Constant-tension antiskid yarn length measuring device
By introducing a yarn length measuring device into the constant tension yarn feeder, and using photoelectric or magnetic sensors in conjunction with a code disk to detect the yarn length, the problem of inaccurate yarn usage in existing technologies is solved, enabling precise statistics of yarn usage and monitoring of production progress.
Patent Information
- Application Number
- CN202422943394.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing constant tension yarn feeders cannot accurately count yarn consumption, making it difficult to monitor production progress.
A constant tension anti-slip yarn length measuring device was designed. By introducing a yarn length measuring device into the yarn feeder, the yarn length is detected by using photoelectric or magnetic sensors and code disks, and the result is transmitted to the main controller for calculation via pulse signals.
It enables precise statistics on yarn usage, ensures smooth yarn delivery, avoids slippage, and improves the accuracy of production progress monitoring.
Smart Images
Figure CN223548204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of knitting technology, and in particular to a constant tension anti-slip yarn length measuring device. Background Technology
[0002] Constant tension yarn feeders are key components in textile equipment such as knitting machines, primarily used to transport yarn at a constant tension during the weaving process. They are applied in various textile applications, including flat knitting machines, circular knitting machines, and braiding machines, playing a vital role in the production of fine textiles and industrial textiles. Existing constant tension yarn feeders feature an eight-claw yarn feed clamp at the top of the yarn inlet position, used only to fix and guide the yarn into the feeder, lacking the function of measuring yarn length. This makes it difficult to accurately calculate yarn usage and monitor production progress. Therefore, this invention proposes a constant tension anti-slip yarn length measuring device for accurate yarn usage measurement. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a constant tension anti-slip yarn length measuring device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a constant tension anti-slip yarn length measuring device, comprising a yarn length measuring device, the yarn length measuring device including a housing, the top of the housing being provided with one or more upper ceramic eye fixing plates, the upper ceramic eye fixing plates being fitted with upper ceramic eyes; the front wall of the housing is rotatably connected to a rotating shaft via a bearing, the outer end of the rotating shaft being provided with a yarn measuring guide wheel, the inner end of the rotating shaft being provided with a code disk, and a pulse counting module being provided on one side of the housing, the pulse counting module having a function that cooperates with the code disk. A sensor for pulse counting; the front wall of the housing is provided with a strip-shaped tension adjustment hole, the tension adjustment hole is located on the side of the yarn measuring guide wheel away from the pulse counting module, a tension wheel is movably mounted on the tension adjustment hole, an adjustment bolt is threadedly connected to the side wall of the housing away from the pulse counting module, a U-shaped spring is provided inside the housing between the adjustment bolt and the tension wheel, and a mounting ear is provided at the bottom of the housing, the mounting ear is mounted on the top of the constant tension yarn feeder through a connector with an L-shaped longitudinal section.
[0005] Furthermore, the front side of the mounting ear seat is provided with a horizontally arranged lower porcelain eye fixing plate, and the lower porcelain eye fixing plate is equipped with a lower porcelain eye.
[0006] Furthermore, the mounting ear includes a front ear and a rear ear located at the bottom of one side of the housing. The front ear and the rear ear are spaced apart and each has a through hole. The surface of the rear ear near the front ear has one or more positioning protrusions. The side wall of the connector near the rear ear has a groove that engages with the positioning protrusions. The connector also has a mounting hole corresponding to the position of the through hole.
[0007] Furthermore, the groove has a gear-shaped structure, the positioning protrusion has a sector gear structure, and the center of the positioning protrusion coincides with the center of the groove.
[0008] Furthermore, the tensioning wheel includes a mounting shaft and a tensioning wheel body. The mounting shaft includes a mounting part, a guide part, and an abutment part from the outside to the inside. The mounting part is located outside the housing. The guide part is slidably disposed in the tension adjustment hole. The abutment part is located inside the housing. The tensioning wheel body is rotatably connected to the mounting part.
[0009] Furthermore, the outer wall of the yarn measuring guide wheel is provided with a yarn groove, and the tensioning wheel moves in and out of the yarn groove in a movable manner.
[0010] Furthermore, the pulse counting module has a pulse interface on the side away from the sensor, which is connected to the yarn feeder interface of the constant tension yarn feeder via a data line, and is used to transmit the pulse signal collected by the pulse counting module to the main controller of the constant tension yarn feeder.
[0011] Furthermore, the constant tension yarn feeder is provided with a yarn feeder interface circuit, which includes an optocoupler and its peripheral circuits. The optocoupler is connected to the main controller of the constant tension yarn feeder and is connected to the yarn feeder interface.
[0012] Furthermore, the code disk is a photoelectric code disk, and the sensor is a photoelectric sensor.
[0013] Furthermore, the code disk is a magnetic code disk, and the sensor is a magnetic sensor.
[0014] Beneficial effects
[0015] Compared to existing technologies, this invention offers at least the following advantages: Yarn is input through the upper ceramic eyelet at the top of the housing, passes through the yarn measuring guide wheel and tensioning wheel, then passes through the lower ceramic eyelet and enters the constant tension yarn feeder. Under the action of the adjusting bolt and spring, the tensioning wheel can move left and right along the tension adjustment hole, adjusting the distance between the tensioning wheel and the bottom of the yarn groove of the yarn measuring guide wheel, thereby adjusting the pressure of the tensioning wheel on the yarn and effectively preventing yarn slippage. The yarn measuring wheel can obtain pulse signals using a photoelectric sensor and photoelectric code disk combined with a grating pulse detection method or a magnetic sensor and magnetic code disk combined with a magnetic coding detection method. The pulse signals are transmitted to the main controller of the constant tension yarn feeder, which calculates the length of the yarn passing through the yarn measuring guide wheel. The multiple upper ceramic eyes at the top of the housing can be selected according to the roughness of the yarn. For smooth yarn, upper ceramic eyes with a larger contact area with the yarn measuring guide wheel are selected to prevent slippage; for rough yarn, upper ceramic eyes with a smaller contact area with the yarn measuring wheel are selected to reduce yarn resistance. By selecting the appropriate upper ceramic eyelet and adjusting the tensioning wheel, the yarn can be fed smoothly. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the yarn length measuring device of this utility model.
[0019] Figure 4 This is a front view structural diagram of the yarn length measuring device of this utility model.
[0020] Figure 5 for Figure 4 A schematic diagram of the AA cross-sectional structure.
[0021] Figure 6 for Figure 4 A schematic diagram of the longitudinal cross-section structure.
[0022] Figure 7 This is a schematic diagram of the mounting ear of the yarn length measuring device of this utility model.
[0023] Figure 8 This is a structural schematic diagram of the connector of this utility model.
[0024] Figure 9 This is a schematic diagram of the connection structure between the encoder and the pulse counting module of this utility model.
[0025] Figure 10 This is a schematic diagram of the tensioning wheel of this utility model.
[0026] Figure 11 This is a schematic diagram of the structure of the rotating shaft of this utility model.
[0027] Figure 12 This is the circuit diagram of the yarn feeder interface and the photoelectric pulse counting module of this utility model.
[0028] Figure 13 This is a schematic diagram of the structure of a constant tension yarn feeder in the prior art.
[0029] The diagram is labeled as follows: 100-Constant tension yarn feeder; 200-Yarn length measuring device; 300-Eight-claw yarn feeder; 400-Yarn; 1-Housing; 2-Tension adjustment hole; 3-Tension wheel; 31-Mounting shaft; 310-Abutting part; 311-Guide part; 312-Mounting part; 32-Tension wheel body; 4-Spring; 5-Adjusting bolt; 6-Yarn measuring wheel; 60-Yarn measuring guide wheel; 600-Yarn groove; 61-Rotating shaft; 610-Inner cap; 611-Outer cap; 62-Coder; 620-Groogging. ; 7-Photoelectric pulse counting module; 70-Photoelectric induction switch; 71-Photoelectric pulse interface; 8-Upper ceramic eye fixing plate; 9-Front ear; 10-Rear ear; 11-Lower ceramic eye fixing plate; 12-Connector; 120-Groove; 121-Mounting hole; 122-Fixing hole; 13-Lower ceramic eye; 14-Positioning protrusion; 15-Photoelectric pulse counting module circuit; 16-Yarn feeder interface circuit; 17-Yarn feeder interface; 18-Upper movable groove; 19-Lower movable groove; 20-Upper ceramic eye. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0033] Example 1:
[0034] See Figures 1-11 This embodiment provides a constant tension anti-slip yarn length measuring device, including a yarn length measuring device 200. The yarn length measuring device 200 includes a housing 1. The top of the housing 1 is provided with one or more upper ceramic eye fixing plates 8. In this embodiment, two upper ceramic eye fixing plates 8 are provided. The upper ceramic eye fixing plates 8 are horizontally arranged and have holes on them for installing upper ceramic eyes 14. The front wall of the housing 1 is rotatably connected to a rotating shaft 61 via a bearing 63. A yarn measuring guide wheel 60 is provided at the outer end of the rotating shaft located on the housing 1, and an inner cap 610 and an outer cap 611 are respectively provided at the inner end of the shaft located on the housing 1. The outer cap 611 has a larger diameter than the inner cap 610. Figure 5 As shown, an encoder 62 is fitted onto the outer cap 611 and the inner cap 610. A bearing 63 is provided on the top of the inner cap 610 to limit the bearing 63. A pulse counting module 7 is provided on the left side of the housing 1. The pulse counting module 7 has a sensor 70 soldered to the circuit board and cooperating with the encoder 62 to realize pulse counting. In this embodiment, the encoder is a photoelectric encoder, and the sensor is a photoelectric sensor.
[0035] A strip-shaped tension adjustment hole 2 is provided on the front wall of the housing 1, located to the right of the yarn measuring guide roller 60. A tension roller 3 is movably disposed within the tension adjustment hole 2. The tension roller 3 includes a mounting shaft 31 and a tension roller body 32. The mounting shaft 31 includes, from the outside to the inside, a mounting part 312, a guide part 311, and an abutment part 310. The diameter of the guide part 311 is smaller than the diameter of the abutment part 310, and the diameter of the mounting part 312 is smaller than the diameter of the guide part 311. The mounting part 312 is located outside the housing 1, the guide part 311 is slidably disposed within the tension adjustment hole 2, and the abutment part 310 is located inside the housing 1. The tension roller body 32 is rotatably connected to the mounting part 312. The diameter of the guide part 311 is slightly smaller than the width of the tension adjustment hole 2, and the diameters of the tension roller body 32 and the abutment part 32 are larger than the width of the tension adjustment hole 2. The front and rear walls of the housing are respectively provided with an upper movable groove 18 and a lower movable groove 19 to guide the movement of the abutment part 32. Figure 6As shown, an adjusting bolt 5 is threadedly connected to the side wall of the housing 1 away from the pulse counting module 7. A U-shaped spring piece 4 is disposed inside the housing 1 between the adjusting bolt 5 and the tensioning wheel 3, and the spring piece 4 contacts the abutment portion 32 of the tensioning wheel 3. A yarn groove 600 is arranged around the outer side wall of the yarn measuring guide wheel 60. The thickness of the tensioning wheel body 30 is slightly smaller than the width of the yarn groove 600, allowing the tensioning portion 30 to move in and out of the yarn groove 600.
[0036] The bottom of the housing 1 is provided with mounting ears, which are mounted on the top of the constant tension yarn feeder 100 via a connector 12 with an L-shaped longitudinal cross-section. Specifically, the mounting ears include a front ear 9 and a rear ear 10 located at the bottom of one side of the housing. The front ear 9 and the rear ear 10 are spaced apart, and both the front ear 9 and the rear ear 10 have through holes. The surface of the rear ear 10 near the front ear 10 has two positioning protrusions 14. The side wall of the connector 12 near the rear ear 10 has a groove 120 that fits and engages with the positioning protrusions 14. The connector has mounting holes 121 corresponding to the positions of the through holes. Bolt and nut assemblies are installed in the through holes of the front ear 9, the mounting holes 121 of the connector 12, and the through holes of the rear ear 10 to fix the connector 12 to the front ear 9 and the rear ear 10. The groove 120 has a gear-shaped structure, and the positioning protrusion 14 has a sector gear structure. The center of the positioning protrusion 14 coincides with that of the groove 120. During installation, the positioning protrusion 14 of the connector 12 is engaged into the groove 120 to limit the yarn length measuring device 200 and prevent it from rotating. The bottom of the connector 12 has two fixing holes 122 for fixing the connector 12 to the top of the constant tension yarn feeder 100 with bolts.
[0037] The pulse counting module 7 has a pulse interface 71 on the side away from the sensor 70. The pulse interface 71 is electrically connected to the sensor 70. Figure 12 As shown in the photoelectric pulse counting module circuit 15, the sensor model is TCST1103, and its connected pulse interface CN1, also known as pulse interface 71, is located outside the housing 1. It is connected via a data cable to the yarn feeder interface 17 of the constant tension yarn feeder 100. The yarn feeder interface 17 is electrically connected to the main controller of the constant tension yarn feeder 100, and is used to transmit the pulse signal collected by the pulse counting module 7 to the main controller of the constant tension yarn feeder 100. The main controller can calculate the yarn length based on the pulse signal and transmit the yarn length data to upstream equipment via a communication module connected to the main controller for application by the upstream equipment. It should be noted that the main controller calculating the yarn length based on the pulse signal is existing technology.
[0038] In this embodiment, the constant tension yarn feeder 100 is equipped with a yarn feeder interface circuit 16. The yarn feeder interface circuit 16 includes an optocoupler U4 and its peripheral circuits. The optocoupler U4 is a TLP181 and serves as an electrical isolation device. The 6th pin of the optocoupler U4 is connected to the main controller of the constant tension yarn feeder 100 through a resistor R3. The 1st pin of the optocoupler is connected to the yarn feeder interface 17, which is also the CN2 interface of the yarn feeder interface circuit 16.
[0039] The front side of the mounting ear is provided with a horizontally arranged lower porcelain eye fixing plate 11, and a lower porcelain eye 13 is installed in the hole of the lower porcelain eye fixing plate 11.
[0040] In practice, yarn 400 is fed into the upper ceramic eye 14 at the top of the housing 1, passes through the yarn measuring guide wheel 60 and the tensioning wheel 3, and then passes through the lower ceramic eye 13 into the constant tension yarn feeder 100. Under the action of the adjusting bolt 5 and the spring 4, the tensioning wheel 3 can move left and right along the tension adjustment hole 2, adjusting the distance between the tensioning wheel 3 and the bottom of the yarn groove 600 of the yarn measuring guide wheel 60. This adjusts the pressure of the tensioning wheel 3 on the yarn 400, effectively preventing yarn slippage. When the yarn 400 is fed, it drives the yarn measuring guide wheel 60 to rotate, which in turn drives the photoelectric encoder disk to rotate. The photoelectric sensor detects the rotation of the photoelectric encoder disk and obtains a pulse signal. The pulse signal is sent to the main controller of the constant tension yarn feeder, which calculates the length of the yarn passing through the yarn measuring guide wheel. The multiple upper ceramic eyes on the top of the housing can be selected according to the roughness of the yarn. If the yarn is smooth, upper ceramic eyes with a larger contact area with the measuring wheel are selected to prevent the yarn from slipping. If the yarn is rough, upper ceramic eyes with a smaller contact area with the measuring wheel are selected to reduce yarn resistance.
[0041] Example 2 differs from Example 1 in that the code disk 62 in this example is a magnetic code disk, and the sensor 70 is a magnetic sensor. The magnetic sensor is soldered to one side of the circuit board, and a pulse interface 71 is soldered to the other side. The magnetic sensor is electrically connected to the pulse interface. The circuit board with the soldered pulse interface and magnetic sensor is locked to the housing 1 with screws. The pulse interface, magnetic sensor, and connected circuit board constitute a pulse counting module.
[0042] In practice, yarn 400 is input through the upper ceramic eye 14 at the top of the housing, passes through the yarn measuring guide wheel 60 and the tensioning wheel 3, and then passes through the lower ceramic eye 13 into the constant tension yarn feeder 100. Under the action of the adjusting bolt 5 and the spring 4, the tensioning wheel 3 can move left and right along the tension adjustment hole 2, adjusting the distance between the tensioning wheel 3 and the bottom of the yarn groove 600 of the yarn measuring guide wheel 60, thereby adjusting the pressure of the tensioning wheel 3 on the yarn 400 and effectively ensuring that the yarn 400 does not slip. The yarn 400 transmission drives the yarn measuring guide wheel 60 to rotate, thereby causing the magnetic code disk to rotate. The magnetic sensor senses the rotation of the magnetic code disk and generates a pulse signal, which is transmitted to the yarn feeder interface 17 through the pulse interface 71. The yarn feeder interface circuit then sends the pulse signal to the main controller of the constant tension yarn feeder 100. The main controller can calculate the yarn length based on the pulse signal and send the yarn length data to upstream equipment through the communication module connected to the main controller for application. The multiple upper ceramic eyes 14 on the top of the housing 1 can be selected according to the roughness of the yarn 400. If the yarn is smooth, upper ceramic eyes with a larger contact area with the measuring wheel are selected to prevent the yarn from slipping. If the yarn is rough, upper ceramic eyes with a smaller contact area with the measuring wheel are selected to reduce yarn resistance.
[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A constant tension anti-slip yarn length measuring device, characterized in that, The device includes a yarn length measuring device, comprising a housing. One or more upper ceramic eye fixing plates are provided on the top of the housing, and upper ceramic eyes are installed on the fixing plates. A rotating shaft is rotatably connected to the front wall of the housing via a bearing. A yarn measuring guide wheel is provided at one end of the rotating shaft on the outer side of the housing, and a code disk is provided at the other end on the inner side of the housing. A pulse counting module is provided on one side of the housing, and the pulse counting module has a sensor that cooperates with the code disk to achieve pulse counting. A strip-shaped tension adjustment hole is provided on the front wall of the housing, located on the side of the yarn measuring guide wheel away from the pulse counting module. A tension wheel is movably mounted on the tension adjustment hole. An adjusting bolt is threadedly connected to the side wall of the housing away from the pulse counting module. A U-shaped spring is provided inside the housing between the adjusting bolt and the tension wheel. A mounting ear is provided at the bottom of the housing, and the mounting ear is mounted on the top of the constant tension yarn feeder via a connector with an L-shaped longitudinal section.
2. The constant tension anti-slip yarn length measuring device according to claim 1, characterized in that, The front side of the mounting ear is provided with a horizontally arranged lower porcelain eye fixing plate, and the lower porcelain eye fixing plate is equipped with a lower porcelain eye.
3. The constant tension anti-slip yarn length measuring device according to claim 1 or 2, characterized in that, The mounting ear includes a front ear and a rear ear located at the bottom of one side of the housing. The front ear and the rear ear are spaced apart and each has a through hole. The surface of the rear ear near the front ear has one or more positioning protrusions. The side wall of the connector near the rear ear has a groove that engages with the positioning protrusions, and the connector has a mounting hole corresponding to the position of the through hole.
4. The constant tension anti-slip yarn length measuring device according to claim 3, characterized in that, The groove has a gear-shaped structure, and the positioning protrusion has a sector gear structure. The center of the positioning protrusion coincides with the center of the groove.
5. The constant tension anti-slip yarn length measuring device according to claim 1, characterized in that, The tensioning wheel includes a mounting shaft and a tensioning wheel body. The mounting shaft includes a mounting part, a guide part, and an abutment part from the outside to the inside. The mounting part is located outside the housing. The guide part is slidably disposed in the tension adjustment hole. The abutment part is located inside the housing. The tensioning wheel body is rotatably connected to the mounting part.
6. The constant tension anti-slip yarn length measuring device according to claim 5, characterized in that, The outer wall of the yarn measuring guide wheel is provided with a yarn groove, and the tensioning wheel moves in and out of the yarn groove in a movable manner.
7. The constant tension anti-slip yarn length measuring device according to claim 1, characterized in that, The pulse counting module has a pulse interface on the side away from the sensor, which is connected to the yarn feeder interface of the constant tension yarn feeder via a data line, and is used to transmit the pulse signal collected by the pulse counting module to the main controller of the constant tension yarn feeder.
8. The constant tension anti-slip yarn length measuring device according to claim 7, characterized in that, The constant tension yarn feeder is equipped with a yarn feeder interface circuit, which includes an optocoupler and its peripheral circuits. The optocoupler is connected to the main controller of the constant tension yarn feeder, and the optocoupler is connected to the yarn feeder interface.
9. The constant tension anti-slip yarn length measuring device according to claim 1 or 7, characterized in that, The code disk is an optical code disk, and the sensor is an optical sensor.
10. The constant tension anti-slip yarn length measuring device according to claim 1 or 7, characterized in that, The code disk is a magnetic code disk, and the sensor is a magnetic sensor.