CN216978314U - Chemical fiber filament gas false twister detector - Google Patents
Chemical fiber filament gas false twister detector Download PDFInfo
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- CN216978314U CN216978314U CN202123011291.9U CN202123011291U CN216978314U CN 216978314 U CN216978314 U CN 216978314U CN 202123011291 U CN202123011291 U CN 202123011291U CN 216978314 U CN216978314 U CN 216978314U
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Abstract
The utility model discloses a chemical fiber filament air false twister detector, wherein an airflow input hole and a vortex airflow hole communicated with the airflow input hole are arranged on a false twister; the false twister vortex airflow failure detection analyzer comprises a detection workbench, a constant pressure air supply pipeline, a detection control box, a three-coordinate moving mechanism, a display and a positioning device, wherein the three-coordinate moving mechanism, the display and the positioning device are respectively arranged on the detection workbench; the three-coordinate moving mechanism is provided with a pneumatic nozzle, a constant-pressure air supply pipeline is connected with the pneumatic nozzle, the pneumatic nozzle is used for being connected with an airflow input hole of the false twister during detection, the positioning device is provided with a plurality of positioning holes in an array arrangement mode, and the false twister is positioned in the positioning holes; the flowmeter is arranged on the constant-pressure air supply pipeline, and the display and the flowmeter are respectively connected with the detection control box. The utility model improves the efficiency and the accuracy of the detection of the vortex airflow hole on the false twister and ensures the working characteristic of the vortex airflow of the false twister.
Description
Technical Field
The utility model relates to the technical field of quality detection of false twisters, in particular to a chemical fiber filament gas false twister detector.
Background
FIG. 5 shows a novel false twister for use in a chemical fiber production line, which comprises a false twisting shaft, an air input hole provided on the false twisting shaft, and a threading through hole vertically connected to the air input hole, the through hole being connected to one side of the air input hole in an offset manner; when the device works, a plurality of chemical fiber filaments penetrate into the through hole, compressed air with certain pressure is introduced from the airflow input hole at the upper end of the false twisting shaft, and the compressed air enters the through hole to form a rotating vortex airflow due to the fact that the through hole is connected to one side of the airflow input hole in an offset mode, so that the through hole is also called as a vortex airflow hole. The compressed air entering the vortex airflow hole drives the chemical fiber filaments to rotate after forming vortex airflow, so that the chemical fiber filaments are twisted together in the vortex airflow hole to form false twisting. The vortex air flow is discharged from both ends of the vortex air flow hole after the false twisting is completed.
The novel false twister is a core element on a chemical fiber production line, and the quality of the false twister directly influences the quality of false twisting of chemical fiber filaments. As ten thousand false twisters are usually arranged on a chemical fiber production line, high-quality products can be produced only by ensuring that all the false twisters are qualified. The vortex airflow holes of the false twister can be adhered with foreign matters or unevenly worn after the false twister is used for a period of time, and the vortex airflow is abnormal when the false twister works no matter the foreign matters are adhered or the uneven wear occurs, so that the normal work of the false twister is influenced.
For this reason, the shape and size of the swirl air holes in the false twister need to be checked to ensure that the false twister has good swirl air characteristics. If the shape and the size of the vortex airflow hole of the false twister are detected according to the traditional method, the detection efficiency is low, and the detection accuracy is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a chemical fiber filament yarn gas false twister detector, aiming at improving the efficiency and the accuracy of detecting a vortex airflow hole on a false twister and ensuring the working characteristic of vortex airflow of the false twister. The specific technical scheme is as follows:
a detector for a chemical fiber filament gas false twister is characterized in that an airflow input hole and a vortex airflow hole which is communicated with the airflow input hole and is used for realizing false twisting operation are formed in the false twister; the detection and analysis machine for the vortex air flow failure of the false twister comprises a detection workbench, a constant-pressure air supply pipeline, a detection control box, a three-coordinate moving mechanism, a display and a positioning tray, wherein the three-coordinate moving mechanism, the display and the positioning tray are respectively arranged on the detection workbench; the three-coordinate moving mechanism is provided with a pneumatic nozzle, the constant-pressure air supply pipeline is connected with the pneumatic nozzle, the pneumatic nozzle is used for being connected with an airflow input hole of the false twister during detection, the positioning tray is provided with a plurality of positioning holes in an array arrangement mode, and the false twister is positioned in the positioning holes; the constant pressure air supply pipeline is provided with a flowmeter, and the display and the flowmeter are respectively connected with the detection control box.
In the utility model, the three-coordinate moving mechanism comprises a workbench guide rail arranged on the detection workbench along the front-back direction, a cross beam movably arranged on the workbench guide rail, a cross beam guide rail arranged on the cross beam, a test cylinder movably arranged on the cross beam guide rail and vertically arranged downwards, and the pneumatic nozzle is arranged at the lower end of a telescopic part of the test cylinder.
The three-coordinate moving mechanism enables the pneumatic nozzle to have X, Y, Z three moving directions so as to be convenient for the pneumatic nozzle to be accurately butted with the airflow input hole of the false twister during testing.
Preferably, the detection workbench is provided with at least one pair of positioning pins, and the positioning tray is positioned on the detection workbench through the positioning pins.
Preferably, the positioning pin is a conical positioning pin.
According to the utility model, the detection workbench is also provided with a pressing cylinder, a piston rod of the pressing cylinder is provided with a pressing plate, and the positioning tray is positioned by the positioning pin and then pressed on the detection workbench by the pressing plate on the pressing cylinder.
In the utility model, a feeding and discharging workbench is arranged beside the detection workbench, and a feeding station and a discharging station are arranged on the feeding and discharging workbench; the discharging fixture comprises a discharging bottom plate arranged on the discharging station and a plurality of ejector pins fixed on the discharging bottom plate, wherein the plurality of ejector pins are arranged on the discharging bottom plate in an array arrangement mode; the array arrangement mode of the ejector pins on the discharging bottom plate is consistent with the array arrangement mode of the positioning holes on the positioning tray so as to realize the simultaneous ejection of each false twister in the positioning tray.
During operation, after the positioning tray is placed on the unloading clamp, the ejector pin can eject the false twister upwards for a certain distance, so that the false twister is convenient to take; because the positioning tray is arranged in an integer array, the positioning tray can be easily identified and is convenient to take, and the working efficiency is favorably improved.
In order to facilitate operators to better identify unqualified false twisters on the positioning tray, a plurality of display subareas which are used for displaying the air flow condition of each false twister in the positioning tray are arranged on the display in an array mode, and the array arrangement mode of the display subareas on the display is consistent with the array arrangement mode of the positioning holes on the positioning tray so as to realize the one-to-one correspondence between the false twisters at corresponding positions in the positioning tray and the actual air flow condition displayed by each display subarea.
Preferably, when the air flow data of the false twister accords with a preset range value, the vortex air flow of the false twister is qualified, and the corresponding display subarea of the vortex air flow is displayed as green; when the air flow data of the false twister exceeds the preset range value, the vortex air flow of the false twister is unqualified, and the corresponding display subarea is displayed in red.
The display subareas with two different colors are arranged on the display, so that the screening and the elimination of the unqualified false twisters on the positioning tray are facilitated for operators.
Preferably, the air flow data of the corresponding false twister can be displayed in each display region.
Preferably, the false twister vortex air flow failure detection analysis is arranged after the false twister is cleaned, and the positioning tray is a cleaning and detecting dual-purpose tray. When the positioning tray is used, the false twister is placed on the positioning tray, then the positioning tray is transferred to a cleaning station to clean and dry the false twister, and then the detection and analysis of the vortex airflow failure of the false twister are carried out on a detection workbench of a vortex airflow failure detection and analysis machine of the transfer false twister of the positioning tray.
Preferably, the constant-pressure gas supply pipeline is provided with a regulating valve for regulating the flow of the air-borne gas on the constant-pressure gas supply pipeline.
In the utility model, the false twister comprises a false twisting shaft, the vortex airflow hole penetrates through the lower part of the false twisting shaft and is vertical to the axial direction of the false twisting shaft, the airflow input hole is arranged in the axial direction of the false twisting shaft and is communicated with the vortex airflow hole, and the vortex airflow hole is connected to one side edge of the lower part of the airflow input hole in a biased manner to form vortex airflow for false twisting operation.
In the utility model, a cutting seam communicated with the vortex airflow hole is arranged on the false twisting shaft.
In the present invention, the array arrangement is preferably a matrix array arrangement.
In the utility model, the constant-pressure air supply pipeline is also provided with a pressure controller and an oil and water removing valve bank for stabilizing the pipeline pressure and removing oil and water.
The using method of the utility model is as follows:
(1) positioning a false twister: the operator places the false twisters one by one on the positioning tray;
(2) cleaning a false twister: transferring the positioning tray provided with the false twister to cleaning equipment for cleaning and drying; after the false twister is cleaned, the positioning tray can be transferred to a feeding and discharging workbench of a vortex airflow failure detection analyzer of the false twister for temporary storage;
(3) installing and positioning a false twister: after the false twister is cleaned, the positioning tray is transferred to a false twister vortex airflow failure detection analyzer, the positioning tray is positioned with a detection workbench through a positioning pin, then a start key on a detection control box is started, the positioning tray is pressed by four pressing cylinders, and magnetic switches of the four pressing cylinders are all on, so that the positioning tray is placed normally;
(4) false twister test: after the positioning tray is confirmed to be placed normally, the machine starts automatic testing; the three-coordinate moving mechanism of the machine tests each false twister one by butting the pneumatic nozzle with the airflow input hole of the false twister on the positioning tray according to the XY fixed length rule; when one false twister is tested, the gas flow data of the false twister is displayed on the display in real time until all the false twisters on the positioning tray are tested; wherein the gas flow data with the red background is an unqualified false twister;
(5) unloading and screening: placing the tested positioning tray on an unloading clamp, and ejecting the false twister upwards from the positioning tray through an ejector pin of the unloading clamp; the operator rejects the unqualified false twister according to the prompt of the display:
(6) and (3) continuous detection: when the false twister on one positioning tray is tested, repeating the steps (3) to (5) to test when the next positioning tray is put in again; before the test, the test data of the false twister on the last positioning tray is automatically cleared.
The utility model has the beneficial effects that:
firstly, the gas false twister detector for the chemical fiber filament yarns judges whether vortex airflow holes in the false twister are qualified or not by testing the airflow data of the false twister, can detect whether foreign matter adhesion or uneven wear of the vortex airflow holes in the false twister exists, and has better detection convenience and higher accuracy compared with a conventional size and shape detection method.
Secondly, according to the chemical fiber filament air false twister detector, the pneumatic nozzle is arranged on the three-coordinate moving mechanism, so that the centralized automatic detection of the false twister is realized, the detection efficiency is further improved, and the error caused by artificial detection can be avoided.
Thirdly, according to the chemical fiber filament yarn gas false twister detector, the display areas with two different colors are arranged on the display, so that operators can conveniently screen and remove unqualified false twisters on the positioning tray.
Fourthly, the positioning tray is a cleaning and detecting dual-purpose tray, vortex airflow failure detection and analysis of the false twister are arranged after the false twister is cleaned, and the false twister does not need to be taken down from the positioning tray after being cleaned, so that the tooling cost can be saved, the cost is reduced, and the production efficiency can be greatly improved.
Drawings
FIG. 1 is a schematic three-dimensional structure of a chemical fiber filament pneumatic false twister detector according to the present invention;
FIG. 2 is a schematic plan view of a chemical fiber filament pneumatic false twister detector according to the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic diagram of setting up display sub-regions on a display;
FIG. 5 is a schematic view of the construction of a false twister.
In the figure: 1. the device comprises an airflow input hole, 2, a vortex airflow hole, 3, a detection workbench, 4, a constant-pressure air supply pipeline, 5, a detection control box, 6, a three-coordinate moving mechanism, 7, a display, 8, a false twister, 9, a positioning tray, 10, a pneumatic nozzle, 11, a positioning hole, 12, a flowmeter, 13, a workbench guide rail, 14, a cross beam, 15, a cross beam guide rail, 16, a testing cylinder, 17, a positioning pin, 18, a pressing cylinder, 19, a pressing plate, 20, a loading and unloading workbench, 21, a loading station, 22, a blanking station, 23, an unloading clamp, 24, an unloading bottom plate, 25, a top pin, 26, a display subarea, 27, a regulating valve, 28, a false twisting shaft, 29 and a slit.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in FIGS. 1 to 5, an embodiment of the detector for the chemical fiber filament air false twister of the utility model is provided, wherein the false twister 8 is provided with an air flow input hole 1 and a vortex air flow hole 2 communicated with the air flow input hole 1 and used for realizing false twisting operation; the false twister vortex airflow failure detection analyzer comprises a detection workbench 3, a constant-pressure air supply pipeline 4, a detection control box 5, a three-coordinate moving mechanism 6, a display 7 and a positioning tray 9, wherein the three-coordinate moving mechanism 6, the display 7 and the positioning tray 9 are respectively arranged on the detection workbench 3; the three-coordinate moving mechanism 6 is provided with a pneumatic nozzle 10, the constant-pressure air supply pipeline 4 is connected with the pneumatic nozzle 10, the pneumatic nozzle 10 is used for being connected with an airflow input hole 1 of the false twister 8 during detection, a plurality of positioning holes 11 are formed in the positioning tray 9 in an array arrangement mode, and the false twister 8 is positioned in the positioning holes 11; the constant pressure air supply pipeline 4 is provided with a flowmeter 12, and the display 7 and the flowmeter 12 are respectively connected with the detection control box 5.
In this embodiment, the three-coordinate moving mechanism 6 includes a table rail 13 disposed on the detection table 3 in the front-rear direction, a beam 14 movably disposed on the table rail 13, a beam rail 15 disposed on the beam 14, a test cylinder 16 movably disposed on the beam rail 15 and vertically disposed downward, and the pneumatic nozzle 10 is disposed at the lower end of a telescopic member of the test cylinder 16.
The three-coordinate moving mechanism 6 described above allows the pneumatic nozzle 10 to have X, Y, Z three directions of movement to facilitate accurate docking of the pneumatic nozzle 10 with the air stream input port 1 of the false twister 8 during testing.
Preferably, at least one pair of positioning pins 17 are arranged on the detection workbench 3, and the positioning tray 9 is positioned on the detection workbench 3 through the positioning pins 17.
Preferably, the positioning pin 17 is a conical positioning pin.
In this embodiment, the detection workbench 3 is further provided with a pressing cylinder 18, a piston rod of the pressing cylinder 18 is provided with a pressing plate 19, and the positioning tray 9 is positioned by the positioning pin 17 and then pressed on the detection workbench 3 by the pressing plate 19 on the pressing cylinder 18.
In this embodiment, a feeding and discharging worktable 20 is further arranged beside the detection worktable 3, and the feeding and discharging worktable 20 is provided with a feeding station 21 and a discharging station 22; the unloading fixture 23 is used for ejecting the false twister 8 in the positioning hole 11 of the positioning tray 9 to be convenient to take and is arranged on the unloading station 22 of the loading and unloading workbench 20, the unloading fixture 23 comprises an unloading bottom plate 24 arranged on the unloading station 22 and a plurality of top pins 25 fixed on the unloading bottom plate 24, and the plurality of top pins 25 are arranged on the unloading bottom plate 24 in an array manner; the array arrangement of the top pins 25 on the discharge bottom plate 24 is consistent with the array arrangement of the positioning holes 11 on the positioning tray 9 so as to realize the simultaneous ejection of the false twisters 8 in the positioning tray 9.
During operation, after the positioning tray 9 is placed on the discharging clamp 23, the ejector pin 25 can eject the false twister 8 upwards for a certain distance, so that the false twister is convenient to take; because the positioning tray 9 is arranged for integer array, the positioning tray can be easily identified and is convenient to take, and the working efficiency is favorably improved.
In order to facilitate an operator to better identify unqualified false twisters 8 on the positioning tray 9, a plurality of display sub-areas 26 for displaying the air flow rate condition of each false twister 8 in the positioning tray 9 are arranged on the display 7, the plurality of display sub-areas 26 are arranged on the display 7 in an array mode, and the array arrangement mode of the display sub-areas 26 on the display 7 is consistent with the array arrangement mode of the positioning holes 11 on the positioning tray 9, so that the false twisters 8 at corresponding positions in the positioning tray 9 correspond to the actual air flow rate condition displayed by each display sub-area 26 one by one.
Preferably, when the air flow data of the false twister 8 accords with the preset range value, the vortex air flow of the false twister 8 is qualified, and the corresponding display subarea 26 is displayed as green; when the air flow data of the false twister 8 exceeds the preset range value, the vortex air flow of the false twister 8 is unqualified, and the corresponding display subarea 26 is displayed in red.
By arranging two display subareas 26 with different colors on the display 7, the screening and the rejection of unqualified false twisters 8 on the positioning tray 9 are facilitated for operators.
Preferably, the air flow data of the corresponding false twister 6 can also be displayed in each display subarea 26.
Preferably, the false twister 8 vortex air flow failure detection analysis is arranged after the false twister 8 is cleaned, and the positioning tray 9 is a cleaning and detecting dual-purpose tray. When the positioning tray 9 is used, the false twister 8 is firstly placed on the positioning tray 9, then the positioning tray 9 is transferred to a cleaning station to clean and dry the false twister 8, and then the positioning tray 9 is transferred to the detection workbench 3 of the false twister vortex airflow failure detection analyzer to detect and analyze vortex airflow failure of the false twister 8.
Preferably, the constant pressure gas supply line 4 is provided with an adjusting valve 27 for adjusting the flow rate of the air-supported gas in the constant pressure gas supply line 4.
In this embodiment, the false twister 8 comprises a false twisting shaft 28, the vortex airflow hole 2 penetrates through the lower part of the false twisting shaft 28 and is perpendicular to the axial direction of the false twisting shaft 28, the airflow input hole 1 is arranged in the axial direction of the false twisting shaft 28 and is communicated with the vortex airflow hole 2, and the vortex airflow hole 2 is connected to one side of the lower part of the airflow input hole 1 in a biased mode to form vortex airflow for false twisting.
In this embodiment, the false twist shaft 28 is provided with a slit 29 communicating with the vortex airflow hole 1.
In this embodiment, the array arrangement is preferably a matrix array arrangement (in the figure, a 10 × 20 matrix array).
In the utility model, the constant-pressure air supply pipeline 4 is also provided with a pressure controller and an oil and water removing valve group for stabilizing the pipeline pressure and removing oil and water.
The method of use of this example is as follows:
(1) positioning a false twister: the operator places the false twisters 8 one by one onto the positioning tray 9;
(2) cleaning a false twister: transferring the positioning tray 9 provided with the false twister 8 to cleaning equipment for cleaning and drying; after the false twister 8 is cleaned, the positioning tray 9 can be transferred to a feeding and discharging workbench 20 of a false twister vortex airflow failure detection analyzer for temporary storage;
(3) installing and positioning a false twister: after the false twister 8 is cleaned, the positioning tray 9 is transferred to a false twister vortex airflow failure detection analyzer, the positioning tray 9 is positioned with the detection workbench 3 through a positioning pin 17, then a start key on the detection control box 5 is started, the positioning tray 9 is pressed by the four pressing cylinders 18, and magnetic switches of the four pressing cylinders 18 are all bright, which indicates that the positioning tray 9 is normally placed;
(4) false twister test: after the positioning tray 9 is confirmed to be placed normally, the machine starts to automatically test; the three-coordinate moving mechanism 6 of the machine tests each false twister 8 one by butting the pneumatic nozzle 10 against the airflow input hole 1 of the false twister 8 on the positioning tray 9 according to the XY fixed length rule; when one false twister 8 is tested, the gas flow data of the false twister 8 is displayed on the display in real time until all the false twisters 8 on the positioning tray 9 are tested; wherein the gas flow data with red background is the unqualified false twister 8;
(5) unloading and screening: placing the tested positioning tray 9 on the unloading clamp 23, and ejecting the false twister 8 upwards from the positioning tray 9 through the ejector pin 25 of the unloading clamp 23; the operator rejects the unqualified false twister 8 according to the prompt of the display:
(6) and (3) continuous detection: when the false twister 8 on one positioning tray 9 is tested, repeating the steps (3) to (5) for testing after the next positioning tray 9 is put in again; before the test, the test data of the false twister 8 on the last positioning tray 9 is automatically cleared.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The detector is characterized in that an airflow input hole and a vortex airflow hole which is communicated with the airflow input hole and is used for realizing false twisting operation are arranged on the false twister; the chemical fiber filament air false twister detector comprises a detection workbench, a constant-pressure air supply pipeline, a detection control box, a three-coordinate moving mechanism, a display and a positioning tray, wherein the three-coordinate moving mechanism, the display and the positioning tray are respectively arranged on the detection workbench; the three-coordinate moving mechanism is provided with a pneumatic nozzle, the constant-pressure air supply pipeline is connected with the pneumatic nozzle, the pneumatic nozzle is used for being connected with an airflow input hole of the false twister during detection, the positioning tray is provided with a plurality of positioning holes in an array arrangement mode, and the false twister is positioned in the positioning holes; and a flowmeter is arranged on the constant-pressure air supply pipeline, and the display and the flowmeter are respectively connected with the detection control box.
2. The gas false twister detector of claim 1, wherein said three-dimensional moving mechanism comprises a table rail disposed on the detection table in the front-rear direction, a beam movably disposed on said table rail, a beam rail disposed on said beam, a test cylinder movably disposed on said beam rail and vertically disposed downward, and said pneumatic nozzle is disposed at the lower end of the telescopic part of said test cylinder.
3. The pneumatic false twister for chemical fiber filaments as claimed in claim 1, wherein at least one pair of positioning pins is disposed on said detection table, and said positioning tray is positioned on said detection table by said positioning pins.
4. The gas false twister detector of claim 3, wherein said detection table further comprises a pressing cylinder, a piston rod of said pressing cylinder is provided with a pressing plate, and said positioning tray is positioned by said positioning pin and then pressed on said detection table by said pressing plate on said pressing cylinder.
5. The gas false twister detector of claim 1, wherein a loading and unloading workbench is further arranged beside the detection workbench, and a loading station and a unloading station are arranged on the loading and unloading workbench; the discharging fixture comprises a discharging bottom plate arranged on the discharging station and a plurality of ejector pins fixed on the discharging bottom plate, wherein the plurality of ejector pins are arranged on the discharging bottom plate in an array arrangement mode; the array arrangement mode of the ejector pins on the discharge bottom plate is consistent with the array arrangement mode of the positioning holes on the positioning tray so as to realize the simultaneous ejection of all the false twisters in the positioning tray.
6. The gas false twister detector of claim 5, wherein the display is provided with a plurality of display sub-areas for displaying the gas flow of each false twister in the positioning tray, the plurality of display sub-areas are arranged in an array on the display, and the array arrangement of the display sub-areas on the display is consistent with the array arrangement of the positioning holes on the positioning tray so as to realize the one-to-one correspondence between the gas flow of each false twister at each corresponding position in the positioning tray and the actual gas flow displayed by each display sub-area.
7. The pneumatic false twister tester of claim 1, wherein said positioning tray is a cleaning and testing tray.
8. The chemical fiber filament gas false twister detector of claim 1, wherein said constant pressure gas supply line is provided with an adjusting valve for adjusting the flow of air-carrying gas on said constant pressure gas supply line.
9. The pneumatic false twister of claim 1, wherein the false twister comprises a false twisting shaft, the vortex air hole is disposed at a lower portion of the false twisting shaft and perpendicular to an axial direction of the false twisting shaft, the air input hole is disposed at the axial direction of the false twisting shaft and communicated with the vortex air hole, and the vortex air hole is connected to a lower side of the air input hole in an offset manner to form a vortex air flow for false twisting.
10. The pneumatic false twister monitor of claim 9, wherein said false twist shaft is provided with a slit communicating with said vortex air flow hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123011291.9U CN216978314U (en) | 2021-12-02 | 2021-12-02 | Chemical fiber filament gas false twister detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123011291.9U CN216978314U (en) | 2021-12-02 | 2021-12-02 | Chemical fiber filament gas false twister detector |
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| CN216978314U true CN216978314U (en) | 2022-07-15 |
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| CN202123011291.9U Active CN216978314U (en) | 2021-12-02 | 2021-12-02 | Chemical fiber filament gas false twister detector |
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- 2021-12-02 CN CN202123011291.9U patent/CN216978314U/en active Active
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