Gray fabric napping experiment machine

Abstract

The invention discloses a gray fabric napping experiment machine, which relates to the technical field of textile detection, and comprises a machine body as a support frame of equipment; the working table is fixed at the top of the machine body; a gray fabric clamping device; an experiment roller body; and the negative pressure directional fluff collecting module is integrated in the machine body and located in an area below the experiment roller body, and the negative pressure directional fluff collecting module is electrically connected with a driving assembly for driving the experiment roller body and is in linkage control with the driving assembly. Through the integrated linkage control negative pressure directional fluff collection module, the fluff is synchronously adsorbed in real time in the test, and the key problem that the fluff drifts away to pollute equipment and the environment is fundamentally solved; and meanwhile, the special gray fabric clamping device is combined with the friction-controllable experimental roller body, so that the specialty of gray fabric fixing and friction simulation is ensured. Therefore, the cleanness of a test environment, the improvement of equipment reliability and the enhancement of objectivity and accuracy of a test result are realized.

Description

Technical Field

[0001] This invention relates to the field of textile testing technology, and in particular to a fabric fiber testing machine. Background Technology

[0002] In the production, research and development, and quality inspection of textiles, the pilling resistance of greige fabric is a key quality indicator, directly affecting the appearance retention and durability of the final product, such as clothing and home textiles. Whether controlling production quality, optimizing fabric processes, or issuing authoritative test reports, a testing method and equipment are needed to objectively, quantitatively, and repeatably simulate and evaluate the pilling phenomenon caused by friction on the greige fabric surface. The equipment used to standardize this process, namely the greige fabric pilling test machine, is a fundamental tool for scientific quality assessment in the textile industry.

[0003] Currently, there are several methods and devices for evaluating the pilling performance of fabrics. The most basic method is the manual friction comparison method, which relies on the sensory judgment of inspectors and is highly subjective. More common are general-purpose fabric abrasion and pilling testers such as the Martindale abrasion tester and the circular trajectory pilling box. These devices typically have standard friction heads, specified pressures and motion trajectories, and can test cut fabric samples, determining the pilling level through subsequent visual rating. During or after the test, some devices may also use manual brushing or simple collection methods to handle the detached fibers.

[0004] While the existing equipment provides more standardized testing conditions than manual methods, it has systemic shortcomings when serving the specific, high-standard scenario of fabric performance testing. First, general-purpose equipment is not specifically designed for testing fabrics, especially wide, unfinished semi-finished products. It has limitations in sample clamping, maintaining flatness, and simulating the unique frictional conditions of fabrics. Second, the large amount of loose lint generated during testing can disperse and contaminate the laboratory environment, affecting the long-term stability of the equipment and the hygiene of the testing environment. This does not meet the requirements of online quality inspection by manufacturers and third-party testing institutions for equipment reliability and environmental cleanliness. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art, such as the pollution of equipment and environment by lint and the lack of professionalism in fabric friction testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The billet fabrication testing machine includes: The body serves as the supporting frame for the equipment; The workbench, fixed to the top of the machine body, is used to support the fabric to be tested; A fabric clamping device is installed on the workbench to press and fix the fabric to the workbench. The fabric clamping device includes a horizontal quick clamp and a clamping assembly. The clamping assembly is installed on the horizontal quick clamp through a movable adjustment structure. The experimental roller is driven by a drive assembly and rotatably mounted on the worktable via a bearing seat. A clearance opening is provided in the middle of the worktable. The circumferential surface of the experimental roller protrudes from the clearance opening. The surface of the experimental roller has a set friction coefficient to cooperate with the fabric clamping device to perform controllable reciprocating rolling friction on the fabric fixed on the worktable. A negative pressure directional lint collection module is integrated inside the machine body and located in the area below the test roller. The negative pressure directional lint collection module is electrically connected to and linked with the drive component that drives the test roller, and is used to synchronously adsorb and collect lint that falls off the surface of the fabric during the friction test.

[0007] Preferably, the negative pressure directional fluff collection module includes a guide channel, a directional collection groove, a negative pressure adsorption component, and a filter and fluff storage unit. The guide channel has an arc-shaped groove at its inlet, which is adapted to be positioned directly below the experimental roller. The directional collection groove is connected to the outlet of the guide channel. The suction port of the negative pressure adsorption component is connected to the end of the directional collection groove. The filter and fluff storage unit is connected to the airflow path of the negative pressure adsorption component.

[0008] Preferably, the directional collection trough is a drawer-type structure that can be pulled out from the side of the machine body. The bottom of the trough has a guide surface that is inclined towards the suction port. The guide channel is close to the upper edge of the inlet of the test roller body. At least two flexible anti-drift strips are symmetrically arranged on both sides of the working part of the test roller body. The inner end of the flexible anti-drift strip is close to the roller body shaft seat. The directional collection trough and the outlet of the guide channel are matched to achieve close contact.

[0009] Preferably, the negative pressure adsorption assembly further includes a negative pressure pump and a linkage control circuit, wherein the linkage control circuit is configured to synchronize the start and stop of the negative pressure pump with the drive assembly of the experimental roller, or to achieve delayed shutdown of the negative pressure pump.

[0010] Preferably, the air inlet of the filter and lint storage unit is detachably connected to the outlet of the negative pressure adsorption component via a flexible hose. The hose interface uses a quick-connect fitting. The filter and lint storage unit is located in a matching groove on the front panel of the machine body and is a transparent filter box that can be independently removed from the machine body. The filter and lint storage unit is equipped with a filter for intercepting lint. A sealing strip is provided between the guide channel and the inner wall of the machine body.

[0011] Preferably, the fabric clamping device adopts a horizontal quick clamp, the structure of which includes a support bracket, a handle connecting rod, a driven connecting rod, and a clamping arm. The support bracket has a double hinge point, which is hinged to one end of the handle connecting rod and one end of the driven connecting rod, respectively. The other end of the two connecting rods is coaxially hinged to the clamping arm. The clamping assembly includes an adjusting screw and a fastening pressure head. The adjusting screw vertically passes through the movable groove of the clamping arm. A wing-shaped locking nut and a wing-shaped support nut are respectively provided on the upper and lower sides of the movable groove. The wing-shaped locking nut and the wing-shaped support nut cooperate to realize the vertical positioning of the adjusting screw and allow for manual tool-free quick adjustment.

[0012] Preferably, the side wall of the movable groove is provided with scale lines, and the adjusting screw can move left and right along the movable groove and achieve precise positioning with the help of the scale lines to ensure the consistency of clamping position of multiple sets of experiments. The upper side of the movable groove is also provided with a rotating locking sleeve to help enhance the locking effect.

[0013] Preferably, the fastening head is connected to the bottom end of the adjusting screw via a detachable structure. The detachable structure includes an external threaded connector at the top of the fastening head and an internal threaded hole at the bottom end of the adjusting screw. The external threaded connector and the internal threaded hole are screwed together to achieve quick assembly. A pin hole is provided radially at the junction of the external threaded connector and the internal threaded hole. A positioning pin is inserted into the pin hole to prevent relative rotation due to force during clamping, so as to meet the needs of frequently changing fastening heads of different materials in experiments.

[0014] Preferably, the worktable is a stainless steel worktable, and its surface is provided with mounting positions for positioning the fabric clamping device and scale markings. The worktable has a shedding hole in the non-contact area with the test roller.

[0015] Preferably, it also includes a barrier, which is detachably placed on a platform set on the outer periphery of the machine body and surrounds the test roller to prevent lint from scattering during the friction test. The barrier is provided with an auxiliary suction port, which is connected to the negative pressure directional lint collection module through a pipeline.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The device of this invention uses a negative pressure directional lint collection module with linkage control to synchronously and automatically adsorb and collect lint during friction testing, fundamentally preventing it from spreading and contaminating the core components of the equipment and the laboratory environment, and significantly improving the long-term operational reliability of the equipment and the cleanliness of the testing environment.

[0017] The clamping device, designed specifically for the fabric, combined with an adjustable and positionable pressure head, ensures that the wide fabric is flat, firm, and reproducibly fixed during testing, avoiding slippage and wrinkles. The dedicated test roller provides a standard and controllable friction simulation, making the test conditions more closely resemble the actual working conditions of the fabric, and the results are more valuable for reference.

[0018] By efficiently guiding the collected fluff into a transparent filter and fluff storage unit, operators can visually observe or accurately weigh the weight of the shed fibers, providing an objective and quantitative evaluation index for the anti-pilling performance of the fabric and reducing subjective rating errors.

[0019] The clamping device allows for rapid, stepless adjustment of height and position, and the pressure head can be easily replaced to adapt to different fabric materials. The negative pressure collection system is linked to the testing unit, enabling one-button start and stop. The detachable enclosure further enhances the flexibility of protection. The overall design makes the equipment more suitable for quality inspection and R&D scenarios that require frequent and diverse testing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the horizontal quick clamp, clamping assembly, experimental roller, and negative pressure directional fluff collection module of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the suction port, negative pressure pump, and filter and storage unit in the negative pressure directional fluff collection module of the present invention.

[0025] Figure 5 This is a bottom view of the directional collection trough structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the horizontal quick clamp and clamping assembly structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the disassembled structure of the horizontal quick clamp and clamping assembly of the present invention.

[0028] Figure 8 This is a schematic cross-sectional view of the filter and floss storage unit of the present invention.

[0029] Figure 9 This is a schematic diagram of another embodiment of the present invention.

[0030] Drawing number descriptions: 1. Machine body; 2. Worktable; 3. Horizontal quick clamp; 31. Support bracket; 32. Handle linkage; 33. Driven linkage; 34. Clamping arm; 341. Movable groove; 342. Scale line; 343. Rotary locking sleeve; 4. Clamping assembly; 41. Adjusting screw; 411. Internal threaded hole; 412. Positioning pin; 42. Fastening pressure head; 421. External threaded connector; 5. Experimental roller body; 51. Drive assembly; 6. Negative pressure directional lint collection module; 61. Guide channel; 62. Directional collection trough; 621. Material guide surface; 63. Negative pressure adsorption component; 631. Suction port; 632. Negative pressure pump; 64. Sealing strip; 65. Flexible anti-scattering strip; 66. Filter lint storage unit; 661. Transparent filter box; 662. Flexible hose; 663. Filter screen; 7. Enclosure; 71. Auxiliary suction port; 21. Installation position; 22. Scale markings; 25. Lint drop hole. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0033] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0035] Please see Figure 1 - Figure 9The fabric fabric lint testing machine of this application includes a machine body 1, a worktable 2, a fabric clamping device, a test roller 5, and a negative pressure directional lint collection module 6.

[0036] The main body 1, serving as the supporting frame for the entire device, is typically constructed from welded or assembled steel profiles, with internal space reserved for installing the drive assembly 52 and the collection module. The worktable 2, fixed to the top of the main body 1, is preferably made of smooth, corrosion-resistant stainless steel and is used to support the fabric sample to be tested. The surface of the worktable 2 may have mounting positions 21 for positioning and installing the fabric clamping device, as well as scale markings 22 for assisting in placing the fabric, such as in the length and width directions. A long, narrow clearance opening is provided in the middle of the worktable 2 along its length to accommodate the test roller 5. Several small lint-collecting holes 25 are also provided in the area of ​​the worktable that does not contact the test roller 5, allowing lint not directly carried down by the test roller 5 to fall into the collection area below.

[0037] The fabric clamping device is installed on the workbench 2 to reliably press and fix the flattened fabric sample on the workbench 2, ensuring that the fabric will not slip or wrinkle during the test. The fabric clamping device adopts a horizontal quick clamp 3, the structure of which includes a support bracket 31, a handle connecting rod 32, a driven connecting rod 33, and a clamping arm 34. The support bracket 31 is fixed on the mounting position 21 of the workbench 2. It has two hinge points, which are respectively hinged to one end of the handle connecting rod 32 and the driven connecting rod 33. The other end of the two connecting rods is coaxially hinged to the clamping arm 34, forming a force-saving lever amplification mechanism.

[0038] The clamping assembly 4 is driven by the horizontal quick clamp 3. Specifically, the clamping assembly 4 includes an adjusting screw 41 and a fastening head 42. The adjusting screw 41 vertically passes through an elongated movable slot 341 on the clamping arm 34. A wing-shaped locking nut and a wing-shaped support nut are screwed onto the adjusting screw 41 on the upper and lower sides of the movable slot 341, respectively. By manually tightening or loosening these wing nuts, the adjusting screw 41 can be quickly positioned vertically without tools, thereby adjusting the height of the fastening head 42 from the worktable surface 2 to accommodate fabric samples of different thicknesses. The side wall of the movable slot 341 is provided with graduation lines 342. The mounting base of the adjusting screw 41 can slide left and right within the movable slot 341 and is precisely positioned and locked using the graduation lines 342. This ensures that the clamping position is completely consistent each time multiple parallel experiments are conducted, improving the reproducibility of the experiments. To further enhance the locking effect, a rotating locking sleeve 343 can be provided on the upper side of the movable groove 341 for further tightening after the wing nut is locked.

[0039] To address the limitations of general-purpose equipment in clamping fabrics of varying widths, thicknesses, and materials with inconsistent pressure, a clamping assembly 4, featuring adjustable height, lateral movement, and interchangeable pressure heads of different materials, achieves adaptive and standardized clamping for various fabric samples, ensuring uniformity and reproducibility of testing conditions. Specifically, the detachable structure 43 includes an external threaded connector 421 at the top of the clamping pressure head 42 and an internal threaded hole 411 at the bottom of the adjusting screw 41. Quick assembly is achieved by screwing the external threaded connector 421 into the internal threaded hole 411. To accommodate frequent changes in the clamping pressure head 42 of different materials during experiments and to prevent relative rotation due to force during clamping, a pin hole 432 is radially provided at the junction of the external threaded connector 421 and the internal threaded hole 411. After the clamping pressure head 42 is tightened to the appropriate position, inserting a positioning pin 412 into the pin hole 432 effectively prevents loosening during operation.

[0040] The test roller 5 is the core component for performing friction tests. Its two ends are rotatably mounted below or to the side of the worktable 2 via bearings. Its drive assembly 51, such as a motor, reducer, and transmission belt, is typically installed inside the machine body 1. A portion of the circumferential surface of the test roller 5 protrudes from a clearance opening in the worktable 2 to contact the fabric sample placed on the worktable 2. The surface of the test roller 5 is specially treated or coated with standard friction materials, such as specific grades of sandpaper, wool felt, or rubber, thus achieving a set, reproducible coefficient of friction. The drive assembly 51 drives the test roller 5 to reciprocate at a set speed, such as reciprocating speed or linear velocity, in a controllable manner, thereby simulating the frictional action on the fabric surface during actual wear or use.

[0041] The negative pressure directional lint collection module 6 is integrated inside the machine body 1 and located directly below the test roller 5. Its core function is to collect lint rubbed off the surface of the fabric by the test roller 5 in real time and synchronously during the friction test, preventing it from scattering. This module is electrically connected to the drive component 51 that drives the test roller 5, realizing linkage control. Furthermore, the negative pressure directional lint collection module 6 may include a guide channel 61, a directional collection groove 62, a negative pressure adsorption component 63, and a filter and lint storage unit 66. The guide channel 61 has an arc-shaped groove at its inlet, which is adapted to be located directly below the test roller 5, and the directional collection groove 62 is connected to the outlet of the guide channel 61. The directional collection groove 62 is preferably designed as a drawer-type structure that can be pulled out from the side of the machine body 1 for easy cleaning and maintenance. The bottom of the groove is designed with a guide surface 621 that is inclined towards the suction port 631, using gravity to assist the lint to slide towards the collection point. At the upper edge of the guide channel 61 near the entrance of the experimental roller 5, corresponding to both sides of the working part of the experimental roller 5, a flexible anti-scattering strip 65, such as a silicone strip or a bristle strip, is provided. Fixed to the upper edge of the guide channel 61 entrance by a slot, the two ends of the flexible anti-scattering strip 65 terminate near the roller shaft seat. Its working part lightly abuts against the bottom of the worktable 2 or the non-contact part of the experimental roller 5, forming two soft sealing strips extending axially along the roller body. This allows the experimental roller 5 to rotate while effectively preventing sucked-in lint from escaping through the main gap between the roller body and the worktable. A sealing strip 64 is provided between the guide channel 61 and the inner wall of the machine body 1 to ensure the effectiveness of the suction negative pressure.

[0042] The negative pressure adsorption assembly 63 includes a suction port 631, a negative pressure pump 632 (such as an oil-free diaphragm vacuum pump), and a linkage control circuit. The linkage control circuit includes a time relay and a contactor. When the drive motor of the experimental roller 5 starts, the negative pressure pump 632 is simultaneously energized. After the test, the time relay disconnects the power to the negative pressure pump 632 after a 10-second delay (not shown in the figure). The suction port 631 is connected to the end of the directional collection tank 62 via a pipe. Specifically, the suction port 631 is fixed inside the machine body 1 by a bracket. The linkage control circuit is configured to synchronize the start and stop of the negative pressure pump 632 with the drive assembly 51 of the experimental roller 5, or to delay the shutdown of the negative pressure pump 632. That is, when the operator starts the test program and the experimental roller 5 begins to rotate, the negative pressure pump 632 starts automatically; after the test ends and the experimental roller 5 stops, the negative pressure pump 632 can be delayed for a few seconds to remove residual lint from the pipeline. This linkage ensures complete synchronization between the collection action and the test action, requiring no manual intervention and is energy-efficient.

[0043] The lint collection unit 66 is connected to the airflow path of the negative pressure adsorption component 63 to intercept and store collected lint. The air inlet of the lint collection unit 66 is detachably connected to the outlet of the negative pressure adsorption component 63 via a flexible hose 662, preferably using a quick-connect connector. The lint collection unit 66 is located in a matching slot on the front panel of the main body 1 and is a transparent filter box that can be independently removed from the main body 1. The box contains a filter 663, such as a metal or nylon filter, for intercepting lint. The transparent design allows operators to visually observe the amount of lint collected without opening the equipment, facilitating the assessment of test progress and results.

[0044] In another embodiment, a fence 7 is also included. For example... Figure 8 As shown, the enclosure 7 is detachably placed on the platform surrounding the machine body 1, encircling the test roller 5 to prevent lint from scattering during the friction test. The enclosure 7 has an auxiliary suction port 71, which can be connected to the negative pressure directional lint collection module 6 via a pipeline. The enclosure 7 can be made of transparent acrylic or polycarbonate sheets for easy observation. Its edges can be fitted with elastic sealing strips, such as silicone strips (not specifically shown in the figure), which, when placed on the platform, form a good seal with the worktable 2, effectively preventing lint from escaping. The auxiliary suction port 71 can further extract lint scattered inside the enclosure 7, enhancing the collection effect. This detachable structure facilitates cleaning and maintenance after operation and allows for flexible use in different testing scenarios.

[0045] Working principle During operation, place the equipment on a stable workbench and connect the power supply. Select the appropriate friction material for the surface of the test roller 5 and the fastening pressure head 42 according to the test standards or experimental requirements, and install them in place. Install the filter and storage unit 66 of the negative pressure directional fluff collection module 6, ensuring that all connecting pipes are sealed.

[0046] Operate the horizontal quick clamp 3 by lifting the handle of the lever 32, which, through lever transmission, raises and opens the clamping arm 34. Lay the cut fabric sample flat on the worktable 2, typically aligning the area to be tested with the test roller 5 below. Based on the sample size and clamping requirements, adjust the clamping point position by sliding the adjusting screw 41 left or right according to the scale line 342, and adjust the height of the fastening pressure head 42 up or down using the wing nut, ensuring it approaches but does not contact the fabric. Then, press down the handle of the lever 32, driving the clamping arm 34 to move the fastening pressure head 42 downwards, pressing the fabric sample flat and firmly onto the worktable 2. Insert the positioning pin 412 to prevent the pressure head from rotating.

[0047] If equipped with a barrier 7, place it on the outer perimeter of the machine body 1, surrounding the area of ​​the test roller 5. Set the test parameters on the control panel of the equipment, such as the reciprocating speed, number of friction cycles, number of rotations, or time of the test roller 5. Start the test program. At this time, the drive assembly 51 begins to drive the test roller 5 to reciprocate according to the set mode, rubbing the fixed fabric above. At the same time, the linkage control circuit automatically starts the negative pressure pump 632 of the negative pressure adsorption assembly 63.

[0048] During the friction process, the surface of the experimental roller 5 hooks out and breaks the fibers of the fabric, producing fuzz, or napping. Some of the shed fuzz falls directly into the fuzz-collecting holes 25 on the worktable 2, while most is carried into the space below as the experimental roller 5 rotates. The suction generated by the negative pressure pump 632 acts on the directional collection tank 62 and the guide channel 61 through the suction port 631. Guided by the suction and the guide channels 61 and directional collection tank 62, all the shed and scattered fuzz is forcibly sucked in and flows along the guide surface 621 to the suction port 631. The flexible anti-scattering strip 65 effectively prevents airflow disturbance during the suction process from causing fuzz to overflow. The airflow containing fuzz enters the filter and fuzz storage unit 66 through the hose 662. The filter screen 663 intercepts all the fuzz and stores it in a transparent box, while clean air is discharged through the negative pressure pump 632.

[0049] After reaching the set number of friction cycles, the drive assembly 51 automatically stops, and the test roller 5 stops rotating. The negative pressure pump 632 automatically shuts down according to the settings of the linkage control circuit, such as synchronous stopping or delayed shutdown, to ensure that residual lint in the pipeline is completely sucked up. The enclosure 7 and quick clamps are opened, and the rubbed fabric sample is removed. Its surface fuzzing condition can be immediately visually rated or analyzed using instruments. The transparent filter and lint storage unit 66 is removed from the machine body 1, and the amount of lint collected is directly observed and weighed as an objective and accurate indicator for quantitatively evaluating the lint resistance of the fabric; for example, less lint indicates better lint resistance. The collection box is easy to clean, facilitating the next test.

[0050] In summary, this invention, by highly integrating a standardized friction testing mechanism with a real-time linked negative pressure directional collection system, not only achieves a scientific evaluation of the fuzzing performance of greige fabric, but also solves the problem of fuzz contamination during the testing process. This greatly improves the reliability of the equipment, the cleanliness of the experimental environment, and the ease of operation, making it particularly suitable for quality inspection, R&D, and teaching scenarios that require a large number of repetitive, high-standard tests.

[0051] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A billet fabrication testing machine, characterized in that, include: The body (1) serves as the supporting frame for the equipment; The workbench (2) is fixed to the top of the machine body (1) and is used to support the fabric to be tested; A fabric clamping device is installed on the workbench (2) to press and fix the fabric to the workbench (2). The fabric clamping device includes a horizontal quick clamp (3) and a clamping assembly (4). The clamping assembly (4) is installed on the horizontal quick clamp (3) through a movable adjustment structure. The experimental roller (5) is driven by the drive assembly (51) and rotatably mounted on the worktable (2) via the bearing seat. The worktable (2) has a clearance opening in the middle position. The circumferential surface of the experimental roller (5) protrudes from the clearance opening. The surface of the experimental roller (5) has a set friction coefficient to cooperate with the fabric clamping device to perform controllable reciprocating rolling friction on the fabric fixed on the worktable (2). The negative pressure directional fluff collection module (6) is integrated inside the body (1) and located in the area below the experimental roller (5). The negative pressure directional fluff collection module (6) is electrically connected to and linked with the drive component (51) that drives the experimental roller (5) to synchronously adsorb and collect fluff that falls off the surface of the fabric during the friction test.

2. The billet fabrication testing machine according to claim 1, characterized in that: The negative pressure directional fluff collection module (6) includes a guide channel (61), a directional collection groove (62), a negative pressure adsorption component (63), and a filter and fluff storage unit (66). The guide channel (61) has an arc-shaped groove at its inlet, which is adapted to be located directly below the experimental roller (5). The directional collection groove (62) is connected to the outlet of the guide channel (61). The suction port (631) of the negative pressure adsorption component (63) is connected to the end of the directional collection groove (62). The filter and fluff storage unit (66) is connected to the airflow path of the negative pressure adsorption component (63).

3. The billet fabrication testing machine according to claim 2, characterized in that: The directional collection trough (62) is a drawer-type structure that can be pulled out from the side of the machine body (1). The bottom of the trough has a guide surface (621) that is inclined towards the suction port (631). The guide channel (61) is close to the upper edge of the entrance of the experimental roller body (5). At least two flexible anti-drift strips (65) are symmetrically arranged on both sides of the working part of the experimental roller body (5). The inner end of the flexible anti-drift strip (65) is close to the roller body shaft seat. The directional collection trough (62) and the outlet of the guide channel (61) cooperate to achieve close contact.

4. The billet fabrication testing machine according to claim 2, characterized in that: The negative pressure adsorption assembly (63) also includes a negative pressure pump (632) and a linkage control circuit. The linkage control circuit is configured to synchronize the start and stop of the negative pressure pump (632) with the drive assembly (51) of the experimental roller (5), or to delay the shutdown of the negative pressure pump (632).

5. The billet fabrication testing machine according to claim 2, characterized in that: The air inlet of the filter and lint storage unit (66) is detachably connected to the outlet of the negative pressure adsorption component (63) via a flexible hose (662). The hose (662) interface is fitted with a quick-connect connector. The filter and lint storage unit (66) is located in a matching groove on the front panel of the body (1) and is a transparent filter box (661) that can be independently removed from the body (1). The filter and lint storage unit (66) is equipped with a filter (663) for intercepting lint. A sealing strip (64) is provided between the guide channel (61) and the inner wall of the body (1).

6. The billet fabrication testing machine according to claim 1, characterized in that: The fabric clamping device adopts a horizontal quick clamp (3), the structure of which includes a support bracket (31), a handle connecting rod (32), a driven connecting rod (33) and a clamping arm (34). The support bracket (31) is provided with a double hinge point, which is hinged to one end of the handle connecting rod (32) and the driven connecting rod (33) respectively. The other end of the two connecting rods is coaxially hinged to the clamping arm (34). The clamping assembly (4) includes an adjusting screw (41) and a fastening pressure head (42). The adjusting screw (41) vertically passes through the movable groove (341) of the clamping arm (34). The upper and lower sides of the movable groove (341) are respectively provided with a butterfly locking nut and a butterfly support nut. The butterfly locking nut and the butterfly support nut cooperate to realize the up and down positioning of the adjusting screw (41) and provide manual tool-free quick adjustment.

7. The billet fabrication testing machine according to claim 6, characterized in that: The side wall of the movable groove (341) is provided with scale lines (342). The adjusting screw (41) can move left and right along the movable groove (341) and achieve precise positioning with the help of the scale lines (342) to ensure the consistency of clamping position of multiple sets of experiments. The upper side of the movable groove (341) is also provided with a rotating locking sleeve (343) to help enhance the locking effect.

8. The billet fabrication testing machine according to claim 6, characterized in that: The fastening head (42) is connected to the bottom end of the adjusting screw (41) via a detachable structure. The detachable structure includes an external threaded connector (421) at the top of the fastening head (42) and an internal threaded hole (411) at the bottom of the adjusting screw (41). The external threaded connector (421) and the internal threaded hole (411) are screwed together to achieve quick assembly. A pin hole is provided radially at the junction of the external threaded connector (421) and the internal threaded hole (411). A positioning pin (412) is inserted into the pin hole to prevent relative rotation due to force during clamping, so as to meet the need for frequent replacement of fastening heads (42) of different materials in the experiment.

9. The billet fabrication testing machine according to claim 1, characterized in that: The workbench (2) is a stainless steel workbench, and its surface is provided with mounting position (21) for positioning the fabric clamping device and scale marking (22). The workbench (2) has a shedding hole (25) in the non-contact area with the experimental roller (5).

10. The billet fabrication testing machine according to any one of claims 1-9, characterized in that: It also includes a barrier (7), which is detachably placed on a platform set on the outer periphery of the machine body (1) and surrounds the experimental roller (5) to prevent the fluff from scattering during the friction test. The barrier (7) is provided with an auxiliary suction port (71), which is connected to the negative pressure directional fluff collection module (6) through a pipeline.

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