the bottom of the fixing plate and the top of the pressure plate, respectively, thereby facilitating the installation and replacement of the workpiece body.

[0019] Compared with the prior art, this utility model provides a high-temperature resistance testing device for composite fabrics, which has the following beneficial effects:

[0020] 1. The high-temperature resistance testing device for this composite fabric, in order to improve the testing results, is designed with testing components. After the workpiece body is placed, the asynchronous motor on the vertical frame is started, causing the bidirectional lead screw to rotate. This causes the two sets of threaded blocks to drive the connecting rods to move up and down in opposite directions. The lower box and the upper box move closer to each other, forming a testing space. The heater is then started, causing the spiral resistance wire to heat up, raising the temperature inside the enclosed space. The partition and heat dissipation holes prevent the external temperature of the heater from getting too high. The baffle insulates the bottom of the air pump. The air pump is started, and the air inlet pipe, vertical pipe, air outlet pipe and branch pipe form a hot airflow circulation, allowing the hot air at the bottom of the workpiece body to flow better to its top. This makes the temperature at both ends of the workpiece body more consistent, resulting in more accurate test results and thus better testing performance.

[0021] 2. The high-temperature resistance testing device for this composite fabric incorporates auxiliary components to improve testing efficiency. Firstly, the one-way valve on the side tube allows for the slow discharge of hot air from the testing space, preventing expansion risks due to higher internal temperatures. The conical shroud facilitates better intake of hot air into the pump. Two sets of sealing strips adhere tightly to the top and bottom of the workpiece, improving the sealing of the testing space. Activating the servo linear module and horizontal plate allows for better lateral movement of the testing group, enabling more convenient testing of the high-temperature resistance of more locations on the workpiece. Pulling the handle causes the slide bar to slide upwards within the fixed plate, moving the pressure plate upwards and compressing the spring to place the workpiece between the pressure plate and the top of the fixed frame. Releasing the handle allows the elastic potential energy of the spring to return to its original position, pressing the pressure plate down to tighten the workpiece. This facilitates easy installation and replacement of the workpiece, thereby improving testing efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram of region A in the middle;

[0025] Figure 4 This utility model Figure 2 Enlarged structural diagram of region B in the middle;

[0026] Figure 5 This is a schematic diagram of the connection of some parts of the test component of this utility model;

[0027] Figure 6 This is a cross-sectional view of the upper box and part of the structure of this utility model;

[0028] Figure 7 This is a cross-sectional view of the lower box and part of the structure of this utility model.

[0029] Explanation of icon numbers:

[0030] 1. Frame; 2. Fixture; 3. Workpiece body;

[0031] 4. Test components; 41. Vertical frame; 42. Asynchronous motor; 43. Double-acting lead screw; 44. Threaded block; 45. Connecting rod; 46. Lower box; 47. Upper box; 48. Heater; 49. Partition; 410. Screw sleeve; 411. Heat dissipation hole; 412. Baffle; 413. Air pump; 414. Air inlet pipe; 415. Vertical pipe; 416. Air outlet pipe; 417. Branch pipe;

[0032] 5. Auxiliary components; 51. Side tube; 52. One-way valve; 53. Conical cover; 54. Sealing strip; 55. Servo linear module; 550. Horizontal plate; 56. Fixing plate; 57. Slide rod; 58. Handle; 59. Pressure plate; 510. Clamping spring. Detailed Implementation

[0033] 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 protection scope of the present utility model.

[0034] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0035] Please see Figures 1-7 This utility model provides a technical solution:

[0036] A high-temperature resistance testing device for composite fabrics includes a frame 1, a fixing frame 2 fixedly installed at the top of the frame 1, two sets of fixing frames 2, and a workpiece body 3 disposed between the tops of the two sets of fixing frames 2.

[0037] In one embodiment of this utility model, a test assembly 4 is provided at the top of the frame 1. The test assembly 4 includes a vertical frame 41. An asynchronous motor 42 is fixedly installed at the top of the vertical frame 41. A bidirectional lead screw 43 is fixedly installed at the output end of the asynchronous motor 42. Both ends of the bidirectional lead screw 43 are rotatably installed inside the vertical frame 41 through bearing components. A threaded block 44 is threaded on the bidirectional lead screw 43. One end of the threaded block 44 slides against the inner wall of the vertical frame 41, and a connecting rod 45 is fixedly installed at the other end of the threaded block 44. Two sets of threaded blocks 44 and connecting rods 45 are provided, and the two sets of threaded blocks 44 and connecting rods 45 are mirror images of each other at the upper and lower ends of the workpiece body 3. A lower box 46 is fixedly installed on the outer wall of the connecting rod 45 in the lower set, and an upper box 47 is fixedly installed on the outer wall of the connecting rod 45 in the upper set. A heater 48 is fixedly installed on the inner wall of the bottom end of the lower box 46, and a [missing information - likely a component or component] is fixedly installed on the top of the heater 48. Partition 49 is made of heat-insulating rock wool. A spiral sleeve 410 is fixedly installed on the top of partition 49. A resistance wire is installed on heater 48 and is spirally wound inside the spiral sleeve 410. A through heat dissipation hole 411 is opened at the bottom of lower box 46. A baffle 412 made of heat-insulating rock wool is fixedly installed on the top of upper box 47. An air pump 413 is fixedly installed on the top of baffle 412. 3. The input end is fixedly connected to one end of the air inlet pipe 414, and the other end of the air inlet pipe 414 is fixedly connected to one end of the vertical pipe 415. The other end of the vertical pipe 415 passes through the top of the upper box 47 and extends into the interior of the upper box 47. The output end of the air pump 413 is fixedly connected to one end of the air outlet pipe 416, and the other end of the air outlet pipe 416 is fixedly connected to one end of the branch pipe 417. The other end of the branch pipe 417 passes through the top of the upper box 47 and extends into the interior of the upper box 47. Furthermore, four sets of branch pipes 417 are provided.

[0038] In this embodiment, after the workpiece body 3 is placed, the asynchronous motor 42 at the top of the vertical frame 41 is started. The output end of the asynchronous motor 42 is fixedly connected to the bidirectional lead screw 43. After the motor starts, the output end begins to rotate, thereby driving the bidirectional lead screw 43 to rotate. Two sets of threaded blocks 44 are threaded on the bidirectional lead screw 43, and one end of the threaded block 44 slides against the inner wall of the vertical frame 41. This allows the threaded block 44 to only move in a straight line along the lead screw. As the bidirectional lead screw 43 rotates, the two sets of threaded blocks 44 will respectively drive the connecting rod 45 fixedly connected to them to move up and down in opposite directions. The lower box 46 and the upper box 47 will move closer to each other as the connecting rod 45 moves, eventually forming a closed test space that encloses the area to be tested of the workpiece body 3. After the test space is formed, the heater 48 is started. The heater 48 is provided with a resistance wire wound in a spiral shape inside the spiral sleeve 410. According to Joule's law, when current passes through the resistance wire, due to the existence of resistance, electrical energy will be converted into heat energy, causing the resistance wire to heat up. The spiral resistance wire design increases the length and distribution area of ​​the resistance wire, allowing for better heat dissipation. The generated heat is first transferred to the spiral sleeve 410, and then further transferred to the air in the test space, causing the temperature inside the test space to gradually rise. At the same time, the partition 49 fixedly installed on the top of the heater 48 is made of heat-insulating rock wool, which can effectively block the upward transfer of heat and protect the vacuum pump 413. The through heat dissipation hole 411 at the bottom of the lower box 46 also helps to dissipate excess heat and maintain the stability of the device. While heating up, the vacuum pump 413 is started, which generates suction, drawing the hot air from inside the test space into the vacuum pump 413 through the air inlet pipe 414 and the vertical pipe 415. Subsequently, the hot air is discharged into the test space through the air outlet pipe 416 and the branch pipe 417, forming a circulation of hot air. This allows the hot air at the bottom of the workpiece body 3 to circulate better to its top, making the temperature at both ends of the workpiece body 3 nearly uniform, thereby improving the accuracy of the test results.

[0039] In one embodiment of this utility model, an auxiliary component 5 is further provided at the top of the frame 1. The auxiliary component 5 includes a side tube 51. The side tube 51 is fixedly installed inside the top side wall of the upper box 47. A one-way valve 52 is provided on the side tube 51 to avoid the risk of expansion caused by higher internal temperature of the test space. Furthermore, a conical cover 53 is fixedly installed at the bottom of the vertical tube 415. Two sets of vertical tubes 415 and conical covers 53 are provided to better draw hot air into the vacuum pump 413. Furthermore, sealing strips 54 are fixedly installed on the outer walls of both the lower box 46 and the upper box 47 facing the workpiece body 3 to improve the sealing of the test space. Furthermore, a servo linear module 55 is fixedly installed at the top of the frame 1. Two sets of linear modules 55 are provided, and a horizontal plate 550 is fixedly installed between the sliding parts of the two sets of servo linear modules 55. The top of the horizontal plate 550 is fixedly connected to the bottom of the vertical frame 41. Further, a fixed plate 56 is fixedly installed inside the top of the fixed frame 2, and a slide rod 57 is slidably installed inside the fixed plate 56. Two sets of slide rods 57 are provided on a single set of fixed frames 2. A handle 58 is fixedly installed between the tops of the two sets of slide rods 57. A pressure plate 59 is fixedly installed at the bottom of the slide rod 57. The bottom of the pressure plate 59 fits against the top of the workpiece body 3. A clamping spring 510 is sleeved on the outside of the slide rod 57. The upper and lower ends of the clamping spring 510 are fixedly connected to the bottom of the fixed plate 56 and the top of the pressure plate 59, respectively, so as to facilitate the installation and replacement of the workpiece body 3.

[0040] In this embodiment, before conducting the high-temperature resistance test, the workpiece body 3 (i.e., the fabric body) needs to be installed on the device. Pulling the handle 58 causes the slide rod 57 to slide upward inside the fixed plate 56 because the handle 58 is fixedly connected to the top of the slide rod 57. Since the pressure plate 59 is fixedly installed at the bottom of the slide rod 57, the pressure plate 59 moves upward as the slide rod 57 moves upward. At this time, the clamping spring 510 sleeved on the outside of the slide rod 57 is compressed and deformed, storing elastic potential energy. Then, the workpiece body 3 is placed between the pressure plate 59 and the top of the fixed frame 2. The handle 58 is released, and the clamping spring 510 begins to recover its deformation. Its elastic potential energy pushes the pressure plate 59 downward to reset until the bottom of the pressure plate 59 is tightly attached to the top of the workpiece body 3, completing the installation of the workpiece body 3. During the entire test process, when the one-way valve 52 is opened, the one-way valve 52 can control the discharge of hot air, slowly discharging the hot air inside the test space to avoid excessive pressure due to excessive temperature inside the space, which could cause expansion risk. The lower box 46 and the upper box 56 are also mentioned. The sealing strips 54 fixedly installed on the outer walls of both boxes 47 facing the workpiece body 3 can tightly adhere to the upper and lower ends of the workpiece body 3, improving the sealing of the test space, preventing hot air from leaking from the enclosure, and ensuring the stability of the test environment. In addition, after the test at one position is completed, the asynchronous motor 42 is reversed, causing the upper box 47 and the lower box 46 to move away from each other. The sliding part of the servo linear module 55 is activated, which will drive the horizontal plate 550 to move laterally. Since the top of the horizontal plate 550 is fixedly connected to the bottom of the vertical frame 41, the test component 4 will move laterally with the movement of the horizontal plate 550, thus making it easier to test the high temperature resistance of more positions of the workpiece body 3. After the test is completed, the steps of installing the workpiece body 3 are reversed. Pull the handle 58 to move the pressure plate 59 upward, pressing against the spring 510 and compressing it again. At this time, the workpiece body 3 can be removed from between the pressure plate 59 and the top of the fixed frame 2, completing a complete test process. Afterwards, a new workpiece body 3 can be replaced as needed for the next round of testing.

[0041] All electrical components mentioned in this application are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that can control the asynchronous motor 42, heater 48, air pump 413, one-way valve 52, and servo linear module 55. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts, and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-temperature resistance testing device for composite fabrics, comprising a frame (1), wherein a fixing frame (2) is fixedly installed at the top of the frame (1), the fixing frame (2) is provided in two sets, and a workpiece body (3) is provided between the tops of the two sets of fixing frames (2), characterized in that: The top of the rack (1) is provided with a test assembly (4), the test assembly (4) including: A vertical frame (41) is provided at the top of the frame (1). An asynchronous motor (42) is fixedly installed at the top of the vertical frame (41). A bidirectional lead screw (43) is fixedly installed at the output end of the asynchronous motor (42). Both ends of the bidirectional lead screw (43) are rotatably installed inside the vertical frame (41) through bearing components. A threaded block (44) is threaded on the bidirectional lead screw (43). One end of the threaded block (44) slides against the inner wall of the vertical frame (41). A connecting rod (45) is fixedly installed at the other end of the threaded block (44). Two sets of threaded blocks (44) and connecting rods (45) are provided, and the two sets of threaded blocks (44) and connecting rods (45) are mirror images of each other at the upper and lower ends of the workpiece body (3). The lower box (46) is fixedly installed on the outer wall of the connecting rod (45) in the lower group, and the upper box (47) is fixedly installed on the outer wall of the connecting rod (45) in the upper group. The heater (48) is fixedly installed on the inner wall of the bottom end of the lower box (46). The top of the heater (48) is fixedly installed with a partition (49). The top of the partition (49) is fixedly installed with a spiral sleeve (410). The heater (48) is provided with a resistance wire, and the resistance wire is spirally wound inside the spiral sleeve (410). The bottom of the lower box (46) is provided with a through heat dissipation hole (411). A baffle (412) is fixedly installed on the top of the upper box (47). An air pump (413) is fixedly installed on the top of the baffle (412). The input end of the air pump (413) is fixedly connected to one end of the air inlet pipe (414). The other end of the air inlet pipe (414) is fixedly connected to one end of the vertical pipe (415). The other end of the vertical pipe (415) passes through the top of the upper box (47) and extends into the interior of the upper box (47). The output end of the air pump (413) is fixedly connected to one end of the air outlet pipe (416). The other end of the air outlet pipe (416) is fixedly connected to one end of the branch pipe (417). The other end of the branch pipe (417) passes through the top of the upper box (47) and extends into the interior of the upper box (47).

2. The high-temperature resistance testing device for composite fabrics according to claim 1, characterized in that: The branch pipe (417) is provided in multiple sets.

3. The high-temperature resistance testing device for composite fabrics according to claim 1, characterized in that: An auxiliary component (5) is also provided at the top of the frame (1). The auxiliary component (5) includes a side tube (51). The side tube (51) is fixedly installed inside the top side wall of the upper box (47). A one-way valve (52) is provided on the side tube (51).

4. The high-temperature resistance testing device for composite fabrics according to claim 3, characterized in that: A conical cover (53) is fixedly installed at the bottom end of the vertical tube (415), and multiple sets of the vertical tube (415) and the conical cover (53) are provided.

5. The high-temperature resistance testing device for composite fabrics according to claim 4, characterized in that: Both the lower box (46) and the upper box (47) have sealing strips (54) fixedly installed on the outer wall of the side facing the workpiece body (3).

6. The high-temperature resistance testing device for composite fabrics according to claim 5, characterized in that: A servo linear module (55) is fixedly installed on the top of the frame (1). There are two sets of the servo linear module (55), and a horizontal plate (550) is fixedly installed between the sliding parts of the two sets of the servo linear module (55). The top of the horizontal plate (550) is fixedly connected to the bottom of the vertical frame (41).

7. The high-temperature resistance testing device for composite fabrics according to claim 6, characterized in that: A fixing plate (56) is fixedly installed inside the top of the fixing frame (2). A slide rod (57) is slidably installed inside the fixing plate (56). Two sets of slide rods (57) are provided on a single set of fixing frames (2). A handle (58) is fixedly installed between the tops of the two sets of slide rods (57). A pressure plate (59) is fixedly installed at the bottom of the slide rod (57). The bottom of the pressure plate (59) is in contact with the top of the workpiece body (3). A clamping spring (510) is sleeved on the outside of the slide rod (57). The upper and lower ends of the clamping spring (510) are fixedly connected to the bottom of the fixing plate (56) and the top of the pressure plate (59) respectively.

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