Textile fiber density detection device and detection method

Abstract

The invention relates to the technical field of textile detection, in particular to a textile fiber density detection device and method. And the detection device comprises a rotating shaft and a thread removing wheel. A connector connected with a sample is arranged at the tail end of the rotating shaft, so that the sample is wrapped and fixed on the connector. And a plurality of stitch removing needles are convexly arranged on the surface of the stitch removing wheel. The stitch removing wheel is arranged at the tail end of the rotating shaft and matched with the sample so that the stitch removing needle can abut against the sample. According to the textile fiber density detection device, the yarn can be conveniently removed through the yarn removing wheel, and detection of the yarn density is facilitated. And meanwhile, in the thread removing process of the thread removing wheel, the rotating shaft also rotates along with the thread removing wheel, so that the thread removing wheel can make contact with all positions of the sample, and complete removal of the yarn is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of textile detection, and in particular to a textile fiber density detection device and a detection method. Background Art

[0002] The warp and weft yarn density of a fabric is an important indicator of the fabric, that is, the fiber density of the textile. There are multiple methods to test the fiber density, one of which is the yarn removal method. That is, take a sample of a textile of a certain size (for example, 10 cm in length and width), remove the warp and weft yarns and count them, and then obtain the warp and weft yarn density.

[0003] The yarn unraveling method calculates the linear density by directly measuring the mass and length of the yarn. This method can provide relatively accurate results when the operating specifications and environmental conditions meet the standards. The yarn unraveling method is applicable to various types of yarns, including cotton, wool, silk, linen, chemical fiber, etc. Whether it is natural fiber or synthetic fiber, the linear density can be measured by the yarn unraveling method. These advantages make it still an important detection method in some specific scenarios, such as occasions with high requirements for detection accuracy and the need to comply with standard detection methods.

[0004] However, the yarn unravelling method is generally operated manually, which is inefficient and complicated to operate. With the development of modern textile industry, its applicability is gradually reduced. Summary of the invention

[0005] The object of the present invention is to provide a textile fiber density detection device and detection method, which can conveniently remove the yarn and facilitate the detection of the fiber density.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A textile fiber density detection device comprises a rotating shaft and a thread removing wheel; a connector for connecting a sample is arranged at the end of the rotating shaft so that the sample is wrapped and fixed on the connector; a plurality of thread removing needles are protruding from the surface of the thread removing wheel; the thread removing wheel is located at the end of the rotating shaft and is arranged in coordination with the sample so that the thread removing needles abut against the sample.

[0008] Furthermore, it also includes an image recognition system for identifying the number of yarns; the image recognition system includes a camera; the shooting direction of the camera points to the sample.

[0009] Furthermore, the rotating shaft is arranged vertically and the lower end is suspended; the connecting head is arranged at the lower end of the rotating shaft; and the thread removing wheel is provided with a lifting mechanism to enable the thread removing wheel to be lifted and lowered relative to the sample.

[0010] Furthermore, it also includes an electrostatic generator; the electrostatic generator is connected to the rotating shaft.

[0011] Furthermore, it also includes a spray head; the spray head is arranged in cooperation with the rotating shaft so that the spray head can be moved to the bottom of the rotating shaft and located inside the sample; a plurality of spray holes are arranged around the spray head.

[0012] Furthermore, it also includes a transverse movement mechanism; the camera and the spray head are both arranged on the transverse movement mechanism, so that the camera and the spray head can follow the transverse movement mechanism to move to the bottom of the rotating shaft.

[0013] Furthermore, the rotating shaft includes an active part and a driven part; the active part is connected to a driving motor; the driven part is connected to the active part through an insulating block; and the electrostatic generator is connected to the driven part.

[0014] Furthermore, a truncated cone-shaped locking platform is provided at the lower end of the rotating shaft; the small-diameter end of the locking platform is connected to the rotating shaft; the connecting head includes a clamping portion and a nut which are sleeved on the outside of the rotating shaft; the inner wall of the clamping section is matched with the locking platform so that the inner wall of the clamping section is attached to the outer wall of the locking platform; the nut is threadedly connected to the outside of the rotating shaft and matched with the clamping portion so that the nut presses the clamping portion onto the locking platform.

[0015] Furthermore, the electrostatic generator is connected to the driven part via a brush.

[0016] A method for detecting fiber density of textiles comprises the following steps:

[0017] S1: Connect the sample to the rotating shaft and remove the excess yarn using the thread removal wheel;

[0018] S2: Turn on the electrostatic generator and open the spray head; the shaft rotates so that the yarns to be tested are distributed radially;

[0019] S3: The camera takes pictures of a number of yarns to be tested and identifies the number of yarns through an image recognition system to obtain the yarn density.

[0020] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0021] When the textile fiber density detection device of the present invention is used, the sample is wrapped at the end of the rotating shaft so that the sample is in a cylindrical shape. At the same time, the thread removing wheel is brought close to the sample and rotated. During the rotation of the thread removing wheel, the thread removing needle penetrates into the fabric and pushes the yarn to the end of the fabric, thereby removing the yarn. Finally, the number of remaining yarns is counted to obtain the yarn density. If the yarn density in the warp direction is measured, the sample is fixed to the rotating shaft so that the warp yarn of the sample is perpendicular to the rotating shaft of the thread removing wheel. Similarly, if the yarn density in the weft direction is measured, the sample is fixed to the rotating shaft so that the weft yarn of the sample is perpendicular to the rotating shaft of the thread removing wheel.

[0022] The textile fiber density detection device of the present invention can conveniently remove the yarn, which is convenient for detecting the yarn density. Meanwhile, during the thread removal process of the thread removal wheel, the rotating shaft also rotates, so that the thread removal wheel can contact all parts of the sample, which is convenient for complete removal of the yarn.

[0023] Combined with the image recognition system, the number of yarns can be easily identified, thereby further reducing the difficulty of manual operation. The static electricity generated by the electrostatic generator makes the remaining yarns charged and spread radially around, which is convenient for identifying the number of yarns. The spray head is set to wet the yarn so that the protruding fiber filaments on the yarn surface adhere to the yarn surface under the action of water, avoiding the protruding fiber filaments from affecting image recognition. At the same time, the wet yarn is heavier, and it can generate greater centrifugal force when the shaft rotates, which is more conducive to the radial separation of the yarn. In addition, the wetting of the yarn is also more conducive to conductivity, so that the fibers with weak conductivity can also be better separated radially under the action of static electricity.

[0024] The lifting mechanism enables the wire removal wheel to be raised and lowered, thereby better covering all parts of the sample. The transverse movement mechanism is set so that the camera and the spray head are located directly below the shaft at different times, and the two do not interfere with each other. The shaft connects the active part and the driven part through an insulating block, so that when the driven part is charged, static electricity will not be transmitted to the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the textile fiber density detection device of the present invention.

[0026] Figure 2 It is a side view of the textile fiber density detection device of the present invention.

[0027] Figure 3 Schematic diagram of the sample being fixed on the rotating shaft.

[0028] Figure 4 This is a schematic diagram after the yarn is removed.

[0029] Figure 5 Schematic diagram of radial distribution of yarns.

[0030] Figure 6 A schematic diagram of the connector.

[0031] Figure markings: 1-thread removing wheel, 2-thread removing needle, 3-sample, 4-camera, 5-spray head, 6-transverse movement mechanism, 7-active part, 8-driven part, 9-driving motor, 10-insulating block, 11-locking table, 12-pressing part, 13-nut, 14-yarn, 15-frame, 16-slide rail, 17-lifting motor, 18-screw, 19-slide seat, 20-brush, 21-thread removing motor. DETAILED DESCRIPTION

[0032] like Figure 1-Figure 6 As shown, this embodiment provides a textile fiber density detection device, including a rotating shaft and a thread removal wheel 1. It also includes a frame 15, which is the skeleton of the entire device, and the remaining devices are installed on the frame 15. A driving motor 9 is arranged on the top of the frame 15, and the rotating shaft of the driving motor 9 is connected to the rotating shaft so that the rotating shaft can rotate. A connector for connecting the sample 3 is arranged at the end of the rotating shaft so that the sample 3 is wrapped and fixed to the connector. The schematic diagram of the sample 3 wrapped on the rotating shaft is shown in Figure 3 As shown. The surface of the thread ripping wheel 1 is protrudingly provided with a plurality of thread ripping needles 2. The thread ripping needles 2 do not need to be too sharp, and they can beat the yarn on the fabric until it falls off during the rotation of the thread ripping wheel 1. The thread ripping wheel 1 is arranged at the end of the rotating shaft and is arranged in conjunction with the sample 3 so that the thread ripping needles 2 abut against the sample 3.

[0033] When the textile fiber density detection device of the present invention is used, the sample 3 is wrapped at the end of the rotating shaft so that the sample 3 is in a cylindrical shape. At the same time, the thread removal wheel 1 is moved close to the sample 3 and rotated. During the rotation of the thread removal wheel 1, the thread removal needle 2 penetrates into the fabric and pushes the yarn to the end of the fabric, thereby removing the yarn. Finally, the number of remaining yarns 14 is counted to obtain the density of the yarn 14. The sample 3 after the yarn is removed is as shown in FIG. Figure 4 As shown. If the density of the yarn 14 in the warp direction is measured, it is only necessary to control the sampling amount of the sample 3 in the weft direction, and the width of the sample 3 in the warp direction does not need to be controlled. This sample 3 is called a warp sample 3. When the warp sample 3 is fixed to the rotating shaft, the warp yarn 14 of the warp sample 3 is perpendicular to the rotating shaft of the thread removal wheel 1. This causes the weft yarn 14 to be gradually removed by the thread removal wheel 1, leaving the warp yarn 14. Similarly, if the density of the yarn 14 in the weft direction is measured, it is only necessary to control the sampling amount of the sample 3 in the warp direction, and the width of the sample 3 in the weft direction does not need to be controlled. This sample 3 is called a weft sample 3. When the weft sample 3 is fixed to the rotating shaft, the weft yarn 14 of the weft sample 3 is perpendicular to the rotating shaft of the thread removal wheel 1. This causes the warp yarn 14 to be gradually removed by the thread removal wheel 1, leaving the weft yarn 14.

[0034] The textile fiber density detection device of the present invention can conveniently remove the yarn 14, which is convenient for detecting the density of the yarn 14. At the same time, during the thread removal process of the thread removal wheel 1, the rotating shaft also rotates, so that the thread removal wheel 1 can contact all parts of the sample 3, thereby facilitating the complete removal of the yarn 14.

[0035] In this embodiment, an image recognition system for identifying the number of yarns 14 is also included. The image recognition system includes a camera 4. The shooting direction of the camera 4 points to the sample 3. The image recognition system can be combined to easily identify the number of yarns 14, thereby further reducing the difficulty of manual operation. There are many patents for image recognition systems for detecting the number of yarns 14, which belong to the prior art and will not be repeated in this embodiment.

[0036] In this embodiment, the rotating shaft is arranged vertically and the lower end is suspended. Figure 1 and Figure 2 As shown, the connector is arranged at the lower end of the rotating shaft. The thread removing wheel 1 is provided with a lifting mechanism to enable the thread removing wheel 1 to be lifted and lowered relative to the sample 3. Specifically, the lifting mechanism includes a slide rail 16, a lifting motor 17, a screw 18 and a slide seat 19. The slide rail 16 is vertically arranged on the frame 15. The slide seat 19 is slidably arranged on the slide rail 16. The thread removing wheel 1 is connected to the thread removing motor 21. The thread removing wheel 1 and the thread removing motor 21 are both connected to the slide seat 19. One end of the screw 18 is connected to the lifting motor 17 and is penetrated by the slide seat 19. The lifting motor 17 rotates to drive the thread removing wheel 1 to be lifted and lowered. The lifting mechanism enables the thread removing wheel 1 to be lifted and lowered, thereby better covering various parts of the sample 3.

[0037] In this embodiment, an electrostatic generator is also included, which is connected to the rotating shaft. The electrostatic generator is a prior art and will not be described in detail in this embodiment. It can generate static electricity, so that the yarns 14 connected to the rotating shaft are charged with static electricity, and then the yarns 14 are separated from each other under the action of static electricity, and then spread radially to the surroundings. Figure 5 As shown, the yarns 14 are separated from each other so that the adjacent yarns 14 are clearly distinguished, and the yarns 14 are prevented from being too close to each other and affecting the number of yarns 14 recognized by the image recognition system. At the same time, the shaft can also rotate quickly so that a number of yarns 14 are spread out in all directions. Then, the yarns 14 are spread out under the combined action of centrifugal force and static electricity.

[0038] In this embodiment, a spray head 5 is also included. Figure 1-Figure 5 As shown, the spray head 5 is arranged in cooperation with the rotating shaft so that the spray head 5 can be moved to the position directly below the rotating shaft and located inside the sample 3. A plurality of spray holes are arranged around the spray head 5. After the yarn 14 is removed, the static electricity is turned on, the spray head 5 is turned on and the rotating shaft is rotated to spread the plurality of yarns 14 around.

[0039] The spray head 5 is arranged to wet the yarn 14, so that the protruding fibers on the surface of the yarn 14 adhere to the surface of the yarn 14 under the action of water, so as to prevent the protruding fibers from affecting image recognition. At the same time, the wet yarn 14 is heavier, and a greater centrifugal force can be generated when the shaft rotates, which is more conducive to the radial separation of the yarn 14. In addition, the wetting of the yarn 14 is also more conducive to conductivity, so that the fibers with weak conductivity can also be better separated radially under the action of static electricity.

[0040] In this embodiment, a lateral movement mechanism 6 is also included. Figure 1 and Figure 2 As shown, the camera 4 and the spray head 5 are both arranged on the transverse movement mechanism 6, so that the camera 4 and the spray head 5 can follow the transverse movement mechanism 6 to move to the position directly below the rotating shaft. The transverse movement mechanism 6 can be a slider, which cooperates with the slide groove at the bottom of the frame 15 so that it can slide along the slide groove. At the same time, an electric push rod and other mechanisms are arranged in conjunction with the transverse movement mechanism 6 to drive it to move. The transverse movement mechanism 6 is arranged so that the camera 4 and the spray head 5 are located directly below the rotating shaft at different times, and the two do not interfere with each other. When the spray head 5 is working, it is located directly below the rotating shaft, and the camera 4 moves to one side. When the camera 4 is working, it is located directly below the rotating shaft, and the spray head 5 moves to one side, so as to avoid the spray head 5 blocking the camera 4 and preventing normal shooting.

[0041] In this embodiment, the rotating shaft includes an active part 7 and a driven part 8. Figure 1 and Figure 2 As shown, the active part 7 is connected to the driving motor 9. The driven part 8 is connected to the active part 7 through the insulating block 10. The electrostatic generator is connected to the driven part 8. The active part 7 and the driven part 8 are connected by the insulating block 10, so that the driven part 8 will not transfer static electricity to the entire device when it is charged. Specifically, the electrostatic generator is connected to the driven part 8 through the brush 20.

[0042] In this embodiment, a truncated cone-shaped locking platform 11 is provided at the lower end of the rotating shaft. Figure 6 As shown, the small diameter end of the locking platform 11 is connected to the rotating shaft. The connector includes a clamping portion 12 and a nut 13 which are sleeved on the outside of the rotating shaft. The inner wall of the clamping section is matched with the locking platform 11 so that the inner wall of the clamping section fits the outer wall of the locking platform 11. The nut 13 is threadedly connected to the outside of the rotating shaft and matched with the clamping portion 12 so that the nut 13 presses the clamping portion 12 to the locking platform 11. When the nut 13 is loosened, the clamping portion 12 can be easily moved away from the locking platform 11, thereby facilitating the taking and placing of the sample 3. When the nut 13 is locked, the clamping portion 12 presses the sample 3 to the locking platform 11 to prevent the sample 3 from falling.

[0043] This embodiment also provides a method for detecting fiber density of textiles, comprising the following steps:

[0044] S1: Connect the sample 3 to the rotating shaft and remove the excess yarn 14 through the thread removal wheel 1.

[0045] S2: Turn on the electrostatic generator and open the spray head 5. The shaft rotates so that the plurality of yarns 14 to be tested are distributed radially.

[0046] S3: The camera 4 takes pictures of a number of yarns 14 to be tested and identifies the number of yarns 14 through an image recognition system to obtain the density of the yarns 14.

[0047] In this way, the yarns 14 can be quickly removed and the remaining yarns 14 can be distributed radially, which is convenient for identifying the number of yarns 14 and thus improving the detection efficiency of the limit density.

Claims

1. A textile fiber density detection device, characterized in that: It comprises a rotating shaft and a thread removing wheel; a connector for connecting a sample is arranged at the end of the rotating shaft so that the sample is wrapped and fixed on the connector; a plurality of thread removing needles are protruding from the surface of the thread removing wheel; the thread removing wheel is located at the end of the rotating shaft and is matched with the sample so that the thread removing needles abut against the sample.

2. The textile fiber density detection device according to claim 1, characterized in that: It also includes an image recognition system for identifying the number of yarns; the image recognition system includes a camera; the shooting direction of the camera points to the sample.

3. The textile fiber density detection device according to claim 2, characterized in that: The rotating shaft is arranged vertically and the lower end is suspended; the connecting head is arranged at the lower end of the rotating shaft; the thread removing wheel is provided with a lifting mechanism so that the thread removing wheel can be lifted and lowered relative to the sample.

4. The textile fiber density detection device according to claim 3, characterized in that: It also includes an electrostatic generator; the electrostatic generator is connected to the rotating shaft.

5. The textile fiber density detection device according to claim 4, characterized in that: It also includes a spray head; the spray head is arranged in cooperation with the rotating shaft so that the spray head can be moved to the bottom of the rotating shaft and located inside the sample; a plurality of spray holes are arranged around the spray head.

6. The textile fiber density detection device according to claim 5, characterized in that: It also includes a transverse movement mechanism; the camera and the spray head are both arranged on the transverse movement mechanism, so that the camera and the spray head can follow the transverse movement mechanism to move to the bottom of the rotating shaft.

7. The textile fiber density detection device according to claim 6, characterized in that: The rotating shaft comprises an active part and a driven part; the active part is connected to a driving motor; the driven part is connected to the active part through an insulating block; and the electrostatic generator is connected to the driven part.

8. The textile fiber density detection device according to claim 7, characterized in that: A truncated cone-shaped locking platform is provided at the lower end of the rotating shaft; the small-diameter end of the locking platform is connected to the rotating shaft; the connecting head includes a clamping portion and a nut which are sleeved on the outside of the rotating shaft; the inner wall of the clamping section is matched with the locking platform so that the inner wall of the clamping section is attached to the outer wall of the locking platform; the nut is threadedly connected to the outside of the rotating shaft and matched with the clamping portion so that the nut presses the clamping portion onto the locking platform.

9. The textile fiber density detection device according to claim 8, characterized in that: The electrostatic generator is connected to the driven part through a brush.

10. A method for detecting fiber density of textiles, characterized in that: Used in conjunction with the textile fiber density detection device according to any one of claims 5 to 9; the detection method comprises the following steps: S1: Connect the sample to the rotating shaft and remove the excess yarn using the thread removal wheel; S2: Turn on the electrostatic generator and open the spray head; the shaft rotates so that the yarns to be tested are distributed radially; S3: The camera takes pictures of several yarns to be tested and identifies the number of yarns through an image recognition system to obtain the yarn density.

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